The Simulation On Vertical Loads Characteristics Of Bagged Sand Retaining Wall

In China's rapid national economic construction,infrastructure construction plays a vital role in the construction of infrastructure,retaining wall is an extremely important structure.There are many types of retaining walls,gravity retaining wall and reinforced earth retaining wall,gravity retaining wall is to increase the stability of the retaining wall by its own gravity,resistance to external load,gravity retaining wall is resistance to lateral soil pressure using the wall body weight and maintain in the wall soil under the action of pressure stability.The gravity retaining wall is widely used,the type of building materials is also very rich,such as natural stone,conventional stone,concrete,in addition,the use of bags of gravel,cement bags,bags of sand retaining wall soilbags masonry materials gradually applied in engineering construction.Reinforced earth retaining wall is to use geosynthetics to place in the soil interior,surface and each layer of soil,which can strengthen the soil strength,prevent soil erosion,and improve the stability of retaining wall.Most of the soil composite materials have lower cost,better tensile properties,corrosion resistance and overall performance.These characteristics provide good conditions for large-scale application of reinforced earth retaining walls.The reinforced earth retaining wall is now used in the fields of building,environment,garden and so on,besides the application in the fields of highway,water conservancy and mine.With sand as filling material to replace the gravel geotextile bag,the sandbag piled into the retaining wall for slope supporting system called soilbags retaining wall.The retaining walls constructed by traditional building materials are complex in operation,long in cycle and high in cost.In contrast,the construction of geotextile bag retaining wall is convenient and the cycle is short,and it can be reused in the case of the intact quality of the original geotextile bag,which saves the natural resources and the engineering cost.But the research on the application of geo bag retaining wall is relatively few in china.Indoor model test is an effective method to study the variation of soilbags retaining wall,indoor model test were divided into three groups,the test variable is the vertical load soilbags retaining wall width and wall filled in,constantly explore the soil to the wall in the process of soil loading.Numerical simulation is an important way to analyze and calculate engineering examples.Finite element analysis of engineering examples can better simulate the stress and deformation of engineering.In this paper,the ABQUS finite element simulation software is used to carry out the two-dimensional simulation analysis of the model test of the retaining wall of the geotextile bag retaining wall,for comparative analysis:(1)sand retaining wall subsidence filling under uniform load.The wall;(2)sand retaining wall in uniform distribution of different height position of the wall and the wall horizontal displacement under load;(3)in uniform earth pressure distribution and load transfer law inside the wall and the wall.After the end of 2D numerical simulation,this paper has established a three-dimensional soilbags retaining wall model instance,application for the analysis of soilbags retaining wall in engineering practice,then analyzes the relevant changes of contrast in such a model for soilbags retaining wall horizontal displacement of wall surface,the wall back fill level the vertical soil pressure and settlement wall,the mechanism to better study the soilbags retaining force and gravity retaining wall with common advantages compared.