云南水力发电2024，Vol.40Issue(10)：91-96,6.DOI:10.3969/j.issn.1006-3951.2024.10.020
盾构隧洞环锚缓粘结钢绞线分级控制张拉技术
Graded Control Tensioning Technology for Shield Tunnel Ring Anchor Slow Bonding Steel Strand
李登铖 1曾庆好 1尚书毫 1朱然勋 1董玉鹏1
作者信息
- 1. 中国水利水电第十四工程局有限公司,云南 昆明 650041
- 折叠
摘要
Abstract
This paper summarizes and discusses the graded control tensioning technology of shield tunnel ring anchor slow bonding steel strand.Through actual tensioning data verification,the graded tensioning forces at all levels have reached the design tensioning force values,and the actual elongation values of each bundle of steel strands meet the calculated theoretical elongation values.The actual elongation values are within±6%range.According to this tensioning technique,the concrete did not show cracks and the steel strands did not break after the tensioning of the ring anchor bonded steel strands,meeting the design and specification requirements.It greatly reduces construction cost investment,improves construction efficiency and quality in terms of process methods,tensioning techniques,and construction efficiency.关键词
环锚张拉/缓粘结/理论伸长值/分级张拉Key words
ring anchor tensioning/slow adhesion/theoretical elongation value/graded tensioning分类
建筑与水利引用本文复制引用
李登铖,曾庆好,尚书毫,朱然勋,董玉鹏..盾构隧洞环锚缓粘结钢绞线分级控制张拉技术[J].云南水力发电,2024,40(10):91-96,6.
