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Theoretical Analysis on Interfacial Stresses of Plated Beam

Author: LiuXiaoDan
Tutor: HaoShengWang
School: Yanshan University
Course: Structural Engineering
Keywords: Externally bonded plates Interfacial stress Reinforcement Prestressed Debonding
CLC: TU375.1
Type: Master's thesis
Year: 2011
Downloads: 26
Quote: 0
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Abstract


Externally bonded sheet the reinforcement beam flexural capacity of the reinforcement method , widely used in engineering practice . Interfacial debonding the key to restricting the reinforcement effect . Based on the theory of elasticity , derived externally bonded plate reinforcement beam interface method to the analytical expression of the stress and shear stress , pursuant to which the interface stress distribution characteristics . Paste sheet thickness outside through research , externally bonded plate elastic modulus , colloidal thickness of the adhesive layer , colloidal adhesive layer elastic modulus and plate end from the the different external stickers plate bearing distance reinforcement beam interface stress , improved interface stress the ways and means of distribution . This paper focuses on the reinforced beams and externally bonded plates both curvature does not match the interface normal and shear stresses . The comparative analysis of the interfacial stress distribution , the influence of colloidal bonding layer of elastic deformation induced by the flat-slab curvature does not match the distribution of interfacial stresses . Further derived analytically on the basis of flat slab curvature does not match the assumptions of the analytical expression for the interfacial stress considering the shear deformation of the flat-slab vertical axial plane interface , the shear deformation of the interfacial stress distribution impact. Taking into account the practical engineering and foreign affixed to the plate reinforcement method often prestressed further derive the analytical expression of the interfacial stress prestressed plate reinforcement beam flexural capacity , and no the prestressing and different initial prestress role under interface stress distribution characteristics comparative analysis . Beam flexural capacity interfacial stresses reinforcement of prestressed plates externally bonded plate thickness , externally bonded plate elastic modulus , colloidal thickness of the adhesive layer , colloidal adhesive layer elastic modulus from the board side bearing a different distance and other factors impact.

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CLC: > Industrial Technology > Building Science > Building structure > Concrete structure,reinforced concrete structure > Reinforced concrete structures > Girder
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