水力发电学报2025，Vol.44Issue(11)：89-100,12.DOI:10.11660/slfdxb.20251109
低热水泥混凝土拱坝不设横缝可行性分析
Feasibility analysis on low-heat cement concrete arch dam without transverse joints
摘要
Abstract
Transverse joints in arch dam construction severely affect the safety,efficiency,and economy of the project.The utilization of low-heat cement concrete as dam body filling provides a basis for construction of an arch dam without transverse joints due to its low thermal stress,but it will suffer a great risk of dam cracking if conventional temperature control is adopted.To avoid the risk,this paper constructs a temperature stress surrogate model for modeling low-heat cement concrete-filled arch dams without transverse joints,examines the calculation method of failure strength under thermal stress conditions.For this concrete,we also examine its strength reduction and work out a new method for intelligent control of its temperature.Results show that the new method offers the feasibility of arch dams without transverse joints,through taking full consideration of strength reduction caused by concrete creep effect.It can achieve the goal-eliminating transverse joints in arch dams,ensuring structural safety,and improving construction efficiency.关键词
水利工程/低热水泥混凝土拱坝/横缝/代理模型/强度折减/智能温控Key words
hydraulic engineering/low-heat cement concrete arch dam/transverse joint/surrogate model/strength reduction/intelligent temperature control分类
水利科学引用本文复制引用
王东民,马睿,张凤强,胡昱,李庆斌..低热水泥混凝土拱坝不设横缝可行性分析[J].水力发电学报,2025,44(11):89-100,12.基金项目
国家自然科学基金重点项目(52130901) （52130901）
水圈科学与水利工程全国重点实验室团队重点项目(sklhse-TD-2024-D03) （sklhse-TD-2024-D03）
引江济淮(河南段)工程科研项目(No.HNYJJH/JS/FWKY-2021005) （河南段）
