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The Ultimate Bearing Capacity Of Circular Steel Tube Joints And Full-scale Test

Posted on:2004-07-13Degree:MasterType:Thesis
Country:ChinaCandidate:S N ZhuFull Text:PDF
GTID:2192360122967008Subject:Structural engineering
Abstract/Summary:PDF Full Text Request
Finite-element study on the ultimate strength of planer overlap tubular K-joints and full scale tests on the ultimate strength of CHS joints are researched in this dissertation.Planer gap tubular K-joints are one of the most fundamental joint configurations in tubular structures. However, the brace member of K-joint may meet at the chord member partially in the many structures. So there are great difference between behavior of overlap tubular K-joints and that of gap tubular K-joints. Analysis of nonlinear finite-element for ultimate strength of 81 overlap tubular K-joints with ANSYS program is carried out in this dissertation. The influence of nondimensional joints parameters β,γ, τ and ov on failure mode and ultimate strength of overlap tubular K-joints is studied. Simultaneously, 27 tubular gap K-joints are analyzed for comparative purposes.Test study is the most important research method of ultimate strength of tubular joints. Because the size of tubular joints used in practice engineering is always large, the full scale tests study is of significance much more. Full scale tests on Six CHS joints, including 2 K-joints, 3 KK-joints and 1 KKT-joints, used in roof structures of the palaestra in Chang sha is carried out in this dissertation. Then the tests result is compared with results of finite-element analysis and design formulae and the difference of them are analyzed. The results of full scale tests in this dissertation can reinforce international database of test and numerical analysis results for unstiffened tubular joints. And database of test of KKT-joints is produced. Finally, available references for constituting and consummating of CHS design formulae are given.
Keywords/Search Tags:planer overlap tubular K-joints, analysis of nonlinear finite element, ultimate strength, full scale tests, design formulae
PDF Full Text Request
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