多排抗滑桩治理工程的有限元设计计算与优化

在现行计算方法中,通常采用不平衡推力法等传统方法设计抗滑桩。尽管国内外岩土工程技术人员通过研究使传统算法取得了较大的进展,但仍有许多不完善的地方,特别对于多排抗滑桩治理工程的设计计算,传统方法更难胜任,而采用有限元强度折减法则能解决这些问题。通过文中工程实例的设计计算可以看出,由于有限元强度折减法可以充分考虑桩—土之间的共同作用,可以得到推力与抗力的分布形式;可以分析不同桩长和桩位对治理工程稳定性的影响,并进行治理方案的优化设计;可以得到作用在埋入式抗滑桩上的推力与抗力,因此能较好地进行抗滑桩治理工程的设计计算。

FEM Design and Calculation in the Governance Engineering of Anti-slide Piles

In the current calculation methods,some traditional methods such as imbalance thrust force are used in the design of anti-slide piles.The geotechnical engineers at home and abroad have made great progress in the traditional calculation methods through continuous researches,but many deficiencies still exist,especially for the design and calculation of the governance engineering with multi-slice anti-slide piles.However,FEM strength reduction can solve these problems.Through the analysis of practical engineering,FEM strength reduction can fully take the interaction between pile and soil into consideration so as to obtain the distribution of thrust and resistance;the influence of different pile lengths and locations on the stability of the engineering can be analyzed and the optimal design becomes feasible;the thrust and resistance on the embedded piles can be worked out in order to conduct design and calculation in the governance engineering of anti-slide piles.