【摘要】 针对龙滩碾压混凝土坝的特点,计算了坝体混凝土在不同浇筑方案下的温度和温度应力。根据应力分析的结果,提出了合理的温控标准和相应的温控措施。研究了坝体混凝土浇筑过程长间歇情况下的应力规律。另外还研究了坝体混凝土与防渗面板异步上升施工情况下,不同长度面板和在不同施工条件下的温度应力和防裂条件。更多还原

【Abstract】 The temperature and thermal stresses under different placing procedures are calculated by taking into account the characteristics of Longtan RCC dam. According to the results of thermal stresses,the reasonable temperature control standards and temperature control measures are proposed. The thermal stresses of dam are studied when long intervals occur in the concrete placement. Researches on thermal stresses and crack prevention conditions for different concrete slab lengths and different construction conditions are carried out when dam con crete and the concrete face slab for preventing percolation are placed in different steps.更多还原