An experimental-analytical investigation of the mechanical behaviour of moment-resisting timber connections using slotted-in steel plates with threaded rods

IF 3.9 3区工程技术 Q2 CONSTRUCTION & BUILDING TECHNOLOGY

Materials and Structures Pub Date : 2026-09-21 DOI:10.1617/s11527-026-03284-1

Elif Appavuravther, Robbe Celis, Dan Dragan, Tine Engelen, Jose Henriques, Bram Vandoren

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Abstract

The use of moment-connections with dowel-type connectors and slotted-in steel plates is becoming an increasingly used solution in mid- to high-rise timber structures. In this paper, the moment capacity and rotational stiffness of such moment connections have been studied through a limited experimental campaign with specimens climatised between 30% and 95% relative humidity (RH). The test specimens were monitored with digital image correlation (DIC) system to determine the changes on the surface displacement, centre of rotation (CoR) and crack propagation. The experimental results reveal a reduction in initial stiffness and ultimate moment capacity with increasing moisture content. The DIC results show the CoR is not at the geometric centre of the dowels, which is a common assumption in the analytical models available in the literature. Analytical predictions from EN 1995–1-1:2025 and literature were evaluated against the experimental data, showing that code-based approaches overestimate rotational stiffness by 35% and moment capacity by 80%. The findings demonstrate that the CoR has a substantial effect on moment connection performance and that existing analytical models require refinement for applications.

Graphical abstract

查看原文本刊更多论文

使用带螺纹杆的开槽钢板的抗弯矩木材连接的力学行为的实验分析研究

在中高层木结构中，使用榫连接和开槽钢板的弯矩连接已成为越来越多使用的解决方案。在本文中，这种弯矩连接的弯矩容量和转动刚度已经通过有限的实验活动进行了研究，试件的气候在30%和95%的相对湿度（RH）之间。采用数字图像相关（DIC）系统对试件进行监测，以确定试件表面位移、旋转中心（CoR）和裂纹扩展的变化。试验结果表明，初始刚度和极限弯矩承载力随含水率的增加而减小。DIC结果表明，芯部不在销钉的几何中心，这是文献中可用的分析模型中常见的假设。根据实验数据，对en1995 - 1-1:2025和文献的分析预测进行了评估，表明基于代码的方法高估了35%的旋转刚度和80%的弯矩容量。研究结果表明，CoR对弯矩连接性能有实质性影响，现有的分析模型需要改进才能应用。图形抽象

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

Materials and Structures 工程技术-材料科学：综合

CiteScore

6.40

自引率

7.90%

发文量

222

审稿时长

5.9 months

期刊介绍： Materials and Structures, the flagship publication of the International Union of Laboratories and Experts in Construction Materials, Systems and Structures (RILEM), provides a unique international and interdisciplinary forum for new research findings on the performance of construction materials. A leader in cutting-edge research, the journal is dedicated to the publication of high quality papers examining the fundamental properties of building materials, their characterization and processing techniques, modeling, standardization of test methods, and the application of research results in building and civil engineering. Materials and Structures also publishes comprehensive reports prepared by the RILEM’s technical committees.