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IASS 2016 Tokyo Symposium: Spatial Structures in the 21st Century


IASS Symposium 2016

SESSION: General: Towers & Temporary Structures; Preservation

A design method for the large-diameter steel tube in high rising structures

< Table of Contents for General: Towers & Temporary Structures; Preservation
  • Proceedings Name: IASS 2016 Tokyo Symposium: Spatial Structures in the 21st Century
  • ISSN: (Electronic Version) 2518-6582
  • Session: General: Towers & Temporary Structures; Preservation
  • Pages: 6
  • Title: A design method for the large-diameter steel tube in high rising structures
  • Author(s): Zhaohua Lu, Renle Ma, Xue Bai
  • Keywords: large-diameter steel tube, local stability, reverse balance flange, longitudinal flange
Abstract
Due to the demand of the architecture, function and appearance, a kind of large-diameter steel tube has been gradually used in the high rising structures. Unlike the lattice tower, the design of large-diameter steel tube requires real concern to ensure the local stability. According to Chinese code, the diameter-thickness ratio of steel tube should be lower than 100 , thereby resulting in wasting a large scale of materials. Moreover, the steel tubes are bulky and hard to transport. This paper proposed a novel design method of large-diameter steel tube. In order to improve the local stability, flanges, stiffened plates and steel frames were used to ensure the local stability of steel tubes. In addition, a numerical analysis was performed. Considering the transportation, the large-diameter tube should be divided into pieces by the circumferential and the longitudinal flanges. In this way, the lifting weight can also be reduced.

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