CN113202021B - Method for erecting track for paving ultrahigh-performance concrete on bridge steel bridge deck - Google Patents
Method for erecting track for paving ultrahigh-performance concrete on bridge steel bridge deck Download PDFInfo
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- CN113202021B CN113202021B CN202110416098.9A CN202110416098A CN113202021B CN 113202021 B CN113202021 B CN 113202021B CN 202110416098 A CN202110416098 A CN 202110416098A CN 113202021 B CN113202021 B CN 113202021B
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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
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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
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
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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
- E01D2101/00—Material constitution of bridges
- E01D2101/30—Metal
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
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- Bridges Or Land Bridges (AREA)
- Road Paving Machines (AREA)
Abstract
The invention relates to a method for erecting a track for paving ultrahigh-performance concrete on a bridge steel bridge deck, wherein support brackets are respectively erected on the inner sides of steel curbs on the two sides of the bridge steel bridge deck, the support brackets are supported on a steel bridge deck and the steel curbs of the bridge steel bridge deck, a track is erected on the support brackets, and the track is positioned on the inner sides of the steel curbs and is arranged along the bridge direction of the bridge steel bridge deck; the track can be provided with the ultra-high performance concrete pavement equipment and the ultra-high performance concrete pavement equipment can run along the track. The invention has the advantages that: the existing steel curb and the detachable square steel pipe are used as stress supporting points for supporting the bracket erecting track, so that the construction space under the bridge is not occupied, the overall structure is simple, the manufacturing is convenient, and the detachment is convenient; after the steel support is disassembled, the leveling machine, the film laminating machine and the like can still pass through; the construction method can avoid setting longer construction joints when the ultrahigh-performance concrete of the existing bridge deck is constructed, and greatly reduces the condition that the steel bridge deck is damaged by water seepage of the construction joints.
Description
Technical Field
The invention relates to the technical field of bridge deck concrete pavement, in particular to a track erection method for ultrahigh-performance concrete pavement of a bridge steel bridge deck.
Background
At present, due to the defects of low tensile strength, poor toughness, incapability of effectively controlling crack development after cracking and the like of common concrete, the premature deterioration of a concrete structure can not be used continuously, and the durability and the service life of the concrete structure are greatly reduced. In order to overcome these disadvantages of concrete, ultra High Performance Concrete (UHPC), which is a cement-based material, is proposed for application in concrete by systematic design, optimization and adjustment of the material system using particle tight packing theory, fracture mechanics and micro mechanics principles, and addition of 1-3 volume fraction of fibers. The ultra-high performance concrete can obviously improve the tensile capacity and the shear resistance of the concrete, so the ultra-high performance concrete has good toughness, can effectively control the development of the concrete, and is gradually applied to actual engineering.
The ultrahigh-performance concrete has high strength and good expansibility, but is usually relatively viscous and contains steel fibers, so that a paving operation mode mainly using manpower is not suitable for being adopted during the paving operation of the bridge deck, the traditional pavement paving equipment needs to be modified and then can be used, and special equipment is usually adopted for paving.
The UHPC reinforced active steel bridge deck is characterized in that a thin high-performance concrete layer is poured on a steel box girder top plate, and the concrete layer and a steel plate are effectively and rigidly connected together through densely distributed shear nails and reinforcing meshes to form a steel-UHPC combined structure. However, a series of construction key problems also exist in the actual construction process of bridge deck pavement of an active bridge, and one of the important problems is the support problem of the special pavement equipment for the ultra-high performance concrete. When the bridge deck is paved, a paving operation mode mainly using manpower is not suitable, and special equipment is usually adopted for paving. The prevailing paving equipment special for UHPC in the market mainly comprises a special UHPC material distributor, a special UHPC evener, a special UHPC film laminating machine and the like. When the special UHPC paving equipment is used, a guide rail needs to be erected on a bridge deck to serve as a special UHPC paving equipment supporting device. When the pavement of the bridge deck of the existing bridge is implemented, usually, due to the steel curb of the bridge deck of the existing bridge, the guide rails of the UHPC special pavement equipment cannot be laid at the two ends of the bridge deck. This probably leads to when the bridge floor both sides pave ultra high performance concrete, the cloth machine can not fill the distributing material, and the evener can not fully be leveled to and the condition that the membrane machine of spreading can not the comprehensive tectorial membrane takes place. In this case, joint-separating construction is generally adopted in the construction, that is, the steel guide rail is laid on the inner side of the steel curb of the active bridge to perform UHPC mechanical paving, and a construction joint is arranged, and then the steel guide rail and the equipment are removed to perform manual paving construction on two sides. The construction method is common, but the construction seams with longer two sides can possibly cause water seepage, so that the steel bridge deck is damaged.
Because the ultra-high performance concrete is gradually applied to actual engineering in recent years, including the reinforcement and repair of active bridges, the ultra-high performance concrete paving construction process and equipment suitable for the special situation need to be improved and optimized.
Disclosure of Invention
The invention aims to provide a track erection method for paving ultra-high performance concrete on a bridge steel bridge deck according to the defects of the prior art, which changes the track arrangement mode used by an ultra-high performance concrete spreader through the design of a support bracket, avoids the generation of construction joints caused by the influence of steel curbs, and realizes the high-quality and high-precision pavement of the ultra-high performance concrete on the bridge steel bridge deck.
The purpose of the invention is realized by the following technical scheme:
the utility model provides a bridge steel bridge face ultra high performance concrete pavement is with track erection method for the bridge steel bridge face that both sides have the steel curb paves of ultra high performance concrete, its characterized in that: the erection method comprises the following steps: erecting support brackets on the inner sides of the steel kerbs on two sides of the bridge steel deck respectively, wherein the support brackets are supported on the steel deck slab of the bridge steel deck and the steel kerbs, and erecting tracks on the support brackets, which are positioned on the inner sides of the steel kerbs and arranged along the bridge direction of the bridge steel deck; the track can be provided with ultra-high performance concrete pavement equipment and the ultra-high performance concrete pavement equipment can run along the track.
The supporting brackets are arranged on the bridge steel deck at even intervals along the paving direction of the ultrahigh-performance concrete paving equipment.
The support bracket comprises a track beam, a steel support and a steel base plate; erecting one end of the track cross beam above the steel curb, extending the other end of the track cross beam to the inner side of the steel curb, arranging the steel support below the track cross beam positioned at the inner side of the steel curb, and fixing the steel support on the steel bridge deck; erecting the rail on the rail cross beam positioned on the inner side of the steel curb.
And pressing plates are arranged on two sides of the track and are fixedly connected with the track cross beam.
Connecting and fixing the track cross beam and the steel curb through spot welding; and connecting and fixing the track cross beam and the steel support through spot welding.
And the lower end of the steel support is sealed by adopting a steel base plate.
The ultrahigh-performance concrete paving equipment comprises one or a combination of two or more of an ultrahigh-performance concrete spreader, an ultrahigh-performance concrete leveler, an ultrahigh-performance concrete film laminator and an ultrahigh-performance concrete troweling machine, or paving equipment integrated with functions of leveling, film laminating and troweling, wherein the steel support for supporting the bracket is detached after the ultrahigh-performance concrete spreader finishes spreading.
The invention has the advantages that: the existing steel curb and the detachable square steel pipe are used as stress supporting points for supporting the bracket erecting track, so that the construction space under the bridge is not occupied, the overall structure is simple, the manufacturing is convenient, and the detachment is convenient; after the steel support is disassembled, the leveling machine, the film laminating machine and the like can still pass through; when the ultrahigh-performance concrete construction of the existing bridge deck is carried out, longer construction joints can be avoided, and the condition that the steel bridge deck is damaged by water seepage of the construction joints is greatly reduced; the method is beneficial to saving materials, shortening the construction period and saving the cost, and is suitable for the field of ultra-high performance concrete construction.
Drawings
FIG. 1 is a floor plan of the present invention;
fig. 2 is a schematic structural view of the track frame of the present invention.
Detailed Description
The features of the present invention and other related features are described in further detail below by way of example in conjunction with the following drawings to facilitate understanding by those skilled in the art:
as shown in fig. 1-2, the symbols 1-19 in the figures are respectively expressed as: the concrete spreading machine comprises a support bracket 1, a track 2, an ultra-high performance concrete spreader 3, an ultra-high performance concrete evener 4, an ultra-high performance concrete film coater 5, an ultra-high performance concrete spreader 6, a steel curb 7, a steel plate 8, a reinforcing mesh and stud 9, a concrete mixer truck 10, a concrete pump truck 11, a spreader hopper 12, an UHPC (ultra high performance concrete) spreading layer 13, a track cross beam 14, a steel bridge deck 15, a steel support 16, a steel base plate 17, a pressing plate 18 and a welding spot 19.
Example (b): as shown in fig. 1 and 2, the track erecting method for the ultra high performance concrete pavement of the bridge steel deck in the present embodiment is used for laying Ultra High Performance Concrete (UHPC) on the bridge steel deck. A steel bar mesh and studs 9 are arranged on the bridge steel bridge surface, and the studs are arranged on the steel bridge deck 15 and are connected and fixed with the steel bar mesh; the studs acting as shear pins in combination with the mesh reinforcement effectively join the ultra high performance concrete to the steel deck 15 to form a steel-UHPC composite structure.
As shown in fig. 1 and 2, the paving method in this embodiment includes the following steps:
1) Firstly, a track 2 arranged along the bridge direction is erected on the steel bridge deck 15, and the track 2 is used as a running track of the ultrahigh-performance concrete spreader 3, so that the ultrahigh-performance concrete spreader 3 can run along the bridge direction, and the distribution of the ultrahigh-performance concrete is realized.
As shown in fig. 1, the track 2 is erected by the support brackets 1 erected on both sides of the steel deck 15, and the support brackets 1 are uniformly spaced along the bridge steel deck along the bridge direction. As shown in fig. 2, the main body of the support bracket 1 includes a track beam 14 and a steel support 16. One end of the track cross beam 14 is supported on the steel curb 7 and is welded and fixed with the steel curb by a welding point 19; the other end of the steel plate extends towards the inner side of the steel curb 7, a steel support 16 is arranged below the extending end of the track beam 14, the top end of the steel support 16 is welded and fixed with the steel curb 7, and the bottom end of the steel support is supported on a steel bridge deck 15 through a steel backing plate 17. The rail 2 is mounted on the rail cross member 14, and pressing plates 18 are respectively provided on both sides of the rail 2 to ensure stability of the rail 2.
2) An ultra-high performance concrete spreader 3 is erected between the two side rails 2, and the ultra-high performance concrete spreader 3 is carried on and travels along the rails 2.
In the embodiment, a concrete pumping device may be disposed in front of the ultra-high performance concrete distributor 3 in the paving direction, and the device includes a concrete mixer truck 10 and a concrete pump truck 11, wherein the concrete mixer truck 10 is used for storing the ultra-high performance concrete and maintaining the performance of the ultra-high performance concrete through stirring, and the concrete pump truck 10 pumps the ultra-high performance concrete to a distributor hopper 12 of the ultra-high performance concrete distributor 3 through a pipeline to realize synchronous feeding. In order to prevent the concrete mixer truck 10 and the concrete pump truck 11 from damaging the underlying mesh reinforcement and the stud 9 during driving, a steel plate 8 is laid in the area where the truck is driving to protect the mesh reinforcement and the stud 9.
3) And starting the ultrahigh-performance concrete distributing machine 3 to distribute the ultrahigh-performance concrete on the steel bridge deck 15. At the moment, because the supporting brackets 1 are arranged at intervals along the bridge direction, when the ultra-high performance concrete spreader 3 running on the track 2 spreads the materials, the ultra-high performance concrete can pass through gaps among the supporting brackets 1, so that the full-section pavement and pouring of the steel bridge deck 15 are realized, a post-pouring belt is not reserved, and the risk is avoided.
And then, removing the steel supports 16 of the support bracket 1, and erecting an ultrahigh-performance concrete leveling machine 4, an ultrahigh-performance concrete film coating machine 5 and an ultrahigh-performance concrete troweling machine 6 for paving the ultrahigh-performance concrete on the track 2 so as to perform operations of leveling, spray film coating maintenance, troweling and the like on the distributed UHPC paving layer 13, so that the distribution quality of the ultrahigh-performance concrete is improved.
In the embodiment, in specific implementation: after the ultra-high performance concrete spreader 3 finishes horizontal cloth one, it is along vertical (following the bridge to) walking, and the walking distance is the width of horizontal cloth one, and the steel shotcrete 16 under the track crossbeam 14 of spreader position below before the manual work was demolishd this moment uses ultra-high performance concrete spreader 4 to carry out the flattening to the cloth region afterwards, and ultra-high performance concrete spreader 4 chooses for use self-propelled high frequency low-amplitude flat vibrator, and the leveler is vertical to be walked. Since the steel struts 16 below the track beams 14 have been removed, the screed panel width of the ultra high performance concrete screed 4 may extend to the inside of the steel curb of the paved surface, the same as the bridge deck pavement width, achieving leveling along the transverse full bridge deck.
Although the conception and the embodiments of the present invention have been described in detail with reference to the drawings, those skilled in the art will recognize that various changes and modifications can be made therein without departing from the scope of the appended claims, and therefore, the description is not necessary here.
Claims (5)
1. The utility model provides a bridge steel bridge face ultra high performance concrete pavement is with track erection method for the bridge steel bridge face that both sides have the steel curb paves of ultra high performance concrete, its characterized in that: the erection method comprises the following steps: erecting support brackets on the inner sides of the steel kerbs on two sides of the bridge steel deck respectively, wherein the support brackets are supported on a steel bridge deck of the bridge steel deck and the steel kerbs, and erecting tracks on the support brackets, which are positioned on the inner sides of the steel kerbs and arranged along the bridge direction of the bridge steel deck; the track can be provided with ultra-high performance concrete pavement equipment and the ultra-high performance concrete pavement equipment can run along the track; the supporting brackets are uniformly arranged on the bridge steel deck at intervals along the laying direction of the ultrahigh-performance concrete laying equipment;
the support bracket comprises a track beam, a steel support and a steel base plate; erecting one end of the track cross beam above the steel curb, extending the other end of the track cross beam to the inner side of the steel curb, arranging the steel support below the track cross beam positioned at the inner side of the steel curb, and fixing the steel support on the steel bridge deck; erecting the rail on the rail cross beam positioned on the inner side of the steel curb.
2. The method for erecting the track for paving the ultra-high performance concrete with the bridge steel deck according to the claim 1, is characterized in that: and pressing plates are arranged on two sides of the track and are fixedly connected with the track beam.
3. The method for erecting the track for paving the ultra-high-performance concrete on the bridge steel bridge deck according to the claim 1, wherein the method comprises the following steps: connecting and fixing the track cross beam and the steel curb through spot welding; and connecting and fixing the track cross beam and the steel support through spot welding.
4. The method for erecting the track for paving the ultra-high performance concrete with the bridge steel deck according to the claim 1, is characterized in that: and the lower end of the steel support is sealed by adopting a steel base plate.
5. The method for erecting the track for paving the ultra-high performance concrete with the bridge steel deck according to the claim 1, is characterized in that: the ultrahigh-performance concrete paving equipment comprises one or a combination of two or more of an ultrahigh-performance concrete spreader, an ultrahigh-performance concrete leveler, an ultrahigh-performance concrete film laminator and an ultrahigh-performance concrete troweling machine, or paving equipment integrated with functions of leveling, film laminating and troweling, wherein the steel support for supporting the bracket is detached after the ultrahigh-performance concrete spreader finishes spreading.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110416098.9A CN113202021B (en) | 2021-04-19 | 2021-04-19 | Method for erecting track for paving ultrahigh-performance concrete on bridge steel bridge deck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110416098.9A CN113202021B (en) | 2021-04-19 | 2021-04-19 | Method for erecting track for paving ultrahigh-performance concrete on bridge steel bridge deck |
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| CN113202021A CN113202021A (en) | 2021-08-03 |
| CN113202021B true CN113202021B (en) | 2023-03-28 |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8956075B1 (en) * | 2013-11-04 | 2015-02-17 | Patrick Shawn Free | Tunnel mold, system and method for slip forming reinforced concrete structures with exposed rebars |
| CN210238240U (en) * | 2019-03-20 | 2020-04-03 | 上海城建市政工程（集团）有限公司 | Automatic film-covering maintenance equipment for paving ultrahigh-performance concrete |
| CN111074787A (en) * | 2020-01-21 | 2020-04-28 | 上海城建市政工程（集团）有限公司 | Ultrahigh-performance concrete distributing device and application method thereof |
| CN112144352A (en) * | 2020-10-27 | 2020-12-29 | 上海城建市政工程（集团）有限公司 | Leveling machine for leveling ultrahigh-performance concrete and application method thereof |
| CN112301845A (en) * | 2020-11-13 | 2021-02-02 | 唐山市星斗路桥机械有限公司 | Ultrahigh-performance concrete paving integrated machine |
| CN112458840B (en) * | 2020-11-13 | 2022-07-12 | 唐山市星斗路桥机械有限公司 | Integrated construction process for ultra-high performance concrete |
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