Barcelona engineering workshop

Bridge at Pk44+000 of the San José – Caldera highway, Costa Rica

Exceptional Infrastructure Achievement: The 145m Bow-String Bridge on San José – Caldera Highway – Conquering Geotechnical Challenges with Precision Engineering.

BEWS carried out the detailed development of the variant presented by COPISA for the bridge at Pk44+000 of the San José – Caldera highway to bridge an area with complicated geotechnical characteristics with large landslides.

The alternative presented by Copisa and contracted by Globalvía consists of a 145 meter span bridge with a bow-string typology with a lower deck with a strong longitudinal slope. The deck is 12.50m wide, housing 3 circulation lanes with two side shoulders.

The bridge consists of two parallel arches separated by 14.30 m, formed by box beams with a square section. The arches have a central height of 22.50 meters and are laterally braced by a K-bracing system formed by circular tubes.

Below, the brace is made up of 2 double-T longitudinal brace beams. Between both longitudinal beams, transverse beams are arranged every 2.50m, with a (200+50)mm thick concrete slab, arranged on a corrugated sheet. The longitudinal braces hang from the arch through a system of inclined tubes-hangers (formed by circular tubes) that also provide rigidity to the assembly against non-symmetrical actions.

Longitudinally, the seismic conception of the bridge is based on seismic isolation, achieved with HDR type strapped neoprene supports with high damping. Transversely, a stopper is arranged so as not to require a road joint with displacement characteristics in two directions.

Client

COPISA
https://www.grupocopisa.com/

Services provided
Technical description
  • Location: Pk44+000 of the San José – Caldera highway.
  • Variant developed by BEWS for COPISA.
  • Bridge type: Bow-string with a 145-meter span.
  • Lower deck with a strong longitudinal slope.
  • Deck width: 12.50 meters.
  • Three circulation lanes and two side shoulders.
  • Two parallel arches separated by 14.30 meters.
  • Square section box beams forming the arches.
  • Arches with a central height of 22.50 meters.
  • Lateral bracing by a K-bracing system with circular tubes.
  • Double-T longitudinal brace beams below the arches.
  • Transverse beams every 2.50 meters with a concrete slab.
  • Seismic isolation using HDR type strapped neoprene supports.
  • Stopper for transverse displacement control.
  • Innovative engineering to conquer challenging geotechnical conditions.

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Velit sociosqu purus enim pharetra sed sem at iaculis. Felis ridiculus adipiscing dignissim eros pellentesque mus vitae litora. Felis nullam tortor phasellus viverra ut arcu. Euismod magnis ante convallis vulputate odio augue sit pretium dapibus.

Velit sociosqu purus enim pharetra sed sem at iaculis. Felis ridiculus adipiscing dignissim eros pellentesque mus vitae litora. Felis nullam tortor phasellus viverra ut arcu. Euismod magnis ante convallis vulputate odio augue sit pretium dapibus.

Velit sociosqu purus enim pharetra sed sem at iaculis. Felis ridiculus adipiscing dignissim eros pellentesque mus vitae litora. Felis nullam tortor phasellus viverra ut arcu. Euismod magnis ante convallis vulputate odio augue sit pretium dapibus.

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