In-plane behavior of discretely connected diaphragms in steel modular buildings

IF 5.7 1区工程技术 Q1 ENGINEERING, CIVIL

Thin-Walled Structures Pub Date : 2025-04-10 DOI:10.1016/j.tws.2025.113302

Feng-Wei Shi , Yang Ding , Liang Zong , Wei Pan , Shuo Dong

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引用次数: 0

Abstract

Steel modular buildings, predominantly connected through corner-tied connections, experience significant discontinuities within their module diaphragms. This study introduces a novel beam-tied connection for adjacent modules aimed at improving the integrity of discontinuous diaphragms and investigates the in-plane behavior of discretely connected diaphragms in steel modular buildings. Experimental tests were conducted to assess the failure modes, load-bearing capacity, hysteretic behavior, and deformation characteristics of these discontinuous diaphragms. A simplified model for discretely connected diaphragms was developed and validated against experimental results, highlighting its effectiveness in predicting diaphragm behavior. Substructure models of assembled modules with discretely connected diaphragms were developed to investigate the effects of connection spacing and stiffness on in-plane behavior. Results indicated that beam-tied connections effectively mitigate relative shear deformation between adjacent modules, thereby improving their in-plane load-transfer capacity. Increasing both the number and shear stiffness of beam-tied connections significantly enhances in-plane stiffness and reduces inter-module displacement, with the number of connections having a more pronounced effect. Finally, several design recommendations for beam-tied connections were provided to facilitate practical engineering applications.

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钢构件建筑中离散连接隔板的平面内性能

钢模块建筑主要通过角系连接连接，在其模块隔板内经历显著的不连续性。本研究引入了一种新的相邻模块的梁系连接，旨在提高不连续隔板的完整性，并研究了钢模块建筑中离散连接隔板的平面内行为。进行了试验测试，以评估这些不连续隔膜的破坏模式、承载能力、滞后行为和变形特征。建立了离散连接隔膜的简化模型，并与实验结果进行了验证，突出了其在预测隔膜行为方面的有效性。建立了具有离散连接隔膜的组合模组子结构模型，研究了连接间距和刚度对模组平面内性能的影响。结果表明，梁系连接能有效缓解相邻模块间的相对剪切变形，从而提高其面内荷载传递能力。增加梁系连接的数量和抗剪刚度可以显著提高面内刚度，减少模间位移，其中连接的数量效果更为明显。最后，提出了一些梁系连接的设计建议，以方便实际工程应用。

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.