Journal
THIN-WALLED STRUCTURES
Volume 120, Issue -, Pages 355-365Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.tws.2017.09.019
Keywords
Aluminum latticed shell; Stability behavior; Stressed skin effect; Joint semi-rigidity; Stability ultimate capacity calculation formula
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Funding
- China Postdoctoral Science Foundation [2016M600188]
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In recent years, aluminum alloy single-layer latticed shell has been extensively used in civil and industrial infrastructure. The elasticity modulus of aluminum alloy is low, the rigidity of aluminum joints are weak and the roof load transmission path is different. Therefore, the stability performance of this dome is unique. To clarify the stability performance of aluminum alloy single-layer latticed shell, over 500 aluminum alloy single-layer spherical latticed shells were analyzed with nonlinear finite method. The suggested values of rise/span ratio and initial imperfection were presented. The influencing coefficients of initial imperfection, material nonlinearity and stressed skin effect on stability bearing capacity were obtained. And the structural stability safety coefficient and the approximate calculation formula for stability bearing capacity of aluminum alloy single-layer spherical latticed shell were derived. The influences of joint semi-rigidity were investigated. All the aforementioned results provide a scientific basis for future stability design of aluminum alloy single-layer spherical latticed shell structure.
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