9 results about "Bridge deck" patented technology

The invention discloses a fully-assembled prefabricated concrete girder bridge superstructure and further provides a construction method of the fully-assembled prefabricated concrete girder bridge superstructure. The fully-assembled prefabricated concrete girder bridge superstructure comprises prefabricated concrete box girder single bodies, prefabricated concrete guardrails and a bridge deck paving layer. The prefabricated concrete box girder single bodies comprise prefabricated concrete box girder bodies; flange plates are arranged on the two sides of top plates of the prefabricated concretebox girder bodies; transverse splicing rigid prefabricated pieces are pre-embedded in the flange plates; the prefabricated concrete box girder single bodies further comprise transverse partition plates, and transverse partition plate splicing rigid prefabricated pieces are pre-embedded in the transverse partition plates; longitudinal splicing rigid prefabricated pieces are pre-embedded in the twoends of the prefabricated concrete box girder bodies; the adjacent prefabricated concrete box girder single bodies are transversely and longitudinally spliced; and the prefabricated concrete guardrails are connected with the prefabricated concrete box girder single bodies, and guardrail locking nuts are assembled on guardrail connecting bolts. Through the structure, cast-in-place concrete and negative moment prestressed ribs of the prefabricated concrete girder bridge superstructure in the connecting construction process can be omitted, and all components of the superstructure are fully assembled.

The invention discloses a structure of sticking a fiber reinforce plastic (FRP) fiber material on the surface of concrete, which is characterized by mainly comprising a concrete structure layer, and a primer layer, a leveling layer, an impregnated adhesive layer and an FRP fiber material layer which are stacked on the surface of the concrete structure layer in turn. The invention also discloses a method for implementing the structure of sticking the fiber reinforce plastic (FRP) fiber material on the surface of the concrete, which is characterized by mainly comprising the following steps of: pretreating the loose and weak surface of the concrete structure layer until the surface of the concrete structure layer forms a hard interface; uniformly coating a primer on the formed hard surface of the concrete structure layer, and the like. The invention can obviously improve the rigidity and hardness of reinforced concrete members; meanwhile, the FRP fiber material is embedded in a concrete cover, so the FRP fiber material can be protected, the accident load action such as wear and impact is avoided and the invention is suitable for reinforcing bridge decks and continuous beam hogging moment areas.

The invention relates to a pedestrian overpass for municipal engineering, and belongs to the technical field of municipal engineering facilities, the pedestrian overpass comprises an overpass body, a plurality of drying mechanisms are arranged in the deck of the overpass body, and each drying mechanism comprises a bearing plate slidably connected to the interior of the overpass body through a sliding assembly; a drying cavity matched with the bearing plate is formed in one side of the bridge surface of the overbridge body, a drying pipe is arranged on the bearing plate through a plurality of bearing assemblies, and a drying assembly matched with the drying pipe is arranged on one side of the bridge surface of the overbridge body. According to the pedestrian overpass, the interior of the platform bridge body can be conveniently and effectively heated, so that a wet bridge surface can be conveniently and effectively dried, the situation that pedestrians slip when walking on the bridge surface of the platform bridge body can be reduced, and the walking safety of the pedestrians is improved.

The invention provides a wooden bridge and an installation process thereof, and belongs to the technical field of viaducts. The wooden bridge comprises: a plurality of bridge column bearing platforms; multiple bridge column assemblies which are arranged on the upper sides of the multiple bridge column bearing platforms correspondingly, wherein the multiple bridge column assemblies and the bridge column bearing platforms are in one-to-one symmetry; multiple sets of bridge column wrapping decoration assemblies which are arranged on the front sides and the rear sides of the multiple sets of bridge column assemblies correspondingly, wherein protection on the front sides and the rear sides of the bridge column assemblies is achieved; longitudinal beam assemblies which are arranged on the upper sides of the two longitudinal bridge column assemblies respectively; a plurality of groups of cross beam assemblies which are respectively arranged between the two groups of longitudinal beam assemblies; and multiple groups of bridge floor assemblies which are arranged on the upper sides of the multiple groups of cross beam assemblies. According to the device, the wooden bridge can be installed through the rubber hammers and the screws, so that the wooden bridge can be installed more simply and safely, and students can use the device to install the viaduct in a short time.

The invention belongs to the technical field of bridge deck pavement, and particularly relates to a gradient functional bridge deck pavement material and a preparation method thereof. The gradient functional bridge deck pavement material is prepared from the following components in parts by weight: 10 to 25 parts of pouring type asphalt cement, 75 to 90 parts of mineral aggregate, 1 to 2 parts ofsteel fiber and 0.4 to 1 part of additive, wherein the mineral aggregate comprises light aggregate, common aggregate and mineral powder, and the light aggregate accounts for 1-99% of the total mass ofthe mineral aggregate. The density difference between the light aggregate and the common aggregate and the cementing material is utilized, the paving top surface is enriched with the light aggregate,the effect of enhancing the interlayer shear resistance is achieved, the bottom surface is enriched with the common aggregate and the cementing material, and the deformation compliance is fully exerted. Meanwhile, the weight of the bridge deck pavement can be reduced by 10-60% under the condition that the thickness is not changed, or the pavement thickness can be increased by 1-3 cm under the condition that the dead load is not changed. Furthermore, the purposes of saving high-quality aggregate and protecting the environment can be achieved.

The invention discloses a novel fabricated steel-concrete combined steel plate beam which at least comprises a pi-shaped beam composed of two I-shaped beams and a panel, the end of the pi-shaped beam is wrapped with a cross beam, a support is arranged at the bottom end of the pi-shaped beam, and structural stress ribs are respectively arranged in a panel wet joint and a cross beam wet joint formed between the pi-shaped beams. The simply-supported structure system of the pi-shaped beam is adopted, construction at the pier top is simplified, the problem that a bridge deck slab at the pier top is pulled to crack is solved, and the structural durability is improved; the two I-shaped beams and the panel are designed to be pi-shaped beams, and the two supports are arranged so that the stability problem in the mounting process is solved; transverse stiffeners in the midspan steel cross beam and the steel beam web in the prior art are abandoned, the structure is greatly simplified, the landscape effect is good, maintenance is easy, and the workload is small.