基于构件拆除法的RC框架结构动力反应和抗倒塌能力分析
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摘要
目前,地震及爆炸荷载下的结构连续倒塌问题已成为土木工程领域研究的热点。本文首先简要介绍了国内外有关连续倒塌问题的研究现状和规范制定情况,然后基于OpenSees模拟平台,对一钢筋混凝土框架结构进行了拆除柱构件的动力分析。计算结果表明:拆除边柱比拆除内柱对结构的倒塌危险性要大,楼板对拆除构件后结构的动力反应有一定的减小作用。依据美国公共事务管理局(GSA)的倒塌规范,采用静力非线性分析和竖向增量动力分析对结构抗连续倒塌能力进行了研究。分析结果表明:楼板在一定程度上可提高结构抗连续倒塌能力;动力放大系数(DAF)随结构进入塑性而逐渐增大;由静力非线性分析曲线得到的结构抗连续倒塌能力曲线与竖向增量动力分析曲线吻合较好。
Currently,earthquake and explosion loading structural progressive collapse has become a research focus in the field of Civil Engineering.Firstly,this paper briefly describes the situation of collapse and norm-setting in domestic and international issues.Then,the dynamic response of column removal from an RC frame structure was analyzed based on OpenSees simulation platform.Our results show that the risk of removing outside columns is higher than removing inside column and casting slab to dynamic response has a certain role in the decrease after component removal.Based on the U.S.General Service Administration(GSA) collapse norms,non-linear static analysis and dynamic analysis of vertical increment methods is used to study the ability of anti-progressive collapse.It is demonstrated that casting slab can improve the ability of anti-progressive collapse in a certain extent;the dynamic magnification factor(DAF) gradually increases with the structure entering into the plastic state;and the anti-progressive collapse curves obtained from the methods of non-linear static analysis and dynamic analysis of vertical increment are in good agreement.
Currently,earthquake and explosion loading structural progressive collapse has become a research focus in the field of Civil Engineering.Firstly,this paper briefly describes the situation of collapse and norm-setting in domestic and international issues.Then,the dynamic response of column removal from an RC frame structure was analyzed based on OpenSees simulation platform.Our results show that the risk of removing outside columns is higher than removing inside column and casting slab to dynamic response has a certain role in the decrease after component removal.Based on the U.S.General Service Administration(GSA) collapse norms,non-linear static analysis and dynamic analysis of vertical increment methods is used to study the ability of anti-progressive collapse.It is demonstrated that casting slab can improve the ability of anti-progressive collapse in a certain extent;the dynamic magnification factor(DAF) gradually increases with the structure entering into the plastic state;and the anti-progressive collapse curves obtained from the methods of non-linear static analysis and dynamic analysis of vertical increment are in good agreement.
引文
程纬,2002.基于ANSYS二次开发的钢筋混凝土结构倒塌仿真分析及其程序设计.上海:同济大学出版社.
黄庆华,2006.地震作用下钢筋混凝土框架结构空间倒塌反应分析.上海:同济大学出版社.
胡晓斌,钱稼茹,2008.单层平面钢框架连续倒塌动力效应分析.工程力学,25(6):38—43.
刘海卿,倪镇国,欧进萍,2008.强震作用下砌体结构倒塌过程仿真分析.地震工程与工程振动,28(5):92—96.
陆新征,李易,叶列平等,2008.钢筋混凝土框架结构抗连续倒塌设计方法的研究.工程力学,25(2):150—157.
吴勇,雷汲川,杨红等,2002.板筋参与梁端负弯矩承载力问题的探讨.重庆建筑大学学报,24(3):33—37.
中华人民共和国国家标准,2002a.结构设计规范(GB50010-2002).北京:中国建筑工业出版社.
中华人民共和国国家标准,2002b.建筑结构可靠度设计统一标准(GB50068-2001).北京:中国建筑工业出版社.
Abruzzo J.,Matta A.,Panariello G.,2006.Study of mitigation strategies for progressive collapse of a reinforced concrete commercial building.Journal of Performance of Constructed Facilities,20(4):384—390.
DoD2005,2005.Design of buildings to resist progressive collapse.Department of Defense,January2005.
Eurocode1,2003.Actions on structures-Part1-7:General actions-Accidental actions.Final Project Team Draft(Stage34),Draft prEN1991-1-7.European Committee for Standardization,2003.
GSA2003,2003.Progressive collapse analysis and design guidelines for new federal office buildings and major modernization projects.General Services Administration,June2003.
Hakuno M.,Meguro K.,1993.Simulation of concrete-frame collapse due to dynamic loading.Journal of Engineering Mechanics,119(9):1709—1723.
Isobe D.,Tsuda M.,2003.Seismic collapse analysis of reinforced concrete framed structures using the finite element method.Earthquake Engineering and Structural Dynamics,32:2027—2046.
Mazzoni S.,McKenna F.,Michael H.et al.,2006.OpenSees user manual.Berkeley:PEER Center,University of California at Berkeley,2006.
Meguro K.,Tagel-Din H.,2001.Applied element simulation of RC structures under cyclic loading.Journal of Structural Engineering,127(11):1295—1305.
National Building Code of Canada,1975.National Research Council of Canada.
Pearson C.,Delatter N.,2005.Ronan point apartment tower collapse and its effect on building codes.Journal of Performance of Constructed Facilities,19(2):172—177.
Scott B.D.,Park R.,Priestley M.J.N.,1982.Stress-strain behavior of concrete confined by overlapping hoops at low and high strain rates.ACI Structural Journal,79:13—27.
Tagel-Din H.,Meguro K.,2000.Analysis of a small scale RC building subjected to shaking table tests using applied element method.12WCEE,2000.
Talaat M.,Mosalam K.M.,2009.Modeling progressive collapse in reinforced concrete buildings using direct element removal.Earthquake Engineering and Structural Dynamics,10.1002/eqe.898.
黄庆华,2006.地震作用下钢筋混凝土框架结构空间倒塌反应分析.上海:同济大学出版社.
胡晓斌,钱稼茹,2008.单层平面钢框架连续倒塌动力效应分析.工程力学,25(6):38—43.
刘海卿,倪镇国,欧进萍,2008.强震作用下砌体结构倒塌过程仿真分析.地震工程与工程振动,28(5):92—96.
陆新征,李易,叶列平等,2008.钢筋混凝土框架结构抗连续倒塌设计方法的研究.工程力学,25(2):150—157.
吴勇,雷汲川,杨红等,2002.板筋参与梁端负弯矩承载力问题的探讨.重庆建筑大学学报,24(3):33—37.
中华人民共和国国家标准,2002a.结构设计规范(GB50010-2002).北京:中国建筑工业出版社.
中华人民共和国国家标准,2002b.建筑结构可靠度设计统一标准(GB50068-2001).北京:中国建筑工业出版社.
Abruzzo J.,Matta A.,Panariello G.,2006.Study of mitigation strategies for progressive collapse of a reinforced concrete commercial building.Journal of Performance of Constructed Facilities,20(4):384—390.
DoD2005,2005.Design of buildings to resist progressive collapse.Department of Defense,January2005.
Eurocode1,2003.Actions on structures-Part1-7:General actions-Accidental actions.Final Project Team Draft(Stage34),Draft prEN1991-1-7.European Committee for Standardization,2003.
GSA2003,2003.Progressive collapse analysis and design guidelines for new federal office buildings and major modernization projects.General Services Administration,June2003.
Hakuno M.,Meguro K.,1993.Simulation of concrete-frame collapse due to dynamic loading.Journal of Engineering Mechanics,119(9):1709—1723.
Isobe D.,Tsuda M.,2003.Seismic collapse analysis of reinforced concrete framed structures using the finite element method.Earthquake Engineering and Structural Dynamics,32:2027—2046.
Mazzoni S.,McKenna F.,Michael H.et al.,2006.OpenSees user manual.Berkeley:PEER Center,University of California at Berkeley,2006.
Meguro K.,Tagel-Din H.,2001.Applied element simulation of RC structures under cyclic loading.Journal of Structural Engineering,127(11):1295—1305.
National Building Code of Canada,1975.National Research Council of Canada.
Pearson C.,Delatter N.,2005.Ronan point apartment tower collapse and its effect on building codes.Journal of Performance of Constructed Facilities,19(2):172—177.
Scott B.D.,Park R.,Priestley M.J.N.,1982.Stress-strain behavior of concrete confined by overlapping hoops at low and high strain rates.ACI Structural Journal,79:13—27.
Tagel-Din H.,Meguro K.,2000.Analysis of a small scale RC building subjected to shaking table tests using applied element method.12WCEE,2000.
Talaat M.,Mosalam K.M.,2009.Modeling progressive collapse in reinforced concrete buildings using direct element removal.Earthquake Engineering and Structural Dynamics,10.1002/eqe.898.
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