Steel sheet pile support is widely used in ports, rivers, and areas where soil and sand fall, preventing landslides and flow fields. Its excellent construction quality and efficiency have earned it widespread acclaim.

The inner layer spacing and support calculations for steel sheet pile support are scientifically based and cannot be attributed to the support algorithms of experts. At Hanzi, we will analyze the relevant technical aspects of steel sheet pile use using real-world data. Let's take a closer look.

Calculation method of steel sheet pile support data:

* 1 Pile top elevation H1: 4.100m H2: 3.000m

* Level 2 construction site elevation H0: 4.350m Excavation bottom elevation H3: -3.400m Excavation depth H: 7.7500m

* 3 Soil bulk density and soil

1: 18.3KN/m3 Gamma

* Average value of gamma float density: 10.0KN/m3

* Average diameter of internal friction angle: b=9.0m Length a=20.0m

* Excavation pit 20.10～4

* Post-excavation pit q: 20.0KN/m2 5 pits

(1) External steel sheet pile force, the influence of pile-soil pressure on strength and stress distribution ka=tg2 (45 - /2) =tg2 (45 - 20.10/2) = 0.49 kp = tg2 (45 + tg2) = 2.05

* Pile side load converted to filling height h, h = q/r = 20.0/18.3 = 1.09m

* Pile top soil pressure strength Pa1 Pa1 = r (h + 0.25) Ka = 18.3 * * * 0.49 = 12.0 kN/m2 (1.09 + 0.25) Pa2

* Water level soil pressure strength Pa2 = r (h + 4.35 - 3.00 Ka = 18.3) * * * (1.09 + 4.35 - 3.00) 0.49 = 21.8 kN/m2

* Excavation surface soil pressure strength Pa3 * Pa3 = [r (h + 4.35 + tg2])] = -3.00) (r-rw) (3.00+3.40)}Ka * = [18.3 (1.09+4.35 -3.00) + (18.3-10) x (3.00+3.40)] * 0.49 = 47.8 kN/m²

* (After pressure pumping at the cofferdam excavation face) Pa4: Pa4 = gamma (3.00+3.40) * = 10 (3.00+3.40) = 64.0 kN/m².

The spacing between steel sheet pile support layers is determined by the arrangement of the steel sheet piles and the maximum bending that the cantilever sheet piles can withstand. What is the maximum allowable span?

According to the calculation formula for steel sheet piles, we obtain specific and accurate data: M0 = Wz * [Sigma] = 189.0 kN*m.