Freyssinet Chile

Freyssinet has extensive experience in the field of seismic devices, from the design of the seismic protection strategy for specific structures to the supply and installation of systems designed, manufactured and tested by the group. This capability builds on its extensive track record and provides structural designers and clients with practical solutions to minimise seismic risks. Freyssinet Chile has several success stories of supplying complete seismic isolation projects.

Freyssinet offers a wide range of reliable, diverse joints, complemented by a unique design service.

You can count on Freyssinet for: – Design of roadway joints – Advice to the design office – Manufacture of roadway joints – Installation of joints by our specialised teams.

Tens of thousands of metres of Freyssinet joints are installed every year in more than 80 countries, including Chile, with a superb guarantee of durability and functions adapted to all climates and traffic conditions. Freyssinet road joints are certified and recognised by numerous organisations, including the Chilean Ministry of Public Works (MOP).

Freyssinet invented prestressing, which revolutionised civil engineering. Our C range offers a solution that combines performance and durability for all types of structures.

In 1989, Freyssinet invented the first individually protected multi-strand stay cable, the basis of Freyssinet technology for cable-stayed structures such as bridges. Freyssinet is a global leader in this type of structure.

Freyssinet specialises in repairing structures with carbon fibre, with the aim of re-establishing the initial strength of the structural elements, or even increasing their strength. It is very useful to use these repairs when the structure has been damaged by excessive overloads or accidents resulting from use.

They can be used to repair superficially damaged elements of any reinforced or prestressed concrete structure to restore its mechanical strength and original appearance.

Thanks to its long experience in the supply of stay cables for a wide range of new structures, Freyssinet has developed a complete range of technical solutions and services for the maintenance and repair of all types of stay cables and suspension cable systems.

We carry out specialised maintenance work to extend the service life of prestressed tendons, as well as emergency repairs to ensure the safety of structures after a cable has broken, or when the remaining load capacity is uncertain.

Tie rods, instrumentation, monitoring and geometric controlTemuco, CHILE

The Treng Treng Kay Kay Bridge is located in the town of Temuco, in the Araucanía region of Chile. Its construction was completed at the end of March 2021. It is an asymmetrical cable-stayed bridge with a single mast, a total length of 240 metres and a main span of 140 m over the Cautín River. The deck, consisting of a 27-metre wide bi-cellular box girder, is made of prestressed concrete, as is the mast composed of two shafts that meet at a height of 55 m above the ground and culminate at a height of 75 m. The guying system consists of 24 front stays and 8 restraint stays. The type H2000 stays consist of a bundle of 31 to 75 strands in the central span and 127 strands for the restraint stays. With a resistance of 1860 MPa, the strands have a triple protection (single sheath, galvanised and mineral wax). In the free length, the stay beams are contained in a red sheath.

WORK CARRIED OUT BY FREYSSINET

Freyssinet’s work on the construction of the Treng Treng Kay Kay Bridge was varied:

• Supply and installation of the deck and mast prestressing tendons with units of 9 to 24 strands.
• Supply and installation of the stay cables.
• Supply, installation and follow-up of the monitoring system both during construction and in service of the bridge. The main parameters monitored were the geometry of the structure and the loads on the stay cables, both in real time.
• Carrying out of the load test of the structure.

Post-tensioningSantiago, CHILE

This concessioned motorway includes, among other works, the Avenida El Salto – Príncipe de Gales section, which is a work that joins the Américo Vespucio ring road to motorway standards. The section between El Salto and Príncipe de Gales (AVO I) is 9 km long and runs through various districts of the metropolitan region. Two construction processes are distinguished within the project: covered trench, where the upper and intermediate slabs are post-tensioned, and a hybrid tunnel – trench solution in which the intermediate slabs are post-tensioned, equivalent to a total of 2,308 tonnes of active steel using different types of anchors and considering more than 13,000 anchors. The work includes a total of 92 top slabs, 189 intermediate slabs, 19 beams and a gantry, as well as the supply of Freyssibar type high-strength steel bars.

WORK CARRIED OUT BY FREYSSINET

Freyssinet’s work on the construction of the AVO I motorway included:

• Supply and transport to site of materials and post-tensioning equipment.
• Profiling, post-tensioning and grouting, including end cutting.
• Supply of Freyssibar type high-strength steel bars.

RepairsSantiago, CHILE

The Pudahuel South Bridge consists of 3 steel girders, a 9m wide deck and a total length of 75m, with 4 spans of variable length. Given the verifications of the permissible stresses of the different sections for the spans, the slab in the previous situation did not have the transversal reinforcement necessary to comply with the current regulations, and it was therefore recommended that the areas studied be reinforced.

The client asked Freyssinet to repair the Pudahuel Sur Bridge by reinforcing the structure, located on Route 68, in the municipality of Pudahuel, Santiago, metropolitan region.

Freyssinet carried out the assembly of 33 tons of scaffolding, 220 ml of welding, 1000m2 of painting, supply and installation of carbon fibre fabric reinforcement equal to 200m2, carbon fibre reinforcement with carbon fibre bars in 188 sections of 2ml. In addition to the aforementioned materials, the replacement of expansion joints and the installation of flat bars on the existing beams are also considered.

WORK CARRIED OUT BY FREYSSINET

Freyssinet’s works in the repair of this bridge were:

• Crack injection.
• Concrete repair.
• Installation of deck plates and painting of beams.
• Installation of bars and carbon fibre fabric.
• Removal and installation of roadway joints.

Seismic IsolationSantiago, CHILE

The PDI building is located in the ENEA industrial park sector, Santiago, in the metropolitan region, and corresponds to a complex of four blocks divided into a main building with seven floors and one underground; block A with three floors and two underground; block B with three floors and two underground and block C with a shooting range with one underground.

The manufacture and supply of 3 types of basal seismic isolators is considered, resulting in a total quantity of 40 isolators. In addition, a supply of 2 isolators as test prototypes was considered for each type of isolator, resulting in a total of 6 prototype isolators.

WORK CARRIED OUT BY FREYSSINET

Freyssinet’s works in the supply of seismic isolators were:

• Detailed engineering of devices.
• Installation, assembly and maintenance manual for the devices.
• Manufacture of prototypes.
• Testing of prototypes.
• Delivery of reports.
• Supply of devices, anchor bolts, among others, on site.
• Technical assistance.

Structural inspection anddiagnosisChaitén Providencia de Palena, X region, CHILE

The Yelcho Bridge is located in the Los Lagos Region, Palena Province, approximately 47 km south of Chaitén. It allows the continuity of the CH-7 route (Carretera Austral). It is a cable-stayed bridge made up of tensioned steel bars, which are anchored to both the deck and the towers, which are 34 m high (total height of 42 m). The total length of the bridge is 250 m and the bridge deck is 6.70 m wide. The deck is made of reinforced concrete with lateral ribs of 0.65 m edge.

WORK CARRIED OUT BY FREYSSINET

Freyssinet’s work in the inspection and diagnosis of this bridge included:

• Evaluation of the current state of the structural elements belonging to the superstructure and infrastructure, which include: support apparatus, stay cables and their mechanical connections, anchors, anchor bars (restraints), deck connections, top of piers, among other main elements.
• Measurement of the strength of the stay cables by the vibrating rope method.
• Evaluation of possible repairs to the bridge.