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A platform for research: civil engineering, architecture and urbanism
Post-fire axial compression properties of welded hollow spherical joints
Abstract Fire disaster-induced collapse rarely occurs for space grid structures because of their high redundancy and their fire protection design. Consequently, with reasonable evaluation and repair, most space grid structures after fire can still be used. The post-fire axial compression properties of welded hollow spherical joints, which have been commonly used in space grid structures, were studied through experimental and numerical analyses. Then, the influence of factors such as material mechanical properties, loading condition and plastic residual deformation on the post-fire mechanical properties were analyzed. A calculation formula was presented to evaluate the post-fire bearing capacity of welded hollow spherical joints.
Highlights Test on pre-damaged welded hollow spherical joints after exposure to fire. Residual mechanical behavior and failure mode were obtained. Finite element analysis was developed to study the post-fire residual behavior. Mechanical behavior significantly changed with increasing exposure temperature and residual deformation. Calculation methods were proposed to estimate residual bearing capacity.
Post-fire axial compression properties of welded hollow spherical joints
Abstract Fire disaster-induced collapse rarely occurs for space grid structures because of their high redundancy and their fire protection design. Consequently, with reasonable evaluation and repair, most space grid structures after fire can still be used. The post-fire axial compression properties of welded hollow spherical joints, which have been commonly used in space grid structures, were studied through experimental and numerical analyses. Then, the influence of factors such as material mechanical properties, loading condition and plastic residual deformation on the post-fire mechanical properties were analyzed. A calculation formula was presented to evaluate the post-fire bearing capacity of welded hollow spherical joints.
Highlights Test on pre-damaged welded hollow spherical joints after exposure to fire. Residual mechanical behavior and failure mode were obtained. Finite element analysis was developed to study the post-fire residual behavior. Mechanical behavior significantly changed with increasing exposure temperature and residual deformation. Calculation methods were proposed to estimate residual bearing capacity.
Post-fire axial compression properties of welded hollow spherical joints
Wang, Lan (author) / Liu, Hongbo (author) / Zhou, Yuan (author) / Chen, Zhihua (author)
Journal of Constructional Steel Research ; 161 ; 187-200
2019-07-01
14 pages
Article (Journal)
Electronic Resource
English
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