Cant tell ya where we got it from though: Allowable deflection of retaining wall BigH Geotechnical 21 Jan 09
For a complete version of this document click here. Now we turn to the application of these theories to the practical design of sheet pile walls. Broadly speaking, there are three methods that can be used for the design of sheet pile walls: This chapter will deal with classical methods.
The bal- ancing of forces determines the values at the reaction locations from which the depth of penetration and the anchor force are derived. After this, the anchor or bracing system is designed using input data from these previous determinations.
A sheet pile wall sup- ports vertical earth fill, which attempts to fail along inclined planes, influenced by gravity. The soil resists this attempted failure by its inherent shearing strength, which is motivated by friction or by cohesion between the soil particles.
In the case of driving forces, the later- al pressure is reduced from vertical pressure by a coef- ficient Ko or Ka, and increased in the case of resisting forces by a coefficient Cantilever sheetpile.
Earth pressures can be estimated by utilizing equations Rankine or Coulomb or by graphical means. Additional influential factors include surcharge loads, ground water, seepage, external horizontal loads and earthquake.
Although other methods have been developed to analyse sheet-piling walls, classical methods have been successfullyused Cantilever sheetpile design many successful sheet pile walls. One of the appeals of classical methods for sheet pile design is that the calculations can be done by hand.
For many years, this was the only option. This analyzes both cantilevered and anchored sheet pile walls using classical methods described in this book.
In the example problems included below, we will include solutions for these problems using SPW Data Required for Analysis This book has discussed the traditional application of soil properties toward estimating driving and resisting forces against flexible retaining walls.
Having determined these forces, the structural analysis of the retaining system can be accomplished. Soil Weight Estimate weight from field density determinations or from laboratory measurements.
Use saturated weight for active pressures above the water level and submerged weight below. Use moist or dry weight for passive side above any water level and submerged weight below. For non-conservative designs, assume d as a fraction of f, or use the values given in Table Adhesion Adhesion between wall and soil is a phenomenon equiv- alent to friction between the two.
Adhesion cannot be counted on for the longer term and is generally ignored. Sloping ground behind or in front or in front of the wall will have an effect on the slope of the failure surface and ultimately the pressure coefficients Ka and Kp.
Land sited walls in conjunction with highways, railroads, private and commercial properties may exhibit sloped con- ditions on both active and passive sides. These slopes and most often positive slopes but could occasionally be nega- tive. If slopes are plane, Coulomb or Rankine equations can be used.
If irregular, wedge analysis will produce more accurate pressure determinations.
Surcharges It is common practice to include as a minimum, a uni-form live load of psf to account for materials stor- age and construction machinery near to the wall.
SPW has as a default a uniform live load of psf. Generally, heavy surcharge loads from raw material piles should be kept well back from either the wall or the anchor system so as not to influence wall pressures.
If this is not possible, the load should be supported on a deck and bear- ing piles. Heavy track-mounted cranes should be supported on piles so that possible settlement will not affect their opera- tion.
Marine handling equipment and trucking operating on rigid paving within the failure wedge can be accounted for as a uniform live load, however in the case of unpaved or light flexible pavement, heavy wheel loads may have to be separately treated as point loads.
CE Part C Retaining Structures Cantilever Sheet Pile Walls Fayoum University Faculty of Engineering Department of Civil Engineering. CE Foundation Design 2 Applications of Sheet Pile Walls Sheet pile walls are retaining walls constructed to retain earth, water or any other fill material. These walls are thinner in section as. Steel Sheet Piling Design Manual Notice “The information, including technical and engineering data, figures, tables, designs, drawings, details, suggested procedures, and suggested specifications. Feb 07, · As for deflection limits, I generally work with sheet piles or H-piles. I typically try to limit deflection to 25 mm. This not any written code, but rather due to a desire to limit secondary bending (p-delta) effects which are realy not considered in most sheeting analysis methods.
Loads from long footers, rectangular spread footings, roadways and railroads that would influence total pressure on the wall should be examined as line or strip loads using methods outlined in the section on surcharge loads. In gen- eral, surcharges should be discounted when calculating pas- sive resistance.The sheet pile wall considered in this example is m wide and has a height of m.
Beam contact elements are used to create a frictional interface between the beam and solid elements that accounts for the full kinematics of the beam elements and allows the . Steel Sheet Piling Design Manual Notice “The information, including technical and engineering data, figures, tables, designs, drawings, details, suggested procedures, and suggested specifications.
At the bottom of sheet pile, the sheet pile is subjected to active pressure on the excavation side, and passive pressure on the earth side. The active pressure is s . Design of Sheet Pile Walls Using TRULINE Composite Wall Sections – Design Methods and Examples A Report Presented to Formtech Enterprises, Inc./ TRULINE.
Cantilever sheet piles are used where the height of the soil or water to be retained is smaller than m. The various forces acting on a cantilever sheet pile wall are the active earth pressure on the back of the wall and the passive earth pressure on the front of the wall.
A cantilevered sheet pile wall performs somewhat like a cantilevered beam. The sheet piling is driven to a sufficient depth into the ground to become fixed as a vertical can- .