STUDY ON FLEXURAL AND DEMOUNTABLE BEHAVIOR OF A MODULAR LIGHT-GAUGE STEEL FRAMED WALL

IF 4.3 3区工程技术 Q1 ENGINEERING, CIVIL

Journal of Civil Engineering and Management Pub Date : 2023-02-10 DOI:10.3846/jcem.2023.18351

Cong Liu, Xin Chen, X. Mao, Lin He, Jian Yuan

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引用次数: 0

Abstract

The demountable and modular light-gauge steel framed (DMLSF) wallboard is presented and used as non-load bearing exterior walls in medium and high-rise steel construction or temporary structure. Firstly, the bending tests were conducted on five wall modules to explore the flexural behavior of the wall. The numerical model was also established and verified by experimental results, and the simplified calculation method of the flexural capacity of the wall was proposed based on 68 numerical models. In addition, the reliability test of the seam between modules was finished to ensure the airtightness of the wall. Furthermore, the demountable behavior of the wall was studied by secondary loading tests and life cycle assessment (LCA) methodology. Results suggested that the wallboard could be used repeatedly after disassembled under the serviceability limit state. Raw materials, especially the insulation material, accounted for a large proportion of the environmental impact of the wallboard. The wallboard’s carbon dioxide emission and energy consumption could be significantly reduced when the wallboard was reused. This study can promote the application of the demountable concept in wall components and provide some guidance for the life cycle design of demountable structures.

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模块化轻钢框架墙的抗弯和可拆卸性能研究

提出了可拆卸模块化轻钢框架(DMLSF)墙板，用于中高层钢结构或临时结构的非承重外墙。首先，对5个墙体模块进行了抗弯试验，探讨墙体的抗弯性能。建立了数值模型，并通过试验结果进行了验证，提出了基于68个数值模型的墙体抗弯承载力简化计算方法。此外，还完成了模块间缝的可靠性试验，以保证墙体的气密性。此外，通过二次加载试验和生命周期评估(LCA)方法研究了墙体的可拆卸性。结果表明，在使用极限状态下，拆装后的墙板可重复使用。原材料，特别是保温材料，在墙板的环境影响中占很大比例。当墙板被重复使用时，可以显著减少墙板的二氧化碳排放和能耗。该研究可以促进可拆卸概念在墙体构件中的应用，并为可拆卸结构的全生命周期设计提供一定的指导。

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来源期刊

Journal of Civil Engineering and Management ENGINEERING, CIVIL-

CiteScore

6.70

自引率

4.70%

发文量

审稿时长

1.7 months

期刊介绍： The Journal of Civil Engineering and Management is a peer-reviewed journal that provides an international forum for the dissemination of the latest original research, achievements and developments. We publish for researchers, designers, users and manufacturers in the different fields of civil engineering and management. The journal publishes original articles that present new information and reviews. Our objective is to provide essential information and new ideas to help improve civil engineering competency, efficiency and productivity in world markets. The Journal of Civil Engineering and Management publishes articles in the following fields: building materials and structures, structural mechanics and physics, geotechnical engineering, road and bridge engineering, urban engineering and economy, constructions technology, economy and management, information technologies in construction, fire protection, thermoinsulation and renovation of buildings, labour safety in construction.