摘要
在深入分析碾压混凝土重力坝施工期常见裂缝开裂机理的基础上,以武都碾压混凝土大坝为例,采用反馈分析获取的热力学参数,仿真分析了采用不同温控措施时大坝温度和应力的变化规律,对比了不同温控措施之间的差异,尤其是保温与不保温之间的差异。针对施工期出现的几种典型开裂风险,提出了相应的温控措施,为大坝施工期防裂决策提供了依据。
On the basis of cracking mechanism research of RCC dams during the period of construction, the distributions of temperature and thermal stress in clam body under different temperature control measures are obtained for Wudu RCC Dam after adopting the thermal and mechanical parameters obtained by the feed-hack analysis for simulation. The results under different temperature control measures are compared, particularly with insulation and without insulation. The corresponding temperature control measures are put forward to deal with the typical cracking risks. The study provides a basis for the decision-making of crack prevention during the construction period.
出处
《水力发电》
北大核心
2011年第12期27-30,共4页
Water Power
基金
国家自然科学青年基金项目(50909105)
水利部行业公益科研专项(200801007)
国家科技支撑计划项目(2008BAB29B05)
中国水利水电科学研究院科研专项基金项目(材集1028)
关键词
碾压混凝土坝
温控防裂
反演分析
风险预测
武都水库工程
RCC dam
temperature control and crack prevention
feedback analysis
risk prediction
Wudu Reservoir project
