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在各种大坝类型中,拱坝是一种结构合理、体型优美的坝型,它作为一种经济性和安全性均较优越的坝型,在我国及全世界各国都被广泛采用。由于地质条件的复杂,混凝土坝体开裂是很多高坝体较常见的一种灾害,本文以非线性有限元软件ABAQUS为计算平台,实现了对拱坝已有裂缝的模拟,并得出如下结论:1)使用混凝土损伤塑性模型来模拟混凝土的开裂现状,简单合理,可以满足对混凝土拱坝的开裂计算。2)拱坝开裂是一种很普遍的现象,超载K=1时,在坝踵处产生了裂缝,对该坝体稳定性损害极大,施工和设计时应予以考虑。
Among all kinds of dams, arch dam is a kind of dam with reasonable structure and graceful shape. As a kind of dam with superior economy and safety, it is widely used in our country and all over the world. Due to the complex geological conditions, cracking of concrete dam body is one of the most common disasters in many high-dam. Based on the finite element software ABAQUS, this paper simulates the existing cracks in arch dam and draws the following conclusions : 1) The plastic damage plastic model is used to simulate the cracking of concrete, which is simple and reasonable to meet the cracking calculation of concrete arch dam. 2) Cracking of arch dam is a common phenomenon. When K = 1 is exceeded, a crack is generated at the heel of the dam, which greatly damages the stability of the dam. Construction and design should be considered.