加竹筋三轴剪切及有限元对比试验

Comparative test of bamboo triaxial shearing and finite element

以攀枝花学院足球场竹筋高填方边坡为例,通过在试验室制备了重塑昔格达土、三七灰土以及加竹条三七灰土试样,并进行三轴剪切试验对比了三种试样的三轴剪切特性,获取进行有限元试验的基本物理参数,分析了竹筋和灰土对于土体的改性机理。通过在ABAQUS建立基于摩尔—库仑塑性理论的三轴剪切试验模型,模拟三轴剪切试验的全过程,对比了加竹筋灰土有限元模型分析结果和三轴试验机数据,为边坡长期稳定性和地震动荷载下的稳定性分析的有限元建模作基础。

Taking the high-filled football stadium slope of Panzhihua college as an example, the paper prepares three kinds of samples including remodeling Xigeda-soil, panax notoginseng lime soil and panax notoginseng with bamboo in the lab, compares their triaxial shearing features with triaxial test, and obtains basis physical parameters of finite element experiment, and then analyzes the bamboo and lime soil modification mechanism upon the soil body. Through establishing triaxial shearing test model of Mohr-Coulomb theory on ABAQUS, it simulates the whole process of triaxial test, and compares the data of finite element model with bamboo lime soil to triaxial test, which has laid a foundation for finite element modeling of stability analysis of slope stability and seismic dynamic load.