Pedestrian bridge

I was assigned by Mr. Goh to conduct an analysis on 2 of the pedestrian bridges that is made of steel, located at seksyen U8, Bukit jelutong, Shah Alam. I was then informed by Mr. Goh that the plan view of the provided drawings is up to date, while the elevation view of the provided drawing is not. However, the plan view of the pedestrian bridge 1 does not match the elevation view. As a reason. It was put on hold for a moment. The coordinate of pedestrian bridge 2 was located with help of Autocad.

The next day, the model of the pedestrian bridge 2 was constructed based on the coordinate obtained. Through my disappoinment, the bridge does not appear to be straight. Help was seek from Mdm. Tan, one of the reputable draughtsman in the consultant firm. I was advised by her to model the bridge as if it is straight, instead of tilted. The model of the bridge was completed on the day.

The analysis continues, dead load assigned is 2kN/m, while live load assigned is 4kN/m. The beam section assigned for top-chord and bottom chord of the bridge is SHS 150x150x8.0. On the other hand, the middle chord made up of SHS 150x150x8.0 and CHS 76x5.0. As for the column, beam section of CHS 324x6.0 was assigned. The supports at column resist translational and rotational movement. While, supports that is located at the end span of the bridge only resists vertical load to allowed expansion and compression of the steel bridge due to influences of heat.

After consucting the analysis. It yields a maximum deflection of 14.04mm at node 25. based on the analysis, plane flexuaral buckling and lateral torsional buckling is adequate. Checks for axial stress for each member is adequate.

An overview of pedestrian bridge 2

The deflected shape of the bridge