CAJ | 학술논문

基于弹塑性平面应变有限单元法，本文模拟路堤水平分层分步填筑动态施工力学行为，建立斜坡软弱地基在路堤荷载作用下的数值分析模型，获得普通水平地基、水平软弱地基、普通斜坡地基及斜坡软弱地基4种工况下地基的侧向变形与竖向沉降随路堤填筑施工的动态变化规律。引入地基变形系数，分析地基侧向变形与竖向沉降的耦合、制约关系，奠定基于侧向变形控制的斜坡软弱地基路堤设计原则的理论基础，结合土工离心模型试验所获得的地基变形系数及位移场，讨论打入桩与抗滑桩加固斜坡软弱地基路堤的机理。
기우탄소성평면응변유한단원법，본문모의로제수평분층분보전축동태시공역학행위，건립사파연약지기재로제하재작용하적수치분석모형，획득보통수평지기、수평연약지기、보통사파지기급사파연약지기4충공황하지기적측향변형여수향침강수로제전축시공적동태변화규률。인입지기변형계수，분석지기측향변형여수향침강적우합、제약관계，전정기우측향변형공제적사파연약지기로제설계원칙적이론기출，결합토공리심모형시험소획득적지기변형계수급위이장，토론타입장여항활장가고사파연약지기로제적궤리。
Based on elastic‐plastic plane strain finite element method ,this paper derived dynamic variation law on ground lateral deformation and vertical settlement along with the embankment filling construction under four working conditions including common horizontal ground ,horizontal weak ground ,common sloped ground and sloped weak ground ,by simulating dynamic construction mechanical behavior during horizontally layered and staged fill placement of embankment and by establishing numerical analysis model for sloped weak ground under embankment loading .Ground deformation coefficient was introduced to analyze the coupling and constraining relationship between lateral deformation and vertical settlement ,which was used to propose the theoretical foundation for lateral deformation control based design principles about embankment over sloped weak ground . In combination with ground deformation coefficient and displacement field derived from geotechnical centrifugal model test ,the mechanism of weak ground embankment reinforced with driven pile and anti‐slide pile was dis‐cussed .