新型带预折痕钢板剪力墙滞回性能分析  

HYSTERETIC ANALYSIS OF A NOVEL PRE-FOLDED STEEL PLATE SHEAR WALL

作　　者：陆金钰[1,2] 谯旭东 陈水荣[3] 舒赣平[1,2] 邱林波[3] 廖杰[2] 

机构地区：[1]东南大学混凝土与预应力混凝土教育部重点实验室,南京210096 [2]东南大学土木工程学院,南京210096 [3]中冶建筑研究总院有限公司,北京100088

出　　处：《钢结构》2016年第2期38-42,共5页Steel Construction

基　　金："十二五"国家科技支撑计划项目(2012BAJ13B01)

摘　　要：平板式薄钢板剪力墙在侧向荷载作用下容易发生平面外屈曲,延性较差。借鉴折纸原理,提出一种新型带预折痕的钢板剪力墙,钢板由若干带折痕的子单元组成。针对子单元的几何尺寸及放置角度等参数,详细分析其对钢板剪力墙延性及滞回性能的影响。结果表明:相对于平板式钢板剪力墙,带预折痕钢板剪力墙具有较好的延性。在低周往复荷载作用下,子单元0°放置试件的滞回曲线尤为饱满。带预折痕钢板剪力墙的塑性带均沿其子单元折痕处开展,可吸收大量能量,充分发挥出钢材进入塑性耗能的特点。The out-of-plane buckling always occurres in flat steel thin-plate shear wall under lateral loads because of poor ductility. Based on the origami theory,this paper presented a kind of novel pre-folded steel plate shear wall that consisted of concave and convex subunits. The influences of subunits＇ size and position angle on the hysteretic performance of pre-folded steel plate shear wall were studied. The results indicated that the pre-folded steel plate shear wall exhibited its good ductility and hysteretic performance compared with flat steel plate shear wall. Under low cyclic loading,the specimens whose subunits with zero-angle owned full hysteretic loop. Plastic hinges spread along the specimens＇ preset creases,which could absorb more energy in earthquake and makes full use of plastic energy dissipation.

关 键 词：带预折痕 钢板剪力墙 子单元 延性 滞回性能 耗能 

分 类 号：TU398.2[建筑科学—结构工程]