A simplified modelling strategy for FRCM-strengthened masonry panels subjected to the in-plane loading

IF 7.1 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composite Structures Pub Date : 2025-07-04 DOI:10.1016/j.compstruct.2025.119452

Paolo Zampieri , Riccardo Piazzon , Bartolomeo Pantò

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引用次数: 0

Abstract

This paper applies the discrete macro-element method (DMEM) to validate a simplified modelling strategy for the nonlinear in-plane response of masonry panels strengthened by Fabric Reinforced Cementitious Matrix (FRCM) systems. Following the general DMEM strategy, the presence of continuous strengthening fibre-reinforced composite layers applied on the external faces of the masonry wall has been described using 1D nonlinear links simulating the tensile failure of the reinforcement and its shear-delamination from the masonry substrate. Specifically, the masonry element and the FRCM layers have been simulated considering an equivalent homogeneous continuum material, discretised using a regular mesh of elastic-shear-deformable discrete elements interacting along their rigid edges through nonlinear discrete interfaces. The numerical analyses were conducted using the OpenSees software platform by simulating the experimental diagonal compression tests available in the literature. The results of the analyses are presented in terms of stress–strain curves, failure mechanisms and stress contours. The comparisons with the experimental observations have evidenced the capability of the adopted simplified modelling strategy to accurately predict the nonlinear and ultimate behaviour of masonry panels strengthened by FRMC systems with a potential limited computational burden.

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面内荷载作用下frcm加固砌体面板的简化建模策略

本文应用离散宏元法（DMEM）对织物增强胶凝基质（FRCM）加固砌体面板非线性面内响应的简化建模策略进行验证。根据一般的DMEM策略，使用一维非线性链接模拟钢筋的拉伸破坏及其从砌体基材上的剪切分层，描述了在砌体墙外表面施加的连续增强纤维增强复合材料层的存在。具体来说，砌体单元和FRCM层的模拟考虑了等效的均匀连续材料，使用弹性-剪切-变形离散单元沿其刚性边缘通过非线性离散界面相互作用的规则网格进行离散。数值分析采用OpenSees软件平台，通过模拟文献中可用的对角压缩实验进行。分析结果包括应力-应变曲线、破坏机制和应力轮廓。与试验结果的对比表明，所采用的简化建模策略能够在有限的计算量下准确预测frp加固砌体面板的非线性和极限行为。

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

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.