EXPERIMENTAL AND THEORETICAL INVESTIGATIONS OF FLEXURAL BEHAVIOR OF NEW TYPE PRESTRESSED CONCRETE PIPE PILE WITH COMPOUND UNPRESTRESSED REINFORCEMENT

摘要：

This paper presents the concept of a new type Unprestressed Reinforcement Compounded Prestressed Concrete Pipe Pile (URC-PCPP). In the URC-PCPP,in order to increase the bending capacity and ductility,some unprestressed HRB400 steel bars are added to the prestressed concrete pipe pile,forming horizontal loading concrete compound sections. Five full scale URC-PCPPs and two full scale common prestressed concrete pipe piles,which were used for comparison,were designed and fabricated. The standard bending tests on the specimens were carried out. The test results show that the URC-PCPPs possess good flexure properties. Based on the data from the tests and the current concrete code,the formulas for the crack moment were suggested and the design equations of flexural capacity for the URC-PCPPs as well as the formulas of ultimate moment for the factory checkout of the pipe piles were derived. The numerical results agree well with the test data,satisfying to the design requirement of the pipe pile. The results provide a theoretical basis for the compilation of standard drawings of the URC-PCPPs.

关键词： New type prestressed concrete pipe pile Compound reinforcement Flexural behaviour ductility Standard bending test

作者: Xin-Ling Wang Hui Qian Tong-He Zhou Hong-Wei Duan

作者单位: School of Civil Engineering,Zhengzhou University,Zhengzhou 450002,P.R. China Zhengzhou University Multi-functional Design and Research Academy,Zhengzhou 450002,P.R. China

会议类型: 国际会议

会议名称: The Eleventh International Symposium on Structural Engineering(第十一届结构工程国际研讨会)

会议地点: 广州

会议语种:英文

页码: 420-425

在线出版日期: 2010-12-01（万方平台首次上网日期，不代表论文的发表时间）