CN113174798A - Take assembled cement concrete shop front structure of prestressing force - Google Patents
Take assembled cement concrete shop front structure of prestressing force Download PDFInfo
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- CN113174798A CN113174798A CN202110416345.5A CN202110416345A CN113174798A CN 113174798 A CN113174798 A CN 113174798A CN 202110416345 A CN202110416345 A CN 202110416345A CN 113174798 A CN113174798 A CN 113174798A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C5/00—Pavings made of prefabricated single units
- E01C5/06—Pavings made of prefabricated single units made of units with cement or like binders
- E01C5/08—Reinforced units with steel frames
- E01C5/10—Prestressed reinforced units ; Prestressed coverings from reinforced or non-reinforced units
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Abstract
The fabricated cement concrete pavement structure with prestress comprises a first concrete plate and a concrete plate component which are sequentially connected, wherein the first concrete plate and the concrete plate component are arranged at intervals, and a plurality of prestressed pore passages are formed in the first concrete plate and the concrete plate component; the top end of the first concrete slab is fixedly connected with a plurality of first anchorage devices and a plurality of second anchorage devices respectively, the first anchorage devices and the second anchorage devices are positioned on two sides of the first concrete slab respectively, first reinforcing steel bars are arranged between the first anchorage devices and the second anchorage devices on the adjacent first concrete slabs, two ends of each first reinforcing steel bar are fixedly connected with the first anchorage devices and the second anchorage devices respectively, and second reinforcing steel bars are arranged between the second anchorage devices and the first anchorage devices on the adjacent other first concrete slabs. The method can reduce the step of applying prestress to the tensioning steel bar, improve the construction efficiency, improve the connection relation between two adjacent prefabricated road boards and reduce the possibility of dislocation of the two adjacent prefabricated road boards.
Description
Technical Field
The invention relates to the technical field of road engineering, in particular to an assembled cement concrete pavement structure with prestress.
Background
Along with the development of social economy, the traffic volume is larger and larger, the requirements on a traffic network are higher and higher, particularly in economically developed areas, the speed requirement on road construction is higher, and the assembled pavement is installed on site through factory prefabricated road boards so as to quickly finish the road construction work.
However, because the prefabricated road slabs are independent from each other, the prefabricated road slabs need to be combined in a lap joint or embedding mode in the field installation process, and grouting fixation and other operations are performed after the combination is completed, however, the above combination mode has the problems of poor load transfer capability among the prefabricated road slabs, easy cracks on the road surface and the like, and although the prefabricated road slabs transfer force through a force transfer mechanism such as a force transfer rod in the prior art, the force transfer effect is still unsatisfactory, therefore, on the basis, tensioning steel bars are usually adopted to apply prestress to enable a tension area of the road surface to bear compressive stress in advance so as to counteract a part of tensile stress generated by the change of vehicle load and temperature, so that the tensile strength among the prefabricated road slabs is improved, and further the bending tensile strength of the road surface is improved, however, the existing step of applying prestress through the tensioning steel bars is complicated, so that the construction efficiency is reduced, meanwhile, the longitudinal prestress can be only applied through the tension steel bars, and a good solution is not provided for the transverse load generated by turning or turning of the vehicle, so that the phenomenon of dislocation of two adjacent prefabricated road boards is caused.
Disclosure of Invention
The invention aims to provide an assembly type cement concrete pavement structure with prestress, which solves the problems in the prior art, can reduce the step of applying prestress by tensioning steel bars, improves the construction efficiency, improves the connection relation between two adjacent prefabricated road boards, and reduces the possibility of dislocation of the two adjacent prefabricated road boards.
In order to achieve the purpose, the invention provides the following scheme: the fabricated cement concrete pavement structure with prestress comprises a first concrete plate and a concrete plate component which are sequentially connected, wherein the first concrete plate and the concrete plate component are arranged at intervals, and a plurality of prestressed pore paths are respectively formed in the first concrete plate and the concrete plate component;
a plurality of first anchors and a plurality of second anchors are fixedly connected to the top ends of the first concrete slabs respectively, the first anchors and the second anchors are located on two sides of the first concrete slabs respectively, first reinforcing steel bars are arranged between the first anchors and the second anchors on the adjacent first concrete slabs, two ends of each first reinforcing steel bar are fixedly connected with the first anchors and the second anchors respectively, second reinforcing steel bars are arranged between the second anchors and the first anchors on the adjacent other first concrete slabs, two ends of each second reinforcing steel bar are fixedly connected with the second anchors and the first anchors respectively, and the first reinforcing steel bars and the second reinforcing steel bars are located in the prestressed pore canals; and a locking piece is arranged on the side surface of the first concrete plate along the extension direction of the first steel bar or the second steel bar, and the first concrete plate is clamped with the other adjacent first concrete plate through the locking piece.
Preferably, the first reinforcing steel bars and the second reinforcing steel bars are arranged at equal intervals.
Preferably, the locking piece comprises a connecting steel bar, the connecting steel bar is fixedly connected with the first concrete plate, a groove is formed in one side, away from the connecting steel bar, of the first concrete plate, the connecting steel bar is arranged corresponding to the groove, and the groove is communicated with the bottom end of the first concrete plate.
Preferably, the connecting steel bar is fixedly connected with a thread.
Preferably, a grouting opening is formed in the top end of the first concrete plate, and the grouting opening is communicated with the groove.
Preferably, the prestressed duct formed by the cooperation of two adjacent first concrete plates and the concrete plate assembly between two adjacent first concrete plates is of a U-shaped structure.
Preferably, the concrete plate assembly comprises a plurality of second concrete plates which are the same as the first concrete plate structure, and the number of the second concrete plates is not more than 10.
The invention discloses the following technical effects:
the invention provides an assembled cement concrete pavement structure with prestress, which is characterized in that prestressed pore canals are respectively arranged in a first concrete plate and a concrete plate component through the interval arrangement of the first concrete plate and the concrete plate component, first reinforcing steel bars and second reinforcing steel bars are arranged in the prestressed pore canals in a penetrating way, the first concrete plate is used as a connecting plate to connect the adjacent concrete plate components, the prestressing force is provided for the first concrete plate, the concrete plate components and the concrete plate components per se, the laying is convenient, the construction steps are reduced, meanwhile, the firmness of the connection between the first concrete plate adjacent side by side and the concrete plate components adjacent side by side is improved through arranging locking pieces on a road with frequent vehicle turning or turning, and the transverse acting force generated on the adjacent first concrete plate and the concrete plate components because the vehicle turns or turns, the locking piece connects the first concrete plates or the first concrete plate assemblies which are arranged side by side into a whole, so that the possibility of dislocation is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described 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 without inventive exercise.
FIG. 1 is a perspective view of a pre-stressed fabricated concrete pavement structure;
FIG. 2 is a top plan view of a pre-stressed fabricated cement concrete deck construction;
FIG. 3 is a perspective view of the connecting reinforcement;
FIG. 4 is a perspective view of a groove;
FIG. 5 is a schematic structural view of a pre-stressed fabricated cement concrete pavement structure;
the concrete slab comprises 1-a first concrete slab, 2-a prestressed duct, 3-a first anchor, 31-a first steel bar, 4-a second anchor, 41-a second steel bar, 5-a connecting steel bar, 6-a groove, 7-a thread, 8-a grouting opening, 9-a storage tank and 10-a second concrete slab.
Detailed Description
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 only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
The invention provides an assembled cement concrete pavement structure with prestress, which comprises a first concrete plate 1 and a concrete plate component which are sequentially connected, wherein the first concrete plate 1 and the concrete plate component are arranged at intervals, and a plurality of prestress pore passages 2 are respectively arranged in the first concrete plate 1 and the concrete plate component; a plurality of first anchors 3 and a plurality of second anchors 4 are fixedly connected to the top end of the first concrete slab 1 respectively, the first anchors 3 and the second anchors 4 are located on two sides of the first concrete slab 1 respectively, first reinforcing steel bars 31 are arranged between the first anchors 3 and the second anchors 4 adjacent to the first concrete slab 1, two ends of each first reinforcing steel bar 31 are fixedly connected to the first anchors 3 and the second anchors 4 respectively, a second reinforcing steel bar 41 is arranged between the second anchors 4 and the first anchors 3 adjacent to the other first concrete slab 1, two ends of each second reinforcing steel bar 41 are fixedly connected to the second anchors 4 and the first anchors 3 respectively, and the first reinforcing steel bars 31 and the second reinforcing steel bars 41 are located in the prestressed hole passages 2; the first concrete plate 1 is provided with a locking piece on the side surface along the extending direction of the first reinforcing steel bar 31 or the second reinforcing steel bar 41, and the first concrete plate 1 is clamped with the other adjacent first concrete plate 1 through the locking piece.
A plurality of storage grooves 9 are formed in the top end of the first concrete plate 1, and the first anchorage device 3 and the second anchorage device 4 are located in the storage grooves 9. The first anchorage device 3 and the second anchorage device 4 are both arranged at the top end of the first concrete slab 1, the first anchorage device 3 and the second anchorage device 4 are positioned in the storage groove 9, so that the subsequent filling treatment of the first concrete slab 1 is convenient, when the first anchorage device 3 and the second anchorage device 4 are laid, the first concrete slab 1, the concrete slab assembly and the first concrete slab 1 are sequentially laid and spliced, the prestressed pore canals 2 of the first concrete slab 1, the concrete slab assembly and the first concrete slab 1 are aligned, if the first anchorage device 3 is positioned at the leftmost side of the top end of the first concrete slab 1, the second anchorage device 4 is positioned at the rightmost side of the top end of the first concrete slab 1, the first steel bar 31 is penetrated into the prestressed pore canal 2, the two ends of the first steel bar 31 are respectively tensioned and fixedly connected with the leftmost first anchorage device 3 of the first concrete slab 1 and the rightmost anchorage device 4 of the adjacent first concrete slab 1, then the second steel bar 41 is penetrated into the prestressed pore canal 2, and the two ends of the second steel bar 41 are respectively connected with the rightmost anchorage device 4 of the first concrete slab 1 and the other adjacent first concrete slab 1 The first anchorage device 3 on the leftmost side of the first concrete slab 1 is tensioned and fixedly connected, then the laying and splicing operation is carried out again, each first concrete slab 1 plays a connecting role, prestress can be provided for the first concrete slab 1 and the concrete slab assembly, meanwhile, construction steps are saved, and construction efficiency is improved.
Because the road is laid by a plurality of first concrete slabs 1 side by side, the existence of locking piece can make the first concrete slab 1 or concrete slab subassembly adjacent side by side connect as an organic whole, and the promotion of whole weight makes first concrete slab 1 or concrete slab subassembly be difficult for taking place to remove, because the vehicle turns or turns the lateral force that produces adjacent first concrete slab 1 and concrete slab subassembly offset, reduces the possibility of adjacent first concrete slab 1 and concrete slab subassembly dislocation.
Further, the first reinforcing bars 31 and the second reinforcing bars 41 are arranged at equal intervals. The first reinforcing bars 31 and the second reinforcing bars 41 can be arranged at intervals besides being arranged at equal intervals, so that the first anchorage devices 3 and the second anchorage devices 4 arranged on the top end of the same first concrete slab 1 are arranged at intervals, for example, the first anchorage devices 3 are positioned at the leftmost side of the top end of the first concrete slab 1, one second anchorage device 4 is arranged between two adjacent first anchorage devices 3, and the second anchorage device 4 is positioned at the rightmost side of the top end of the first concrete slab 1, so that the first concrete slab 1 is stressed uniformly, the stress strength of the single first anchorage devices 3 and the second anchorage devices 4 is lower, the pressure on the first concrete slab 1 is lower, and the first concrete slab 1 is not easy to damage.
Further, the locking piece includes connecting reinforcement 5, connecting reinforcement 5 with 1 rigid coupling of first concrete slab, first concrete slab 1 is kept away from connecting reinforcement 5's one side is seted up recess 6, connecting reinforcement 5 with recess 6 corresponds the setting, just recess 6 with 1 bottom intercommunication of first concrete slab. Connecting reinforcement 5 plays the connection effect, set up recess 6 in the one side of keeping away from connecting reinforcement 5, recess 6 is door type structure, connecting reinforcement 5 and door type structure all can be prefabricated in the mill with first concrete slab 1, and transport and be under construction to the place of construction, when laying first concrete slab 1 side by side, only need aim at connecting reinforcement 5 on the adjacent first concrete slab 1 with the recess 6 of the first concrete slab 1 that has hoisted, the first concrete slab 1 of whereabouts, make connecting reinforcement 5 be located in recess 6 can, the construction is simple swift, and the practicality is high.
Furthermore, a thread 7 is fixedly connected to the connecting steel bar 5. The screw thread 7 improves the firmness of the connection between the first concrete plates 1 adjacent side by side, and the screw thread 7 can increase the contact area with slurry in the subsequent grouting operation, so that the stability of the connection between the two first concrete plates 1 adjacent side by side is improved.
Further, a grouting opening 8 is formed in the top end of the first concrete plate 1, and the grouting opening 8 is communicated with the groove 6. The grouting opening 8 is used for grouting operation, after the first concrete plate 1 and the concrete assembly are subjected to prestress application, grouting is carried out through the grouting opening 8, and slurry enters a gap between the first concrete plate 1 and the concrete assembly and a gap between the two first concrete plates 1 arranged in parallel, namely the groove 6, so that the first concrete plate 1 and the concrete assembly and the two first concrete plates 1 arranged in parallel are fixed.
Further, the prestressed duct 2 formed by the cooperation of two adjacent first concrete plates 1 and the concrete plate assembly between two adjacent first concrete plates 1 is of a U-shaped structure. The U-shaped structure facilitates the penetration of the first reinforcing steel bars 31 and the second reinforcing steel bars 41, simultaneously improves the connection relation between the first concrete slab 1 and the concrete slab assembly, and ensures that the first anchorage device 3 and the second anchorage device 4 can be positioned on the top pavement of the first concrete slab 1, thereby facilitating the tensioning of the first reinforcing steel bars 31 and the second reinforcing steel bars 41 by construction personnel.
Further, the concrete plate assembly comprises a plurality of second concrete plates 10 which have the same structure as the first concrete plates 1, and the number of the second concrete plates 10 is not more than 10. The structure of the second concrete slab 10 is different from that of the first concrete slab 1 only in whether the first anchor 3 and the second anchor 4 are arranged on the top pavement, and in order to ensure that the prestress is effectively improved, the number of the second concrete slabs 10 is preferably not more than 10, the first concrete slab 1 and a plurality of second concrete slabs 10 are sequentially installed, the first concrete slab 1 is paved, and meanwhile, the subsequent operation of leveling the top pavement of the second concrete slab 10 is not needed because the first anchor 3 and the second anchor 4 do not need to be arranged on the second concrete slabs 10.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.
Claims (7)
1. The prefabricated cement concrete pavement structure with prestress is characterized by comprising a first concrete plate (1) and a concrete plate component which are sequentially connected, wherein the first concrete plate (1) and the concrete plate component are arranged at intervals, and a plurality of prestressed tunnels (2) are respectively formed in the first concrete plate (1) and the concrete plate component;
the top end of the first concrete slab (1) is respectively fixedly connected with a plurality of first anchorage devices (3) and a plurality of second anchorage devices (4), the first anchorage device (3) and the second anchorage device (4) are respectively positioned at two sides of the first concrete slab (1), a first steel bar (31) is arranged between the first anchorage device (3) and the second anchorage device (4) on the adjacent first concrete slab (1), two ends of the first steel bar (31) are respectively fixedly connected with the first anchorage device (3) and the second anchorage device (4), a second steel bar (41) is arranged between the second anchorage device (4) and the first anchorage device (3) on the other adjacent first concrete slab (1), two ends of the second steel bar (41) are respectively fixedly connected with the second anchorage device (4) and the first anchorage device (3), the first reinforcement (31) and the second reinforcement (41) are both located within the pre-stressed duct (2); the side face of the first concrete plate (1) along the extending direction of the first steel bar (31) or the second steel bar (41) is provided with a locking piece, and the first concrete plate (1) is connected with the other adjacent first concrete plate (1) in a clamping mode through the locking piece.
2. The pre-stressed assembled cement concrete pavement structure of claim 1, wherein: the first reinforcing steel bars (31) and the second reinforcing steel bars (41) are arranged at equal intervals.
3. The pre-stressed assembled cement concrete pavement structure of claim 1, wherein: the locking piece includes connecting reinforcement (5), connecting reinforcement (5) with first concrete slab (1) rigid coupling, first concrete slab (1) is kept away from one side of connecting reinforcement (5) is seted up flutedly (6), connecting reinforcement (5) with recess (6) correspond the setting, just recess (6) with first concrete slab (1) bottom intercommunication.
4. The pre-stressed assembled cement concrete pavement structure of claim 3, wherein: and the connecting steel bar (5) is fixedly connected with a thread (7).
5. The pre-stressed assembled cement concrete pavement structure of claim 3, wherein: grout mouth (8) have been seted up on first concrete slab (1) top, grout mouth (8) with recess (6) intercommunication.
6. The pre-stressed assembled cement concrete pavement structure of claim 1, wherein: the prestressed duct (2) formed by matching two adjacent first concrete plates (1) and the concrete plate component between two adjacent first concrete plates (1) is of a U-shaped structure.
7. The pre-stressed assembled cement concrete pavement structure of claim 1, wherein: the concrete plate component comprises a plurality of second concrete plates which are the same as the first concrete plates (1) in structure, and the number of the second concrete plates is not more than 10.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110416345.5A CN113174798B (en) | 2021-04-19 | 2021-04-19 | Take assembled cement concrete shop front structure of prestressing force |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110416345.5A CN113174798B (en) | 2021-04-19 | 2021-04-19 | Take assembled cement concrete shop front structure of prestressing force |
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| CN113174798A true CN113174798A (en) | 2021-07-27 |
| CN113174798B CN113174798B (en) | 2022-11-01 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113584982A (en) * | 2021-08-25 | 2021-11-02 | 中冶南方城市建设工程技术有限公司 | Assembly type continuous reinforced concrete pavement and construction method thereof |
| CN113774746A (en) * | 2021-09-03 | 2021-12-10 | 福建省大地管桩有限公司 | Pretensioned prestressed concrete assembled pavement and preparation method thereof |
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| CN102535295A (en) * | 2012-03-21 | 2012-07-04 | 长安大学 | Fabricated prestressed heat-resistant cement concrete pavement and construction process thereof |
| CN204780504U (en) * | 2015-05-19 | 2015-11-18 | 山西省交通科学研究院 | Prefabricated cement concrete pavement of assembling |
| CN105332370A (en) * | 2015-10-29 | 2016-02-17 | 广东省基础工程集团有限公司 | Fabricated underground continuous wall unit and construction method thereof |
| CN105862538A (en) * | 2016-05-31 | 2016-08-17 | 沈阳建筑大学 | Assembling type inclined slow-adhesion pre-stressed concrete road surface structure |
| RU2017134252A3 (en) * | 2017-10-02 | 2019-04-02 | ||
| CN111794435A (en) * | 2020-07-06 | 2020-10-20 | 重庆中航新型材料科技有限公司 | Green assembled energy-saving panel wall system |
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2021
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102535295A (en) * | 2012-03-21 | 2012-07-04 | 长安大学 | Fabricated prestressed heat-resistant cement concrete pavement and construction process thereof |
| CN204780504U (en) * | 2015-05-19 | 2015-11-18 | 山西省交通科学研究院 | Prefabricated cement concrete pavement of assembling |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113584982A (en) * | 2021-08-25 | 2021-11-02 | 中冶南方城市建设工程技术有限公司 | Assembly type continuous reinforced concrete pavement and construction method thereof |
| CN113584982B (en) * | 2021-08-25 | 2022-11-11 | 中冶南方城市建设工程技术有限公司 | Assembly type continuous reinforced concrete pavement and construction method thereof |
| CN113774746A (en) * | 2021-09-03 | 2021-12-10 | 福建省大地管桩有限公司 | Pretensioned prestressed concrete assembled pavement and preparation method thereof |
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| CN113174798B (en) | 2022-11-01 |
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