Table 4 Selected input parameters and analysis cases of the RCBPM

Material:

f´_c:

18

21

27

35

f_y:

300

350

412

549

Geometry

r:

0.02

0.03

0.04

0.05

L/D:

4

6

8

10

Transverse reinforcing steel:

Ø:

sh

ss

s:

0.05

0.10

0.15

0.20

d_t:

2

3

4

5

Longitudinal reinforcing steel:

ρ_l:

0.7

1.5

3

4.5

d_l:

2

3

4

5

Axial load:

P:

5

15

20

25

Soil-structure interaction:

k_s:

5 × 10⁵

5 × 10¹⁰

1 × 10¹¹

2 × 10¹¹