CAJ | 학술논문

运用地质力学模型试验方法,完成了微型桩与滑坡体共同作用的大型物理模型试验,研究滑坡防治中微型桩的受力分布规律与破坏模式.试验结果表明:微型桩各排桩在滑坡滑动时同时受力,各排桩的受力分布情况基本相同.微型桩所受滑坡推力基本呈梯形分布,滑面附近土压力较大;第一排桩的桩前滑体抗力呈倒三角形分布,其余各排桩的桩前滑体抗力呈抛物线形分布;桩后滑床抗力较小,呈矩形分布;桩前滑床抗力主要分布于滑面附近.微型桩各排桩同时发生破坏,破坏区域位于滑面上下各3倍桩径左右的范围内,为弯曲与剪切相结合的破坏模式.
운용지질역학모형시험방법,완성료미형장여활파체공동작용적대형물리모형시험,연구활파방치중미형장적수력분포규률여파배모식.시험결과표명:미형장각배장재활파활동시동시수력,각배장적수력분포정황기본상동.미형장소수활파추력기본정제형분포,활면부근토압력교대;제일배장적장전활체항력정도삼각형분포,기여각배장적장전활체항력정포물선형분포;장후활상항력교소,정구형분포;장전활상항력주요분포우활면부근.미형장각배장동시발생파배,파배구역위우활면상하각3배장경좌우적범위내,위만곡여전절상결합적파배모식.
Large scale model test on micropiles and landslide are carried out by geological model experiment techniques.The force distribution rule and damage form of micropiles for landslide reinforcement are studied.The test results show that micropiles suffer the force at the same time when landslide slides.The force distribution rule of every micropile is similar.The landslide-thrust distributes as trapezoid and that near the sliding face is large.The resistance of sliding mass of the first micropile is distributed as inverse triangle and that of other micropiles are distributed as parabola.The resistance of sliding bed behind the pile is small and distributed as rectangle.The resistance of sliding bed in front of the pile focuses near the sliding face.Every micropile damages near the sliding face at the same time.The damage form of micropiles can be defined as cutting and bending failure.