Study On Behavior Of The Concerning Regions Of The Vertically Tensioned Prestressed Concrete Beam Under Load

The vertically tensioned prestressed concrete is a new construction technology. It is the stick post-tensioned prestressed concrete structures, but different from conventional post-tensioned prestressed in the construction details. The vertically tensioned prestressed concrete structure which saved corrugate pipe, liquid cement, anchorage device, spiral reinforcement and some of steel strand, which has economic advantage in actual using. Now, greater theoretical and applied research were achieved in the design and construction of bridge structures, but this technology is not yet in housing construction among the applications of prestressed concrete structures, this paper based on summarized studies carry out the following researches:1.Firstly,the background,phylogeny,research situation of the prestressed concrete were introduced, and introduced the concrete concept and current status of the research of the vertically prestressed concrete.2.Base on the studies of the vertically tensioned prestressed concrete and the finite element, described the reinforced concrete structures in the basic method of finite element analysis ,and made a further explanation of the reinforced concrete units and a general nonlinear problem solving method in ANSYS, established the finite element analysis and calculation model under different parameters vertically tensioned prestressed concrete beams in the tension in place, yet anchored pre-and post-tensioned position.3. Simulated the vertically tensioned prestressed concrete beams in the tension phase of the situation by software ANSYS. Study the laws of concrete regional deformation in adhesive anchor position and bolt position.4. The key positions (adhesive anchor position and bolt position) under various conditions were analyzed by nonlinear finite element, numerical results were analyzed to verify the selection of prestressing tendon anchorage length, analyzed the distribution of concrete adhesive anchor position and bolt position fixed area, compared and analyzed partial enhancement measures, proposed measures to strengthen the structure of the key parts.