The Finite Element Analysis Of Pre-Stress Steel Bar Restricted Concrete Column

The dissertation is devoted to studying the structure model pre-stressed steel bar restricting the concrete column. The model is put forward by combining the pre-stress technique and the restricted concrete technique. The analysis is mainly brought out by finite element method, using the Ansys. In the passage, the author mainly discuss three part: building the finite element model, analysising the section stress on the model and advancing the intension of the column.First, build the finite element model for the pre-stress model. The dimension of the element model is put forword by the real dimension in the practice. It is important to choose reasonable formula and solving method.Second, analysis the stress on the section of model. In the section, there is some area weak restriced. In the axes section, we can find the restring force could transmiting. It is easy to find that the broken area is the middle section between the pre-atress bar.Third, in order to improve the weak restricted area, the author encrypt the steel bars. After encrypting, the weak restricted area is largely reduced and the carrying capacity of the column is improved.