白鹤滩水电站地下厂房岩锚梁混凝土温控计算研究

Study on Temperature Control Calculation of Rock Anchor Beam Concrete at Underground Powerhouse of Baihetan Hydropower Station

选取高温季节和低温季节两种工况,对白鹤滩水电站地下厂房岩锚梁混凝土的温度场和温度应力场进行三维有限元仿真计算分析。采取通水冷却温控措施以改善岩锚梁混凝土的温度场和温度应力场,满足岩锚梁混凝土温控要求。分析了浇筑温度、冬季保温和通水时间等措施对岩锚梁混凝土温控的影响。

The temperature field and the temperature stress field of the rock anchor beam concrete at underground powerhouse of Baihetan Hydropower Station are and analyzed by 3D finite element simulating calculation under the conditions of high temperature season and low temperature season. Water cooling temperature control measures are taken to improve the temperature field and temperature stress field of rock anchor beam concrete, so that to meet the temperature control requirements. The influences of casting temperature, heat preservation in winter and water supply time on temperature control of rock anchor beam concrete are analyzed.