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Straight web sections - AS Sheet piles


Straight web sheet piles are designed to form cylindrical structures, retaining a soil fill. These cylindrical structures are generally closed.

The stability of constructions built up in this way, a steel envelope and an internal body of soil is guaranteed by their own weight.

Straight web sheet piles are mostly used on projects where rock layers are close to ground level, with deep excavations, or where anchoring would be difficult or even impossible.

Straight web sheet pile structures are made as circular cells or diaphragm cells depending on the site characteristics, or the particular requirements of the project.

The forces developing in these sheet pile sections are essentially horizontal traction forces, requiring an interlock resistance corresponding to the horizontal force in the web of the pile.

Maximum rolling lenght: 31.0 m

  Straight web sections dimensions and characteristics (Metric)
  Straight web sections dimensions and characteristics (Imperial)


Interlock Strength

The interlock complies with EN 10248. An interlock strength R of 5500 kN/m for AS 500-12.5 and AS 500-12.7, 5000 kN/m for AS 500-12.0, 3500 kN/m for AS 500-11.0 and 3000 kN/m for AS 500-9.5 can be obtained. The required steel grade in these cases is S 355 GP.

For verification of the strength of piles, both yielding of the web and failure of the interlock should be considered. The magnitude of safety factors depends on the calculation method and assumptions, the installation method and the function of the structure.

STEEL GRADES

The standards we normally refer to regarding steel grades for hot-rolled sheet piles is EN 10248 Part 1. The mechanical properties and chemical composition are shown in the table below.

  Steel grades for Hot rolled Sections

Materials to other specifications, such as special steels, steel with an improved corrosion resistance, or copper addition in accordance with EN 10248 Part 1 Chapter 10.4 can be supplied on request.

Grade A 690 with higher yield strength upon request.

AMLoCor - New corrosion resistant steel grade for marine applications
 
AMLoCor, ArcelorMittal’s new ‘low corrosion’ steel grade will undoubtedly revolutionize the design of port structures. One concern of designers and port authorities is the durability of marine structures like quay walls, breakwaters, jetties.

The main advantage of AMLoCor is a significant reduction of the corrosion rates in the ‘Low water zone’ and in the ‘Permanent immersion zone’, especially since in most cases the maximum bending moments, and consequently the steel stresses, are in the permanent immersion zone. 

  AMLoCor Brochure (1.87 MB)

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