This is the initial proposal on the bridge damage assessment prepared by the BE Civil Students 2023

1. BCE Proposal Defence
Damage Study of 3 Bridges and
recommendation of retrofitting
Submitted by: Roll no:
Ankit Wasti THA076BCE09
Ashok Bhurtel THA076BCE19
Balkishun Kewat THA076BCE24
Bimal Bhusal THA076BCE31
Bishal Lamsal THA076BCE35
Diwakar Khatiwada THA076BCE40
Supervisor:
Date: 2080/03/08
Tribhuvan University
Institute of Engineering
Thapathali campus
Department of Civil Engineering

2. ABSTRACT:
The project begins with a thorough
review of existing literature on bridge
damage. Field investigations are
carried out to gather data on bridge
conditions. The collected data is
then processed and analyzed using
data analytics techniques and
structural engineering
principles.Based on the damage
assessment results, an appropriate
re-strengthening strategy is
formulated for each bridge.

3. INTRODUCTION
A
LITERATURE
REVIEW
B
SPECIFIC
OBJECTIVE
D
METHODOLOGY
E
EXPECTED
OUTCOMES
F
TABLE OF CONTENT
OBJECTIVES
c
WORK PLAN
G

4. INTRODUCTION
• Bridges are lifelines of a Nation’s
road infrastructure
• Bridges form the vital link of any
road/highway network.
• Nepal of going to build it’s 10,000th
bridge this year
• Bridge construction is also going to
be rapid in this decade
• Maintaining safety and
serviceability of bridges during their
lifetime deserves highest priority

5. • Periodic and insightful inspection of
highway bridges is essential input for any
effective bridge mangement system
• There are 3 types of inspections in
practice: Periodic, Fracture-
Critical,Damage Inspection
• Primarily, visual obervation suplemented
by assesment of varius distresses, using
Non-Distructive Tests, will be used.
• Various challenges such as traffic
obstruction, accidental chances,
pedestrian walking can slow down the
inspection part of the insepection.
INSPECTION IPSUM DOLOR
Proper bridge inspection in Minnesota, USA.

6. • Maintenance of bridges is equally
important to that of construction
• However, maintenance of bridges
generally gets neglected because of the
prevailing misconception that the bridges
once constructed do not need any
substantial maintenance
• In the absence of reguar inspection and
systematic approach, presently, ad-hoc
decisions are taken as a sort of fire-
fighting operation or crisis management.
• Lack of proper regular inspection and
maintenance, has lead to deterioration
and collapse of bridges rather early in
their life.
Maintenance
A view of Dudhaura Bridge, which has caved in, along the Pathlaiya-Nijgad
road, in Bara.

7. • 1.Addition of new structural elements,
such as steel or reinforced concrete
members, to increase load-carrying
capacity.
• 2.External post-tensioning to provide
additional strength and improve the
bridge's resistance to bending and shear
forces.
• 3.Replacement or repair of structural
elements
• 4.Retrofitting for seismic resilience
REPAIRING IPSUM DOLOR
Bridge Repairing Services in Zirakpur India.

8. Series of IRC Codes
1
Parke, G., & Hewson, N. (2008). ICE manual
of bridge engineering.
2
Bridge Deck Quality Indexing based on Non-Destructive
Tests: (Umesh Pant and Jagdish Shrestha)
3
Nepal Bridge Standard 2067
4
LITERATURE
REVIEW

9. The general objectives of this project are as follow:
1.Surface study of bridges
2.To develop a comprehensive framework for bridge damage assessment and
re-strengthening in the Kathmandu Valley, with the aim of enhancing the
resilience and safety of transportation networks in the region
OBJECTIVES

10. review and analyze
existing literature
on bridge damage
assessment
methodologies
A
propose an
integrated
approach for
bridge damage
assessment
B
assess the
damage inflicted
on bridges in the
Kathmandu
Valley
C
develop a
methodology for
prioritizing
retrofitting efforts
D
propose
retrofitting
strategies for
damaged
bridges
E
evaluate the
feasibility and cost-
effectiveness of
proposed
retrofitting
measures
F
SPECIFIC OBJECTIVES

11. Availability of Bridge Data
Accessibility to Bridge Sites
Stereotypical behaviour of Selected Bridges
Adequate Resources and Timeframe
ASSUMPTIONS
ASSUMPTIONS

12. Lack of comprehensive and up-to-date data
Heavy Traffic
Inaccessibility of Sub Structures
Lack of proper management system
PROBLEM STATEMENTS:
Problem
Statements

13. 01
METHODOLOGY

14. Selection of Study Area:
For the study area, 3 bridges in Kathmandu
valley are selected that represents not only the 3
different districts but also the different types of
bridges that are to be studied for more versatility.

15. 1.Bagmati bridge
joining Kupandole
and Thapathali:
2.Manohara bridge
joining Lokanthali
and Judibuti:
3.Tinkune Bagmati
Bridge:

16. 2 3 4 5 6
Visual inspection
Conduct a visual inspection
of the bridges to identify
visible signs of damage
NDT
Utilize non-destructive testing techniques
to assess the structural integrity of bridges
without causing damage using rebound
hammer.
Structural analysis
Perform structural analysis
using computer modeling and
simulation software.
Data collection
Analyze the collected data,
including inspection
reports, NDT results
Risk Assessment
Develop a risk assessment framework
to evaluate the risks associated with
each bridge based on its condition,
location, usage, and potential
consequences of failure.

17. The retrofitting methods used in this case study demonstrate the importance of adopting new technologies
and techniques to maintain and improve the safety of existing bridge structures. retrofitting methods used
included the following:
1. Expanded Seismic Joints:
The structure’s seismic joints were extended to allow more movement during an earthquake
2. Enhanced Deck Durability:
The bridge deck was resurfaced with a new, more durable material
3. Expansion Joints:
The old expansion joints were replaced with new ones that can handle greater movement and provide
better support to the bridge
Retrofitting/Strengthening:

18. EXPECTED OUTCOMES:
• Identification of any structural issues of deficiency
• Load analysis
• Recommendation for maintenance or repairment
• Assessment of remaining service life

19. 20-May 30-May 9-Jun 19-Jun 29-Jun 9-Jul 19-Jul 29-Jul 8-Aug 18-Aug
Group Formation
Project Selection
Site Selection
Proposal Writing
Proposal Amendment
Presentation Preaparation
Proposal Defense
Site Survey
NDT
Mid term defense preparation
Mid term defense
Literature Review
Gantt Chart
Axis
Title
Start Date
Days to complete

20. THANKS