Week 10 Challenge

AIM – The aim of our is that, to Calculate the snow load for the bridges and Create the model in Staad Pro and analysis

the Structure.

INTRODUCTION – The Detail of Project for the bridge Given below

The Span of the Bridge is 10m

The snow is settled snow

The deck of bridge is flat with B <30 degree.

The depth of accumulation of snow is 1250 mm.

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

Step4:- After Create the support then go to the properties command and select geometry and assign the properties.

Step5:- Then Calculate the snow load as per IS 875 Part IV code

Design Snow Load

S=uSo

So is snow load on the ground

u is Shape Coefficient

So= Span of the Bridge* Depth of snow * Density of settled snow

As per IS 875 Part IV code Density of settled snow is 2 -3kN/m3

We taken the value of Density of settled snow is 3 kN/m3

So=10*1.25*3

=37.5 kN/m

As per IS 875 Part IV code value of Shape Coefficient for angle B<30 degree is, u = 0.8

S=u*So

=0.8*37.5

=30 kN/m

And also apply the minimum snow load considered for design of bridge is 9 kN/m as per clause 224 IRC 6.

Step6:- After go to the Load definitions and defined the Snow Load .

Step7:-Create the load and assign the load into model.

Step8:- Then slave the file and assign run analysis.

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

RESULT:- 30 kN/m the Snow load is acting in the bridge.

Axial force of model

Shear force Y of model

Shear force Z of model

Torsion of model

Bending Y of model

Bending Z of model

Reactions of model