扭转不规则状态下高层建筑剪力墙抗震性能研究  

Research on the Seismic Performance of Irregularly Torsional Shear Walls of High-Rise Buildings

作　　者：郭大鹏 GUO Dapeng(China Railway 19th Bureau Group Third Engineering Co.,Ltd,Shenyang 110136,China)

机构地区：[1]中铁十九局集团第三工程有限公司,沈阳110136

出　　处：《江苏工程职业技术学院学报》2024年第4期1-6,共6页Journal of Jiangsu College of Engineering and Technology

摘　　要：以沈阳市沈北新区某实际工程项目为例,针对扭转不规则高层住宅建筑进行结构设计,通过建立弹塑性模型对结构开展强震动力弹塑性时程分析,研究结构的抗震性能,得出扭转不规则高层剪力墙的合理结构设计,其中结构的弹性层间位移角在规范限值内,周期比小于0.9,位移比在较小范围内,满足规范要求。在3条强震地震波作用下,所设计结构的楼层剪力响应在0~5层的较低楼层和9~15层的较高楼层出现显著差异,最大弹塑性层间位移角均未超过规范限值。性能水平分析结果表明,虽然耗能构件连梁受到较严重破坏,但关键构件剪力墙大部分完好,仅少量轻微受损。综合分析结构的整体响应与构件性能水平可知,该扭转不规则高层剪力墙结构在强震作用下具有良好的抗震性能和较高的安全性。Taking the actual engineering project in the Shenbei New of Shenyang as an example,this paper conducted the structural design of high-rise residential buildings with irregular torsion.By establishing a pushover model,the seismic performance of such a structure under strong earthquakes was investigated through pushover and time-history analysis.A reasonable design of irregular torsional shear walls in high-rise buildings was finally obtained,in which the value of story drift was within the limit,the period ratio was less than 0.9,and the story drift ratio was in a small range,satisfying the regular standards.The maximum story drift of both the lower floors(from the 0~5th floor)and the higher floors(from the 9th~15th floor)did not exceed the limit value under the action of three strong seismic waves,though the response of the designed shear walls in the lower floors was significantly different from that in the higher floors.The results of the performance analysis showed that the shear walls,as the major member,were largely intact with only a few minor damages,despite more serious damages to the coupling wall-beams.From the comprehensive analysis of the overall responses and the member performance,it can be concluded that the designed structure has good seismic performance,which is safer under strong earthquakes.

关 键 词：扭转不规则 剪力墙结构 结构设计 抗震性能 

分 类 号：TU352.1[建筑科学—结构工程]