One ashore pump house of a project has been laid under water for an average years.Its structure is a closed reinforced concrete shell containment structure.Its outer shell is supported by frame structure inside,and the auxiliary anti-flotation benefits are provided by the pile foundation at its base.The arrangement of anti-flotation piles is analyzed in this paper.Finally,according to the test result of the static load tests on anti-pull bearing capacity of large diameter rock-socketed piles,suggestions about the value determination of ultimate shaft resistance in the anti-flotation design of rock-socketed piles are proposed.

取水泵房的结构设计应解决好三方面问题:周围介质对结构的压力与约束;抗浮措施;温度作用与裂缝控制;合理的结构形式与相应的内力分析方法.本文结合工程实例重点讨论结构形式与内力分析要点.