Model Test on the Vibration Reduction Characteristics of a Composite Foundation with Gravel Cushion under Different Seismic Wave Amplitudes

Table 3

Parameter settings for shaking table tests (El Centro seismic waves).

No.	Peak acceleration of shaking table (g)	Gravel aggregate gradation	Buried depth of gravel cushion
S-1-1	0.1	Single-sized	Beneath raft
S-1-2			Above raft
D-1-1		Two-sized	Beneath raft
D-1-2			Above raft
C-1-1		Continuous gradation	Beneath raft
C-1-2			Above raft
S-2-1	0.2	Single-sized	Beneath raft
S-2-2			Above raft
D-2-1		Two-sized	Beneath raft
D-2-2			Above raft
C-2-1		Continuous gradation	Beneath raft
C-2-2			Above raft
S-3-1	0.3	Single-sized	Beneath raft
S-3-2			Above raft
D-3-1		Two-sized	Beneath raft
D-3-2			Above raft
C-3-1		Continuous gradation	Beneath raft
C-3-2			Above raft