某立交主桥加固前非线性分析

以某立交桥为依托工程,对连续梁牛腿进行开裂及加固研究,通过模型试验的方法,结合空间有限元仿真计算分析来较为精确的得到连续梁牛腿开裂及加固前的受力情况,结果表明：结构在车载作用下,顺桥向,下牛腿结构上最大拉应力为3.25 MPa,出现在交接位置上,上牛腿结构上最大拉应力为2.17 MPa,出现在交接位置上。

The nonlinear analysis of an interchange main bridge before reinforcing

With a overpass as depending engineering,the continuous beam corbel was cracked and reinforced research,with model testing method,combined with spatial finite element simulation calculation analysis,the stress situation of continuous beam corbel before crack and reinforcement was obtained accurately.It indicated that the structure under vehicle loading effect along bridge direction,the maximum tensile stress of the down corbel was 3.25 MPa,which was in conjoining site,while up corbel structure was 2.17 MPa,and also in conjoining site.