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Nonlinear stability of a single-layer hybrid grid shell

    Jianguo Cai Affiliation
    ; Yixiang Xu Affiliation
    ; Jian Feng Affiliation
    ; Jin Zhang Affiliation

Abstract

This paper presents a study of a hybrid grid shell, which is made of quadrangular meshes diagonally stiffened by pre-tensioned thin cables. The construction of the hybrid structure by translating a spatial curve against another spatial curve is firstly described. Then the elasto-plastic buckling analyses of the perfect hybrid structure and the corresponding single-layer lattice shell are carried out, and the influence of the asymmetric load on the failure loads is discussed based on a finite element model. Furthermore, the different shapes and sizes of imperfections are considered in this study. Two schemes of imposing imperfections are chosen: the first several eigenvalue buckling modes and the deformed shape of the loaded structure obtained from a geometrical non-linear analysis are chosen as the imperfection shape. Finally, the effects of different structural parameters, such as the rise-to-span ratio, beam section dimension, area and pre-stress of cables and boundary conditions, on the failure loads are investigated.

Keyword : hybrid structure, grid shell, stability, elasto-plastic, failure load

How to Cite
Cai, J., Xu, Y., Feng, J., & Zhang, J. (2012). Nonlinear stability of a single-layer hybrid grid shell. Journal of Civil Engineering and Management, 18(5), 752-760. https://doi.org/10.3846/13923730.2012.723325
Published in Issue
Sep 28, 2012
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