Performance of concrete-encased CFST box members under bending

被引：47

作者：

Han, Lin-Hai ^{[1
]}

An, Yu-Feng ^{[1
]}

Roeder, Charles ^{[2
]}

Ren, Qing-Xin ^{[3
]}

机构：

[1] Tsinghua Univ, Dept Civil Engn, Beijing 100084, Peoples R China

[2] Univ Washington, Dept Civil Engn, Seattle, WA 98195 USA

[3] Shenyang Jianzhu Univ, Sch Civil Engn, Shenyang 110168, Peoples R China

来源：

JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH | 2015年 / 106卷

基金：

中国国家自然科学基金;

关键词：

Concrete-filled steel tube (CFST); Concrete-encased; Box; Bending; Finite element analysis (FEA); Flexural capacity; WALLED STEEL TUBES; ANALYTICAL BEHAVIOR; REINFORCED-CONCRETE; STUB COLUMNS;

D O I：

10.1016/j.jcsr.2014.12.011

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This paper described a series of tests and finite element analysis (FEA) on large-scale concrete-encased concrete-filled steel tube (CFST) box members under bending. Eight full-scale specimens, including six concrete-encased CFST box and two corresponding reinforced concrete (RC) box members were tested to investigate the influence of variations in diameter of steel tube (from 74.9 mm to 102.2 mm) and sectional height (from 840 mm to 1260 mm) on the performance of concrete-encased CFST box members under bending. The failure modes and performance of concrete-encased CFST box members under bending were investigated and compared with those of corresponding RC box members. A finite element analysis (PEA) model was developed to analyse the flexural performance of concrete-encased CFST box members, including full-range analysis of moment-curvature relation, loading transfer and effect of shear-span-to-depth ratio. Finally, a parametric study was carried out based on the PEA modelling, and a simplified model was proposed for predicting the flexural capacity of concrete-encased CFST box members. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：138 / 153

页数：16

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