Developmentof Seismic Design Guidelines for Innovative Steel Shear Wall Buildings

创新型钢剪力墙建筑抗震设计指南的制定

• 批准号: 418423-2013
• 负责人: Bhowmick, Anjan
• 金额: $ 1.6万
• 依托单位: Concordia University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=636422
• 关键词: Developmentof; Seismic; Design; Guidelines; Innovative

Earthquake risks in the eastern and western Canadian cities are very well known. Thus the design of structures with adequate earthquake resistance and the rehabilitation of deficient structures are extremely important in Canada. Steel plate shear wall (SPSW) is a very effective system for resisting lateral loads due to wind and earthquakes, but the system remains less attractive to practicing engineers due to their high strength and the high forces they attract during earthquakes. Use of light-gauge steel shear walls rather than conventional shear walls with thicker hot-rolled infill plate, represents a viable and more economical alternative. Research has shown that welding of a very thin infill plate to relatively thick boundary elements is very challenging, which reduces the appeal of this system. An alternative to attach the thin sheet to boundary beams and columns is to use self-drilling screws. Although this is a simple solution for connecting a light gauge infill plate to a frame, it has not been investigated in the past. Another innovative steel shear wall, which has been introduced recently to improve the panel bearing against extreme events such as fire and explosion, is composite plate shear wall. In composite plate shear wall, concrete panel is provided either on one or both sides of the steel plate to prevent initial buckling of the thin steel plate. Seismic design provisions for light-gauge steel shear walls and composite plate shear walls are not available in Canadian building design codes. This makes it difficult for practicing engineers to select such system for buildings in seismic zones. The objective of this research program is to develop Canadian specific design guidelines for innovative steel shear walls. The proposed research will also contribute to the development of next-generation performance based seismic design guidelines for light-gauge steel shear walls. There is a significant potential for innovation in the proposed research, which will facilitate the use of steel shear walls in seismic zones in Canada. The results from the proposed research will attract practicing engineers, infrastructure owners to select the innovative steel shear walls for the design of earthquake resistant structures.

加拿大东部和西部城市的地震风险是众所周知的。因此，设计具有足够抗震能力的结构和修复有缺陷的结构在加拿大是极其重要的。钢板剪力墙（SPSW）是一种非常有效的系统，可以抵抗风和地震引起的侧向载荷，但由于其高强度和地震时所吸引的高力，该系统对实践工程师的吸引力较小。使用轻钢剪力墙，而不是传统的具有较厚热轧填充板的剪力墙，代表了一个可行的和更经济的选择。研究表明，将非常薄的填充板焊接到相对较厚的边界元是非常具有挑战性的，这降低了该系统的吸引力。另一种将薄板连接到边界梁和柱的方法是使用自钻螺钉。虽然这是一个简单的解决方案，连接一个轻型轨距填充板到一个框架，它没有被调查在过去。最近推出的另一种创新钢剪力墙是复合板剪力墙，它可以提高面板对极端事件（如火灾和爆炸）的承受能力。在组合板剪力墙中，为了防止薄钢板的初始屈曲，在钢板的一侧或两侧设置混凝土板。加拿大建筑设计规范中没有关于轻型钢剪力墙和组合板剪力墙的抗震设计规定。这使得实际的工程师很难选择这种系统用于地震带的建筑物。本研究计划的目的是为加拿大的创新钢剪力墙制定具体的设计准则。拟议的研究也将有助于开发下一代基于性能的轻型钢剪力墙抗震设计指南。在拟议的研究中有一个重大的创新潜力，这将促进加拿大地震带钢剪力墙的使用。研究结果将吸引实践工程师、基础设施业主选择创新的钢剪力墙进行抗震结构设计。