Mode Number

Hollow Pier Bridge

Solid Pier Bridge

Frequency

Description

Frequency

Description

1

0.525

The main beam bending, and its corresponding pier transverse bending

0.494

The main beam transverse bending, and its corresponding pier transverse bending

2

0.576

The main beam is laterally symmetrically curved, and the piers are bent laterally

0.538

The main beam is laterally symmetrically curved, and the piers are bent laterally

3

0.628

Lateral bending of #2, #3, #6 and #7 piers and its corresponding girder

0.587

The main beam is laterally symmetrically curved, and the piers are bent laterally

4

0.764

The main beam transverse anti-symmetrical bending, the pier transverse bending

0.708

The main beam transverse anti-symmetrical bending, the pier transverse bending

5

0.936

The main beam transverse symmetrical bending

0.827

The main beam is symmetrically curved

6

1.014

#1, #8 piers transverse anti-symmetric bending

0.895

#1, #4, #5, #8 piers bent laterally and its corresponding transverse anti-symmetric bending of girder

7

1.129

#1, #4, #5 and #8 piers longitudinal displacement

1.063

#1, #4, #5 and #8 piers longitudinal displacement

8

1.3

The main beam transverse symmetrical bending, the pier transverse bending

1.159

The main beam is laterally symmetrically curved, and the piers are bent laterally

9

1.482

The main beam is laterally anti-symmetrically bent, and the piers are bent laterally

1.309

The main beam transverse anti-symmetrical bending, the pier transverse bending

10

1.62

#2 pier longitudinal bending

1.367

#2 pier longitudinal bending

11

1.696

#3 pier longitudinal bending

1.427

#3 pier longitudinal bending

12

1.779

#6 pier longitudinal bending

1.501

#6 pier longitudinal bending

13

1.813

#7 pier longitudinal bending

1.546

#7 pier longitudinal bending

14

1.886

#1, #2, #3 piers and its corresponding girder vertical bending

1.722

#1, #2, #3 piers and its corresponding girder vertical bending

15

1.911

#6, #7, #8 piers and its corresponding girder vertical bending

1.748

#6, #7, #8 piers and its corresponding girder vertical bending