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[1]何 利,种 迅,沙慧玲,等.采用不同连接方式的外挂UHPC幕墙钢筋混凝土框架结构抗震性能研究[J].地震研究,2024,47(01):94-104.[doi:10.20015/j.cnki.ISSN1000-0666.2024.0031 ]
　HE Li,CHONG Xun,SHA Huiling,et al.Study on Seismic Performance of Reinforced Concrete Frame Structure with UHPC Cladding Panels Using Different Connection Systems[J].Journal of Seismological Research,2024,47(01):94-104.[doi:10.20015/j.cnki.ISSN1000-0666.2024.0031 ]
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采用不同连接方式的外挂UHPC幕墙钢筋混凝土框架结构抗震性能研究(PDF/HTML)

《地震研究》[ISSN:1000-0666/CN:53-1062/P]

卷:
47
期数:
2024年01期
页码:
94-104
栏目:
出版日期:
2023-11-20

文章信息/Info

Title:
Study on Seismic Performance of Reinforced Concrete Frame Structure with UHPC Cladding Panels Using Different Connection Systems
作者:
何 利1; 种 迅2; 沙慧玲2; 高 俊2; 冯 晖1; 赵 鹏1; 李志鹏1
(1.合肥工大建设监理有限责任公司,安徽 合肥 230051; 2.合肥工业大学 土木与水利工程学院,安徽 合肥 230009)
Author(s):
HE Li1; CHONG Xun2; SHA Huiling2; GAO Jun2; FENG Hui1; ZHAO Peng1; LI Zhipeng1
(1.Hefei University of Technology Construction Supervision Co.,Ltd.,Hefei 230051,Anhui,China)(2.College of Civil Engineering,Hefei University of Technology,Hefei 230009,Anhui,China)
关键词:
UHPC幕墙;  柔性连接;  耗能连接;  刚性连接;  抗震性能
Keywords:
UHPC cladding panels;  flexible connection;  energy-dissipating connection;  rigid connection;  seismic performance
分类号:
TU973+.31
DOI:
10.20015/j.cnki.ISSN1000-0666.2024.0031
摘要:
为研究超高性能混凝土(Ultra-High Performance Concrete,简称UHPC)幕墙与主体结构间不同连接方式对结构抗震性能的影响,提出了适用于UHPC幕墙的新型柔性连接和耗能连接方式。设计了4种单层单跨钢筋混凝土框架结构,分别为UHPC幕墙采用柔性连接、耗能连接和刚性连接方式的框架结构及不含幕墙的纯框架结构。利用有限元软件ABAQUS对4种结构进行了静力推覆分析和弹塑性时程分析,对比研究其在水平地震作用下的损伤机制以及动力荷载作用下的抗震性能。结果表明:4种模型中主体结构的最终损伤模式一致,均在梁端和柱脚出现塑性铰; 幕墙与主体结构采用刚性连接时,连接节点处螺栓发生破坏,连接附近的墙板及框架梁损伤严重; 采用柔性连接和耗能连接方式时,连接节点处的墙板和连接螺栓均保持完好。弹塑性时程分析结果表明:采用耗能连接方式时,水平地震作用下主体结构的损伤状态较轻,结构在3条地震波作用下的位移响应相比柔性连接模型减小了24.8%、32.9%和36.5%,减震效果显著。
Abstract:
To address the impact of different connection systems of the Ultra-High Performance Concrete(UHPC)cladding panels and the main structure on the seismic performance of the overall structure,two novel kinds of flexible and energy-dissipating connections between the UHPC cladding panels and the main structure were proposed in this study.Four single-story,single-span reinforced concrete(RC)frames were designed,including one RC frame with flexibly connected UHPC cladding panels,one RC frame with dissipative connected UHPC cladding panels,one RC frame with rigidly connected UHPC cladding panels,and a counterpart bare frame.Inelastic static analysis and nonlinear time-history analysis of the four structures were conducted using the finite element analysis software ABAQUS,and their mechanical properties and damage modes during earthquakes were compared and investigated.Results from the inelastic static analysis indicated that the ultimate damage modes were consistent for all four structures,and plastic hinges appeared at the ends of the beams and the bottom of the columns.In the rigid connection model,some of the connection bolts were damaged,and severe cracks appeared in the UHPC panels and the frame beam near the connections.In the flexible and energy-dissipating connection models,the connections and UHPC panels remained intact.The results from the nonlinear time-history analysis indicated that the displacement responses of the energy-dissipating connection model under the action of the three ground motions were reduced by 24.8%,32.9%,and 36.5%,respectively,compared to the flexible connection model,and the damage state of the energy-dissipating connection model hit by the strong earthquake was lighter,indicating a significant damage control effect.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2023-06-27
基金项目:国家自然科学基金项目(52178472); 安徽省住房城乡建设科学技术计划项目(2023-YF094).

更新日期/Last Update: 2023-12-20