Analysis of Finite Element Mechanism of Axial Compressive Behavior of T-Shaped Stiffened Concrete-Filled Steel Tubular Stub Columns After Uniform Fire Exposure
作者： Yang Yu , Haiqing Liu , Yang Xu , Xuetao Lyu , Xuetao Lyu
DOI: 10.1007/S13296-021-00476-Z
关键词:
摘要: Based on the reasonable determination of material constitutive relationship and interaction model between concrete steel tube, a finite element T-shaped stiffened concrete-filled tube (TSCFST) stub column exposed to uniform fire was established, reliability verified. Through FE model, working mechanism in whole process loading analyzed detail. In axial compression, load distributions concrete, were discussed. This paper effects main factors residual bearing capacity TSCFST columns, put forward calculation formula columns after exposure.
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