Nonlinear Stability of A Single-layer Hybrid Grid Shell
Author(s): |
Jianguo Cai
Yixiang Xu Jian Feng Jin Zhang |
---|---|
Medium: | journal article |
Language(s): | Latvian |
Published in: | Journal of Civil Engineering and Management, September 2012, n. 5, v. 18 |
Page(s): | 752-760 |
DOI: | 10.3846/13923730.2012.723325 |
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. |
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10362950 - Published on:
12/08/2019 - Last updated on:
12/08/2019