Method for reinforcing the transverse overall performance of prefabricated hollow slab girder
A hollow slab girder and integral technology, applied to bridges, bridge parts, bridge materials, etc., can solve problems such as hinge cracking, achieve the effects of prolonging service life, increasing beam cross-section, and strengthening overall stability
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[0014] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0015] A method of strengthening the transverse overall performance of prefabricated hollow slab girders, such as figure 1 As shown, the bridge deck pavement 4 of the existing hollow slab girder 5, the ordinary cast-in-place concrete layer, and the carbonized concrete layer 7 at the bottom are first chiseled out, and then the hinge joints on the existing hollow slab girder 5 are vertically spaced at certain distances. Drill out the mounting holes for the vertical prestressing system 3, avoid the slab girder reinforcement when processing the mounting holes, and then bind the upper and lower ultra-high performance reinforced concrete cast-in-place slabs (1 and 2) steel bars, pre-embed the lower end anchors and steel bars of the vertical prestressing system 3, and then pour the upper and lower ultra-high performance reinforced concrete cast-in-situ slabs (...
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