Study On The Separation Prestressed Anchorge Sheet Pile Retaining Wall

With China's economy develop rapidly, the construction of road traffic into the fast lane of the large-scale development, in particular, the sections of mountain road construction often need to fill in more square, which need to use a suitable retaining structures supporting. In recent years, Prestressed Anchor Pile the plate high retaining wall as a new type of retaining structures, roads, railways and other transportation construction has been widely used, and have achieved good results. Separation Prestressed Anchor Pile Wall belongs to the anchor cable a Pile Wall, it has a simple structure and clear force, for construction, etc.,which can effectively shorten the duration and reduce the project cost, has a large number of applications in engineering.However, at this stage, the analysis does not clear that the mechanism of interaction between the various parts of the pile and wall structure of prestressed Anchor, so the method of design calculation method is not perfect.This paper analyze the above problem from following aspects:1) Summary overview of Prestressed Anchor Pile Wall status quo at home and abroad, citing a representative example of engineering application, calculation methodology, the Prestressed Anchor pile and wall applications and research issues.2) Select the form of physical works of the four typical experiments on the working point of separation Prestressed Anchor pile wall structure to prototype analysis, an overview of the four test-point, the test content and test methods, according to the construction process force structure changes, the test process is divided into the filling conditions (denoted by A conditions), the anchor cable tension conditions (denoted by B conditions) and the observation conditions in the work (denoted as C conditions).3) Based on field test results, the study concluded the backfill soil pressure under various operating conditions (including the size and distribution characteristics of the vehicle loads caused by lateral pressure), piles, pile anchorage segment geotechnical fill and anchor cable the deformation of the system of coordinalion of the law, pile internal forces.the anchor cable tension variation.4) Research and analysis of various conditions, summed up the most unfavorable conditions in the various operating conditions, the best stress state, the role of Prestressed Anchor and Anchor initial prestress as well as in practical applications prestressed Anchor pile wall the height of the joint force.5) Describes the traditional earth pressure as well as in Middle-earth pressure of the test method for determining.6) Summarizes the commonly used structure calculation method, the cantilever piles, anchor piles displacement compatibility method, deformation constraints foundation coefficient of France for a brief introduction.7) To the elastic pile, described in detail the method of calculation of elastic pile, and calculated according to the elastic pile K method of the preparation of a simple and practical calculation procedure.8) Through the calculation of an engineering example, draw loaded section in various stages of construction of pile internal forces, the anchoring section of the pile internal forces compared with the experimental results verify.By test analysis, I have a force law about separate Prestressed Anchor pile and wall stress in the various stages of the construction, summed up the method of structure calculation at this stage, and on this basis, have a introduction about the method of the elastic pile beam on elastic foundation France, provide the reference and help for engineering design in the future.