分缝拱坝模型动力试验研究和分析

Model Test Study and Analysis on the Dynamic Behaviour of Jointed Arch Dams

采用小结构模型试验方法研究了带有横缝拱坝的动力特性和动力响应。试验模拟了拱坝的无缝、局部有缝和全缝三种不同的构造,分析探讨了关于分缝拱坝的动力性态的变化规律,并用相应的线性和非线性有限元法进行了计算比较,取得了基本一致的变化规律.对强震激励下的横缝破坏机理作了分析讨论。

Small scale model test method is used to study the dynamic properties and response ofarch dams with transverse joints. In order to obtain a full understanding of the effects of joints onthe behaviour of arch dams, three different types of arch dams-fully jointed, partially jointed andjointless arch dams are tested. Linear and nonlinear FEM computations are carried out, and similarresults are obtained. With the test and computation results, the analysis on the joint failuremechanism of arch dams under strong seismic excitation is provided, and some constructivesuggestions are presented.