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对某钢桁梁桥进行了空间板壳单元的有限元仿真分析,研究了其纵梁裂缝形成原因,并据此设定加固方案。分析了在开裂截面粘贴钢板进行加固后的杆件应力分布情况,得到的结论对既有钢桁梁加固维修具有一定的借鉴作用。
The finite element simulation analysis of the space plate element of a steel truss girder bridge was carried out. The reason of the formation of the longitudinal beam crack was studied and the reinforcement scheme was set accordingly. The stress distribution of the bar after the steel plate is cracked is analyzed. The conclusion is helpful to the reinforcement and repair of the existing steel truss girder.