The Study On Mechanical Properties And Technology Of A New Type Of Greening Type Gravity Retaining Wall

With the western construction of Chinese economic reform and the further implementation of the "The Belt and Road",the worsening ecological environment in the western region has become the focus of attention.Retaining wall,as a kind of retaining structure,has been widely used in civil engineering.The new greening type gravity retaining wall combines the characteristics of the ecological retaining wall and the traditional gravity retaining wall.And in the process of building rubble,concrete and other resources rarely used.The plant can be planted directly by the special structural form after its construction,which is convenient for greening and later maintenance.It balances the relationship between the structure and the ecology.And It conforms to the concept of "harmonious society" and "sustainable development".In the western region of China with extensive distribution of loess resources,the use of loess as a building material has technical and economic advantages.How to apply the loess to a new type of greening type gravity retaining wall structure has become the focus of this paper.How to combine the rich loess resources in the western region with the new greening gravity retaining wall structure.This paper focuses on the following aspects:1.The concept of a new type of greening type gravity retaining wall structure is introduced.And its main characteristics and comparison with the traditional retaining wall.2.The feasibility analysis of greening about cement-reinforced soil as a new greening type of gravity retaining wall structure plant germplasm matrix is carried out.It is concluded that the cement modified loess can be applied to a new type of greeningtype gravity retaining wall structure,and it can be greening.As a plant substrate,the ratio of cement admixture should not be more than 10%.3.On the basis of satisfying the feasibility of afforestation,cement modified loess is used as the experimental research of the triaxial test shear strength of new greening gravity retaining wall wall material.It is concluded that under the premise of satisfying the economic requirements and the strength requirements of cement modified loess,the5%~12% ratio of cement in the modified loess is suitable.4.In view of the remolded loess as a part of the new type of greening gravity retaining wall structure wall,the experimental study on the shear strength was carried out.It is concluded that remolded loess can be used in the construction of a new greening gravity retaining wall structure.It is suggested that the moisture content of sample preparation should be 40%~50%.5.Based on the design conception,some rationalization requirements and suggestions for the construction and design calculation of new greening gravity retaining wall are put forward.