为实现高温熔盐罐基础在多场耦合作用下的结构设计,通过有限元对熔盐罐基础的温度场和应力场分布规律及关键参数敏感性进行分析。结果表明：初始环境温度与钢环板应力成反比;昼夜温差对基础影响较小,季节温差对基础影响较大;自重荷载作用下钢环板应力为温度作用下钢环板应力的3%,温度应力是熔盐罐基础结构设计的关键。
Abstract
To achieve the structural design of high-temperature molten salt tank foundation under multi field coupling, the distribution of temperature field and stress field and the sensitivity of the initial environmental temperature, convective heat transfer coefficient, and coefficient of thermal expansion of the molten salt tank foundation were analyzed by finite element analysis. The results show that the initial ambient temperature was inversely proportional to the stress of the steel ring plate. Diurnal temperature difference has little effect on foundation, while seasonal temperature difference has great effect on foundation. The stress of the steel ring plate under self-weight load is 3% of the stress of the steel ring plate under the action of temperature, so it is necessary to take insulation measures for the steel ring plate in the structural layout.
关键词
太阳能热发电站 /
温度场 /
应力场 /
敏感性分析 /
熔盐罐基础
Key words
solar thermal power station /
temperature field /
stress field /
sensitivity analysis /
molten salt tank foundation
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