外框密肋复合墙抗剪机理及承载力计算
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摘要
在外框密肋复合墙低周反复荷载试验的基础上,对墙体的抗剪机理进行了分析;依据极限平衡理论引入砌体抗剪承载力影响系数和框格承载力影响系数,同时考虑RC框格与填充砌块之间的相互作用;提出了外框密肋复合墙抗剪承载力计算公式;本文公式计算结果与试验结果、有限元数值模拟结果进行了比较。研究表明:本文基于水平薄弱层破坏建立的外框密肋复合墙抗剪公式较传统基于斜截面破坏建立的抗剪公式具有更明确的物理意义;本文公式计算精度较高,与试验结果、有限元数值模拟结果相差不到10%。
The multi-grid composite wall with outer frame is one type seismic walls consisting of internal RC composite wall and outer frame,and is important member of load-bearing and resistances to lateral force in the frame-composite wall structures.Study the shear mechanism and capacity calculation method of the multi-grid composite wall with outer frame is the premise for seismic design of the structure.Firstly,based on the experiments,shear mechanism of the wall is analyzed.Secondly,according to the ultimate balance theory,formula for calculating the shear load-bearing capacity of the frame-composite wall is proposed,and comparison to the formula of homogeneous material wall is made.Finally,the accuracy of the formula is verified by the test and finite element simulation results.The research results obtained indicate that the formula proposed has more definite physical meaning than the formula which is established according to oblique section failure mechanism.It is accurate and simple,and can be used in practice for designing the frame-composite wall structures as a reference.
The multi-grid composite wall with outer frame is one type seismic walls consisting of internal RC composite wall and outer frame,and is important member of load-bearing and resistances to lateral force in the frame-composite wall structures.Study the shear mechanism and capacity calculation method of the multi-grid composite wall with outer frame is the premise for seismic design of the structure.Firstly,based on the experiments,shear mechanism of the wall is analyzed.Secondly,according to the ultimate balance theory,formula for calculating the shear load-bearing capacity of the frame-composite wall is proposed,and comparison to the formula of homogeneous material wall is made.Finally,the accuracy of the formula is verified by the test and finite element simulation results.The research results obtained indicate that the formula proposed has more definite physical meaning than the formula which is established according to oblique section failure mechanism.It is accurate and simple,and can be used in practice for designing the frame-composite wall structures as a reference.
引文
[1]郭猛,姚谦峰.框架-密肋复合墙结构新体系研究[J].地震工程与工程振动,2009,29(5):73-78.
[2]Liu P,Yao Q F.Dynamic reliability of structures:the example ofmulti-grid composite walls[J].Structural Engineering and Mechanics,2010,36(4):463-479.
[3]黄炜.密肋复合墙体抗震性能及设计理论研究[D].西安:西安建筑科技大学,2004.
[4]中国建筑科学研究院.GB50010-2002.混凝土结构设计规范[S].北京:中国建筑工业出版社,2002.
[5]郭猛,姚谦峰,袁泉,等.框架-密肋复合墙体抗震性能试验研究[J].建筑结构学报,2011,32(3):50-56.
[6]常鹏,姚谦峰.密肋复合墙体受剪性能试验研究及弹塑性数值分析[J].建筑结构学报,2011,31(4):116-123.
[7]冯颖慧.一种新型复合剪力墙抗震试验研究[D].天津:天津大学,1999.
[8]周炳章,夏敬谦.水平配筋砖砌体抗震性能的试验研究[J].建筑结构学报,1991,12(4):31-43.
[9]施楚贤,周海兵.配筋砌体剪力墙的抗震性能[J].建筑结构学报,1997,18(6):32-40.
[10]熊立红,张敏政.设置芯柱-构造柱混凝土砌块墙体抗震剪切承载力计算[J].地震工程与工程振动,2004,24(2):82-87.
[11]喻磊.密肋复合墙板框格单元在地震作用下的受力机理及弹塑性损伤模型研究[D].西安:西安建筑科技大学,2006.
[2]Liu P,Yao Q F.Dynamic reliability of structures:the example ofmulti-grid composite walls[J].Structural Engineering and Mechanics,2010,36(4):463-479.
[3]黄炜.密肋复合墙体抗震性能及设计理论研究[D].西安:西安建筑科技大学,2004.
[4]中国建筑科学研究院.GB50010-2002.混凝土结构设计规范[S].北京:中国建筑工业出版社,2002.
[5]郭猛,姚谦峰,袁泉,等.框架-密肋复合墙体抗震性能试验研究[J].建筑结构学报,2011,32(3):50-56.
[6]常鹏,姚谦峰.密肋复合墙体受剪性能试验研究及弹塑性数值分析[J].建筑结构学报,2011,31(4):116-123.
[7]冯颖慧.一种新型复合剪力墙抗震试验研究[D].天津:天津大学,1999.
[8]周炳章,夏敬谦.水平配筋砖砌体抗震性能的试验研究[J].建筑结构学报,1991,12(4):31-43.
[9]施楚贤,周海兵.配筋砌体剪力墙的抗震性能[J].建筑结构学报,1997,18(6):32-40.
[10]熊立红,张敏政.设置芯柱-构造柱混凝土砌块墙体抗震剪切承载力计算[J].地震工程与工程振动,2004,24(2):82-87.
[11]喻磊.密肋复合墙板框格单元在地震作用下的受力机理及弹塑性损伤模型研究[D].西安:西安建筑科技大学,2006.
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