铁路高墩长联大跨曲线连续刚构桥计算分析

发布时间：2018-01-09 20:14

本文关键词：铁路高墩长联大跨曲线连续刚构桥计算分析　出处：《西南交通大学》2015年硕士论文　论文类型：学位论文

【摘要】：论文回顾了曲线连续刚构桥发展概况,分析了预应力混凝土连续刚构桥具有行车平顺、结构简单、受力性能好、施工方便等方面优点,总结了曲线连续刚构桥结构特点、受力特点。论文以贵广铁路圣泉1号特大桥为工程背景,计算分析铁路高墩大跨长联曲线连续刚构桥施工过程和成桥运营阶段的静动力效应,详细计算分析了0号块局部复杂应力。首先,论文采用大型有限元分析软件MIDAS/CIVIL 2011建立连续刚构桥全桥基于梁单元的有限元模型,计算分析施工阶段和成桥运营阶段结构的内力与变形。其次,模拟桩-土作用,对成桥状态进行自振特性分析,并分别采用反应谱方法和时程方法计算分析该桥的地震响应。最后,采用ANSYS有限元软件建立该桥基于实体和杆单元的0号块组合单元详细模型,计算分析0号块在成桥运营阶段的复杂应力。
[Abstract]:This paper reviews the development of curved continuous rigid frame bridge, and analyzes the advantages of prestressed concrete continuous rigid frame bridge, such as smooth running, simple structure, good mechanical performance, convenient construction and so on. The structural and mechanical characteristics of curved continuous rigid frame bridge are summarized. The paper takes Shengquan No. 1 Bridge of Gui-Guangzhou Railway as the engineering background. The static and dynamic effects of the continuous rigid frame bridge with long span and high piers are calculated and analyzed, and the local complex stress of block 0 is calculated and analyzed in detail. In this paper, the finite element model of the whole bridge of continuous rigid frame bridge based on beam element is established by using the large-scale finite element analysis software MIDAS/CIVIL 2011. The internal force and deformation of the structure in the construction stage and the operation stage of the bridge are calculated and analyzed. Secondly, the self-vibration characteristics of the bridge state are analyzed by simulating the pile-soil interaction. The response spectrum method and time history method are used to calculate and analyze the seismic response of the bridge. Finally, the detailed model of block 0 combination element based on solid and bar element is established by ANSYS finite element software. The complex stress of block 0 in the operation stage of the bridge is calculated and analyzed.
【学位授予单位】：西南交通大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U448.23

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