Sequential Measurement and Analysis of Large Underground Retaining Structures by Diaphragm Wall Anchor for the Spring Area

Table 2

The prestressed anchor design parameters.

site	Support type	Anchor	Angle (°)	Diameter (mm)	Free segment (m)	Anchoring segment (m)	Preload (kN)
H-H segment	Diaphragm wall	MG1	20	150	12.5	15.5	145
		MG2	20	150	10.5	19.0	200
		MG3	20	150	8.5	18.5	150
		MG4	20	150	6.0	13.0	105
L-L segment	Diaphragm wall	MG1	25	150	12.5	15.0	200
		MG2	22	150	10.5	19.5	280
		MG3	20	150	8.5	19.5	240
		MG4	20	150	6.0	14.5	185

Note. MG1, the first row; MG2, the second row; MG3, the third row; MG4, the fourth row.