摘要
针对高层框架剪力墙隔震体系,基于隔震层上部框架剪力墙协同工作原理,建立了高层框架剪力墙基础隔震结构在倒梯形荷载作用下的简化模型,推导了倒梯形荷载作用下结构的最大层间弹性位移角表达式。采用弯剪型三质点模型,进一步推导了三质点模型的质量矩阵和柔度矩阵,利用振型分解反应谱法,根据底部剪力相等原理,得到了以层间位移角为限值约束条件下的剪力墙合理刚度表达式。提出了高层框架剪力墙隔震体系的剪力墙合理刚度交互设计方案。最后以一栋12层的框架剪力墙隔震结构为数值算例,按照剪力墙合理刚度的理论推导和交互设计方案,进行剪力墙合理刚度的计算和设计,通过数据分析验证了本文提出的算法和设计方案是可行的,可以为结构设计提供参考。
Aiming at the high-rise frame-shear wall isolation system,a simplified model of high-rise frame-shear wall base-isolated structure under inverted trapezoidal load is established based on the cooperative working principle of frames and shear walls in the upper part of the isolation layer,and the formula of the maximum inter-story elastic displacement angle of the structure under inverted trapezoidal load is derived.The mass matrix and flexibility matrix of the three-particle model are derived based on the bend-shear type three-particle model,and the reasonable stiffness formula of the shear wall under the constraint of the inter-story displacement angle is obtained by using the vibration mode decomposition response spectrum method and the principle of equal base shear force.The reasonable stiffness interaction design scheme of shear wall of high-rise frame-shear wall isolation system is proposed.With a 12-story frame-shear wall isolation structure as a numerical example,the reasonable stiffness of the shear wall is calculated and designed according to the theoretical derivation and interactive design scheme of the reasonable stiffness of the shear wall.Through data analysis and verification,the formulas and design scheme proposed in this paper are feasible and can provide a reference for structural design.
作者
刘小换
余尚
刘彦辉
Liu Xiao-huan;Yu Shang;Liu Yan-hui(Department of Architectural Engineering,Guangzhou Vocational and Technical University of Science and Technology,Guangzhou 510550,China;Guangdong Architectural Design&Research Institute Co.Ltd,Guangzhou 510010,China;State Key Laboratory for Seismic Reduction/Control&Structural Safety(Cultivation),Guangzhou University,Guangzhou 510405,China)
出处
《工程抗震与加固改造》
北大核心
2024年第4期95-101,共7页
Earthquake Resistant Engineering and Retrofitting
基金
广东省普通高校青年创新人才项目(2022KQNCX148)
广州科技职业技术大学校级课题(2024LG01)。
关键词
高层框架剪力墙
隔震结构
倒梯形荷载
合理刚度
协同工作
high-rise frame-shear wall
isolation structure
inverted trapezoidal load
reasonable stiffness
collaborative work
