Home Courses Articles Watch! Tools Downloads Request ----------------------------------------------------- Soil Mechanics > Physical Properties of Soil > Soil Phase Relationships > Friction Angle of Soils + Typical Values > Cohesion Intercept of Soils + Typical Values > Lateral Earth Pressure > At-Rest State > Rankine's Lateral Earth Pressure > Coulomb's Lateral Earth Pressure > Slope Stability > Effects of Water on Slope Stability > Infinite Slope Analysis > Circular Arc Failure of Slope Analysis > Critical Failure Surface > Geotechnical Laboratory and In-Situ Testing Methods > 101 How To Plan A Construction Site Soil Investigations Program > 101 How to Write a Geotechnical Report > Advanced Soil Mechanics Topics > Soil Liquefaction: Factor of Safety, Calculations, and Simplified Procedures Foundation Analysis and Design > Settlement of Shallow Foundations > Settlement types, definitions, and general equation > Immediate settlement computations > Primary Consolidation > Secondary Compression > Bearing Capacity of Shallow Foundations > Terzaghi's Method > Meyerhof's Method > Brinch Hansen's Method > Bearing from SPT Number > Effect of Ground Water Table > Bearing Capacity of Piles (Deep Foundations) > Ultimate Tip Resistance of Piles > Shaft Resistance of Piles > Sheet-pile Walls: Cantilevered and Anchored > Cantilever Sheet Pile Walls Penetrating Sandy Soils > Anchored Sheet Pile Walls Penetrating Sandy Soils > Factors of Safety for Cantilevered Sheet Pile Walls Load Calculation > Structural Loading > Dead Load vs Live Load > Load Combinations Reinforced Concrete Design > General Topics of Concrete Material and Design > What Is Concrete? > Concrete Properties > Section Properties of Reinforcing Bars & Cement Types > Load Combinations of Concrete Design > Design of Concrete Members > Reinforced Concrete Beam Design > Flexural Design of Reinforced Concrete Beams > Serviceability of Reinforced Concrete Beams > Shear Design of Reinforced Concrete Beams Structural Steel Design > General Topics of Steel Material and Design > Steel Structures > Connections in Steel Structures > Cold Formed Steel Sections Construction > Elements of construction > Construction Site Layout Planning Elements > All Types of Roofs And Their Details > Types of Foundations From Construction Point of View > All Types of Foundation Materials Timber Design > Design of Timber Members > Design of Sawn Timber Beams or Joists > Design of Sawn Timber Columns and Compressive Members Masonry Design Finite Elements Method > Basics of Finite Elements > Introduction to Finite Elements And the Big Picture > One-dimensional Bars/Springs > Plane Trusses Transportation Introduction Concepts & Formulas Videos Solved problems Download Files Anchored Sheet Pile Walls Penetrating Sandy Soils Courses > Foundation Analysis and Design > Sheet-pile Walls: Cantilevered and Anchored > Anchored Sheet Pile Walls Penetrating Sandy Soils
Introduction on Anchored Sheet Pile Walls Penetrating Sandy Soils :
Connected or semi-connected sheet piles are often used to build continuous walls for waterfront structures that range from small waterfront pleasure boat launching facilities to large dock facilities. In contrast to the construction of other types of retaining wall, the building of sheet-pile walls does not usually require dewatering of the site. Sheet piles are also used for some temporary structures, such as braced cuts. Several types of sheet pile are commonly used in construction: (a) wooden sheet piles, (b) precast concrete sheet piles, and (c) steel sheet piles. Aluminum sheet piles are also marketed.
Sheet-pile walls may be divided into two basic categories: (a)
cantilever and (b) anchored.
Concepts and Formulas of Anchored Sheet Pile Walls Penetrating Sandy Soils:
Variation of net pressure diagram and variation of moment versus depth of an anchored sheet pile wall with a granular soil backfill is shown below:
The objective in analysis of sheet pile walls is to get to a depth of embedment (D) sufficient for the wall stability. For this purpose, one needs to know
the lateral earth pressure theory first.
Step-by-step procedure for obtaining pressure diagram is given below:
1. Calculate Ka and Kp (active and passive earth pressure), based on
Rankine's method or Coulomb's method;
2. Calculate horizontal stress at point "C" and "D" respectively as:
3. Calculate L3
4. At z = L
1 + L 2 + L 3 + L 4, the net pressure is given by
5. Summing the forces in the horizontal direction (per unit length of the wall) gives:
Area of the pressure diagram ACDE - area of EBF - F = 0
where F = tension in the tie rod/unit length of the wall perpendicular to the screen
where P = area of the pressure diagram ACDE
6. Calculate the distance of P from point "E" (called z-bar on figure), by taking the moment about point "E" (P has to induce equal moment to the pressure of ACDE area).
7. Solving the following fourth order equation yield L4
this equation can be solved by trial-and-error method.
8. Draw the pressure diagram like the one given above, for which the depth of embedment is
D = L
3 + L 4
There is an EXCEL spreadsheet developed to the abovementioned procedure almost automatically, you can download it from the
section below this article
Solved sample problems of Anchored Sheet Pile Walls Penetrating Sandy Soils:
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