Design of Cable Stayed Bridge Using SAP2000 (Powerpoint Presentation)

بسم اهلل الرحمن الرحيم2009STRUCTURE PROJECT

CABLE STAYED BRIDGE

2 SPANS 160 M FOR EACH

22 M WIDTH

PREPARED BY

MOHAMED ELGOHARY MOHAMED

PYLON

SHAPE A OR DELTA

CABLES

THE DECK

BEARINGS

MATERIAL ROPERTIES FOR THE DECK AND PYLONS

COCRETE STRENGTH C28 = 500Kg/cm2

MODULUS OF Elasticity =335 t /cm2

Poison ratio =0.2

Thermal coefficient =0.00001

Properties of stay cables

Nominal diameter =15.7 mm

Nominal tensile strength(U.T.S) = 17.7 t/cm2

Nominal weight =1.18 kg/m

Modulus of elasticity = 1950 t/cm2

Allowable stress in (U.L.S) = 0.6 U.T.S

MODELLING AND ANALYSIS

BY SAP 2000

DEFINE

LANES

VEHICLES

VEHICLES CLASSESS

BRIDGE RESPONSES

DEFINE

WIND LOAD

CASES FOR WIND LOAD2

1- CASE

DEAD LOAD + LIVE LOAD

1 KN /M2

2-CASE

DEAD LOAD

2 KN /M2

LOAD COMBINATION FOR WIND LOAD

0.9(1.35D.L+ 1.35 VEHICLE+0.9 W.L)

DEFINE

EARTHQUAKE LOAD CASE

LOAD COMBINATION FOR EQ

( D.L + 0.2 VEHICLE+1.0 EQ)

LOAD CASE OF

TORSION

2 LANES -1 WAY OCCUPY

OTHER 2 LANES ARE EMPTY

LOAD CASE OF

TORSION

2 OUTER LANES OCCUPY

OTHER LANES EMPTY

FINAL RESULTS

THE DECK

KN107784.905 -MAX AXIAL FORCE =

MOMENT

MAX +ve MOMENT=140513.3679 KN.M

MAX – ve MOMENT = -130005.346 KN.M

TORSION

MAX TORSION =10965.1112 KN.M

SHEAR

MAX SHEAR = 12041.742

PYLON

AXIAL FORCE = -194879.9 KN

MAX M3 = -50303.4 KN.M

MAX M2 = 30673.5308 KN.M

CONNECT BEAM

AXIAL FORCE = -8661.938 KN

MAX M3 = 32051.158 KN.M

MAX M2 = 4008.7672 KN .M

THE DECK SECTION

PYLON SECTION AT TOP

PYLON SECTION AT BOTTOM

CONNECT BEAM SECTION

FINAL PRETENSION

FINAL DEFLECTION

FINAL AREA STEEL FOR

CABLES

سبحان ربك رب العزة عما يصفون)

و سالم على المرسلين*

(و الحمد هلل رب العالمين *