Composite Slab Anti-sliding Structure Design Theory And Research Of Application

With the increase of China's infrastructure construction scale and extension to mountainous area, appear a lot of slope and landslide problems. The most widely used in slope and landslide is anti-slide pile,The traditional anti-sliding pile of retaining structure is almost rectangular section,and the hand excavation is adopted,it consume a lot of manual labor, and the intensity of labor is strong.There exist dangers when excavating pit of pile,Large amount of concrete material consumption.With the incrasing of the mechanization level,mechanical hole is adopted,so the round section pile is emerged,although the intensity of labor is reduced by mechanical hole and the work efficiency is increased, when it is constant cross section,materials is wasted due to the bending capacity of round section pile is less than the rectangular section pile,so there is less practical application for round section pile which adopt the mechanical hole. So, on the basis of retaining wall reinforcement technology, research the mechanical construction and saving resource of anti-sliding retaining structure have great significance.According to the development of construction technology of mechanical grooving in underground engineering,new complex anti-sliding structure whcih is composite slab is proposed in this graduation thesis.On the premise of meeting the stability of landslide,the purpose of mechanical construction and saving material is reached.This graduation thesis mainly depends on the subject ?combination slab composite anti-sliding structure research?, using the theoretical derivation, numerical simulation and analysis of the model test method study two structures, based on the analysis of the stress and deformation characteristics of structures under different geological conditions,the main influencing factors, setting condition and the proportion of size, etc, put forward two kind of structures internal force calculation method.The main research conclusions are as follows:(1)The internalconstruction force computing method of frame theory and elastic foundation beam theory can be adopted in ?-shaped structure.(2)The ?-shaped structure of thrust transfer among soil, according to the results of numerical simulation, it is concluded that structure in the cohesive soil of thrust transfer coefficient may take 0.6651, gravel soils may take 0.5049, the breeze of the rock may take 0.5902.(3)The internal construction force computing method of composite pile theory can be adopted in?-shaped structure: Numerical simulation results indicate that the selected section when the ratio of width and thickness is less than 5, the influence of the cross section width is the same as the rectangular section pile, the calculation method is reasonable.(4)The bearing capacity of ?-shaped structure is superior to the ?-shaped structure. The?-shaped structure in indoor test of bearing capacity is 1.35 times of the ?-shaped structure.