强震作用下带屈曲约束支撑的K型网壳整体结构性能分析
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摘要
以K6型网壳为研究对象,考虑网壳支承结构的弹性效应,并在支承结构中设置屈曲约束支撑(BRB),考虑在9度区强震作用下,通过不同的屈曲约束支撑布置方式对结构进行动力弹塑性分析.结果表明,在考虑整体网壳支承结构共同工作时,结构主要节点位移和杆件内力响应都有所减小;网壳上部结构设置屈曲约束支撑能够有效降低节点位移和杆件内力响应;考虑上部和下部设置屈曲约束支撑共同工作对于K6型网壳减振耗能有很好的效果.
The overall K6 reticulated shell structure's dynamic elastic-plastic analysis in 9 degrees area under earthquake was researched under different places of Buckling Restrained Braces(BRB) on the shell.The elastic effects of supporting structure and Buckling Restrained Braces were considered as two key factors.Analysis result shows that,when the supporting structure works together,the structure's response of displacement and internal force decreased markedly.After setting BRBs on upper shell,the displacement and internal force also decreased effectively,and it is good for energy consumption on K6 reticulated shell considering setting BRBs on upper and lower structures together.
The overall K6 reticulated shell structure's dynamic elastic-plastic analysis in 9 degrees area under earthquake was researched under different places of Buckling Restrained Braces(BRB) on the shell.The elastic effects of supporting structure and Buckling Restrained Braces were considered as two key factors.Analysis result shows that,when the supporting structure works together,the structure's response of displacement and internal force decreased markedly.After setting BRBs on upper shell,the displacement and internal force also decreased effectively,and it is good for energy consumption on K6 reticulated shell considering setting BRBs on upper and lower structures together.
引文
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[2]JGJ61-200,网壳结构技术规程[S].北京:中国建筑工业出版社,2003.JGJ61-200,Technical specification for latticed shells[S].Beijing:China Architecture&Building Press,2003.(inChinese)
[3]陈军明,陈应波,吴代华.单层球面网壳结构地震响应的动力时程分析[J].空间结构,1999,5(4):15-20.CHEN Junming,CHEN Yingbo,WU Daihua.Direct dy-namic analysis of single-layer reticulated spherical shell sub-jected to earthquake action[J].Spatial Structures,1999,5(4):15-20.(in Chinese)
[4]陈应波,陈军明.网壳结构与下部结构协同工作的研究[J].华中科技大学学报:自然科学版,2004,32(3):49-53.CHEN Yingbo,CHEN Junming.Study of the cooperativeeffect between reticulated shell and supporting structure[J].Journal of Huazhong Univiversity of Science andTechnology:Nature Science Edition,2004,32(3):49-53.(in Chinese)
[5]闫志刚.考虑下部结构共同作用的新型网壳减震体系性能研究[D].兰州:兰州理工大学,2008.YAN Zhigang.Research on a new type of damping shellstructure system under substructure cooperative work[D].Lanzhou:Lanzhou University of Technology,2008.(inChinese)
[6]曹正罡,范峰,沈世钊.K6型单层网壳的弹塑性稳定[J].空间结构,2005,11(3):22-26.CAO Zhenggang,FAN Feng,SHEN Shizhao.Elastic-plastic stability of K6 single layer latticed domes[J].Spa-tial Structures,2005,11(3):22-26.(in Chinese)
[7]郭小农,陈扬骥.短程线性单层球面网壳抗震分析[J].空间结构,1999,5(2):3-9.GUO Xiaonong,CHEN Yangji.Seismic response analysisof the single layer reticulated domes with geodesic grid[J].Spatial Structures,1999,5(2):3-9.(in Chinese)
[8]王秀丽,陈祥勇,殷占忠.约束屈曲支撑对K6型球面网壳减震效果的分析[J].甘肃科学学报,2007,19(1):122-126.WANG Xiuli,CHEN Xiangyong,YIN Zhanzhong.Ananalysis of seismic vibration reduction of K6 spherical lat-ticed shell by means of buckling-restrained braces[J].Jour-nal of Gansu Sciences,2007,19(1):122-126.(in Chi-nese)
[9]王秀丽,苏成江.约束屈曲支撑受力性能及高阶模态分析[J].兰州理工大学学报,2007,33(5):105-108.WANG Xiuli,SU Chengjiang.Analysis of mechanical be-havior and high-order mode of buckling-restrained bracing[J].Journal of Lanzhou University of Technology,2007,33(5):105-108.(in Chinese)
[10]王秀丽,胡静.约束屈曲支撑在落地球形网壳中的减震效果分析[J].兰州理工大学学报,2008,34(4):118-122.WANG Xiuli,HU Jing.Analysis of anti-seismic effect offloor lattice shell with buckling-restrained brace[J].Jour-nal of Lanzhou University of Technology,2008,34(4):118-122.(in Chinese)
[11]王秀丽,王磊.新型椭球网壳减震体系性能分析[J].工程抗震与加固改造,2007,29(4):31-36.WANG Xiuli,WANG Lei.Analysis of vibration reducingperformance on innovation system of ellipse lattice shell[J].Earthquake Resistant Engineering and Retrofitting,2007,29(4):31-36.(in Chinese)
[12]陈祥勇.约束屈曲支撑在单层网壳结构中的减震效果分析[D].兰州:兰州理工大学,2006.CHEN Xiangyong.Dynamic analysis on large span reticu-lated dome with buckling-restrained braces[D].Lanzhou:Lanzhou University of Technology,2006.(in Chinese)
[13]王秀丽,高森,潘霞.约束屈曲支撑(BRBs)在单层柱壳振动控制中的应用研究[J].建筑科学,2007,23(7):34-38.WANG Xiuli,GAO Sen,PAN Xia.Research on vibra-tion control of single layer cylindrical lattice shells withBRBs[J].Building Science,2007,23(7):34-38.(inChinese)
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