Estimations of the Jacking Forces of Large-Sized Rectangular Jacking Pipes Based on a Displacement Control Method

Table 8

Comparison of jacking force estimation deviation for case A1 under different grouting pressure programs.

Jacking distance (m)		Monitoring (kN)	Program 1 (kN)	Program 2 (kN)	Program 3 (kN)	Program 4 (kN)	Theoretical (kN)
13.5	Jacking force deviation	7303.67	3685.86	6849.99	8378.51	7856.20	7510.60
		N/A	−49.53%	−6.21%	14.72%	7.57%	2.83%
28.5	Jacking force deviation	12213.24	5113.56	10463.37	12954.75	12691.43	10294.60
		N/A	−58.13%	−14.33%	6.07%	3.92%	−15.71%
43.5	Jacking force deviation	14991.63	5921.51	12508.22	15544.50	15427.74	13078.60
		N/A	−60.50%	−16.57%	3.69%	2.91%	−12.76%
58.5	Jacking force deviation	16938.24	6487.59	13940.90	17358.95	17344.87	15862.60
		N/A	−61.70%	−17.70%	2.48%	2.40%	−6.35%
73.5	Jacking force deviation	18438.01	6923.72	15044.71	18756.89	18821.93	18646.60
		N/A	−62.45%	−18.40%	1.73%	2.08%	1.13%
88.5	Jacking force deviation	19658.27	7278.57	15942.80	19894.30	20023.71	21430.60
		N/A	−62.97%	−18.90%	1.20%	1.86%	9.02%