CN210315222U - Shear connector for corrugated steel web-concrete combined box girder bridge structure - Google Patents
Shear connector for corrugated steel web-concrete combined box girder bridge structure Download PDFInfo
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- CN210315222U CN210315222U CN201921130357.6U CN201921130357U CN210315222U CN 210315222 U CN210315222 U CN 210315222U CN 201921130357 U CN201921130357 U CN 201921130357U CN 210315222 U CN210315222 U CN 210315222U
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Abstract
The utility model relates to a shear force connecting piece is used to wave form steel web-concrete combination box girder bridge structure belongs to the bridge construction field. In this shear force connecting piece structure, third, fourth limb board butt welding constitute a vertical board, and first, second limb board corresponds respectively and welds perpendicularly in vertical board left and right end face intermediate position, aligns about first limb board and the second limb board, and shear force connecting piece is the cross. The middle positions of the outer sides of the first limb plate, the second limb plate, the third limb plate and the fourth limb plate are respectively provided with an open hole for inserting reinforcing steel bars. The utility model discloses an among the cross shear connector structure, improve horizontal shear capacity through the setting of first, second limb board, vertical shear demand has been guaranteed to third, fourth limb board to satisfy the anti shear capacity and the suitability of the connection site of steel-concrete combination box girder bridge. Furthermore, the utility model discloses a cross shear force connecting piece still has simple structure, and the materials is practiced thrift, and welding construction is easy, and the welding volume is little, can save advantages such as cost.
Description
Technical Field
The utility model belongs to the bridge construction field relates to a wave form steel web-shear force connecting piece for concrete composite box girder bridge structure.
Background
In the bridge structure, the corrugated steel web-concrete combined box girder structure takes a corrugated steel plate as a web, the steel web is connected with a concrete top bottom plate, and the connecting parts between steel and concrete are connected through shear connectors, so that the cooperative work between steel and concrete members is realized. Thus, in such steel-concrete composite structures, shear connectors are particularly important, which are directly related to the load-bearing capacity of the entire box girder structure.
In the development process of the shear connector for the box girder structure, the spiral rib and the bent rib connector are mainly used in the early 50 s and are gradually replaced by the stud connector later. In the 80 s, the PBL connecting piece changes the leading position of the stud connecting piece, and in recent years, the structural form of the shear connecting piece is gradually diversified, such as an inverted L-shaped shear connecting piece, a U-shaped groove shear connecting piece and the like which appear abroad, but the problems of overlarge rigidity, high manufacturing cost, high construction difficulty and the like exist in part of the profile steel shear connecting piece. The contact surface of the inverted L-shaped shear connector is too small, the bearing capacity is poor, the operation is not easy during welding, and the contact surface of the U-shaped groove shear connector is too large, so that the welding workload is large, the rigidity is too large, and brittle failure is easy to occur.
From the mechanical point of view, the problem of shear resistance between the corrugated steel web and concrete along the longitudinal direction in the box girder structure is mainly considered in the existing shear connector, because the web rigidity of the corrugated steel web-concrete combined box girder is far less than that of the common concrete box girder, the space effect is obvious, and the problem that the joint of the corrugated steel web and the concrete combined box girder is transversely sheared is not considered in the traditional shear connector.
Therefore, it is necessary to provide a novel shear connector for a corrugated steel web-concrete composite box girder bridge structure to optimize the shear bearing capacity, the rigidity and the construction applicability of the conventional shear connector.
Disclosure of Invention
The utility model discloses to the space effect and the horizontal shear force problem of current wave form steel web-concrete combination box girder, propose one kind and can realize transversely and vertically shearing to simple structure, construction convenience, save material, rigidity are moderate, the wave form steel web-concrete combination box girder shear force connecting piece for bridge construction that the cost is low.
The utility model discloses the technical scheme who adopts does:
a shear connecting piece for a corrugated steel web-concrete combined box girder bridge structure comprises a first limb plate, a second limb plate, a third limb plate and a fourth limb plate, wherein the third limb plate and the fourth limb plate are butt-welded to form a vertical plate, the first limb plate is vertically welded at the middle position of the left end face of the vertical plate, the second limb plate is vertically welded at the middle position of the right end face of the vertical plate, the first limb plate and the second limb plate are aligned left and right, and the shear connecting piece is in a cross shape; the first limb plate, the second limb plate, the third limb plate and the fourth limb plate are respectively provided with an opening hole for inserting reinforcing steel bars on the outer side.
Further, the opening holes on the outer sides of the first limb plate, the second limb plate, the third limb plate and the fourth limb plate are all located at the middle position.
Further, the opening hole is in a U shape.
Compared with the prior art, the beneficial effects of the utility model reside in that:
(1) the cross-shaped shear connector of the utility model improves the transverse shear resistance through the arrangement of the first and second limb plates; the third and fourth limb plates ensure the longitudinal shear-resistant requirement, thereby meeting the shear-resistant bearing capacity and the applicability of the connecting part of the steel-concrete combined box girder bridge.
(2) The utility model discloses a cross shear force connecting piece simple structure, the materials are practiced thrift, and welding construction is easy, and the welding volume is little, can save the cost, and steel sheet or angle steel welding preparation that its accessible is on-the-spot easy, also can the mill prefabrication, reduce site operation work load, reduction of erection time.
(3) The open holes arranged on the four limb plates are convenient to insert and lay the steel bars, and the combination of the steel bars and the cross-shaped shear connectors can enhance the overall stress performance of the steel-concrete composite structure.
(4) Because the cross section of the shear connecting piece is in a cross shape, the shear connecting piece is easy to vibrate and compact during concrete pouring, and a better concrete pouring effect can be obtained.
(5) The utility model discloses a cross shear connector's rigidity is moderate, possesses certain deformability promptly, compares in the great other shaped steel shear connector of rigidity, can avoid the emergence of brittle failure, and compares in general flexible shear connector, and bearing capacity is higher, and the antifatigue ability of structure is strong.
Drawings
FIG. 1 is a schematic diagram of a shear connector according to a first embodiment;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a front view of FIG. 1;
FIG. 4 is a schematic structural diagram of a shear connector according to a second embodiment;
FIG. 5 is a top view of FIG. 4;
FIG. 6 is a front view of FIG. 4;
FIG. 7 is a schematic structural view of the cross-shaped shear connector of the present invention mounted on a concrete top and bottom plate;
reference numerals: 1-the first limb plate, 2-the second limb plate, 3-the third limb plate, 4-the fourth limb plate.
Detailed Description
The shear connector for corrugated steel web-concrete composite box girder bridge structure of the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
Example one
As shown in fig. 1 to 3, the shear connector includes a first limb plate 1, a second limb plate 2, a third limb plate 3 and a fourth limb plate 4, the third limb plate 3 and the fourth limb plate 4 are butt welded to form a vertical plate, the first limb plate 1 is vertically welded at the middle position of the left end face of the vertical plate, the second limb plate 2 is vertically welded at the middle position of the right end face of the vertical plate, the first limb plate 1 and the second limb plate 2 are aligned left and right, and the shear connector is cross-shaped when viewed from top to bottom; the respective outer side middle positions of the first limb plate 1, the second limb plate 2, the third limb plate 3 and the fourth limb plate 4 are provided with open holes for inserting reinforcing steel bars, and the open holes are in a U shape. In this embodiment, the first limb plate 1, the second limb plate 2, the third limb plate 3 and the fourth limb plate 4 are all made of steel plates.
Example two
As shown in fig. 4 to 6, the structure of the shear connector is substantially the same as that of the first embodiment, except that the shear connector is formed by oppositely welding the backs of two angle steel limbs, and four opening holes are respectively formed on four sides (four limbs) of the two angle steel limbs.
The utility model discloses a wave form steel web-shear force connecting piece for concrete combination box girder bridge structure's application method does:
as shown in fig. 7, the concrete top and bottom plates are arranged on the corrugated steel web, and the plurality of cross-shaped shear connectors are arranged on the concrete top and bottom plates in an array and are welded and fixed. The transverse and longitudinal steel bars pass through the opening holes on the corresponding shear connectors in a staggered manner, and after the arrangement of the steel bars is finished, the plurality of cross-shaped shear connectors and the transverse and longitudinal steel bars form a whole.
The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention in any form, and any skilled person familiar with the art will not depart from the technical scope of the present invention, and the technical spirit of the present invention will be any simple modification, equivalent replacement, and improvement made by the above embodiments, and the like, all still belong to the technical scope of the present invention.
Claims (3)
1. The shear connecting piece for the corrugated steel web-concrete combined box girder bridge structure is characterized by comprising a first limb plate (1), a second limb plate (2), a third limb plate (3) and a fourth limb plate (4), wherein the third limb plate (3) and the fourth limb plate (4) are butt-welded to form a vertical plate, the first limb plate (1) is vertically welded at the middle position of the left end surface of the vertical plate, the second limb plate (2) is vertically welded at the middle position of the right end surface of the vertical plate, the first limb plate (1) and the second limb plate (2) are aligned in the left-right direction, and the shear connecting piece is cross-shaped; the outer sides of the first limb plate (1), the second limb plate (2), the third limb plate (3) and the fourth limb plate (4) are respectively provided with an open hole for inserting reinforcing steel bars.
2. The shear connector for a corrugated steel web-concrete composite box girder bridge structure according to claim 1, wherein the open holes at the outer sides of the first, second, third and fourth limbs (1, 2, 3, 4) are located at middle positions.
3. The shear connector for a corrugated steel web-concrete composite box girder bridge structure according to claim 1 or 2, wherein the open hole is U-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921130357.6U CN210315222U (en) | 2019-07-18 | 2019-07-18 | Shear connector for corrugated steel web-concrete combined box girder bridge structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921130357.6U CN210315222U (en) | 2019-07-18 | 2019-07-18 | Shear connector for corrugated steel web-concrete combined box girder bridge structure |
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| Publication Number | Publication Date |
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| CN210315222U true CN210315222U (en) | 2020-04-14 |
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| CN201921130357.6U Active CN210315222U (en) | 2019-07-18 | 2019-07-18 | Shear connector for corrugated steel web-concrete combined box girder bridge structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110258328A (en) * | 2019-07-18 | 2019-09-20 | 金陵科技学院 | A kind of Wavelike steel webplate-concrete combined box beam bridge structure shear connector |
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2019
- 2019-07-18 CN CN201921130357.6U patent/CN210315222U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110258328A (en) * | 2019-07-18 | 2019-09-20 | 金陵科技学院 | A kind of Wavelike steel webplate-concrete combined box beam bridge structure shear connector |
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