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- W581779459 abstract "Puttesund Bridge, located about 100 km south of Oslo, Norway was completed in 1970 and built by the cantilever construction method. It is a prestressed single span box girder bridge with a hinge in the centre. Over the years the main span has deflected about 450 mm at the hinge. Also, the bridge was found to have insufficient shear capacity, which is the cause for the strengthening. The bending capacity, however, was found to be adequate. It is reason to believe that the sag is caused by a number of factors but not necessarily in connection to any weakness of the bridge. The extension system consists of two pairs of stay cables for each cantilever connected to inverted Y-shaped steel towers at the existing supports. By applying 3.15 MN tensioning force in each pair of stay cables, about 300 mm of the sag has so far been eliminated and the analyses show that the shear-relieved girder now meets full traffic load requirements. The state of the structure has been analysed based on advanced nonlinear finite element technique. Also measurements of concrete stresses have been carried out using the so-called stress-relief coring technique. Measured stresses compare quite well with corresponding stresses from analysis. For the covering abstract see ITRD E122906." @default.
- W581779459 created "2016-06-24" @default.
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- W581779459 date "2003-01-01" @default.
- W581779459 modified "2023-09-24" @default.
- W581779459 title "STRENGTHENING OF PUTTESUND BRIDGE" @default.
- W581779459 hasPublicationYear "2003" @default.
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