高流态粉煤灰混合料路基三背回填有限元分析

Finite Element Analysis of High-Flow Fly Ash Mixture Subgrade Backfill

利用ANSYS10.0通用有限元软件,建立了模拟遵义至毕节高速公路高流态粉煤灰混合料回填路基三背回填体的有限元模型,利用有限元的方法对流态粉煤灰回填体的力学响应进行分析。分析了高流态粉煤灰三背回填体在行车荷载、自重等作用下的变形特性,预估沉降量,并分析计算了流态粉煤灰对工程构造物的作用,为高流态粉煤灰三背回填的设计、施工起到了指导作用。

In this paper, general-purpose finite element software ANSYS10.0 is utilized to set up a finite element model simulating the backfill body of high flowing fly ash mixture filled subgrade of Zunyi-Bijie Expressway, and the mechanical response of flowing fly ash backfill body is analyzed. The paper analyzes the deformation characteristics of high flowing fly ash backfill body under the action of traffic load and deadweight, estimates the settlement, analyzes and calculates the effect of flowing fly ash on structures, which has a certain guidance effect to the design and construction of high flowing fly ash backfill.