Table 2 Critical load of standard and Stiffened USSSP.

From: Determining the critical buckling load of locally stiffened U-shaped steel sheet pile using dynamic correlation coefficient method

Project

l/m

Ncr/kN

λ

\(\overline{{\lambda_{0} }}\)

φ

Nmax/kN

U-shaped steel sheet pile

10

1781.03

113.43

1.166

0.502

1216.00

20

445.26

226.85

2.333

0.160

388.70

30

197.89

340.28

3.499

0.075

181.62

Full-length stiffened U-shaped steel sheet piles

10

2616.9

117.37

1.21

0.480

1828.16

20

654.2

234.74

2.41

0.151

574.26

30

290.8

352.11

3.62

0.070

267.68

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