组合连梁与墙肢节点恢复力模型试验研究
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摘要
为了建立平面内钢-混凝土组合梁与混凝土墙肢节点的恢复力模型,进行2个足尺平面内钢-混凝土组合连梁与混凝土墙肢节点的低周反复荷载试验,研究节点的破坏机理,得到节点的低周反复荷载作用下的滞回曲线。利用统计分析软件SPSS,采用对平面内钢-混凝土组合梁与混凝土墙肢节点滞回曲线的回归分析,考虑强度和刚度退化规律,建立平面内钢-混凝土组合梁与混凝土墙肢节点的恢复力模型。实验结果表明:平面内钢-混凝土组合梁与混凝土墙肢节点的低周反复荷载试验滞回曲线呈弓形,骨架曲线呈倒"Z"形,平面内钢-混凝土组合梁与混凝土墙肢节点有较好的延性和较强的耗能能力。
In order to found restoring force models of steel-concrete composite coupling beam and concrete pier(SCBCP) joints in plane, the experiments on 2 full-scale specimens of SCBCP joints were conducted under low reversed cyclic loading.By means of the experiments, failure patterns were researched, and hysteretic loops of the joints at the end of beams under low-reversed cyclic loading were acquired.According to the regressive analysis of hysteretic loops of SCBCP joints in plane through SPSS software of statistical analyzing, restoring force models of SCBCP joints in plane were established considering the strength and the stiffness degenerated rules.The experimental results show that hysteretic loops of SCBCP joints are in a bow pattern, and the outer diaphragms of the hysteretic loops of the joints are in a opposite"Z"pattern.As a result, energy dissipation and ductility of SCBCP joints at the end of beams under low reversed cyclic loading are better.
In order to found restoring force models of steel-concrete composite coupling beam and concrete pier(SCBCP) joints in plane, the experiments on 2 full-scale specimens of SCBCP joints were conducted under low reversed cyclic loading.By means of the experiments, failure patterns were researched, and hysteretic loops of the joints at the end of beams under low-reversed cyclic loading were acquired.According to the regressive analysis of hysteretic loops of SCBCP joints in plane through SPSS software of statistical analyzing, restoring force models of SCBCP joints in plane were established considering the strength and the stiffness degenerated rules.The experimental results show that hysteretic loops of SCBCP joints are in a bow pattern, and the outer diaphragms of the hysteretic loops of the joints are in a opposite"Z"pattern.As a result, energy dissipation and ductility of SCBCP joints at the end of beams under low reversed cyclic loading are better.
引文
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[3]王敏,曹万林,张建伟.组合剪力墙的抗震研究与发展[J].地震工程与工程振动,2007,27(5):80-87.WANG Min,CAO Wan-lin,ZHANG Jian-wei.Seismic research and development in composite shear walls[J].Journal of Earthquake Engineering and Engineering Vibration,2007,27(5):80-87.
[4]ZHAO Qiu-hong,Astaneh-Asl A.Cyclic behavior of traditional and innovative composite shear walls[J].Journal of Structural Engineering,2004,130(2):271-284.
[5]Hassan M,El-Tawil S.Inelastic dynamic behavior of hybrid coupled walls[J].Journal of Structural Engineering,2004,130(2):285-296.
[6]Gong B,Shahrooz B M.Steel-concrete composite coupling beams:Behavior and design[J].Engineering Structures,2001,23(11):1480-1490.
[7]陆铁坚,余志武,蒋友良.高层建筑筒体结构三维静力分析的改进条元法[J].中南大学学报:自然科学报,2004,35(1):133-137.LU Tie-jian,YU Zhi-wu,JIANG You-liang.Improved finite strip method of three-dimensional static analysis of tall building framed tube and tube-in-tube structure[J].Journal of Central South University:Science and Technology,2004,35(1):133-137.
[8]白国良,楚留声,李晓文.高层框架-核心筒结构抗震防线问题研究[J].西安建筑科技大学学报:自然科学版,2007,39(4):445-450.BAI Guo-liang,CHU Liu-sheng,LI Xiao-wen.The research on the problem of earthquake fortification line in high-rise frame-core wall structures[J].Journal of Xi’an University of Architecture and Technology:Natural Science Edition,2007,39(4):445-450.
[9]徐培福,戴国莹.超限高层建筑结构基于性能抗震设计的研究[J].土木工程学报,2005,38(1):1-10.XU Pei-fu,DAI Guo-ying.Performance-based seismic design of tall building structures beyond the code-specification[J].China Civil Engineering Journal,2005,38(1):1-10.
[10]贺国京,阎奇武,袁锦根.工程结构弹塑性地震反应[M].北京:中国铁道出版社,2005.HE Guo-jing,YAN Qi-wu,YUAN Jin-gen.Elastic-plastic seismic response of engineering structures[M].Beijing:China Railway Press,2005.
[11]唐莹莹.平面内钢-混凝土组合连梁与混凝土墙肢节点恢复力模型试验研究与分析[D].长沙:中南大学土木建筑学院,2007.TANG Ying-ying.Experimental study and analysis on the restoring force model of composite coupling beam and pier joints in the plane[D].Changsha:School of Civil and Architectural Engineering,Central South University,2007.
[12]JGJ101—96,建筑抗震试验方法规程[S].JGJ101—96,Specification of testing methods for earthquake resistant building[S].
[13]薛素铎,赵均,高向宇.建筑抗震设计[M].北京:清华大学出版社,2003.XUE Su-duo,ZHAO Jun,GAO Xiang-yu.Seismic design of buildings[M].Beijing:Tsinghua University Press,2003.
[14]梁柱节点专题组.劲性钢筋混凝土梁柱节点性能及受剪承载力[C]//混凝土结构研究报告选集.北京:中国建筑工业出版社,1994:502-518.Special Topic Group of Beam-column Joints.Behavior and shear strength of steel-reinforced concrete beam-column joints[C]//Selected Works of Concrete Structure Research.Beijing:China Architecture&Building Press,1994:502-518.
[15]江见鲸,李杰,金伟良.高等混凝土结构理论[M].北京:中国建筑工业出版社,2007.JIANG Jian-jing,LI Jie,JIN Wei-liang.Advanced theory of concrete structures[M].Beijing:China Architecture&Building Press,2007.
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