双江拱坝传力桩加固坝肩的有限元分析

An Analysis of the Abutment with Transmission Piles of the Shuangjiang Arch Dam by Means of the FEM

双江拱坝左坝肩存在5层软弱夹层,对整个左坝肩岩体的抗滑稳定和压缩变形都有较大影响,设计拟采用14根抗滑传力桩加固坝肩。采用三维有限元法,通过对设计方案进行初步分析,发现该方案存在进一步优化的可能性,在此基础上,提出两套优化方案。通过比较分析可知,采用8根抗滑传力桩在安全性和经济性上都能得到较好满足。该成果可为其他类似工程提供一定的参考。

The left abutment of Shuangjiang Arch Dam presents five weak seams, for the whole rock of the left abutment, which has a great impact on the anti-sliding stability and compression, so 14 anti-slide piles are designed to strengthen the dam abutment. Firstly, this paper is an attempt to use the three-dimensional finite element method to design programs to find that there exists more possibility of optimization in this plan, On this basis, two optimized plans are proposed. Through a comparative analysis, it is found in this paper that using eight anti-sliding piles can better obtain security and economy. The results serve as a reference for other similar projects.