CN110172910B - Connecting structure and connecting method of precast concrete bridge deck - Google Patents
Connecting structure and connecting method of precast concrete bridge deck Download PDFInfo
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- CN110172910B CN110172910B CN201910561752.8A CN201910561752A CN110172910B CN 110172910 B CN110172910 B CN 110172910B CN 201910561752 A CN201910561752 A CN 201910561752A CN 110172910 B CN110172910 B CN 110172910B
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- bridge deck
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- steel bar
- pressing type
- type reinforcing
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- 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
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- 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
Abstract
The invention provides a connecting structure of precast concrete bridge deck boards, which comprises: first prefabricated decking, the prefabricated decking of second still include the push type reinforcing bar, and is a plurality of the push type reinforcing bar anchor is in the prefabricated decking lateral part of second, first prefabricated decking lateral part be provided with the corresponding preformed hole of push type reinforcing bar, the push type reinforcing bar gets into through pressing behind the preformed hole, treat restore the shape after with the pore wall looks lock joint of preformed hole. Compared with the prior art, the connecting structure and the connecting method of the precast concrete bridge deck provided by the invention have the beneficial effects that the preformed hole and the pressing type reinforcing steel bar are arranged to form a clamping structure, so that the first precast bridge deck and the second precast bridge deck are connected more firmly, the integrity of the bridge deck is improved, and meanwhile, the stress at the joint can be relieved.
Description
Technical Field
The invention relates to the technical field of roads and bridges, in particular to a connecting structure and a connecting method of a precast concrete bridge deck.
Background
In the existing assembled bridge, the conventional connection method of the prefabricated bridge deck is as follows: the upper layer and the lower layer of the steel bars extending out of the two prefabricated bridge deck plates are arranged in a staggered mode, the two prefabricated bridge deck plates are mutually overlapped in the longitudinal position, and the mutually overlapped steel bars are welded on site. Then concrete is poured at the place of two prefabricated bridge deck slab joints, the connection is completed after vibration and maintenance, but certain defects and defects exist in the connection mode, firstly, the longitudinal steel bars of the two prefabricated bridge deck slabs are difficult to arrange in a staggered mode, and a large gap can exist between the steel bars arranged in the staggered mode to influence the welding, secondly, because the clear distance between the steel bars is small, the steel bars of the upper layer and the lower layer can be welded very difficultly, and a plurality of factors influencing the welding are numerous, the construction quality is difficult to guarantee, in addition, the welding is carried out on the site, the mechanical cost and the labor cost which need to be input are large, the cost is relatively high, finally, the welding seams of the steel bars are extremely easy to damage under the action of tensile force, the welding seams are torn, and the welding failure is.
Chinese patent publication No.: CN 108691272A discloses a box coupling structure of precast concrete decking of composite beam and construction method thereof, and this connection structure includes first precast decking and second precast decking, the horizontal both sides of first precast decking are provided with a plurality of first reserved reinforcing bars, the horizontal both sides of second precast decking are provided with a plurality of second reserved reinforcing bars, first reserved reinforcing bar and second reserved reinforcing bar are straight reinforcing bar, first reserved reinforcing bar and second reserved reinforcing bar pass through sleeve fixed connection.
Among the above-mentioned technical scheme, though through the first reserved reinforcing bar of muffjoint and the second reserved reinforcing bar, avoided the welding between the reinforcing bar, seam crossing still has very big stress, influences holistic stability.
In view of the above-mentioned drawbacks of the existing prefabricated bridge deck slab connection structure, the present designer has made active research and innovation to create a connection structure of a prefabricated concrete bridge deck slab, so that the connection structure has higher practicability.
Disclosure of Invention
In view of the above, the invention provides a connecting structure of a precast concrete bridge deck slab, and aims to solve the technical problem that the overall stability is affected due to overlarge local stress when the precast bridge deck slab is spliced in the prior art.
The invention provides a connecting structure of a precast concrete bridge deck, which comprises: first prefabricated decking, the prefabricated decking of second still include the push type reinforcing bar, the push type reinforcing bar includes a plurality of first reinforcing bar sections that are the toper setting, and with first reinforcing bar section is the second reinforcing bar section that the acute angle set up, and is a plurality of the push type reinforcing bar anchor is in the prefabricated decking lateral part of second, first prefabricated decking lateral part be provided with the corresponding preformed hole of push type reinforcing bar, the push type reinforcing bar gets into through pressing behind the preformed hole, treat to resume the shape, the second reinforcing bar section with the pore wall looks lock joint of preformed hole.
Further, still include first reserved reinforcing bar, second reserved reinforcing bar, first reserved reinforcing bar crosses first prefabricated decking both sides, the second reserved reinforcing bar crosses second prefabricated decking both sides, just first reserved reinforcing bar with the second reserved reinforcing bar one-to-one, first reserved reinforcing bar with the second reserved reinforcing bar passes through steel bar sleeve rigid coupling.
And further, the high-strength mortar is filled in a gap between the first prefabricated bridge deck slab and the second prefabricated bridge deck slab based on the butt joint of the pressing type reinforcing steel bars and the preformed holes, the first preformed reinforcing steel bars are fixedly connected with the second preformed reinforcing steel bars.
Further, the first reserved steel bar penetrates through the center of the reserved hole, and the second reserved steel bar penetrates through the center of the pressing type steel bar.
Further, the preformed hole is the gradual change form, the preformed hole is kept away from prefabricated decking direction of second includes the first section hole body that first diminishes, the second section hole body that becomes bigger and bigger gradually again, first section hole body is used for right the push type reinforcing bar extrusion, second section hole body is used for the joint the push type reinforcing bar.
Further, the second rebar segment is disposed outwardly.
Furthermore, the pressing type reinforcing steel bars are bound on the side wall of the second reserved reinforcing steel bar through steel wires.
Further, the side wall of the second reserved steel bar is provided with a semicircular groove, and the pressing type steel bar is arranged in the semicircular groove.
Furthermore, a first sawtooth is arranged in the semicircular groove, a second sawtooth is arranged on one side, attached to the semicircular groove, of the pressing type steel bar, and the first sawtooth and the second sawtooth are clamped.
The invention provides a novel connecting method of a precast concrete bridge deck, which comprises the following steps:
step S1: manufacturing a first prefabricated bridge deck with a first reserved steel bar and a reserved hole and a second prefabricated bridge deck with a second reserved steel bar;
step S2: manufacturing a pressing type reinforcing steel bar, and anchoring the pressing type reinforcing steel bar at the side part of the second prefabricated bridge deck;
step S3: pushing the pressing type steel bar into the reserved hole;
step S4: fixedly connecting a first reserved steel bar and a second reserved steel bar through a steel bar sleeve;
step S5: and filling high-strength mortar in a gap between the first prefabricated bridge deck and the second prefabricated bridge deck.
Compared with the prior art, the connecting structure and the connecting method of the precast concrete bridge deck provided by the invention have the beneficial effects that the preformed hole and the pressing type reinforcing steel bar are arranged to form a clamping structure, so that the first precast bridge deck and the second precast bridge deck are connected more firmly, the integrity of the bridge deck is improved, and meanwhile, the stress at the joint can be relieved.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 is an axial schematic view of a connecting structure of precast concrete deck panels;
FIG. 2 is a transverse sectional view of a connecting structure of precast concrete deck boards;
FIG. 3 is a longitudinal enlarged schematic view of a first precast concrete deck connection;
FIG. 4 is a schematic view of a second precast concrete deck slab joint in a laterally enlarged manner;
FIG. 5 is a left side view of the press-type reinforcement bar and the second pre-formed reinforcement bar;
FIG. 6 is a front view of the press-type reinforcement bar and a second pre-formed reinforcement bar;
reference numerals: 1. a first prefabricated bridge deck; 11. reserving a hole; 111. a first section of the porous body; 112. a second section of the hole body; 2. a second prefabricated bridge deck; 3. a first reserved steel bar; 31. a steel bar sleeve; 4. second reserved steel bars; 41. a semicircular groove; 42. a first saw tooth; 5. pressing type reinforcing steel bars; 51. a first section of rebar; 52. a second section of rebar; 53. a second saw tooth; 6. high-strength mortar.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1 to 4, it can be seen that the connecting structure of the precast concrete bridge deck according to the embodiment of the present invention includes: first prefabricated decking 1, prefabricated decking 2 of second, still include push type reinforcing bar 5, push type reinforcing bar 5 includes a plurality of first reinforcing bar sections 51 that are the toper setting, and be the second reinforcing bar section 52 of acute angle setting with first reinforcing bar section 51, a plurality of push type reinforcing bar 5 anchors at the prefabricated decking 2 lateral parts of second, 1 lateral part of first prefabricated decking is provided with the preformed hole 11 corresponding with push type reinforcing bar 5, behind reinforcing bar 5 pressed into preformed hole 11, treat to resume the shape after, second reinforcing bar section 52 and preformed hole 11's pore wall looks lock joint. Compared with the prior art, the connecting structure of the precast concrete bridge deck has the advantages that the preformed hole 11 and the pressing type reinforcing steel bar 5 are arranged to form a clamping structure, so that the first precast bridge deck 1 and the second precast bridge deck 2 are connected more firmly, the integrity of the bridge decks is improved, and meanwhile, the stress at seams can be relieved.
The connection structure of precast concrete decking that this embodiment provided still includes first reserved reinforcing bar 3, reinforcing bar 4 is reserved to the second, first reserved reinforcing bar 3 crosses 1 both sides of first precast decking, reinforcing bar 4 is reserved to the second crosses 2 both sides of precast decking of second, and first reserved reinforcing bar 3 and the 4 one-to-one of second reserved reinforcing bar, first reserved reinforcing bar 3 and the second reserved reinforcing bar 4 pass through reinforcing bar sleeve 31 rigid coupling, during concrete implementation, can wear to establish completely on first reserved reinforcing bar 3 or the second reserved reinforcing bar 4 with reinforcing bar sleeve 31 earlier, after first reserved reinforcing bar 3 and the butt joint of second reserved reinforcing bar 4, rethread rotating reinforcing bar sleeve 31, make reinforcing bar sleeve 31 arrange in simultaneously on first reserved reinforcing bar 3 and the second reserved reinforcing bar 4, in order to reach the purpose of connecting. The setting of steel sleeve 31 has avoided the welding, simultaneously, uses with preformed hole 11, the cooperation of push type reinforcing bar 5, and the effect is better, can greatly alleviate the stress of seam crossing.
In this embodiment, still include the mortar 6 that excels in, based on push type reinforcing bar 5 and preformed hole 11 butt joint, first preformed reinforcing bar 3 and the rigid coupling of second preformed reinforcing bar 4, the mortar 6 that excels in is filled in the clearance between first prefabricated decking 1 and the second prefabricated decking 2, makes it connect and forms a whole.
In this embodiment, first reservation reinforcing bar 3 passes preformed hole 11 center, and second reservation reinforcing bar 4 passes push type reinforcing bar 5 center, above-mentioned setting for in preformed hole 11 can be arranged in to reinforcing bar sleeve 31 part is originally, greatly reduces the clearance between first prefabricated decking 1 and the prefabricated decking of second 2, has reduced the area at weak position promptly, has improved the biography power performance of decking.
In this embodiment, the preformed hole 11 is gradually changed, the preformed hole 11 includes a first section hole 111 gradually decreased and a second section hole 112 gradually increased in a direction away from the second prefabricated bridge deck 2, the first section hole 111 is used for extruding the pressing type steel bar 5, and the second section hole 112 is used for clamping the pressing type steel bar 5.
In this embodiment, the second rebar segment 52 is positioned outwardly.
In this embodiment, for the second stability when reserving reinforcing bar 4 and push type reinforcing bar 5 and being connected, and avoid the local stress when welding, push type reinforcing bar 5 passes through 6 ligatures of steel wire and reserves reinforcing bar 4 lateral walls at the second, specifically, the second is reserved reinforcing bar 4 lateral walls and is provided with semicircular groove 41, and push type reinforcing bar 5 sets up in semicircular groove 41, has avoided push type reinforcing bar 5's circumference gun to move.
As a preferred embodiment, the first saw teeth 42 are arranged in the semicircular groove 41, the second saw teeth 53 are arranged on one side, attached to the semicircular groove 41, of the pressing type steel bar 5, the first saw teeth 42 are clamped with the second saw teeth 53, transverse sliding of the pressing type steel bar 5 is avoided, and connection is more stable.
The embodiment of the invention also provides a connecting method of the novel precast concrete bridge deck, which comprises the following steps:
step S1: manufacturing a first prefabricated bridge deck 1 with a first reserved steel bar 3 and a reserved hole 21 and a second prefabricated bridge deck 2 with a second reserved steel bar 4;
step S2: manufacturing a pressing type reinforcing steel bar 5, and anchoring the pressing type reinforcing steel bar 5 at the side part of the second prefabricated bridge deck 2;
step S3: pushing the pressing type steel bar 5 into the preformed hole 21;
step S4: fixedly connecting a first reserved steel bar 3 and a second reserved steel bar 4 through a steel bar sleeve 31;
step S5: and filling high-strength mortar 6 in a gap between the first prefabricated bridge deck 1 and the second prefabricated bridge deck 2.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (7)
1. A connecting structure of precast concrete deck boards, comprising: the prefabricated bridge deck comprises a first prefabricated bridge deck (1) and a second prefabricated bridge deck (2), and is characterized by further comprising pressing type reinforcing steel bars (5), wherein the pressing type reinforcing steel bars (5) comprise a plurality of first reinforcing steel bar sections (51) which are arranged in a conical shape and second reinforcing steel bar sections (52) which are arranged at acute angles with the first reinforcing steel bar sections (51), the pressing type reinforcing steel bars (5) are anchored at the side parts of the second prefabricated bridge deck (2), reserved holes (11) corresponding to the pressing type reinforcing steel bars (5) are formed in the side parts of the first prefabricated bridge deck (1), the pressing type reinforcing steel bars (5) are pressed into the reserved holes (11), and after the shape is recovered, the second reinforcing steel bar sections (52) are fastened with the hole walls of the reserved holes (11); the prefabricated bridge deck is characterized by further comprising first reserved steel bars (3) and second reserved steel bars (4), wherein the first reserved steel bars (3) cross two sides of the first prefabricated bridge deck (1), the second reserved steel bars (4) cross two sides of the second prefabricated bridge deck (2), the first reserved steel bars (3) correspond to the second reserved steel bars (4) one by one, and the first reserved steel bars (3) are fixedly connected with the second reserved steel bars (4) through steel bar sleeves (31); the first reserved steel bar (3) penetrates through the center of the reserved hole (11), and the second reserved steel bar (4) penetrates through the center of the pressing type steel bar (5) in the length direction; and the pressing type reinforcing steel bars (5) are bound on the side wall of the second reserved reinforcing steel bar (4) through steel wires (6).
2. The connecting structure of precast concrete bridge deck according to claim 1, further comprising high strength mortar (6), wherein the first reserved steel bar (3) and the second reserved steel bar (4) are fixedly connected based on the butt joint of the pressing type steel bar (5) and the reserved hole (11), and the high strength mortar (6) is filled in a gap between the first precast bridge deck (1) and the second precast bridge deck (2).
3. The connecting structure of the precast concrete bridge deck according to claim 1, wherein the preformed hole (11) is gradually changed, the direction of the preformed hole (11) away from the second precast bridge deck (2) comprises a first section of hole body (111) which is gradually changed to be smaller and a second section of hole body (112) which is gradually changed to be larger, the first section of hole body (111) is used for extruding the pressing type reinforcing steel bar (5), and the second section of hole body (112) is used for clamping the pressing type reinforcing steel bar (5).
4. The precast concrete bridge deck connection structure according to claim 1, wherein the second reinforcing bar segment (52) is outwardly disposed.
5. The precast concrete bridge deck connection structure according to claim 1, wherein the second precast reinforcing bars (4) are provided at side walls thereof with semicircular grooves (41), and the pressing type reinforcing bars (5) are provided in the semicircular grooves (41).
6. The precast concrete bridge deck connection structure according to claim 5, wherein first serrations (42) are provided in the semicircular groove (41), second serrations (53) are provided on one side of the pressing type reinforcing bars (5) contacting the semicircular groove (41), and the first serrations (42) and the second serrations (53) are engaged with each other.
7. The precast concrete bridge deck connection structure according to claim 1, wherein the connection method of the connection structure comprises the steps of:
step S1: manufacturing a first prefabricated bridge deck (1) with a first reserved steel bar (3) and a reserved hole (21) and a second prefabricated bridge deck (2) with a second reserved steel bar (4);
step S2: manufacturing a pressing type reinforcing steel bar (5), and anchoring the pressing type reinforcing steel bar (5) at the side part of the second prefabricated bridge deck (2);
step S3: pushing the pressing type reinforcing steel bar (5) into the preformed hole (21);
step S4: fixedly connecting a first reserved steel bar (3) and a second reserved steel bar (4) through a steel bar sleeve (31);
step S5: and filling high-strength mortar (6) in a gap between the first prefabricated bridge deck (1) and the second prefabricated bridge deck (2).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910561752.8A CN110172910B (en) | 2019-06-26 | 2019-06-26 | Connecting structure and connecting method of precast concrete bridge deck |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910561752.8A CN110172910B (en) | 2019-06-26 | 2019-06-26 | Connecting structure and connecting method of precast concrete bridge deck |
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| CN110172910A CN110172910A (en) | 2019-08-27 |
| CN110172910B true CN110172910B (en) | 2020-10-20 |
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| CN113565005B (en) * | 2021-07-16 | 2022-12-13 | 苏交科集团股份有限公司 | Prefabricated assembled bridge structure with assembled corrugated steel web cantilever and construction method |
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| KR20140038010A (en) * | 2012-09-19 | 2014-03-28 | 삼표건설 주식회사 | Fabricating apparatus and method for precast concrete members |
| JP2016056514A (en) * | 2014-09-05 | 2016-04-21 | ジオスター株式会社 | Joint structure for precast member |
| JP2018076728A (en) * | 2016-11-11 | 2018-05-17 | 川田建設株式会社 | Highly durable floor slab having highly rust preventive joint structure |
| CN208668273U (en) * | 2018-05-28 | 2019-03-29 | 中铁第四勘察设计院集团有限公司 | Combine the anchor connection structure of formed precast concrete floorings |
| CN210288112U (en) * | 2019-06-26 | 2020-04-10 | 景洪市橄榄坝至景哈乡澜沧江大桥建设指挥部 | Prefabricated bridge deck composite beam connected by pressing type steel bars |
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2019
- 2019-06-26 CN CN201910561752.8A patent/CN110172910B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20140038010A (en) * | 2012-09-19 | 2014-03-28 | 삼표건설 주식회사 | Fabricating apparatus and method for precast concrete members |
| JP2016056514A (en) * | 2014-09-05 | 2016-04-21 | ジオスター株式会社 | Joint structure for precast member |
| JP2018076728A (en) * | 2016-11-11 | 2018-05-17 | 川田建設株式会社 | Highly durable floor slab having highly rust preventive joint structure |
| CN208668273U (en) * | 2018-05-28 | 2019-03-29 | 中铁第四勘察设计院集团有限公司 | Combine the anchor connection structure of formed precast concrete floorings |
| CN210288112U (en) * | 2019-06-26 | 2020-04-10 | 景洪市橄榄坝至景哈乡澜沧江大桥建设指挥部 | Prefabricated bridge deck composite beam connected by pressing type steel bars |
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