Challenge

Week 8 Challenge

RRprasanna Venkatesh5 Mar 2023

DESIGN

DESIGN AND ANALYSIS OF BRIDGE WITH CENTRIFUGAL LOAD

AIM

To Design and analyse a bridge with Centrifugal load using STAAD Pro. Software.

INTRODUCTION

As per the given data and standard formulas the centrifugal load is being calculated manually.

As given in question Live load is 70 KN for 70 R tracked vehicle

so,Centrifugal force = WV^2/127 R

= 70 x 75^2/127 x 3

= 1034 KN

PROCEDURE

Step 1 - Create Nodes by entering the corresponding X/Y/Z values in the Node table for Creation of geometry for bridge structure with elements such as Piers,Beams,Deck slab etc.,

Step 2 - After creating the nodes connect those nodes with add beam option.

Step 3 - Then Click specification tab and click fixed support tab

Step 4 - After that in create support dialog box add fixed support for all the piers in the geometry using assign for selected nodes option.

Step 5 - Then in Properties tab click Prismatic and add the Rectangle sections for beams - 300mm x 500mm,Circular dimension for piers - 1.5mm dia and 500mm thickness for plates.

Step 6 - After adding the properties click Loading tab and define vehicle definition add 1034 KN as axle load and distance of 3.6m b/w axles.

Step 7 - Then apply Load generation for required no of loads click add and then find out the initial position of vehicle by using select node option and enter the corresponding x,y,z values also enter increment value.

step 8 - Then in Analysis and design tab define commands for PERFORM ANALYSIS and click run analysis.

RESULTS