Design and Evaluation of a Shear Analogy Tool for Custom Cross-Laminated Timber (CLT) Panels Made from Various Wood Species

IF 1.1 4区 农林科学 Q3 FORESTRY
Sailesh Adhikari, Henry Quesada, Brian Bond
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Abstract

A user-friendly cross-laminated timber (CLT) design tool called SAM-CLT was developed to calculate the minimum design values for custom CLT panels. Custom panels are those made from different species not currently included in APA PRG 320 and include the use of multiple species in a panel. The tool uses the design value of hardwood and softwood lumber published in the national design specification book to design custom CLTs and the standard CLT grade lumber specification values published in PRG 320 standard. SAM-CLT was designed based on the shear analogy model and is intended to assist CLT manufacturers, construction and design companies, and researchers in designing and evaluating CLTs’ deformation when using different lumber types and thicknesses. This project included the calibration and validation of the tool, followed by examples of its use by computing the design value of the softwood, hardwood, and softwood–hardwood hybrid CLTs. The SAM-CLT tool was adjusted to match the published standard design values on PRG 320 and validated by comparing output for standard CLT layups. In the next step, SAM-CLT tool was used to calculate the minimum design value of custom CLTs made from hardwood–yellow poplar lumber and softwood–southern yellow pine lumber. Based on observed validation results of the tool and its application results to determine the design values for various CLT layups, this project concludes that SAM-CLT can be a valuable tool for designing custom CLTs, evaluating CLTs’ strength properties, and promoting heterogeneous lumber types in CLT manufacturing.
设计和评估用于定制不同木种交叉层压木材 (CLT) 板材的剪力类比工具
一个用户友好的交叉层压木材(CLT)设计工具被称为SAM-CLT,用于计算定制CLT面板的最小设计值。自定义面板是由目前未包括在APA PRG 320中的不同物种制成的面板,包括在面板中使用多个物种。该工具使用国家设计规范书中公布的硬木和软木木材的设计值来设计定制CLT和PRG 320标准中公布的标准CLT级木材规格值。SAM-CLT是基于剪切类比模型设计的,旨在帮助CLT制造商、施工和设计公司以及研究人员设计和评估CLT在使用不同木材类型和厚度时的变形。该项目包括工具的校准和验证,然后通过计算软木、硬木和软木-硬木混合clt的设计值来使用该工具。调整SAM-CLT工具以匹配PRG 320上公布的标准设计值,并通过比较标准CLT分层的输出来验证。接下来,使用SAM-CLT工具计算硬木-黄杨木材和软木-南黄松木材的定制clt的最小设计值。基于该工具的观察验证结果及其用于确定各种CLT分层的设计值的应用结果,本项目得出结论,SAM-CLT可以成为设计定制CLT,评估CLT强度性能以及促进CLT制造中异质木材类型的有价值的工具。
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来源期刊
Forest Products Journal
Forest Products Journal 工程技术-材料科学:纸与木材
CiteScore
2.10
自引率
11.10%
发文量
30
审稿时长
6-12 weeks
期刊介绍: Forest Products Journal (FPJ) is the source of information for industry leaders, researchers, teachers, students, and everyone interested in today''s forest products industry. The Forest Products Journal is well respected for publishing high-quality peer-reviewed technical research findings at the applied or practical level that reflect the current state of wood science and technology. Articles suitable as Technical Notes are brief notes (generally 1,200 words or less) that describe new or improved equipment or techniques; report on findings produced as by-products of major studies; or outline progress to date on long-term projects.
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