Table 2 Parameters of strut structure.

From: Investigation on performance of steel strut servo system braced deep excavation adjacent to existing buildings: a case study

Strut elements

Cross section (mm)

Unit weight (kN m3)

Elasticity modulus, E (GPa)

Poisson’s ratio

Diaphragm wall

T = 800, HD = 32,000

25

32.5

0.25

Pile

DP = 600, L = 30,000

25

32.5

0.25

Column

400 × 400

25

32.5

0.25

Beam

300 × 300

25

32.5

0.25

Floor layer

TF = 130

25

32.5

0.25

Steel strut

D = 0.609, t = 0.016

78

200

0.3

Concrete strut

800 × 800

25

32.5

0.25

Crown beam

1,000 × 1,000

25

32.5

0.25

Waist beam

800 × 800

78

200

0.3

  1. T is the thickness of the diaphragm wall, HD is the height of the diaphragm wall, DP is the diameter of the pile, L is the length of the pile, TF is the thickness of the floor, D is the diameter of the steel strut, and T is the thickness of the steel strut.
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