Development and characterization of efficient connections for multi-storey timber buildings

多层木结构建筑高效连接的开发和表征

• 批准号: RGPIN-2017-05890
• 负责人: Salenikovich, Alexander
• 金额: $ 1.53万
• 依托单位: Université Laval
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 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=664149
• 关键词: Development; characterization; efficient; connections; multi

During the last few years, multi-storey timber construction has been promoted by the wood industry and by the governments in Canada and in other countries with abundant forest resources. This trend has been justified for the ecological reasons (reduced environmental footprint, sustainability), architectural attractiveness (aesthetics, health, comfort) and development of new engineered wood products, such as mass timber panels, suitable for construction of mid-rise and tall buildings. Because of their light weight, timber structures may take advantage when used to resist seismic forces. However, to turn the multi-storey timber construction into the main stream, efficient and cost effective structural systems should be developed and specific guidance included into the design codes. ******The structural performance of timber systems primarily depends on the performance characteristics of the connections resisting lateral loads (wind and seismic), which are not well studied and are not sufficiently covered in the design codes. The efficient structural connections in multi-storey buildings should provide enough stiffness to resist high winds and enough resiliency to resist severe earthquakes with the minimum damage of the structure. However, there is not a unified approach to the evaluation of the connection properties, and the design resistance values are not based on reliability principles. The design guidance for the connections of new engineered wood products, such as cross-laminated timber (CLT), is rudimentary and is not satisfying the needs of the designers. These drawbacks reduce the efficiency of the design solutions, slow down the design process and discourage the use of wood in multi-storey buildings.******The main goal of the proposed research program is to develop efficient connections and methods of their characterization meeting the needs of multi-storey timber construction. Particular attention will be given to the connections for the lateral load resisting systems in mass timber buildings advancing the reliability principles and the low damage seismic design philosophy. The performance characteristics of the connections will be evaluated experimentally to model their hysteretic behaviour, which then will be integrated into the design models of the whole structures and validated via laboratory tests. ******This research program will contribute to the development of the design principles of timber structures for multi-storey buildings enabling the designers to choose the most effective and reliable solutions at a lower cost. Implementation of these results in the design codes will increase the competitiveness and the use of timber in the mid-rise and tall building construction in Canada. In turn, this will benefit the Canadian wood industry and, therefore, the Canadian economy and society by contributing to the development of the sustainable future.

在过去的几年中，木材工业以及加拿大和其他拥有丰富森林资源的国家的政府促进了多层木材的建设。由于生态原因（降低了环境足迹，可持续性），建筑吸引力（美学，健康，舒适）和新工程木制产品，例如大型木材面板，适合于中层建筑和高层建筑。由于它们的重量轻，木结构可能会在抵抗地震力时利用。但是，要将多层木材的建设转变为主流，应开发高效且具有成本效益的结构系统，并将特定的指导包括在设计代码中。 ******木材系统的结构性能主要取决于抵抗横向载荷（风和地震）连接的性能特征，这些连接均未得到很好的研究，并且在设计代码中没有充分覆盖。多层建筑中的有效结构连接应提供足够的刚度，以抵抗大风和足够的弹性，以抵抗严重的地震，并以结构的最小损害。 但是，没有统一的方法来评估连接属性，并且设计电阻值并不基于可靠性原则。新工程木制产品（例如跨层面木材（CLT））的连接设计指南是基本的，并且不满足设计师的需求。这些缺点降低了设计解决方案的效率，减慢了设计过程，并劝阻木材在多层建筑中的使用。****** ******拟议的研究计划的主要目标是开发其表征的有效连接和方法满足多层木材构造的需求。特别关注大量木材建筑物中横向负载系统的连接，这些建筑推进了可靠性原则和低伤害地震设计理念。连接的性能特征将进行实验评估，以模拟其滞后行为，然后将其集成到整个结构的设计模型中，并通过实验室测试进行验证。 *****该研究计划将为多层建筑的木材结构设计原理的发展做出贡献，使设计师能够以较低的成本选择最有效和最可靠的解决方案。在设计法规中实施这些结果将提高加拿大中层和高层建筑中木材的竞争力和使用。反过来，这将受益于加拿大木材工业，因此，通过为可持续未来的发展做出贡献，从而使加拿大的经济和社会受益。