Reduction of Vehicle-Induced Vibration of Railway Bridges due to Distribution of Axle Loads through Track

Table 3

Mechanical characteristics of the eight simply supported bridges.

Span (m)	Natural frequency (Hz)	Mass per length (kg/m)
6	41.4	6400
8	26.3	10000
10	18.5	9100
12	13.0	12000
14	10.0	13000
16	8.7	13500
18	7.2	14600
20	6.0	16000