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Table 4 Comparison of mode shape frequencies for A- and A-D-shape pylon with and without sag effect

From: Seismic performance of cable-stayed bridges with different geometric conditions

A-inclined

Difference (cycle/sec)

A-D inclined

Difference (cycle/sec)

Mode No.

Ignoring sag effect

Taking sag effect

Mode No.

Ignoring sag effect

Taking sag effect

Frequency

Frequency

(cycle/sec)

(cycle/sec)

1

0.452715

0.448629

0.003914

1

0.45156

0.447624

0.003936

2

0.506174

0.506163

0.000011

2

0.505474

0.505459

0.000015

3

0.635336

0.635246

0.0029

3

0.634883

0.63197

0.002913

4

0.995691

0.992758

0.002933

4

0.796518

0.797282

0.000764

5

1.09261

1.09112

0.001482

5

0.896326

0.897728

0.001402