Container Quay Crane Structural Response under Trolley Traveling

Table 4

The vibration characteristic of quay crane.

Degree	Frequency (Hz)	Mode of vibration
1	0.307	Lateral swing of waterside girder
2	0.451	Lateral swing of landside girder
3	0.747	The waterside and landside girders swing in the same direction
4	0.809	Longitudinal vibration of the upper structure (deformation of portal leg on waterside)
5	0.820	Longitudinal vibration of the upper structure (deformation of portal leg on landside)
6	1.084	Vertical swing at the end of the girder (the same direction as the gantry)
7	1.423	Vertical swing at the end of the girder (the reverse of the gantry)