无粘结预应力混凝土结构的工程特性

ENGINEERING PROPERTY OF UNBONDED PRESTRESSED CONCRETE STRUCTURE

在综述无粘结预应力混凝士结构工程实践的基础上,指出尚需解决的一些实际问题。介绍了作者有针对性地开展的研究工作及取得的主要成果:(1)UPC框架模型的试验研究;(2)构件的M-φ滞回曲线;(3)UPC结构的抗震性能;(4)建议放宽UPC构件应力限制系数。对这种结构的主要工程特性进行了分析和归纳:即①UPC楼盖结构的特点;②LIPC相对PC的主要优缺点;③UPC框架结构设计的注意事项。

Based on engineering practices of unbonded prestressed concrete (UPC), some questions are discussed. Main results about experiment research by writer are introduced. 1)Model test for UPC frame; 2)M -Φ curve of member; 3)Earthquake property of UPC frame; 4)Design suggest to increase stress coefficient of concrete crack. Engineering property of UPC is analyzed and induced. 1)Characteristic of UPC floor system; 2) Advantage and defect of UPC than PC; 3)Key to structure design of UPC frame.