射流冲击下水垫塘边墙衬砌块受力的实验分析

Experimental analysis of dynamic loads on slope linings of a stilling basin by trajectory jets

为研究挑跌流消能中水垫塘边墙衬砌块的受力问题，在乌江构皮滩模型的水垫塘边墙上布置了五个测点，运用上举力测量仪量测板块所受的上举力。运用瞬变流理论分析上举力时均值的产生机理。运用随机信号理论分析了上举力最大脉动均方根值的影响因素，通过实验确定其中的参数，并对上举力沿程分布特性进行了归纳分析。为探讨边墙衬砌块的破坏机理和设计提供了科学依据。

For the study of turbulent pressure generated by energy dissipation of flow jets, the uplift measured by a dynamic strain gauge on the Gou Pi Tan Model is presented. With the model for transient flow, the mechanism of an average uplift is discussed. With the theory of stochastic hydraulic signals, the root mean square value of the fluctuating uplift is defined as a function of several factors which have been discussed in detail. The distribution characteristics have also been studied. Reliable basis for the design of suitable slabs is provided, which is conducive to the study of lining destruction.