开孔型耗能连梁摇摆钢支撑抗震性能研究  

Study on the Seismic Performance of Hole-type Energy Dissipatior Link Beam in Rocking Steel Braced Frame

作　　者：殷志文 冯磊[2] 李烨坤 YIN Zhiwen;FENG Lei;LI Yekun(Suzhou Tianshi Construction Supervision Co.,Ltd,Suzhou Jiangsu 215011 China;School of Civil Engineering,Suzhou University of Science and Technology,Suzhou Jiangsu 215011 China)

机构地区：[1]苏州天狮建设监理有限公司,江苏苏州215011 [2]苏州科技大学土木工程学院,江苏苏州215011

出　　处：《江苏建筑》2024年第5期40-46,共7页Jiangsu Construction

摘　　要：在设防地震作用下,摇摆钢支撑框架结构仅耗能连梁发生破坏,有效避免主体结构发生破坏,震后仅更换耗能连梁便可恢复结构的使用功能。文章采用ABAQUS软件建立有限元模型,分析了不同设计参数摇摆钢支撑框架结构的滞回性能。分析结果表明:摇摆钢支撑结构的滞回曲线饱满,耗能能力较好;随着耗能连梁长度的增加,结构在相同侧移比下的承载力和刚度下降,耗能能力呈现出先下降再略有上升的趋势,耗能连梁长度取值范围在0.9 Mp/Vp~1.41 Mp/Vp之间较为合理;随着跨度的增加,结构的承载力、刚度、耗能能力和抗侧刚度显著增加;随着耗能连梁长度的增加,承载力和耗能能力增大,初始抗侧刚度略有下降;随着孔间板件长宽比的增加,承载力、抗侧刚度和耗能能力减小。Under the action of earthquake resistance,the rocking steel braced frame structure only experiences energy dissipation link beam damage,which can avoid damage to the main structure.By only changing the energy dissipation link beam after an earthquake,the function of the structure can be restored.ABAQUS finite element is adopted to establish a finite element model.The hysteretic properties of different rocking steel braced frame structures are analyzed in this paper.The analysis results show that the hysteresis curve of the rocking steel braced frame structure is full,and the energy dissipation ability is good.Along with the increase in the length of the energy dissipation link beam,the bearing capacity and stiffness of the structure decrease under the same proportion of the lateral shift.The energy dissipation capacity shows a trend of first decreasing and then slightly increasing.The length range of the energy dissipation link beam between 0.9 Mp/Vp~1.41 Mp/Vp is more reasonable.With the increase in span,the structure's bearing capacity,stiffness,energy dissipation capacity and lateral stiffness significantly increase.As the length of the energy dissipation link beam increase,the bearing capacity and energy dissipation capacity increase,the initial lateral stiffness drops a bit.With the increase of the ratio in length to width of the inter-hole plate,the bearing capacity,lateral stiffness and energy dissipation capacity are reduced.

关 键 词：摇摆钢支撑 滞回性能 耗能连梁 试验研究 有限元分析 

分 类 号：TU352.11[建筑科学—结构工程]