Project GuideDr. MD Hussain

Head Of Dept. (CIVIL)

BATCH-18• K.Dinesh Reddy(83)• P.Eswar (A1)• S.K.Riyaz (A9)• V.Venkat Ramana Reddy(C0)• B.Nirmal Kumar(118)

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GOKARAJU RANGARAJU INSTITUTE OF ENGINEERING AND TECHNOLOGY

DEPARTMENT OF CIVIL ENGINEERING

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Contents:

1) Abstract 2) Introduction3) Composite Deck Bridge

a)The structural components of composite bridgeb)Advantages of composite deck bridge

4) Design Procedure 5) Literature Survey6) References

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Abstract:

The most common type of composite deck bridge comprises of RC continuous slab supported by steel plate girders . In a composite deck bridge ,the individual materials are used efficiently since concrete is strong in compression and steel in tension . This type of deck bridge facilitates speedy erection of prefabricated steel girders and considerably reduces the cost of form work . The saving in overall depth of the beams leads to saving in the lengths of approaches in the case embankments

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Introduction :

What is a bridge?

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Types of bridges: Based on Structure

Beam bridge Truss bridge Cantilever Bridges Arch bridge

Tied arch bridge Suspension bridges cable-stayed bridge

Composite Deck Bridge :

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The structural components of composite deck

bridge are:

• RC continuous slab

• Steel plate girders

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Shear Connectors

Flanges

Web

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Advantages:•High Effeciency

•Light Weight & Rapid Installation

•Zero Maintenance

•Highly resistant to earthquakes.

•As deck slabs are not thick and thus easy to demolish and remove.

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Types Of Loads Acting On Structure:

• Dead load• Live load • Impact load• Wind load • Earthquake load

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a) Assumption of cross-sectional details of deck

b) Design of deck slab

c) Live load Bending Moment

d) Dead load Bending Moment

e) Design of section

1)Cross-section of deck

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a) Dead load momentsb) Live load momentsc) Shear forcesd) Proportioning of trial section of web

plate

2.Design of steel plate girders

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e) Flange plates (top & bottom)f) Check for maximum stressesg)Connection between flange and webh)Intermediate stiffenersi)End bearing stiffeners

j) Connection of vertical stiffeners to web

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continuation …..

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k)Connection between bearing stiffner & webl)Design of shear connectors m)Check for ultimate strength of plate girder

(i)Flexural strength(ii)Shear strength

Continuation …..

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Buckling and crushing of web

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Diagonal stiffener

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1) Journal of Bridge Engineering-2004 (vol-9)Recommended procedures for Simplified Inelastic Design of Steel I-Girder Bridges J. Bridge Eng, 9(3), 230–242 By:Barth.k , Hartnagel ,Donalt W White, Michael G BarkerThis paper presents summary recommendations pertaining to new AASHTO procedures for simplified inelastic design of steel I girder bridges , effective plastic moment predictions based on the outcome equations are combined with the recent design method

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2) KSCE Journal of Civil Engineering-2001 (vol-5)Design of Transverse Joints In Composite Bridges with Precast Decks Issue 1, pp 17-27By:Chang- Su Shim PhD, Kyu-Yong Choi ,Sung-Pil ChangThis paper investigated about the 2 types of connection for precast deck bridge systems , shear connection & transverse joints between precast panels . It is necessary to apply longitudinal prestress to prevent crack and water leakage to transverse joints, assuming full prestressing is proposed. The long term behaviour of composite beam with precast deck is investigated through experiments for 430 days. From investigations loss of compressive stress at joints is high and it should be a major factor in determining the magnitude of initial prestress

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FRP-Balsa Composite Sandwich Bridge Deck with Complex Core Assembly

The aim of this work was to investigate to what extent the

performance of a glass fiber–reinforced polymer (GFRP) sandwich

slab-bridge with a uniform high-density balsa core could be improved in terms of structural efficiency and weight. The FRP arch reduced the force in the upper face sheet in the mid-span region and thus prevented compression failure of the latter, which led to a higher ultimate load

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REFERENCES : Data is collected from the following books1. Design of steel structures part –I by V.Rama chadra 2. Design of steel structures by V.Krishnam Raju3. Design of steel structures by S K Duggal4. Code books

a) IS 800 : 2007b) IRC 22 : 1986c) IRC 6 : 2010

5. Journals are collected from http://www.ascelibrary.org and also from http://www.sciencedirect.com

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Now we will collect the required data from the site and implement the above procedure for analysing that structure and also trying to design the new deck bridge by using the MIDAS Software……..