Mechanical behaviors of glulam beam-to-column joints strengthened with fiber-reinforced polymer composites: Experimental investigation, numerical analysis and ANN prediction model

IF 7.1 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES Composite Structures Pub Date : 2025-04-01 Epub Date: 2025-02-19 DOI:10.1016/j.compstruct.2025.118983

Yasemin SIMSEK TURKER, Semsettin KILINCARSLAN, Mehmet AVCAR

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Abstract

Because of its respective advantages, such as high load-bearing capacity relative to their bulk, low embodied carbon and renewable properties, and sustainability, wood is becoming more popular in engineering structures. Due to several effects, some deterioration occurs in wood structures over time, and the load-bearing elements lose their properties, especially the beam-to-column joints. This study investigates the mechanical behaviors of basalt fiber-reinforced polymer (BFRP) and carbon fiber-reinforced polymer (CFRP) glulam beam-to-column joints. Beam-to-column connections are realized using three methods and are wrapped 2, 3, and 4-times. Cycle loading load–displacement experiments are performed on beam-to-column joints. Vital mechanical behaviors, including maximum load-carrying capacity, energy consumption capacity, and stiffness value, are investigated. The data obtained from the experimental study are estimated by creating a model with artificial neural networks (ANNs) and finite element (FE) analysis. The obtained findings show that the effect of reinforcement improves the rigidities, energy consumption capabilities, and load-carrying capacities of beam-to-column joints. In addition, it is observed that the load-carrying capacity of beam-to-column joints increases with the increase in the number of plies. Furthermore, it is determined that the mechanical behaviors of the beam-to-columns strengthened with CFRPs are better than those for BFRPs.

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纤维增强聚合物复合材料加固胶合木梁柱节点的力学行为：试验研究、数值分析和人工神经网络预测模型

由于其各自的优势，例如相对于其体积的高承载能力，低隐含碳和可再生特性以及可持续性，木材在工程结构中越来越受欢迎。由于几种影响，随着时间的推移，木结构会发生一些劣化，承重元件失去其性能，特别是梁柱节点。本文研究了玄武岩纤维增强聚合物（BFRP）和碳纤维增强聚合物（CFRP）胶合木梁柱节点的力学行为。梁柱连接使用三种方法实现，并包裹2、3和4次。对梁柱节点进行了循环荷载-位移试验。关键的力学行为，包括最大承载能力，能量消耗能力和刚度值，进行了研究。通过人工神经网络（ann）和有限元（FE）分析建立模型，对实验研究得到的数据进行了估计。结果表明，配筋的作用提高了梁柱节点的刚度、耗能能力和承载能力。此外，梁柱节点的承载能力随着层数的增加而增加。此外，还确定了cfrp加固梁柱的力学性能优于bfrp加固梁柱的力学性能。

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来源期刊

Composite Structures 工程技术-材料科学：复合

CiteScore

12.00

自引率

12.70%

发文量

1246

审稿时长

78 days

期刊介绍： The past few decades have seen outstanding advances in the use of composite materials in structural applications. There can be little doubt that, within engineering circles, composites have revolutionised traditional design concepts and made possible an unparalleled range of new and exciting possibilities as viable materials for construction. Composite Structures, an International Journal, disseminates knowledge between users, manufacturers, designers and researchers involved in structures or structural components manufactured using composite materials. The journal publishes papers which contribute to knowledge in the use of composite materials in engineering structures. Papers deal with design, research and development studies, experimental investigations, theoretical analysis and fabrication techniques relevant to the application of composites in load-bearing components for assemblies, ranging from individual components such as plates and shells to complete composite structures.