Week 5 Challenge
AIM:
Calculate the design wind loads for the bridges to be designed at Mumbai.
GIVEN DATA:
- The height of the bridge above ground level is 9 m.
- It is located in open terrain with well scattered obstructions of height less than 10m.
- The pier size is 1.5 x 1.5 m.
PROCEDURE:
1.To create a node first
2.Use translation repute method y=9
3.Add Beam node 1 to node 2
4.It is the fixed support
5.To select the beam 3 steps and 4m distance Z direction
6.To select the four beams and then 2 steps and 10m distance in X direction
7.To add beams in all X, Z directions
8.Select the node 0.5m distance in X direction
9.Select node 0.5m distance in Z direction
10.Create plate
11.Plate thickness is 0.5m
12.Select the plate 23 steps in Z direction
13.Select all plates and 39 steps in X direction 0.5m distance
14.To form the groups pier, girder, cross girder
15.pier =1.5m*1.5m, Girder =0.60m*1m, Cross girder = Taper (materials all of concrete)
CALCULATIONS:
Mumbai basic wind speed is Vb = 44m/s
Wind speed Vz = Vb*K1*K2*K3*K4
= 44*1.07*1*1*1.3
= 61.204 m/s
Wind pressure Pz = 0.6*Vz2
= 2247.54 m/s
= 2.247 Kn/m2
16.Go to the load cases create the four-wind loads = +z, -z, +x, -x
- a.+Z = 1.5m*2.247, =
b.+Z = 0.6m*2.247, = 1.3482 (Girder)
c. -Z = -1.5m*2.247, = -3.3705 (pier )
d. -Z = -0.6m*2.247, = -1.3482 (Girder )
e.+X = 1.5m*2.247, = 3.3705 (pier)
f. +X = 0.6m*2.247, = 1.3482 (Girder)
g. -X = -1.5m*2.247, = -3.3705 (pier )
h. -X = -0.6m*2.247, = -1.3482 (Girder )
RESULTS:
18.Go to run analysis and post processing mode
19.Wind load +Z deflection
20.Displacement
21.Shear y
22.Bending moment MY
23.Plate results MY Local
24.Plate result SY Local
25.Plate stresses report
