柔性石笼挡墙变形受力的PFC2D数值模拟

石笼挡墙作为一种新型的挡土结构,在国内的应用还不够多,同时在已建或待建的挡土工程中,也出现了传统的挡土结构很难解决的情况,文章针对这种状况,引入了石笼挡墙这种柔性构筑物,并建立了石笼挡墙的PFC2D模型,从对墙面侧向位移的量测中,提出了行车荷载对挡墙的影响深度,研究了石笼墙背土压力,对回填土的受力特性划分了5个阶段,阐明了经过初期的荷载作用,挡墙与回填土的共同体达到了平衡状态,分析了挡墙墙背的侧向位移,指出了这种柔性结构能很好地消散土压力的作用.

PFC2D Numerical Simulation on Distortion of Flexible Gabion Retaining Wall

As a new type of retaining wall,the gabion retaining wall has not been often used at home.In finished and proposing projects,there are many problems which cannot be solved by traditional retaining walls.The authors introduced a flexible retaining wall the gabion retaining wall and set up its PFC2D model.The influence depth of the retaining wall by the load is given through wall surface horizontal displacement.The loading of backfill is divided into 5 stages,which shows that the gabion retaining wall and backfill has reached an equilibrium state after earlier loading.The horizontal displacement of wall back is analyzed.It is pointed out that this flexible structure could absorb earth pressure.