混凝土拱坝温控措施仿真敏感性分析  

Analysis of the Simulation Sensitivity of Temperature Control Measures for Concrete Arch Dam

作　　者：杨萍[1] 朱伯芳[1] 刘毅[1] 刘玉[1] 白迎[1] 

机构地区：[1]中国水利水电科学研究院,北京100038

出　　处：《水力发电》2009年第8期28-30,共3页Water Power

摘　　要：以某拱坝河床坝段为例,用三维有限元仿真分析方法,通过两组算例,分别对封拱灌浆前二期冷却区高度、中期冷却以及在施工中控制冷却时间的方式等对应力的影响做了敏感性分析,重点比较了两种冷却方式的冷却效果,结果表明,按事先给定的冷却天数控制冷却时间更易于操作。Taking the dam section on river bed of a arch dam as example, the sensitivity analysis of stresses was carried out by 3D finite element simulation analysis method with two calculation examples, considering the effect on stresses by high cooling, middle-time cooling and controlled cooling time in construction in second-stage cooling zone before grouting. The cooling effectiveness of two cooling ways was compared on emphasis. The results showed that controlled cooling time in accordance with given cooling days was easy to operate.

关 键 词：水管冷却 分期冷却 敏感性分析 

分 类 号：TV223.4[水利工程—水工结构工程]