External Prestressed Stayed Cable System

External prestressing is one of the important branches of post tensioned prestressing systems.

Compared with internal prestressing structures, its prestressing tendons are located outside the main section of the load-bearing structure,

and the prestressing is transmitted through anchoring zones and turning blocks directly or indirectly connected to the main section of the structure.

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ADVANTAGES

The advantages of the external prestressed structural system are:

It can control and adjust the stress of the prestressed tendons, facilitate detection, maintenance, and can replace the prestressed tendons if necessary;
The arrangement of external prestressed tendons is simple, easy to adjust, and the construction process is simple, greatly reducing the construction time;
The prestressed tendon is only connected to the component outside the anchorage zone and turning block, reducing the loss of prestress caused by pipeline friction;
Placing prestressed tendons outside the main section of the structure not only makes pouring easier, but also reduces the cross-sectional size of concrete components, reduces the weight of the structure, and lowers costs;
Due to the prefabrication of box girder structures, the construction speed and efficiency of bridges have been greatly improved.

USE

Application：

The application of external prestressed structural system is very extensive, which can be used for new structures such as prestressed concrete bridges, special structures, and building engineering structures, as well as for the reconstruction, reinforcement, and maintenance of existing concrete structures.

It can also be used for temporary prestressed concrete structures or construction of temporary steel cables.

SPECIFICATIONS

Characteristics:

The external prestressing system adopts non bonded steel strands and an anti-corrosion structure in the anchorage zone, which is safe and reliable, with good anti-corrosion and anti fatigue performance. Special devices are designed in the system to effectively reduce the harm caused by cable vibration.
The construction of the external prestressing system is simple, easy to detect and maintain, and the cables can be replaced if necessary.
The steering device has a reasonable structural setting, which can evenly transmit loads and achieve cable adjustment and replacement functions.

PACKAGE

We support customized package:

1) All the products are packed with seaworthy packing.
2) Customer's special requirement for packing can be satisfied.
3) Air freight; sea freight and truck freight are all available.