CAJ | 학술논문

强度折减有限元法在边坡稳定性分析中得到了广泛应用。基于等效面积的D-P屈服准则如DP1,DP2,DP3,DP4等模型来模拟二维和三维边坡稳定状况,进行了边坡稳定性分析计算。得出不同折减系数下边坡中广义塑性应变的变化情况,结果表明用该模型能较好地模拟土坡的渐近破坏过程,有助于对边坡的破坏机制的更深层次的理解;并把计算结果和传统极限平衡方法进行了对比,表明三维稳定有限元分析可较二维有限元更加真实地反映边坡的稳定状况;基于等效面积的D-P屈服准则的DP3模型的计算比较真实,更好地模拟了边坡的破坏机制。
강도절감유한원법재변파은정성분석중득도료엄범응용。기우등효면적적D-P굴복준칙여DP1,DP2,DP3,DP4등모형래모의이유화삼유변파은정상황,진행료변파은정성분석계산。득출불동절감계수하변파중엄의소성응변적변화정황,결과표명용해모형능교호지모의토파적점근파배과정,유조우대변파적파배궤제적경심층차적리해;병파계산결과화전통겁한평형방법진행료대비,표명삼유은정유한원분석가교이유유한원경가진실지반영변파적은정상황;기우등효면적적D-P굴복준칙적DP3모형적계산비교진실,경호지모의료변파적파배궤제。
Some problems have not still been solved smoothly in slope stability analysis using shear strength reduction finite element method until now.Different equivalent area Drucker-Prager yield criteria,such as DP1,DP2,DP3 and DP4 yield criteria,can give an approximate estimation of soil failure strength under two and three-dimensional slope stability analyses condition,and the slope stability coefficient was calculated.Coming to different discount coefficients in the generalized plastic strain slope development,it can be able to simulate the failure process of slope.And the calculation result is compared with the result calculated by using the traditional limit equilibrium method,it shows that the three-dimensional finite element analysis conforms to the reality more than two-dimensional finite element analysis,whereas the DP3 yield criterion,which can carry out more real calculation,will give a better simulate slope failure mechanism.