Study On The Performance Of Prestressed Reinforced Soil Structure In The Application Of Differential Settlement

The main contents of this paper are to add reinforced material in reinforced soil structure,and put forward the concept of prestressed reinforced soil structure.Prestressed reinforced soil structure is a kind of new structure composed of the traditional reinforced soil structure,the vertical prestressed material into the reinforced concrete inclusions.Under the action of prestressing force,this structure can more restrict the lateral displacement and vertical settlement within the soil,and further increase the strength and overall stability of the reinforced soil structure.In this paper,a series of indoor model tests were carried out on the factors influencing the performance of prestressed reinforced soil structures and the application of the differential settlement engineering.The main content of the test is to set up three sets of comparative tests,using a 2m × 0.4m × 0.75m(length × width × height)of the model slot,the model groove in the prestressed reinforced soil structure were three groups of comparative test the study.The conclusions are:(1)The prefabricated reinforced soil structures were filled with fillers and fillers with different properties,and their structural properties were modeled.The performance of prestressed reinforced soil structures with different materials under different bearing capacity is studied.The results show that the performance of the two samples is better than that of the filling material.The results show that the deformation and sedimentation of the two samples are relatively small.(2)Set different prestressing force,study the strength and stability of prestressed reinforced soil structure and so on,and analyze the effect and mechanism of non-uniform settlement.The experimental results show that the larger the prestressing force is,the smaller the deformation of the test model is,the overall settlement is reduced and the stability is enhanced,which is better for the overall performance of the prestressed reinforced soil structure.(3)set different cantilever length.The settlement process of the samples under different cantilever length is studied,and the characteristics of the performance change are analyzed and summarized.The results show that the longer the cantilever length,the stronger the deformation of the specimen,the more prone to damage,the stability is poor.(4)Under the condition of different working conditions,the equation equation of the deformation is fitted according to the settlement of the structure.Then,the prestressing force is applied to the equation,and the rigidity of the specimen is obviously improved,which can be approximated to the continuous structure,Finally,the equivalent height of the prestressed reinforced soil structure is calculated by the approximate differential equation of the deflection curve of the cantilever beam.The model of predicting settlement curve is calculated by choosing Poisson curve model,and the model curve is verified by experiment.