华北水利水电大学学报（自然科学版）2023，Vol.44Issue(6)：87-95,9.DOI:10.19760/j.ncwu.zk.2023072
通水冷却措施对碾压混凝土坝施工期温度应力及防裂影响研究
Study on the Influence of Water Cooling Measures on Temperature Stress and Crack Prevention of Roller-Compacted Concrete Dam During Construction
摘要
Abstract
Dagu Hydropower Station is the highest roller-compacted concrete gravity dam under construction at present,with special environmental conditions and high requirements for crack prevention.As one of the most effective measures of dam tem-perature control,water cooling method is widely used in the construction of this project.In order to accurately grasp the influence of water cooling process on dam temperature,stress and anti-cracking safety,based on the solving algorithm of the cooling tem-perature field of various concrete water pipes commonly used in the system,this paper uses the self-developed software based on the improved embedded unit method of cooling water pipes.Taking the dam section of Dagu bank slope as the research object,combined with the environment,materials,structure and actual construction conditions,from the design scheme,the influence of water cooling process on the temperature,stress and crack resistance of the dam is systematically studied,and the specific sug-gestions of cooling water temperature,flow rate,and watering duration are proposed.关键词
碾压混凝土/岸坡坝段/温度应力/通水冷却Key words
roller-compacted concrete/bank slope dam section/temperature stress/water cooling分类
水利科学引用本文复制引用
蒋晓明,颉志强,徐航..通水冷却措施对碾压混凝土坝施工期温度应力及防裂影响研究[J].华北水利水电大学学报（自然科学版）,2023,44(6):87-95,9.基金项目
国家自然科学基金项目(52009011) （52009011）
中央级公益性科研院所基本科研业务费项目(CKSF2021455CL). （CKSF2021455CL）
