三峡大学学报（自然科学版）2025，Vol.47Issue(3)：20-27,58,9.DOI:10.13393/j.cnki.issn.1672-948X.2025.03.004
堆石混凝土抗冲耐磨一体化浇筑施工期温度变化研究
Study on Temperature During the Construction of Rock-Filled Concrete Dam with Integrated Placement of Erosion-Resistant and Wear-Resistant Layer
摘要
Abstract
Rock-filled concrete(RFC)dam with an integrated placement of the erosion-resistant and wear-resistant layer offers enhanced construction efficiency,but presents challenges related to localized high temperatures.This study investigates the temperature variations and distribution within RFC dams during construction,focusing on the integrated placement method.A comprehensive temperature monitoring program was implemented at the Dongzhuang RFC dam,involving 128 temperature sensors strategically placed across 18 representative construction lifts.The study reveals that:peak temperatures of the conventional vibrated concrete(CVC)in erosion-resistant and wear-resistant layer are approximately 17℃ higher than those observed in the RFC,primarily attributed to differences in heat generation during hydration;implementing ice-cooling measures during CVC mixing can effectively reduce its initial placement temperature and peak temperature,and mitigate the risk of cracking within the dam;within the CVC layer,notable temperature fluctuations are observed along both the upstream-downstream axis and the elevation,leading to pronounced temperature gradients,especially proximate to the surface,prior to the establishment of a stable thermal field.Consequently,appropriate temperature control measures should be promptly implemented under adverse conditions such as rapid ambient temperature drops.关键词
堆石混凝土/一体化浇筑/抗冲耐磨层/温度监测/加冰降温Key words
rock-filled concrete/integrated placement/erosion-resistant and wear-resistant layer/temperature monitoring/ice cooling分类
建筑与水利引用本文复制引用
南康宁,杨家琦,李萌,姬广祥,朱煜坤,韩冲,金峰..堆石混凝土抗冲耐磨一体化浇筑施工期温度变化研究[J].三峡大学学报（自然科学版）,2025,47(3):20-27,58,9.基金项目
国家自然科学基金项目(52039005) （52039005）
