江淮水利科技2026，Vol.21Issue(1)：60-64,5.DOI:10.20011/j.cnki.JHWR.202601011
钢板护面船闸闸室墙施工期混凝土内部应力监测分析
Monitoring and analysis of internal stress of concrete during construction of steel-plate-faced walls
张乃田 1严周为1
作者信息
- 1. 安徽水安建设集团股份有限公司,安徽 合肥 230601
- 折叠
摘要
Abstract
To systematically understand the internal stress evolution characteristics of steel plate-faced mass concrete,the Linhuaigang double-line ship lock project was taken as the monitoring method.Intelligent vibrating-wire rebar strain gauges were installed on the reinforcing bars inside the lock chamber wall concrete to continuously measure the strain values of the reinforcement at different curing ages.Based on the assumption of strain compatibility between the reinforcing bars and the concrete,and combined with the empirical formula describing the variation of the elastic modulus of concrete with age,the internal stress of the concrete during the curing period was quantitatively calculated.Monitoring data indicated that the internal stress of the concrete undergoes significant changes within the first 7 days after pouring,with average stress stabilizing around 0.260 MPa.After entering the middle and later stages of maintenance(21 days later),the elastic modulus of concrete gradually tends to be stable with the increase of curing age,and the amplitude of stress fluctuations significantly decreased.The research results could provide a theoretical basis for the optimization of curing measures and crack prevention and control in large-volume steel-plate-faced concrete projects.关键词
闸室/钢板护面混凝土/水化热/内部应力/监测Key words
gate chamber/steel-plate-faced concrete/heat of hydration/internal stress/monitoring分类
建筑与水利引用本文复制引用
张乃田,严周为..钢板护面船闸闸室墙施工期混凝土内部应力监测分析[J].江淮水利科技,2026,21(1):60-64,5.
