摘要
在复杂约束条件下,大体积混凝土的温度应力控制是难点。为此,以我国西南地区某拱坝陡坡部位混凝土仓为例,在常规方法的基础上,对其冷却降温过程做了改进设计,并基于有限元法进行了数值计算分析,结果表明,改进的冷却方案能够降低早龄期混凝土的开裂风险,同时可简化施工过程。
It is difficult to control the temperature stress of mass concrete in the condition of complex constraints. The concrete pouring in steep slope area of a concrete arch dam in southwest China is taken as an example for the analysis. Based on the conventional method, an improved design about the pipe cooling process is proposed, and is studied and verified by using finite element method. The results show that the improved cooling scheme can reduce cracking risk of mass concrete at early ages. Meanwhile, it can simply the construction process of dam.
出处
《水力发电》
北大核心
2018年第3期56-58,共3页
Water Power
关键词
大体积混凝土
水管冷却
有限元法
温度应力
mass concrete
pipe cooling
finite element method
temperature stress
