Design and Performance of Concrete Pile Strengthened with Lengthened Steel-Tube Core: Model Tests and Numerical Simulations

Table 2

Length of the sampling piles.

Pile number	0#	1#	2#	3#	4#	4’#
L (mm)	800	800	800	800	800	1300
l (mm)	0	200	300	400	500	0