The Mechanism And Evaluation Of Engineering Effect Of Prestressed Anchor Cable Sash

Prestressed anchor cable sash is a new form of support structure with the large-scale application of prestressed cable technology in the landslide governance and slope reinforcement project. With the development of China's transport, the issues of highway slope disease is especially outstanding, and prestressed anchor cable sash has played a more and more important role with advantages of cheap, convenient for construction, reinforcement of notable results and use of wide range. But, the practice of prestressed anchor cable sash is ahead of theory at present, and the mechanism and engineering results are to be further explored and analyzed.This thesis based on the subject of Study on the effect estimate of slopes support and the methods in YuanMo expressway of Western transportation construction projects. The contents of this paper are as follow:1. Based on the relevant information in the literature, this paper introduced several types of methods of theoretical calculation which are existed and common; Compared with these methods, we give the reasonable method of prestressed anchor cable sash, and through by the filed tests, we verificate the reliability of the method.2. Choosing three typical unstable slopes which are supported by prestressed anchor cable sash, we carried on field tests. In these tests, we researched the distribution of internal force in beams and vertical fin, the size and distribution of resistance of foundation, the rules of loss of anchor prestressed, and the mechanism of prestressed anchor cable sash ,all of these provide basis for the research of the evaluation of prestressed anchor cable sash.3. Choosing a typical unstable slope, we built a digital model with the method of finite element strength reduction, and then we can have a verification of the tests.4. Through on the research of evaluation of engineering effect in slopes, we proposed evaluation criteria and methods of engineering results in prestressed anchor cable sash, and we chose typical slope that supported by prestressed anchor cable sash to made an evaluation. All of these provide reference for related slope treatment project.