Innovative Construction Technique for Extensions to Existing Reinforced Earth Retaining Walls.

Menard - Dynamic Compaction

Road Duplication/Extension projects allow for an increase in traffic capacity for an existing road once it reaches its design limits. As a consequence, several bridge structures have to be widened or duplicated.

The duplication of an existing RE structure usually comprises of the following steps. (Figure 1)

  • Identify panels to be dismantled/demolished or replaced later on.
  • Identify panels to remain in place. This includes panels for which original design allows for the new load requirements and panels that can’t be removed for stability reasons.
  • Provide a method to strengthen the wall area identified previously that will not be able to take the new loads.
  • Implement the new design in order to reconstruct the wall and build the duplication as per new bridge project requirements.
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