Vibration Performance of Cross-Laminated-Timber (CLT) Floors

交叉层压木 (CLT) 地板的振动性能

• 批准号: 532623-2018
• 负责人: Arjomandi, Kaveh
• 金额: $ 1.82万
• 依托单位: University of New Brunswick
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=644127
• 关键词: Vibration; Performance; Cross; Laminated; Timber

Timber is widely used to construct elevated floors in buildings. Traditionally, light-frame, lumber-joisted floors**were synonymous with timber construction in North America and elsewhere, however newer options suit**construction of all timber- and hybrid-buildings taller than 4 stories. Cross-Laminated-Timber (CLT) is the**generic name for a class of prefabricated, thick timber-plate products well suited to construction of slab floors.**The attractiveness of CLT products is that they have low mass to stiffness and strength ratios. This provides**transportation and construction site handling advantages, and can lead to substantial cost savings for**superstructure and foundation systems. On the other hand, using CLT is not simply a matter of substituting one**material for another of equal strength or stiffness. Like other relatively lightweight slabs, CLT slabs potentially**increase a floor's proneness to vibration serviceability performance problems. Available CLT design guidelines**are limited when it comes to addressing the construction complexities such as floor detail, floor panel**properties, story level, and architectural parameters. The efforts proposed in this application will investigate the**effects of these parameters on the vibration characteristics of a number of benchmark CLT floors using in-situ**tests.**In this project, a series of on-site vibration tests will be performed on a variety of floor designs. In these**tests, an array of accelerometer sensors will be used to perform operational modal analysis of the panels. The**analysis results will be used to extract the floor's vibration frequencies, mode shapes, and damping ratios. This**project will help the industrial partner to better understand how their current practice in the design and**construction of CLT floors is performing; to determine whether their design approach is considering all the**important parameters; and to understand how they can better optimize their floor design and construction**considering the vibration serviceability criteria.

木材被广泛用于建筑物中的高架地板。传统上，浅色，木材座的地板**是北美和其他地方的木材建设的代名词，但是更新的选择适合**所有木材和混合建筑的建筑，而不是4层。跨层压木板（CLT）是一类预制，厚的木板产品的通用名称，非常适合板板的建造。这提供了**运输和建筑工地处理优势，并可以为**上层建筑和基础系统节省大量成本。另一方面，使用CLT不仅是将一种**材料代替另一种相等强度或刚度的问题。像其他相对轻巧的平板一样，CLT平板可能会**增加地板对振动可服务性性能问题的倾向。可用的CLT设计指南**在解决构建复杂性（例如地板细节，地板面板**属性，故事级和建筑参数）方面受到限制。本应用程序中提出的努力将调查这些参数对使用原位测试的许多基准CLT地板的振动特性的**影响。在这些**测试中，将使用一系列加速度计传感器来对面板进行操作模态分析。 **分析结果将用于提取地板的振动频率，模式形状和阻尼比。这个**项目将帮助工业合作伙伴更好地了解他们目前在CLT地板的设计和**构建中的实践；确定他们的设计方法是否正在考虑所有**重要参数；并了解他们如何更好地优化其地板设计和构造**，考虑到振动可使用的标准。