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Analysis Of The Temperature And Shrinkage Stress Of Over-Long Framed Structure With After-Poured Band And Expansion Reinforcing Strip

Posted on:2010-03-01Degree:MasterType:Thesis
Country:ChinaCandidate:S F LiFull Text:PDF
GTID:2132360278462257Subject:Structural engineering
Abstract/Summary:PDF Full Text Request
In this paper, temperature reaction of real structure subjected to temperature load is imitated by two story structure model, and temperate reaction of the frame structure with different lateral rigidities, structure lengths, slab thickness and concrete strengths had been researched by the finite element program of ANSYS. Firstly whole deformation and later displacement law of frame structure are obtained according to four different temperature loads, and temperature stress and deformation of the slab are studied. Secondly distribution feature and law of the temperature stress of slab in frame structure on the basis of different lateral rigidities, structural length, slab thickness are analyzed; Finally the concrete of early shrinkage had been discussed in the light of stress compensation method, further the most disadvantageous combination of the slab maximal temperature stress in the frame structure has reached in the four temperature loads, and the structure temperature and the concrete of shrinkage developing law had been reached.In the paper, the environment restraining and border condition had been simulated, and the design proposal had been advanced in the light of temperature and stress of after-poured band. And once again, according to concrete limit deformation concept, the bond spacing, location and closing time had been researched considering the concrete initial stress ,and the major influence factor had been studied mainly.Expansion reinforcing strip in frame structure had been simulated by the finite element method, the slab stress and displacement change had been analyzed when expansion reinforcing strips were installed in the structure. The influence of the location and width of expansion reinforcing strips on the structure internal force and displacement and the relationship between width and quantity had been researched, which may have certain guiding significance.
Keywords/Search Tags:Over long structure, Temperature stress, shrinkage, after-poured band, expansion reinforcing strip
PDF Full Text Request
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