CN219653506U - Bridge floor is with two-way PBL shear force key - Google Patents
Bridge floor is with two-way PBL shear force key Download PDFInfo
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- CN219653506U CN219653506U CN202320132705.3U CN202320132705U CN219653506U CN 219653506 U CN219653506 U CN 219653506U CN 202320132705 U CN202320132705 U CN 202320132705U CN 219653506 U CN219653506 U CN 219653506U
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 40
- 239000010959 steel Substances 0.000 claims abstract description 40
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- 230000002457 bidirectional effect Effects 0.000 abstract description 9
- 229910001294 Reinforcing steel Inorganic materials 0.000 abstract description 7
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 239000002131 composite material Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
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- Bridges Or Land Bridges (AREA)
Abstract
The utility model discloses a bidirectional PBL shear key for a bridge deck, which relates to the technical field of engineering connection structures and comprises an I-shaped rigid plate, wherein a PBL key is arranged on the upper flange of the I-shaped rigid plate, a plurality of reinforcing steel bars penetrating through the PBL key are uniformly distributed on the PBL key, and the PBL key consists of a longitudinal steel plate and a transverse steel plate which are mutually perpendicular. The bidirectional PBL shear key provided by the utility model can increase the shear strength of the PBL key, improve the integrity of concrete and reinforcing steel bars, greatly shorten the whole replacement period, and is safer, more reliable and more convenient. The project adopts a two-way PBL key, has an innovative concept, combines with the actual requirements of engineering, and has wide application prospect and research value.
Description
Technical Field
The utility model relates to the technical field of engineering connection structures, in particular to a bidirectional PBL shear key for a bridge deck.
Background
The steel-concrete composite structure has been widely used in large bridges, buildings and certain specific structures due to the advantages of convenient construction, high strength, good ductility, corrosion resistance and the like. The shearing-resistant connecting piece is used as an important component in the combined structure, so that the steel component and the concrete form a whole and work cooperatively, and the lifting force of the steel plate and the concrete with a separation trend can be resisted. Therefore, the choice of the shear connector plays a critical role in whether the properties of the materials in the composite structure can be fully utilized. The PBL shear key is one of the main shear connector forms used in the steel-hybrid bridge, and is widely applied to the steel-hybrid section of the large-span hybrid bridge due to the characteristics of high rigidity in the elastic stress stage and good ductility in the plastic stress stage.
The existing PBL shear key comprises an I-shaped rigid plate, wherein the upper flange of the I-shaped rigid plate is provided with a PBL key which is arranged on the same plane as a web plate, the PBL key is also uniformly provided with a plurality of reinforcing bars which penetrate through the PBL key, the reinforcing bars are used for forming the PBL shear key and concrete on the upper flange into a whole, as shown in fig. 1 and 2, the PBL shear key is typical in the prior art, the reinforcing bars are replaced by bolts in fig. 2, and the bolts replace the PBL shear connection key with common ribs and convenient to install, so that the PBL shear key is convenient to replace. However, the PBL bonds shown in fig. 1 and 2 are both prone to poor integrity of concrete and reinforcing bars, and have the disadvantages of insufficient shear strength, etc., and the PBL bonds are generally prone to breakage, corrosion of reinforcing bars, etc. Such diseases pose a great burden to maintenance of bridges, which undoubtedly increases the time cost of logistics, resulting in certain economic losses. Furthermore, there are problems of repeated maintenance, replacement, and the like.
Disclosure of Invention
Aiming at the problems in the prior art, the utility model provides a bidirectional PBL shear key for a bridge deck, which aims to solve the technical problems that the existing PBL shear key has poor concrete and steel bar integrity and has the defects of insufficient shear strength and the like.
The technical scheme adopted by the utility model is as follows:
the utility model provides a two-way PBL shear force key for bridge floor, includes "worker" font rigid plate, is provided with the PBL key at the top flange of "worker" font rigid plate, still equipartition has a plurality of reinforcing bars that run through the PBL key on the PBL key, the PBL key comprises vertical steel sheet and horizontal steel sheet mutually perpendicular.
Preferably, the steel bars on the longitudinal steel plate and the transverse steel plate are positioned at the same horizontal position of the same steel plate, are positioned on different steel plates, are arranged up and down and are mutually perpendicular.
Preferably, two longitudinal steel plates and two transverse steel plates are arranged, and four steel plates are encircled to form a square PBL key.
In summary, compared with the prior art, the utility model has the following advantages and beneficial effects:
the bidirectional PBL shear key provided by the utility model can increase the shear strength of the PBL key, improve the integrity of concrete and reinforcing steel bars, greatly shorten the whole replacement period, and is safer, more reliable and more convenient. The project adopts a two-way PBL key, has an innovative concept, combines with the actual requirements of engineering, and has wide application prospect and research value.
Drawings
FIG. 1 is a schematic view of a conventional PBL shear key structure provided in the prior art;
FIG. 2 is a schematic diagram of a prior art bolted PBL shear key structure;
fig. 3 is a schematic perspective view of a bidirectional PBL shear key provided by the present utility model.
FIG. 4 is a schematic front view of a bi-directional PBL shear key provided by the present utility model;
FIG. 5 is a schematic side view of a bi-directional PBL shear key provided by the present utility model;
in the figure: 1. concrete; 2. reinforcing steel bars; 3. a PBL bond; 4. an I-steel flange; 5. i-steel web.
Detailed Description
In order to make the objects, technical solutions and advantages of the present utility model more apparent, the present utility model will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the particular embodiments described herein are illustrative only and are not intended to limit the utility model, i.e., the embodiments described are merely some, but not all, of the embodiments of the utility model.
Example 1
Fig. 3 to 5 are schematic diagrams of a bidirectional PBL shear key for a bridge deck provided in this embodiment, and it is easy to see that, in this embodiment, compared with the unidirectional PBL shear key shown in fig. 1/2, the bidirectional PBL shear key also includes an i-shaped plate, the i-shaped plate includes an i-shaped steel web 5 and an upper and a lower i-shaped steel flanges 4 connected to the i-shaped steel web 5, a PBL key 3 and concrete 1 are provided on the i-shaped steel flanges 4 above the i-shaped plate, and a reinforcing steel bar 2 is provided on the PBL key 3, which is different in that the PBL key is provided, in this embodiment, longitudinal steel plates and transverse steel plates are mutually perpendicular and surround to form a square PBL key, so that the shear strength of the PBL key can be improved, and because replacement of the PBL key is troublesome, and durability and strength of the PBL key can be well improved by adopting the structure of this embodiment; the longitudinal steel plates and the transverse steel plates are respectively provided with a plurality of holes, and the holes of the longitudinal steel plates and the holes of the transverse steel plates are arranged in a vertically staggered mode, so that inserted reinforcing steel bars are mutually perpendicular, the integrity of the reinforcing steel bars and concrete can be well improved, and the structure has good mechanical properties.
It is clear that the utility model only provides an embodiment in which the longitudinal steel plates, the transverse steel plates are surrounded to form square PBL bonds, but this does not imply the full scope of the claims. In addition, the longitudinal steel plates and the transverse steel plates can be vertically arranged in a cross shape, a groined shape or the like to form a structure of the bidirectional PBL shear system.
The above examples merely illustrate specific embodiments of the utility model, which are described in more detail and are not to be construed as limiting the scope of the utility model. It should be noted that it is possible for a person skilled in the art to make several variants and modifications without departing from the technical idea of the utility model, which fall within the scope of protection of the utility model.
Claims (3)
1. The utility model provides a two-way PBL shear force key for bridge floor, includes "worker" font rigid plate, is provided with the PBL key at the top flange of "worker" font rigid plate, still equipartition has a plurality of reinforcing bars that run through the PBL key on the PBL key, its characterized in that, the PBL key comprises vertical steel sheet and horizontal steel sheet mutually perpendicular.
2. The bi-directional PBL shear key for a bridge deck according to claim 1, wherein the steel bars on the longitudinal steel plates and the transverse steel plates are positioned at the same horizontal position of the same steel plate, are positioned vertically and are mutually perpendicular.
3. The bi-directional PBL shear key for a deck according to claim 1, wherein two longitudinal steel plates and two transverse steel plates are provided, and four steel plates are surrounded to form a square PBL key.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320132705.3U CN219653506U (en) | 2023-02-06 | 2023-02-06 | Bridge floor is with two-way PBL shear force key |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320132705.3U CN219653506U (en) | 2023-02-06 | 2023-02-06 | Bridge floor is with two-way PBL shear force key |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219653506U true CN219653506U (en) | 2023-09-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320132705.3U Active CN219653506U (en) | 2023-02-06 | 2023-02-06 | Bridge floor is with two-way PBL shear force key |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219653506U (en) |
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2023
- 2023-02-06 CN CN202320132705.3U patent/CN219653506U/en active Active
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