Your second question brings up a very interesting point. Need to add LF1 for the footing design, instead of LF2 as defined in the load If strictly following the code, this max. MX standpoint, 1 lane loaded creates max. And I used the load combination as 2tracks (2įrom max. (1 lane moving load + LF1), 2tracks (2 lanes moving load + LF2).īelow shows the result at the bottom of the footing from 2ĭefinition, I defined the max. Values 0, LF1, and LF2 differ by quite a bit andįrom modeling standpoint for the best compliant with theĬode, in the load combination I would define 0track (no moving load, no LF), 1track Two lanes loaded, there will be a constant value LF2. There’s one lane loaded, there will be a constant value LF1 if there’re Per design criteria, we have to consider train longitudinalĪcceleration & deceleration load (call it LF) along with the live I’d like to find the stress at the footing calculatingįrom the concurrent vertical reaction FZ, longitudinal moment MY, and transverse The abutment consists of backwall, stem, and footing at the bottom. Spans are supported by the abutment as shown. Let me explain what I need to do first and see if you have better suggestions.įirst of all, the model consists of 2 spans, and these 2
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