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.
出处
《水力发电》
北大核心
2009年第8期28-30,共3页
Water Power
关键词
水管冷却
分期冷却
敏感性分析
cooling by water pipe
cooling by stage
sensitivity analysis
