Challenge

Week 7 Challenge

RRprasanna Venkatesh3 Mar 2023

DESIGN

DESIGN AND ANALYSIS OF BRIDGE WITH WATER CURRENT LOADS

AIM

To Design and analyse a bridge with Water current loads using STAAD Pro. Software.

INTRODUCTION

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

Max. velocity = √2 x Vmean

= √2 x 3 = 4.24 m/s

Water current ,P = 52 KV^2

= 52 x 0.66 x 17

= 617.75 KN/m2

PROCEDURE

Step 1 - Create Nodes by entering the corresponding X/Y/Z values in the Node table for Creation of geometry for Truss 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 and respective thickness for plates as given in the question data

Step 6 - After adding the properties click Loading tab and add load cases for Self weight,water current load

Step 7 - Then apply self weight to the entire geometry.

Step 8 - After applying the self weight add Live member load - Linearly varying load of 617.75 as per manual calculation to the Piers of the bridge for full length of the pier

step 9 - Then in Analysis and design tab define commands for PERFORM ANALYSIS and click run analysis.

RESULTS