Seismic Response Analysis and Control of Frame Structures with Soft First Storey under Near-Fault Ground Motions

Table 3

Comparison of the maximum acceleration and displacement results of the bottommost layer.

Ground motion type		Maximum acceleration of the bottom layer (m/s^2)			Maximum displacement of the bottom layer (mm)
		Model 1	Model 2	Model 3	Model 1	Model 2	Model 3
Near-fault pulsed ground motion	802	2.67	2.47	2.51	33.6	14.6	11.5
	983	2.11	1.84	2.00	41.3	16.5	20.5
	147	3.39	3.03	3.22	53.9	23.5	26.6
	3746	1.75	1.48	1.48	36.5	16.6	22.9
	767	2.84	3.09	3.29	67.3	20.8	24.1
	1510	2.14	2.00	2.26	136	21.7	25.0
	568	2.33	1.85	2.21	29.5	14.3	17.2
	828	2.01	1.83	1.82	16.4	9.07	10.9
	Average value	2.41	2.19	2.34	51.8	17.1	19.8
	Reduction rate	—	9%	3%	—	67%	62%
Near-fault no-pulse ground motion	779	1.83	1.73	1.77	31.8	10.0	11.9
	989	2.43	2.06	2.08	27.3	11.9	13.1
	587	2.25	1.99	2.21	19.5	11.1	12.0
	1012	2.84	2.26	2.39	31.4	14.3	12.3
	Average value	2.33	2.01	2.11	27.5	11.8	12.3
	Reduction rate	—	14%	10%	—	57%	55%