华侨大学叶勇--中文主页-- Effects of core concrete initial imperfection on performance of eccentrically loaded CFST columns

叶勇(土木工程系副主任)

学位：工学博士学位
职称：教授

硕士生导师

学位：工学博士学位
办公地点：土木学科实验大楼505办公室
电子邮箱：
职务：土木工程系副主任

学科：结构工程

当前位置: 中文主页 >> 科学研究 >> 论文成果

Effects of core concrete initial imperfection on performance of eccentrically loaded CFST columns

点击次数：

发表刊物：

Journal of Structural Engineering-ASCE

摘要：

Gap between the outer steel tube and core concrete is a type of initial imperfection that may exist in concrete-filled steel tubular (CFST) columns. This paper is devoted to investigate the influence of the gap on the performance of eccentrically loaded CFST columns. Twelve CFST column specimens and two reference hollow steel tubes were tested under eccentric compression. The main test parameters included the gap type (circumferential and circular-segment) and gap ratio. A finite element model was established to simulate the behavior of the CFST columns with gaps, and the model was validated against the experimental results in terms of failure mode, load versus deformation response, and ultimate strength. Based on the experimental and numerical investigations, the performance of eccentrically loaded CFST columns with gaps was analyzed. Parametric studies were then conducted to reveal the influence of different parameters on the ultimate strength of the CFST columns with gaps. Finally, the maximum allowable gap ratio in practice was proposed for the eccentrically loaded CFST columns with circumferential gaps, and a simplified model was proposed to predict the ultimate strength of the composite columns.

论文类型：

期刊论文

页面范围：

2016,142(12):04016132

是否译文：

否

收录刊物：

SCI

合写作者：

叶勇,廖飞宇

通讯作者：

韩林海

附件：

Han et al (2016)-Effects of core concrete initial imperfection on performance of eccentrically loaded CFST columns.pdf

上一条： Finite element analysis on axial compressive behavior of circular concrete filled bimetal tubular short columns

下一条： Flexural behavior of stone beams reinforced with prestressed NSM CFRP bars

个人简介

叶勇，博士，教授，硕士研究生导师。现任华侨大学土木工程学院土木工程系副主任、现代组合结构和抗震防灾创新团队党支部书记。

从事结构工程方向的教学与研究工作，主持国家自然科学基金项目2项(面上、青年各1项)、福建省自然科学基金面上项目2项、中国博士后科学基金项目1项、福建省高校青年自然基金重点项目1项等科研项目。在国内外主流学术期刊及会议上发表论文近100篇，其中SCI、EI收录50余篇，1篇论文获英国土木工程师协会(ICE)年度出版奖。