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原文传递 Field Testing of a Decommissioned Skewed Steel I-Girder Bridge: Analysis of System Effects

题名：	Field Testing of a Decommissioned Skewed Steel I-Girder Bridge: Analysis of System Effects
其他题名：	AASHTO.(2013a)."LRFD bridge design specifications."6th Ed.,2013 Interim Revisions,Washington,DC.
正文语种：	英文
作者：	Jennifer McConnell
关键词：	Girder bridges;Steel bridges;Field tests;Finite element method;Moment distribution;Inelasticity;Metal and composite structures
摘要：	This paper describes the field testing of a decommissioned, skewed, steel I-girder bridge and the resulting behavior that was observed. To more thoroughly evaluate the behavior observed in the field testing, where a load 17 times the design load was applied, a finite element model of this bridge was created, which illustrates the behavior of this structure at an even greater load and in greater detail than could be achieved in the field. The field and finite element analysis (FEA) results for this bridge were compared with expectations based on current bridge specifications. These results show that there is significant reserve capacity in this common bridge configuration, relative to both current bridge design and rating specifications and the maximum load that could physically be applied to the structure. This is attributed to transverse redistribution of force enabling the strength of this bridge to far exceed the strength of the limiting girder, which is termed the system effect in this work. Conceptual formats that could be adopted to better capture this effect in future bridge specifications are also discussed.
出版年：	2015
论文唯一标识：	P-26Y2015V141N01012
英文栏目名称：	Technical Papers
doi：	10.1061/(ASCE)ST.1943-541X.0001112
期刊名称：	Journal of Structural Engineering
拼音刊名(出版物代码)：	P-26
卷：	141
期：	01
页码：	111-123