A Load Modeling and Fatigue Evaluation Method for Steel Bridge Fatigue Evaluation
A technology for fatigue and steel bridges, applied in instrumentation, geometric CAD, design optimization/simulation, etc., can solve problems such as difficult to reflect the actual situation, complex loads of bridges, complex applications, etc., and achieve improved use value, better fatigue evaluation, and evaluation results accurate effect
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[0063] The present invention will be described in further detail below through specific embodiments and in conjunction with the accompanying drawings.
[0064] A steel bridge fatigue evaluation load modeling and fatigue evaluation method described in an embodiment of the present invention, the method realizes train load modeling based on the measured data of passing vehicles. A steel truss bridge with a span of 75m is taken as an example to illustrate the load modeling and fatigue assessment method for steel bridge fatigue assessment of the present invention.
[0065] Such as figure 1 shown, including:
[0066] Step 1, establish the train load model:
[0067] The load response of the train and the wheel-rail force are monitored by the sensors arranged on the steel bridge, and the load model of the train passing on the steel bridge is expressed as: F=f(c,l,n,v);
[0068] In the formula, the parameter c represents the type of train, the parameter l represents the type of loco...
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