单箱多室宽幅高架桥梁端底板应力研究

Study on the Stress of End-Slab of Single-Box Multi-Cell Viaduct with Wide Width

结合某市政高架桥,对单箱多室宽幅高架桥梁端底板应力进行研究。采用桥梁博士和ANSYS有限元软件建立有限元模型,进行传统单梁模型计算分析,并针对实际工程模型在4种工况下的应力进行详细分析,根据分析结果提出相应的改进措施,如调整横梁宽度、改变腹板钢束弯起角度及增减底板钢束。

Combined with a municipal viaduct,the end floor stress of single-box multi-chamber wide-width viaduct is studied.The finite element model was established by using Dr.Bridge and ANSYS finite element software,and the traditional single beam model was calculated and analyzed,and the stress of the actual engineering model was analyzed in detail under four working conditions.According to the analysis results,the corresponding improvement measures were proposed,such as adjusting the beam width,changing the bending angle of the web steel bundle,increasing or decreasing the bottom steel bundle.