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PVC-U inner tube laminated steel octagonal hollow axial bearing capacity of concrete columns

Author: HeZuoQun
Tutor: YangJunJie
School: Zhejiang University of Technology
Course: Structural Engineering
Keywords: PVC-U Octagon Laminated steel hollow concrete Axial compression Capacity Test Finite Element Analysis
CLC: TU398.9
Type: Master's thesis
Year: 2010
Downloads: 17
Quote: 1
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Abstract


Double skin steel tubular column is developed in the last decade , a new structural elements , it has a flexural stiffness, high capacity , ductility and toughness, easy construction and a series of advantages . Currently there are about octagonal hollow laminated steel concrete columns with axial compression and eccentric compression Mechanical Properties . In this paper, the PVC-U octagonal inner tube hollow laminated steel tubular column is an octagonal hollow sandwich with steel tubular column lookalike of the new member . The inner tube member PVC-U pipes , octagonal outer tube pipe, concentrically placed in the concrete between the tubes . And the inner tube is hollow octagonal steel laminated steel tubular column compared to this study member having light weight , low cost advantages, and PVC-U inner tube can also be utilized as a rainwater pipe . This article first hollow concrete sandwich steel , laminated steel octagonal hollow concrete columns , concrete - filled steel , plastic pipe material in the composite structure of the application of relevant research conducted a presentation , demonstration of PVC-U octagonal inner tube laminated steel tubular column -shaped hollow member and mechanical engineering practicality reasonable. Then this paper, the study conducted by axial compression test specimens were carefully designed and fabricated description describes the specimen geometry design and material selection of the relevant processes . Also a detailed description of the specimen preparation and loading the specimen loading and destruction of the whole process . Through the analysis of the test results , the paper summed up the possible failure modes of such member , and made loading process and the capacity of the relevant comparative study . The article also carried out computer components of such finite element analysis , summarized the specimen diameter to thickness ratio, the hollowness of its bearing capacity. In this paper, PVC-U octagonal inner tube hollow sandwich destruction CFT Columns form factors has been systematically studied , also its capacity and the inner tube steel octagonal hollow concrete columns were laminated steel comparative analysis , and further affirmed its engineering application value , I hope this new member can be in the future practical engineering application.

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