Steel box girder bridge deck concrete pavement overlapping structure and technology thereof

Abstract

The invention relates to a steel box girder bridge deck concrete pavement overlapping structure and a technology thereof.The structure comprises an upper steel box girder and a lower column type pier, the steel box girder comprises webs, a top plate and a bottom plate, vent holes are formed between the webs, and drainage holes are formed in the bottom plate in the plate length direction of the bottom plate; inner waterproof concrete, an inner waterproof bonding layer, outer waterproof concrete, an outer waterproof bonding layer and asphalt concrete are sequentially arranged on the top plate from inside to outside. The construction process is further simplified, the project amount cost of one-time cast-in-place is greatly reduced, and the fatigue resistance, stability and waterproofness of the bridge floor are remarkably improved.

Description

Technical field [0001] The invention belongs to the technical field of bridge construction, and in particular relates to a steel box girder bridge deck concrete paving superposition structure and a process thereof. technical background [0002] Steel box girder bridge deck has many advantages, such as light weight, large span capacity, simple construction and remarkable economy. It is especially suitable for long-span bridges and has been widely used at present. Among them, (steel box girder) deck pavement is an important part of steel box girder bridge system, which plays an extremely important role in bridge durability, ensuring driving safety, comfort, economic and social benefits. [0003] Paving is a new application technology of bridge construction, which is the Chinese patent "Construction Method of Steel-concrete Composite Beam Bridge" (application number: 201810200693.7; The application date: March 12, 2018) discloses the application of a hybrid composite beam, forming a...

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Problems solved by technology

[0003] Pavement lamination is a new application process of bridge construction. The Chinese patent "Construction Method of Hybrid Beam Bridge with Steel Concrete Lamination" (application number: 201810200693.7; application date: 2018.03.12) discloses a hybrid composite beam application, forming a steel-concrete hybrid girder bridge with light structure weight and increased spanning capacity. The scheme adopted is a segmented structure, which avoids the investment of large floating cranes and construction risks. The plan of re-push the beam section, in fact, the application of this plan does not reduce the process cost investment much, but also needs to be reassembled and poured between segments, that is, the process is simplified, but the engineering volume is still large and needs to be improved

Moreover, the existing pavement surface layer needs to be improved in terms of fatigue resistance, stability and water resistance.

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