Pretensioning method for converting old simply supported beam bridge into continuous bridge
A technology for simply supported girder bridges and support girder bridges, which can be used in bridges, bridge materials, bridge maintenance, etc., and can solve problems such as many expansion joints and frequent driving bumps.
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[0028] A pretensioning method for converting old simply supported girder bridges into continuous girder bridges:
[0029] a. Embed vertically placed horizontal first steel plate 1 on one side of the end that needs to be connected in the longitudinal direction of old simply supported T-beam 14, and embed vertically placed horizontally second steel plate 2 on the other side, and lay connection pre-installation on the steel plate. The position of the stress tendons 3 is drilled in advance, and the size of the holes can pass through the prestress tendons 3,
[0030] B. in the hole 4a of the first steel plate, penetrate the prestressed tendon 3a, also penetrate the prestressed tendon 3b in the hole 4b of the second steel plate, will be positioned at the prestressed tendon outside the area between the first steel plate and the second steel plate One end of the tendon is anchored with a heading anchor 5, and the other end of the prestressed tendon passing through the first steel plat...
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