某体育馆钢管拱屋面地震作用响应分析

发布时间：2018-04-28 13:21

本文选题：钢管拱 + 单维地震作用　；参考：《西安建筑科技大学》2013年硕士论文

【摘要】：地震时的地面运动是复杂的多维运动，，地震动在本质上是空间变化的，但很多时候人们对结构进行地震评估采用的却是单维的方法。本文基于上述研究背景，运用时程分析法，对大跨度钢管拱结构的单维和多维地震反应分析问题进行研究，并取得了以下研究成果：（1）建立钢管拱的结构模型，并对模型进行了动力特性分析。（2）对比同一地震荷载在各个单维方向上施加时引起的结构响应的异同，总结单维地震作用下结构响应的规律。（3）对模型分别进行多维地震作用分析，总结多维地震作用下结构响应的规律。（4）比较单维和多维地震作用下结构的响应，得到相关结论。研究结果表明，文中利用MIDAS/GEN所建立的某钢管拱屋面简化计算模型与实际工程结果符合较好，并且计算简单，便于应用。较为准确的获得了该结构频率、变形、内力分布等规律。论文研究结果能够为后续类似工程提供必要的参考。
[Abstract]:The ground motion of earthquake is a complex multidimensional motion, and the ground motion is spatially variable in essence. However, in many cases, the seismic assessment of structures is carried out by one-dimensional method. In this paper, based on the above research background, the single and multidimensional seismic response analysis of long-span steel pipe arch structures is studied by using time-history analysis method, and the following research results are obtained: 1) the structural model of steel pipe arch is established, and the dynamic characteristics of the model are analyzed. (2) comparing the similarities and differences of the structural responses caused by the same seismic loads applied in each direction, and summing up the regularity of the structural responses under the single dimensional earthquake action. 3) the multi-dimensional seismic action analysis of the model is carried out, and the law of structural response under multi-dimensional earthquake action is summarized. The response of the structure under single and multidimensional earthquakes is compared and the relevant conclusions are obtained. The results show that the simplified calculation model of a steel pipe arch roof based on MIDAS/GEN is in good agreement with the actual engineering results, and the calculation is simple and convenient for application. The frequency, deformation and internal force distribution of the structure are obtained accurately. The results of this paper can provide the necessary reference for the following similar projects.
【学位授予单位】：西安建筑科技大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU392.3;TU311.3

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