方钢管混凝土柱的延性系数  

Ductility coefficient of concrete filled steel tubular columns with square sections

作　　者：韩林海[1] 陶忠[1] 

机构地区：[1]福州大学土木建筑工程学院,福州350002

出　　处：《地震工程与工程振动》2000年第4期56-65,共10页Earthquake Engineering and Engineering Dynamics

基　　金：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过早地发生局部屈曲，可以有效地提高构件的延性，从而增强构件的抗震性能。本文研究方钢管混凝土柱的延性性能。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果的基础上，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。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.

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 

分 类 号：TU392.3[建筑科学—结构工程] TU398