钢骨超高强混凝土柱-混凝土梁节点恢复力模型
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摘要
为了解地震作用下钢骨超高强混凝土柱-混凝土梁节点的动力特性,制作12榀钢骨超高强混凝土柱-混凝土梁节点进行低周反复加载试验,观察记录试件的受力过程。基于对试验结果的分析,建立适用于钢骨超高强混凝土柱-混凝土梁节点的恢复力模型,该模型包括基于计算的骨架曲线模型及基于试验现象的滞回规则。建议的骨架曲线模型与试验骨架曲线吻合程度较高,直接描述了试件的受力过程。由建议的滞回规则计算得到的计算滞回曲线与试验滞回曲线大致相同,较好地反映了低周反复荷载作用下钢骨超高强混凝土柱-混凝土梁节点的滞回性能。所建议的恢复力模型可供钢骨超高强混凝土构件及其结构非线性地震反应分析应用。
To understand the dynamic characteristics of steel reinforced ultra high strength concrete column and concrete beam joints, twelve specimens are fabricated and tested under low cyclic load, loading process was observed and recorded. Restoring force model of steel reinforced ultra high strength concrete column and concrete beam joints is established according to the test, which includes models of skeleton curve and hysteretic rule. The models of skeleton curve agree well with the experimental ones, which directly describe loading process of specimens. The hysteretic curves calculated from presented hysteretic rule have a good agreement with experimental ones, and their trends are roughly identical with experimental ones. The model can be used for the nonlinear seismic response analysis of SRC-RC structures.
To understand the dynamic characteristics of steel reinforced ultra high strength concrete column and concrete beam joints, twelve specimens are fabricated and tested under low cyclic load, loading process was observed and recorded. Restoring force model of steel reinforced ultra high strength concrete column and concrete beam joints is established according to the test, which includes models of skeleton curve and hysteretic rule. The models of skeleton curve agree well with the experimental ones, which directly describe loading process of specimens. The hysteretic curves calculated from presented hysteretic rule have a good agreement with experimental ones, and their trends are roughly identical with experimental ones. The model can be used for the nonlinear seismic response analysis of SRC-RC structures.
引文
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[3]卢文胜,韩建平,吕西林,等.法门寺合十舍利塔结构整体模型振动台试验研究[J].建筑结构学报,2011,32(3):90-98(Lu Wensheng,Han Jianping,Lu Xilin,et al.Shaking table model test on Palms Together Dagoba at Famen Temple[J].Journal of Building Structures,2011,32(6):90-98(in Chinese))
[4]郭子雄,杨勇.恢复力模型研究现状以及存在问题[J].世界地震工程,2004,20(4):47-51(Guo Zixiong,Yang Yong.State of the art of restoring force models for RC structure[J].World Earthquake Engineering,2004,20(4):47-51(in Chinese))
[5]陈宗平,薛建阳,苏益声,等.反复荷载作用下型钢混凝土L形柱的受力性能[J].地震工程与工程抗震,2009,29(6):121-129(Chen Zongping,Xue Jianyang,Su Yisheng,et al.Mechanical behavior of steel reinforced concrete L-shaped column under low cyclic reversed loading[J].Journal of Earthquake Engineering Vibration,2009,29(6):121-129(in Chinese))
[6]胡立黎,郑宏,肖锋.钢筋混凝土深梁填充钢框架的恢复力模[J].土木工程学报,2010,43(9):49-54(Hu Lili,Zheng Hong,Xiao Feng.Restoring force model of steel frames infilled with the reinforced concrete deep beam[J].China Civil Engineering Journal,2010,43(9):49-54(in Chinese))
[7]高向宇,张慧,杜海燕,等.防屈曲支撑恢复力的特点及计算模型研究[J].工程力学,2011,28(6):19-28(Gao Xiangyu,Zhang Hui,Du Haiyan,et al.Study on characterization and modeling of buckling-restrained brace[J].Engineering Mechanics,2011,28(6):19-28(in Chinese))
[8]钱稼茹,刘明学.FRP-混凝土-钢双壁空心管柱塑性铰区弯矩-转角恢复力模型[J].工程力学,2008,25(11):48-52(Qian Jiaru,Liu Mingxue.Experimental investigation of FRP-concrete-steel double-skin tubular stubs under axial compressive loading[J].Engineering Mechanics,2008,25(11):48-52(in Chinese))
[9]JGJ 101—1996建筑抗震试验方法规程[S].北京:中国建筑工业出版社,1997(JGJ 101—1996 Specification of testing methods for earthquake resistant buildings[S].Beijing:China Architecture&Building Press,1997(in Chinese))
[10]曾磊,徐成祥,郑山锁,等.型钢高强高性能混凝土框架节点P-Δ恢复力模型[J].武汉理工大学大学学报,2012,34(9):104-108(Zeng Lei,Xu Chengxiang,Zheng Shansuo,et al.Research on restoring force model of SRHSHPC frame joints[J].Journal of Wuhan University of Technology,2012,34(9):104-108(in Chinese))
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