Mechanical response of CFRP-reinforced hollow ultra-high strength steel circular tubes under static axial compression and bending loads: Experimental and numerical investigations

IF 6.6 1区工程技术 Q1 ENGINEERING, CIVIL Thin-Walled Structures Pub Date : 2025-06-01 Epub Date: 2025-02-06 DOI:10.1016/j.tws.2025.113046

L.T. Lee, F. Azhari, A. Heidarpour

{"title":"Mechanical response of CFRP-reinforced hollow ultra-high strength steel circular tubes under static axial compression and bending loads: Experimental and numerical investigations","authors":"L.T. Lee, F. Azhari, A. Heidarpour","doi":"10.1016/j.tws.2025.113046","DOIUrl":null,"url":null,"abstract":"<div><div>This paper aims to investigate the mechanical performance of CFRP-reinforced hollow ultra-high strength steel (UHSS) circular tubular columns under static axial compression and three-point bending tests. Using CFRP sheets to strengthen steel members with the aid of epoxy as the bonding agent can increase the stiffness, strength-to-weight ratio, and corrosion resistance, which can extend the service life of structures while reducing maintenance requirements. Bare and CFRP-reinforced circular hollow section steel columns made of four different grades of steel, including mild steel (MS) grade 350 and UHSS grades 700, 800, and 1200, are examined. To explore the effect of shape, the results of circular hollow tubular sections are compared with square hollow sections. The load-displacement curves, strength and failure modes obtained from the large-scale experimental tests and nonlinear finite element (FE) models are discussed. Analytical predictions are also compared with experimental results. The outcome of this study will provide insights into the coupled effects of CFRP reinforcement and steel grade, in improving the static axial and lateral responses of the steel columns.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"211 ","pages":"Article 113046"},"PeriodicalIF":6.6000,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Thin-Walled Structures","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0263823125001405","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/2/6 0:00:00","PubModel":"Epub","JCR":"Q1","JCRName":"ENGINEERING, CIVIL","Score":null,"Total":0}

引用次数: 0

Abstract

This paper aims to investigate the mechanical performance of CFRP-reinforced hollow ultra-high strength steel (UHSS) circular tubular columns under static axial compression and three-point bending tests. Using CFRP sheets to strengthen steel members with the aid of epoxy as the bonding agent can increase the stiffness, strength-to-weight ratio, and corrosion resistance, which can extend the service life of structures while reducing maintenance requirements. Bare and CFRP-reinforced circular hollow section steel columns made of four different grades of steel, including mild steel (MS) grade 350 and UHSS grades 700, 800, and 1200, are examined. To explore the effect of shape, the results of circular hollow tubular sections are compared with square hollow sections. The load-displacement curves, strength and failure modes obtained from the large-scale experimental tests and nonlinear finite element (FE) models are discussed. Analytical predictions are also compared with experimental results. The outcome of this study will provide insights into the coupled effects of CFRP reinforcement and steel grade, in improving the static axial and lateral responses of the steel columns.

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

cfrp增强中空超高强度钢圆管在静轴压和弯曲载荷下的力学响应：实验和数值研究

本文旨在研究cfrp增强中空超高强度钢圆管柱在静轴压和三点弯曲试验下的力学性能。采用CFRP片材以环氧树脂为粘结剂对钢构件进行加固，可以提高刚度、强度重量比和耐腐蚀性，在降低维护要求的同时延长结构的使用寿命。对四种不同等级的钢材（包括低碳钢（MS） 350级和超高压钢700、800和1200级）制成的裸钢和cfrp增强圆形空心截面钢柱进行了检查。为了探讨形状的影响，将圆形空心管截面与方形空心管截面的结果进行了比较。讨论了大型试验试验和非线性有限元模型得到的荷载-位移曲线、强度和破坏模式。分析预测结果也与实验结果进行了比较。本研究的结果将为CFRP加固和钢等级的耦合效应提供见解，以改善钢柱的静态轴向和侧向响应。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文去求助

来源期刊

Thin-Walled Structures 工程技术-工程：土木

CiteScore

9.60

自引率

20.30%

发文量

801

审稿时长

66 days

期刊介绍： Thin-walled structures comprises an important and growing proportion of engineering construction with areas of application becoming increasingly diverse, ranging from aircraft, bridges, ships and oil rigs to storage vessels, industrial buildings and warehouses. Many factors, including cost and weight economy, new materials and processes and the growth of powerful methods of analysis have contributed to this growth, and led to the need for a journal which concentrates specifically on structures in which problems arise due to the thinness of the walls. This field includes cold– formed sections, plate and shell structures, reinforced plastics structures and aluminium structures, and is of importance in many branches of engineering. The primary criterion for consideration of papers in Thin–Walled Structures is that they must be concerned with thin–walled structures or the basic problems inherent in thin–walled structures. Provided this criterion is satisfied no restriction is placed on the type of construction, material or field of application. Papers on theory, experiment, design, etc., are published and it is expected that many papers will contain aspects of all three.