In this presentation, introduction about different types of composite girder along with it's working is given. This presentation tells about the fabrication procedure of the Prestressed Concrete Steel Composite Bridge. It also deals with different components of system design and different stages of analysis of Prestressed Concrete Steel Composite Girder. It is also mentioned about finite element analysis procedure with elements selected for different materials, finite element analysis results, experimental investigation and examples with importance of such types of girder over other.

1. Under the Guidance of:-
Dr. P.K. Singh
Professor,
Dept. of Civil Engg. , IIT-BHU.
Presented By:-
Rohit Kumar Mittal
Roll No.- 10403EN001
IDD Part-IV
2013-141

2. Outlines:
 Introduction
 Other types of Composite Girder
 Design of Prestressed Concrete Steel Composite Girder
 Stresses in strands
 Finite Element Analysis
 Experimental Investigation
 Examples
 Conclusions
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3. Introduction
The PCSC girder is composed of light weight steel
section with shear studs on its top and bottom to
achieve composite action with pretensioning concrete
bottom flange and cast-in-place concrete deck.
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Other types of Prestressed Composite Girder:

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Fabrication
System
Design
PCSC
Girder

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Fabrication Procedure:

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System
Design
Section
Properties
and Loads
Service
Design
Strength
Design at
release
Ultimate
Strength
Design
Vertical
Shear
Design
Horizontal
Shear
Design
Deck
Design

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At prestress release
During deck
placement
In service
Design stages of PCSC Girder

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STRESSES IN STRANDS

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Pre
Processor
• It includes modeling, element type, material properties,
real constants, section definition and meshing.
Solution
• It includes defining load and type of analysis which is to
be done.
Post
Processor
• From this, results are obtained in various forms.
Finite Element Analysis

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S.No. Material Element Type
1. Concrete 8-Node SOLID 65
2. Prestressing Strands LINK 8
3. Steel Section 4-Node SHELL 181
4. Bond between Concrete and
Prestressing Strands
COMBIN 39
5. Shear Studs COMBIN 39
Elements for Finite Element Analysis

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Stresses at Mid-Span of Concrete Bottom Flange

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COMPARISONS OF STRESSES

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Experimental Investigation
Test setup for
Flexural Test

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Experimental Investigation
Test setup for
Shear Test

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0
0.5
1
1.5
2
2.5
3
PCSC
Girder
PC girder Steel
Girder
Self-weight
Cost
Self weight and cost of different girders w.r.t.
PCSC Girder

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Total length = 801 m.
Maximum Width = 30.9 m
Ilsun Bridge, Korea

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Lixhe Bridge, Belgium Total length = 309 m.

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Advantages
Easy Fabrication
Economic
Light Weight
High Flexure Strength

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Conclusions
• The PCSC girder is viable alternative for steel and prestressed
concrete girder in bridges.
• Amount and distribution of shear studs have no significant
influences on the stresses in concrete bottom flange.
• Stress and strain in concrete and steel section at mid span can
be accurately predicted using design calculations and FEA.
• Fabrication procedure is quite simple.
• Stresses in each section gradually increase from the bottom
fiber to top fibre.

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