CFRP-strengthened shear walls: Seismic testing, structural behavior and size effect

IF 5.7 1区工程技术 Q1 ENGINEERING, CIVIL

Thin-Walled Structures Pub Date : 2025-04-08 DOI:10.1016/j.tws.2025.113277

Binlin Zhang , Liu Jin , Ou Zhao , Fengjuan Chen , Xiuli Du

引用次数: 0

Abstract

This study investigates the size effect on the seismic performance of Carbon Fiber Reinforced Polymer (CFRP)-strengthened shear walls through experimental and analytical approaches. Twelve CFRP-strengthened shear wall specimens with varying widths (600 mm to 1800 mm) and CFRP ratios (0.00 % to 0.21 %) were tested. The results revealed that both nominal shear strength and seismic performance indicators exhibited size-dependent behavior. Specifically, as wall width increased from 600 mm to 1800 mm, the nominal shear strength decreased by up to 40.0 %, while ductility and energy dissipation factors were reduced by 51.2 % and 45.3 %, respectively. Additionally, with an increasing CFRP ratio, the nominal shear strength increases, while the size effect gradually diminishes. Based on these findings, size-dependent formulas were established to describe the influence of structural size and CFRP ratio on the nominal shear strength of CFRP-strengthened shear walls.

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CFRP 加固剪力墙：抗震测试、结构行为和尺寸效应

本文通过实验和分析方法，研究了碳纤维增强聚合物（CFRP）增强剪力墙抗震性能的尺寸效应。试验选取了12个不同宽度（600mm ~ 1800mm）、CFRP比（0.00 % ~ 0.21%）的CFRP增强剪力墙试件。结果表明，名义抗剪强度和抗震性能指标均表现出尺寸依赖性。当墙宽从600 mm增加到1800 mm时，公称抗剪强度降低40.0%，延性和耗能系数分别降低51.2%和45.3%。随着CFRP比的增大，公称抗剪强度增大，尺寸效应逐渐减弱。基于这些发现，建立了尺寸相关公式来描述结构尺寸和CFRP配比对CFRP加固剪力墙名义抗剪强度的影响。

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.