（1 湖北工业大学土木工程与建筑学院，武汉 430068； 2 廊坊市中铁物探勘察有限公司东南项目部，泉州 362005）
［摘要］结合某客运专线双线整孔简支箱梁的孔道摩阻损失试验，介绍了预应力束摩阻损失的试验方法，利用最小二乘法对测试数据进行处理，得到了摩阻损失系数μ和κ的计算公式及其实测结果。结果表明曲线梁的κ值比直线梁的大，我国桥涵施工规范关于μ值的规定过于严格，预应力损失参数μ，κ值应在正式施加预应力之前由现场试验确定，以此作为预应力混凝土结构的设计和施工的参考依据。
［关键词］摩阻损失；预应力束；最小二乘法；摩阻系数；曲线梁
Research on attrition loss of prestress wire with space curve
Su Jun1, Dou Jun1, You Xiaoyue2（1 Department of Civil Engineering of Hubei University of Technology, Wuhan 430068, China; 2 Project Department of Dongnan, Zhongtie Geophysical Prospecting Reconnaissance Co.,Ltd., Quanzhou 362005, China）
Abstract:The experimental method to determine the attrition loss of prestress wire is introduced, combining with the tube frictional resistance loss measurement of single room simple box girders in double lines of a special railway. The data are processed by the least square method, and the calculation formula for frictional factors,μandκ, is obtained. The results show the frictional factorκof curved beams is a little larger than that of straight lined beams, the fixed frictionalμin Chinese national standard is extremely strict, the frictional factorsκandμshould be determined according to the spot experiment before exerting prestress. These parameters obtained provide the foundation for the prestress concrete structure design and construction.
Keywords:attrition loss； prestress wire; least square method; attrition parameters; curved bridge
作者简介：苏骏，博士，副教授，Email:sunjun930@163.com。
参考文献
［1］邹焕祖,刘自明.预应力混凝土空间长钢绞线束孔道摩阻损失的测试方法［J］.桥梁建设，1993(4).
［2］JTJ041—2000公路桥涵施工技术规范［S］.
［3］TB10203—2002铁路桥涵施工规范［S］.
［4］刘永前，张彦兵，王新敏.后张梁管道摩阻损失测试技术与数据处理［J］.中国安全科学学报,2005,15（1）.
［5］黄棠,王效通.结构设计原理［M］.北京:中国铁道出版社,1980.
［6］邵容光,夏淦.混凝土弯梁桥［M］.北京:人民交通出版社,1994.
［7］郭宏伟.空间曲线管道摩阻损失的测试及探讨［J］.桥梁,2005(8).
［8］钟铭,李文会,袁长卿.曲线梁预应力束摩阻损失计算［J］.石家庄铁道学院学报,1998,11(4).