保温复合剪力墙抗震性能试验研究
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摘要
通过对5片保温复合剪力墙和1片传统外保温施工的普通钢筋混凝土剪力墙进行低周反复荷载试验,对各剪力墙试件的破坏特征、裂缝开展情况、承载能力、滞回性能、骨架曲线、刚度退化、位移延性及耗能能力进行分析,研究了在不同高宽比、轴压比以及不同界面连接方式等条件下保温复合剪力墙的整体工作性能和抗震性能,并与普通混凝土剪力墙进行对比。研究结果表明:保温复合剪力墙整体工作性能良好,具有较好的抗震性能;高宽比小的剪力墙的承载力和初始刚度都较大,但其弹塑性变形能力低,刚度退化速率快,延性性能较差;随着轴压比的增大,剪力墙的延性性能变差,但承载力和耗能能力都有所提高;在保温复合剪力墙的界面上设置栓钉对墙体耗能能力的提高影响比较显著。
Quasi-static tests were conducted under cyclic loading on five thermal insulation composite shear walls and one common reinforced concrete shear wall with external thermal preservation.The crack feature,crack development,bearing capacity,hysteretic performance,skeleton curve,stiffness degradation curve,displacement ductility and energy dissipation capacity of each shear wall specimen were analyzed.Compared with the common concrete shear wall,the holistic performance and seismic performance of composite shear wall were studied under the conditions of different height-width ratio,axial compression ratio and different interface connection modes.The results show that the thermal insulation composite shear wall has good holistic performance and good seismic performance.The bearing capacity and initial stiffness of the shear wall with lower height-width ratio is larger,but the elastic and plastic deformation ability is lower,the stiffness degradation rate is faster,and has worse ductility performance.With the increase of the axial compression ratio,the ductility performance of the shear wall becomes worse,but the bearing capacity and energy dissipation capacity are improved.Setting studs between thermal insulation composite shear wall interface can improve the energy dissipation capacity significantly.
Quasi-static tests were conducted under cyclic loading on five thermal insulation composite shear walls and one common reinforced concrete shear wall with external thermal preservation.The crack feature,crack development,bearing capacity,hysteretic performance,skeleton curve,stiffness degradation curve,displacement ductility and energy dissipation capacity of each shear wall specimen were analyzed.Compared with the common concrete shear wall,the holistic performance and seismic performance of composite shear wall were studied under the conditions of different height-width ratio,axial compression ratio and different interface connection modes.The results show that the thermal insulation composite shear wall has good holistic performance and good seismic performance.The bearing capacity and initial stiffness of the shear wall with lower height-width ratio is larger,but the elastic and plastic deformation ability is lower,the stiffness degradation rate is faster,and has worse ductility performance.With the increase of the axial compression ratio,the ductility performance of the shear wall becomes worse,but the bearing capacity and energy dissipation capacity are improved.Setting studs between thermal insulation composite shear wall interface can improve the energy dissipation capacity significantly.
引文
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[2]杨联萍,余少乐,张其林,等.叠合剪力墙结构研究现状和关键问题[J].建筑结构,2017,47(12):78-88.
[3]王滋军,刘伟庆,叶燕华,等.钢筋混凝土开洞叠合剪力墙抗震性能试验研究[J].建筑结构学报,2012,33(7):156-163.
[4]王滋军,刘伟庆,翟文豪,等.新型预制叠合剪力墙抗震性能试验研究[J].中南大学学报(自然科学版),2015,46(4):1409-1419.
[5]魏威,叶燕华,王滋军,等.新型钢筋混凝土叠合剪力墙抗震性能试验研究[J].混凝土,2011(6):15-18.
[6]种迅,叶献国,徐勤,等.工字形横截面叠合板式剪力墙低周反复荷载下剪切滑移机理与数值模拟分析[J].土木工程学报,2013,46(5):111-116.
[7]章红梅,吕西林,段元锋,等.半预制钢筋混凝土叠合墙(PPRC-CW)非线性研究[J].土木工程学报,2010,43(S2):93-100.
[8]初明进,刘继良,侯建群,等.预制混凝土空心模剪力墙受力性能试验研究[J].建筑结构学报,2017,38(12):32-40.
[9]宋小软,高建岭,曲俊义.GRC模板的物理力学性能试验研究[J].北京工业大学学报,2008(7):708-713.
[10]宋小软,代巍,徐子亮,等.GRC模板的抗碱性能及耐久性能试验研究[J].北京工业大学学报,2011,37(2):206-210.
[11]宋小软,牛伟,王国勇,等.具有保温功能的夹芯式复合剪力墙的研制[J].河北工业大学学报,2014,43(6):101-104,116.
[12]高层建筑混凝土结构技术规程:JGJ 3-2010[S].北京:中国建筑工业出版社,2010.
[13]建筑抗震设计规范:GB 50011-2010[S].北京:中国建筑工业出版社,2010.
[14]建筑抗震试验规程:JGJ 101/T 101-2015[S].北京:中国建筑工业出版社,2015.
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