菱形网格支撑框架结构的设计方法及抗震性能研究  

Research on Design Method and Seismic Performance of Diamond Braced Frame Structure

作　　者：樊春雷[1,2] 包献博 郝际平[2] 张海宾 钟炜辉[2] FAN Chunlei;BAO Xianbo;HAO Jiping;ZHANG Haibin;ZHONG Weihui(Institute of Architecture,Xi’an University of Architecture and Technology,Xi’an 710055,China;School of Civil Engineering,Xi’an University of Architecture and Technology,Xi’an 710055,China;Shandong Laigang Gaosu Green Construction Development Co.,Ltd.,Qingdao 266000,China)

机构地区：[1]西安建筑科技大学设计研究总院,西安710055 [2]西安建筑科技大学土木工程学院,西安710055 [3]山东莱钢高速绿建发展有限公司,山东青岛266000

出　　处：《工业建筑》2022年第7期86-92,65,共8页Industrial Construction

基　　金：国家重点研发计划(2017YFC0703806);西安市重大科技成果转化及产业项目(20GXSF0007);陕西省自然科学基金基础研究计划(2022JQ-381)。

摘　　要：菱形网格支撑框架结构是一种新型的抗侧力支撑结构,其构造简单,用于多高层钢结构住宅时可方便围护墙体的安装。为了验证菱形网格支撑的抗震性能,对单跨两层的菱形网格支撑结构进行了有限元拟静力分析,并与传统的单斜杆支撑、人字形支撑以及交叉支撑在相同用钢量下进行了对比。研究结果表明:菱形网格支撑不易发生屈曲破坏,结构延性好,在不增加用钢量的前提下,仍具有较大刚度和承载能力。菱形网格支撑框架结构对框架尤其是边柱产生了不利影响,因此根据结构力学基本假定,考虑菱形网格支撑对边柱的不利影响提出了菱形网格支撑框架结构的设计方法,供实际工程参考。Diamond grid braced frames structure(DBF)is a new type of lateral force support structure,which can be used in multi-high-rise steel structure housing to facilitate the installation of enclosure wall.In order to verify the seismic performance of diamond grid brace,the finite element quasi-static analysis of single-span two-story diamond grid braced structure was carried out,and compared with the traditional single diagonal bar brace,herring-bone brace and cross brace under the same steel consumption.The results showed that the diamond grid braced was not prone to buckling failure,and the structure had good ductility and stiffness without increasing the amount of steel.The diamond grid braced structure had adverse effects on the frame,especially on the side columns.Therefore,according to the basic assumptions of structural mechanics,considering the adverse effects of the diamond grid braced structure on the side columns,a design method for diamond grid braced structure was proposed,which could be used as a reference for practical engineering.

关 键 词：支撑框架 抗震性能 设计方法 抗侧承载力 

分 类 号：TU352.11[建筑科学—结构工程]