拱坝推力墩稳定性分析

Stability Analysis of Thrust Block of Arch Dam

鉴于推力墩的稳定性关乎拱坝整体安全,从抗滑和抗倾覆两方面考虑,采用刚体极限平衡法和等效应力法分析了推力墩的抗滑和抗倾覆稳定性,并以威后拱坝推力墩为例,验证了两种方法在推力墩抗滑和抗倾覆稳定性分析中的应用。结果表明,刚体极限平衡法和等效应力法相结合,能较好地分析推力墩的整体稳定性。

As the stability of the thrust block is vital to the holistic stability of the arch dam,limit equilibrium method of rigid body and equivalent stress method are adopted to analyze the stability of thrust block from the aspects of anti-sliding and against overturning.Taking Weihou thrust block of arch dam for an example,it proves the application of theses two methods in anti-sliding stability and against overturning of thrust block.The results show that combination of two methods can analyze the holistic stability of the thrust block preferably.