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力学与实践 ›› 2009, Vol. 31 ›› Issue (6): 30-34.doi: 10.6052/1000-0879-2008-418

• 应用研究 • 上一篇    下一篇

基于有限元法的钢管混凝土等效剪切模量研究

屠永清 王泗军   

  1. 北京航空航天大学土木工程系 北京100083
  • 收稿日期:2008-08-27 修回日期:2009-02-05 出版日期:2009-12-10 发布日期:2009-12-08

A STUDY ON SHEAR MODULUS OF CONCRETE FILLED STEEL TUBE BASED ON FINITE ELEMENT ANALYSIS

  • Received:2008-08-27 Revised:2009-02-05 Online:2009-12-10 Published:2009-12-08

摘要: 提出了一种采用有限元法计算钢管混凝土受剪时等效剪切模量的方法,并对该方法 的正确性进行了验证;在分析了各种因素对等效剪切模量影响的基础上,给出了圆形和方形 钢管混凝土受剪时等效剪切模量的简化计算公式;与其他得到钢管混凝土剪切模量的方法进 行比较,分析了结果不同的原因,表明对钢管混凝土采用有限元计算研究其等效剪切模量的 方法更为合理.

关键词: 钢管混凝土,等效剪切模量,有限元法

Abstract: The determination of equivalent shear modulus of concrete filled steel tube (CFST) by experiment is very difficult. A method based on finite element analysis is proposed in this paper to numerically calculate the shear modulus. Based on the analysis of various factor, regressive formulas for equivalent shear modulus of concrete filled circular steel tube and concrete filled square steel tube are obtained. Comparisons of different methods for shear modulus of CFST are made and their different results are discussed. The results show that the method of finite element analysis is more reasonable with respect to the equivalent shear modulus of composite members.

Key words: concrete filled steel tube,equivalent shear modulus,finite element analysis