中文核心期刊
CSCD来源期刊
中国科技核心期刊
RCCSE中国核心学术期刊

重庆交通大学学报(自然科学版) ›› 2007, Vol. 26 ›› Issue (6): 7-9.

• • 上一篇    下一篇

钢管砼偏心受压构件的徐变分析

余武军,顾安邦,陈宇峰,李博   

  1. 重庆交通大学土木建筑学院,重庆 400074
  • 收稿日期:2006-08-29 出版日期:2007-12-15 发布日期:2015-01-22
  • 作者简介:余武军(1981—),男,湖北天门人,硕士生,主要从事大跨钢管砼结构理论的研究.E-mail:lomanoo71980@yahoo.com.cn.
  • 基金资助:
    交通部西部建设科技资助项目(2003318814202)

Study on Creep Effect of Eccentrically Compressed CFST Members

YU Wu-jun,GU An-bang,CHEN Yu-feng,LI Bo   

  1. School of Civil Engineering&Architecture,Chongqing Jiaotong University,Chongqlng 400074,China
  • Received:2006-08-29 Online:2007-12-15 Published:2015-01-22

摘要: 钢管砼结构徐变由于物理状况上封闭、干硬性、养生时不浇水,受力上卸载而低于普通砼的徐变,由于徐变导 致的钢管和砼的应力?重分布十分明显而不可忽视,为了有效计算核心砼徐变导致的重分布应力,在推导轴心受压 构件徐变公式的基础上,结合大小偏心受压构件的受力特点,偏安全地考虑最大纤维处的徐变,根据弹性理论及叠 加原理推导了钢管砼构件徐变系数的一般计算公式,并测试了轴心受压和偏心受压结构的徐变应变和收缩应变,经 比较,徐变计算比较吻合,验证了理论分析.

关键词: 钢管砼, 收缩徐变, 理论分析, 试验研究, 应力重分布

Abstract: The creep-shrinkage effect of CFST is different from that of reinforced concrete because of its containment,stiff consistency and not casting water during curing period as well as its unloading.The stress recontribution of CFST is significant and must not be ignored.In order to calculate the redistributed stress effectively,according to the elastic creep theory and the principle of superposition,one general formula of analytical model for CFST creep function has been suggested based on the theory analysis on the creep-shrinkage effect of axis compression component[1].One creep model and one compensation model were made.The strain tests results met the theory analysis,and proved the formula.

Key words: CFST, creep-shrinkage efect, theoretical analysis, test research, stress redistribution

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