Project 1
AIM – The aim of our is that, to Calculate the dead load , IRS live loads , Earth pressure load , wind load and seismic
loads for the bridge structure at Ahmedabad Metro rail and Create the model in Staad Pro and analysis the Structure.
INTRODUCTION – The Detail of Project for the bridge structure at Ahmedabad Metro rail Given below.
Assume the unit weight of soil as 18 kN/m3
The Span of the Bridge is 10m
Width of Bridge is 22m
Height of Bridge is 20m
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 dead load
Dead load of slab =width*thickness* Unit weight
dead load for 1 slab=22*1*25
=550 kn/m2
dead load for 2slab=22*1.2*25
=660 kn/m2
dead load for 1 slab=10*0.7*25
=175 kn/m2
dead load for 1 slab=22*2*25
=1100 kn/m2
IRS live loads Metro rail given by IRC is
| 170 | |
| 170 | 2.15 |
| 170 | 2.2 |
| 170 | 12.4 |
| 170 | 2.2 |
Then Calculate Earth pressure load
Earth Pressue =Ka Yh
=0.5 (Ysoil-Ywater)*20
=0.5*(18-10)*20
=80 kN/m2
Then Calculate the wind load as per IS code 875 part III 2015
DESIGN WIND SPEED Vz =V*K1*K2*K3*K4
K1 is Probability factor
K2 is Height Factor
K3 is Topography Factor
K4 is Importance Factor
Vb is Wind Speed
According to IS Code 875 part III 2015 Appendix A page No 96 WInd Speed of city 39 m/s
All Value taken by IS Code 875 part III 2015 according to the our project
K1=1
K2=1.2
K3=1
K4=1
Vz= 39*1*1.2*1*1
= 46.8m/s
Wind Pressue= 0.6*Vz2
=0.6*46.8
=1314.144N/m2
=1.3144kN/m2
Then Calculate seismic load as per IS code 1893
Step6:- After go to the Load Cases and step by step to create the load into the model
Step8:- Then slave the file and assign run analysis
Step9:- Then Check the Deflection, displacement and all deformation on the structural element
RESULT:-
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
