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- 저자 : Xinxin Quan (검색결과 2 건)
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Tensile Capacity of Concrete-filled Square Tubular Columns Connection with External Stiffening Ring
Bin Rong,Xinxin Quan,Ruoyu Zhang,Guangchao You 대한토목학회 2019 KSCE JOURNAL OF CIVIL ENGINEERING Vol.23 No.10
A static tensile experiment was carried out to investigate the flexural bearing capacity of external stiffening ring joints between concrete-filled square steel tubular column and steel beam. All of four specimens showed similar failure modes that external stiffening ring and tube flange were torn up. Nonlinear finite element model was developed with ABAQUS software to simulate the test and analyze the mechanism properties of specimens. Comparison of yield and ultimate capacity indicated that finite element analysis is valid. Moreover, on the basis of the failure modes, the distribution of stress, the deformation features and load transferring paths, which were achieved from experiments and numerical simulation, a theoretical method taking tensile membrane action of tube faces into consideration to evaluate the bearing capacity was proposed with help of yield line theory. The outcome of comparison between theoretical and experimental values clarify good applicability of this analytical method.
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Bin Rong,Guangchao You,Ruoyu Zhang,Xu Ma,Xinxin Quan 국제구조공학회 2018 Steel and Composite Structures, An International J Vol.28 No.2
In order to investigate mechanical properties in the core area of Square Hollow Section(SHS) column connection with external stiffening ring, four specimens were tested under the static tension load. The failure modes, load-displacement curves and strain distribution were analyzed to study the mechanical properties and the load transfer mechanism of the core area of connections. The connections behave good ductility and load-bearing capacity under the static tension load. Parametric analysis was also conducted, in which the thickness of steel tube, extended width and thickness of the stiffening ring were considered as the parameters to investigate the effects on mechanical properties of the connections. Based on the experimental results, an analytical method for the bearing capacity of connection with external stiffening ring under the static tension load was proposed. The theoretical results and the experimental results are in good agreement, which indicates that the theoretical calculation method of the bearing capacity is advisable.
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