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| CREDIT : NHAI, Mort&H (Bihar-Region) |
An Extradosed Bridge is a hybrid concept in the region of transition between girder bridges and cable-stayed bridges.
The Extradosed girder behaves like a prestressed concrete box girder although it has similarity in look with cables stayed bridges. Extradosed Bridge provide less vertical stiffness to the deck compared with a cable-stayed bridge. The shallowness of the extradosed cables directly carry only a small portion of the moving load also Extradosed bridges are generally constructed using segment technology, where some of the segments are supported by stay cables which are anchored to the short pylon.
India has The large number of Extradosed Bridges built over the last two decades so Indian Road Congress (IRC) has prepare separate documents for such bridges.
The IRC Committee takes the responsibility of preparing the document for Extradosed Bridges. This document for [IRC SP 137-2023] Extradosed Bridges was taken up to cover Analysis, design, Construction, Testing, Monitoring and Maintenance aspects of Extradosed bridges etc. was undertaken by Committee of IRC.
Click Below to Download IRC SP 137-2023.
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