ABSTRACT

Mass timber represents a range of composite materials, including glued- or nail-laminated timber, cross-laminated timber, laminated veneer lumber, and mass plywood panels that are increasingly used to construct multi-story structures. The potential of these wood materials has energized the architectural and engineering communities as they seek less energy-intensive building materials. However, performance optimization of mass timber buildings will require careful consideration of the potential effects of moisture intrusion on performance. This paper reviews the roles of moisture in building performance, discusses the potential effects of moisture on mass timber, outlines steps to limit moisture intrusion and, if this cannot be prevented, discusses possible steps for wood protection. The paper concludes with a call for further collaborative research to better understand the role of moisture in mass timber structural performance.

摘要

大块木材代表了一系列复合材料，包括胶合或钉合层压的木材，交叉层压的木材，层压单板木材以及大量用于构造多层结构的胶合板。这些木质材料的潜力激发了建筑和工程界的热情，因为他们寻求的是能耗较低的建筑材料。但是，优化大型木材建筑的性能将需要仔细考虑潮气入侵对性能的潜在影响。本文回顾了湿气在建筑性能中的作用，讨论了湿气对大量木材的潜在影响，概述了限制湿气侵入的步骤，如果不能避免，则讨论了木材保护的可能步骤。