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Table 1 Dynamic parameters of the structure.

From: Experimental Verification of Modal Identification of a High-rise Building Using Independent Component Analysis

Floor mass

m = 18.62 kg

Floor stiffness

k = 4*12EI/L3

  = 7.7945 kN/m (L = 400 mm)

  = 11.635 kN/m (L = 350 mm)

Mass matrix

\(\left[ {\begin{array}{*{20}c} m & 0 & 0 \\ 0 & m & 0 \\ 0 & 0 & m \\ \end{array} } \right]\)

Stiffness matrix

\(\left[ {\begin{array}{*{20}c} {2k} & { - k} & 0 \\ { - k} & {2k} & { - k} \\ 0 & { - k} & k \\ \end{array} } \right]\)

Modal parameters

Mode 1

Mode 2

Mode 3

Natural frequency

 L = 400

1.4492 Hz

4.0605 Hz

5.8676 Hz

 L = 350

1.7706 Hz

4.9610 Hz

7.1689 Hz

Mode shape normalized to the top floor

0.4450

− 1.2467

1.8026

0.8021

− 0.5547

− 2.2474

1.0000

1.0000

1.0000