组合钢板剪力墙的抗震性能研究进展

Progress in Seismic Performance of Composite Steel Plate Shear Walls

组合钢板剪力墙是由钢板和混凝土板组成的新型抗侧力构件。本文介绍了组合墙的各种形式。总体上将组合墙分为单层钢板组合墙和双层钢板组合墙。前者可分为现浇混凝土组合墙和预制板组合墙,后者有Bi-Steel(双钢板)组合墙和双层压型钢板组合墙两种形式。本文对每种形式组合墙的抗震性能作了仔细讨论,重点回顾了预制板组合墙的改进措施,包括混凝土板边设缝、预制板设大孔径螺栓孔、采用低屈服点钢材、钢板开圆孔以及去除钢板与竖向边缘构件的连接,形成两边连接组合墙。还讨论了两边连接组合墙的改进方法,包括设置面外支撑、钢板开竖缝、大宽厚比开缝钢板和大高宽比Ⅰ型钢板。最后总结了组合墙的发展趋势。

Various forms of composite steel plate shear wall （CSPW）, which is in general a new type lateral bracing member composed of steel plate and concrete panel, were reviewed. CSPW was categorized into two entries： CPSW with single steel plate and CPSW with double steel plates. Each one was further classified as two sub-entries： cast-in-place CPSW and precast CPSW for the former as well as Bi Steel CSPW and profiled double skin CSPW for the latter. Seismic performance of each form was discussed in detail. Emphasis was put on effects of essential measures to improve the performance of precast CSPW, including gap between reinforced concrete （RC） panel and boundary members, large sized bolt hole in RC panel, use of low yield point steel and large round holes in steel plate as well as omission of the connection between steel plate and vertical boundary members, by which two-sided CPSW was named. Further innovated improvements for the two-sided CSPW were also covered, i.e. out-of-plane bracing for the precast RC panels, vertical slits in steel plate, and large height-to-width ratio of CSPW with I shaped steel plate as well. Trend in the development of CSPW was summarized.