Bending behaviour of raw coal gangue concrete-filled steel tubes

被引：0

作者：

Wu, Xiangjiao ^{[1
,2
]}

Zhao, Hui ^{[1
,2
]}

Wang, Rui ^{[1
,2
]}

Wang, Yunhe ^{[1
,2
]}

Cui, Hongzhi ^{[3
]}

Chen, Man-Tai ^{[4
]}

机构：

[1] Taiyuan Univ Technol, Coll Civil Engn, Taiyuan 030024, Peoples R China

[2] Taiyuan Univ Technol, Shanxi Key Lab Civil Engn Disaster Prevent & Contr, Taiyuan 030024, Peoples R China

[3] Shenzhen Univ, Coll Civil & Transportat Engn, Key Lab Resilient Infrastruct Coastal Cities, MOE, Shenzhen, Peoples R China

[4] Shanghai Jiao Tong Univ, State Key Lab Ocean Engn, Shanghai 200240, Peoples R China

来源：

STRUCTURES | 2025年 / 76卷

基金：

中国国家自然科学基金;

关键词：

Raw coal gangue; Concrete filled steel tube; Bending behaviour; FE models; Design methods; FLEXURAL BEHAVIOR; STUB COLUMNS; STRENGTH; MEMBERS; CFST;

D O I：

10.1016/j.istruc.2025.108989

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This paper presents an experimental and numerical study on raw coal gangue concrete-filled steel tube (RCGCFST) beams. Six RCGCFST beams were tested to evaluate the effects of raw coal gangue (RCG) replacement level, steel ratio and water-to-cement ratio under bending. The failure modes, moment versus mid-span deflection curves, and moment versus longitudinal strain responses were obtained. Results revealed that all beams exhibited overall bending deformation, with RCG content having a limited effect on the ultimate moment of RCGCFST beams. Finite element (FE) models were subsequently developed and validated against the test results. Parametric studies were conducted to investigate the influence of RCG replacement levels, steel ratios, steel yield strengths, and concrete cubic compressive strengths on the ultimate moment. Finally, six design methods of GB 50936, EC 4, AISC 360, BS5400, T/CECS 625 and ISO 16521 were employed to assess their applicability for RCGCFST specimens. In general, EC 4 provided an accurate prediction for the ultimate moment of RCGCFSTs.

引用

页数：14

共 41 条

[1]

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[2]

[Anonymous], 2009, EN ISO 6892-1

[3]

[Anonymous], 2020, T/CECS 625-2019

[4]

[Anonymous], 2004, EN 1994-1-1

[5]

[Anonymous], 2022, AISC 360-22

[6]

[Anonymous], 2005, BS5400

[7]

[Anonymous], 2018, JGJ/T 443-2018

[8]

[Anonymous], 2014, GB 50936-2014

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