In the method,floors are considered as bending-shear beams and floor stiffness,elasticity radius and eccentricity of stiffness are used to form element horizontal stiffness distribution.

• 该法将楼板视为剪切弯曲深梁,并用单元平均刚度、刚度偏心距和弹力半径来构造侧移刚度分布。