Page 76 - Dynamic Loading and Design of Structures
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Figure2.21 Three-storey frame structure with rigid girders.
Table 2.2 Eigenvalues and eigenvectors of the three-storey frame.
2
Eigenvector ω (rad/sec) 2 T(sec) Φ ln Φ 2n Φ 3n
1 69.3 0.755 + 1.00 + 1.471 + 1.639
2 579.0 0.261 + 1.00 −0.146 −1.041
3 1231.0 0.179 + 1.00 −2.220 +2.680
placement y3(t) at the third storey level are given below separately (see eqn (2.65)) as
(2.71)
