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原文传递 Experimental Evaluation of the Fire Performance of Simple Connections

题名：	Experimental Evaluation of the Fire Performance of Simple Connections
正文语种：	英文
作者：	Erica C. Fischer, Ph.D., P.E.; Kristi L. Selden, Ph.D.;Amit H. Varma, Ph.D.
作者单位：	Purdue Univ
关键词：	Double angle; Single angle; Shear tab; Fire; Metal and composite structures.
摘要：	This paper summarizes the results of experimental investigations on steel composite beams with simple connections at elevated temperatures. In the United States, three different types of simple connections are most commonly used in building construction with steel composite beams: (1) double-angle connections; (2) single-angle connections; and (3) shear-tab connections. A testing program was conducted to examine the structural behavior of all three of these connections at elevated temperatures. Each specimen consisted of a steel composite beam attached to a loading frame with simple connections. The specimens were subjected to controlled heating and cooling curves while the loading frames were fire protected and designed to remain in the elastic range. The shear-tab connections showed the largest connection rotation, but they fractured during the cooling phase of the tests. The prying of the angles in the double-angle and single-angle connection during the tests provided ductility to prevent fracture during the cooling phase of the experiments. The double-angle connections demonstrated the least connection rotation and excellent performance during the tests. DOI: 10.1061/(ASCE)ST.1943-541X .0001664. © 2016 American Society of Civil Engineers.
出版日期：	2017.02
出版年：	2017
期刊名称：	Journal of Structural Engineering
卷：	Vol.143
期：	NO.02
页码：	04016181