| 悬挑网架在台风作用下的破坏机理研究 |
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| 引用本文： | 曲晓宁,罗尧治,郑君华.悬挑网架在台风作用下的破坏机理研究[J].科技通报,2009,25(1). |
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| 作者姓名： | 曲晓宁 罗尧治 郑君华 |
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| 作者单位： | 浙江大学,空间结构研究中心,杭州,310058 |
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| 基金项目： | 国家高技术研究发展计划(863计划)，国家自然科学基金 |
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| 摘 要： | 悬挑网架结构被广泛应用于体育馆等大型公共建筑中,随着这种结构向大跨度和轻质化方向的发展,风荷载逐渐成为其主要控制荷载,尤其我国东南沿海地区是台风多发区.本文首先介绍了台风年最大风速的模拟方法,考虑到台风风场流动不稳定性,对其进行了修正:然后结合悬挑网架在台风作用下破坏的工程实例,进行了结构受力的几何和材料的双重非线性分析,研究了悬挑网架结构在强台风作用下的破坏机理.
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| 关 键 词： | 悬挑网架 破坏机理 极值风速 几何非线性 |
Failure Principium of Cantilever Space Truss Subjected to Typhoon Action |
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| QU Xiaoning,LUO Yaozhi,ZHENG Junhua.Failure Principium of Cantilever Space Truss Subjected to Typhoon Action[J].Bulletin of Science and Technology,2009,25(1). |
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| Authors: | QU Xiaoning LUO Yaozhi ZHENG Junhua |
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| Institution: | Space Structure Research Centre;Zhejiang University;Hangzhou 310027;China |
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| Abstract: | Cantilever space truss has been widely applied to public buildings,such as the roofs of sports stadiums.As these structures develop for larger span and lighter weight,the wind loads become a crucial one among design loads,espe-cially in southeast coastal region of China,where typhoon happened continually.Firstly,a simulation method of extreme typhoon velocity was introduced and then the simulation was modified considering the instability of wind fields of ty-phoon.Farther,an actual building destroyed by typ... |
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| Keywords: | cantilever space truss failure mechanism extreme wind velocity geometrical nonlinearity |
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