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该文以天津港南疆复线公路桥为背景,首先,采用大型非线性有限元软件ABAQUS,对在距离桥梁固定位置处不同堆土高度对桥梁墩柱的沉降和水平变位以及桥梁基础地基塑性区的发展情况进行了有限元分析,其次,应用分层总和法计算了不同高度堆载作用下的地基沉降量;通过数值分析结果、解析解的计算结果和现场实测结果的相互对比,三者之间吻合较好。最后,对不同堆载高度作用下,桥梁地基中的附加应力的发展情况进行了有限元分析。上述计算结果可以为相关项目的设计和运营提供一定的依据和参考。
In this paper, the background of Nanjiang double-track highway bridge in Tianjin Port is taken as a background. Firstly, by using the large-scale nonlinear finite element software ABAQUS, the settlement and horizontal displacement of bridge pier at different fixed heights of bridge and the plasticity of bridge foundation Then, by using the method of stratified summation, the settlement of foundation under different heights is calculated. Through the numerical analysis, the results of the analytical solution and the comparison of the actual measured results show that the three factors Good agreement between. Finally, the finite element analysis of the development of additional stress in the bridge foundation under different loading heights is carried out. The above calculation results can provide some basis and references for the design and operation of related projects.