基于交错桁架结构的抗震性能设计与有限元模拟验证  

Seismic Performance Design and Finite Element Simulation Verification Based on Staggered Truss Structures

作　　者：王珏 WANG Jue(Zhongyu Design Co.,Ltd.,Qingyuan 511518,China)

机构地区：[1]中誉设计有限公司,广东清远511518

出　　处：《广东土木与建筑》2024年第5期11-16,共6页Guangdong Architecture Civil Engineering

摘　　要：近年来,强震频繁发生,对于地震地区的建筑物其抗震性能设计尤为重要。但如今应用广泛的交错桁架结构,抗震性能低无法在地震地区推广使用。针对这一问题,研究提出一种基于两边连接钢板的交错桁架结构,并通过地震反应谱、静力弹塑性分析与有限元模拟验证来对该结构的抗震性能进行验证。结果表明,随着楼层的增加,试件1和试件2在横轴和纵轴方向上的位移量均呈线性增加的趋势,在整体上较为稳定,没有明显的薄弱层。试件1与试件2在X与Y方向的层间位移角均低于0.004,满足建筑结构设计要求。在有限元验证结果中,有限元计算结果与测验结果基本一致,即抗震性能符合要求。综上,研究提出的两边连接钢板式交错桁架结构具有可行性,能提高交错桁架结构的抗震性能。In recent years,strong earthquakes occur frequently,which is particularly important for the seismic performance design of buildings in earthquake areas.However,the staggered truss structure,which is widely used today,has low seismic performance and can not be popularized in earthquake areas.To solve this problem,a staggered truss structure based on two connected steel plates was proposed in this paper.And verifies the seismic performance of the structure through seismic response spectrum,static elastic-plastic analysis,and finite element simulation verification.The results show that as the number of floors increases,the displacement of specimen 1 and specimen 2 in both the horizontal and vertical directions shows a linear increasing trend,and they are relatively stable overall without obvious weak layers.The interstory displacement angles of specimen 1 and specimen 2 in X and Y directions are lower than 0.004,which meets the requirements of building structure design.In the finite element verification results,the finite element calculation results are basically consistent with the test results,that is,the seismic performance meets the requirements.In conclusion,the proposed staggered truss structure with two sides connected steel plates is feasible and can improve the seismic performance of staggered truss structure.

关 键 词：交错桁架结构 抗震性能 消能段 塑性设计 有限元模拟 

分 类 号：TU352.11[建筑科学—结构工程]