Experimental investigation and finite element analysis of steel frame infill CLT panel hybrid structure

IF 8.3 1区工程技术 Q1 ENGINEERING, CIVIL

Thin-Walled Structures Pub Date : 2026-04-13 DOI:10.1016/j.tws.2026.114976

Yinlan Shen , Ziyang Nie , Shijie Xiang , Guofang Wu

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Abstract

This study presents an experimental and numerical investigation into the hysteretic behavior and lateral load-resisting performance of a steel-frame-infilled cross-laminated timber (CLT) shear wall system with bracket-type connections. Quasi-static cyclic tests were conducted on half-scale specimens: a pure steel frame (PF) and a steel–CLT hybrid wall (FSW). The validation of the numerical model of the hybrid steel-CLT wall was conducted through experimental data in OpenSEES. Furthermore, a series of parametric analyses were performed to examine the effects of connection strength and connection spacing on lateral resistance and internal force distribution of the hybrid wall. Results demonstrate that the CLT infill significantly enhances lateral load-resisting performance: the hybrid system (FSW) achieves a 41.4% increase in peak lateral load, a 30.9% improvement in initial elastic stiffness, and a 62.4% gain in cumulative energy dissipation relative to the bare steel frame (PF). Critical failure modes observed in the steel–CLT hybrid wall include screw shear fracture at bracket connections, rotational deformation of the CLT panel, and localized flange buckling in steel columns. The validated numerical model well captured the mechanical behavior of the hybrid structure. To ensure structural efficiency of the hybrid shear wall system, it is beneficial to use strong bracket connections to make sure the shear force can be transferred and shared effectively between the CLT wall and the steel frame.

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钢框架填充CLT板混合结构试验研究及有限元分析

本文对具有支架连接的钢框架-交叉层合木（CLT）剪力墙体系的滞回性能和抗侧载性能进行了试验和数值研究。采用半比例尺试件：纯钢框架（PF）和钢- clt混合墙（FSW）进行准静力循环试验。通过OpenSEES的实验数据对钢- clt混合墙的数值模型进行验证。此外，通过一系列参数分析，考察了连接强度和连接间距对混合墙侧阻力和内力分布的影响。结果表明，CLT填充显著提高了横向抗荷载性能：相对于裸钢框架（PF），混合动力体系（FSW）的峰值横向荷载提高了41.4%，初始弹性刚度提高了30.9%，累积能量耗散提高了62.4%。在钢- CLT混合墙中观察到的临界破坏模式包括支架连接处的螺旋剪切断裂、CLT板的旋转变形和钢柱的局部法兰屈曲。验证的数值模型较好地反映了混合结构的力学行为。为保证混合剪力墙体系的结构效率，采用较强的支架连接，保证剪力在CLT墙体和钢框架之间有效传递和分担。

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.