Dynamic Property of a New Type of Postearthquake Temporary Prefabricated Lightweight Steel Structure

Table 3

Natural frequencies obtained with the finite element method.

Vibration mode	Natural frequency in X direction (Hz)			Natural frequency in Y direction (Hz)
	Magnification factor of stiffness for prefabricated hanger column
	1.0	1.1	1.2	1.0	1.1	1.2
First order	10.5626	12.8751	16.9137	8.0154	9.9852	11.0617
Second order	33.2546	40.2262	44.0106	22.4567	26.7878	33.7984