Design And Application Of Timbering Structure Of Pre-stressed Anchor-cable In High Rock Slope

For recent years, with the development of our country's economy and the enlargement of the scale of the foundation establishment, the engineering and natural landslide has been becoming more and more serious. The methods of preventing and controlling landslide are also highly regarded. The trellis beams with pre-stressed anchor is a new method for preventing and consolidating high landslide and popularly applied in railway,highway and water conservancy project. It links up the anchor engineering with the cement trellis beams and can reinforce the deep and shallow landslide. However, the research of the anchor principle is plenty now, but the internal force study of the trellis beams is limited, so the design of the beams is usually based on the engineering experience, and there is no code for it. Therefore, the study of beams in the structure of trellis beams with pre-stressed anchor has large real sense.This thesis is based on the model of the Winkler elastic ground-beam and improves some defects of its principle which mainly include that the ground-factor is not the only number, it doesn't mention the function of shear in the ground and the influence of the friction between the trellis beams and the ground. It brings up three compute model: the varied ground-factor compute model, the double parameters elastic ground-beam model, the analysis of considering friction and supply its principle answer. It programs the double parameters elastic ground-beam with the method of finite difference by matlab language. Moreover, I analyze the load passing-on law after loading on the trellis beams and with the principle of the half elastic infinite space body. After that, I expound the entire design process of the trellis beams with the pre-stressed anchor with the improved compute model. Then, I analyze the influence of the internal force of the trellis beam by the some kinds of design parameters. At last, the paper makes use of the above principle to design an engineering example to verify its feasibility.