Spiral Bound High-strength Concrete Shaft Pressure On The Stirrups Of Performance Tests And Finite Element Analysis

With the building structure to the development of high-level structure, bound by common stirrups of the concrete beam fat-fat concrete structure constraints become an important factor in development. As China's economic construction and the continuous development of high-strength steel and concrete high-strength material is a reinforced concrete structure in the new period of development laid the foundation. A large number of experiments show that the spiral bound stirrups concrete columns with high capacity, performance and deformation of the advantages and broad prospects for the development of a structure. Papers through pilot study as a high-strength steel stirrups to have good expectations of concrete results bound to promote high-strength materials in the actual works of great theoretical significance and practical value.Papers by 33 high-strength concrete spiral bound stirrups mechanical properties of the axis of compression tests to study the high-strength concrete spiral bound by the stirrups axial compression performance, visual contrast to the stirrups of different intensity, stirrup pitch, spiral stirrup cross-section form the specimen bearing capacity, the ability of deformation. At the same time, bound by a spiral effect coefficient stirrups and concrete analysis of its binding force of the impact. From three to start with the guidelines of the damage has been derived constraints concrete square spiral stirrup-strength increase the coefficient formula, lateral pressure formula, and improve the analysis of the strength factor, lateral pressure, increase strength and value of binding effect between the coefficient Relations. Use of finite element software ANSYS stirrup bound spiral of high-strength concrete axial compression of the mechanical properties of nonlinear finite element analysis, test results and finite element analysis of the results of the comparison basically consistent with that selected the finite element model is reasonable And can better predict a square concrete-bound spiral stirrups of the performance of the force.