Simulation Method for Pre-stressing tendon in Post-tensioned PC Bridge: Longitudinal Distribution Mode
Based on comparatively sophisticated prestressing loss method in current code, the simplified algorithm for virtual frictional loss function was put forward in a universal way. By means of obtained stress datum on strand, subordinated mode for its effective prestress distribution along longitudinal direction was able to be determined. As regards effective prestress for steel tendons with complicated geometry pattern, its regularities of distribution could be simulated after the recognition on nominal coefficients of prestress losses. In order to improve practicability of the research, analytical module was programmed on special software platform. By adopting on full-length strand of a three-span continuous beam bridge, closing verification was got eventually under the situation of taking 5 percent as error threshold. Furthermore, this method laid the foundation for evaluation and prediction on effective prestress of existing bridges.
Virtual frictional loss Nominal coefficient Effective prestress
Qi Guo Shuanhai He
Key Laboratory for Bridge and Tunnel of Shaanxi Province, Changan University, Xian 710064, China
国际会议
南京
英文
1041-1045
2007-10-16（万方平台首次上网日期，不代表论文的发表时间）