Dynamic Characteristics and Time-History Analysis of Hydraulic Climbing Formwork for Seismic Motions

Table 7

The first three natural frequencies of the core tube.

Mode of vibration	Natural frequency (Hz)		Mode shape
	PKPM accurate model	Simplified finite element model	PKPM accurate model	Simplified finite element model
1	0.181	0.182	The X direction translation	The X direction translation
2	0.184	0.182	The Y direction translation	The Y direction translation
3	0.315	0.315	The torsion of core tube	The torsion of core tube