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首页> 外文会议>International Symposium on Structural Engineering for Young Experts; 20060818-21; Fuzhou amp; Xiamen(CN) >Dynamic Analysis of the Long-Span Prestressed Steel Rool with Cable-Stayed Grids
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Dynamic Analysis of the Long-Span Prestressed Steel Rool with Cable-Stayed Grids

机译：斜拉网大跨度预应力钢卷的动力分析

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摘要

The long-span prestressed steel roof with cable-stayed grids is a kind of new space assembly structure. Extensive research has been performed on its static behaviour. However, little work has been reported on its dynamic responses. In this paper,the Finite Element Method has been used to conduct a full range dynamic analysis on the long-span prestressed steel roof with cable-stayed grids from a practical project-Guangdong Modern International Exhibition Center. Firstly the free vibration characteristics of the grids were obtained,and the dynamic responses of the components in the structure under frequently occurred earthquake and seldom occurred earthquake were presented by time history method. Secondly the seismic coefficients were introduced to determine the earthquake actions. The method herein is simple and safe for practical use, and also takes the damping coefficients and the influence of prestress in cable-stayed ties into consideration. The distributions of horizontal and vertical earthquake action coefficients were given,and then those coefficients have been determined,which contributes greatly to the design work.
机译：带有斜拉网的大跨度预应力钢屋顶是一种新型的空间装配结构。已经对其静态行为进行了广泛的研究。但是，关于其动态响应的报道很少。本文采用有限元方法对某实用工程广东现代国际展览中心的大跨度预应力钢索斜拉屋顶进行了全范围动力分析。首先获得了网格的自由振动特性，并通过时程法给出了结构构件在频繁发生地震和很少发生地震下的动力响应。其次，引入地震系数来确定地震作用。本文中的方法简单且实用安全，并且还考虑了阻尼系数和斜拉索中预应力的影响。给出了水平和垂直地震作用系数的分布，然后确定了这些系数，这对设计工作有很大的帮助。

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