预应力摩阻力测试方法研讨  

Discussion on Testing Method of Prestressed Friction Resistance

作　　者：曾博伦 ZENG Bo-lun(University of Illinois at Chicago,Chicago 60607,USA)

机构地区：[1]伊利诺伊大学芝加哥分校,芝加哥60607

出　　处：《价值工程》2021年第1期131-134,共4页Value Engineering

摘　　要：本文结合了某特大桥大跨度连续梁施工实例,就预应力张拉的管道摩阻损失参数值的测试方法进行了阐述。为了获得预应力管道的实际管道偏差系数和管道摩阻系数,还详细介绍了采用最小二乘法对测试的数据进行分析及处理的方法。通过实测摩阻损失,施工现场调整了预应力的施加方案,确保了大跨度连续梁的结构安全。This paper combines a construction example of a large-span continuous beam of a super-large bridge to explain the test method of the parameter value of the friction loss of the prestressed pipe.In order to obtain the actual pipeline deviation coefficient and pipeline friction coefficient of the prestressed pipeline,the method of analyzing and processing the test data using the least square method is also introduced in detail.Through actual measurement of friction loss,the pre-stress application plan was adjusted on the construction site to ensure the structural safety of the large-span continuous beam.

关 键 词：大跨度连续梁 摩阻损失实测 测试方法 最小二乘法 

分 类 号：TU473[建筑科学—结构工程]