人字形桥梁的动力特性分析

Analysis of Finite Element Modelling of Y-shape Bridge

城市高架桥工程和立交枢纽工程是解决现代城市交通问题的有效途径,人字形桥梁是城市高架桥工程和立交枢纽工程中常用的结构形式,有效地解决了桥面交通与地面交通矛盾的问题。利用有限元软件ANSYS对人字形桥梁结构进行动力特性分析,着重分析了前四阶模态。结果表明,三维框架简化计算模型具有较好的可靠性,可适用于人字形桥梁的设计计算,从而为同类桥梁提供借鉴。

Urban viaduct project and interchange hub project are the effective way to solve the problems of modern urban traffic. Y- shape bridge is the common structure form in the urban viaduct project and interchange hub project, it effectively solves the contradiction problems of the bridge traffic and ground traffic. The finite element software ANSYS is used to carry out the dynamic characteristics analysis of the Y-shape bridge structure, the first four order modals are mainly analyzed. The results show that the three-dimensional framework simplified calculation model has good reliability, it can be applied to the design and calculation of Y-shape bridge to provide reference for similar bridges.