Experimental and numerical investigation on cyclic behavior of Q1100 ultra-high strength steel H-section compressive-bending members about strong-axis

IF 5.7 1区工程技术 Q1 ENGINEERING, CIVIL Thin-Walled Structures Pub Date : 2024-10-30 DOI:10.1016/j.tws.2024.112651

Yun Zhang, Lu Yang, Kelong Xu

引用次数: 0

Abstract

Q1100 refers to ultra-high strength steel (UHSS) with a nominal yield strength of 1100 MPa. Hysteretic tests were conducted on seven Q1100 UHSS H-section welded columns to assess their hysteretic performance. The hysteretic performance was evaluated through hysteresis curves, damage phenomena, energy dissipation, ductility, and load-carrying capacity. The impact of the width-to-thickness ratio and axial pressure ratio on the hysteretic behavior was also investigated. A validated finite element model was utilized to analyze the hysteresis behavior, influencing factors, and the applicability of Eurocode 3 width-to-thickness ratio limits, resulting in proposed seismic design recommendations.

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Q1100 超高强度钢 H 型截面强轴受压弯曲构件循环行为的实验和数值研究

Q1100 是指名义屈服强度为 1100 兆帕的超高强度钢 (UHSS)。对七根 Q1100 超高强度钢 H 型焊接柱进行了滞回试验，以评估其滞回性能。通过滞后曲线、损伤现象、能量耗散、延展性和承载能力对滞后性能进行了评估。此外，还研究了宽厚比和轴压比对滞回行为的影响。利用经过验证的有限元模型分析了滞后行为、影响因素以及 Eurocode 3 宽厚比限制的适用性，从而提出了抗震设计建议。

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

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.