复杂约束条件下大体积混凝土冷却降温过程优化分析  

Analysis on Cooling Process Optimization of Mass Concrete under Complex Constraints

作　　者：井向阳 

机构地区：[1]中国电建集团成都勘测设计研究院有限公司,四川成都610072 [2]国家能源水电工程技术研发中心高混凝土坝分中心,四川成都610072

出　　处：《水力发电》2018年第3期56-58,共3页Water Power

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.

关 键 词：大体积混凝土 水管冷却 有限元法 温度应力 

分 类 号：TV642[水利工程—水利水电工程]