Developmentof Seismic Design Guidelines for Innovative Steel Shear Wall Buildings

加拿大东部和西部城市的地震风险是众所周知的。因此，在加拿大，设计具有足够抗震能力的结构和修复有缺陷的结构是极其重要的。钢板剪力墙是一种非常有效的抵抗风和地震作用的横向荷载体系，但由于其高强度和在地震中所产生的大作用力，该体系对工程技术人员的吸引力仍然较小。采用轻钢剪力墙，而不是采用较厚的热轧填充板的传统剪力墙，是一种可行和更经济的替代方案。研究表明，将非常薄的填充板焊接到相对较厚的边界单元上是非常具有挑战性的，这降低了该系统的吸引力。将薄板连接到边界梁和柱上的另一种方法是使用自钻螺钉。虽然这是一种将轻量级填充板连接到框架的简单解决方案，但在过去还没有人研究过它。最近推出的另一种创新的钢剪力墙是复合板剪力墙，它的目的是改善面板对火灾和爆炸等极端事件的承受能力。在组合板剪力墙中，在钢板的一侧或两侧设置混凝土板，以防止薄钢板的初始屈曲。加拿大建筑设计规范中没有针对轻钢剪力墙和组合板剪力墙的抗震设计规定。这使得实习工程师很难为地震区的建筑选择这样的系统。这项研究计划的目标是为创新的钢剪力墙制定加拿大特定的设计指南。拟议的研究还将有助于制定下一代基于性能的轻钢剪力墙抗震设计指南。拟议中的研究有很大的创新潜力，这将促进钢剪力墙在加拿大地震区的使用。建议的研究结果将吸引执业工程师和基础设施业主选择创新的钢剪力墙来设计抗震结构。

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.