空间曲线预应力束摩阻损失参数  

The Parameters u、k for Describing the Attrition Loss of Prestress Tightwire with Space Curve

作　　者：刘志文[1] 宋一凡[2] 赵小星[2] 贺拴海[2] 

机构地区：[1]同济大学桥梁工程系，上海 200092 [2]长安大学公路学院，陕西 西安 710064

出　　处：《西安公路交通大学学报》2001年第3期42-44,共3页Journal of Xi'an Highway University

摘　　要：针对空间曲线预应力束摩阻损失较大的情况 ,结合某座立交工程中的曲线梁桥的预应力摩阻损失测试 ,利用最小二乘原理得出了预应力摩阻损失参数μ、k,为施工提供依据 。The attrition loss of prestress tightwire with space curve used in cuve girder bridge is more bigger than the one of beeline tightwire. Taking a curve girder bridge at a crossroad as an example, and using the least square method, the parameters μ?k for describing the attrition loss was calculated. The results show that the parameters μ?k can provide a reference for the construction of curve girder bridge and for the calculation of other curve prestress bridge's attrition loss of prestress.

关 键 词：空间曲线预应力束 摩阻损失 最小二乘原理 曲线梁桥 计算 

分 类 号：U448.21[建筑科学—桥梁与隧道工程]