Pre-stressing reinforced and widened bridge structure
A bridge structure and prestressing technology, applied in bridges, bridge materials, bridge maintenance, etc., can solve problems such as shortening the service life of old and new structures, increasing the burden on old bridges, and uncoordinated stress and deformation of old and new structures, so as to achieve the goal of structure and its construction. Simple, avoiding adverse social impact, and inhibiting the occurrence and development of old bridge diseases
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[0020] figure 1 It is a schematic diagram of the structure of the present invention, as shown in the figure: the prestressed reinforced and widened bridge structure of this embodiment includes the old bridge 1 and the widening that is parallel and located on both sides of the old bridge 1 and rigidly connected to the old bridge 1 along the lateral direction. Beam I2 and widening beam II3, the lower part of the old bridge 1 is provided with a steering device 10, between the widening beam I2 and the widening beam II3, prestressing is applied through the prestressed cable or prestressing bar 6 that crosses the bottom of the old bridge transversely. Both ends of the cable or prestressed tendon 6 extend laterally outward and diagonally upward through the cross-sectional centroids of the widened beam I2 and the widened beam II3 and are anchored to the top of the beam. The prestressed cable or prestressed tendon 6 acts through the steering device 10 In the old bridge 1; the steering d...
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