Table 3: Fitting parameters of PHC compression pipe pile.

No L /m A1 A2 Lx0 p R-Square αpc αpm
No.3 12 0.03833 1.05840 0.82017 -1.47267 0.99988 0.39985 0.3975
No.12 12 0.00858 1.03313 0.79889 -1.98694 0.99942 0.30114 0.3005
No.25 12 0.01092 1.03253 0.85848 -1.81573 0.99987 0.37232 0.3749
No.469 12 0.05953 1.03878 0.79574 -1.88723 0.99957 0.34063 0.3451
No.496 12 0.07626 1.03190 0.83091 -1.93232 0.99942 0.37701 0.3824
No.518 12 0.14013 1.02351 0.73211 -2.26463 0.99988 0.31249 0.3153
No.1024 12 0.24927 1.02102 0.73666 -2.23838 0.99987 0.40474 0.4072
No.1046 12 0.17859 1.02441 0.75791 -2.21520 0.99965 0.36526 0.3692
No.1061 12 0.10877 1.03247 0.75942 -2.06028 0.99969 0.32900 0.3324
No.2091 12 0.23754 1.04386 0.73991 -1.78937 0.99969 0.44228 0.4432
No.2113 12 0.23726 1.04576 0.71324 -1.78258 0.99986 0.42836 0.4277
No.2140 12 0.06036 1.03557 0.88802 -1.61349 0.99997 0.44693 0.4480
No.2602 12 0.27496 1.04139 0.71084 -1.79867 0.99992 0.45312 0.4527
No.1550 11 0.19655 1.02371 0.85054 -1.91316 0.99942 0.47480 0.4787
No.1575 11 -0.0252 1.03837 0.89282 -1.61684 0.99978 0.39947 0.4019
No.1597 11 -0.0656 1.02590 0.89082 -1.79202 0.99936 0.35247 0.3593

Notes: max is Maximum load for load test,αpc is end resistance sharing ratio by calculating, αpm end resistance sharing ratio by measuring.