| 基于固有频率变化的框支承玻璃幕墙安全评估 |
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| 引用本文： | 刘小根,包亦望. 基于固有频率变化的框支承玻璃幕墙安全评估[J]. 沈阳工业大学学报, 2011, 33(5): 595-600 |
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| 作者姓名： | 刘小根 包亦望 |
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| 作者单位： | 中国建筑材料科学研究总院绿色建材国家重点实验室; |
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| 基金项目： | 国家“973”计划资助项目(2009CB623103); 北京市自然科学基金资助项目(2102047); 国际科技合作专项资助项目(2010DFB13460); 北京市科技计划资助项目(D08050303450803) |
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| 摘 要： | 针对幕墙玻璃易突发性脱落并导致城市灾难事故的问题，提出一种通过测试幕墙玻璃的固有频率来识别框支承玻璃幕墙支承结构松动损伤程度的方法.研究了四边夹支玻璃幕墙在其支承结构体系出现松动损伤后幕墙玻璃固有频率的变化规律.试验结果表明，幕墙玻璃的固有频率随其边界支承松动而不断衰降，且分布在玻璃边界四边固支与四边简支所对应的频率区间内.结合矩形薄板边界约束与其动态参数关系，建立起一套以幕墙玻璃固有频率变化来评价框支承玻璃幕墙支承结构松动损伤及玻璃脱落风险的标准，形成了一种可以现场检测既有框支承玻璃幕墙安全性能的简便方法.
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| 关 键 词： | 玻璃幕墙 脱落 可靠性 评估标准 固有频率 安全频率区间 安全等级 现场检测 |
Safety evaluation for frame supported glass curtain wall based on natural frequency change |
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| LIU Xiao-gen,BAO Yi-wang. Safety evaluation for frame supported glass curtain wall based on natural frequency change[J]. Journal of Shenyang University of Technology, 2011, 33(5): 595-600 |
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| Authors: | LIU Xiao-gen BAO Yi-wang |
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| Affiliation: | LIU Xiao-gen,BAO Yi-wang(State Key Laboratory of Green Building Materials,China Building Material Academy,Beijing 100086,China) |
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| Abstract: | Aiming at the problems concerning city disasters and accidents caused by the sudden falling of curtain wall glass,a method that could identify the looseness damage degree of frame supported glass curtain wall supporting structure through testing the natural frequency of curtain wall glass was proposed.The change rule in the natural frequency of curtain wall glass was studied when the supporting structure system of the four-edge clamped glass curtain wall occurred the looseness damage.The results indicate th... |
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| Keywords: | glass curtain wall falling reliability evaluation criterion natural frequency safety frequency interval safety level field detection |
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