Week 6 Challenge

Given Data:

Truss type of bridge is given, Where given section are ISA 50 X 50 X6, ISA 75 X 75 X 6, ISMC 100, ISMC 200, ISMB 250.

1. Length of Bridge = 24m

2. Width of Bridge = 3m

3. Thickness of Deck Slab = 300mm (Assumed)

4. Heigth of Pier = 3m (Assumed)

Two type of pipes are proposed on the bridge with one being 700 dia NB DI pipe and the other one being 200 dia NB DI pipe. As maximum DI Pipe have 600mm dia as per CPHEEO Manual having weight of 217.19 kg/m (2.12 kN/m), And for 200mm dia as per CPHEEO Manual having weight of 45.28 kg/m (0.45 kN/m).

Staad Pro Design:

1. First I created Staad Model as per given data. In which height of pier is 3m and 1m dia of pier, Then I created steel truss bridge where span of bridge is 24m and width of bridge is 3m and the members property as per the given data. Bridge deck slab having depth of 300mm. Providing fixed support to the piers.

Step : 2 After that I go to the load case details where Firsrtly I defined the load case details for both 700mm dia NB DI Pipe and 200mm dia NB DI Pipe. In 700mm DI Pipe I goes to the member load and provide -2.12kN/m load and assign it to the member where 700mm dia pipe is acting. After that I again goes to the member load and provide -0.45kN/m load and assign it to the member where 200mm dia pipe is acting. After that I defined another load case details of selfweight of structure and assigned it to the whole structure.

Step : 3

After that I gave the analysis command and run the structure to the Postprocessing menu.

Where i firstely select those Beams where 700mm dia pipe and 200mm dia pipe are acting and go to the reports, section forces and checked for the Maximum Bending Moment in MZ for load cases. Where I got maximun bending moment in MZ 0.318kN-m.

After that i again select the Beams and go to the reports, section forces and checked for the Maximum Bending Moment in MY. Where I got maximun bending moment in MY 0.003kN-m

After that i again select the Beams and go to the reports, section forces and checked for the Maximum Shear Force in FZ. Where I got maximun Shear Force in FZ 0.011kN.

After that i again select the Beams and go to the reports, section forces and checked for the Maximum Shear Force in FY. Where I got maximun Shear Force in FY 1.077kN.

After that i select the deck slab plates and go to the reports, plate stresses and checked for the Maximum Bending Moment in MX. Where I got maximun bending moment in MX 9.140kN-m

After that i select the deck slab plates and go to the reports, plate stresses and checked for the Maximum Bending Moment in MY. Where I got maximun bending moment in MY 113.194kN-m

After that i select the deck slab plates and go to the reports, plate stresses and checked for the Maximum Shear Force in SQX. Where I got maximun Shear Force in SQX 232.044kN-m

After that i select the deck slab plates and go to the reports, plate stresses and checked for the Maximum Shear Force in SQY. Where I got maximun Shear Force in SQY 495.228kN-m