Calculation of Bearing Capacity and Deformation of Composite Pile Foundation with Long and Short Piles in Loess Areas

Table 4

Negative frictional resistance of the pile group consisting of 4 piles.

Number of long piles	Number of short piles	Single-pile negative frictional resistance of long piles (kN)	Single-pile negative frictional resistance of short piles (kN)	Pile-group effect coefficient	Pile-group negative frictional resistance (kN)
2	2	0.17	0.12	0.68	0.37