Research On Stability Of Prestress Concrete Composite Box Girder With Corrugated Steel Webs

Corrugated steel webs prestressed concrete box girder bridge successful will concrete and steel two materials together. Improve the efficiency in the use of materials. And corrugated steel webs prestressed concrete box girder structure is beautiful. Have a good application prospect. But, corrugated steel webs prestressed concrete girders structure in the application of the present domestic less, Design and construction level would be further developed. The main purpose of this study is to corrugated steel webs prestressed concrete combination box girder bridge, Through the finite element analysis of the calculation and theoretical equation of, research corrugated steel webs of prestressed concrete box girder webs of stability and a series of key design method.Finite element analyses combined with theoretical formula derived on the stability of the steel corrugated webs was conducted. By means of finite element analyse obtain the critical shear stress of the steel corrugated webs with different boundary conditions. According to the principle of energy method, deduce the critical shear stress of the steel corrugated webs with different boundary conditions. Will the results of finite element theory and the related results of formula get compared the analysis, understand the corrugated steel webs boundary conditions of specific simulation method.With the current available test and research results of finite element for basis, The comparison and analysis of the scholars put forward the corrugated steel webs shear buckling strength calculation formula, each of the formula of calculation result and the results are compared and analyzed.Research the corrugated steel webs structure stability of design method, Given the corrugated steel webs combination box girder bridge design process corrugated steel webs of shear rigidity calculation method and the method of calculating the shear stress, And some Suggestions of the corrugated steel examination of the local buckling strength, overall shear shear strength and related buckling buckling strength calculation method.