关键词: 极限分析有限元法, 边坡稳定分析, 地基极限承载力, 隧道稳定性

Abstract: The analytical method is adopted in classical geotechnical engineering limit analysis method. It cannot involve the stress-strain behavior of soil and sometimes assumptions needs to be made in advance about the shade or location of the failure surface. It is not suitable for heterogeneous materials, especially the rock engineering. So its application still remains limited. With the development of computer and computing technology, the limit analysis finite element method was put forward. With the strength reduction or load increase, the stability safety factor and failure surface can be obtained directly at limit state. It is very practical for geotechnical engineering design. This paper studies the limit analysis finite element method and its application in the slope、tunnel、ultimate bearing capacity of foundations. Through a series of case studies, the applicability of the proposed method is clearly exhibited.