Flexural behaviour of a new modular and demountable truss beam with embedded nodes

IF 6.2 2区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Developments in the Built Environment Pub Date : 2025-03-01 DOI:10.1016/j.dibe.2025.100636

Cong Liu , Zihao Wang , Xin Chen , Jian Yuan , Xiaoyong Mao , Guiming Chen , Yong Sun

{"title":"Flexural behaviour of a new modular and demountable truss beam with embedded nodes","authors":"Cong Liu , Zihao Wang , Xin Chen , Jian Yuan , Xiaoyong Mao , Guiming Chen , Yong Sun","doi":"10.1016/j.dibe.2025.100636","DOIUrl":null,"url":null,"abstract":"<div><div>Demountable structures, through specific connection designs, enable direct disassembly and subsequent reuse of the structure or its components. The current method of realizing structural demountability primarily relies on bolted connections, which diminish disassembly and convenience. This paper presents a novel modular and demountable truss beam, and a new embedded node has been developed to improve disassembly and assembly efficiency. Tensile and shear tests of the embedded node were conducted. A refined finite element model of the node was developed, and the mechanical performance of the embedded node which was subjected to tension and shear simultaneously, was explored. Bending tests of three modular and demountable truss beams were conducted to investigate the flexural behaviour. Failure modes, load-displacement curves, and load-strain curves were obtained. Results show that the ultimate failure of the truss is caused by the failure of a single member. The FEM of MDTB was developed and verified by tests.</div></div>","PeriodicalId":34137,"journal":{"name":"Developments in the Built Environment","volume":"21 ","pages":"Article 100636"},"PeriodicalIF":6.2000,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Developments in the Built Environment","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2666165925000365","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CONSTRUCTION & BUILDING TECHNOLOGY","Score":null,"Total":0}

引用次数: 0

Abstract

Demountable structures, through specific connection designs, enable direct disassembly and subsequent reuse of the structure or its components. The current method of realizing structural demountability primarily relies on bolted connections, which diminish disassembly and convenience. This paper presents a novel modular and demountable truss beam, and a new embedded node has been developed to improve disassembly and assembly efficiency. Tensile and shear tests of the embedded node were conducted. A refined finite element model of the node was developed, and the mechanical performance of the embedded node which was subjected to tension and shear simultaneously, was explored. Bending tests of three modular and demountable truss beams were conducted to investigate the flexural behaviour. Failure modes, load-displacement curves, and load-strain curves were obtained. Results show that the ultimate failure of the truss is caused by the failure of a single member. The FEM of MDTB was developed and verified by tests.

查看原文本刊更多论文

求助全文

约1分钟内获得全文求助全文

来源期刊

Developments in the Built Environment Multiple-

CiteScore

7.40

自引率

1.20%

发文量

审稿时长

22 days

期刊介绍： Developments in the Built Environment (DIBE) is a recently established peer-reviewed gold open access journal, ensuring that all accepted articles are permanently and freely accessible. Focused on civil engineering and the built environment, DIBE publishes original papers and short communications. Encompassing topics such as construction materials and building sustainability, the journal adopts a holistic approach with the aim of benefiting the community.