Integrated assembly type hollow slab bridge and construction method thereof

Abstract

The invention belongs to the technical filed of construction of hollow slab bridges and particularly discloses an integrated assembly type hollow slab bridge and a construction method thereof. The integrated assembly type hollow slab bridge comprises two hollow slab edge plates which are oppositely arranged; hollow slab middle plates are laid between the two hollow slab edge plates continuously; tongue-and-groove seam concrete is arranged between the adjacent hollow slabs; a plurality of shear resistant blocks are arranged on the bilateral sides of the tongue-and-groove seam concrete along the slab height; the shear resistant blocks which are longitudinally continuous are groove-shaped or protruding-edge-shaped; the groove-shaped shear resistant blocks and the protruding-edge-shaped shear resistant blocks are alternately arranged when the number of the shear resistant blocks is more than two. The construction method comprises determining the number and the shape of the tongue-and-groove seam shear resistant blocks according to the design requirements; forming the grooves or the protruding edges which are longitudinally continuous on the inner sides of formworks which are arranged at the positions of tongue-and-groove seams along the slab height correspondingly; precasting the hollow slabs, hoisting the hollow slabs and performing cast-in-site construction on the tongue-and-groove seam concrete. According to the integrated assembly type hollow slab bridge and the construction method thereof, the practicability is strong, the construction is convenient, the shear resistance between the hollow slabs can be improved, and the integral mechanical performance of the hollow slab bridge can be improved.

Description

technical field [0001] The invention belongs to the technical field of hollow slab bridge construction, and in particular relates to an assembled integral hollow slab bridge and a construction method thereof. Background technique [0002] At present, medium and small-span highway bridges with single-span spans ranging from 5m to 30m usually adopt the structural form of reinforced concrete or prestressed concrete prefabricated hollow slab bridges. The hollow slab is prefabricated in the prefabrication factory or the beam factory, and the bridge site is erected on site. The cross section of the hollow slab is usually in the form of a single hole or double hole. It is in the shape of a broken line, and the grooved seam reinforcement is reserved. The construction method is to hoist the prefabricated hollow slabs in place first, then pour concrete at the position of the grooved joints between adjacent hollow slabs, and connect the hollow slabs horizontally along the bridge to fo...

AI Technical Summary

Problems solved by technology

Since the adjacent hollow slabs are connected only by rebar and concrete, the ability to transmit shear force is limited, and the transverse integrity along the bridge is poor. The bridge deck is prone to cracks along the longitudinal direction of the bridge at the position of the rebate, resulting in bumpy driving. Affect the normal use and durability of the bridge. In severe cases, the veneer will be stressed, burying serious hidden dangers to the safety of bridge traffic and structural durability

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