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原文传递 Column Base Connections for Hollow Steel Sections: Seismic Performance and Strength Models

题名：	Column Base Connections for Hollow Steel Sections: Seismic Performance and Strength Models
其他题名：	Adegoke,I.O.,and Kemp,A.R.(2003)."Moment-rotation relationships of thin endplate connections in steel beams."Advances in Structures:Proc.,Int.Conf.on Advances in Structures(ASSCCA'03),Vol.1,Swets&Zeitlinger,Lisse,Netherlands,119–124.
正文语种：	英文
作者：	A. M. Kanvinde
关键词：	Column base plates;Seismic design;Steel connections;Anchor bolt tension;Metal and composite structures
摘要：	The seismic response of exposed hollow steel section columns to base plate connections is examined through a series of eight experiments. The prototype-scale tests investigate a range of variables including base plate size and thickness, column size, and anchor rod layout (four rods in two rows, and eight rods in three rows). The specimens were subjected to cyclic flexural loading and instrumented to provide direct (rather than inferred) measurement of tension forces in the anchor rods. All the specimens showed excellent deformation capacity, with a stable hysteretic response for base rotations as large as 0.057–0.13 rad. Three specimens failed by fracture of the weld between the column and the plate, whereas five did not fracture. Evaluation of the test data against the current design approach prevalent in the United States suggests that (1) the design approach is reasonably conservative but (2) does not address the effect of the third (i.e., central) row of anchor rods; as a result, it cannot be used to design them. A new design method is presented that explicitly incorporates the third row of rods. The new approach is evaluated against the test data and it is determined that the new approach reflects the internal mechanics of the connections in an improved way while providing more accurate estimates of forces in the rods. Recommendations for the design of the connections are outlined, along with ongoing work that leverages the deformation capacity of these connections for displacement-based design. The limitations of the study are summarized, especially in terms of challenges to the generalization of its findings.
出版年：	2015
论文唯一标识：	P-26Y2015V141N07007
英文栏目名称：	Technical Papers
doi：	10.1061/(ASCE)ST.1943-541X.0001136
期刊名称：	Journal of Structural Engineering
拼音刊名(出版物代码)：	P-26
卷：	141
期：	07
页码：	53-65