弯道上的桥台侧墙开裂原因分析

Analysis of abutment sidewall failure mechanism for solid arch bridge on curve

根据实桥状况,对桥台侧墙开裂的原因进行分析.考虑了弯道行车产生离心力作用,同时对墙后主动土压力计算公式进行比选,通过土压力和离心力共同作用的计算模式,运用有限元进行计算,找出了侧墙开裂的原因.

According to the condition of a bridge, a finite element was established to explore the potential failure mechanism of abutment sidewall cracking and sliping. Soil pressure was combined with live load and potential centrifugal force that might be generated due to small radius curve at the beginning of the bridge, to simulate the most critical load condition, The results indicated excessive tension stress due to bending might had caused initial cracking and shiping in service.