Main construction contents

Bridge

Planned and large-scale repair of bridge superstructures (floors, girders) against changes caused by aging, salt damage caused by anti-freezing agents and incoming salt, and fatigue caused by heavy traffic By doing so, the progress of deformation and the occurrence of new deformation are suppressed.

Floor slab replacement

Replace reinforced concrete floor slabs that have undergone cracking or peeling with more durable prestressed concrete slabs. In order to reduce the impact on traffic due to construction work, we will replace each side due to face-to-face traffic regulation without blocking.

  • Exfoliation of concrete, corrosion of rebar, exposure
  • Sedimentation of concrete on the floor slab
  • Image of floor slab replacement work

Floor slab repair construction

The reinforced concrete floor slab is thickened to improve its strength, and in order to prevent the deterioration from progressing, a high-performance floor slab waterproofing is applied to the waterproof layer.

Girder reinforcement

With regard to fatigue cracks in steel bridges, reinforcement members are used to reduce and reduce stress concentration due to vehicle running.

Tunnels / earth structures

In order to ensure long-term stability of the entire slope or tunnel in the event of deformation caused by the design / construction of the old standard or the deterioration of the ground material, carry out planned and large-scale repairs By doing so, the progress of deformation and the occurrence of new deformation are suppressed.

Installation of invert (lining part finished in reverse arch on the bottom of the tunnel)

With respect to the increase in earth pressure around the tunnel, installing an invert creates a closed structure and improves stability.

Ground anchor

By replacing the old type anchor, which has a low anticorrosion function, with a new type anchor, long-term stability of the cut slope is secured.

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