混凝土敞口矩形水池池壁水平力有限元计算分析

Finite element analysis of the forizontal force of the open rectangular concrete pool Wall

水池池壁水平力是水池内力分析的重要组成部分,为了研究其变化分布规律,以及对配筋的影响,以混凝土敞口矩形水池为计算模型,考虑空间整体作用,采用SAP2000有限元分析软件,对不同长宽比和长高比条件下的水池池壁的边缘反力系数、水平轴力和水平弯矩受力情况进行了分析,并与《规程》的简化算法做了比较。分析结果表明:《规程》边缘反力系数与整体分析值基本接近,但在长高比为0.5和3.0的条件下偏差较大;水平轴力对配筋的影响较大,随长宽比的增加而增大,特别是池壁的顶部。

The horizontal force was an important part of the internal force analysis of the pool. In order to study the distribution law of its variation,and the effect of the reinforcement,taking concrete open rectangular pool as a model,considering the overall effect of space,the edge reaction coefficient,the horizontal force and the horizontal bending moment of the pool wall were analyzed by finite element software SAP2000 at different length-width and length-height ratio. At the same time,the simplified algorithm of the ＂Regulations＂was analyzed and compared. The analysis results showed that the edge reaction coefficient of the ＂regulation＂was close to the overall analysis,but the deviation was larger under length-width ratio of 0. 5 and 3. The horizontal axial force had a great influence on the reinforcement,and increased with the increase of the length-width ratio,especially the top of the wall.