CN112323635A - Construction method for cast-in-place wet joint and bridge structure - Google Patents
Construction method for cast-in-place wet joint and bridge structure Download PDFInfo
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- CN112323635A CN112323635A CN202011175437.0A CN202011175437A CN112323635A CN 112323635 A CN112323635 A CN 112323635A CN 202011175437 A CN202011175437 A CN 202011175437A CN 112323635 A CN112323635 A CN 112323635A
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- wet joint
- bridge
- bridge deck
- cast
- wet
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- 238000010276 construction Methods 0.000 title claims abstract description 30
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 21
- 239000010959 steel Substances 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims description 19
- 230000003014 reinforcing effect Effects 0.000 claims description 13
- 239000004570 mortar (masonry) Substances 0.000 claims description 10
- 230000002787 reinforcement Effects 0.000 claims description 5
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 4
- 238000007788 roughening Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000011010 flushing procedure Methods 0.000 claims 1
- 238000009417 prefabrication Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000009415 formwork Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000004826 seaming Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
- E01D19/125—Grating or flooring for bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/30—Metal
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to a construction method of a cast-in-place wet joint and a bridge structure, comprising the following steps of: prefabricating a deck slab with wet seam floor panels on opposite sides of the deck slab; erecting the integral bridge deck and the steel longitudinal beam; filling a gap between two adjacent bridge decks; and pouring concrete on the wet joint bottom plate to form a wet joint. According to the construction method of the cast-in-place wet joint and the bridge structure, the prefabricated wet joint bottom plate can serve as the bottom die of the cast-in-place wet joint, and the workload of mounting and dismounting the wet joint concrete bottom die is reduced, so that the construction is convenient, and the workload is small.
Description
Technical Field
The invention relates to the technical field of bridge engineering construction, in particular to a construction method of a cast-in-place wet joint and a bridge structure.
Background
With the development of bridge construction in China, the bridge industrialized prefabrication and assembly technology becomes an effective method for ensuring the construction quality in bridge construction and shortening the construction period.
In the related technology, a wet joint is a key part of a prefabricated bridge deck, and the common wet joint construction is to adopt a pull rod to hoist a bottom die and then install a side die to pour concrete to form the wet joint. However, in the traditional construction method, the bottom die needs to be installed, the bottom die needs to be removed after the concrete reaches a certain strength, a construction platform is needed for installing and removing the bottom die, operation is not convenient, a pull rod hole can be reserved after the bottom die is removed, grouting and plugging are needed subsequently, and workload is large.
Disclosure of Invention
The embodiment of the invention provides a construction method for a cast-in-place wet joint and a bridge structure, and aims to solve the problems that a method for pouring the wet joint by hoisting a bottom die through a pull rod is not easy to operate and has high workload in the related art.
In a first aspect, a construction method of a cast-in-place wet joint is provided, which includes the following steps: prefabricating a deck slab with wet seam floor panels on opposite sides of the deck slab; erecting the integral bridge deck and the steel longitudinal beam; filling a gap between two adjacent bridge decks; and pouring concrete on the wet joint bottom plate to form a wet joint.
In some embodiments, the prefabricated bridge deck, the bridge deck having wet seam floor panels on opposite sides thereof, specifically comprises: prefabricating the bridge deck according to preset sizes in a prefabricating field in advance, and integrally pouring the wet joint bottom plates on two opposite sides of the bridge deck along the longitudinal bridge direction in the prefabricating process.
In some embodiments, a first loop of reinforcement is disposed within the deck slab and extends from an interior of the deck slab to above the wet seam floor.
In some embodiments, after filling the gap between two adjacent bridge decks, a second loop reinforcement is laid on the wet seam floor, partially overlapping the first loop reinforcement on both sides thereof, and binding the first loop reinforcement on both sides together.
In some embodiments, before the bridge deck is integrally erected with the steel longitudinal beam, a rough surface is formed on the upper surface of the wet joint bottom plate by means of retarder and water-based roughening, and a rough surface is formed on the outer side surface of the bridge deck in the transverse bridge direction.
In some embodiments, the erecting the bridge deck integrally with the steel longitudinal beam specifically includes: the bridge deck plates are sequentially erected on the steel longitudinal beam, a gap is formed between every two adjacent bridge deck plates, and the gap is smaller than or equal to 10 mm.
In some embodiments, the filling the gap between two adjacent bridge decks specifically includes: and adopting mortar to plug the gap, wherein the strength grade of the mortar is the same as that of concrete for pouring the bridge deck.
In a second aspect, a bridge structure using the construction method of the cast-in-place wet joint comprises: a steel stringer; the bridge deck is fixed on the steel longitudinal beam, and wet joint bottom plates are integrally arranged on two opposite sides of the bridge deck; and the wet joint is positioned between every two adjacent bridge decks and is arranged above the wet joint bottom plate.
In some embodiments, a gap is formed between two adjacent wet joint bottom plates, and the gap is filled with mortar.
In some embodiments, the upper surface of the wet seam floor and the outer side of the bridge deck jointly surround the wet seam, and the upper surface of the wet seam floor and the outer side of the bridge deck are smoothly connected by an arc surface.
The technical scheme provided by the invention has the beneficial effects that:
the embodiment of the invention provides a construction method of a cast-in-place wet joint and a bridge structure.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a flow chart of a construction method of a cast-in-place wet joint according to an embodiment of the present invention;
FIG. 2 is a schematic view of a bridge structure according to an embodiment of the present invention;
FIG. 3 is an enlarged view of A in FIG. 2;
fig. 4 is a schematic structural view of a side die.
In the figure: 1. a bridge deck; 11. a main body; 111. an outer side surface; 12. a wet seam floor; 2. a steel stringer; 3. a first annular reinforcing bar; 4. a gap; 5. a second annular reinforcing bar; 6. transverse bridge direction reinforcing steel bars; 7. wet seaming; 8. and (4) carrying out side molding.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
The embodiment of the invention provides a construction method for a cast-in-place wet joint and a bridge structure, and solves the problems that in the related art, a method for hoisting a bottom die by using a pull rod to cast the wet joint is not easy to operate and has large workload.
Referring to fig. 1, a construction method of a cast-in-place wet joint 7 provided by an embodiment of the present invention includes the following steps:
s101: the bridge deck 1 is prefabricated, with wet seam floor 12 on opposite sides of the deck 1.
In some embodiments, the steel stringers 2 may be assembled into a single unit at a construction plant prior to step S101.
Referring to fig. 2, in some alternative embodiments, in step S101, the prefabricating of the bridge deck 1 with the wet seam floor 12 on two opposite sides of the bridge deck 1 may specifically include the following steps: the method comprises the steps of building steel bars in formworks according to preset sizes in a prefabrication field in advance, pouring concrete in the formworks to prefabricate the bridge deck 1, and integrally pouring wet joint bottom plates 12 on two opposite sides of the bridge deck 1 in the longitudinal bridge direction in the prefabrication process, wherein the width of each wet joint bottom plate 12 is preferably 190mm in the embodiment.
Referring to fig. 3, in some embodiments, in step S101, a first annular reinforcing bar 3 disposed along the longitudinal bridge direction may be disposed in the bridge deck 1, and the first annular reinforcing bar 3 may extend from the inside of the bridge deck 1 to above the wet joint bottom plate 12, so as to enhance the connection strength between the wet joint 7 and the bridge deck 1 after the wet joint 7 is subsequently poured.
S102: the bridge deck 1 and the steel longitudinal beam 2 are integrally erected.
Referring to fig. 3, in some embodiments, before step S102, a rough surface may be formed on the upper surface of the wet joint bottom 12 by using retarder and water to perform roughening, and a rough surface may be formed on the outer lateral surface 111 of the bridge deck 1 in the transverse bridge direction, so that the wet joint 7 is tightly contacted with the upper surface of the wet joint bottom 12, and the wet joint 7 is tightly contacted with the outer lateral surface 111 of the bridge deck 1 in the transverse bridge direction.
Referring to fig. 3, in some alternative embodiments, in step S102, the erecting the bridge deck 1 and the steel longitudinal beam 2 integrally may specifically include: the bridge deck boards 1 are erected on the steel longitudinal beams 2 in sequence, a gap 4 is formed between every two adjacent bridge deck boards 1, the gap 4 is smaller than or equal to 10mm, and in the embodiment, the gap 4 is preferably 10 mm.
S103: filling the gap 4 between two adjacent bridge decks 1.
In some embodiments, in step S103, the filling the gap 4 between two adjacent bridge panels 1 specifically includes: the gap 4 is blocked by adopting mortar, and the strength grade of the mortar can be the same as that of concrete for pouring the bridge deck slab 1, so that the connection strength between the two adjacent bridge deck slabs 1 is ensured, and the gap 4 between the two adjacent bridge deck slabs 1 is prevented from leaking slurry when the wet joint 7 is poured.
Referring to fig. 3, in some embodiments, after step S103, a second annular reinforcing bar 5 may be erected on the wet joint bottom 12, the second annular reinforcing bar 5 partially overlaps the first annular reinforcing bars 3 on both sides thereof, and the first annular reinforcing bars 3 on both sides are bound together, and meanwhile, a plurality of transverse bridging reinforcing bars 6 may be erected above the wet joint bottom 12, and the transverse bridging reinforcing bars 6 connect the plurality of second annular reinforcing bars 5 in series, so as to improve the overall strength.
S104: concrete is poured on the wet joint bottom plate 12 to form the wet joint 7.
Referring to fig. 4, in some embodiments, prior to step S104, side dies 8 may be mounted on opposite sides of wet seam floor 12 that bridge across.
In some embodiments, after step S104, the wet seam 7 may be cured for a predetermined time and then the side mold 8 may be removed.
Referring to fig. 2 and 3, an embodiment of the present invention further provides a bridge structure using the construction method of the cast-in-place wet joint 7, which includes: a steel longitudinal beam 2; the bridge deck 1 is fixed on the steel longitudinal beam 2, and wet joint bottom plates 12 are integrally arranged on two opposite sides of the bridge deck 1; and a wet seam 7 between two adjacent bridge decks 1, the wet seam 7 being disposed above the wet seam floor 12.
Referring to fig. 2, in some embodiments, the bridge deck 1 may include a main body 11, and wet seam bottom boards 12 disposed on opposite sides of the main body 11, wherein the main body 11 may be a rectangular parallelepiped and has a top surface and a bottom surface disposed opposite to each other, the main body 11 further has outer side surfaces 111 disposed on both sides of the top surface, the outer side surfaces 111 may be disposed along a transverse bridge direction, and the wet seam bottom boards 12 may be formed to extend from the outer side surfaces 111 in a direction away from the main body 11.
Referring to fig. 2 and 3, in some alternative embodiments, the outer side surface 111 may be a vertical surface, and the upper surface of the wet joint bottom plate 12 may be an inclined surface, the outer side surface 111 of the bridge deck 1 and the upper surface of the wet joint bottom plate 12 may together surround the wet joint 7, and the upper surface of the wet joint bottom plate 12 and the outer side surface 111 of the bridge deck 1 may smoothly meet through a circular arc surface, so that when the wet joint 7 is formed by pouring, concrete can smoothly flow and be uniformly distributed in a space surrounded by the outer side surface 111 and the upper surface of the wet joint bottom plate 12, and the finally formed wet joint 7 has uniform strength.
Referring to fig. 3, in some embodiments, a gap 4 may be formed between two adjacent wet joint bottom plates 12 to prevent the bridge deck 1 from colliding during installation, and mortar may be filled in the gap 4, and the strength level of the mortar may be the same as that of concrete for casting the bridge deck 1, so as to ensure the connection strength between two adjacent bridge decks 1 and prevent slurry leakage from the gap 4 between two adjacent bridge decks 1 when the wet joint 7 is cast.
The construction method of the cast-in-place wet joint 7 and the bridge structure provided by the embodiment of the invention have the following principles:
because the wet joint bottom plates 12 are formed on the two opposite sides of the bridge deck 1 when the bridge deck 1 is prefabricated, when the wet joint 7 between the two adjacent bridge decks 1 is formed by pouring, the pre-prepared wet joint bottom plates 12 can serve as bottom moulds of the cast-in-place wet joint 7, when the wet joint 7 is poured, concrete is poured on the wet joint bottom plates 12 between the wet joint bottom plates, the bottom moulds do not need to be installed and dismantled, only the side moulds 8 need to be installed, and the installation and dismantling workload of the wet joint 7 concrete bottom moulds is reduced, so that the construction is convenient, and the workload is small.
In the description of the present invention, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
It is to be noted that, in the present invention, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A construction method of a cast-in-place wet joint is characterized by comprising the following steps:
prefabricating a bridge deck (1), said bridge deck (1) having wet seam floor (12) on opposite sides;
erecting the bridge deck (1) and the steel longitudinal beam (2) integrally;
filling a gap (4) between two adjacent bridge decks (1);
and pouring concrete on the wet joint bottom plate (12) to form a wet joint (7).
2. A method of constructing a cast-in-place wet joint according to claim 1, wherein the prefabricated bridge deck (1) has wet joint bottom plates (12) on opposite sides of the bridge deck (1), and comprises:
the bridge deck (1) is prefabricated in a prefabricating field according to a preset size in advance, and in the prefabricating process, the wet joint bottom plates (12) are integrally poured on two opposite sides of the bridge deck (1) in the longitudinal bridge direction.
3. A method of constructing a cast-in-place wet joint as claimed in claim 2, wherein:
be equipped with first annular reinforcing bar (3) in decking (1), first annular reinforcing bar (3) certainly the inside of decking (1) extends to the top of wet joint bottom plate (12).
4. A method of constructing a cast-in-place wet joint as claimed in claim 3, wherein:
after filling the gap (4) between two adjacent bridge decks (1), a second ring reinforcement (5) is laid on the wet joint bottom (12),
the second ring-shaped reinforcing steel bar (5) is partially overlapped with the first ring-shaped reinforcing steel bars (3) on both sides thereof, and the first ring-shaped reinforcing steel bars (3) on both sides are bound together.
5. A method of constructing a cast-in-place wet joint as claimed in claim 1, wherein:
before the bridge deck (1) and the steel longitudinal beam (2) are integrally erected, a rough surface is formed on the upper surface of the wet joint bottom plate (12) in a retarder and water flushing and roughening mode,
and a rough surface is formed on the outer side surface (111) of the bridge deck (1) along the transverse bridge direction.
6. A method for constructing a cast-in-place wet joint according to claim 1, wherein the erection of the bridge deck (1) integrally with the steel stringers (2) comprises:
the bridge deck plates (1) are sequentially erected on the steel longitudinal beams (2), a gap (4) is formed between every two adjacent bridge deck plates (1), and the gap (4) is smaller than or equal to 10 mm.
7. A method for constructing a cast-in-place wet joint according to claim 1, wherein said filling the gap (4) between two adjacent bridge decks (1) comprises:
and adopting mortar to plug the gap (4), wherein the strength grade of the mortar is the same as that of concrete for pouring the bridge deck (1).
8. A bridge construction using the construction method of the cast-in-place wet joint according to claim 1, comprising:
a steel stringer (2);
the bridge deck (1) is fixed on the steel longitudinal beam (2), and wet joint bottom plates (12) are integrally arranged on two opposite sides of the bridge deck (1);
wet joints (7) are located between two adjacent bridge decks (1), and the wet joints (7) are arranged above the wet joint bottom plates (12).
9. The bridge construction of claim 8, wherein:
a gap (4) is formed between every two adjacent wet joint bottom plates (12), and mortar is filled in the gap (4).
10. The bridge construction of claim 8, wherein:
the upper surface of the wet joint bottom plate (12) and the outer side surface (111) of the bridge deck (1) jointly surround the wet joint (7), and the upper surface of the wet joint bottom plate (12) and the outer side surface (111) of the bridge deck (1) are smoothly connected through an arc surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011175437.0A CN112323635A (en) | 2020-10-28 | 2020-10-28 | Construction method for cast-in-place wet joint and bridge structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011175437.0A CN112323635A (en) | 2020-10-28 | 2020-10-28 | Construction method for cast-in-place wet joint and bridge structure |
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| CN112323635A true CN112323635A (en) | 2021-02-05 |
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| CN202011175437.0A Pending CN112323635A (en) | 2020-10-28 | 2020-10-28 | Construction method for cast-in-place wet joint and bridge structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113430913A (en) * | 2021-06-24 | 2021-09-24 | 中铁隧道局集团建设有限公司 | Wet joint construction method for steel plate combination beam bridge deck slab |
| CN113524430A (en) * | 2021-06-10 | 2021-10-22 | 中铁隧道局集团建设有限公司 | Method for prefabricating bridge deck by using stub matching method |
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| KR20060041078A (en) * | 2004-11-08 | 2006-05-11 | 주식회사 포스코건설 | Continuous steel bridge having precast concrete slab and construction method thereof |
| CN105220771A (en) * | 2015-09-21 | 2016-01-06 | 中铁上海工程局集团有限公司 | A kind of prefabricated fair-faced post wets seam method of attachment |
| CN107938504A (en) * | 2017-10-18 | 2018-04-20 | 重庆大学 | A kind of wet seam construction of floorings using T reinforcing bars and its construction method |
| CN108867374A (en) * | 2018-08-02 | 2018-11-23 | 东南大学 | A kind of wet seam construction of floorings U-shaped reinforcing bar and construction method for exempting from bed die |
| CN210597029U (en) * | 2019-06-24 | 2020-05-22 | 中铁十局集团第二工程有限公司 | Template suspension device for wet joint of bridge |
-
2020
- 2020-10-28 CN CN202011175437.0A patent/CN112323635A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060041078A (en) * | 2004-11-08 | 2006-05-11 | 주식회사 포스코건설 | Continuous steel bridge having precast concrete slab and construction method thereof |
| CN105220771A (en) * | 2015-09-21 | 2016-01-06 | 中铁上海工程局集团有限公司 | A kind of prefabricated fair-faced post wets seam method of attachment |
| CN107938504A (en) * | 2017-10-18 | 2018-04-20 | 重庆大学 | A kind of wet seam construction of floorings using T reinforcing bars and its construction method |
| CN108867374A (en) * | 2018-08-02 | 2018-11-23 | 东南大学 | A kind of wet seam construction of floorings U-shaped reinforcing bar and construction method for exempting from bed die |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113524430A (en) * | 2021-06-10 | 2021-10-22 | 中铁隧道局集团建设有限公司 | Method for prefabricating bridge deck by using stub matching method |
| CN113430913A (en) * | 2021-06-24 | 2021-09-24 | 中铁隧道局集团建设有限公司 | Wet joint construction method for steel plate combination beam bridge deck slab |
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Application publication date: 20210205 |