后张法预应力筋张拉伸长量计算原理和影响因素分析  

Calculation Principle and Influence Factor Analysis of Post Tensioned Prestressing Tendon Extension

作　　者：刘士涛 LIU Shi-tao(The 5th Engineering Co.,Ltd.of China Railway 18th Bureau Group,Tianjin 300459,China)

机构地区：[1]中铁十八局集团第五工程有限公司,天津300459

出　　处：《广东水利电力职业技术学院学报》2020年第1期9-11,30,共4页Journal of Guangdong Polytechnic of Water Resources and Electric Engineering

摘　　要：结合某梁场预应力工序施工阐述预应力筋理论伸长量的计算原理,分析采用后张法预应力筋实际伸长量的测量与计算方法,以及影响预应力筋伸长值的关键因素和预控措施,为今后类似工程提供借鉴经验。Based on the construction of a beam yard,this paper discusses the calculation principle of the theoretical elongation of the prestressed tendons,analyzes the measuring and calculation method of the actual elongation of the prestressed tendons by the post-tensioning method,and makes a detailed summary and concrete analysis of the key factors affecting the elongation value of the prestressed tendons and the pre-control measures,so as to provide useful experience for similar projects in the future.

关 键 词：预应力 伸长量 计算原理 影响因素 预控措施 

分 类 号：U445.57[建筑科学—桥梁与隧道工程]