The New Structure Folded Plate Pile Retaining Wall And Its Design Method

To a high-filled slope which has not slope conditions, the traditional Anti slide pile structure system has a great retaining force, small damage to environment, the construction characteristics of mature technology and other characteristics. For the current slope engineering, Anti slide pile retaining structure system has become the major retaining structure system to solve the problems of high, big and difficult slope engineering. Although the Anti slide pile structure system has become a mature supporting structure system, but also has many problems that need to be solved, first and foremost is the high cost.Article in view of the "lack of constructing conditions and anchoring condition " of geological conditions, analyzing and comparing the existing traditional cantilever pile retaining structure, oblique Prestressed Cable Anchor Pull pile, portal double row piles' s deficiency,put forward a new type of retaining structure——Folded plate pile retaining wall. According to the Folded plate pile retaining wall, this paper studied the following aspects:(1)Established a system of the Folded plate pile retaining wall,which has three constituents: upper traditional retaining wall?intermediate folded plate structure and lower pile foundation.By increasing the distance of front column and back column to make the intermediate folded plate structure become a composite beam system with strong rigidity, and switch traditional bending pattern to tension and compression pattern.Reducing stress in the back pile and column by seting up upper traditional retaining wall and switching the straight pile to banked pile.(2)Established a calculation model of the Folded plate pile retaining wall. The cross section design is carried out according to the cantilever beam model, and the longitudinal section design is carried out according to the continuous beam model.(3)In addition, whether the folded plate will buckling failure is directly concerns if the folded plate structure can form a combined beam structure. The critical buckling load is derived by the energy variational principle that belong to the theory of the elastic small deflection of thin plates, and the correctness of the theoretical deduction is verified by the large finite element analysis software Ansys.(4)In this paper, the internal stress of the structure is analyzed from two aspects of theory and finite element method,and the structure effect of each part of the structure is verified,and a set of engineering design method is proposed.Finally, this paper analyzed the economy through the engineering example of pile wall plate to supply reference for future design and research.