水利与建筑工程学报
水利與建築工程學報
수리여건축공정학보
TECHNIQUE OF SEEPAGE CONTROL
2014年
3期
23-27
,共5页
高填路堤边坡%极限平衡法%稳定安全系数%敏感性分析%有限元强度折减法
高填路隄邊坡%極限平衡法%穩定安全繫數%敏感性分析%有限元彊度摺減法
고전로제변파%겁한평형법%은정안전계수%민감성분석%유한원강도절감법
slope of high embankment%limit equilibrium method%safety factor of stability%sensibility analysis%strength reduction FEM
采用传统的极限平衡法,利用边坡稳定分析不同方法对高填路堤三种边坡形态影响因素:填土高度、路堤边坡坡比、地基倾斜角取不同的值进行了安全系数的计算并做了对比分析。在此基础上,采用灰色关联分析方法对边坡稳定进行敏感性因素分析。经分析,路堤的倾斜角对边坡稳定性影响最为敏感,而路堤填筑高度次之。利用有限元分析中的强度折减法对不同地基倾斜角分别在三种失稳判据下进行了安全系数计算,并与极限平衡法进行对比,结果显示安全系数相差不大。经过后处理功能得到边坡位移等值线云图,确定了滑动面的形状为圆弧状及其位置。
採用傳統的極限平衡法,利用邊坡穩定分析不同方法對高填路隄三種邊坡形態影響因素:填土高度、路隄邊坡坡比、地基傾斜角取不同的值進行瞭安全繫數的計算併做瞭對比分析。在此基礎上,採用灰色關聯分析方法對邊坡穩定進行敏感性因素分析。經分析,路隄的傾斜角對邊坡穩定性影響最為敏感,而路隄填築高度次之。利用有限元分析中的彊度摺減法對不同地基傾斜角分彆在三種失穩判據下進行瞭安全繫數計算,併與極限平衡法進行對比,結果顯示安全繫數相差不大。經過後處理功能得到邊坡位移等值線雲圖,確定瞭滑動麵的形狀為圓弧狀及其位置。
채용전통적겁한평형법,이용변파은정분석불동방법대고전로제삼충변파형태영향인소:전토고도、로제변파파비、지기경사각취불동적치진행료안전계수적계산병주료대비분석。재차기출상,채용회색관련분석방법대변파은정진행민감성인소분석。경분석,로제적경사각대변파은정성영향최위민감,이로제전축고도차지。이용유한원분석중적강도절감법대불동지기경사각분별재삼충실은판거하진행료안전계수계산,병여겁한평형법진행대비,결과현시안전계수상차불대。경과후처리공능득도변파위이등치선운도,학정료활동면적형상위원호상급기위치。
Based on the limit equilibrium method ,the different methods were used to carry out the calculation and analy -sis of safety factor in three different influencing factors about the slope shape of high embankment ,including the depth of embankment ,ratio of slope and bank angle .Based on this ,the grey correlation analysis method was used to carry out the sensibility analysis of slope stability .Through calculation ,the result suggests that the bank angle is the most sensitive factor and the embankment depth is second .Simultaneously ,the strength reduction FEM is used to calculate the safety factor of the slope in three different unstablity conditions when the slope angle is different ,and its result is in accord with the solution from the limit equilibrium method which is known by comparison .After processing ,the displacement nepho-graph of slopes is got ,and the arc shape and location of slip surface are confirmed .