西北水电Issue(5)：38-43,6.DOI:10.3969/j.issn.1006-2610.2025.05.006
上覆等效堆石体对堆石混凝土温度的影响研究
Study on the Influence of Overlying Equivalent Rockfill on the Temperature of Rock-Filled Concrete
摘要
Abstract
As a mass concrete construction technology independently developed in China,rock-filled concrete(RFC)technology has been widely applied in water conservancy and hydropower projects due to its economic efficiency,construction convenience,and environ-mental protection characteristics.Existing simulations of the RFC temperature field mostly focus on the temperature field analysis of a sin-gle pouring silo,ignoring the influence of rockfill entering the silo on the boundary conditions of the underlying concrete during continuous pouring of multiple silos,which results in insufficient accuracy of temperature field simulation.To analyze the influence of the overlying equivalent rockfill on the temperature of RFC,this study takes the Lvtang Arch Dam project as the research background,and systemati-cally investigates the influence law of rockfill entering the silo on the silo surface boundary conditions through on-site monitoring data and inversion analysis.The results show that:the surface heat dissipation coefficient of the equivalent unit of rockfill should be 1.5 times that of RFC,and the thermal conductivity should be 3.0 times that of RFC;this setting can reduce the temperature field calculation error by approximately 0.7℃and significantly improve the simulation accuracy.The research results provide a more accurate boundary condition processing method for the temperature stress simulation of RFC dams during the construction period,and have important guiding signifi-cance for the optimization of temperature control measures and engineering practice.关键词
堆石混凝土/温度场/边界条件/热学参数/反演分析Key words
rock-filled concrete(RFC)/temperature field/boundary condition/thermal parameter/inversion analysis分类
水利科学引用本文复制引用
倪一鸣,王爱军,肖安瑞,徐小蓉,闫麒任..上覆等效堆石体对堆石混凝土温度的影响研究[J].西北水电,2025,(5):38-43,6.基金项目
国家自然科学基金项目(52039005) （52039005）
中央高校基本科研业务费专项资金(2025MS070) （2025MS070）
