CREEP EFFECT OF TWICE PRESTRESSED CONCRETE BEAM

摘要：

This paper firstly introduced the concept of twice prestressed concrete beam, and then formulae were derived to calculate creep strain and deformation of this beam at any time based on Age-adjusted Effective Modulus Method, in which interaction between concrete creep and prestress loss has been taken into account. Finally, a test beam was fabricated to study the creep effect of twice prestressed concrete beam. It is found that the results calculated by formulae were in good agreement with test data from experiment, verifying the correctness of formulae derived by this paper.

关键词： Prestressed concrete twice prestressed creep stress re-distribution

作者: Jian-Jun Yang Xu-Dong Shao Ya-Dong Zhou

作者单位: China Zhongtie Major Bridge Reconnaissance & Design Institute Co.,Ltd.,Wuhan 430050,P. R. China College of Civil Engineering,Hunan University,Changsha 410082,P.R. China

会议类型: 国际会议

会议名称: The 4th Internatiuonal Symposium on Lifetime Engineering of Civil Infrastructure(第四届土木工程结构生命周期国际学术研讨会)

会议地点: 长沙

会议语种:英文

页码: 832-836

在线出版日期: 2009-10-26（万方平台首次上网日期，不代表论文的发表时间）