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.
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
Key words
high-rise frame-shear wall/isolation structure/inverted trapezoidal load/reasonable stiffness/collaborative work
维普
万方数据