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a 1 (X,k) = modal pseudo-acceleration of the first mode modal single degree of freedom system at the kth push step for the earthquake direction [m/s 2 ]
d 1 (X,k) = (X) The modal displacement of the modal single degree of freedom system belonging to the first mode at the kth thrust step for the earthquake direction [m]
m tx1 (X,1) = (X) for the earthquake direction, which is determined in the first thrust step in the x-axis direction and remains unchanged throughout the thrust calculation. modal effective mass of base shear calculated according to constant mode shape [t]
m txk (X,k)
= (X) modal effective mass of the base shear force calculated according to the constant mode shape renewed with the free vibration calculation at the kth thrust step in the x-axis direction for the earthquake direction [t]
u ix1 (X,k) = (X) for the earthquake direction The displacement [m]
Δa 1 (X,k) = (X) calculated in the x-axis direction at the i-th floor at the k-th thrust step is the modal pseudo-acceleration of the modal single degree -of- freedom system of the first mode at the k-th thrust step for the earthquake direction. increment [m/s 2 ]
Δd 1 (X,k) = (X) belonging to the first mode at the kth push step for earthquake modal single degree of freedom system 's modal displacement of [m]
Φ Nx1 (1) = N th layer on the first push is determined at step and push account never changed during the fixed mode shape "amplitude in the x direction
Φ Nx1 (k) = N-th floor The amplitude of the fixed mode shape determined in the first thrust step and renewed with the free vibration calculation in the kth thrust step , in the x direction
Γ 1 (X,1) = (X) fixed mode shape determined in the first thrust step for the earthquake direction and never changed during the thrust calculation modal contribution multiplier calculated according to
Γ 1 (X,k) = modal contribution factor calculated according to thevariablethe variable mode shape renewed with free vibration calculation at each k th thrust step for (X) earthquake direction
ω 1 (k) = renewed at each k th thrust step first mode natural angular frequency [rad/s] found from free vibration calculation
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Obtaining the performance point described in detail inDetermination of Modal Displacement and Performance Point (5B.3).
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