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体外预应力是预应力钢绞线布置在混凝土截面之外的预应力,它是预应力体系的重要分支。本文采用有限元软件对体外预应力圆形水池的池壁进行受力分析,通过比较施加预压力前后池壁内力的变化,以及对比常规结构(体内预应力)圆形水池池壁内力,肯定了体外预应力在圆形水池中抵抗池壁环拉力和控制抗裂度方面的作用,并展望了体外预应力的应用前景。
External prestressing is the prestressing of prestressed steel strand outside the concrete section, which is an important branch of the prestressed system. In this paper, finite element software is used to analyze the force distribution of pool wall of external prestressed circular pool. By comparing the internal force before and after the application of pre-pressure, and comparing the internal force of pool wall of circular pool with conventional structure (internal prestress) The role of external prestress in circular pool in resisting pool wall ring tension and controlling the crack resistance is also discussed. The application prospect of external prestress in the future is also forecasted.