摘要
本文报道了在不同初始应力下预应力高强钢丝的松弛试验及考虑预应力混凝土构件中收缩徐变影响的变长度松弛试验结果,长期松弛试验已达12年,给出了长期松弛值的推算方法及预应力混凝土构件中考虑收缩徐变影响的钢丝松弛分析方法,从而为预应力混凝土结构的长期性能分析提供了依据.
This paper gives an account of the experimental study on the stress relaxation in prestressed wires. The maximum duration of loading for wires of different initial stresses exceeded 12 years. The influence of shrinkage and creep of concrete on the relaxation of wires in the prestressed concrete member is discussed. Based on the results of the experiment, this paper presents a method to predict long-term relaxation, from short-term experiment.
出处
《土木工程学报》
EI
CSCD
北大核心
1997年第6期41-46,共6页
China Civil Engineering Journal
