轴压比对RC框架结构“强柱弱梁”屈服机制的影响研究

英文篇名：Study on Influences of Axial Compression Ratios on the “Strong Column-Weak Beam” Yield Mechanism of RC Frame Structures
中文刊名：北京建筑大学学报
英文刊名：Journal of Beijing University of Civil Engineering and Architecture
作者：张喆 ; 戚承志
英文作者：Zhang Zhe ; Qi Chengzhi ; School of Civil and Traffic Engineering ; Beijing University of Civil Engineering and Architecture
中文关键词：轴压比 ; 框架结构 ; 强柱弱梁
英文关键词：axial compression ratios ; frame structures ; strong column-weak beam
出版日期：2015-03-31
机构：北京建筑大学土木与交通工程学院;
年：2015
期：01
出版单位：北京建筑大学学报

摘要

轴压比对RC框架结构"强柱弱梁"的实现有重要的影响,之前大量研究只是表明,高轴压比不能有效地实现"强柱弱梁"屈服机制.现有文献并未给出现行规范下实际可供参考的轴压比取值范围,以保证结构更好地实现强柱弱梁屈服机制.利用ABAQUS,通过改变混凝土等级的方法,不仅能够实现不同柱轴压比,还能保证梁、柱刚度比不发生变化.采用弹塑性动力时程分析方法,更有效地分析轴压比的影响,提出可供参考的轴压比取值范围建议,保证结构"强柱弱梁"屈服机制的实现,为工程设计提供一定的参考.
The values of axial compression ratios have remarkable effect on the realization of the "weak beam-strong column"mechanism. Plenty of studies revealed that high limit axial compression ratio values couldn't effectively guarantee the realization of "strong column-weak beam " yield mechanism. The available literature did not provide axial reference compression ratios value range for engineering practice.With the aid of the structural analysis program ABAQUS,by varying concrete grade,different column axial compression ratios without changing stiffness ratios are got. By using elastic-plastic dynamic time history analysis,the axial compression ratios value range is analysed effectively and the realization of"weak beam-strong column"mechanism can be guaranteed. The present study may provide reference for engineering design.

引文

[1]叶列平,曲哲,马千里,等.从汶川地震中框架结构震害谈“强柱弱梁”屈服机制的实现[J].建筑结构,2008,38(11):52-59
    [2]GB 50011—2001,建筑抗震设计规范[S]
    [3]GB 50011—2010,建筑抗震设计规范[S]
    [4]王素裹,韩小雷,季静.轴压比对RC框架实现“强柱弱梁”的影响研究[J].世界地震工程,2010,26(3):96-101
    [5]阳波.钢筋混凝土框架结构“强柱弱梁”机制影响因素研究[D].湖南:湖南大学,2012
    [6]袁贤讯,易伟建.钢筋混凝土框架“强柱弱梁”及轴压比限值的概率分析[J].重庆建筑大学学报,2000,22(3):64-68