An Analysis Method of Composite Slab Beam Element Considering the Residual Stress Effect of Orthotropic Slabs
A technology of orthotropic plates and composite plate girders, which is applied in the analysis of materials, bridges, and force measurement, can solve problems such as deviation, complex force, and large number of plates, and achieve less degrees of freedom and meet the requirements of calculation accuracy , the effect of high calculation accuracy
Active Publication Date: 2021-11-09
SOUTH CHINA UNIV OF TECH
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Problems solved by technology
In fact, for orthotropic steel decks, especially trapezoidal-rib orthotropic steel decks, the number of plates is large and the stress is complex. If the stiffeners composed of several plates are simply Conducting research will inevitably lead to a certain deviation between the research results and the actual situation
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[0076] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0077] The present invention takes the steel box girder trapezoidal rib orthotropic bridge deck of the Hong Kong-Zhuhai-Macao Bridge direct access channel as the engineering background, and proposes a composite plate girder element analysis method considering the welding residual stress effect of the orthotropic steel bridge deck, which is used for analysis The orthotropic steel bridge deck is welded by the deck roof and trapezoidal ribs. Among them, the roof of th...
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Abstract
The invention discloses a combined slab girder element analysis method considering the residual stress effect of orthotropic slabs, which is used for analyzing orthotropic steel bridge decks welded by bridge deck top plates and trapezoidal ribs. Among them, the roof of the bridge deck is analyzed by flat shell elements, and the sub-plates constituting the trapezoidal ribs are analyzed by plate girder elements. The welding residual stress of the roof and trapezoidal ribs is obtained through the residual stress self-balance condition and the stress-strain relationship The initial deformation of the top plate and the left and right webs of the trapezoidal rib, the analysis method of the composite plate beam element has the advantages of less degrees of freedom and high calculation accuracy, so it is especially suitable for the structural analysis of the trapezoidal rib orthotropic plate.
Description
technical field [0001] The invention relates to the field of welding technology, in particular to an analysis method of a composite plate beam unit considering the residual stress effect of an orthotropic plate. Background technique [0002] Anisotropic steel bridge decks are widely used in long-span bridges, and accurate and in-depth analysis of their mechanical properties has very important theoretical significance and engineering value. In recent years, many scholars regard the stiffeners constituting the orthotropic steel bridge deck as conventional rectangular sections, or analyze them according to the equivalent stiffness. In fact, for orthotropic steel decks, especially trapezoidal-rib orthotropic steel decks, the number of plates is large and the stress is complex. If the stiffeners composed of several plates are simply Conducting research will inevitably lead to a certain deviation between the research results and the actual situation. Relatively speaking, the fin...
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IPC IPC(8): G01N3/00
CPCG01N3/00G01N2203/0075G01N2203/0282G01N2203/0676G01N2203/0682E01D2/04E01D19/125G01N2203/0214G01N2203/0023G06F2119/14G06F30/13G06F30/20G06F2111/10G01L1/00
Inventor 马牛静王荣辉朴泷
Owner SOUTH CHINA UNIV OF TECH