| 汶川地震中变电站开关设备破坏机理 |
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| 引用本文： | 谢强,王亚非.汶川地震中变电站开关设备破坏机理[J].沈阳建筑工程学院学报(自然科学版),2009,25(6):1050-1057. |
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| 作者姓名： | 谢强 王亚非 |
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| 作者单位： | 谢强(同济大学建筑工程系,上海,200092;同济大学土木工程防灾国家重点实验室,上海,200092);王亚非(同济大学建筑工程系,上海,200092) |
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| 基金项目： | 教育部霍英东教育基金会优选资助课题，国家电网公司科技项目 |
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| 摘 要： | 目的分析汶川大地震中大量遭受破坏的变电站电气设备的地震易损性和震害机理．方法通过建立软母线连接的变电站开关设备耦联体系的有限元分析模型，采用非线性的索单元模拟软母线的作用．在实际记录的汶川地震波输入下，对耦联体系有限元模型进行了地震时程分析，对比了结构地震响应计算结果．结果隔离开关有母线连接瓷柱和无母线连接瓷柱的响应差别很大，母线对设备的响应影响是比较大的，它是导致设备发生破坏的重要原因．由于母线的存在，母线连接设备体系的结构响应呈现非线性的特点．结论变电站电气设备是典型的地震易损结构，在设备的抗震分析中需要考虑母线的耦联作用．
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| 关 键 词： | 变电站设备 汶川地震 破坏机理 有限元分析 |
Seismic Failure Analysis on Substation Switch Equipments in Wenchuan Earthquake |
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| Affiliation: | XIE Qiang, WANG Yafei( 1. Department of Building Engineering, Tongji University, Shanghai China, 200092 ; 2. State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai China ,200092 ) |
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| Abstract: | Many substation equipments were damaged during Wenchuan Earthquake, May 12th, 2008. In order to analyze seismic vulnerability and failure mechanism, finite element model of substation switch equipments interconnected by flexible bus was established, in which the cable element was used to simulate the flexible bus. Under the input of recorded Wenchuan Earthquake ground motions, time history analysis was made and the seismic responses were compared using the FEM model. The results show that the structural responses of the bus connected equipments are different from that of the independent equipments, which indicates that the influence of flexible bus on equipments cannot be ignored. Tension transmission through the flexible bus is one of the main reasons to cause seismic failure of some equipment and it should be considered in the seismic design of substation equipments interconnected by flexible bus. |
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| Keywords: | substation equipments Wenchuan Earthquake failure mechanism finite element analysis |
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