钢框架-钢板墙和组合柱-钢梁框架振动台试验研究  

Shaking table tests of steel frame-steel plate shear wall and composite column-steel beam frame structures

作　　者：杨溥[1] 冯力强 何翰卿 李锋[1] 刘立平[1] 牛昌林 魏宏亮 YANG Pu;FENG Liqiang;HE Hanqin;LI Feng;LIU Liping;NIU Changlin;WEI Hongliang(School of Civil Engineering,Chongqing University,Chongqing 400045,China;Gansu Construction Investment(Holdings)Group Co.,Ltd.,Lanzhou 730050,China;Gansu Construction Investment Technology Research Co.,Ltd.,Lanzhou 730050,China)

机构地区：[1]重庆大学土木工程学院,重庆400045 [2]甘肃省建设投资(控股)集团有限公司,兰州730050 [3]甘肃建投科技研发有限公司,兰州730050

出　　处：《振动与冲击》2023年第4期10-18,共9页Journal of Vibration and Shock

基　　金：国家自然科学基金项目(51578093);重庆市自然科学基金项目(cstc2018jcyjAX0061);住房和城乡建设部研究开发项目(2018-K9-072)。

摘　　要：为深入研究钢框架-钢板剪力墙和钢管混凝土柱-钢梁框架两种典型装配式结构体系的整体抗震性能和拓展其在高烈度区的应用,以甘肃省装配式示范工程中的两栋高层(10层)住宅建筑方案为原型,进行了1/8缩尺模型的地震模拟振动台试验。结果表明,钢框架-钢板剪力墙结构中的钢板剪力墙首先达到屈服状态,随后框架上出现塑性铰,塑性损伤主要集中在钢板墙及相邻梁端,个别1层柱脚出现损伤,体现了“多道抗震防线”的理念,巨震后(1.200g)结构的自振频率降幅约为19.5%(X向)和17.4%(Y向);钢管混凝土柱-钢梁框架结构的损伤主要在1层、4层及5层梁端,1层柱脚也出现少量塑性铰,体现了“强节点弱构件”的设计原则,巨震后结构的自振频率降幅约为19.5%(X向)和17.8%(Y向)。两类结构体系均能实现“小震不坏、大震不倒”的抗震设防目标,具有良好的抗震性能。此外,结构体系的侧向变形模式与整体结构的刚度分布密切相关,并且随着地震动峰值的增大愈加明显,钢框架-钢板剪力墙的抗侧刚度沿着高度呈降低趋势,整体呈现弯曲型的特征,钢管混凝土柱-钢梁框架(1层除外)抗侧刚度沿着高度分布较均匀,整体呈现剪切型的特征。In order to further expand the application of steel frame steel plate shear wall and concrete filled steel tubular column steel beam frame structure in high intensity areas, two shaking table tests of a 1/8 scaled model were carried out based on two high-rise(10-storey) residential buildings in Gansu Province, China. Results show that the infill wall reached yield state firstly, and then plastic hinge appeared on the outer frame. The plastic damage mainly occurred at the steel plate shear wall, the end of the adjacent beam and column base of the first floor, which reflects the concept of ‘multi-defense levels of seismic engineering’. The natural frequency of the structure decreased by 19.5% and 17.4% in X and Y axis respectively after huge earthquake(1.200g). The damage of concrete-filled steel tubular column steel beam frame structure was mainly at the bottom, the fourth and the fifth floor beam ends, and a small amount of plastic hinge appeared at the bottom column base, reflects the design principle of ‘strong joint-weak member’. The natural frequency of the structure decreased by about 19.5% and 17.8% in X and Y axis respectively after huge earthquake. Both types of structural systems can achieve the seismic fortification goal of ‘no damage under frequent earthquake and no collapse under rare earthquake’, and have good seismic performance. In addition, the lateral deformation mode of the structural system is closely related to the stiffness distribution of the whole structure, and it becomes more obvious with the increase of the peak ground motion. The lateral stiffness of the steel frame-steel plate shear wall decreased along the height, and the whole structure exhibited lateral bending deformation mode. The lateral stiffness of the concrete filled steel tube column-steel beam frame(except the bottom) was uniformly distributed along the height, and the whole structure exhibited lateral shear deformation mode.

关 键 词：振动台试验 钢板剪力墙 钢管混凝土柱 抗震性能 

分 类 号：TU391[建筑科学—结构工程] TU352.1