江垭水电站碾压混凝土重力坝的温度应力分析

为研究温度荷载对江垭水电站碾压混凝土重力坝的影响,以其非溢流坝段为研究对象,建立有限元模型,根据江垭水电站的水温、气温、坝体温度、地基温度等监测资料,计算分析了大坝运行期的温度场,研究了大坝在温度场影响下的应力变化规律.研究结果表明:温度荷载对大坝运行有较大影响,但是大坝仍满足规范设计要求;夏季持续高温时,应避免大坝在高水位下运行;冬季持续低温时,应避免大坝在低水位下运行.

Temperature Stress Analysis for RCC Gravity Dam of Jiangya Hydropower Station

In order to research the influence of temperature load on roller compacted concrete（RCC） gravity dam of Jiangya Hydropower Station,taking the non-overflow dam section as a research object,a dam section＇s finite element model is established. Based on monitoring data of water temperature,air temperature,dam body temperature and foundation temperature about Jiangya Hydropower Station,the temperature field of the dam during operation period is calculated and analyzed,and stress variation law of dam under the influence of temperature field is researched. The results show that temperature load has a great influence on the dam operation,but dam still meet code design requirements; when the high temperature is persistent in summer,the dam should avoid operation under high water level; when the low temperature is persistent in winter,the dam should avoid operation under low water level.