摘要
从碾压混凝土的材料特性、施工特点、温度场温度应力的变化特点入手,结合几个工程总结了碾压混凝土重力坝、拱坝的分缝方式,降低浇筑温度、水管冷却、表面保温、施斜层碾压等温控措施,采用微膨胀混凝土、提高材料抗裂性能等改善材料性能措施及碾压混凝土温度场、应力场仿真分析的要求和应注意的问题。
Based on several actual cases, the temperature control measures for roller compacted concrete （RCC） gravity dam and arch dam such as structural jointing for construction; lowering of concrete placing temperature; water pipe cooling; surface insulation ; inclined-layer placing etc., the measures to improve the material properties i.e. the application of micro-expanding concrete; enhancement of material crack-resistance property and the requirement for the simulative analysis on both the temperature field and stress field as well as some problems concerned are summarized herein on the basis of the analysis on the nlaterial properties; construction characteristics and the changing characteristics of the thermal stress of roller compacted concrete.
出处
《水利水电技术》
CSCD
北大核心
2007年第6期41-46,共6页
Water Resources and Hydropower Engineering
基金
自然科学重点基金(E50539010
E50539120)
关键词
碾压混凝土坝
温度应力
材料性质
施工方法
温度控制
RCC dam
thermal stress
material property
construction method
temperature control
