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Analyzing on Mechanical Behavior of Continuous Steel-concrete Composite Beam

Author: WangWei
Tutor: TanYanQiu
School: Hebei University of Engineering
Course: Structural Engineering
Keywords: Continuous steel-concrete composite beam Negative moment Redistribution of internal force ANSYS
CLC: TU398.9
Type: Master's thesis
Year: 2009
Downloads: 57
Quote: 0
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Abstract


In recent years,the composite structure has already developed into one kind of new structures in the steel structure and reinforced concrete structure. Compared with the reinforced concrete structure,it might reduce the weight,the function of earthquake,the component section size,the foundation construction cost,increases the effective space, saved the mold working procedure and the template,reduces the construction cycle, increases the ductility of component and structure and so on.Compared with the steel structure,it may reduce the quantity of steel,increases the rigidity,the stability and the integrity,the enhancement structure fire-resistance and durable and so on.The steel-concrete composite beam has been researched extensively in domestic and foreign, however imperfect aspects still exist in design theory and practical application.Because of this,analyzing on mechanical behavior of continuous steel-concrete composite beam is carried on in this article.The biggest superiority of composite beam is that the tensile strength of steel and compression strength of reinforced concrete structure can be reflected.But in the negative moment of continuous steel-concrete composite beam,the steel is compressed and the concretes frange plate is in tensile strength.Therefore,the research on the mechanical Behavior of negative moment is a key in analyzing on continuous steel-concrete composite beam.After studied it in a great deal of documents,I found that there are some imperfect aspects in the study on negative moment.In this article,the theoretical calculation and the design method is summarized first,then established two-span continuous composite beam and analyze the result using the ANSYS10.0 finite element software.Through the analysis ,the dispersed regular pattern of direct stress and shear stress on the web plate under negative moment is induced.The redistribution of internal force of continuous steel-concrete composite beam is understood.Through transformation of the concretes frange plate thickness,steel frange plate thickness,the web plate height and thickness.The conclusion that basis on the strong influence to weak influence of beam’s stress and deflection the parameters are concretes frange plate thickness,web plate height,steel frange plate thickness,thickness the web plate thickness had been achieved.Through the analyzing on mechanical behavior of continuous steel-concrete composite beam,I hope the designer will get some reference in the conclusion.

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CLC: > Industrial Technology > Building Science > Building structure > Composite structure > Other composite structures
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