Calculation And Analysis Of H-Type Anti-Slide Piles And Its Engineering Application

h-type anti-slide pile is a special retaining structures, it is composed of the long piles, the short piles, the beams, the bearing plates and the retaining plates, and it has three functions of load bearing, stop slip and support. The cantilever section of the structure is mainly subjected to the load of the filler, and the structural part of the cantilever section is mainly subjected to the thrust of the slope. Through the support of the crossbeam and the bearing plate to the upper load, the horizontal thrust on the following part of the long pile is significantly reduced, and the deformation of the filler above the beam can be better control. The fill in the cross beam causes the center of gravity of the structure move backward and it improves the overall stability of the system. Therefore, the h type anti slide pile is the best form in the stress control and the settlement control. The stress of the structure is obviously different from the other supporting structures, and many parameters are selected according to experience in the design of structure, so it is difficult to meet the requirements of engineering design.Firstly, the mechanism and load of the h anti slide piles are analyzed, the calculation method and structure calculation model of the soil pressure load are determined, the calculation method of internal force of structure is given, and the structure design flow and reinforcement design method are obtained.Then, the numerical analysis of h anti slide pile is carried out, the typical structure is analyzed by 3D numerical analysis, the function and distribution of the filler and the train load, the magnitude and distribution of the earth pressure between piles and soil, the Internal force distribution and the structural deformation characteristics are mainly analyzed.The sensitivity analysis of the influence of the four parameters of the thickness of the filler, the thickness of the overburden, the spacing of the piles and the spacing of the longitudinal piles to the structure is carried out by establishing different three-dimensional or plane numerical model, and the influence of the parameters variation on the internal force deformation of the structure is mainly analyzed.Finally, the structure calculation and reinforcement design are carried out for actual engineering structure, and the structural internal force, the structural deformation and the earth pressure distribution of the structure were monitored in the field. A comparative analysis of the results of field monitoring and design calculation is made.In summary, through theoretical calculation and analysis, combined with numerical analysis and field monitoring, the calculation method and structure design method of h type anti slide pile is analyzed, and the relevant results could be used to guide the practical engineering application.