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方钢管混凝土柱的延性系数
引用本文:韩林海,陶忠.方钢管混凝土柱的延性系数[J].地震工程与工程振动,2000,20(4):56-65.
作者姓名:韩林海  陶忠
作者单位:福州大学土木建筑工程学院,福州 350002
基金项目:霍英东教育基金会资助!(0501064)
摘    要:在空钢管中填充混凝土可以避免或延缓钢管早地发生局部屈曲,可以有效地提高构件的延性,从而增强构件的抗震性能,本文研究钢管混凝土桩的延性性能,本文首先提出方钢管混凝土柱延性系数的计算方法,然后,在大规模参数分析结构的基础上,考察了轴压比,长细比,含钢率,钢材屈服极限和混凝土抗压强度等参数对延性系数的影响规律,本文的研究成果可供有关工程实践参考。

关 键 词:方钢管混凝土柱  约束效应系数  恢复力模型  轴压比  延性系数
文章编号:1000-1301(2000)04-0056-10

Ductility coefficient of concrete filled steel tubular columns with square sections
HAN Lin-hai,Tao Zhong.Ductility coefficient of concrete filled steel tubular columns with square sections[J].Earthquake Engineering and Engineering Vibration,2000,20(4):56-65.
Authors:HAN Lin-hai  Tao Zhong
Abstract:Concrete eliminates .or delays the local buckling of steel hollow sections, and increases the ductility of the section significantly. An efficient ductility of composite sections is very important especially under earthquake loading. One method was used to quantify the ductility coefficient of concrete filled steel tubular columns with square sections. The main objectives of this paper were twofold: firstly, to describe the determination method of the ductility coefficient of concrete filled steel tubular columns with square sections, and secondly, to analyze the influence of several parameters, such as the slenderness ratio, compression ratio, sectional steel ratio, the concrete strength and the steel yield stress on the ductility coefficient. The results in this paper may be a reference for practical engineering.
Keywords:concrete filled steel tube  constrainging coefficient restoring force model  axial compression ratio  ductility coefficient
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