不同加载路径对钢筋混凝土L形柱抗震性能的影响
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摘要
为了进一步探讨复杂加载路径下钢筋混凝土L形柱的受力性能,采用基于有限单元柔度法纤维模型梁柱单元,对忽略剪切和扭转影响的钢筋混凝土L形柱在不同加载路径下的抗震性能进行了计算机模拟分析,研究了不同加载路径对钢筋混凝土L形柱承载力、延性、累积滞回耗能等的影响。结果表明,现有钢筋混凝土L形柱抗震性能评定方法应作适当调整,以考虑加载路径对评定结果的影响。
To probe further into seismic behavior of L-shaped reinforced concrete columns under complex load paths,L-shaped reinforced concrete columns without considering the effects of shear and torsion are analyzed under different load paths by using the fiber-model beam-column element on the basis of the finite element flexibility method.The effects of different load paths on the strength,the ductility and the cumulative hysteretic energy dissipation of L-shaped reinforced concrete columns are studied.The results show that the existing method for estimating the seismic behavior of L-shaped reinforced concrete columns should be relevantly adjusted to consider the effects of load paths.
To probe further into seismic behavior of L-shaped reinforced concrete columns under complex load paths,L-shaped reinforced concrete columns without considering the effects of shear and torsion are analyzed under different load paths by using the fiber-model beam-column element on the basis of the finite element flexibility method.The effects of different load paths on the strength,the ductility and the cumulative hysteretic energy dissipation of L-shaped reinforced concrete columns are studied.The results show that the existing method for estimating the seismic behavior of L-shaped reinforced concrete columns should be relevantly adjusted to consider the effects of load paths.
引文
[1]邱法维,李文峰,潘鹏,等.钢筋混凝土柱的双向拟静力实验研究[J].建筑结构学报,2001,22(5):26-31.
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[5]李杰,吴建营,周德源,等.L形和Z形宽肢异形柱低周反复荷载试验研究[J].建筑结构学报,2002,23(1):9-15.
[6]胡国振,曹万林,周明杰,等.钢筋混凝土带暗柱L形柱抗震性能试验研究[J].世界地震工程,1999,15(4):32-37.
[7]JGJ149-2006,混凝土异形柱结构技术规程[S].北京:中国建筑工业出版社,2006.
[8]黄宗明,陈滔.基于有限单元柔度法和刚度法的非线性梁柱单元比较研究[J].工程力学,2003,20(5):24-31.
[9]陈滔,黄宗明.基于有限单元柔度法的钢筋混凝土空间框架非弹性地震反应分析[J].建筑结构学报,2004,25(2):79-84.
[10]陈滔.基于有限单元柔度法的钢筋混凝土框架三维非弹性地震反应分析[D].重庆:重庆大学,2003.
[11]Filippou F C,Popov E P,Bertero V V.Effects of bond deterioration on hysteretic behavior of reinforced concrete joints[R].EERC Report 83/19,Berkeley,CA:University of California,1983.
[12]陈娟,陈滔,黄宗明.钢筋混凝土L形柱分析时平截面假定的适用范围[J].地震工程与工程振动,2006,26(1):111-115.
[2]康洪震,江见鲸.不同加载路径下钢筋混凝土框架柱抗震性能的试验研究[J].土木工程学报,2003,36(5):71-75.
[3]Bousias S N,Verzeletti G,Fardis MN,et al.Load-path effects in column biaxial bending with axial force[J].Journal of Engineering Mechan-ics.,ASCE,1995,121(5):596-605.
[4]曹万林,王光远,吴建有,等.不同方向周期反复荷载作用下L形柱的性能[J].地震工程与工程振动,1995,15(1):67-72.
[5]李杰,吴建营,周德源,等.L形和Z形宽肢异形柱低周反复荷载试验研究[J].建筑结构学报,2002,23(1):9-15.
[6]胡国振,曹万林,周明杰,等.钢筋混凝土带暗柱L形柱抗震性能试验研究[J].世界地震工程,1999,15(4):32-37.
[7]JGJ149-2006,混凝土异形柱结构技术规程[S].北京:中国建筑工业出版社,2006.
[8]黄宗明,陈滔.基于有限单元柔度法和刚度法的非线性梁柱单元比较研究[J].工程力学,2003,20(5):24-31.
[9]陈滔,黄宗明.基于有限单元柔度法的钢筋混凝土空间框架非弹性地震反应分析[J].建筑结构学报,2004,25(2):79-84.
[10]陈滔.基于有限单元柔度法的钢筋混凝土框架三维非弹性地震反应分析[D].重庆:重庆大学,2003.
[11]Filippou F C,Popov E P,Bertero V V.Effects of bond deterioration on hysteretic behavior of reinforced concrete joints[R].EERC Report 83/19,Berkeley,CA:University of California,1983.
[12]陈娟,陈滔,黄宗明.钢筋混凝土L形柱分析时平截面假定的适用范围[J].地震工程与工程振动,2006,26(1):111-115.
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