钢筋混凝土框架结构层间隔震有限元分析方法
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摘要
层间隔震是当前抗震防护技术中的热点问题之一。本文首先给出钢筋混凝土弹性矩阵的等效计算方法以及普通叠层橡胶支座(RB)、铅芯橡胶支座(LRB)等效弹簧单元刚度矩阵的计算方法;接着采用ABUQUS软件建立框架数值模型并设置相应的边界条件;最后以一幢8层钢筋混凝土框架结构建筑为例,通过数值计算,比较分析了以RB橡胶支座和LRB橡胶支座作为隔震装置的两种层间隔震方案的优劣。计算结果表明:与传统结构相比,两种层间隔震方案都能大大降低上部结构的加速度、位移响应;上部结构运动近似于刚体运动,抗震效果明显。总体上看,LRB隔震方案优于RB隔震方案。本文方法对钢筋混凝土层间隔震技术的数值模拟研究有一定的意义。
Interlayer isolation is one of hotspot problems in current seismic protection field.In this paper,the equivalent computation methods for elastic matrix of reinforcement concrete and equivalent spring stiffness matrix of common laminate rubber bearing(RB) and lead rubber bearing are presented at first.Then the software,ABUQUS based on finite element method is used to investigate the anti seismic efficiency of one 8-layer interlayer isolation reinforced concrete frame structure in which RB and LRB bearings are considered respectively.The results show that Compared with traditional methods,the two isolation schemes using RB and LRB respectively can achieve significant effective which is displayed by lower acceleration and displacement.All in all,LRB perform better than RB.The realization of the numerical simulation in this paper can promote the numerical simulation study on interlayer isolation of reinforced concrete frame structure.
Interlayer isolation is one of hotspot problems in current seismic protection field.In this paper,the equivalent computation methods for elastic matrix of reinforcement concrete and equivalent spring stiffness matrix of common laminate rubber bearing(RB) and lead rubber bearing are presented at first.Then the software,ABUQUS based on finite element method is used to investigate the anti seismic efficiency of one 8-layer interlayer isolation reinforced concrete frame structure in which RB and LRB bearings are considered respectively.The results show that Compared with traditional methods,the two isolation schemes using RB and LRB respectively can achieve significant effective which is displayed by lower acceleration and displacement.All in all,LRB perform better than RB.The realization of the numerical simulation in this paper can promote the numerical simulation study on interlayer isolation of reinforced concrete frame structure.
引文
[1]张述勇.结构抗震基本知识[M].北京:清华大学出版社,1997.
[2]祁皑.层间隔震技术评述[J].地震工程与工程振动,2004(6).
[3]薛素铎,赵均,高向宇.建筑抗震设计[M].北京:科学出版社,2003.
[4]吴彬.铅芯橡胶支座力学性能及其在桥梁工程中减、隔震应用的研究[D].北京:铁道部科学研究院,2003.
[5]李慧,杜永峰,屠锦敏,等.叠层橡胶垫基础隔震技术的研究[J].甘肃工业大学学报,1999(2).
[6]刘勇军,裘喜芸,徐海艳.大底盘层间隔震结构抗震性能研究[J].Journal of Water Resources and Architectural Engineering,2011(2).
[7]Benassi L,Elliott S J.Active vibration isolation using an inertialactuator with local displacement feedback control[J].Journal ofSound and Vibration,2004(278):705-724.
[8]王小荣,蹇开林,刘敏,等.碳纤维布加固混凝土结构有限元分析[J].重庆大学学报:自然科学版,2003(2).
[9]周锡元,韩淼,曾德民,等.组合橡胶支座及橡胶支座与柱串联系统的水平刚度计算方法[J].地震工程与工程振动,1999(4).
[10]黄襄云.层间隔震减震结构的理论分析和振动台试验研究[D].西安:西安建筑科技大学,2008.
[11]于泳波.多层框架结构的隔、减震研究[D].西安:西安理工大学,2000.
[12]Delfoss G C.The GAPEC System:A New Hiy Effective AseismicSystem of Sixth World Conference on Earthquake Engineering[C]//New Delhi.India,1977.
[13]Skinner R T,Beck J I,Bycroft G N.A Practical System for IsolatingStructure from Earthquake Attack[J].International Journal ofEarthquake Engineering and Structural Dynamics,1975(1).
[14]孔丹丹,赵颖华,土萍,等.钢筋混凝土材料有限元分析中的等效模量方法[J].沈阳建筑人学学报:自然科学版,2005(3).
[15]宋涛.层间隔震结构简化设计方法研究[D].西安:西安建筑科技大学,2010.
[16]马成,苏原.结构抗震设计[M].北京:北京大学出版社,2006.
[2]祁皑.层间隔震技术评述[J].地震工程与工程振动,2004(6).
[3]薛素铎,赵均,高向宇.建筑抗震设计[M].北京:科学出版社,2003.
[4]吴彬.铅芯橡胶支座力学性能及其在桥梁工程中减、隔震应用的研究[D].北京:铁道部科学研究院,2003.
[5]李慧,杜永峰,屠锦敏,等.叠层橡胶垫基础隔震技术的研究[J].甘肃工业大学学报,1999(2).
[6]刘勇军,裘喜芸,徐海艳.大底盘层间隔震结构抗震性能研究[J].Journal of Water Resources and Architectural Engineering,2011(2).
[7]Benassi L,Elliott S J.Active vibration isolation using an inertialactuator with local displacement feedback control[J].Journal ofSound and Vibration,2004(278):705-724.
[8]王小荣,蹇开林,刘敏,等.碳纤维布加固混凝土结构有限元分析[J].重庆大学学报:自然科学版,2003(2).
[9]周锡元,韩淼,曾德民,等.组合橡胶支座及橡胶支座与柱串联系统的水平刚度计算方法[J].地震工程与工程振动,1999(4).
[10]黄襄云.层间隔震减震结构的理论分析和振动台试验研究[D].西安:西安建筑科技大学,2008.
[11]于泳波.多层框架结构的隔、减震研究[D].西安:西安理工大学,2000.
[12]Delfoss G C.The GAPEC System:A New Hiy Effective AseismicSystem of Sixth World Conference on Earthquake Engineering[C]//New Delhi.India,1977.
[13]Skinner R T,Beck J I,Bycroft G N.A Practical System for IsolatingStructure from Earthquake Attack[J].International Journal ofEarthquake Engineering and Structural Dynamics,1975(1).
[14]孔丹丹,赵颖华,土萍,等.钢筋混凝土材料有限元分析中的等效模量方法[J].沈阳建筑人学学报:自然科学版,2005(3).
[15]宋涛.层间隔震结构简化设计方法研究[D].西安:西安建筑科技大学,2010.
[16]马成,苏原.结构抗震设计[M].北京:北京大学出版社,2006.
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