实体矩形桥墩盖梁非线性裂缝分析

The Analysis of Entity Rectangular Pier Cap Beam Nonlinear Crack

基于Midas FEA有限元软件对实体矩形桥墩盖梁进行仿真实体建模,通过对盖梁实体空间模型的计算,得出盖梁在各施工阶段及成桥运营阶段等不同工况下应力数值结果及分布,确定盖梁结构的应力集中区域,在考虑材料非线性的基础之上,对其进行非线性裂缝分析,确定盖梁应力集中区域裂缝极限状态荷载值。

Based on Midas FEA finite element software, this paper had the simulation entity modeling on the entity rectangular pier cap beam. Through calculating the cap beam entity space model, it obtained the numerical results and distribution of cover beam stress in each stage and the operational phase of the bridge under the different working conditions, and determined the cap beam structure stress concentration area. On the basis of considering the material nonlinearity, it also analyzed its nonlinear crack to determine the crack limit state load value in the cover beam stress concentration area.