ANALYSIS ON PRESTRESS LOSS CAUSED BY FRICTION IN CURVED DUCT IN THE DESIGN OF PRESTRESSED CONCRETE STRUCTURE
This paper aims at the problem of prestress loss caused by friction between prestressed tendon and curved duct for the design of prestressed concrete structure. Formulas of normal pressure between prestressed tendon and curved duct and tension of prestressed tendon are derived based on the Hertz contact theory. And a series of experiments have been done to explore the distribution of the normal stress between prestressed tendon and curved duct. And also the results come from experiments, derived formulas and current norms are compared in three cases. The research fruit shows that current norms are unreasonable and derived formulas are effective for calculating prestress loss caused by friction between prestressed tendon and curved duct.
Prestress loss curved duct prestressed concrete structure friction loss prestressed tendon
Kai-Yin Zhang Chen Cheng
School of transportation,Wuhan University of Science and Technology,Wuhan 430063,P. R.China School of transportation,Wuhan University of Science and Technology,Wuhan 430063,P. R.China The Rese
国际会议
长沙
英文
701-705
2009-10-26（万方平台首次上网日期，不代表论文的发表时间）