交叉层压木材(CLT)和交叉层压竹木(CLBT)面板的热性能

IF 2.7 4区 工程技术 Q2 CONSTRUCTION & BUILDING TECHNOLOGY
B. Shan, Bozhang Chen, J. Wen, Yan Xiao
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引用次数: 3

摘要

交叉层压木材(CLT)由于其优异的机械性能和环保性能,在欧洲、北美和其他地区得到了越来越多的应用。考虑到中国等结构木材资源匮乏但竹林资源丰富的地区和国家,提出了将竹子引入CLT体系中形成一种新型复合材料的想法,称为竹木复合材料(CLBT)。本文重点比较了CLBT和CLT面板的隔热性能。通过防护热箱试验测量了CLT和CLBT墙试件的热阻和透射率。还使用ISO标准提供的计算方法和有限元模型来评估CLT和CLBT面板的热阻。基于所提出的有限元模型,对11块不同成分的CLBT板进行了参数分析,包括胶合木和木材的层数、挤塑聚苯乙烯的厚度以及石膏板和螺钉的使用。此外,分别根据中国和美国相应的建筑能效标准,评估了这些CLBT面板在中国和美国不同气候地区应用的可行性。最后可以得出结论,CLBT的开发和应用有助于实现结构的低碳可持续特征,这是由于其组成材料(即木材和竹子)具有良好的固碳能力,以及CLBT面板具有良好的隔热性能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Thermal performance of cross-laminated timber (CLT) and cross-laminated bamboo and timber (CLBT) panels
ABSTRACT Cross-laminated timber (CLT) is increasingly being utilized in Europe, North America and elsewhere due to its superior mechanical properties and environmental-friendly performance. Considering regions and countries, such as China, those are scarce in structural wood resource but rich in bamboo forest, an idea of introducing bamboo into CLT system has been proposed to form a novel composite material, named as cross-laminated bamboo and timber (CLBT). This paper focuses on the comparison of thermal insulation performance of CLBT and CLT panels. The thermal resistance and transmittance of CLT and CLBT wall specimens were measured by the Guarded Hot Box test. A calculation method provided by ISO standard and a finite element (FE) model were also used to evaluate the thermal resistance of CLT and CLBT panels. Based on the proposed FE model, some parametric analysis was performed through 11 CLBT panels with different compositions, including the layer number of glubam and timber, the thickness of extruded polystyrene and the use of gypsum board and screws. Moreover, the feasibilities of these CLBT panels were evaluated for the application in different climate regions of China and the United States in accordance with the corresponding Chinese and American building energy efficiency standards, respectively. It can be finally concluded that, the development and application of CLBT contributes to achieving the low carbon sustainable features of structures, which is due to the good carbon sequestration ability of its component materials (i.e., timber and bamboo) as well as the good insulation performance of CLBT panels.
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来源期刊
CiteScore
5.80
自引率
3.40%
发文量
30
期刊介绍: Informative and accessible, this publication analyses and discusses the integration of the main stages within the process of design and construction and multidisciplinary collaborative working between the different professionals involved. Ideal for practitioners and academics alike, Architectural Engineering and Design Management examines specific topics on architectural technology, engineering design, building performance and building design management to highlight the interfaces between them and bridge the gap between architectural abstraction and engineering practice. Coverage includes: -Integration of architectural and engineering design -Integration of building design and construction -Building design management; planning and co-ordination, information and knowledge management, vale engineering and value management -Collaborative working and collaborative visualisation in building design -Architectural technology -Sustainable architecture -Building thermal, aural, visual and structural performance -Education and architectural engineering This journal is a valuable resource for professionals and academics (teachers, researchers and students) involved in building design and construction, including the following disciplines: -Architecture -Building Engineering -Building Service Engineering -Building Physics -Design Management and Design Coordination -Facilities Management Published papers will report on both fundamental research dealing with theoretical work and applied research dealing with practical issues and industrial innovations. In this way, readers explore the interaction between technical considerations and management issues.
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