滑坡-抗滑桩相互作用下滑坡推力的研究  

Research on landslide thrust under the landslide and anti-slide piles interaction

作　　者：吉月明 Ji Yueming(Linfen South Expressway Branch,Shanxi Transportation Holdings Group Co.,Ltd.,Linfen Shanxi 041000,China)

机构地区：[1]山西交通控股集团有限公司临汾南高速公路分公司,山西临汾041000

出　　处：《山西建筑》2024年第14期96-99,共4页Shanxi Architecture

摘　　要：为了研究滑坡-抗滑桩相互作用下的滑坡推力,通过模拟滑坡试验,分析了初期变形阶段、均匀变形阶段、加速变形阶段以及破坏阶段土压力变化。研究结果表明:在土体初始变形阶段,随着荷载的增大,土压力随之增大,其中桩3桩后土压力最大,最大土压力为3.85 kPa,在此阶段土体开始出现裂缝。在土体均匀变形阶段,随着荷载的增大,最大土压力出现深度增大,其中桩2桩后土压力最大,最大土压力为6.74 kPa,在此阶段土体裂缝扩大,微小裂缝增加。在土体加速变形阶段,随着荷载的增大,桩2桩后土体和桩间土体最先被破坏。在土体破坏阶段,土体压力快速下降,表面位移增大,桩中间部位土压力小于两端,土体完全被破坏。In order to research the landslide thrust under the landslide and anti-slide piles,the paper,based on the simulation of the landslide experiments,analyzes the early deformation phase,uniform deformation phase,accelerated deformation phase and soil pressure change in the damaged phase,proves by the research result that the soil pressure increases along with the added loading during the early deformation phase of the soil mass,among which the soil pressure behind piles of the No.3 Pile is the largest and the maximal soil pressure is 3.85 kPa and cracks appear on the soil mass during this period;during the uniform deformation phase,there is the depth increases for the maximal soil pressure along with the increasing loading,among which the soil pressure behind piles of the No.2 Pile is the largest and the maximal soil pressure is 6.74 kPa and during this period the cracks on the soil mass are widened and more tiny cracks;during the accelerated deformation phase,the soil mass behind the No.2 Pile and between piles are damaged earliest with the increasing loading;during the damage phase of the soil mass,the soil pressure drops rapidly and the surface displacement increases,the soil pressure at the central parts of the piles is lower than that of the two ends,and the soil mass is totally damaged.

关 键 词：滑坡 抗滑桩 土体压力 模型试验 

分 类 号：TU452[建筑科学—岩土工程]