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原文传递 Experimental Investigation on Stub-Column Behavior of Cold-Formed High-Strength Steel Tubular Sections

题名：	Experimental Investigation on Stub-Column Behavior of Cold-Formed High-Strength Steel Tubular Sections
正文语种：	英文
作者：	Jia-Lin Ma;Tak-Ming Chan;Ben Young, M.ASCE
作者单位：	Univ, of Hong Kong
关键词：	Cold-formed steel; Finite element; Geometric imperfection; High-strength steel; Residual stress; Stub column; Tubular section; Metal and composite structures.
摘要：	This paper presents the experimental investigation on the compressive behavior of cold-formed high-strength steel tubular stub columns. In this paper, the nominal 0.2% proof stress of the high-strength steel was 700, 900, and 1,100 MPa. A total of 25 stub column tests on circular, rectangular, and square hollow structural sections were conducted. Geometric imperfections and load-deformation histories were reported and assessed. The experimental results were compared against the design values calculated from the Australian, European, and North American codes, and the corresponding compactness criteria were assessed. A finite-element model, which incorporated the varying material properties, was described, and the influence of geometric and material imperfections was also evaluated. The finite-element results successfully captured the experimental observations and can be adopted for future parametric studies. DOI: 10.1061/(ASCE)ST. 1943-541X0001456. © 2015 American Society of Civil Engineers.
出版日期：	2016.05
出版年：	2016
期刊名称：	Journal of Structural Engineering
卷：	Vol.142
期：	NO.05
页码：	04015174