开门洞砌体填充墙RC框架结构抗震性能的有限元分析  

Finite Element Analysis on Seismic Capacity of Masonry-infilled RC Frame Structure with Door Openings

作　　者：赵伟通 孔璟常 张宇康 郑书笛 Zhao Weitong;Kong Jingchang;Zhang Yukang;Zheng Shudi(School of Civil Engineering Yantai University,264003,China)

机构地区：[1]烟台大学土木工程学院,264003

出　　处：《特种结构》2020年第2期73-80,共8页Special Structures

摘　　要：填充墙RC框架结构是我国及世界上广泛使用的结构形式之一,由于使用功能的需求,建筑中经常设置门窗洞口,洞口的存在对填充墙RC框架结构的抗震性能有着显著的影响。本文基于有限元分析平台分别对实体填充墙和开门洞填充墙进行了分离式建模,通过已有的试验结果验证了有限元模型的适用性。研究了不同门洞位置的填充墙对RC框架结构抗震性能的影响。结果表明,开门洞填充墙框架结构的侧向承载力和刚度明显低于实体填充墙框架结构。门洞远离加载侧框架柱时,易形成不理想的"短柱效应",洞口的压缩变形较大。门洞的位置对框架结构的整体刚度和承载力的影响较小,但是对结构延性影响较大,门洞位于填充墙的中心时,结构延性较偏心开门洞填充墙的情况更好。The masonry-infilled RC frame structure is one of the widely used structural forms in our country and the world.Due to the demand of the function,doors and windows are often set up in the building.The existence of the opening has a significant impact on the seismic performance of the masonry-infilled RC frame structure.In this paper,the separated modeling of masonry-infilled RC frame with/without opening was carried out based on the finite element analysis platform,and the reliability of the finite element model was verified by the existing test results.The influence of different position of door openings on seismic performance of RC frame structures was studied.The results showed that the lateral bearing capacity and stiffness of the frame structure filled with door opening are obviously lower than those of the frame structure filled with solid wall.When the door opening is not close to the loading side frame column,it is easy to form an unsatisfactory "short column effect",and the compression deformation of the entrance is large.The position of the door opening has little effect on the overall stiffness and bearing capacity of the frame structure,but significantly on the ductility of the stricture.When the door op ening is located at the center of the masonry-infilled wall,the ductility is much better than that with eccentric door opening.

关 键 词：填充墙RC框架结构 实体填充墙 开门洞填充墙 承载力 延性 

分 类 号：TU375.4[建筑科学—结构工程] TU352.11