Analysis of the Progressive Collapse of Buildings underHigh Temperatures Using Successive ApproximationTechnique

作     者：Luciano Lins Vieira Luciano Mendes Bezerra Ramon Saleno Yure Rubim Costa Silva Welington Vital da Silva Emanuella Guntzel Barbosa Valdeir Francisco de Paula 

作者机构：Department of Civil EngineeringUniversity of BrasíliaBrasíliaDF-70910-900Brazil Department of Civil EngineeringCEUBBrasíliaDF-70790-075Brazil Federal Institute of EducationScience and Technology of GoiásGoianiaGO-74055-110Brazil 

出 版 物：《Journal of Civil Engineering and Architecture》 (土木工程与建筑（英文版）)

年 卷 期：2020年第14卷第1期

页      面：46-60页

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

主　　题：Progressive collapse fire column. 

摘      要：This paper presents an investigation of the disproportionate collapse of multi-store steel buildings in a natural fire situation due to the progressive failure of their *** this purpose,it is intended to evaluate the effects of the redistribution of stress and vertical displacements of columns with the evolution of the temperature addressing,also,the impacts of the localized faults of these structural *** addition,another objective of this paper is the development of a practical analysis approach,which is called by successive *** a methodology,advanced computational techniques were developed to predict the structural behavior of the building as the temperature reduces the strength and stiffness of its structural *** the parametric study,the overall response of the building was investigated through fire simulations in many *** results showed that the phenomenon of redistribution of stresses that occur during the heating period is essentially due to the reduction in the modulus of elasticity of the *** addition,the study pointed out that the use of advanced computational techniques through the use of successive approximations technique is an excellent alternative to study the progressive collapse of buildings subject to high temperatures.