Steel-Cylinder Yielding Analysis of PCCP with Broken Wires

摘要：

　　The prestressing wires of prestressed concrete cylinder pipe (PCCP) provide pipe wall with compressive stress to resist internal pressure.Broken wires may cause yielding of steel cylinder and increase the risk of pipe failure with time.In order to reveal the mechanism of steel-cylinder yielding in PCCP with broken wires,a simplified model is developed and the maximum number of broken wires to preclude exceeding limit stress in steel cylinder can be determined conveniently by the equations derived in this paper.Verification analysis shows that the solution of simplified model agrees well with that of nonlinear finite element analysis.By comparing the calculated maximum number of broken wires with the detected actual number of broken wires,steel-cylinder yielding in prestress loss zone can be predicted,thus aiding condition assessment of PCCP.

关键词： PCCP broken wires yielding steel cylinder

作者: Ri You Hongbo Gong

作者单位: Materials and Structural Engineering Department,Nanjing Hydraulic Research Institute,Nanjing,210024,China;State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering,Nanjing Hydraulic Research Institute,Nanjing,210024,China

会议类型: 国际会议

会议名称: the 2012 2nd International Conference on Frontiers of Manufacturing Science and Measuring Technology (第二届制造科学与检测技术国际会议(ICFMM 2012))

会议地点: 西安

会议语种:英文

页码: 819-823

在线出版日期: 2012-06-12（万方平台首次上网日期，不代表论文的发表时间）