Dynamic Property Analysis of Orthotropic Bridge Deck with Local Fatigue Crack

Table 2

Frequency of local vibration mode (Type 1 damage).

Local mode	Frequency (Hz)
	Heathy	Case 1	Error (%)	Case 2	Error (%)	Case 3	Error (%)
1	126.21751	125.45765	−0.602	118.20422	−6.349	109.56704	−13.192
2	142.82004	142.54165	−0.195	140.18200	−1.847	117.87555	−17.466
3	148.12576	148.12061	−0.003	148.10308	−0.015	140.18688	−5.360
4	159.98489	158.16308	−1.139	158.07246	−1.195	148.10629	−7.425
5	162.14186	160.91106	−0.759	160.86859	−0.785	158.13833	−2.469