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Journal of Infrastructure Preservation and Resilience

Table 3 Estimated modal parameters for Tianjin Yonghe Bridge based on field measurement

From: Dynamic displacement estimation and modal analysis of long-span bridges integrating multi-GNSS and acceleration measurements

Mode

Frequency (Hz)

Damping ratio (%)

FE model

GNSS

Acceleration

Data fusion

GNSS

Acceleration

Data fusion

1

0.3996

0.4150

0.4152

0.4152

1.53

1.46

1.38

2

0.5522

0.5981

0.5860

0.5862

1.26

1.22

1.20

3

0.9332

0.9643

0.9644

0.9640

1.08

0.91

0.95

4

1.0559

–

1.0855

1.0853

–

0.86

0.90

5

1.4217

–

1.4533

1.4536

–

0.80

0.85

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