Week 3 Challenge

solution-:

Given-:

span L= 25m

width of deck slab= 26m

length of pier is = 10m

the various IRC loading are as follows-:

1.metro rail loading

2.broasd gauge loading

3. electric train

4. gauge A loading and gauge B loading

let us considered live load type Metro rail loading arrangements as follows

calculation REACTION @ SUPPORT AND BENDING MOMENT

∑Fy = 0
Ra+Rb=170+170+170+170
Ra+Rb=680

∑Ma = 0
(170 x 2.1) +(170 x 4.3) + (170 x 16.7) + (170 x 18.9) = 25Rb
7140 = 25Rb
Rb = 285.6 kN
Ra = 394.4 kN

as simply supported Bending moment @ support is zero i.e
Ma = 0
Mb = 0
& The Bending Moment as Midspan is= (170 x 4.2) + (170 x 6.4) - (394.4 x 12.5) = - 3128 kNm

The Maximum Bending Moment Due to Live Loading is - 3128 kNm

analysis of girder in STADD PRO

step1: create geometry

span is 25m and width is 26m

Add Girder @ spacing of 3.25m

fixed support and specification provided as follows

pier-1.2m, deck slab thickness-2.25m, Igirder & cross girder-: 1*1m

Loading case is defined as follows mentioned by IRS

generation of load case with adding of span/increament

let increamental will be 20

after generation of load case Run the analysis part postprocessing for the result

the result after postprocessing are as follows

Fx displacement

Fy displacement

My & Mz moment with values