独塔斜拉—刚构组合体系桥结构行为研究
发布时间：2018-10-07 20:57
【摘要】：随着社会经济和交通事业的迅猛发展,出现了各种各样的桥型,独塔斜拉-刚构组合体系桥就是其中之一。独塔斜拉桥与刚构的协调体系以其优美的造型,结构的新颖以及出色的跨越能力,越来越多地作为标志性建筑出现在人们的视野当中。在独塔斜拉-刚构组合体系桥的结构行为跟传统的独塔斜拉桥和刚构桥有什么异同点呢?目前对该类桥型的结构行为及受力特性虽然有所研究,但是还有很多问题有待解决。本文研究内容如下：1、针对炳草岗金沙江大桥工程实例,采用MIDAS/CIVIL有限元分析软件建立空间模型进行分析研究结构内力及变形特点,并结合独塔斜拉桥和刚构桥的结构行为及受力特点,对比得出独塔斜拉-刚构组合体系桥的优缺点。2、通过控制变量法分别改变独塔斜拉-刚构组合体系桥的T构的刚度、辅助墩的设置与否以及位置情况、主跨无索区长度和结构整体对称性等几个参数来研究各个参数对结构的内力和位移的影响情况。3、总结影响传统斜拉桥和刚构桥的施工工艺主要参数偏差,通过控制变量法将这些参数应用到斜拉-刚构桥中,来对斜拉-刚构桥施工过程中的工艺参数偏差进行敏感性分析。4、结合对炳草岗金沙江大桥所做的荷载试验结果来检验不对称独塔斜拉-刚构桥在长期运营状态下的结构响应状态,并对前面所做的结构行为研究进行验证,同时为以后此类桥的荷载试验提供建议。
[Abstract]:With the rapid development of social economy and transportation, there are many kinds of bridges, one of which is single tower cable-stayed rigid frame composite bridge. The coordination system of single tower cable-stayed bridge and rigid frame is more and more used as a landmark building for its beautiful shape, novel structure and excellent leapfrogging ability. What is the difference between the structure behavior of single tower cable-stayed and rigid frame composite bridge and traditional single-tower cable-stayed bridge and rigid frame bridge? Although the structural behavior and mechanical characteristics of this type of bridge have been studied, there are still many problems to be solved. The research contents of this paper are as follows: 1. In view of the engineering example of Bingcaogang Jinsha River Bridge, the spatial model is established by using MIDAS/CIVIL finite element analysis software to analyze and study the characteristics of internal force and deformation of the structure. Combined with the structural behavior and stress characteristics of single tower cable-stayed bridge and rigid frame bridge, the merits and demerits of single-tower cable-stayed rigid-frame composite bridge are obtained. The stiffness of T-frame of single-tower cable-stayed rigid frame composite bridge is changed by controlling variable method, respectively. Whether the auxiliary piers are installed or not, and the position of the auxiliary piers, Several parameters, such as the length of the cable free zone of the main span and the overall symmetry of the structure, are used to study the influence of each parameter on the internal force and displacement of the structure. The main parameters deviation of the construction process affecting the traditional cable-stayed bridge and rigid frame bridge is summarized. These parameters are applied to the cable-stayed rigid frame bridge by the control variable method. The sensitivity analysis of the process parameter deviation during the construction of the cable-stayed rigid frame bridge was carried out. 4. Combined with the load test results of Bingcaogang Jinsha River Bridge, the asymmetric single-tower cable-stayed rigid frame bridge was tested under the long-term operation condition. The structural response state of, The structural behavior of the bridge is verified and some suggestions are provided for the load test of the bridge in the future.
【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】：U441
本文编号：2255646
[Abstract]:With the rapid development of social economy and transportation, there are many kinds of bridges, one of which is single tower cable-stayed rigid frame composite bridge. The coordination system of single tower cable-stayed bridge and rigid frame is more and more used as a landmark building for its beautiful shape, novel structure and excellent leapfrogging ability. What is the difference between the structure behavior of single tower cable-stayed and rigid frame composite bridge and traditional single-tower cable-stayed bridge and rigid frame bridge? Although the structural behavior and mechanical characteristics of this type of bridge have been studied, there are still many problems to be solved. The research contents of this paper are as follows: 1. In view of the engineering example of Bingcaogang Jinsha River Bridge, the spatial model is established by using MIDAS/CIVIL finite element analysis software to analyze and study the characteristics of internal force and deformation of the structure. Combined with the structural behavior and stress characteristics of single tower cable-stayed bridge and rigid frame bridge, the merits and demerits of single-tower cable-stayed rigid-frame composite bridge are obtained. The stiffness of T-frame of single-tower cable-stayed rigid frame composite bridge is changed by controlling variable method, respectively. Whether the auxiliary piers are installed or not, and the position of the auxiliary piers, Several parameters, such as the length of the cable free zone of the main span and the overall symmetry of the structure, are used to study the influence of each parameter on the internal force and displacement of the structure. The main parameters deviation of the construction process affecting the traditional cable-stayed bridge and rigid frame bridge is summarized. These parameters are applied to the cable-stayed rigid frame bridge by the control variable method. The sensitivity analysis of the process parameter deviation during the construction of the cable-stayed rigid frame bridge was carried out. 4. Combined with the load test results of Bingcaogang Jinsha River Bridge, the asymmetric single-tower cable-stayed rigid frame bridge was tested under the long-term operation condition. The structural response state of, The structural behavior of the bridge is verified and some suggestions are provided for the load test of the bridge in the future.
【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】：U441
【引证文献】
相关期刊论文 前1条
1 赵晓晋;贺拴海;白鹭涛;朱钊;;双塔斜拉-连续梁组合体系的力学行为分析[J];深圳大学学报(理工版);2016年05期
，本文编号：2255646
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