Comparative Study of Seismic Behavior between Monolithic Precast Concrete Structure and Cast-in-Place Structure

Table 2

Natural frequency of CIPS and MPCS.

PGA/g	Frequency/Hz
	First frequency				Second frequency
	-direction		-direction		-direction		-direction
	MPCS	CIPS	MPCS	CIPS	MPCS	CIPS	MPCS	CIPS
Initial	6.19	5.13	7	5.69	25.00	20.75	27.94	23.25
0.035 g	4.81	5.12	5.13	5.63	20.56	20.13	22.44	23.5
0.07 g	4.80	5.12	5.06	5.5	20.06	19.88	22.00	23.25
0.14 g	4.69	4.56	4.94	5.37	19.69	19.88	21.06	22.06
0.22 g	4.26	4.13	4.44	4.81	18.25	18.13	19.81	20.94
0.40 g	2.79	2.81	3.75	3.75	14.19	13.56	16.25	16.56
0.62 g	2.31	1.94	3.00	2.69	11.63	10.06	13.63	13.00
0.80 g	1.86	1.55	2.88	2.54	9.38	9.42	13.18	12.88