多遇地震下空间结构的扭转效应分析
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摘要
以混凝土框架支承的空间结构为研究对象,系统地研究了该类组合结构在多遇地震一致激励下的扭转耦联效应问题。针对空间结构的扭转形式及特点,以反应谱法和位能加权平均法为基础,提出了解决此类问题的力学分析模型—柔度层模型和计算方法,并通过案例分析,验证了该方法的正确性和可行性。结果表明:下部结构存在或不存在扭转,空间结构的平移位移的变化趋势基本相同,但是下部结构体系的扭转会对空间结构水平侧向位移产生了较大影响,大约提高10%左右。目前,国内外对空间结构的扭转现象分析较少,很多相关的问题有待深入研究。
With concrete frame supporting spatial structure for research object,The paper systematically studied its lateral-torsion coupling effect of reverse problems in earthquake excitation consistent.Firstly,based on the response spectrum method and the potential of the weighted average method and its reverse forms and features,the mechanical analysis model—flexibility layer model and the calculation method were put forward,and their validity and feasibility is verified through a lot of cases analysis.the result shows that the spatial structure change trend of the translation displacement are basically the same whether or not reverse exists in the supporting structure,but the supporting structure torsion has quite an effect on it and about improving 10%.At present,about its study is less at home and abroad,many relevant problems have yet to be solved.
With concrete frame supporting spatial structure for research object,The paper systematically studied its lateral-torsion coupling effect of reverse problems in earthquake excitation consistent.Firstly,based on the response spectrum method and the potential of the weighted average method and its reverse forms and features,the mechanical analysis model—flexibility layer model and the calculation method were put forward,and their validity and feasibility is verified through a lot of cases analysis.the result shows that the spatial structure change trend of the translation displacement are basically the same whether or not reverse exists in the supporting structure,but the supporting structure torsion has quite an effect on it and about improving 10%.At present,about its study is less at home and abroad,many relevant problems have yet to be solved.
引文
[1]沈蒲生,孟焕陵,刘杨.考虑构件抗扭刚度的高层建筑结构抗扭计算[J].铁道科学与工程学报,2006,2(3):21-25.
[2]Dimov,Alashki.Seismic design of symmetric structures foraccidental torsion[J].Bulletin of earthquake engineering,2003(I):303-320.
[3]何晓宇,李宏男.偏心形式对偏心结构扭转耦联地震响应的影响[J].世界地震工程,2008,24(3):36-44.
[4]李宏男.结构多维抗震理论[M].北京:科学出版社,2006.
[5]徐培福,黄吉锋,韦承基.高层建筑结构的扭转反应控制[J].土木工程学报,2006,39(7):1-8.
[6]蔡健,潘东辉,黄炎生.高层建筑结构扭转振动效应控制研究[J].工程力学,2007,24(7):116-121.
[7]JUAN C,ALMAZA J L.Torsional balance of plan-asymmetricstructures with frictional dampers:analytical results[J].Earthquake Engineering and Structural Dynamics,2005,34(9):1089-1108.
[8]GOEL R K.Seismic response of linear and non-linearasymmetric systems with non-linear fluid viscous dampers[J].Earthquake Engineering and Structural Dynamics,2005,(34):825-846.
[9]GB50011-2001建筑抗震设计规范(2008版)[S].北京:建筑工业出版社,2008.
[10]2002.International Code Council,International Building Code[S].2003.
[11]NBCC.2005 National building code of Canada[S].Ottawa:National Research Council of Canada,2005.
[12]韩军,李英民.抗震结构扭转控制及设计方法的国内外规范对比分析[J].西安建筑科技大学学报:自然科学版,2008,40(1):25-32.
[13]王仕统.简论空间结构[J].空间结构,2008,14(3):13-21.
[14]王秀丽.大跨度空间钢结构分析与概念设计[M].北京:机械工业出版社,2008.
[15]沈世钊.现代空间结构与奥运场馆建设[J].中国工程科学,2008,10(8):12-21.
[16]田玉基,杨庆山.地震地面运动作用下结构反应的分析模型[J].工程力学,2005,22(5):170-174.
[17]楼梦麟,李强.关于结构系统地震输入模式问题的讨论[J].世界地震工程,2008,24(2):21-25.
[18]曹资,薛素铎.空间结构抗震理论与设计[M].北京:科学出版社,2005.
[19]张亚辉,李丽媛,陈艳,林家浩.大跨度结构地震行波效应研究[J].2005,45(4):480-486.
[20]全伟,李宏男.大跨结构多维多点输入抗震研究进展[J].防灾减灾工程学报,2006,26(3):333-349.
[21]柯世堂,张令心,赵林,等.多点输入下球面网壳结构地震响应研究[J].山东建筑大学学报,2009,24(3):198-202.
[22]李忠献,林伟,丁阳.行波效应对大跨度空间网格结构地震响应的影响[J].天津大学学报,2007,40(1):1-8.
[23]曹资,薛素铎,王雪生,刘迎春.空间结构抗震分析中的地震波选取与阻尼比取值[J].空间结构,2008,14(3):3-8.
[2]Dimov,Alashki.Seismic design of symmetric structures foraccidental torsion[J].Bulletin of earthquake engineering,2003(I):303-320.
[3]何晓宇,李宏男.偏心形式对偏心结构扭转耦联地震响应的影响[J].世界地震工程,2008,24(3):36-44.
[4]李宏男.结构多维抗震理论[M].北京:科学出版社,2006.
[5]徐培福,黄吉锋,韦承基.高层建筑结构的扭转反应控制[J].土木工程学报,2006,39(7):1-8.
[6]蔡健,潘东辉,黄炎生.高层建筑结构扭转振动效应控制研究[J].工程力学,2007,24(7):116-121.
[7]JUAN C,ALMAZA J L.Torsional balance of plan-asymmetricstructures with frictional dampers:analytical results[J].Earthquake Engineering and Structural Dynamics,2005,34(9):1089-1108.
[8]GOEL R K.Seismic response of linear and non-linearasymmetric systems with non-linear fluid viscous dampers[J].Earthquake Engineering and Structural Dynamics,2005,(34):825-846.
[9]GB50011-2001建筑抗震设计规范(2008版)[S].北京:建筑工业出版社,2008.
[10]2002.International Code Council,International Building Code[S].2003.
[11]NBCC.2005 National building code of Canada[S].Ottawa:National Research Council of Canada,2005.
[12]韩军,李英民.抗震结构扭转控制及设计方法的国内外规范对比分析[J].西安建筑科技大学学报:自然科学版,2008,40(1):25-32.
[13]王仕统.简论空间结构[J].空间结构,2008,14(3):13-21.
[14]王秀丽.大跨度空间钢结构分析与概念设计[M].北京:机械工业出版社,2008.
[15]沈世钊.现代空间结构与奥运场馆建设[J].中国工程科学,2008,10(8):12-21.
[16]田玉基,杨庆山.地震地面运动作用下结构反应的分析模型[J].工程力学,2005,22(5):170-174.
[17]楼梦麟,李强.关于结构系统地震输入模式问题的讨论[J].世界地震工程,2008,24(2):21-25.
[18]曹资,薛素铎.空间结构抗震理论与设计[M].北京:科学出版社,2005.
[19]张亚辉,李丽媛,陈艳,林家浩.大跨度结构地震行波效应研究[J].2005,45(4):480-486.
[20]全伟,李宏男.大跨结构多维多点输入抗震研究进展[J].防灾减灾工程学报,2006,26(3):333-349.
[21]柯世堂,张令心,赵林,等.多点输入下球面网壳结构地震响应研究[J].山东建筑大学学报,2009,24(3):198-202.
[22]李忠献,林伟,丁阳.行波效应对大跨度空间网格结构地震响应的影响[J].天津大学学报,2007,40(1):1-8.
[23]曹资,薛素铎,王雪生,刘迎春.空间结构抗震分析中的地震波选取与阻尼比取值[J].空间结构,2008,14(3):3-8.
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