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Rome, August 2005
FRAMEWORKS
FOR
STRUCTURAL ANALYSIS
FRANCO BONTEMPI
Professor of Structural Analysis and Design
School of Engineering
University of Rome โ€œLa Sapienzaโ€
franco.bontempi@uniroma1.it
franco.bontempi@francobontempi.org
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TABLE OF CONTENTS
๏ƒ˜ PART I: THE STRUCTURE
๏ƒ˜ PART II: THE ENVIRONMENT
๏ƒ˜ PART III: THE PEOPLE
๏ƒ˜ CONCLUSION
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A very personal view
A frame is a scheme of interpretations in which the
particulars of the events and activities to which we
attend are organized and made sensible.
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Concessionaria per la progettazione, realizzazione e gestione del collegamento stabile tra la Sicilia e il Continente
Organismo di Diritto Pubblico
(Legge nยฐ 1158 del 17 dicembre 1971, modificata dal D.Lgs nยฐ 114 del 24 aprile 2003)
PONTE SULLO STRETTO DI MESSINA
Documento principale: INGEGNERIA โ€“ PROGETTAZIONE
DEFINITIVA ED ESECUTIVA
Titolo documento: Fondamenti Progettuali e Prestazioni Attese
per lโ€™Opera dโ€™Attraversamento
Codice documento: GCG.F.04.01
Data Emissione: 14 Gennaio 2005
BASISOFTHEDESIGN
&
EXPECTEDPERMORMANCES
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STRUCTURAL
QUALITY
- design life
- railway
runability
- highway
runability
- free channel
- robustness
- durability
- management
GLOBAL
GEOMETRY
AND
TOPOLOGY
TOPOLOGY
- suspension system
- towers
- towers foundation
- anchor system
- main deck
- deck landing
- ...
GLOBAL GEOMETRY
- main span
- sx span
- dx span
SECTIONAL GEOMETRY
- continuous girder sections
- transverse section
- main cables
- hangers
- towers
- secondary elements
MATERIALS
CHARACTERISTICS
- girders
- cables
SYNTHESIS OF
STRUCTURAL
SOLUTION
AND
DOCUMENTATION
BOUNDARY
CONDITIONS
CONSTRAINTS:
rigid and elastic
constraints,
imposed
displacements
NATURAL
ACTIONS
- temperature
- wind
- earthquake
ANTROPIC
ACTIONS
a) permanent
loading
system
b) variable
- railway
- highway
c) accidental
CONVENTIONALMODELING:
QUASISTATICREPRESENTATION
BASIC STRUCTURAL
CONFIGURATION
PARAMETERS
- individuation
- definition
- uncertainty
- description
- bounding
GLOBAL
MODELING
- 2D
- 3D
MODELING WITH
DYNAMIC INTERACTION
ALTERNATIVE STRUCTURAL
CONFIGURATIONS
GLOBAL
OPTIMIZATION
- topology
- morphology
- parametric
LOCAL
OPTIMIZATION
- girders section
- transverse
section
- restraint zone
EXPERT AND
FIXED CHOICES
MEASURES
a) qualitative
b) materials volumes
c) serviceability
- modal characteristics
- deflections
- deformations
- reversibility
d) collapse scenarios
- collapse characteristics
- robustness
e) accidental scenarios
- configurations
- risks
DETAILED
MODELING
EXTENDED
MODELING
1
2 3
4
5
6
7
Numerical Modeling for the
Structural Analysis and Design of
MESSINA STRAIT BRIDGE:
subdivision and development of activities.
FB - june 6, 2005 / franco.bontempi@uniroma1.it
PART I
THE STRUCTURE
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DESCRIPTION OF THE
STRUCTURE
๏ƒ˜ the first point regards the peculiar
intrinsic characteristics of the structure:
morphology, geometry (both global and
local), topology of the resistant
mechanisms;
๏ƒ˜ one is referring here to the domain of the
structural problem.
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Knowledge Models
๏ƒ˜ A thorough understanding of different knowledge
representations is a vital part, since the ease of solving a
problem is almost completely determined by the way the
problem is conceptualized and represented. Models are:
๏ƒ˜ Ladders: hierarchical (tree-like) diagrams (as concept ladder,
composition ladder, decision ladder and attribute ladder)
๏ƒ˜ Network Diagrams: they show nodes connected by arrows;
the nodes might represent any type of concept, attribute, value
or task, and the arrows between the nodes any type of
relationship (as concept maps, process maps and state
transition networks)
๏ƒ˜ Tables and Grids: representations that make use of tables or
grids (as forms, frames, timelines and matrices/grids)
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Knowledge tree
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Evolutionary tree
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Strategies
๏ƒ˜ From general to specific
๏ƒ˜ From prominent to concealed
๏ƒ˜ From qualitative to quantitative
๏ƒ˜ From extensive to narrow
๏ƒ˜ From global to local
๏ƒ˜ From coarse to fine
๏ƒ˜ From explicit to implicit
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0
500
1000
1500
2000
2500
3000
3500
LUCE 1100 1298 1385 1410 1624 1991 3300
BISA
N-
VER
RAZZ
JIAN
GYN
HUM
BER
GRE
AT
AKA
SHI
MES
SINA
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The limits of structural systems
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Majormodesof
Evolutioninnature
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Artificial evolution
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EVOLUTION vs INNOVATION
DESIGN
PERFORMANCES
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KNOWLEDGE
REQUIRED
BY AN EVOLUTIVE
DESIGN
NEW KNOWLEDGE
REQUIRED BY
AN INNOVATIVE
DESIGN
ACTUAL
KNOWLEDGE BASIS
KNOWLEDGE
GROWTH PROCESS
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deck arrangement
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deck arrangement
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highway girder section
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railway girder section
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transverse element section
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Enactmentofthemodel
LOCAL
KNOWLEDGE
GLOBAL
KNOWLEDGE
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x
x
x
x
Fault
Fault
Fault
Fault
Overall plant
1st level
Plant item
2nd level
Control loop
3rd level
Element/Component
4th level
๏ƒ˜ System
๏ƒ˜ Structural organism
๏ƒ˜ Multilevel analysis
๏ƒ˜ Sub structuring
๏ƒ˜ B- & D-regions
DESCRIPTION:
anatomy
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SISTEMA
STRUTTURALE
PRINCIPALE
ZONE SPECIALI DI
IMPALCATO
SISTEMA DI
RITEGNO/SOSTEGNO
SISTEMA
STRUTTURALE
SECONDARIO
SISTEMA DI
SOSPENSIONE
IMPALCATO
CORRENTE
FONDAZIONI DELLE TORRI
ANCORAGGI
TORRI
SELLE
CAVI PRINCIPALI
PENDINI
CASSONI STRADALI
CASSONE FERROVIARIO
TRAVERSO
INTERNE
TERMINALI
SISTEMA STRUTTURALE
AUSILIARIO
STRADALE
FERROVIARIO
FUNZIONAMENTO
MANUTENZIONE
EMERGENZA
PONTE
MACROLIVELLO
MESOLIVELLO
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Individuazione delle
VARIABILI di progetto
per ciascun elemento
Individuazione degli
ELEMENTI
per ciascun componente
Individuazione dei
COMPONENTI
di ciascuna sottostruttura
SOTTOSTRUTTURAZIONE
del sistema globale
per lo studio di dettaglio
delle singole prestazioni
SISTEMA DI
RITEGNO/SOSTEGNO
FONDAZIONI DELLE TORRI
ANCORAGGI
TORRI
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Web-based structure description
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DEFINITION OF
PRINCIPAL
FUNCTIONS AND
THEIR RELATIONS
DEFINITION OF
DETAILED OPERATIONS
IN A STEP BY STEP WAY
FUNCTION:
physiology
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Natural science anatomy
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MAIN
STRUCTURAL
SYSTEM
AUXILIARY
STRUCTURAL
SYSTEM
SECONDARY
STRUCTURAL
SYSTEM
SPECIAL
DECK ZONES
BRIDGE
DECK
HIGHWAY SYSTEM
RAILWAY SYSTEM
OPERATION
MAINTENANCE
EMERGENCY
FOUNDATION OF TOWERS
TOWERS
ANCHORAGES
SUPPORTING
CONDITION
HIGHWAY BOX-GIRDER
CROSS BOX-GIRDER
RAILWAY BOX-GIRDER
INNER
OUTER
BRIDGE
SUPERSTRUCTURE
MACRO-LEVELS
MESO-LEVELS
MAIN CABLES
HANGERS
SUSPENSION
SYSTEM
SADDLES
STRUCTURAL DECOMPOSITION
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The landing of the bridge
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Foundations
Towers
Main cables
Hangers
Bridge deck
Seismic load transfer mechanism
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FACTORS INFLUENCING
STRUCTURAL COMPLEXITY
NON LINEAR
BEHAVIOR
LINEAR
3300183 183777 627
960 3300 m 810
+77.00 m
+383.00 +383.00
+54.00
+118.00
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3300183 183777 627
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CONTROL DEVICES
SOIL BEHAVIOR
MATERIAL NONLINEARITY
SOIL/STRUCTURE INTERFACE CONTACT
HANGERS
TOWERS
MAIN CABLES
GEOMETRIC NONLINEARITY
NONLINEARITY
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FACTORS INFLUENCING
STRUCTURAL COMPLEXITY
LOW
AMBIGUITY
UNCERTAINTY
HIGH
NON LINEAR
BEHAVIOR
LINEAR
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STRUCTURAL MODEL
LOADING SYSTEM
GEOMETRY AND MATERIAL
UNCERTAINTY
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FACTORS INFLUENCING
STRUCTURAL COMPLEXITY
LOW
AMBIGUITY
UNCERTAINTY
HIGH
TIGHT
COUPLING
INTERACTIONS
CONNECTIONS
LOOSE
NON LINEAR
BEHAVIOR
LINEAR
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+54.00
+118.00
+52.00 +63.00
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+77.00 m
+383.00 +383.00
+54.00
+118.00
+52.00 +63.00
TRAFFIC โ€“ STRUCTURE
WIND - STRUCTURE
SOIL - STRUCTURE
INTERACTION
GLOBAL/LOCAL STRUCTURAL BEHAVIOUR
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Un-deployable objects:
intricate interactions
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System complexity
PART II
THE ENVIRONMENT
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DECISIONNEGOTIATION & REFRAMING
WIND & TEMPERATURE
EARTHQUAKE
ANTROPICACTIONS
(RAILWAY&HIGHWAY)
STRUCTURALBEHAVIOR&
PERFORMANCEASSESSMENT
MODEL
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GLOBAL LEVEL
LOCAL LEVEL
Hierarchy and size of
actions / performances
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Ambientali
Antropiche
Azioni
Interazione con il campo
gravitazionale terrestre
Interazione dinamica con
lโ€™ambiente meteorologico
Interazione terreno-struttura
Interazione quasi-statica con
lโ€™ambiente meteorlogico
Carichi permanenti strutturali
Carichi permanenti
non strutturali
Carichi permanenti
strutturali secondari
Vento
Tromba dโ€™aria
Tempesta
Sisma
Cedimenti delle fondazioni
Rigetto di faglia
Variazione termica stagionale
Variazione termica diurna
Carichi da traffico
Intenzionali
Non intenzionali
Incendio
Stradale
Pedonale
Ferroviario
Carrelli per manutenzione
Esplosione
Scavalcamento barriere
Manomissione
Cassone ferroviario
Urto di aereomobile
Urto di natante
Impalcato ferroviario
Impalcato stradale
Ancoraggio
ยฝ Luce
ยผ Luce
Torre
Torre lato Sicilia
Ancoraggio lato Sicilia
Traslazionale X
Traslazionale Y
Traslazionale Y
Rotazionale X
Traslazionale Z
Rotazionale X
Pendini
Impalcato
Cavi
Torri
Uniforme
Differenziale interno-esterno
Uniforme
Differenziale interno-esterno
Stese di carico globali
Modello dinamico
Dislocata sui cassoni stradali
Modello dinamico
Modello dinamico
Stese di carico globali
Modello dinamico
Impronta locale
Esterna
Interna
Cassone
Torre
Stradale
Ferroviario
Ancoraggio
Torre
Pendino
Cavalletto
Torre
Cavo
Pendino
Impalcato
Ancoraggio
Impalcato
Rotazionale Y
Rotazionale Z
Traslazionale Z
Rotazionale Y
Sovrastruttura stradale
Armamento ferroviario
Impianti
Uniforme
Non uniforme 1
Non uniforme 2
Modello dinamico
Modello dinamico
Spostamento blocco torre
Globale
Globale
Carico locale sullโ€™impalcato
Modello dinamico
Uniforme
Non uniforme 1
Non uniforme 2
In assenza di traffico
In presenza di traffico
Uniforme
Uniforme
Ferroviario 1
Ferroviario 2
Ferroviario 3
Ferroviario 4
Ferroviario 5
Ferroviario 6
Ferroviario 7
Ferroviario 8
Ferroviario 9
Ferroviario 10
Stradale 1
Stradale 2
Stradale 3
Stradale 4
Stradale 5
Stradale 6
Stradale 7
Stradale 8
Stradale 9
Stradale 10
Stradale 11
Stradale 12
Azioni al contorno
del dominio strutturale
Azioni nel dominio strutturale
Azioni Funzionali
Azioni Incidentali
Azioni chimico-fisiche
Differenziale sulla sezione
Differenziale sulla sezione
Carichi funzionali accessori
Impronte locali del carico
Azione reale del traffico
Carico locale sul binario
Azione reale del traffico
Stese di carico globali
Azione reale del traffico Modello dinamico
Svio
Deragliamento
Urto sulle barriere di sicurezza
Trasverso
Torre
Cavo
Pendino
Impalcato
Ancoraggio
Corrosione
Ancoraggio lato Calabria
Torre lato Calabria
Traslazionale X
Traslazionale X
Traslazionale Y
Rotazionale X
Traslazionale Y
Traslazionale Z
Rotazionale X
Rotazionale Y
Traslazionale Z
Rotazionale Y
Rotazionale Z
Rotazionale Z
Rotazionale Z
Traslazionale X
Pendini
Impalcato
Cavi
Torri
Cassone ferroviario
Accessi ed arredi
gambe
trasversi
funi
Cassone stradale
Impianti
trasversi
Pendini
Impalcato
Cavi
Torri
Dispositivi per il controllo
strutturale e aerodinamico
funi
Dispositivi per il controllo
strutturale e aerodinamico
Distanziatori meccanici
Smorzatori
Selle
Impalcato
Torri
Cavi
Guaine protettive
Guaine protettive
Pendini
๏€  ๏€  ๏€  ๏€  ๏€ 
Ambientali
Azioni
Interazione dinamica con
lโ€™ambiente meteorologico
Interazione terreno-struttura
Vento
Tromba dโ€™aria
Tempesta
Sisma
Cedimenti delle fondazioni
Rigetto di faglia
ยฝ Luce
ยผ Luce
Torre
Torre lato Sicilia
Ancoraggio lato Sicilia
Traslazionale X
Traslazionale Y
Traslazionale Y
Rotazionale X
Traslazionale Z
Rotazionale X
Cavi
Differenziale interno-esterno
Stese di carico globali
Modello dinamico
Modello dinamico
Rotazionale Y
Rotazionale Z
Traslazionale Z
Rotazionale Y
Uniforme
Non uniforme 1
Non uniforme 2
Modello dinamico
Modello dinamico
Spostamento blocco torre
Modello dinamico
Uniforme
Non uniforme 1
Non uniforme 2
In assenza di traffico
In presenza di traffico
Uniforme
Stradale 1
Stradale 2
Stradale 3
Stradale 4
Stradale 5
Stradale 6
Stradale 7
Stradale 8
Stradale 9
Stradale 10
Stradale 11
Azioni al contorno
del dominio strutturale
Azioni chimico-fisiche
Torre
Cavo
Pendino
Impalcato
Ancoraggio
Corrosione
Ancoraggio lato Calabria
Torre lato Calabria
Traslazionale X
Traslazionale X
Traslazionale Y
Rotazionale X
Traslazionale Y
Traslazionale Z
Rotazionale X
Rotazionale Y
Traslazionale Z
Rotazionale Y
Rotazionale Z
Rotazionale Z
Rotazionale Z
Traslazionale X
Actions decomposition
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Carichi da traffico
Stradale
Pedonale
Ferroviario
Carrelli per manutenzione
Scavalcamento barriere
Cassone ferroviario
Stese di carico globali
Modello dinamico
Dislocata sui cassoni stradali
Stese di carico globali
Modello dinamico
Impronta locale
Globale
Carico locale sullโ€™impalcato
Ferroviario 1
Ferroviario 2
Ferroviario 3
Ferroviario 4
Ferroviario 5
Ferroviario 6
Ferroviario 7
Ferroviario 8
Ferroviario 9
Ferroviario 10
Stradale 1
Stradale 2
Stradale 3
Stradale 4
Stradale 5
Stradale 6
Stradale 7
Stradale 8
Stradale 9
Stradale 10
Stradale 11
Stradale 12
Azioni Funzionali
Carichi funzionali accessori
Impronte locali del carico
Azione reale del traffico
Carico locale sul binario
Azione reale del traffico
Stese di carico globali
Azione reale del traffico Modello dinamico
Svio
Urto sulle barriere di sicurezza
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COMPLEXITY
STOCHASTICSDETERMINISM
Qualitative
Risk Analysis
Quantitative
Risk Analysis
Pragmatic
Risk Analysis
Strategies to consider contingency
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Bounding strategies:
anti-optimization process
p
๏ฌ(p)
๏ฌ
p
๏ฌ(p)
๏ฌ
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Disclosure of failure
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FAILURE LOCAL BEHAVIORS
HIDDEN DEFECTS
EXCEPTIONAL CONDITIONS
IN-DEPTH SAFETY
PSYCHOLOGICAL
PRECURSORS
SAFETY
AFFECTING
ACTIONS
HIDDEN ERRORS AT HIGHER
MANAGEMENT LEVELS
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HAZARD
IN-DEPTH
DEFENCE
HOLES DUE TO
ACTIVE ERRORS
HOLES DUE TO
HIDDEN ERRORS
SINCHRONICITY:
inconstant connection through
contingence, equivalence, or
meaning
DEPENDABILITY
ROBUSTNESS
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PERFORMANCE ROBUSTNESS
QUALITY
DAMAGE or ERROR
REQUIRED
PERFORMANCE
NOMINAL
PERFORMANCE
NOMINAL SITUATION
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PART III
THE PEOPLE
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REAL WORLD
ORGANIZATION OF THE
STRUCTURAL PROBLEM
ENACTMENT
OF ATTENTION:
FOR- & BACK-GROUND
SELECTION
OF CONCEPTUAL
FRAMEWORK
RETENTION
OF MODELLING
AND RESULTS
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๏ƒ˜ Context dependence
๏ƒ˜ Contrast effect
๏ƒ˜ Recency effect
๏ƒ˜ Halo effect
๏ƒ˜ Plasticity
๏ƒ˜ Order effects
๏ƒ˜ Pseudo-opinions
๏ƒ˜ Vividness
๏ƒ˜ Wishful thinking
๏ƒ˜ Anchoring
๏ƒ˜ Social loafing
๏ƒ˜ Conformity
๏ƒ˜ The representativeness
heuristic
๏ƒ˜ Law of small numbers
๏ƒ˜ Hot hand
๏ƒ˜ Neglecting base rates
๏ƒ˜ Nonregressive prediction
๏ƒ˜ Synchronicity
๏ƒ˜ Causalation
๏ƒ˜ Salience
๏ƒ˜ Minority influence
๏ƒ˜ Groupthink
๏ƒ˜ Self-fulfilling prophecies
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COERENCE OF THE MODEL
1
2
DISSONANCE,
ANOMALY,
IRREGULARITY,
UGLINESS,
โ€ฆ.
Rome August 2005
Franco Bontempi /
FRAMEWORKS 97
CAPACITY TO BREAK OUT THE
TRAPS
CONCLUSION
THE WEIGHT OF THE
HUMAN SIDE
Rome August 2005
Franco Bontempi /
FRAMEWORKS 99
STRESS STATE
FB-14-09-04 [Mpa]
PP PN QA VV CAVO TORRE
riferimento 1,00 1,00 0,00 0,00 650 155
SLS-4 1,00 1,00 1,00 0,00 800 205
150 50 incremento per QA
SLS-5 1,00 1,00 1,00 1,00 810 260
10 55 incremento per VV
riferimento 1,10 1,50 0,00 0,00 730 185
SLS-4 1,15 1,50 1,50 0,00 955 260
225 75 incremento per QA
SLS-5 1,15 1,50 1,10 1,00 930 330
TOWERCABLE
SLS-4
SLS-5
ULS-4
ULS-5
Rome August 2005
Franco Bontempi /
FRAMEWORKS 100

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Bontempi AICC2005

  • 1. Rome, August 2005 FRAMEWORKS FOR STRUCTURAL ANALYSIS FRANCO BONTEMPI Professor of Structural Analysis and Design School of Engineering University of Rome โ€œLa Sapienzaโ€ franco.bontempi@uniroma1.it franco.bontempi@francobontempi.org
  • 2. Rome August 2005 Franco Bontempi / FRAMEWORKS 2
  • 3. Rome August 2005 Franco Bontempi / FRAMEWORKS 3 TABLE OF CONTENTS ๏ƒ˜ PART I: THE STRUCTURE ๏ƒ˜ PART II: THE ENVIRONMENT ๏ƒ˜ PART III: THE PEOPLE ๏ƒ˜ CONCLUSION
  • 4. Rome August 2005 Franco Bontempi / FRAMEWORKS 4 A very personal view A frame is a scheme of interpretations in which the particulars of the events and activities to which we attend are organized and made sensible.
  • 5. Rome August 2005 Franco Bontempi / FRAMEWORKS 5
  • 6. Rome August 2005 Franco Bontempi / FRAMEWORKS 6
  • 7. Rome August 2005 Franco Bontempi / FRAMEWORKS 7
  • 8. Rome August 2005 Franco Bontempi / FRAMEWORKS 8
  • 9. Rome August 2005 Franco Bontempi / FRAMEWORKS 9 Concessionaria per la progettazione, realizzazione e gestione del collegamento stabile tra la Sicilia e il Continente Organismo di Diritto Pubblico (Legge nยฐ 1158 del 17 dicembre 1971, modificata dal D.Lgs nยฐ 114 del 24 aprile 2003) PONTE SULLO STRETTO DI MESSINA Documento principale: INGEGNERIA โ€“ PROGETTAZIONE DEFINITIVA ED ESECUTIVA Titolo documento: Fondamenti Progettuali e Prestazioni Attese per lโ€™Opera dโ€™Attraversamento Codice documento: GCG.F.04.01 Data Emissione: 14 Gennaio 2005 BASISOFTHEDESIGN & EXPECTEDPERMORMANCES
  • 10. Rome August 2005 Franco Bontempi / FRAMEWORKS 10 STRUCTURAL QUALITY - design life - railway runability - highway runability - free channel - robustness - durability - management GLOBAL GEOMETRY AND TOPOLOGY TOPOLOGY - suspension system - towers - towers foundation - anchor system - main deck - deck landing - ... GLOBAL GEOMETRY - main span - sx span - dx span SECTIONAL GEOMETRY - continuous girder sections - transverse section - main cables - hangers - towers - secondary elements MATERIALS CHARACTERISTICS - girders - cables SYNTHESIS OF STRUCTURAL SOLUTION AND DOCUMENTATION BOUNDARY CONDITIONS CONSTRAINTS: rigid and elastic constraints, imposed displacements NATURAL ACTIONS - temperature - wind - earthquake ANTROPIC ACTIONS a) permanent loading system b) variable - railway - highway c) accidental CONVENTIONALMODELING: QUASISTATICREPRESENTATION BASIC STRUCTURAL CONFIGURATION PARAMETERS - individuation - definition - uncertainty - description - bounding GLOBAL MODELING - 2D - 3D MODELING WITH DYNAMIC INTERACTION ALTERNATIVE STRUCTURAL CONFIGURATIONS GLOBAL OPTIMIZATION - topology - morphology - parametric LOCAL OPTIMIZATION - girders section - transverse section - restraint zone EXPERT AND FIXED CHOICES MEASURES a) qualitative b) materials volumes c) serviceability - modal characteristics - deflections - deformations - reversibility d) collapse scenarios - collapse characteristics - robustness e) accidental scenarios - configurations - risks DETAILED MODELING EXTENDED MODELING 1 2 3 4 5 6 7 Numerical Modeling for the Structural Analysis and Design of MESSINA STRAIT BRIDGE: subdivision and development of activities. FB - june 6, 2005 / franco.bontempi@uniroma1.it
  • 12. Rome August 2005 Franco Bontempi / FRAMEWORKS 12 DESCRIPTION OF THE STRUCTURE ๏ƒ˜ the first point regards the peculiar intrinsic characteristics of the structure: morphology, geometry (both global and local), topology of the resistant mechanisms; ๏ƒ˜ one is referring here to the domain of the structural problem.
  • 13. Rome August 2005 Franco Bontempi / FRAMEWORKS 13 Knowledge Models ๏ƒ˜ A thorough understanding of different knowledge representations is a vital part, since the ease of solving a problem is almost completely determined by the way the problem is conceptualized and represented. Models are: ๏ƒ˜ Ladders: hierarchical (tree-like) diagrams (as concept ladder, composition ladder, decision ladder and attribute ladder) ๏ƒ˜ Network Diagrams: they show nodes connected by arrows; the nodes might represent any type of concept, attribute, value or task, and the arrows between the nodes any type of relationship (as concept maps, process maps and state transition networks) ๏ƒ˜ Tables and Grids: representations that make use of tables or grids (as forms, frames, timelines and matrices/grids)
  • 14. Rome August 2005 Franco Bontempi / FRAMEWORKS 14 Knowledge tree
  • 15. Rome August 2005 Franco Bontempi / FRAMEWORKS 15 Evolutionary tree
  • 16. Rome August 2005 Franco Bontempi / FRAMEWORKS 16 Strategies ๏ƒ˜ From general to specific ๏ƒ˜ From prominent to concealed ๏ƒ˜ From qualitative to quantitative ๏ƒ˜ From extensive to narrow ๏ƒ˜ From global to local ๏ƒ˜ From coarse to fine ๏ƒ˜ From explicit to implicit
  • 17. Rome August 2005 Franco Bontempi / FRAMEWORKS 17
  • 18. Rome August 2005 Franco Bontempi / FRAMEWORKS 18 0 500 1000 1500 2000 2500 3000 3500 LUCE 1100 1298 1385 1410 1624 1991 3300 BISA N- VER RAZZ JIAN GYN HUM BER GRE AT AKA SHI MES SINA
  • 19. Rome August 2005 Franco Bontempi / FRAMEWORKS 19 The limits of structural systems
  • 20. Rome August 2005 Franco Bontempi / FRAMEWORKS 20 Majormodesof Evolutioninnature
  • 21. Rome August 2005 Franco Bontempi / FRAMEWORKS 21 Artificial evolution
  • 22. Rome August 2005 Franco Bontempi / FRAMEWORKS 22
  • 23. Rome August 2005 Franco Bontempi / FRAMEWORKS 23
  • 24. Rome August 2005 Franco Bontempi / FRAMEWORKS 24 EVOLUTION vs INNOVATION DESIGN PERFORMANCES
  • 25. Rome August 2005 Franco Bontempi / FRAMEWORKS 25 KNOWLEDGE REQUIRED BY AN EVOLUTIVE DESIGN NEW KNOWLEDGE REQUIRED BY AN INNOVATIVE DESIGN ACTUAL KNOWLEDGE BASIS KNOWLEDGE GROWTH PROCESS
  • 26. Rome August 2005 Franco Bontempi / FRAMEWORKS 26
  • 27. Rome August 2005 Franco Bontempi / FRAMEWORKS 27 deck arrangement
  • 28. Rome August 2005 Franco Bontempi / FRAMEWORKS 28 deck arrangement
  • 29. Rome August 2005 Franco Bontempi / FRAMEWORKS 29 highway girder section
  • 30. Rome August 2005 Franco Bontempi / FRAMEWORKS 30 railway girder section
  • 31. Rome August 2005 Franco Bontempi / FRAMEWORKS 31
  • 32. Rome August 2005 Franco Bontempi / FRAMEWORKS 32 transverse element section
  • 33. Rome August 2005 Franco Bontempi / FRAMEWORKS 33 Enactmentofthemodel LOCAL KNOWLEDGE GLOBAL KNOWLEDGE
  • 34. Rome August 2005 Franco Bontempi / FRAMEWORKS 34 x x x x Fault Fault Fault Fault Overall plant 1st level Plant item 2nd level Control loop 3rd level Element/Component 4th level ๏ƒ˜ System ๏ƒ˜ Structural organism ๏ƒ˜ Multilevel analysis ๏ƒ˜ Sub structuring ๏ƒ˜ B- & D-regions DESCRIPTION: anatomy
  • 35. Rome August 2005 Franco Bontempi / FRAMEWORKS 35 SISTEMA STRUTTURALE PRINCIPALE ZONE SPECIALI DI IMPALCATO SISTEMA DI RITEGNO/SOSTEGNO SISTEMA STRUTTURALE SECONDARIO SISTEMA DI SOSPENSIONE IMPALCATO CORRENTE FONDAZIONI DELLE TORRI ANCORAGGI TORRI SELLE CAVI PRINCIPALI PENDINI CASSONI STRADALI CASSONE FERROVIARIO TRAVERSO INTERNE TERMINALI SISTEMA STRUTTURALE AUSILIARIO STRADALE FERROVIARIO FUNZIONAMENTO MANUTENZIONE EMERGENZA PONTE MACROLIVELLO MESOLIVELLO
  • 36. Rome August 2005 Franco Bontempi / FRAMEWORKS 36 Individuazione delle VARIABILI di progetto per ciascun elemento Individuazione degli ELEMENTI per ciascun componente Individuazione dei COMPONENTI di ciascuna sottostruttura SOTTOSTRUTTURAZIONE del sistema globale per lo studio di dettaglio delle singole prestazioni SISTEMA DI RITEGNO/SOSTEGNO FONDAZIONI DELLE TORRI ANCORAGGI TORRI
  • 37. Rome August 2005 Franco Bontempi / FRAMEWORKS 37 Web-based structure description
  • 38. Rome August 2005 Franco Bontempi / FRAMEWORKS 38
  • 39. Rome August 2005 Franco Bontempi / FRAMEWORKS 39
  • 40. Rome August 2005 Franco Bontempi / FRAMEWORKS 40
  • 41. Rome August 2005 Franco Bontempi / FRAMEWORKS 41
  • 42. Rome August 2005 Franco Bontempi / FRAMEWORKS 42
  • 43. Rome August 2005 Franco Bontempi / FRAMEWORKS 43
  • 44. Rome August 2005 Franco Bontempi / FRAMEWORKS 44
  • 45. Rome August 2005 Franco Bontempi / FRAMEWORKS 45
  • 46. Rome August 2005 Franco Bontempi / FRAMEWORKS 46 DEFINITION OF PRINCIPAL FUNCTIONS AND THEIR RELATIONS DEFINITION OF DETAILED OPERATIONS IN A STEP BY STEP WAY FUNCTION: physiology
  • 47. Rome August 2005 Franco Bontempi / FRAMEWORKS 47 Natural science anatomy
  • 48. Rome August 2005 Franco Bontempi / FRAMEWORKS 48
  • 49. Rome August 2005 Franco Bontempi / FRAMEWORKS 49 MAIN STRUCTURAL SYSTEM AUXILIARY STRUCTURAL SYSTEM SECONDARY STRUCTURAL SYSTEM SPECIAL DECK ZONES BRIDGE DECK HIGHWAY SYSTEM RAILWAY SYSTEM OPERATION MAINTENANCE EMERGENCY FOUNDATION OF TOWERS TOWERS ANCHORAGES SUPPORTING CONDITION HIGHWAY BOX-GIRDER CROSS BOX-GIRDER RAILWAY BOX-GIRDER INNER OUTER BRIDGE SUPERSTRUCTURE MACRO-LEVELS MESO-LEVELS MAIN CABLES HANGERS SUSPENSION SYSTEM SADDLES STRUCTURAL DECOMPOSITION
  • 50. Rome August 2005 Franco Bontempi / FRAMEWORKS 50 The landing of the bridge
  • 51. Rome August 2005 Franco Bontempi / FRAMEWORKS 51
  • 52. Rome August 2005 Franco Bontempi / FRAMEWORKS 52
  • 53. Rome August 2005 Franco Bontempi / FRAMEWORKS 53
  • 54. Rome August 2005 Franco Bontempi / FRAMEWORKS 54
  • 55. Rome August 2005 Franco Bontempi / FRAMEWORKS 55
  • 56. Rome August 2005 Franco Bontempi / FRAMEWORKS 56
  • 57. Rome August 2005 Franco Bontempi / FRAMEWORKS 57
  • 58. Rome August 2005 Franco Bontempi / FRAMEWORKS 58
  • 59. Rome August 2005 Franco Bontempi / FRAMEWORKS 59
  • 60. Rome August 2005 Franco Bontempi / FRAMEWORKS 60
  • 61. Rome August 2005 Franco Bontempi / FRAMEWORKS 61
  • 62. Rome August 2005 Franco Bontempi / FRAMEWORKS 62
  • 63. Rome August 2005 Franco Bontempi / FRAMEWORKS 63
  • 64. Rome August 2005 Franco Bontempi / FRAMEWORKS 64
  • 65. Rome August 2005 Franco Bontempi / FRAMEWORKS 65 Foundations Towers Main cables Hangers Bridge deck Seismic load transfer mechanism
  • 66. Rome August 2005 Franco Bontempi / FRAMEWORKS 66 FACTORS INFLUENCING STRUCTURAL COMPLEXITY NON LINEAR BEHAVIOR LINEAR
  • 67. 3300183 183777 627 960 3300 m 810 +77.00 m +383.00 +383.00 +54.00 +118.00 +52.00 +63.00 3300183 183777 627 960 3300 m 810 +77.00 m +383.00 +383.00 +54.00 +118.00 +52.00 +63.00 CONTROL DEVICES SOIL BEHAVIOR MATERIAL NONLINEARITY SOIL/STRUCTURE INTERFACE CONTACT HANGERS TOWERS MAIN CABLES GEOMETRIC NONLINEARITY NONLINEARITY
  • 68. Rome August 2005 Franco Bontempi / FRAMEWORKS 68 FACTORS INFLUENCING STRUCTURAL COMPLEXITY LOW AMBIGUITY UNCERTAINTY HIGH NON LINEAR BEHAVIOR LINEAR
  • 69. 3300183 183777 627 960 3300 m 810 +77.00 m +383.00 +383.00 +54.00 +118.00 +52.00 +63.00 3300183 183777 627 960 3300 m 810 +77.00 m +383.00 +383.00 +54.00 +118.00 +52.00 +63.00 STRUCTURAL MODEL LOADING SYSTEM GEOMETRY AND MATERIAL UNCERTAINTY
  • 70. Rome August 2005 Franco Bontempi / FRAMEWORKS 70 FACTORS INFLUENCING STRUCTURAL COMPLEXITY LOW AMBIGUITY UNCERTAINTY HIGH TIGHT COUPLING INTERACTIONS CONNECTIONS LOOSE NON LINEAR BEHAVIOR LINEAR
  • 71. 3300183 183777 627 960 3300 m 810 +77.00 m +383.00 +383.00 +54.00 +118.00 +52.00 +63.00 3300183 183777 627 960 3300 m 810 +77.00 m +383.00 +383.00 +54.00 +118.00 +52.00 +63.00 TRAFFIC โ€“ STRUCTURE WIND - STRUCTURE SOIL - STRUCTURE INTERACTION GLOBAL/LOCAL STRUCTURAL BEHAVIOUR
  • 72. Rome August 2005 Franco Bontempi / FRAMEWORKS 72
  • 73. Rome August 2005 Franco Bontempi / FRAMEWORKS 73
  • 74. Rome August 2005 Franco Bontempi / FRAMEWORKS 74
  • 75. Rome August 2005 Franco Bontempi / FRAMEWORKS 75 Un-deployable objects: intricate interactions
  • 76. Rome August 2005 Franco Bontempi / FRAMEWORKS 76 System complexity
  • 78. Rome August 2005 Franco Bontempi / FRAMEWORKS 78 DECISIONNEGOTIATION & REFRAMING WIND & TEMPERATURE EARTHQUAKE ANTROPICACTIONS (RAILWAY&HIGHWAY) STRUCTURALBEHAVIOR& PERFORMANCEASSESSMENT MODEL
  • 79. Rome August 2005 Franco Bontempi / FRAMEWORKS 79 GLOBAL LEVEL LOCAL LEVEL Hierarchy and size of actions / performances
  • 80. Rome August 2005 Franco Bontempi / FRAMEWORKS 80 Ambientali Antropiche Azioni Interazione con il campo gravitazionale terrestre Interazione dinamica con lโ€™ambiente meteorologico Interazione terreno-struttura Interazione quasi-statica con lโ€™ambiente meteorlogico Carichi permanenti strutturali Carichi permanenti non strutturali Carichi permanenti strutturali secondari Vento Tromba dโ€™aria Tempesta Sisma Cedimenti delle fondazioni Rigetto di faglia Variazione termica stagionale Variazione termica diurna Carichi da traffico Intenzionali Non intenzionali Incendio Stradale Pedonale Ferroviario Carrelli per manutenzione Esplosione Scavalcamento barriere Manomissione Cassone ferroviario Urto di aereomobile Urto di natante Impalcato ferroviario Impalcato stradale Ancoraggio ยฝ Luce ยผ Luce Torre Torre lato Sicilia Ancoraggio lato Sicilia Traslazionale X Traslazionale Y Traslazionale Y Rotazionale X Traslazionale Z Rotazionale X Pendini Impalcato Cavi Torri Uniforme Differenziale interno-esterno Uniforme Differenziale interno-esterno Stese di carico globali Modello dinamico Dislocata sui cassoni stradali Modello dinamico Modello dinamico Stese di carico globali Modello dinamico Impronta locale Esterna Interna Cassone Torre Stradale Ferroviario Ancoraggio Torre Pendino Cavalletto Torre Cavo Pendino Impalcato Ancoraggio Impalcato Rotazionale Y Rotazionale Z Traslazionale Z Rotazionale Y Sovrastruttura stradale Armamento ferroviario Impianti Uniforme Non uniforme 1 Non uniforme 2 Modello dinamico Modello dinamico Spostamento blocco torre Globale Globale Carico locale sullโ€™impalcato Modello dinamico Uniforme Non uniforme 1 Non uniforme 2 In assenza di traffico In presenza di traffico Uniforme Uniforme Ferroviario 1 Ferroviario 2 Ferroviario 3 Ferroviario 4 Ferroviario 5 Ferroviario 6 Ferroviario 7 Ferroviario 8 Ferroviario 9 Ferroviario 10 Stradale 1 Stradale 2 Stradale 3 Stradale 4 Stradale 5 Stradale 6 Stradale 7 Stradale 8 Stradale 9 Stradale 10 Stradale 11 Stradale 12 Azioni al contorno del dominio strutturale Azioni nel dominio strutturale Azioni Funzionali Azioni Incidentali Azioni chimico-fisiche Differenziale sulla sezione Differenziale sulla sezione Carichi funzionali accessori Impronte locali del carico Azione reale del traffico Carico locale sul binario Azione reale del traffico Stese di carico globali Azione reale del traffico Modello dinamico Svio Deragliamento Urto sulle barriere di sicurezza Trasverso Torre Cavo Pendino Impalcato Ancoraggio Corrosione Ancoraggio lato Calabria Torre lato Calabria Traslazionale X Traslazionale X Traslazionale Y Rotazionale X Traslazionale Y Traslazionale Z Rotazionale X Rotazionale Y Traslazionale Z Rotazionale Y Rotazionale Z Rotazionale Z Rotazionale Z Traslazionale X Pendini Impalcato Cavi Torri Cassone ferroviario Accessi ed arredi gambe trasversi funi Cassone stradale Impianti trasversi Pendini Impalcato Cavi Torri Dispositivi per il controllo strutturale e aerodinamico funi Dispositivi per il controllo strutturale e aerodinamico Distanziatori meccanici Smorzatori Selle Impalcato Torri Cavi Guaine protettive Guaine protettive Pendini ๏€  ๏€  ๏€  ๏€  ๏€  Ambientali Azioni Interazione dinamica con lโ€™ambiente meteorologico Interazione terreno-struttura Vento Tromba dโ€™aria Tempesta Sisma Cedimenti delle fondazioni Rigetto di faglia ยฝ Luce ยผ Luce Torre Torre lato Sicilia Ancoraggio lato Sicilia Traslazionale X Traslazionale Y Traslazionale Y Rotazionale X Traslazionale Z Rotazionale X Cavi Differenziale interno-esterno Stese di carico globali Modello dinamico Modello dinamico Rotazionale Y Rotazionale Z Traslazionale Z Rotazionale Y Uniforme Non uniforme 1 Non uniforme 2 Modello dinamico Modello dinamico Spostamento blocco torre Modello dinamico Uniforme Non uniforme 1 Non uniforme 2 In assenza di traffico In presenza di traffico Uniforme Stradale 1 Stradale 2 Stradale 3 Stradale 4 Stradale 5 Stradale 6 Stradale 7 Stradale 8 Stradale 9 Stradale 10 Stradale 11 Azioni al contorno del dominio strutturale Azioni chimico-fisiche Torre Cavo Pendino Impalcato Ancoraggio Corrosione Ancoraggio lato Calabria Torre lato Calabria Traslazionale X Traslazionale X Traslazionale Y Rotazionale X Traslazionale Y Traslazionale Z Rotazionale X Rotazionale Y Traslazionale Z Rotazionale Y Rotazionale Z Rotazionale Z Rotazionale Z Traslazionale X Actions decomposition
  • 81. Rome August 2005 Franco Bontempi / FRAMEWORKS 81 Carichi da traffico Stradale Pedonale Ferroviario Carrelli per manutenzione Scavalcamento barriere Cassone ferroviario Stese di carico globali Modello dinamico Dislocata sui cassoni stradali Stese di carico globali Modello dinamico Impronta locale Globale Carico locale sullโ€™impalcato Ferroviario 1 Ferroviario 2 Ferroviario 3 Ferroviario 4 Ferroviario 5 Ferroviario 6 Ferroviario 7 Ferroviario 8 Ferroviario 9 Ferroviario 10 Stradale 1 Stradale 2 Stradale 3 Stradale 4 Stradale 5 Stradale 6 Stradale 7 Stradale 8 Stradale 9 Stradale 10 Stradale 11 Stradale 12 Azioni Funzionali Carichi funzionali accessori Impronte locali del carico Azione reale del traffico Carico locale sul binario Azione reale del traffico Stese di carico globali Azione reale del traffico Modello dinamico Svio Urto sulle barriere di sicurezza
  • 82. Rome August 2005 Franco Bontempi / FRAMEWORKS 82 COMPLEXITY STOCHASTICSDETERMINISM Qualitative Risk Analysis Quantitative Risk Analysis Pragmatic Risk Analysis Strategies to consider contingency
  • 83. Rome August 2005 Franco Bontempi / FRAMEWORKS 83 Bounding strategies: anti-optimization process p ๏ฌ(p) ๏ฌ p ๏ฌ(p) ๏ฌ
  • 84. Rome August 2005 Franco Bontempi / FRAMEWORKS 84 Disclosure of failure
  • 85. Rome August 2005 Franco Bontempi / FRAMEWORKS 85 FAILURE LOCAL BEHAVIORS HIDDEN DEFECTS EXCEPTIONAL CONDITIONS IN-DEPTH SAFETY PSYCHOLOGICAL PRECURSORS SAFETY AFFECTING ACTIONS HIDDEN ERRORS AT HIGHER MANAGEMENT LEVELS
  • 86. Rome August 2005 Franco Bontempi / FRAMEWORKS 86 HAZARD IN-DEPTH DEFENCE HOLES DUE TO ACTIVE ERRORS HOLES DUE TO HIDDEN ERRORS SINCHRONICITY: inconstant connection through contingence, equivalence, or meaning
  • 88. Rome August 2005 Franco Bontempi / FRAMEWORKS 88 PERFORMANCE ROBUSTNESS QUALITY DAMAGE or ERROR REQUIRED PERFORMANCE NOMINAL PERFORMANCE NOMINAL SITUATION
  • 89. Rome August 2005 Franco Bontempi / FRAMEWORKS 89
  • 90. Rome August 2005 Franco Bontempi / FRAMEWORKS 90
  • 92. Rome August 2005 Franco Bontempi / FRAMEWORKS 92 REAL WORLD ORGANIZATION OF THE STRUCTURAL PROBLEM ENACTMENT OF ATTENTION: FOR- & BACK-GROUND SELECTION OF CONCEPTUAL FRAMEWORK RETENTION OF MODELLING AND RESULTS
  • 93. Rome August 2005 Franco Bontempi / FRAMEWORKS 93 ๏ƒ˜ Context dependence ๏ƒ˜ Contrast effect ๏ƒ˜ Recency effect ๏ƒ˜ Halo effect ๏ƒ˜ Plasticity ๏ƒ˜ Order effects ๏ƒ˜ Pseudo-opinions ๏ƒ˜ Vividness ๏ƒ˜ Wishful thinking ๏ƒ˜ Anchoring ๏ƒ˜ Social loafing ๏ƒ˜ Conformity ๏ƒ˜ The representativeness heuristic ๏ƒ˜ Law of small numbers ๏ƒ˜ Hot hand ๏ƒ˜ Neglecting base rates ๏ƒ˜ Nonregressive prediction ๏ƒ˜ Synchronicity ๏ƒ˜ Causalation ๏ƒ˜ Salience ๏ƒ˜ Minority influence ๏ƒ˜ Groupthink ๏ƒ˜ Self-fulfilling prophecies
  • 94. Rome August 2005 Franco Bontempi / FRAMEWORKS 94
  • 95. Rome August 2005 Franco Bontempi / FRAMEWORKS 95
  • 96. Rome August 2005 Franco Bontempi / FRAMEWORKS 96 COERENCE OF THE MODEL 1 2 DISSONANCE, ANOMALY, IRREGULARITY, UGLINESS, โ€ฆ.
  • 97. Rome August 2005 Franco Bontempi / FRAMEWORKS 97 CAPACITY TO BREAK OUT THE TRAPS
  • 98. CONCLUSION THE WEIGHT OF THE HUMAN SIDE
  • 99. Rome August 2005 Franco Bontempi / FRAMEWORKS 99 STRESS STATE FB-14-09-04 [Mpa] PP PN QA VV CAVO TORRE riferimento 1,00 1,00 0,00 0,00 650 155 SLS-4 1,00 1,00 1,00 0,00 800 205 150 50 incremento per QA SLS-5 1,00 1,00 1,00 1,00 810 260 10 55 incremento per VV riferimento 1,10 1,50 0,00 0,00 730 185 SLS-4 1,15 1,50 1,50 0,00 955 260 225 75 incremento per QA SLS-5 1,15 1,50 1,10 1,00 930 330 TOWERCABLE SLS-4 SLS-5 ULS-4 ULS-5
  • 100. Rome August 2005 Franco Bontempi / FRAMEWORKS 100