Cold-formed thin-walled steel-concrete combined bridge deck continuous device and construction method

Abstract

The invention discloses a cold-formed thin-walled steel-concrete combined bridge floor continuous device applied to a reinforced concrete simply supported beam bridge. The cold-formed thin-walled steel-concrete combined bridge floor continuous device comprises a prefabricated steel standard section that is formed by connecting C-shaped cold-formed thin-walled section steel and a steel plate through self-tapping and self-drilling screws; the steel standard section is supported on a cement mortar leveling layer and an asphalt felt on the surface of a beam plate, self-tapping and self-drilling screws are arranged on the two sides of the steel standard section and connected with a stainless steel U-shaped drainage groove, a waterproof sealant is arranged in the U-shaped drainage groove in an embedded mode, and a steel plate on one side extends to a bridge floor. Concrete cracking can be effectively prevented, seeping water is drained to the two sides of a bridge, concrete erosion is prevented, assembling and splicing are convenient on a construction site, welding is not needed, the construction speed is high, and the cost is low.

Description

technical field [0001] The invention relates to the field of continuous bridge decks, in particular to a bridge deck continuous device and a bridge deck continuous method of simply supported girder bridges. Background technique [0002] Bridges are buildings built by humans to overcome natural obstacles in their life and production activities. Most bridges need to set expansion joints between the beam ends of two adjacent spans, between the beam ends and the abutment, at both ends of the hanging beams, and at the hinges of the bridge, so as to adapt to the expansion of the beam structure under the action of temperature stress. The rotational and longitudinal displacements of the beam ends are caused by shrinkage deformation and vehicle loads. For multi-span simply supported hollow slab girder bridges, in order to reduce the number of bridge deck expansion joints, improve the ride comfort and the service life of the bridge, the design method of "continuous bridge deck" is of...

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Problems solved by technology

[0003] Since the 1970s, my country began to use the continuous bridge deck construction method, and it has been widely used on highways and municipal bridges, and the continuous bridge deck device is mainly based on tie rods (see figure 1 ), but due to problems such as poor construction and poor durability of unbonded materials, the continuous use effect of the tie-rod bridge deck is poor, and the tension transmitted to the continuous concrete of the bridge deck cannot be resisted by the continuous steel bars of the bridge deck and the bridge pavement steel mesh , Concrete cracking is prone to occur at the continuous part of the bridge deck, causing rainwater to infiltrate and erode the lower structure of the bridge, which seriously affects the durability and ride comfort of the bridge. In addition, the existing bridge deck continuous device has a complex structure and is inconvenient to assemble

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