High‐strength steel‐wire‐mesh reinforced square concrete filled steel tubular columns: Concept and compressive behavior

IF 1.8 3区工程技术 Q3 CONSTRUCTION & BUILDING TECHNOLOGY

Structural Design of Tall and Special Buildings Pub Date : 2022-11-15 DOI:10.1002/tal.1993

M. Xiong, Gong‐Yu Xiong, Qi‐Dong Hu, Xudong Chen

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引用次数: 0

Abstract

Confinement from steel tube to concrete core is generally low in square concrete‐filled steel tubular (CFST) columns compared with their circular counterparts. To improve it, a new confining measure based on high‐strength steel wire meshes (SWMs) has been proposed in this study. Different from traditional measures usually confining the concrete core from outside of it, the SWM confines the concrete core from inside of it by utilizing interaction force between SWM and concrete. Axial compression test on short SWM reinforced CFST columns was conducted to examine the efficiency of SWM. The test results demonstrated that the compressive load‐carrying capacity of the square CFST column could be improved by 21.7% with a steel wire ratio of 1.54%. Finite element analysis was carried out to investigate some mechanical behaviors that were not captured in the test. It was revealed that the strength of SWM can be fully utilized, provided the entire section of concrete is reinforced by SWM and the SWM is placed along the middle half‐part of column. Based on the results of this study, the use of high‐strength SWM is proved an effective measure to improve the compressive performance of square CFST columns.

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高强度钢丝网方形钢管混凝土柱：概念和抗压性能

与圆形钢管混凝土柱相比，方形钢管混凝土柱从钢管到混凝土核心的约束通常较低。为了改善这一问题，本文提出了一种基于高强度钢丝网(SWMs)的新型围护措施。与传统的从外部约束混凝土核心的措施不同，SWM利用SWM与混凝土之间的相互作用力从内部约束混凝土核心。为验证SWM加固短柱的有效性，对SWM加固短柱进行了轴压试验。试验结果表明，配筋率为1.54%时，方钢管混凝土柱抗压承载力可提高21.7%。进行了有限元分析，以研究试验中未捕获的一些力学行为。结果表明，当整个混凝土截面均采用SWM加固，且SWM沿柱中部布置时，可以充分发挥SWM的强度。研究结果表明，采用高强度SWM是提高方钢管混凝土柱抗压性能的有效措施。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Structural Design of Tall and Special Buildings 工程技术-工程：土木

CiteScore

5.30

自引率

4.20%

发文量

审稿时长

6-12 weeks

期刊介绍： The Structural Design of Tall and Special Buildings provides structural engineers and contractors with a detailed written presentation of innovative structural engineering and construction practices for tall and special buildings. It also presents applied research on new materials or analysis methods that can directly benefit structural engineers involved in the design of tall and special buildings. The editor''s policy is to maintain a reasonable balance between papers from design engineers and from research workers so that the Journal will be useful to both groups. The problems in this field and their solutions are international in character and require a knowledge of several traditional disciplines and the Journal will reflect this. The main subject of the Journal is the structural design and construction of tall and special buildings. The basic definition of a tall building, in the context of the Journal audience, is a structure that is equal to or greater than 50 meters (165 feet) in height, or 14 stories or greater. A special building is one with unique architectural or structural characteristics. However, manuscripts dealing with chimneys, water towers, silos, cooling towers, and pools will generally not be considered for review. The journal will present papers on new innovative structural systems, materials and methods of analysis.