Hazard Protection Solutions

Keeping us safe with steel sheet piling solutions. Steel sheet piles help safeguard communities from natural disasters.

Dykes and flood protection barriers made of steel sheet piles are among the most efficient ways to protect against flooding and rising sea levels. Requiring minimal equipment, they can be easily installed, even in remote locations, with certified quality anywhere in the world. Dixeran® on-site declutching detectors ensure the integrity of the installation.

Faster construction of flood protection barriers with steel sheet piles

Flood Protection

 

Sheet pile walls can be used in a variety of ways for flood defence systems.

Possible applications include:

  1. When used as new protection structures, sheet piles can ensure: Watertightness, protection from dryness (weep holes), support, earth stabilization.
  2. For existing embankments, sheet piles provide increased strength.
  3. They are suitable for use in high seismic areas due to the intrinsic properties of steel (ductility, flexibility, and lighter structures with lower inertia).
  4. When space is limited (e.g., in ports or urban areas), sheet piles can form cantilever floodwalls.
  5. They are cost-effective, with a high speed of installation, immediate start, and short preparation period.
  6. Suitable for urban areas: vibratory sheet pile drivers cause less disturbance during installation (silent press equipment).

With a sheet pile wall, not only can an embankment be made watertight, but it can also be modified to hold back a larger design flood without requiring a greater footprint. This can be achieved by designing the sheet pile wall to project the requisite height above the crest.

When space is limited, such as in ports or urban areas, sheet pile walls can form freestanding floodwalls (small footprint), replacing flood embankments (large footprint).
 

Flood defence and bank protection 

Riverbank protection & dykes

Hazard protection solutions. Riverbank protection & dykes

Steel sheet pile walls can be used in various ways for riverbank protection and dykes. For new embankments, they ensure watertightness, support, and stabilisation. They are also used to strengthen existing embankments and can serve as a cut-off wall.

The required watertightness of sheet pile cut-offs is often achieved through the natural deposition of soil in the interlocks or with an additional sealing system.


Dykes 

For stability, sheet pile walls can be designed to mechanically reinforce the bank. Their flexibility is highly useful, as they accommodate potential soil displacement while maintaining full resistance.

Lastly, sheet pile walls can also protect buildings from subsidence. In this case, the sheet pile wall is driven outside the embankment, usually along the toe of the embankment.

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Seismic areas

In seismic areas, emerging performance-based design methodologies reveal the true potential of steel sheet piling solutions to withstand earthquakes. ArcelorMittal's engineering teams help design safe steel sheet piling structures by simulating the effects of earthquakes and fire.

ArcelorMittal, together with SENER, an international maritime engineering group based in Spain, conducted research to highlight the main features of advanced design for SSP walls in high seismic areas. This study used the dynamic approach of the Finite Element Method (FEM). The seismic design considered various cases, such as different seismic actions with a PGA ranging from 0.10 g to 0.50 g, seabed levels from -7.5 m to -13.5 m, and different soil types (sandy and silty clayey). In addition, each case took into account seismic wave propagation, the influence of hydrodynamic pressure, and excess pore water pressure.

Seismic design