路基工程
路基工程
로기공정
SUBGRADE ENGINEERING
2012年
4期
4-7,11
,共5页
含碎石粘性土边坡%弹塑性有限元%反演分析%解体破坏
含碎石粘性土邊坡%彈塑性有限元%反縯分析%解體破壞
함쇄석점성토변파%탄소성유한원%반연분석%해체파배
gravel clay slope%elasto-plastic FEM%inverse analysis%disintegration and failure
为了分析含碎石粘性土边坡的变形破坏过程,以浙江省58省道K15＋200滑坡为例,采用弹塑性有限元强度折减法和反分析方法,计算边坡的整体安全系数和分析该滑坡的稳定性以及变形破坏过程。结果表明,含碎石粘性土边坡的变形破坏主要是在降雨作用下边坡变形破坏过程中滑坡体各部位水平位移和竖向位移的不一致和塑性应变的不断发展引起的;采用弹塑性有限元算法可以更好地反映该类型滑坡所处的实际状态及滑坡的滑动过程。
為瞭分析含碎石粘性土邊坡的變形破壞過程,以浙江省58省道K15＋200滑坡為例,採用彈塑性有限元彊度摺減法和反分析方法,計算邊坡的整體安全繫數和分析該滑坡的穩定性以及變形破壞過程。結果錶明,含碎石粘性土邊坡的變形破壞主要是在降雨作用下邊坡變形破壞過程中滑坡體各部位水平位移和豎嚮位移的不一緻和塑性應變的不斷髮展引起的;採用彈塑性有限元算法可以更好地反映該類型滑坡所處的實際狀態及滑坡的滑動過程。
위료분석함쇄석점성토변파적변형파배과정,이절강성58성도K15＋200활파위례,채용탄소성유한원강도절감법화반분석방법,계산변파적정체안전계수화분석해활파적은정성이급변형파배과정。결과표명,함쇄석점성토변파적변형파배주요시재강우작용하변파변형파배과정중활파체각부위수평위이화수향위이적불일치화소성응변적불단발전인기적;채용탄소성유한원산법가이경호지반영해류형활파소처적실제상태급활파적활동과정。
In order to analyze deformation process of gravel clay slope, taking K15 ＋ 200 landslide at Provincial Highway 58 in Zhejiang as the example, the overall safety coefficient of the slope is calculated and the stability and deformation process of the landslide is analyzed by elasto-plastic FEM based on the strength reduction technique and inverse analysis. The results show that the deformation of gravel clay slope is mainly caused by, under the action of rainfall, the inconsistent horizontal and vertical displacements of various parts of the landslide mass as well as the continuous developing plastic strain; elasto-plastic FEM could reflect the actual status of this type of landslide and its sliding process to a better extent.
