江苏地区220 kV标准变电站抗震性能评估
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摘要
220 kV变电站建筑在电网系统中地位非常重要,其承载能力安全性,尤其是其抗震能力,对电网系统稳定有决定性影响。为评估变电站结构抗震承载能力,明确其倒塌机理,从而为新建变电站结构抗震设计提供技术支撑。以国家电网江苏公司220 kV标准变电站结构为例,选取3条地震波,采用弹塑性时程法,分析结构在不同地震波不同输入方式下的响应。研究结果发现:三向地震波输入下变电站结构地震响应很大;结构的损伤、失效主要发生于结构薄弱部位;现有220 kV变电站结构的抗震承载力不高,鉴于其重要程度,其安全度应增强。
The constructions of 220 kV substation play an important role in the power grid system,its bearing capacity security,especially its seismic capacity,has a decisive influence on the stability of the power grid system. In order to evaluate the seismic bearing capacity of the substation structure and clarify its collapse mechanism,technical support for the seismic design of the new substation structure was provided. Taking the 220 kV standard substation structure of Jiangsu Power Grid Corporation of China as an example,this paper selected 3 seismic waves and adopted elastic-plastic time-history analysis method to analyze the response of the structure under different input modes of different seismic waves. The results showed that the seismic response of the substation structure was very large under three directional seismic waves. Structural damage or failure occurred mainly in the weak parts of the structure. The seismic capacity of existing 220 kV substation structure is not enough,and its safety should be enhanced in view of its importance.
The constructions of 220 kV substation play an important role in the power grid system,its bearing capacity security,especially its seismic capacity,has a decisive influence on the stability of the power grid system. In order to evaluate the seismic bearing capacity of the substation structure and clarify its collapse mechanism,technical support for the seismic design of the new substation structure was provided. Taking the 220 kV standard substation structure of Jiangsu Power Grid Corporation of China as an example,this paper selected 3 seismic waves and adopted elastic-plastic time-history analysis method to analyze the response of the structure under different input modes of different seismic waves. The results showed that the seismic response of the substation structure was very large under three directional seismic waves. Structural damage or failure occurred mainly in the weak parts of the structure. The seismic capacity of existing 220 kV substation structure is not enough,and its safety should be enhanced in view of its importance.
引文
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[8] DL/T_5218-2005,220~500kV变电所设计技术规程. DL/T_5218-2005,220~500kVSubstation Design Technical Specifications.(in Chinese)
[9] GB50011-2010,建筑抗震设计规范[S].GB50011-2010,Seismic Design Code For Buildings[S].(in Chinese)
[10] GB50223-2008,建筑工程抗震设防分类标准[S].GB50223-2008,Seismic Fortification Classification Standards of Construction[S].(in Chinese)
[2]郭婷婷,于贵华,徐锡伟.汶川地震灾害特征与建筑物震害原因讨论[J].工程抗震与加固改造,2010,32(4):125-133.GUO Tingting,YU Guihua,XU Xiwei. Characteristics of earthquake disasters in Wenchuan and discussion on the causes of building damage[J].Earthquake Resistant Engineering and Retrofitting,2010,32(4):125-133.(in Chinese)
[3]文波,候聪霞,牛荻涛,等.多维地震动作用下电力建筑物的地震反应分析[J].建筑结构,2009,39(3):54-56.WEN Bo,HOU Congxia,NIU Ditao,et al. Seismic response analysis of electric buildings under multidimensional ground motion[J]. Journal of Building Structure,2009,39(3):54-56.(in Chinese)
[4]文波,牛荻涛.大型变电站主厂房地震易损性研究[J].土木工程学报,2013,46(2):19-23.WEN Bo,NIU Ditao. Earthquake vulnerability analysis of main powerhouse in large substation[J]. China Civil Engineering Journal,2013,46(2):19-23.(in Chinese)
[5]刘义娟.变电站建筑结构抗震设计中的问题分析[J].建材与装饰,2015,52-53.LIU Yijuan. Seismic design analysis of substation building structure[J]. Construction Materials and Decoration,2015,52-53.(in Chinese)
[6]文波,牛荻涛,赵鹏.变电站抗震性能研究综述[J].工程抗震与加固改造,2007,29(6):73-77.WEN Bo,NIU Ditao,ZHAO Peng. Study on seismic performance of substation[J]. Earthquake Resistant Engineering and Retrofitting,2007,29(6):73-77.(in Chinese)
[7]张美晶,刘如山.变电站地震破坏的连锁危害初探[J].世界地震工程,2013,29(3):28-35.ZHANG Meijing,LIU Rushan. Preliminary study on chain hazard of substation earthquake damage[J]. World Earthquake Engineering,2013,29(3):28-35.(in Chinese)
[8] DL/T_5218-2005,220~500kV变电所设计技术规程. DL/T_5218-2005,220~500kVSubstation Design Technical Specifications.(in Chinese)
[9] GB50011-2010,建筑抗震设计规范[S].GB50011-2010,Seismic Design Code For Buildings[S].(in Chinese)
[10] GB50223-2008,建筑工程抗震设防分类标准[S].GB50223-2008,Seismic Fortification Classification Standards of Construction[S].(in Chinese)