短肢剪力墙对型钢混凝土异型节点力学性能的影响研究
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摘要
针对火电厂型钢混凝土混合结构主厂房中典型异型节点的实际受力情况,完成了5个1/5缩尺比例的型钢混凝土异型节点低周反复加载试验,主要分析了沿柱高布置短肢剪力墙对型钢混凝土异型节点抗震性能的影响。研究结果表明:短肢剪力墙对型钢混凝土异型节点的裂缝开展具有较好的约束作用,设置短肢剪力墙后,型钢混凝土异型节点的滞回性能、耗能能力、承载能力、刚度特性与延性性能均有了较大的提高与改善,且配置横向短肢剪力墙的效果优于布置纵向短肢剪力墙。
Following the actual stress states of typical abnormal joints of SRC hybrid structures in power plants,five 1/5 scale model abnormal joints were tested under low-cyclic reversed loading. The influence of setting short-limb shear walls along the height of SRC columns on the seismic performance of SRC abnormal joints was analyzed. The results show that short-limb shear walls can restrain the development of cracks, as well as greatly improve the hysteretic performance, energy dissipation capacity, bearing capacity, stiffness characteristics, and ductility performance of SRC abnormal joints; also, the improvement is greater in SRC abnormal joints with horizontal short limb-shear walls than in the joints with longitudinal short-limb shear walls.
Following the actual stress states of typical abnormal joints of SRC hybrid structures in power plants,five 1/5 scale model abnormal joints were tested under low-cyclic reversed loading. The influence of setting short-limb shear walls along the height of SRC columns on the seismic performance of SRC abnormal joints was analyzed. The results show that short-limb shear walls can restrain the development of cracks, as well as greatly improve the hysteretic performance, energy dissipation capacity, bearing capacity, stiffness characteristics, and ductility performance of SRC abnormal joints; also, the improvement is greater in SRC abnormal joints with horizontal short limb-shear walls than in the joints with longitudinal short-limb shear walls.
引文
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[4]白国良,李红星,朱佳宁.钢筋混凝土框架异型节点抗震性能试验研究[J].建筑结构学报,2004,25(4):8―14,25.Bai Guoliang,Li Hongxing,Zhu Jianing.Experimental study on seismic behavior of abnormal joints of reinforced concrete frame[J].Journal of Building Structures,2004,25(4):8―14,25.(in Chinese)
[5]Lv D Y,Li N,Zhai R Z.Calculation on crack resistance capacity of abnormal interior joints in reinforced concrete frame structures[J].Advanced Materials Research,2012,368/369/370/371/372/373:942―945.
[6]GB 50011-2010,建筑抗震设计规范[S].北京:中国建筑工业出版社,2010.GB 50011-2010,Code for Seismic Design of Buildings[S].Beijing:China Architecture Industry Press,2010.(in Chinese)
[7]JGJ 138-2001,型钢混凝土组合结构技术规程[S].北京:中国建筑工业出版社,2001.JGJ 138-2001,Technical Specification for Steel Reinforced Concrete Composite Structures[S].Beijing:China Architecture Industry Press,2001.(in Chinese)
[8]姚谦峰.土木工程结构试验[M].北京:中国建筑工业出版社,2008:188―189.Yao Qianfeng.Civil Engineering Experiment[M].Beijing:China Architecture Industry Press,2008:188―189.(in Chinese)
[9]白国良,秦福华.型钢混凝土原理与设计[M].上海:上海科学技术出版社,2002:152.Bai Guoliang,Qin Fuhua.Principle and Design of Steel Reinforced Concrete[M].Shanghai:Shanghai Science and Technology Press,2002:152.(in Chinese)
[10]聂建国,胡红松,李盛勇,等.方钢管混凝土暗柱内嵌钢板-混凝土组合剪力墙抗震性能试验研究[J].建筑结构学报,2013,34(1):52―60.Nie Jianguo,Hu Hongsong,Li Shengyong,et al.Experimental study on seismic behavior of steel plate reinforced concrete composite shear walls with square CFST concealed columns[J].Journal of Building Structures,2013,34(1):52―60.(in Chinese)
[11]薛伟辰,杨新磊,王蕴,等.现浇柱叠合梁框架节点抗震性能试验研究[J].建筑结构学报,2008,29(6):9―17.Xue Weichen,Yang Xinlei,Wang Yun,et al.Expermental study on seismic behavior of different type of frame connections with composite beams and cast-in-place columns[J].Journal of Building Structures,2008,29(6):9―17.(in Chinese)