Performance of mid-ply wood shear walls with openings

带开口的中层木剪力墙的性能

• 批准号: 552124-2020
• 负责人: Chui, YingHei
• 金额: $ 1.46万
• 依托单位: University of Alberta
• 依托单位国家: 加拿大
• 项目类别: Alliance Grants
• 财政年份: 2020
• 资助国家: 加拿大
• 起止时间: 2020-01-01 至 2021-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=703530
• 关键词: Performance; mid; ply; wood; shear

Driven by the growing demand on strong lateral load resisting systems in regions susceptible to severe earthquakes or strong winds, the mid-ply shear wall was first developed in the 1990s in Canada. Testing has shown that mid-ply walls possess approximately two to three times the lateral capacity of conventional wood shear walls. Design provision for mid-ply shear wall systems was implemented first time in Canadian timber design standard CSA O86 in 2014. As home owners increasingly favour an open space concept and large glass façades with few structural shear walls and large openings, the strong mid-ply shear wall has further attracted the attention of designers in recent years. This is a global trend that is happening in North America as well as overseas countries that import Canadian wood products for construction. The increase of allowable building height for wood construction from low-rise (upto 4 storesy) to mid-rise (6-storey) in recent years has led to increased interest in this strong wood shear wall to address the higher design loads, especially in the lower storey of mid-rise buildings. In this context, a key question has been raised recently regarding the effects of openings, which are often required for windows and doors, on stiffness and strength properties of mid-ply walls. This project is intended to address this issue. The specific objectives are to develop framing details around an opening in mid-ply walls to minimize the impact of the opening on the strength and stiffness of the assembly and to evaluate the influence of relative size and location of an opening on the strength and stiffness of a mid-ply wall. This research will lead to design guidelines to address mid-ply walls with openings as well as construction detailing around openings that would allow segments of mid-ply walls with openings to retain an acceptable level of stiffness and strength. The success of the proposed research will help to increase the use of Canadian lumber and wood-based panels domestically as well as in overseas markets.

在1990年代在加拿大开发的严重地震或强风的地区对强载载荷系统​​的需求不断增长的驱动。 GN标准CSA O86在2014年。由于房主越来越喜欢开放的空间概念和大型玻璃幕墙，剪切墙和大开口很少，近年来，强大的中层墙在北美地区进一步关注。加拿大木材产品建设的韦尔西亚斯国家（Wellseas）近年来，从低层（最高4个商店）到中层（6层）的允许建筑高度提高了木材剪力墙在此问题中，尤其是在中层建筑中的载荷目标是围绕中层墙壁开口的详细信息，以使其对组件的僵硬EST的影响以及评估相对大小和开口的相对大小和位置在中间级的强度和刚度上将导致设计为了加上开口和建筑帽子，添加额外的款项将允许中间段和开口的toretaings to toreta，以驱逐僵化的力量。面板在国内以及海外市场。