Optimization Method for Irregular Piled Raft Foundation on Layered Soil Media

Table 5

Ultimate bearing capacity of single piles with different pile diameters and lengths.

Ultimate bearing capacity of a single pile	d = 2.8 m (l = 75 m)	d = 1.3 m (l = 37 m)	d = 1.4 m (l = 37 m)	d = 1.5 m (l = 37 m)	d = 1.6 m (l = 37 m)	d = 1.7 m (l = 37 m)
Field test value^a (MN)	44.7^c	—	—	—	—	—
Empirical value^b (MN)	43.6	15.2	16.2	17.2	18.2	19.2

^aThe field test value is obtained through a single pile bearing capacity test. ^bThe empirical value is calculated by equation (10). ^cField test value is from Jiang [26].