CN210596967U - Set up prefabricated simple-supported box girder bridge of wet seam connecting piece of steel construction - Google Patents

Set up prefabricated simple-supported box girder bridge of wet seam connecting piece of steel construction Download PDF

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Publication number
CN210596967U
CN210596967U CN201921156876.XU CN201921156876U CN210596967U CN 210596967 U CN210596967 U CN 210596967U CN 201921156876 U CN201921156876 U CN 201921156876U CN 210596967 U CN210596967 U CN 210596967U
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plate
box girder
waist
wet joint
prefabricated
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李鹏
曹阳
王盼
李怡冰
钱盈
肖昌仁
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Hubei Urban Construction Design Institute Co ltd
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Hubei Urban Construction Design Institute Co ltd
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Abstract

The utility model discloses a set up prefabricated simple box girder bridge of wet seam connecting piece of steel construction, include: the box girder comprises an edge girder, a middle girder, a first metal fixing part and concrete, wherein the edge girder and the middle girder are arranged side by side, a first box girder wet joint is arranged between the edge girder and the middle girder, and a first transverse steel bar arranged along the width direction of the edge girder is arranged in the edge girder; a second transverse steel bar arranged along the width direction of the middle beam is arranged in the middle beam; the first metal fixing piece is arranged in the first box girder wet joint along the length direction of the first box girder wet joint, and one ends of the first transverse steel bars, which are adjacent to the second transverse steel bars, are fixedly connected with the first metal fixing piece; the first box girder wet joint is used for pouring concrete; and one ends of the first transverse steel bars, which are adjacent to the second transverse steel bars, are fixedly connected with the first metal fixing piece, so that the concrete can bear larger transverse load after being poured on the wet joint of the first box girder.

Description

Set up prefabricated simple-supported box girder bridge of wet seam connecting piece of steel construction
Technical Field
The utility model relates to a transportation industry bridge culvert engineering field, concretely relates to set up prefabricated letter box girder bridge of wet seam connecting piece of steel construction.
Background
The prestressed concrete simply-supported small box girder has a closed thin-wall section and high rigidity, upper load is transferred through a transverse wet joint, each box girder is uniformly stressed, has good integrity and strong torsion resistance, can be produced and constructed in a modularized mode by adopting a prefabricated and assembled construction method, and is widely applied to highway bridges and municipal bridges with the span of 25-40 m. The traditional prestressed concrete small box girder has obviously reduced material resistance and service performance due to aging in the operation period, external environment influence and increasingly increased upper vehicle load, the transverse wet joint of the small box girder is subjected to the reciprocating load action of an overloaded vehicle for a long time due to the adoption of a reinforced concrete structure, the local damage is serious, serious diseases such as cracking, breakage, water leakage and the like occur, and the damage of the wet joint is further developed, thereby causing the transverse distribution of the load of the small box girder to change, and developing the situation of single girder stress when the load is serious, threatening the safety of the main body of the bridge structure, therefore, the prefabricated simply-supported box girder bridge provided with the steel structure wet joint connecting piece optimizes the transverse wet joint structure between the box girders, improves the strength and durability of the transverse wet joint, avoids the damage and the damage of the transverse wet joint, ensures the driving safety of the bridge and has very important engineering significance.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned technique not enough, provide a prefabricated letter box girder bridge that sets up the wet seam connecting piece of steel construction to optimize the horizontal wet seam structure between the case roof beam, improve the intensity and the durability of horizontal wet seam.
In order to achieve the technical purpose, the technical scheme of the utility model provide a set up prefabricated simple box girder bridge of wet seam connecting piece of steel construction, include: the box girder comprises an edge girder, a middle girder, a first metal fixing part and concrete, wherein the edge girder and the middle girder are arranged side by side, a first box girder wet joint is arranged between the edge girder and the middle girder, and a first transverse steel bar arranged along the width direction of the edge girder is arranged in the edge girder; a second transverse steel bar arranged along the width direction of the middle beam is arranged in the middle beam; the first metal fixing piece is arranged in the first box girder wet joint along the length direction of the first box girder wet joint, and one ends of the first transverse steel bars, which are adjacent to the second transverse steel bars, are fixedly connected with the first metal fixing piece; the first box girder wet joint is used for pouring concrete.
Compared with the prior art, the beneficial effects of the utility model include: this set up in the wet seam connecting piece of steel construction's prefabricated simple box girder bridge the wet seam of first case roof beam is used for pouring the concrete, and makes the adjacent side of boundary beam, well roof beam is even as an organic whole, because first metal firmware is followed place in the length direction of the wet seam of first case roof beam in the wet seam of first case roof beam, first transverse reinforcement with the adjacent one end of second transverse reinforcement all with first metal firmware fixed connection makes concrete placement in can bear bigger transverse load behind the wet seam of first case roof beam to the intensity and the durability of the wet seam of first case roof beam have been guaranteed.
Drawings
Fig. 1 is a schematic view of a connection structure of an edge beam, a center beam and a prefabricated bridge deck according to an embodiment of the present invention.
Fig. 2 is a schematic cross-sectional structure diagram of an end portion of a side sill according to an embodiment of the present invention.
Fig. 3 is a schematic cross-sectional structural view of a center span of a side sill according to an embodiment of the present invention.
Fig. 4 is a schematic cross-sectional structure diagram of an end portion of a center sill according to an embodiment of the present invention.
Fig. 5 is a schematic cross-sectional structure diagram of a center sill midspan in an embodiment of the present invention.
Fig. 6 is a schematic perspective view of a first metal beam according to an embodiment of the present invention.
Fig. 7 is a schematic left side view of the structure of fig. 6.
Fig. 8 is a schematic view of a connection structure of the first transverse steel bar, the second transverse steel bar and the first metal beam in an embodiment of the present invention.
Fig. 9 is a schematic view of a connection structure between a second transverse steel bar and a second metal beam according to an embodiment of the present invention.
Fig. 10 is a schematic view of a connection structure of an edge beam, a center beam and a first metal beam according to an embodiment of the present invention.
Fig. 11 is a schematic view of a connection structure between two adjacent center sills and a second metal beam according to an embodiment of the present invention.
Fig. 12 is a schematic perspective view of a prefabricated bridge deck according to an embodiment of the present invention.
Fig. 13 is a schematic view illustrating a connection structure of two prefabricated bridge decks according to an embodiment of the present invention.
Fig. 14 is a schematic view of a connection structure of the boundary beam, the center beam, the first metal beam, and the second metal beam according to an embodiment of the present invention.
Fig. 15 is a cross-sectional layout view of an embodiment of the prefabricated simply supported box girder bridge provided with the steel structure wet seam connecting piece.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 to 5, the present embodiment provides a prefabricated simply supported box girder bridge with a steel structure wet joint connecting member, including: boundary beam 1, centre sill 2 and first metal firmware 3.
The boundary beam 1 and the middle beam 2 are arranged side by side, a first box beam wet joint a is arranged between the boundary beam 1 and the middle beam 2, and a first transverse steel bar 1a arranged along the width direction of the boundary beam 1 is arranged in the boundary beam.
And a second transverse steel bar 2a arranged along the width direction of the middle beam 2 is arranged in the middle beam.
The first metal fixing piece 3 is arranged in the first box girder wet joint a along the length direction of the first box girder wet joint a, and one end of the first transverse steel bar 1a adjacent to the second transverse steel bar 2a is fixedly connected with the first metal fixing piece 3.
And concrete c is poured in the first box girder wet joint and is used for connecting the boundary beam 1 and the middle beam 2, and the concrete c is preferably micro-expansive concrete.
The first box girder wet joint in the prefabricated simply supported box girder bridge provided with the steel structure wet joint connecting piece is used for pouring concrete c, and enables the adjacent sides of the boundary beam 1 and the middle beam 2 to be connected into a whole, and because the first metal fixing piece 3 is arranged in the first box girder wet joint a in the length direction of the first box girder wet joint a, the adjacent ends of the first transverse reinforcing steel bar 1a and the second transverse reinforcing steel bar 2a are fixedly connected with the first metal fixing piece 3, the concrete poured in the first box girder wet joint a can bear larger transverse load, so that the strength and the durability of the first box girder wet joint a are ensured.
Referring to fig. 6, this embodiment provides a preferred embodiment, the first metal fixing member 3 includes a first top plate 31, a first bottom plate 32, a first waist plate 33 and a first shear pin 34, the first top plate 31 is horizontally disposed, the first top plate 31 is disposed above the first bottom plate 32 in parallel, and the first top plate 31 and the first bottom plate 32 have the same width.
The first waist plate 33 is arranged along the length direction of the first bottom plate 32, the upper side of the first waist plate 33 is fixedly connected with the first top plate 31, the lower side of the first waist plate 33 is fixedly connected with the first bottom plate 32, specifically, the first top plate 31, the first bottom plate 32 and the first waist plate 33 are fixed by linear welding or integrally cast, in this embodiment, the first metal fixing member 3 is integrally made of a steel structure.
The lower end of the first shear pin 34 is fixedly connected with the first top plate 31, and the upper end of the first shear pin 34 protrudes out of the wet joint of the first box girder, specifically, the first shear pin 34 may be welded and fixed with the first top plate 31, or the first shear pin 34 is screwed into a threaded hole formed in the first top plate 31.
Referring to fig. 7, 8, and 10, a plurality of first through holes 33a penetrating through end surfaces of left and right sides of the first waist plate 33 are formed in the first waist plate 33, the first transverse steel bars 1a and the second transverse steel bars 2a are both a plurality of first transverse steel bars 1a and a plurality of second transverse steel bars 2a are uniformly and correspondingly inserted into the plurality of first through holes 33a, the adjacent first transverse steel bars 1a and the adjacent second transverse steel bars 2a are inserted into the same first through hole 33a, and the first transverse steel bars 1a and the second transverse steel bars 2a are both welded and fixed to the first through holes 33 a.
Referring to fig. 2 and 3, the edge beam 1 includes an edge beam top plate 11, an edge beam bottom plate 12 and two edge beam waist plates 13, the edge beam top plate 11 is horizontally disposed, the edge beam top plate 11 is disposed above the edge beam bottom plate 12 in parallel, the two edge beam waist plates 13 are both disposed along the length direction of the edge beam bottom plate 12, the upper side of the edge beam waist plate 13 is fixedly connected to the edge beam top plate 11, the lower side of the edge beam waist plate 13 is fixedly connected to the edge beam bottom plate 12, the distance between the two edge beam waist plates 13 is gradually increased from bottom to top, one end of the first transverse steel bar 1a is disposed in the edge beam top plate 11, in this embodiment, the first transverse steel bar 1a is disposed in two rows vertically opposite to each other, and the two adjacent first transverse steel bars 1a are two ends of the same steel bar bent into a U shape, and the upper and lower integrated structures further improve the strength of the boundary beam top plate 11.
The side sill waist plate is characterized in that a first prestressed steel beam 13a arranged along the length direction of the side sill waist plate is arranged in the side sill waist plate 13, the strength of the side sill waist plate 13 is improved by the first prestressed steel beam 13a, a second prestressed steel beam 12a arranged along the length direction of the side sill bottom plate is arranged in the side sill bottom plate 12, and the strength of the side sill bottom plate 12 is improved by the second prestressed steel beam 12 a.
Referring to fig. 4 and 5, the center sill 2 includes a center sill top plate 21, a center sill bottom plate 22 and a center sill waist plate 23, the center sill top plate 21 is horizontally arranged, and the center sill top plate 21 is arranged above the center sill bottom plate 22 in parallel; the number of the middle beam waist plates 23 is two, the two middle beam waist plates 23 are arranged along the length direction of the middle beam bottom plate 22, the upper sides of the middle beam waist plates 23 are fixedly connected with the middle beam top plate 21, the lower sides of the middle beam waist plates 23 are fixedly connected with the middle beam bottom plate 22, and the distance between the two middle beam waist plates 23 is gradually increased from bottom to top; the middle section of the second transverse steel bar 2a is arranged in the middle beam top plate 21, in the embodiment, the second transverse steel bar 2a is arranged in two rows up and down oppositely, so that the strength of the side beam top plate 21 is improved, and two ends of the second transverse steel bar 2a extend out of the left side and the right side of the side beam top plate 21 respectively.
The center sill waist plate 23 is internally provided with a third prestressed steel strand 23a arranged along the length direction of the center sill waist plate, the third prestressed steel strand 23a improves the strength of the center sill waist plate 23, the center sill bottom plate 22 is internally provided with a fourth prestressed steel strand 22a arranged along the length direction of the center sill bottom plate, and the fourth prestressed steel strand 22a improves the strength of the center sill bottom plate 22.
Referring to fig. 12 to 15, in this embodiment, the prefabricated simply supported box girder bridge with the steel structure wet joint connecting member further includes a prefabricated bridge deck 4 and a bridge deck pavement layer 5, the prefabricated bridge deck 4 is horizontally laid on the upper end surfaces of the side beams 1 and the middle beam 2, the prefabricated bridge deck 4 is arranged along the length direction of the middle beam top plate 21, the two bridge deck pavement layers 5 are arranged side by side, a first shear nail groove 4a penetrating through the upper and lower end surfaces of the prefabricated bridge deck 4 is formed in the prefabricated bridge deck 4, the upper end of the first shear nail 34 is embedded in the first shear nail groove 4a, and the bridge deck pavement layer 5 is laid on the upper end surface of the prefabricated bridge deck 4.
The embodiment further provides a preferred embodiment, the number of the edge beams 1 is two, the number of the middle beams 2 is four, the number of the first metal fasteners 3 is two, the embodiment further includes three sets of second metal fasteners 03, please refer to fig. 9 and 11, the second metal fasteners 03 and the first metal fasteners 3 have the same structure, the second metal fasteners 03 include second top plates 031, second bottom plates 032, second waist plates 033 and third shear nails 034, the second waist plates 033 are provided with second through holes 033a penetrating through end surfaces of two sides thereof, two names are used here to distinguish readers, the four middle beams 2 are sequentially arranged side by side, a second box beam wet joint b is provided between every two adjacent middle beams, specifically, the second box beam wet joint b is provided between two adjacent middle beam top plates 21, the three sets of second metal fasteners are correspondingly arranged in the three second box beam wet joints b, the shape and size of the second box wet joint b are consistent with those of the first box wet joint a, the adjacent ends of the second transverse steel bars 2a on two adjacent middle beams 2 are fixedly connected with the same second metal fixing piece, the connection mode of the second transverse steel bars 2a with the second metal fixing piece and the first metal fixing piece 1 is the same, and the description is not repeated here.
During specific construction, firstly prefabricating the boundary beam 1, the middle beam 2, the first metal fixing part 3, the second metal fixing part 03 and the prefabricated bridge deck 4 in a factory, wherein the boundary beam 1 and the middle beam 2 are both concrete collar building parts with built-in steel bars, the first metal fixing part 3 and the second metal fixing part are both steel, then conveying the boundary beam 1, the middle beam 2, the first metal fixing part 3, the second metal fixing part and the prefabricated bridge deck 4 to a bridge site, hoisting the boundary beam 1 and the middle beam 2, forming a first box beam wet joint a between the adjacent boundary beam 1 and the middle beam 2, forming a second box beam wet joint b between the adjacent two middle beams 2, then pouring concrete c into the first box beam wet joint a and the second box beam wet joint b, and then hoisting the two prefabricated bridge decks 4 to the middle beam top plate 21, the middle beam top plate b, the first box beam top plate b and the second box beam top plate b, The upper end face of the side beam top plate 11 is used for placing the first shear nails 34 in the first shear nail grooves 4a, then concrete c is poured into the bridge plate wet joints d arranged between the two adjacent prefabricated bridge deck plates 4, so that the adjacent sides of the two adjacent prefabricated bridge deck plates 4 are fixedly connected, in addition, in the embodiment, the adjacent sides of the two prefabricated bridge deck plates 4 are respectively provided with a second shear nail 4b which is transversely arranged, therefore, the connecting strength of the two prefabricated bridge deck plates 4 and the concrete is improved, finally, a bridge deck pavement layer 5 is poured on the prefabricated bridge deck plates 4, and then a pavement base 6a, a pavement guardrail 6b and a sidewalk plate 6c are constructed.
The utility model discloses a compare with traditional prestressed concrete small box girder, set up steel construction connecting piece (first metal firmware 3 in this patent promptly, second metal firmware) in horizontal wet seam (first case roof beam wet seam an and the wet seam b of second case roof beam in this patent promptly), boundary beam 1, connect jointly through the little expanded concrete in first shear force nail 34 on the first metal firmware 3 and the wet seam of first case roof beam between the well roof beam 2, transverse connection is more reliable durable, and the effectual wet seam disease of avoiding the box girder bridge takes place to the shrink that little expanded concrete can compensate the concrete, prevention and cure concrete crack improves the concrete performance, boundary beam 1, well roof beam 2, first metal firmware 3, second metal firmware, prefabricated decking 4 can be prefabricated in the mill simultaneously, and site hoisting is under construction, and construction cycle reduces by a wide margin.
The above description of the present invention does not limit the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the scope of the claims of the present invention.

Claims (9)

1. The utility model provides a set up prefabricated simple-supported box girder bridge of wet seam connecting piece of steel construction which characterized in that includes: boundary beam, well roof beam and first metal firmware, wherein:
the edge beam and the middle beam are arranged side by side, a first box beam wet joint is arranged between the edge beam and the middle beam, and a first transverse steel bar arranged along the width direction of the edge beam is arranged in the edge beam;
a second transverse steel bar arranged along the width direction of the middle beam is arranged in the middle beam;
the first metal fixing piece is arranged in the first box girder wet joint along the length direction of the first box girder wet joint, and one ends of the first transverse steel bars, which are adjacent to the second transverse steel bars, are fixedly connected with the first metal fixing piece;
the first box girder wet joint is used for pouring concrete.
2. The precast simple supported box girder bridge provided with the steel structure wet joint connection according to claim 1, wherein the first metal fixture comprises a first top plate, a first bottom plate, a first waist plate and a first shear pin, wherein:
the first top plate is horizontally arranged, and the first top plate is arranged above the first bottom plate in parallel; the first waist plate is arranged along the length direction of the first bottom plate, the upper side of the first waist plate is fixedly connected with the first top plate, and the lower side of the first waist plate is fixedly connected with the first bottom plate; the lower end of the first shear pin is fixedly connected with the first top plate, and the upper end of the first shear pin protrudes out of the wet joint of the first box girder.
3. The prefabricated simply supported box girder bridge with the steel structure wet joint connectors according to claim 2, wherein the first waist plate is provided with a plurality of first through holes penetrating through end surfaces of left and right sides of the first waist plate, the first transverse steel bars and the second transverse steel bars are both provided with a plurality of first through holes, and the first transverse steel bars and the second transverse steel bars are inserted into the first through holes in a one-to-one correspondence manner.
4. The prefabricated simple-supported box girder bridge with the steel structure wet joint connecting piece as claimed in claim 2, wherein the prefabricated simple-supported box girder bridge with the steel structure wet joint connecting piece further comprises a prefabricated bridge deck, the prefabricated bridge deck is laid on the upper end surfaces of the side beams and the middle beam, a first shear nail groove penetrating through the upper end surface and the lower end surface of the prefabricated bridge deck is formed in the prefabricated bridge deck, and the first shear nail groove is formed in the upper end of the first shear nail.
5. The prefabricated simple-supported box girder bridge with the steel structure wet joint connecting pieces as claimed in claim 4, wherein the prefabricated simple-supported box girder bridge with the steel structure wet joint connecting pieces further comprises a bridge deck pavement layer, and the bridge deck pavement layer is laid on the upper end face of the prefabricated bridge deck.
6. The bridge of claim 1, wherein the edge beams comprise an edge beam top plate, an edge beam bottom plate and an edge beam waist plate, wherein:
the side beam top plate is horizontally arranged and is arranged above the side beam bottom plate in parallel; the two side beam waist plates are arranged along the length direction of the side beam bottom plate, the upper sides of the side beam waist plates are fixedly connected with the side beam top plate, the lower sides of the side beam waist plates are fixedly connected with the side beam bottom plate, and the distance between the two side beam waist plates is gradually increased from bottom to top; one end of the first transverse steel bar is arranged in the boundary beam top plate.
7. The precast simple-supported box girder bridge with the steel structure wet joint connection piece as recited in claim 6, wherein a first prestressed steel strand is arranged in the side sill waist panel along the length direction thereof, and a second prestressed steel strand is arranged in the side sill bottom panel along the length direction thereof.
8. The bridge of claim 1, wherein the center sill comprises a top center sill plate, a bottom center sill plate and a waist center sill plate, and wherein:
the center sill top plate is horizontally arranged and is arranged above the center sill bottom plate in parallel; the number of the middle beam waist plates is two, the two middle beam waist plates are arranged along the length direction of the middle beam bottom plate, the upper side of each middle beam waist plate is fixedly connected with the middle beam top plate, the lower side of each middle beam waist plate is fixedly connected with the middle beam bottom plate, and the distance between the two middle beam waist plates is gradually increased from bottom to top; the middle section of the second transverse steel bar is arranged in the middle beam top plate.
9. The prefabricated simple-supported box girder bridge with the steel structure wet joint connection piece as claimed in claim 8, wherein a third prestressed steel strand is arranged in the middle beam waist plate along the length direction of the middle beam waist plate, and a fourth prestressed steel strand is arranged in the middle beam bottom plate along the length direction of the middle beam bottom plate.
CN201921156876.XU 2019-07-22 2019-07-22 Set up prefabricated simple-supported box girder bridge of wet seam connecting piece of steel construction Active CN210596967U (en)

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Application Number Priority Date Filing Date Title
CN201921156876.XU CN210596967U (en) 2019-07-22 2019-07-22 Set up prefabricated simple-supported box girder bridge of wet seam connecting piece of steel construction

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Application Number Priority Date Filing Date Title
CN201921156876.XU CN210596967U (en) 2019-07-22 2019-07-22 Set up prefabricated simple-supported box girder bridge of wet seam connecting piece of steel construction

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111622118A (en) * 2020-05-29 2020-09-04 中铁大桥局第七工程有限公司 Sidewalk erecting method based on steel box girder cantilever arm

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111622118A (en) * 2020-05-29 2020-09-04 中铁大桥局第七工程有限公司 Sidewalk erecting method based on steel box girder cantilever arm
CN111622118B (en) * 2020-05-29 2021-08-10 中铁大桥局第七工程有限公司 Sidewalk erecting method based on steel box girder cantilever arm

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