The Analysis Of Statically Indeterminate Prestressed Concrete Structural

The technique of prestressed concrete is used more and more widely because of its advantage in the field of concrete. Continuous beam has some advantage constracted to simply supported beam, for example, less design bending moment and deflection, biggish resisted lateral movement stiffness and more margin of safety. But there still have prodigious deficiency to it, in particular to the secondary internal force , secondary bending moment and redistribution of them of prestressed concrete continuous beam.This paper summarized the secondary bending moment caculate method of statically in determinate structural. And then based on the literature [33] studied the form and conception of secondary bending moment of concrete beam, answered the essence of secondary bending moment while loading. A historical in theory is carried on studying non-boned statically indeterminate concrete beam while loading. A finite element model and a computer program for non-bonded statically indeterminate concrete beam analysis are developed. Then constracted to the result of ANSYS program. Analysis results show that the nonlinear program is applicable with sufficient accuracy for practical use.