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


IASS Symposium 2016

SESSION: Shell Structures

Mechanic behavior of elliptic paraboloid cable-braced grid shells with different joints

< Table of Contents for Shell Structures
  • Proceedings Name: IASS 2016 Tokyo Symposium: Spatial Structures in the 21st Century
  • ISSN: (Electronic Version) 2518-6582
  • Session: Shell Structures
  • Pages: 10
  • Title: Mechanic behavior of elliptic paraboloid cable-braced grid shells with different joints
  • Author(s): Ruo-qiang Feng, Xi Wang, Wei-jia Xu, Min Ma, Yang Liu
  • Keywords: bolted joints, stability, grid shell, mechanic behavior, buckling load
Abstract
The mechanic behavior of joints has a significant effect on the mechanic behavior of cable-braced grid shells. Taking elliptic paraboloid cable-braced grid shells as an example, the mechanic behavior of cable-braced grid shells with different joints was studied in this paper. The main conclusions are as follows. The rotational stiffness and ultimate load of bolted joints are below those of improved bolted joints. As a result, the buckling load of the elliptic paraboloid cable-braced grid shells with bolted joints is lower than that of the elliptic paraboloid cable-braced grid shells with improved bolted joints. The distribution of the maximal compression stress of the tubes was similar to that of the structural displacement when the cable-braced grid shell collapsed. The joint stiffness of the grid shells should be greater than 20% of the rigid joint stiffness.

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