Week 7 Challenge

AIM AND INTRODUCTION:

To calculate the water current forces for the bridge structure and apply the calculated loads in the Staad pro.

Given Data:

HFL =2m from ground level

Span =45m

Mean velocity =3m/s

Water Current Forces:

Ocean currents can be caused by wind, density differences in water masses caused by temperature and salinity variations, gravity, and events such as earthquakes or storms

Procedure:

Max. Velocity = √2*Vmean(Mean velocity=3m/s)

= √2*3

=4.24 m/s

Water Current,P=52*K*V²

According to IS Code 78-2000 Section VII table No 4 Page No 21 is value of K is 0.66 for Circular Piers

k = 0.66 for circular (Circular piers /piers ends with semi circular)

Therefore Water Current, P =52*.66*4.24²

=616.9912 Kn/m²

Modeling:

Creating 2 Spans with 45m interval

Assigning 0.4m thickness to slab plates

Assigning Main Girder Properties

Assigning Cross Girder properties

Complete render view of the structure

Appling Water current loads

Displaying results

Displaying slab plate results

Displaying Beams bending moment in z direction

Displaying Shear force in z direction(beams)