摘要
普定碾压混凝土拱坝是目前世界上第３座也是最高的碾压混凝土拱坝。由于基础约束较强，约束范围大，拱坝的温度应力非常复杂。用数值分析法计算了普定水库水温；用三维有限元法计算了拱坝的准稳定温度场；根据施工实际情况和边界条件，用三维有限元法对普定碾压混凝土拱坝大仓面整体碾压的温度及温度应力进行了仿真计算，首次揭示了碾压混凝土拱坝温度和温度应力的分布规律，论证了普定拱坝设置诱导缝的必要性、合理性；有关普定碾压混凝土拱坝度讯情况下的温度应力分析成果及措施已被工程实际采用并证实。
At present, the Puding RCC Arch Dam is the 3th but the highest one in the world. The temperature stress of the dam is very complex due to the higher binding force and the larger bound area. By using numerical analysis method, the temperature of water in the Puding Reservoir was calculated, and by using three-dimensional finite element method, the quasi-stable temperature distribution of the dam was defined, and also by three-dimensional finite element method, the temperature and its stress of RCC placed and compacted in monolithic block were simulated. All these for the first time reveal the distribution of the temperature and its stress in the RCC arch dam, and prove the necessity and the reasonability of the induced joints set up in the dam. The analysis results regarding the temperature stress of the Puding RCC Arch Dam and the measures taken during flood season have been confirmed by the practice of the project.
出处
《水力发电》
北大核心
1995年第10期15-19,25,共6页
Water Power
关键词
水电站
碾压混凝土
拱坝
温度控制
温度场
temperature of water in reservoir, quasi-stable temperature distribution, RCC arch dam, compaction in monolithic block, induced joint
