高拱坝混凝土二期冷却优化研究  

Study on Optimization of Second-stage Cooling of High Arch Dam Concrete

作　　者：韩燕[1] 黄达海[1] 王汉姣[1] 

机构地区：[1]三峡大学土木水电学院,湖北宜昌443002

出　　处：《云南水力发电》2007年第1期53-57,共5页Yunnan Water Power

摘　　要：利用数值仿真计算方法,在基本温控方案的基础上,进行了更细致的温控措施优化设计。为了达到技术上与经济上双优的目的,根据不同灌浆区的混凝土龄期、混凝土温升过程、封拱温度等,系统研究了在不同季节里、在不同高程上采取不同温控措施的可行性,得到了拱坝温度场与应力场的特征参数,为施工单位根据当时的特定需要,进行二期冷却或三期冷却提供了依据。Based on the basic temperature control scheme the authors of this paper have carried out the optimized design of the temperature control measures by using the numerical simulation method. In order to optimize the design technically and economically the paper has studied systematically the feasibility of applying different temperature control measures in different seasons and at different elevations according to the concrete ages of different grout compartments, the concrete temperature rising process and the arch temperature etc., and obtained characteristic parameters of both arch dam temperature fields and stress fields, thus providing basis for construction units to implement second - stage cooling or third- stage cooling according to specific demand at specific time.

关 键 词：仿真分析 大体积混凝土 温控措施 

分 类 号：TV642.4[水利工程—水利水电工程] TV52