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

Table 5

Participation mass ratio for different modals.

Modal	Frequency (Hz)	Period (s)	UX	UY	UZ	RX	RY	RZ
First order	11.062	0.091	0	0.78	0	0.91	0	0.240
Second order	15.578	0.064	0.73	0	0	0	0.81	0.220
Third order	18.612	0.054	0	0	0	0	0	0.300

UX, UY, and UZ: participation mass ratios along X-axis, Y-axis, and Z-axis, respectively; RX, RY, and RZ: participation mass ratios around X-axis, Y-axis, and Z-axis, respectively.