斜拉桥索塔环向预应力摩阻损失试验研究  

Experimental Research on Circular Prestress Friction Loss of Cable-stayed Bridge Pylon

作　　者：洪勇 黄舒文[2] 韩海宏[2] 

机构地区：[1]如皋市交通投资发展有限公司,江苏如皋226500 [2]东南大学交通学院,江苏南京210096

出　　处：《西部交通科技》2013年第4期43-49,共7页Western China Communications Science & Technology

摘　　要：文章依托江苏省如皋市长青沙二桥(斜拉桥)工程项目,通过预应力张拉试验,现场实测了U形预应力筋的摩阻损失,并采用最小二乘法拟合求得孔道摩阻系数和偏差系数,验证了此种预应力结构的合理性。Relying on Changqingsha II Bridge（cable-stayed bridge）engineering project in Rugao City,Jiangsu Province,through the prestressed tension test,the article measured the actual friction loss of U-shaped prestress tendons, used the least square fitting to obtain the pore friction coefficient and the variation coefficient,and verified the rationality of such prestressed structures.

关 键 词：斜拉桥 摩阻损失 预应力张拉试验 

分 类 号：U448.27[建筑科学—桥梁与隧道工程]