This presentation shows the preliminary proposal of the Major Project undertaken in the final year of Civil Engineering. The project objective is to widen the bridge from 2 to 3 lane (oneway). presentation includes published journals by Authors relevant to the project. Also has solutions which are considered to be feasible to our project. Thank you for your interest in this project topic.

1. KLE Dr. M S SHESHGIRI COLLEGE OF ENGINEERING
AND TECHNOLOGY, BELAGAVI-590 008
PHASE 1, PRESENTATION 1
- By -
GROUP 13
SYED SAMDANI PASHA DESAI
RAMESH M BADIGER
SHAHROOQ FAROOQ
SANTOSH MAJAGI
UNDER GUIDANCE OF
Prof. AMIT ANADINNI
Department of
CIVIL ENGINEERING

2. TITLE OF THE PROJECT PROPOSED :
“ Widening of existing Ghataprabha Bridge from 2 to 3 lane “
( Bridge on NH47, part of Golden Quadrilateral )
PREFERENCE: STRUCTURAL DESIGN

3. SL.NO TITLE OBJECTIVE METHODOLOGY CONCLUSION
1
“Preliminary design and multi
criteria analysis of solutions for
widening an existing concrete
bridge”
(Case of the Bridge of Chaillot in Vierzon,
France)
Author: PIERRE FLINE. (2018)
A case study has been
chosen in order to
simulate under which
conditions the widening
of the bridge can be
performed.
Paper presents
multiple technical
solutions for widening
the Bridge conforming
to Eurocodes
Paper include solutions
like:
1. Extra PSC beam with
extra piers without
bearings.
2. Extra PSC beam with
extra cantilever piers.
2
“Widening and strengthening of
the Songpu Bridge”
Authors: Changyu Shao (Chief Eng.),
Hai Yan (Professional Senior Eng.),
Liang Chen (Senior Eng.), Yan Xu
(Associate Prof.) & Sunlin Cao (Post
Graduate Student).
To meet the requirement
of the increasing traffic,
the primary widening
design is to extend the
12 m wide bridge upper
deck into 24.5 m wide,
two-way six lanes deck.
Detailed design of the
upper and lower decks
of the main bridge is to
be initiated.
With economic and social
development, many old
bridges cannot meet the
ever increasing traffic
demands nowadays. From
the view point of
sustainable development,
building new bridges is
often unfavorable than
retrofit or widening the
old ones.
1. LITERATURE REVIEW

4. SL.NO TITLE OBJECTIVE METHODOLOGY CONCLUSION
3
“Method for Extending Life of
Existing Bridge: A Case Study”
Authors: A Recupero, N Spinella, C D
Scilipoti. (2016)
Preliminary analyses,
pointed out that the existing
structure was not fit to allow
the transit of the carriage
railway and it was therefore
necessary or its adjustment
or its
replacement.
Different hypotheses of
adjustment have attentively
been valued:
1. Reinforcement of principal
beams with FRP plates on
the bottom face of the
beams.
2. Reinforcement of principal
beams with a system of
un-bonded prestressing,
externally to cross-section
of beams.
The design of retrofitting for
the considered case of study,
the “Terdoppio” bridge, has
been investigated by several
numerical analyses which have
provided precious information
about the load capacity and
the tension and strain fields at
different load stages of beam.
4
“Design of Prestressed Concrete
Bridges to Accommodate Future
Widening”
Author: Kenneth W. Shushkewich
Paper discusses how a two-
lane prestressed concrete
bridge can be designed and
constructed so that it can be
widened easily into a three-
or four- lane bridge in the
future
The methods presented are
the strutted box widening
method (SBWM), which
applies to concrete box girder
bridges, and the strutted
girder widening method
(SGWM), which applies to
precast concrete girder bridges
The introduction of the SBWM
and SGWM has effectively
added a new bridge type to
the repertoire that bridge
designers and constructors can
consider in search of the best
possible solution for any
particular application
1. LITERATURE REVIEW CONTINUED...

5. As our population grows, the transportation infrastructure needs to improve
to meet this demand.
Maintaining road serviceability during infrastructure upgrades as well as
maximizing the retention of the existing assets are key considerations(when
rehabilitating) during these improvements and upgrades(new or old).
The Bridge design is a complex process, involves the strict provisions laid by
IRC codes which drive the path in the making.
*PRE-REQUISITES
1. IRC codes : IRC: 6-2017 (loads and load combinations) and IRC: 112-2011
2. Software preference : SAP2000
2. INTRODUCTION

6. The NHAI was established by the National
Highways Authority of India Act, 1988.
NHIDCL is a fully owned company of GoI
under MoRTH and was created to develop,
maintain and manage the national highways.
Bridge is located in Belagavi district of
karnataka, India
2.1 NATIONAL HIGHWAYS AUTHORITY OF INDIA
Source: https://en.wikipedia.org/wiki/National_highways_of_India

7. The design period of bridge is say maybe 60 years. Sooner or later, some
works must however be performed before their end of life in order to guarantee or
increase their safety, functionality and capacity.
Some works on an existing bridge can be required for two main reasons:
1. The bridge is said to be “structurally deficient” or
2. The bridge is said to be “functionally obsolete.”
2.2 BACKGROUND

8. 1. Structurally deficient : i.e, it is too deteriorated and it might be dangerous to
make use of it (large cracks, large deflections etc).
2. Functionally obsolete : i.e, it is in a good shape to be used but it does not meet
the requirements of its functionality anymore.
2.2 BACKGROUND CONTINUED…

9. A Ghataprabha bridge had to be widened from 2 lane to 3 lane
due to an increase in traffic volume. The existing bridge has been
designed in 2003. Considering the reserved design period,
it is necessary to widen the existing PSC Girder bridge.
2.3 PROBLEM STATEMENT

10. 1. Considering the pier to be overdesigned* according to 3 lane load
at the time of initial design.
2. Considering the Design period of bridge to be 60 years.
3. Considering the bridge to be structurally sound.
2.4 ASSUMPTIONS
* considering the dimensions and the reinforcement details from the plan drawings. But, need to be
reaffirmed to the current traffic volume.

11. Total span 192.8 m
Total piers 7
Spacing between the piers 24.1 m
Width of carriage-way including pedestrian pathway 9.25 m
Foundation type
1 Abutment and 2 Piers – Pile
Others with Shallow
Girder type T-type Bridge Girder
HFL 17 m from existing GL
2.5 EXISTING BRIDGE DETAILS

12. Existing 2 lane Bridge over Ghataprabha River as on 21 November 2021

13. Image from Bhuvan 3D
Image from Google Maps

14. 6
Existing pier with extra piers
Existing bridge design Existing pier with widened pier head
1 3
2
Credits: Drawings from Paper by author PIERRE FLINE

15. 2.6 HIERARCHY
DETAILED STUDY OF
EXISTING BRIDGE
• Plan
• Dimensions
• Foundation details (Depth)
• Materials
DATA AGGREGATION
• Traffic Data
• % increase in volume
ANALYSIS AND
DESIGN
• Analysis as per IRC
Standards
• Design for required
carriage-way as per
results incurred from
analysis

16. 1. To widen the existing bridge due to the increase in traffic volume.
2. To design the solution(results) that will be preliminary, and should be sufficient
to ensure that the solution is realistic and solve the problem of widening.
3. OBJECTIVE

17. Thankyo
u

18. Currently this project is in
midway, further progress
will be intimated
we will be posting detailed presentation and PDF
format report