空间曲线预应力束摩擦损失的测试和摩擦系数反演  

Test Study on Prestress Loss Due to Friction for Space-Curved Tendons and Inversion Analysis on Friction Coefficient

作　　者：胡光祥[1] 陈东杰[1] 赵勇[2] 蔡跃[2] 

机构地区：[1]上海铁路局建设处,上海200071 [2]同济大学预应力研究所,上海200092

出　　处：《建筑科学》2004年第5期26-29,共4页Building Science

摘　　要：采用传感器法对上海铁路南站主站房工程第一施工段的六束空间曲线预应力筋进行摩擦损失测试,然后分别采用"假定系数法"和"最小二乘法"反演摩擦系数,并讨论摩擦系数取值和预应力束线形对有效预应力建立的影响,可为设计和施工提供参考。The prestress losses due to friction for six space-curved prestressed tendons were tested with the load cell method at the first construction section in the site of major platform of Shanghai South Railway Station. The coefficients of friction were analyzed by the assumption parameter method and the least square method. The influence of the coefficient of friction and the shape of prestressed tendons on the effective prestress is discussed. The results can provide reference to construction and design.

关 键 词：摩擦损失 预应力束 铁路南站 有效预应力 预应力筋 施工 摩擦系数 站房 线形 空间曲线 

分 类 号：TU378[建筑科学—结构工程] U448.35[建筑科学—桥梁与隧道工程]