This paper involves a study of axial built-up compression member, that buckles about an axis perpendicular to the plane of connectors. In addition, an equivalent slenderness ratio is calculated by several methods. The...
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This paper involves a study of axial built-up compression member, that buckles about an axis perpendicular to the plane of connectors. In addition, an equivalent slenderness ratio is calculated by several methods. These equivalent slenderness ratios are used in comparison with the requirement of the standards: American ANSI/AISC 360-2005, Canadian CAN/CSA S16-2001 and Chinese GB 50017-2003, to calculate the ultimate loads which are compared with the experimental failure loads. From this study on built-up compression members, it is found that the shear deformation has a significant effect on the compression capacity, especially the member has large slenderness ratio of individual component due to compound buckling. It is necessary to avoid the compound buckling mode.
Code of design of steel structure and technical specification for steel of light-weight buildings with gabled frames clearly provide that the foundation anchor can't receive horizontal shear of column base, the fr...
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Code of design of steel structure and technical specification for steel of light-weight buildings with gabled frames clearly provide that the foundation anchor can't receive horizontal shear of column base, the frictional force between base plate and concrete foundation or shear lugs can receive it. If μN less than V, the shear lugs must install in column base. The condition is only considered axial force, but pretightening force different lies in anchors of column base of real projects. And if the pretightening force is added, the shear resistance of column base will increase. Based on the FEM model of column base, this paper calculates the shear resistance of column base under several different pretightening forces of foundation anchor, and analysis the influence of pretightening force. According to the results, the shear lugs must install in column base if μF less than V
In order to study the the mechanical behavior and the loading capacity of this special structure under different combined actions of load ,in this paper, the three-dimensional plate-shell element model was constructed...
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In order to study the the mechanical behavior and the loading capacity of this special structure under different combined actions of load ,in this paper, the three-dimensional plate-shell element model was constructed by the finite element procedure ANSYS, and one segment of composite box beam's special shape intersection of Beijing South Station Viaduct in positive bending region was analyzed. The mechanical behavior of the steel box-concrete composite beam at intersection was analyzed, such as the stress and deformation behavior of the composite beam under different combined actions of loads, the loading of the special shape intersection under the interaction of vertical bending and torsion and the bearing reaction under live load. Finally by the parametric analysis to the thickness of the steel girder web, the ratio of bending and torison stiffness, and the diaphragm, the influence of the parametric on the special girder was understanded clearly.
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