宽阔河谷中小型拱坝设计探讨

Approach to Design of Small or Medium-sized Arch Dam Built on Broad Valley

分析在河谷宽高比达3.5～10左右的河谷中修建中小型拱坝的意义及特点,着重介绍把宽阔河谷拱坝和地基(或基座)接触面之间视为一水平摩擦缝,其摩擦系数由地质条件及建坝材料决定,然后用允许梁底滑移的拱冠梁法设计计算宽阔河谷拱坝的方法步骤。

This paper analizes the significance and features of building small or medium_sized arch dam on a valley with depth_to_width ratio 3.5～10.The author presents mainly that the interface between arch dam and foundation (or sub_base) should be regarded as a horizontal surface of friction,the friction coefficient of which depends on geologic condition and building material.Method and procedure of building arch dam on broad valley are designed and calculated by method of arch crown beam with permitting slip of breast.