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

Table 10

Comparison of jacking force estimation deviation for case B1 under different grouting pressure programs.

Jacking distance (m)		Monitoring (kN)	Program 1 (kN)	Program 2 (kN)	Optimal (kN)	Theoretical (kN)
13.5	Jacking force deviation	15811.09	5585.77	9837.41	14535.25	13459.80
		N/A	−64.67%	60.72%	−8.07%	−14.87%
28.5	Jacking force deviation	22437.69	9778.24	20340.25	22828.59	17131.80
		N/A	−56.42%	10.31%	1.74%	−23.65%
43.5	Jacking force deviation	26187.75	12150.81	26283.93	27521.87	20803.80
		N/A	−53.60%	−0.37%	5.09%	−20.56%
58.5	Jacking force deviation	28815.16	13813.10	30448.24	30810.13	24475.80
		N/A	−52.06%	−5.36%	6.92%	−15.06%
73.5	Jacking force deviation	30839.45	15093.81	33656.64	33343.57	28147.80
		N/A	−51.06%	−8.37%	8.12%	−8.73%
88.5	Jacking force deviation	32486.46	16135.83	36267.08	35404.85	31819.80
		N/A	−50.33%	−10.42%	8.98%	−2.05%