Quasi-static experiment and numerical simulation of a corner-fitting-reinforced fully bolted joint for thin-walled modular steel structure

IF 5.7 1区工程技术 Q1 ENGINEERING, CIVIL

Thin-Walled Structures Pub Date : 2025-03-20 DOI:10.1016/j.tws.2025.113215

Xiaodun Wang , Guannan Lu , Yang Liu , Zhihua Chen , Xingwang Liu , Junda Wang

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引用次数: 0

Abstract

Modular steel building (MSB) construction represents a novel approach wherein factory-fabricated three-dimensional modules are assembled on-site. This method introduces unique structural characteristics, as module joints comprise both inter-module and intra-module connections. Current research predominantly emphasizes the influence of inter-module connections on the seismic performance of modular steel structures, often overlooking the impact of intra-module connections. Therefore, this study proposes an inter-module corner-fitting- reinforced fully bolted joint, and quasi-static loading tests were conducted to examine the effects of intra-module connection on the seismic performance of such the joint. Then the critical seismic parameters of the reinforced corner-fitting fully bolted joint were obtained, including load-bearing capacity, stiffness degradation, energy dissipation, and stress-strain behavior. A refined finite element modeling (FEM) was subsequently established and validated against experimental results. Furthermore, a simplified model was developed to capture the semi-rigid characteristics of intra-module connections, yielding results consistent with experimental data, with a load-bearing capacity error of less than 15 %. Finally, a bearing capacity calculation formula for the corner-fitting-reinforced fully bolted joint accounting for the semi-rigidity of intra-modular connections was proposed and validated against experimental and FEM numerical results, with an error within 5 %. Relevant design recommendations were also provided.

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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.