预应力钢绞线伸长量与回缩值量测装置研发与应用  

Research and Application of Measuring Device for Elongation and Retraction Value of Prestressed Steel Strand

作　　者：贾建文 李明新 JIA Jianwen;LI Mingxin(POWERCHINA SINOHYDRO ENGINEERING BUREAU 14 CO.,LTD.,Kunming 650041,China)

机构地区：[1]中国水利水电第十四工程局有限公司,云南昆明650041

出　　处：《云南水力发电》2024年第10期121-124,共4页Yunnan Water Power

摘　　要：随着我国交通网络的快速发展,预应力混凝土在桥梁中已普遍使用,而预应力混凝土施工过程中,钢绞线的施工显得尤为重要,会直接影响预应力混凝土的质量。预应力施工中钢绞线的伸长值和回缩值作为施工的重要控制指标,如何快速、准确地量测出两项参数成为预应力施工中的关键工作,文章通过对一种预应力钢绞线伸长量和回缩值量测装置的研发与应用进行阐述,保证预制梁混凝土的施工质量,提高了施工效率。With the rapid development of China's transportation network,prestressed concrete has been widely used in bridges.In the process of prestressed concrete construction,the construction of steel strands is particularly important and will directly affect the quality of prestressed concrete.The elongation and retraction values of steel strands in prestressed construction are important control indicators.How to quickly and accurately measure these two parameters has become a key task in prestressed construction.The paper elaborates on the development and application of a device for measuring the elongation and retraction values of prestressed steel strands,ensuring the construction quality of precast beam concrete and improving construction efficiency.

关 键 词：预应力 钢绞线 伸长量 回缩值 

分 类 号：TV332[水利工程—水工结构工程]