Structural Responses of Reinforced Concrete Pile Foundations Subjected to Pressures from Compressed Air for Renewable Energy Storage

International Journal of Concrete Structures and Materials

Table 1 Design of the pile foundation.

N	N_Ed (kN)	n_p	N_p (kN)	d_o (m)	L_p (m)	Q_b (kN)	Q_s (kN)	Q_all (kN)	N_p/Q_all	Maximum d_i (m)
5 m × 5 m column spacing (A_tr = 25 m²)
2	650	1	650	1	6.5	1286	364	671	0.97	0.93
4	1300	2	650	1	6.5	1286	364	671	0.97	0.93
6	1950	3	650	1	6.5	1286	364	671	0.97	0.93
8	2600	3	867	1	9	1286	653	864	1.00	0.91
10	3250	3	1083	1	11.5	1286	1023	1111	0.98	0.88
6 m × 6 m column spacing (A_tr = 36 m²)
2	936	1	936	1	10	1286	791	956	0.98	0.90
4	1872	2	936	1	10	1286	791	956	0.98	0.90
6	2808	3	936	1	10	1286	791	956	0.98	0.90
8	3744	3	1248	1	13	1286	1285	1286	0.97	0.86
10	4680	4	1170	1	12.5	1286	1195	1225	0.96	0.87
7 m × 7 m column spacing (A_tr = 49 m²)
2	1274	2	637	1	6	1286	316	639	1.00	0.93
4	2548	3	849	1	9	1286	653	864	0.98	0.91
6	3822	4	956	1	10	1286	791	956	1.00	0.90
8	5096	4	1274	1	13	1286	1285	1286	0.99	0.86
10	6370	4	1593	1	16.5	1286	1971	1628	0.98	0.82