Wood Diaphragm Deflections. II: Implementing a Unified Approach for Current CLT and WSP Practice

IF 1.5 Q3 CONSTRUCTION & BUILDING TECHNOLOGY

Journal of Architectural Engineering Pub Date : 2023-09-01 DOI:10.1061/jaeied.aeeng-1574

J. Lawson, Scott Breneman, M. Lo Ricco

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Abstract

AE1574 Wood Diaphragm Deflections. Part II: Implementing a Unified Approach for Current CLT and WSP Practice By John Lawson S.E., M.ASCE1, Scott Breneman Ph.D., M.ASCE2 and Marco Lo Ricco Ph.D., M.ASCE3 Abstract Horizontal wood diaphragm systems, whether decked with conventional or mass timber panels, transfer wind and seismic loads to vertical elements of the lateral force-resisting system (LFRS), in flexible, rigid, or semi-rigid fashion. Characterizing and calculating the resulting diaphragm deflections determines the distribution of forces to critically loaded components and a significant portion of lateral building translations and rotations. Deflection equations for sheathed wood structural panel (WSP) diaphragms are well established in U.S. design standards in a 4-term expression that models flexural, shear, and fastener-slip deformations, but similar equations for cross-laminated timber (CLT) diaphragms have yet to unfold, despite growing industry consensus that CLT panels make efficient slabs and decks. Building code standards require CLT diaphragm deflections be computed using principles of engineering mechanics. The

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木隔膜偏转。二:实施当前CLT和WSP实践的统一方法

AE1574木质隔膜挠曲。第二部分：实施当前CLT和WSP实践的统一方法作者：John Lawson S.E.，M.ASCE1，Scott Breneman Ph.D.，M.ASCE2和Marco Lo Ricco Ph.D，或半刚性方式。表征和计算由此产生的隔板挠度，决定了临界荷载构件的力分布以及建筑物横向平移和旋转的重要部分。在美国设计标准中，套层木结构板（WSP）隔板的挠度方程以4项表达式的形式得到了很好的确立，该表达式对弯曲、剪切和紧固件滑动变形进行了建模，但交叉层压木（CLT）隔板的类似方程尚未展开，尽管业界越来越一致认为CLT板可以制造高效的板和甲板。建筑规范标准要求使用工程力学原理计算CLT隔板挠度。这个

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来源期刊

Journal of Architectural Engineering CONSTRUCTION & BUILDING TECHNOLOGY-

CiteScore

3.50

自引率

5.00%

发文量

期刊介绍： The Journal of Architectural Engineering is a multidisciplinary forum for dissemination of research- based engineering and technical information related to all aspects of building engineering design in the form of peer-reviewed technical papers, technical notes, and case studies. The scope of the journal’s topics include; acoustics, construction, construction management, controls, electrical engineering and systems, indoor environmental quality, lighting and daylighting, mechanical engineering and systems, rehabilitation of existing structures, structural assessment, structural engineering, and sustainable construction/design, in the context of building systems engineering. Innovative and multi-disciplinary studies promoting an integrated approach to planning, design, construction and operation of buildings are especially encouraged. The journal also welcomes papers on the topic of architectural engineering education.

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