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


IASS Symposium 2016

SESSION: Conceptual Design

Research on stability of a 800m double-layer spherical reticulated shell structure of Kiewitt type

< Table of Contents for Conceptual Design
  • Proceedings Name: IASS 2016 Tokyo Symposium: Spatial Structures in the 21st Century
  • ISSN: (Electronic Version) 2518-6582
  • Session: Conceptual Design
  • Pages: 5
  • Title: Research on stability of a 800m double-layer spherical reticulated shell structure of Kiewitt type
  • Author(s): Yu Zhang, Qingwen Zhang, Miaofan Li
  • Keywords: 800m-span structure, double-layer shell, complete-process analysis, initial imperfection, plastic stability
Abstract
This paper focused on the stability of 800m double-layer spherical reticulated shell structure of K6 type, based on nonlinear complete-process analysis method. A comparison was made of the buckling mode, critical load, and plastic development distribution of response by 124 examples. It summarized the reasonable values of parameters such as the span to depth ratio, rise-span ratio, initial geometrical imperfections, and unsymmetrical distribution of loads, for pyramidal system and geodesic type. And the ultimate bearing capacity was accurately obtained by considering geometric nonlinearity, material nonlinearity and initial curvature of the members. Through various parameters analysis, it gets the regularity of the plastic stability of the K6 double-layer spherical reticulated shell, which provides the basis for the selection of the super large span double layer lattice shell.

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