The Research On Engineering Properties Of QingRong Intercity Railway Reinforced Earth Retaining Wall

Reinforced soil retaining wall is a kind of composite structure composed with fill, reinforcement and panel. In recent years, the flexible retaining structure is gaining popularity in high-speed railway embankment construction.But the vertical deformation standard during the railway operation is very high. Therefore, the engineering characteristics of reinforced earth retaining wall is needed to do a more comprehensive study, the deformation calculation and control methods of reinforced earth retaining wall become the key.The important research findings of interaction mechanism between soil and reinforcement of reinforced soil theory were reviewed, the main contentsand analysis method on stability analysis of reinforced soil retaining wall were clarified. Establishes the simplified horizontal and vertical deformation model based on the formulas of some assumptions and deductions by using mechanical knowledge. Based on some basic assumptions, establish the level of reinforced earth retaining wall deformation and vertical subsidence model, according to the level of distortion factors, given the level of distortion is calculated and derived deformation calculation retaining wall at the upper level of the course load. From the embankment, foundation and consolidation deformation three aspects of the settlement formulas are derived. Summarize calculations of the composite foundation.Combined with the Qing(Dao)Rong(Cheng) Intercity Railway RongCheng Station the force and deformation of soil and reinforcement were analyzed and summarized in reinforced earth retaining wall construction process.According the design scheme to bury earth pressure cells, flexible displacement meter, single-point settlement gage and other components. Based on reinforced soil retaining wall field test data, analysing of the basal soil pressure, the lateral earth pressure, lateral earth pressure coefficient, fracture surface, the inner and outer soil pressure of panels foundation, Geogrid strain, vertical deformation horizontal and deformation of reinforced soil retaining wall.Finite element method is an important way to test the design of reinforced retaining wall, the numerical simulation results with field test measured and theoretical values were analyzed. This paper simulates the basal vertical soil pressure, the lateral earth pressure, deformation and rupture surface retaining wall of reinforced soil retaining wall.For studing the structural behavior and use condition of reinforced soil retaining wall under the action of vehicle load behavior, to design the field exciter test scheme.