Segmental Bridges & Viaducts

TENSA can provide several kinds of post-tensioning, internal and external, to match all needs related to segmental bridges erection and construction, where post-tensioning plays a key role. A broad application of these systems has been performed through s

Advantages

TENSA provides solutions for highly efficient structural reinforcement of segmental bridges and viaducts:

- Internal and external tendons can be used in concrete and composite structures;

- seismic isolators, bearings and other devices are able to isolate and reduce seismic movements, allowing the deck to transfer vertical and horizontal loads

At this location, bearings, shock transmitter devices and steel restraints can be installed.
Sometimes the design prescribes the use of post tensioning along the trunk of the column to give compression and reduce instability.

    Bearings

    Structures undergo displacements, rotations and deformations caused by acting loads (of static, dynamic, thermic nature etc.) or by phenomena such as shrinkage and creep, linked to the maturation of materials.
    Movements, rotations and deformations need to be allowed for and contemplated where strictly necessary and in accordance with the designer’s constraining system.

    TENSA can supply:

    1. Fixed bearings, which allow rotation between two structural elements and transfer the vertical and horizontal loads
    2. Guided sliding bearings, which transfer vertical loads, allow rotation between two structural elements, displacement in one single direction and transfer lateral load in the fixed one
    3. Free sliding bearings, which transfer vertical loads, allow rotation between two structural elements and displacements in all plan directions

    Spans are made of precast segments lifted and launched by special equipment.

    Post Tensioning

    Post tensioning is a highly efficient structural reinforcement system that offers many benefits, such as economic savings and lasting structures.

    TENSA develops a range of solutions to protect anchor plates and tendons from atmospherical agents.

    Expansion Joints

    Expansion joints are devices designed to absorb the movements of the structure due to temperature variations, creep, shrinkage, seismic actions, wind and else.

    Expansion joints are designed to allow continuous traffic between the decks and among deck and abutments offering a safe and comfortable passage.

    Related products 

    TENSA offers a complete range of bearings. Almost 30 years of worldwide experience in the field allows TENSA to provide the most appropriate solution to meet all clients' needs. The internal production facility and laboratory allow to keep full control of quality and of delivery times.

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    Thanks to its experienced team of engineers and technicians, TENSA is able to guarantee the highest and worldwide accepted quality standards to every step of the post tensioning process, from the design, to production and on-site installation.

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    TENSA designs and provides different types of expansion joints, which can be used in any structure. TENSA's joints are capable to absorb the structure movements caused by temperature variations, creep, shrinkage, seismic actions, from the smallest to the largest.

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    Base isolation systems are used to protect constructions and, more importantly, human lives.  25 years’ experience allows TENSA to provide a solution to any design demand, producing innovative tools aimed at reducing the seismic hazard.

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    TENSA designs, produces, tests and delivers its velocity dependent devices according to specific clients’ needs. These solutions are designed to reduce the seismic structural response by adding important energy dissipation to the system.

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    TENSA’s rigid connection devices are the most suitable solution when a modification on the structure’s response is required. In fact, they can modify the structure’s condition from static to dynamic and distribute the entrance seismic force in different positions.

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    Thanks to its high quality displacement dependent devices TENSA is able to guarantee a perfect control of maximum loads activated during an earthquake between the connected elements, independently of the seismic intensity and frequency.

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    Related projects

    Country 
    Algeria
    Year 
    2017 / ongoing
    Country 
    Australia
    Year 
    2017
    Country 
    USA
    Year 
    2015
    Country 
    Italy
    Year 
    2015
    Country 
    Kuwait
    Year 
    2012