超长水池温度应力分析及探讨

Analysis and Discussion on Temperature Stress of Large Size Extra Long Water Tank

本文结合市政工程实例,采用公式简化计算法、有限元简化计算法和有限元整体计算法,计算水池长度、地基水平阻力系数Cx取值对超长水池池体温度应力的影响根据计算所得温度应力,通过提高混凝土的配筋率、严格执行构造和施工措施来降低温度应力的影响,从而适当调整伸缩缝间距,并满足裂缝控制要求。为优化超长水池的结构方案提供理论和数值依据。

In order to analyze the influence of the length of water tank and the coefficient of horizontal resistance of foundation(C_x) on the temperature stress of overlength water tank,an example of municipal engineering was analyzed by using simplified formula calculation method,the method of simplified finite element and integral finite element method.According to the results of temperature stress,the influence of temperature stress can be reduced by increasing the reinforcement ratio of concrete,strictly implementing the constructional measures and construction measures.And then the requirements of crack control can be satisfied by appropriatly adjusting the spacing of expansion joint.The study provided theoretical and numerical basis for optimizing the structural scheme of overlength water tank.