钢-混凝土组合梁与混凝土柱节点的抗震性能试验研究
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摘要
基于端板螺栓连接的钢-混凝土组合梁与混凝土柱节点的低周反复荷载试验,对其受力过程、破坏形式、滞回曲线、骨架曲线、延性等抗震性能进行了较为深入的研究与分析。结果表明:端板螺栓连接的钢-混凝土组合梁与混凝土柱节点试件的滞回曲线呈梭形,且较为丰满,耗能能力强;组合梁横向配筋率及其配筋形式、组合梁剪力连接度对节点的承载力影响并不显著,但对节点的延性有显著的影响。横向配筋率的增大及横向配筋为封闭式可提高节点的变形能力,剪力连接度越高变形能力越强。
Based on experiments of endplate bolted connection of the SC beam and RC column specimen under cyclic loading,the failure pattern,hysteretic loops,skeleton curves and ductility were studied.Researches show that endplate bolted connection of the SC beam and RC column specimen had enough energy dissipation capacity and stable hysteretic characteristic.Yielding capacity and ultimate capacity of this connection are less influenced by the rations of transverse steel and the arrangement of steel,and the degree of shear connection of composite beam,while the ductility is influenced by these two parameters obviously.The increase of the rations of transverse steel add to the ductility of connections;and the increase of degree of shear connection lead to stronger deformability.
Based on experiments of endplate bolted connection of the SC beam and RC column specimen under cyclic loading,the failure pattern,hysteretic loops,skeleton curves and ductility were studied.Researches show that endplate bolted connection of the SC beam and RC column specimen had enough energy dissipation capacity and stable hysteretic characteristic.Yielding capacity and ultimate capacity of this connection are less influenced by the rations of transverse steel and the arrangement of steel,and the degree of shear connection of composite beam,while the ductility is influenced by these two parameters obviously.The increase of the rations of transverse steel add to the ductility of connections;and the increase of degree of shear connection lead to stronger deformability.
引文
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[2]Nethercot D A.Design of composite connections[J].TheStructural Engineer,1995,73(4):218-219.
[3]Liew J Y R,Teo TH,Shanmugam N E,Yu C H.Testingof steel-concrete composite connections and appraisal ofresults[J].Journal of Constructional Steel Research,2000,56(2):117-150.
[4]毛炜烽,伍云天,肖岩等.高强螺栓连接钢梁-混凝土柱组合节点的抗震性能[J].工业建筑,2005,35(11):1-4.
[5]聂建国著.钢-混凝土组合梁结构——试验、理论与应用[M].北京:科学出版社,2005.
[6]唐九如编著.钢筋混凝土框架节点抗震[M].南京:东南大学出版社,1988.
[7]胡夏闽,高华杰,杨丽.角钢支托钢-混凝土组合节点的试验研究[J].哈尔滨工业大学学报,2005,37(增刊):333-337.
[8]申红侠,顾强.钢梁-钢筋混凝土柱节点的研究及应用概况[J].建筑钢结构进展,2004,6(2):33-36.
[9]张莉若,王明贵.钢-混凝土组合结构梁柱节点承载力试验研究[J].建筑科学,2003,19(5):16-25.
[10]陈红媛,房贞政.钢混凝土组合柱-钢梁结构中柱节点受力性能研究[J].福州大学学报(自然科学版),2003,31(4):460-465.
[11]刘立新,刘家慧.钢管混凝土梁柱节点受力性能的试验研究[J].郑州大学学报(工学版),2003,24(3):32-37.
[12]房贞政,陈伟恩,郑则群.劲性柱-钢梁节点拟静力试验研究[J].地震工程与工程振动,2003,23(2):45-50.
[13]马云昌,吕西林.钢筋混凝土板柱节点的抗震性能研究[J].建筑结构学报,2001,22(4):49-54.
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