Week 5 Challenge

AIM – The aim of our is that, to Calculate the Design Wind Loads for the bridges to be Designed at Mumbai and Create the

model in Staad Pro and analysis the Structure.

INTRODUCTION – The Detail of Project for the bridge to be Designed at Mumbai Given below

The height of the bridge above ground level is 9 m

It is Located in open terrain with well scattered obstruction of height less than 10m.

The pier size is 1.5* 1.5 m

Assume I Girder size is 0.5*0.5 m

PROCEDUCE IN DETAIL:-

STEP1:- First create the node and select the add beam Command and create the beam.

STEP2:- Then, Select the beam then go to the translation repeat Command and create the beam

Step3:- Then using the plate command and Create the plate with help of translation command

Step4:- After Create the model then go the support command create the fixed supports and assign the supports.

Step5:- After Create the support then go to the properties command and select geometry and assign the properties

Step6:- After go to the Load command and go to the Load cases details Create Wind Load

Step7:- Then Calculate the Design Wind Loads as per IS Code 875 part III 2015

DESIGN WIND SPEED Vz =V*K1*K2 *K3*K4

K1= Probability Factor

K2= Height Factor

K3= Topography Factor

K4=Importance Factor

Vb =Wind Speed

According to IS Code 875 part III 2015 Appendix A Page (Page No. 96) Wind Speed of Mumbai City 44 m/s

The value of K1 is taken 1 on the basis Wind speed and Class of structure According to IS Code 875 part III 2015 Table no 1 in page no 23

The value of K2 is taken 1 on the basis Height and Terrain According to IS Code 875 part III 2015 Table no 2 in page no 24

The value of K3 is taken 1 on the basis The effect of topography According to IS Code 875 part III 2015 Section 5.3.3 in page no 30

The value of K4 is taken 1 on the basis the effect of Cyclonic Region According to IS Code 875 part III 2015 Section 5.3.4 in page no 30

Vz=44*1*1*1*1

=44 m/s

Pz=0.6*Vz^2

=0.6*44*44

=1161.6 N/m2

=1.1616KN/m2

Wind load in Pier = Pz * Depth

=1.1616*1.5

1.7424 Kn/m

Wind load in Girder= Pz* Depth

=0.808 Kn/m

Then create the load and assign into the Model.

Loading Diagram Z

Loading Diagram X

Step8:- Then slave the file and assign run analysis

Report

Step9:- Then Check the Deflection, displacement and all deformation on the structural element

RESULT:-There is 1.7424kn/m Wind Load act on the Pier and 0.808 kn/m wind Load on the Girder

Axial Force , Shear Z , Shear Y

Torsion , Bending Z , Bending Y

REACTIONS

SFD AND BMD Value