论文部分内容阅读
一、概述空腹混凝土坝是我国近年来发展起来的新坝型。如平面上也布置成拱形,则成为空腹拱坝。在一定的条件下,这种坝型具有很多优点,如可将水电站厂房布置在空腹内以解决厂房布置与泄洪的矛盾。空腹还可降低坝基扬压力,节省大坝工程量。空腹坝施工时分前后腿浇注,有利于大坝温控。但由于空腹坝形状复杂,其应力条件亦比较复杂。本文乃通过对国内某空腹拱坝的结构模型试验,研究了该坝的结构应力分布及超载破坏情况,对空腹拱坝的破
First, an overview of fasting concrete dam is a new type of dam developed in recent years in our country. If the plane is also arranged arched, then become a fasting arch dam. Under certain conditions, this type of dam has many advantages, such as the layout of hydropower plant in the fasting to solve the contradiction between plant layout and flood discharge. Fasting can also reduce the pressure on the dam foundation to save the amount of dam construction. Fasting dam construction time before and after the legs pouring, is conducive to dam temperature control. However, due to the complex shape of fasting dam, the stress conditions are also more complicated. In this paper, through the structural model test of a fast-arch dam in China, the structural stress distribution and overload failure of the dam are studied.