摘要
双钢板组合剪力墙由两侧钢板、内填混凝土以及钢板间的机械连接件组成,具有自重轻、高轴压、高延性、薄墙体、抗震性能好、装配率更高等诸多优势,随着建筑高度和功能要求的不断提高,得到了广泛的应用和发展。为此,总结了双钢板组合剪力墙轴压性能的研究现状,介绍目前主要机械连接件形式中的栓钉连接、约束拉杆连接、混合连接、新型机械连接等,选取作为抗震、抗剪等复杂力学性能基础的轴压性能为主线,分析总结了不同机械连接件形式下的轴压承载力和破坏模式以及其受不同参数变量的影响规律,并对双钢板组合剪力墙的初始刚度、距厚比(连接件间距与钢板厚度之比)限值、轴压承载力计算理论进行分析。最后从理论研究、机械连接件、连接节点、施工应用、耐久性5个方面指出目前研究存在的若干问题,并对双钢板组合剪力墙在高层建筑中的未来发展趋势进行展望。基于对目前研究的分析得出:钢板的屈曲是决定双钢板组合剪力墙极限轴压承载力的关键因素,根据距厚比大小,双钢板组合剪力墙破坏模式分为两种情况:钢板先屈曲后屈服和钢板先屈服后屈曲。在工程中,需要通过改变距厚比避免钢板屈曲先于屈服的破坏形式。沿墙体试件高度和宽度布置一定量的机械连接件,可使混凝土充分发挥材料性能,阻止钢板屈曲引起的脆性破坏,提高试件的轴压承载力和延性,保证墙体的刚度直到失效几乎保持不变。
Double-steel-plate composite shear wall,consisting of bilateral steel plates,in-filled concrete,and mechanical connectors between steel plates,has many advantages such as light weight,high compression,high ductility,thin wall,good seismic performance,and higher prefabrication rate.With the continuous improvement of building height and functional requirements,it has been widely used and developed.This paper summarized the research status of the axial compression performance of double-steel-plate composite shear wall and introduced several prevailing mechanical connector types including shear studs,binding bolts,hybrid connections,new mechanical connections,and so on.Then focusing on the axial compression performance,which is the basis of complex mechanical properties such as earthquake resistance and shear resistance,the change laws of axial compression bearing capacity and failure modes under the influences of different mechanical connector types and parameter variables were analyzed and summarized.The initial stiffness,limiting value of distance-to-thickness ratio(the ratio of connector distance to steel plate thickness),and calculation theory of axial compression capacity for double-steel-plate composite shear wall were also analyzed.Finally,this paper pointed out some problems in the current research from five aspects:theoretical studies,mechanical connectors,connecting joints,construction applications,and durability,and gave a prospect on the future development trend of double-steel-plate composite shear walls in high-rise buildings.Based on the analysis of current research status,it is concluded that:the buckling of steel plate is the key factor to determine the axial compressive bearing capacity of double-steel-plate composite shear wall,and according to the value of distance-to-thickness ratio,the failure modes of double-steel-plate composite shear wall are divided into two cases:the steel plate buckles before yielding,and the steel plate buckles after yielding.In engineering practice,it is required to avoid the failure mode in which the steel plate buckles before yielding by changing the distance-to-thickness ratio.Arranging a certain amount of mechanical connectors along the height and width of the wall specimen can make full use of the material properties of concrete,prevent the brittle failure caused by the steel plate buckling,improve the axial compression bearing capacity and ductility of the specimen,and ensure that the wall stiffness remains almost constant until failure.
作者
游业刚
李健
王腾
黄立朋
高岗
Yegang You;Jian Li;Teng Wang;Lipeng Huang;Gang Gao(School of Civil Engineering,Qingdao University of Technology,Qingdao 266500,China)
出处
《钢结构（中英文）》
2022年第8期1-8,共8页
Steel Construction（Chinese & English）
关键词
双钢板组合剪力墙
轴压性能
机械连接件
double-steel-plate composite shear wall
axial compression performance
mechanical connector
