Light integrated laminated bridge deck slab

Abstract

The invention relates to a light integrated composite bridge deck slab, and belongs to the technical field of bridge engineering. The light integrated composite bridge deck slab is arranged on a plurality of bearing steel beams which are evenly arranged at intervals, and the light integrated composite bridge deck slab comprises a prefabricated thin plate, a cast-in-place plate and connecting components. The prefabricated thin plate is of a groove-shaped structure with the thin middle and the thick periphery, the middle thickness of the prefabricated thin plate is half of the thickness of the whole designed bridge deck, and therefore the hoisting weight, strength and hoisting construction difficulty of a conventional bridge deck are reduced. The prefabricated thin plate and the cast-in-place plate are bonded together through the connecting component to enhance the bonding strength of the prefabricated thin plate and the cast-in-place plate; the cast-in-place slab ensures that the whole bridge deck reaches the designed thickness and strength and ensures that the prefabricated thin plate, the cast-in-place slab and the connecting component form an integrated bridge deck. According to the bridge deck slab, the problems that a prefabricated bridge deck slab is large in construction weight, high in hoisting strength and large in construction difficulty are effectively solved, meanwhile, the construction period can be shortened, and the integrity and the bearing capacity of the whole bridge deck slab are enhanced.

Description

technical field [0001] The invention relates to the technical field of bridge engineering, in particular to a lightweight integrated laminated bridge deck. Background technique [0002] Composite beam structures are widely used in the fields of roads, bridges and construction due to their advantages of reasonable material utilization, economy, and convenient construction. Pouring concrete bridge decks on the construction site takes a long time and consumes a lot of manpower and material resources. The prefabricated assembly construction can greatly reduce the amount of on-site work and speed up the construction, and the prefabricated bridge deck is usually stored for more than three months before installation, which reduces the adverse effects of shrinkage and creep of the concrete slab on the steel girder. After the bridge deck is prefabricated and installed, only a small amount of joints and holes reserved for shear grooves need to be poured, so that the steel beam and th...

AI Technical Summary

Problems solved by technology

However, the support construction increases the complexity of the composite beam bridge formwork construction

[0004] When the prefabricated bridge deck passes through the steel girder continuously, this structure is often adopted. If group welding is used in the shear groove reserved for the prefabricated bridge deck, the welded nail connectors are arranged in groups with a small spacing, and the welding nails are arranged in groups with a large spacing. The welding stud group is arranged along the longitudinal direction of the bridge, and the arrangement of welding studs with too small spacing will produce the group nail effect. The bearing capacity of the nails has been reduced, and the average force of a single welding stud is greater than the ultimate shear bearing capacity of the welding stud calculated by the national standard. During use, the welding stud may be sheared, resulting in a decrease in the shear stiffness of the composite cross-section connector.

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