Concrete In Different Constraints Under Local Compression Failure Analysis

Because of the pressure load of concrete structures in the Council insufficient bearing capacity under construction accident caused increasing year by year, the question becomes concrete local compression can not be ignored. In previous works, for concrete problems in general, local compression spiral arrangement of stirrups or steel mesh method to enhance the compressive strength of the concrete parts of the Bureau of pressure, but the pressure is not obvious anti Council, but also caused a lot of steel waste. With the development of prestressing techniques for solving concrete local compression brings new ways to further improve the analysis of concrete in the field of local compression, is very meaningful.The topic on local compression resistance of concrete to start three forms, namely plain concrete block, steel mesh joined the concrete block, adding tendon concrete block. ANSYS software to add specimen axis, eccentric local pressure, by comparing the stress cloud chart and crack development under different loading conditions, combined with the value obtained by the mechanical characteristics of the ultimate bearing capacity and the characteristics of the different forms of concrete block. Finally, the analysis results with theoretical calculations were compared with results of concrete laws in local compression process. Finally, comparing different forms of crack to carry out the test block, the optimum pressure concrete anti-bureau system.Results of this study to make concrete aspects of local compression was supplemented and improved, and provides a new way to resolve on the basis of previous, to develop new norms play a concrete reference.