In order to explore the fire-resistant properties of the steel staggered truss framing system(SSTFS), a numerical simulation study of the whole elasto-plastic structural response process of SSTFS subjected to the stan...
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In order to explore the fire-resistant properties of the steel staggered truss framing system(SSTFS), a numerical simulation study of the whole elasto-plastic structural response process of SSTFS subjected to the standard fire curve was conducted with the finite element method by using a plane staggered truss structure *** evolution of the internal forces and displacements with temperature from the start of fire exposure to the complete failure of whole structure was *** influences of variables like fire mode,fire location and mechanical load level were *** results indicate that under fire the collaborative relationship of components leads to the obvious internal force redistribution of the truss members exposed to *** plastic deformation has been developed through a longer *** influences of fire on the whole structure are constrained in local *** SSTFS shows a good fire-resistant *** there are mainly two fire modes for SSTFS,namely a fire breaking out in the truss floors and in the open floors which leads to significantly different responses for the *** those cases proposed in this paper reasonably designed based on the loads at room temperature,when the truss layers are exposed to fire,yield of the mid span of the top chord occurs firstly,but when the open layers are in fire,the external columns are the first components to *** the limiting temperature for the complete failure of the structure is slightly higher for the former than the latter.
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