Calculation Method Of Geocell Reinforcement' Forced Deformation Based On Elastic Foundation Beam-Plate Theory

As a new type of geosynthetic material,geocell reinforcement is widely used in the treatment methods of soft foundations such as wharfs,embankments and plains.Therefore,its stress deformation mechanism is also increasingly concerned by the academic community,but its related theoretical research work is still not perfect,depending on further study and discussion.In this paper,the calculation method of the geotechnical cell stress deformation under the composite foundation will be studied systematically with two theoretical analysis of the elastic foundation beam and plate,in order to further promote the research of the development of geotechnical cell reinforcement reinforcement theory.First the timoshenko beam theory is used on the foundat ion of elastic foundations to analyze the geocell reinforcement,considering the influence of the horizontal displacement of the beam and the tangential spring stiffness of the upper and lower surfaces.Then the differential equations are given,obtained th ree variable:the horizontal-vertical coupling displacements and angles of the beam body.And the differential operator series method is used to solve the problem.After verifying the method through an engineering example,the parameters such as the height of the embankment,the thickness of the mat body,the composite elastic modulus,the ratio of the upper and lower surface friction coefficients are further analyzed in order to investigate the effect of horizontal and vertical deformation of beams.Secondly,based on the theory of elastic foundation plate,the geocell reinforcement is considered as an elastic circular plate,considering the differences in stiffness between piles and soil under composite foundations,the different frictional effects of cell-filled interfaces and the reinforcements,and the influence of longitudinal and lateral coupling deformation.Then the corresponding deformation control differential equations will be written and the Bessel function was constructed to lead to the deflection function and mid-surface displacement function of the geocell cushion in the couple reinforced composite foundation under embankment load.On this basis,using the actual project to verify the method and discussing parameter analysis.