Journal of South China University of Technology (Natural Science Edition) ›› 2005, Vol. 33 ›› Issue (1): 21-26.

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Analysis of Shrinkage Creep Eccentrically-Compressed M embers of Arbitrary Cross-Section Considering Construction Process

Deng Zhi-heng  Qin Rong  Wang Xiao-yan   

  1. Civil Engineering College,Guangxi Univ.,Nanning 530004,Guangxi,China
  • Received:2004-03-24 Online:2005-01-25 Published:2005-01-25
  • Contact: 邓志恒(1963-),男,博士,教授,主要从事混凝土结构方面的研究 E-mail:dengzh@gxu.edu.cn
  • About author:邓志恒(1963-),男,博士,教授,主要从事混凝土结构方面的研究
  • Supported by:

    国家自然科学基金资助项目(5006811);广西自然科学基金资助项目(0135049)

Abstract:

The formulas to calculate the shrinkage creep of arbitrary cross-section eccentrically-compressed men-bers were deduced in this paper,during which,besides the process of construction,the influences of the axial force variation,the concrete elasticity modulus variation and the change of circumstance and the reinforcement ratio on the stress redistribution in the cross-section were considered,and the median coefficients of concrete creep and con-crete elastic modulus were employed.The track test of the shrinkage creep in an actual project was then carried out.The results indicate that there is great difference between the calculated results with and without considering the construction process,that the theoretically calculated results accord well with the practical ones,and that the proposed calculation form ulas are in good a~eement with the practical bearing model,thus providing references to the design of actual projects.

Key words: construction process, eccentrically-compressed member, shrinkage creep