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Through calculation of the finite element software, we can get the thin wall's stress state during normal working. To constrain the displacement and improve the crack resistance of the wall width direction by the two ways of bonded and non-bonded prestressed concrete application form. Explore the working state of the prestressed concrete in the two different ways, and to analyse the influence of the prestress method on the ultimate bearing capacity of the wall. The results showed that, the two kinds of prestress method can improve the stress state of concrete and improve its ultimate bearing capacity. Compared with the method of bonding, the crack resistance of confined concrete in the width direction can be improved by using the non-bonded form. Finally improve the ultimate bearing capacity of the thin wall largely. 1. Foreword Local compression is the stress state that only some of the area is under the surface of the component. Because the surface of the component is not uniform, the stress is concentrated, which makes the structure of the structure in the normal use state, the board of the first failure, eventually leading to the occurrence of the accident. In order to prevent the occurrence of the above, the stress state of the concrete is improved by the method of prestress and the finite element analysis software is used to analyze the failure mode of the wall in the thickness direction.In the case of a certain pressure area, by comparing the difference of the normal working state of 100mm thin wall and prestressed constrained the working state of the failure mode, getting the improvement of ultimate bearing capacity by the method of prestress and post tensioning method, and analyzes the influence on bearing capacity of prestressed thin wall with different thickness limit.

A new method of improving the pressure bearing capacity of the thin wall prestress