SRC框支剪力墙结构地震反应简化分析模型研究
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摘要
针对钢筋混凝土高层框支剪力墙结构抗震性能差的缺点,提出采用型钢混凝土(SRC)梁柱框支剪力墙,试验结果表明了其良好的抗震性能。提出了框支剪力墙结构地震反应简化分析模型,将结构简化为由墙单元和框支单元组成的弹簧体系,墙单元采用二元件模型。推导了框支单元刚度矩阵,基于理论公式和试验结果给出了框支单元恢复力模型。根据提出的简化模型,编制了结构地震反应时程分析程序。程序计算结果与ETABS分析结果及振动台试验结果吻合较好,为进一步对SRC框支剪力墙结构进行地震反应分析提供了理论基础。
In order to improve the seismic behavior of the structure of shear wall with reinforced concrete frame normally,the frame with steel reinforcing is proposed.An experimental investigation was conducted to study the behavior of the proposed structure subjected to simulated seismic load,and the results of the test indicate that the system of shear wall supported by frame reinforced with steel members possess exceptional capability for earthquake-resistance.A simplified model for seismic analysis of this type of structure is presented.The model is simplified as the spring system with two kinds of elements of shear wall and frame-supporting,and the shear wall element is simplified as a two-spring model.The stiffness matrix of frame-supported element is deduced.Based on the theory formulas and the test results,the restoring model of the frame-supported element is presented and the seismic response program is developed.The calculation results show good agreement with the results of ETABS and shaking table test,which can be a theory base for further study on seismic analysis of the structure of shear wall supported by SRC frame.
In order to improve the seismic behavior of the structure of shear wall with reinforced concrete frame normally,the frame with steel reinforcing is proposed.An experimental investigation was conducted to study the behavior of the proposed structure subjected to simulated seismic load,and the results of the test indicate that the system of shear wall supported by frame reinforced with steel members possess exceptional capability for earthquake-resistance.A simplified model for seismic analysis of this type of structure is presented.The model is simplified as the spring system with two kinds of elements of shear wall and frame-supporting,and the shear wall element is simplified as a two-spring model.The stiffness matrix of frame-supported element is deduced.Based on the theory formulas and the test results,the restoring model of the frame-supported element is presented and the seismic response program is developed.The calculation results show good agreement with the results of ETABS and shaking table test,which can be a theory base for further study on seismic analysis of the structure of shear wall supported by SRC frame.
引文
[1]李国强,崔大光,李一松.型钢混凝土梁柱框支剪力墙结构抗震性能试验研究[J].地震工程与工程振动,2006,26(2):80-87.
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[2]黄宗瑜.框支剪力墙结构体系的简化抗震分析[J].建筑结构学报,1988,8(4):22-36.
[3]包世华.高层建筑结构计算[M].北京:高等教育出版社,1991.
[4]钱仲范,黄鼎业,刘昌堃.框支剪力墙结构的有限条算法[J].工程数学学报,1991,8(4):17-24.
[5]张同亿,李从林,许菊萍.高层框支剪力墙结构地震反应分析的超元法[J].地震工程与工程振动,2002,22(2):80-84.
[6]沈蒲生,刘杨.水平地震作用下框支剪力墙结构的变形研究[J].建筑科学与工程学报,2005,22(1):58-63.
[7]孙景江.框架-剪力墙型结构的非线性随机地震反应和可靠性分析[J].地震工程与工程振动,1992,12(2):59-67.
[8]梁启智.高层建筑结构分析与设计[M].广州:华南理工大学出版社,1992.
[9]黄宗瑜,沈聚敏.框支剪力墙结构地震反应的研究[J].建筑结构学报,1986,7(6):40-51.
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