CAJ | 학술논문

边坡的三维稳定性分析比其二维平面应变模型在理论上更能反映边坡的实际情况。为研究软弱夹层对边坡稳定性的影响，引入三维圆锥体平动破坏机构和牛角状螺旋圆锥体转动破坏机构，建立三维转动-平动组合破坏机构，并通过平面插入的方法实现破坏机构沿边坡的纵向拓展以便用于任意长度的边坡稳定性分析。结合算例分析，通过与弹塑性有限元数值模拟结果进行对比，验证了本文方法的有效性。分析表明，组合破坏机构能够很好的用于含软弱夹层边坡的稳定性分析并为实际工程提供一个简单有效的设计方法。
변파적삼유은정성분석비기이유평면응변모형재이론상경능반영변파적실제정황。위연구연약협층대변파은정성적영향，인입삼유원추체평동파배궤구화우각상라선원추체전동파배궤구，건립삼유전동-평동조합파배궤구，병통과평면삽입적방법실현파배궤구연변파적종향탁전이편용우임의장도적변파은정성분석。결합산례분석，통과여탄소성유한원수치모의결과진행대비，험증료본문방법적유효성。분석표명，조합파배궤구능구흔호적용우함연약협층변파적은정성분석병위실제공정제공일개간단유효적설계방법。
Three-dimensional analysis of slope stability is developing. Compared with two-dimensional method, this method can reflect the condition of slope more closely to the fact. Based on the upper bound limit analysis method, a new three-dimensional rotation-translation combined mechanism is proposed to study the stability of slope with weak interlayer. And this combined mechanism can be expended longitudinally through the plane insert;so the method could be used to analyze the slope stability with different lengths. The proposed failure mechanism is finally verified by comparisons with the elastoplastic finite element method. The comparisons show that the proposed mechanism improves the efficiency of the previously-developed rigid block mechanism to account for the presence of the weak interlayer in the slope and can be used as a simple evaluation method for the engineering design.