摘要
一体化内嵌墙板用于钢框架结构可进一步提高装配率,为了提高一体化内嵌墙板的安装效率并减少其对主体结构抗震性能的影响,提出了一种“上挂下坐”式柔性连接方法。为了验证该柔性连接的可靠性并探明采用该方法连接的一体化内嵌墙板对钢框架结构抗震性能的影响,通过低周反复荷载试验和有限元分析研究了多种工况下单榀及空间钢框架结构的受力性能。结果表明:“上挂下坐”式柔性连接可靠,“上挂”区未见明显损伤;墙板与框架柱之间填充轻质泡沫材料,利于耗能且能降低框架结构损伤;采用“上挂下坐”式柔性连接的一体化内嵌墙板对钢框架结构抗震性能的影响分为三个阶段,其中小震下不参与主体结构抗侧,当层间位移角大于1/174时,其对刚度的贡献逐渐显现且存在随机波动性;大震下一体化内嵌墙板可等效为“只受压不受拉”的斜压杆单支撑模型,考虑内嵌墙板作用后基底剪力、塑性铰数量、层间位移角均显著增大或增多,其刚度的随机性对层间位移角和塑性铰存在影响、对基底剪力基本无影响。研究成果可为采用柔性连接的一体化内嵌墙板用于钢框架结构提供参考依据。
The integrated embedded wallboard can be used for steel frame structures to further improve the assembly rate.In order to improve the installation efficiency of the integrated embedded wallboard and reduce its impact on the seismic performance of the frame structures,a flexible connection method of “hanging up and bottom sit pulp” was proposed.In order to verify the reliability of the flexible connection and find out the effect of the integrated embedded wallboard connected by this method on the seismic performance of the steel frame structures,the mechanical performance of the single plane frame and space steel frame structures under various operating conditions was studied through low cycle loading tests and finite elements analysis.The results show that the flexible connection of “hanging up and bottom sit pulp” is reliable,and no obvious damage is seen in the “hanging up” area;The light foam plate is filled between the wallboard and the frame column,which is beneficial to energy consumption and can reduce the damage of frame structures;The influence of the integrated embedded wallboard with “hanging up and bottom sit pulp” flexible connection on the seismic performance of steel frame structures is divided into three stages,among which the small earthquake don't participate in the anti-side effect of the main structure,when the inter-storey drift ratio is greater than 1/174,its contribution to stiffness gradually appears and there are random fluctuations;The integrated embedded wallboard under a large earthquake can be equivalent to a diagonal strut model with single brace that is “only under pressure and not pulled”,considering that the base shear,plastic hinge quantity and inter-storey drift ratio significantly increase after the action of the embedded wallboard,the randomness of its stiffness has no effect on the inter-storey drift ratio and plastic hinge,and has no effect on the base shear.The research can provide a reference for the use of flexible connected integrated embedded wallboard for steel frame structures.
作者
陈强
徐宗美
王少杰
张旭
李庆刚
张中文
CHEN Qiang;XU Zongmei;WANG Shaojie;ZHANG Xu;LI Qinggang;ZHANG Zhongwen(College of Water Conservancy and Civil Engineering,Shandong Agricultural University,Tai’an 271018,China;Shandong Hi-Speed Dejian Group Co.,Ltd.,Dezhou 253000,China;College of Civil Engineering,Southeast University,Nanjing 210096,China)
出处
《振动与冲击》
EI
CSCD
北大核心
2023年第10期297-306,共10页
Journal of Vibration and Shock
基金
国家重点研发计划政府间国际科技创新合作重点专项(2017YFE0195300)
国家自然科学基金(52108275)。
关键词
一体化内嵌墙板
柔性连接
钢框架结构
抗震性能
斜压杆单支撑模型
integrated embedded wallboard
flexible connection
steel frame structure
seismic performance
diagonal strut model with single brace
