The Detection And Assessment Technology And Reuse Research Of Existing Prestressed Hollow Plate Beam

Highway bridges are throat, function of the use of a direct impact on the whole smooth lines.At present, highway on our country has substantial operations in the prestressed concrete bridge. These bridges in the construction and use of the process, because of the design, construction, use and other issues as well as the material itself with the passage of time, environmental erosion, such as the role of a number of factors, inevitable to some extent will have damage. Prestressed concrete bridge because of its good features, has become the current roads and bridges in the most widely used type of bridge. And prestressed concrete hollow plate beam is leaps and bounds because of its larger capacity, structure, performance , construction convenient , save material , easy to achieve standardization and factory construction, reliable product quality, construction lifting equipment, etc. can be solved easily. At a bridge construction in particular are widely used high-grade highways. For this type of bridge reconstruction and alterations. The original plate girder component reuse can be achieved, so that we can bring about considerable savings in construction funds, reduce environmental impacts.Therefore, this paper conducted a prestressed hollow plate beam causes of disease analysis, the scene of destructive testing, both the bearing capacity of prestressed hollow plate beam analysis research,the main contents and the results are as follows:(1) This article systematically carried out both prestressed hollow plate beam disease investigate, analyze, and the cause of research. A detailed study of both prestressed hollow plate girder types and causes of disease.(2) Hollow plate beam through a detailed look detected,know both of prestressed hollow plate girder main damage type.In order to adopt appropriate remedial approach.Partial repair and reinforcement of reusable plate girder.(3) Through the two prestressed concrete hollow slab beams carrying capacity of destructive testing. Analysis of these two films beam damage situation,failure mechanism and damage the whole process of stress. Learn and master the two-chip beam at normal use loads and limit load bearing capacity of the structural stiffness and ultimate failure modes such as load-bearing capacity. And compared with theoretical values. Analysis of these two films Leung can re-use or not.Thesis findings Shows that,At present most of the available pre-stressed hollow plate girder there are more or less defects. After careful inspection of the exterior and its partial repair or reinforce the overall Department. Existing prestressed hollow plate beam to meet the requirements of durability and bearing capacity.