CN209873560U - Bridge deck continuous connection structure adopting ultra-high performance concrete - Google Patents
Bridge deck continuous connection structure adopting ultra-high performance concrete Download PDFInfo
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- CN209873560U CN209873560U CN201920408940.2U CN201920408940U CN209873560U CN 209873560 U CN209873560 U CN 209873560U CN 201920408940 U CN201920408940 U CN 201920408940U CN 209873560 U CN209873560 U CN 209873560U
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Abstract
The utility model relates to an adopt bridge floor continuous connection structure of ultra high performance concrete, including girder and the pier that supports the girder, right angle department knot is equipped with L type connecting steel plate on the tip of girder, and two L type connecting steel plate tops of adjacent two girder opposite ends are mated formation and have same prefabricated ultra high performance concrete slab, ultra high performance concrete slab is in the same place with two L type connecting steel plate fixed connection that are located its below, concrete decking has been pour to the girder upside, concrete decking upper surface and ultra high performance concrete slab upper surface parallel and level. The utility model adopts the bridge deck continuous connection structure of the ultra-high performance concrete to realize the rapid construction and replacement, shorten the construction period, reduce the labor cost, and avoid the defects of long construction period, high labor cost and the like of the traditional reinforced concrete connection plate concrete cast-in-place construction; the crack is not easy to generate, the corrosion resistance is good, and the service life is long.
Description
Technical Field
The utility model relates to an adopt bridge floor continuous connection structure of ultra high performance concrete.
Background
The jumping caused by the expansion joints of the bridge and the secondary adverse effects (such as additional internal force of the structure, corrosion of the structure caused by water leakage and the like) caused by the damage of the expansion joints are troublesome problems which are often encountered in the actual operation of the bridge at home and abroad at present. The jumping caused by the telescopic device not only causes great impact on the bridge, but also reduces the driving comfort of drivers and passengers. In addition, with the increasing of the traffic flow, the maintenance and replacement of the expansion joint device often cause serious traffic interruption, and further generate huge economic loss. Therefore, a series of problems brought by the bridge expansion joint are inevitable. At present, the expansion joint solving problem generally has the following two ideas: firstly, an improved telescopic device. At present, the types of the telescopic devices are many, the service life of the telescopic devices is generally less than 5 years, but the problems of maintenance and replacement of the telescopic devices are not completely solved by improving the telescopic devices, so the improvement of the telescopic devices is not a permanent cure. And secondly, the problem of the expansion device is solved fundamentally, and the expansion device of the bridge deck is reduced or the expansion device of the bridge is eliminated. Early multi-span simply supported girder bridges provided telescoping devices on each pier. In order to improve the driving stability and comfort and reduce the noise, the bridge deck simply supports the bridge in succession. The bridge deck continuous simply-supported girder bridge is a structure which is formed into a bridge deck continuous integral structure by combining a connecting plate and a girder and ensures that the girder is simply supported. The bridge deck continuous simply-supported beam bridge has the mechanical characteristics of the simply-supported beam bridge, and is simple in structure and convenient to construct; and the expansion device is not arranged, so that the construction, maintenance and repair cost of the expansion device is saved, the driving stability is improved, and the impact load of a driving on a bridge is reduced. Because the expansion device between the adjacent main beams is cancelled, the expansion amount of the beam body generated by temperature deformation, concrete shrinkage and creep and the like is absorbed by the connecting plate.
The connecting plate in the bridge deck continuous simply-supported girder bridge is a weak link of the structure; as for the structure, because the girder is the simple beam, the connecting plate is located the beam-ends of girder, not only will bear the longitudinal axle that girder temperature breathing deformation transmitted and warp to warp, still need bear the main girder tip rotational deformation and the concentrated power and the impact of wheel that vertical load such as car produced, the atress is complicated, and design, construction and maintenance are improper, all can cause the fracture. Because the tie plate is affected by the negative bending moment, the tie plate concrete must crack when there are not enough longitudinal rebars designed to bear the upper vehicle impact load. With the increase of the service time, diseases such as fragmentation, local pit and the like can be developed, so that the smoothness of the bridge deck is damaged, the service life of the bridge deck is influenced, and the driving safety is endangered. Rainwater can infiltrate into the support, the capping beam and the like to cause the corrosion of the reinforcing steel bars inside the abutment and the freeze-thaw damage of concrete. The traditional reinforced concrete connecting plate is usually constructed by casting in place, and the construction quality is difficult to ensure. When the reinforced concrete connecting plate is cracked and damaged, the damaged concrete needs to be chiseled on site, and the reinforcing steel bars are cut off; and a template is built again, reinforcing steel bars are arranged, concrete is poured on site again, maintenance is carried out, and time and labor are wasted in the maintenance and replacement process.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a difficult fracture can realize quick construction and change, shortens construction period's the bridge floor continuous connection structure who adopts ultra high performance concrete.
The utility model discloses a following scheme realizes: the utility model provides an adopt bridge floor continuous connection structure of ultra high performance concrete, includes girder and the pier that supports the girder, the right angle department is detained and is equipped with L type connecting steel plate on the tip of girder, and two L type connecting steel plate tops of adjacent two girder opposite ends are mated formation and are had same prefabricated ultra high performance concrete slab, ultra high performance concrete slab is in the same place with two L type connecting steel plate fixed connection that are located its below, concrete decking has been pour to the girder upside, and concrete decking upper surface and ultra high performance concrete slab upper surface parallel and level.
Furthermore, a screw rod which upwards penetrates through the ultrahigh-performance concrete slab is welded on the upper side face of the transverse plate of the L-shaped connecting steel plate, and a nut used for locking the ultrahigh-performance concrete slab is screwed on the screw rod.
Furthermore, a bolt hole for the screw to penetrate upwards is formed in the ultrahigh-performance concrete slab, a counter bore is formed in the upper end of the bolt hole, and the nut is located in the counter bore.
Further, gaps in the bolt holes and gaps between the ultra-high performance concrete slabs and the concrete bridge deck slab are filled with asphalt horseshoe grease.
Furthermore, the transverse plate and the vertical plate of the L-shaped connecting steel plate are welded with reinforcing steel bars, and the reinforcing steel bars are welded with a reinforcing cage of the main beam.
Furthermore, an unbonded layer is arranged between the ultrahigh-performance concrete slab and the L-shaped connecting steel plate.
Compared with the prior art, the utility model discloses following beneficial effect has: the utility model adopts the bridge deck continuous connection structure of the ultra-high performance concrete to realize the rapid construction and replacement, shorten the construction period, reduce the labor cost, and avoid the defects of long construction period, high labor cost and the like of the traditional reinforced concrete connection plate concrete cast-in-place construction; stable structure, high strength, no crack, high anticorrosion performance and long service life.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to specific embodiments and related drawings.
Drawings
Fig. 1 is a top view of an embodiment of the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1;
FIG. 4 is a schematic diagram of the construction process step (1) according to the embodiment of the present invention;
FIG. 5 is a cross-sectional view C-C of FIG. 4;
FIG. 6 is a cross-sectional view taken along line D-D of FIG. 4;
FIG. 7 is a schematic diagram of the step (2) of the construction process of the embodiment of the present invention;
FIG. 8 is an installation diagram of the L-shaped connecting steel plate in step (3) of the construction process of the embodiment of the present invention;
FIG. 9 is a schematic diagram of the step (3) of the construction process of the embodiment of the present invention;
FIG. 10 is a schematic diagram of the construction process step (4) according to the embodiment of the present invention;
FIG. 11 is a schematic diagram of the step (5) of the construction process of the embodiment of the present invention;
FIG. 12 is a schematic diagram of the step (6) of the construction process according to the embodiment of the present invention;
FIG. 13 is a schematic diagram of the construction process step (7) according to the embodiment of the present invention;
the reference numbers in the figures illustrate: the concrete bridge comprises 1-ultrahigh-performance concrete slab, 2-bolt holes, 3-L-shaped connecting steel plates, 4-steel bars, 5-bridge piers, 6-main beams, 7-steel bar cages, 8-screws, 9-non-adhesive layers, 10-nuts, 11-concrete bridge deck plates and 12-asphalt horseshoe grease.
Detailed Description
As shown in fig. 1 ~ 13, a bridge deck continuous connection structure using ultra-high performance concrete comprises main beams 6 and piers 5 supporting the main beams 6, wherein the piers 5 support opposite ends of two adjacent main beams 6, an L-shaped connection steel plate 3 is buckled at a right angle on the end part of each main beam 6, the outer side surface of a vertical plate of each L-shaped connection steel plate 3 is flush with the end surface of each main beam 6, the upper side surface of a transverse plate of each L-shaped connection steel plate 3 is flush with the upper side surface of each main beam 6, the two L-shaped connection steel plates 3 at the opposite ends of the two adjacent main beams 6 are paved with the same prefabricated ultra-high performance concrete slab 1, the ultra-high performance concrete slab 1 is fixedly connected with the two L-shaped connection steel plates 3 positioned below the ultra-high performance concrete slab 1, a concrete bridge deck 11 is poured on the upper side of each main beam 6, the upper surface of the concrete bridge deck 11 is flush with the upper surface of the ultra-high performance concrete slab 1, the ultra-high performance concrete slab 1 is a prefabricated component, the ultra-high performance concrete slab 1 is installed on the main beams 6 to be connected with the main beams 6 into a whole, the girder can be poured and can be transported.
The tensile, bending and crack resistance of the ultra-high performance concrete are utilized to ensure that the connecting plates at the continuous structure of the bridge deck do not generate cracks under the longitudinal bridge action of temperature change, concrete shrinkage and creep and the like, the rotation deformation of the end part of the main beam generated by the vertical load of an automobile and the like and the concentrated force and impact action of wheels; the compactness and low porosity of the ultra-high performance concrete are used for preventing moisture from permeating through the connecting plate and entering the lower structure to cause the damage of the lower structure concrete and the support; the corrosion resistance of the structure is improved, the service life of the structure is prolonged, and the structure can be widely applied to the field of bridges.
In this embodiment, the upper side of the transverse plate of the L-shaped connecting steel plate 3 is welded with a screw 8 which upwardly penetrates through the ultra-high performance concrete slab 1, the screw 8 is arranged in a row, and a nut 10 for locking the ultra-high performance concrete slab 1 is screwed on the screw 8, so as to realize the connection between the ultra-high performance concrete slab 1 and the L-shaped connecting steel plate 3; according to the invention, the compression resistance and the tensile resistance of the ultra-high performance concrete are utilized to ensure that the ultra-high performance concrete slab is not damaged under the local action of the screw and the nut, and the ultra-high performance concrete slab and the L-shaped connecting steel plate with the screw are utilized to realize rapid construction and replacement, so that the defects of long construction period, high labor cost and the like of the traditional concrete cast-in-place construction of the reinforced concrete connecting plate are avoided.
In this embodiment, the ultra-high performance concrete slab 1 is provided with a bolt hole 2 through which a screw 8 passes upwards, the upper end of the bolt hole 2 is provided with a counter bore, and the nut 10 is located in the counter bore.
In the embodiment, the gaps in the bolt holes 2 and the gaps between the ultra-high performance concrete slabs 1 and the concrete bridge deck slab 11 are filled with the asphalt horseshoe grease 12, so that the phenomenon that the lower structure concrete and the support are damaged due to the fact that water permeates into the lower structure is avoided; improve the corrosion resistance and prolong the service life of the bridge.
In this embodiment, the welding of L type steel 3's horizontal board and vertical inboard side has reinforcing bar 4, reinforcing bar 4 is in the same place with the welding of the steel reinforcement cage 7 of girder 6, reinforcing bar 4 is L shape, guarantees its anchor quality.
In the present embodiment, the non-adhesive layer 9 is provided between the ultra high performance concrete panel 1 and the L-shaped connection steel plate 3.
The utility model discloses a bridge floor continuous connection structure's of ultra high performance concrete work progress:
(1) prefabricating an ultrahigh-performance concrete slab, and performing high-temperature pressurizing steam curing in the manufacturing process to ensure that the curing time is not less than 15 days so as to finish the early shrinkage and creep of the ultrahigh-performance concrete, wherein two rows of bolt holes with counter bores are pre-arranged in the prefabricating process of the ultrahigh-performance concrete slab, as shown in figures 4, 5 and 6;
(2) the L-shaped connecting steel plate is prefabricated, and reinforcing steel bars are welded on the inner side faces of the transverse plate and the vertical plate of the L-shaped connecting steel plate. A row of screw rods are welded on the outer side surface of the transverse plate of the L-shaped connecting steel plate, as shown in figure 7;
(3) before the main beam on the pier is poured on a construction site, arranging an L-shaped connecting steel plate at the end part of the main beam to be poured, welding the reinforcing steel bars of the L-shaped connecting steel plate with a reinforcing cage of the main beam together as shown in figure 8, and then pouring the main beam as shown in figure 9;
(4) arranging an unbonded layer on the upper side of the transverse plate of the L-shaped connecting steel plate, as shown in FIG. 10;
(5) paving the ultrahigh-performance concrete slabs above two L-shaped connecting steel plates at opposite ends of two adjacent main beams, wherein a screw on each L-shaped connecting steel plate penetrates through a bolt hole in each ultrahigh-performance concrete slab, as shown in fig. 11;
(6) and (3) sleeving a nut on the screw rod penetrating through the ultra-high performance concrete slab and screwing the nut to realize the connection of the ultra-high performance concrete slab and the L-shaped connecting steel plate, as shown in figure 12.
(7) Concrete deck slabs are cast in place above the main beams, and the gaps in the bolt holes and the gaps between the ultra-high performance concrete slabs and the concrete deck slabs are filled with asphalt horseshoe grease, as shown in fig. 13.
Any technical solution disclosed in the present invention is, unless otherwise stated, disclosed a numerical range if it is disclosed, and the disclosed numerical range is a preferred numerical range, and any person skilled in the art should understand that: the preferred ranges are merely those values which are obvious or representative of the technical effect which can be achieved. Because numerical value is more, can't be exhaustive, so the utility model discloses just disclose some numerical values with the illustration the technical scheme of the utility model to, the numerical value that the aforesaid was enumerated should not constitute right the utility model discloses create the restriction of protection scope.
The utility model discloses if disclose or related to mutual fixed connection's spare part or structure, then, except that other the note, fixed connection can understand: a detachable fixed connection (for example using bolts or screws) is also understood as: non-detachable fixed connections (e.g. riveting, welding), but of course, fixed connections to each other may also be replaced by one-piece structures (e.g. manufactured integrally using a casting process) (unless it is obviously impossible to use an integral forming process).
In addition, the terms used in any aspect of the present disclosure as described above to indicate positional relationships or shapes include similar, analogous, or approximate states or shapes unless otherwise stated.
The utility model provides an arbitrary part both can be assembled by a plurality of solitary component parts and form, also can be the solitary part that the integrated into one piece technology was made.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the same; although the present invention has been described in detail with reference to preferred embodiments, it should be understood by those skilled in the art that: the invention can be modified or equivalent substituted for some technical features; without departing from the spirit of the present invention, it should be understood that the scope of the claims is intended to cover all such modifications and variations.
Claims (6)
1. The utility model provides an adopt bridge floor continuous connection structure of ultra high performance concrete, includes girder and the pier that supports the girder, its characterized in that: the concrete bridge is characterized in that L-shaped connecting steel plates are buckled at right angles on the end parts of the main beams, the same prefabricated ultrahigh-performance concrete slab is paved above the two L-shaped connecting steel plates at the opposite ends of the two adjacent main beams, the ultrahigh-performance concrete slab is fixedly connected with the two L-shaped connecting steel plates below the ultrahigh-performance concrete slab, a concrete bridge deck is poured on the upper sides of the main beams, and the upper surface of the concrete bridge deck is flush with the upper surface of the ultrahigh-performance concrete slab.
2. The bridge deck continuous connection structure using ultra high performance concrete according to claim 1, wherein: and a screw rod which upwards penetrates through the ultrahigh-performance concrete slab is welded on the upper side surface of the transverse plate of the L-shaped connecting steel plate, and a nut used for locking the ultrahigh-performance concrete slab is screwed on the screw rod.
3. The bridge deck continuous connection structure using ultra high performance concrete according to claim 2, wherein: the ultra-high performance concrete slab is provided with a bolt hole through which a screw rod penetrates upwards, the upper end of the bolt hole is provided with a counter bore, and the nut is located in the counter bore.
4. The bridge deck continuous connection structure using ultra high performance concrete according to claim 3, wherein: and asphalt horseshoe grease is filled in the gap in the bolt hole and the gap between the ultra-high performance concrete slab and the concrete bridge deck.
5. The bridge deck continuous connection structure using ultra high performance concrete according to claim 1, wherein: the transverse plate and the vertical plate of the L-shaped connecting steel plate are welded with reinforcing steel bars, and the reinforcing steel bars are welded with a reinforcing cage of the main beam.
6. The bridge deck continuous connection structure using ultra high performance concrete according to claim 1, wherein: an unbonded layer is arranged between the ultrahigh-performance concrete slab and the L-shaped connecting steel plate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920408940.2U CN209873560U (en) | 2019-03-28 | 2019-03-28 | Bridge deck continuous connection structure adopting ultra-high performance concrete |
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| CN201920408940.2U CN209873560U (en) | 2019-03-28 | 2019-03-28 | Bridge deck continuous connection structure adopting ultra-high performance concrete |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109853377A (en) * | 2019-03-28 | 2019-06-07 | 福州大学 | Using the continuously coupled structure of the bridge floor of ultra-high performance concrete and its construction method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109853377A (en) * | 2019-03-28 | 2019-06-07 | 福州大学 | Using the continuously coupled structure of the bridge floor of ultra-high performance concrete and its construction method |
| CN109853377B (en) * | 2019-03-28 | 2024-03-22 | 福州大学 | Bridge deck continuous connection structure adopting ultra-high performance concrete and construction method thereof |
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