CN215405391U - Prefabricated panel connection structure based on interconnection of micro-prestress single plates - Google Patents
Prefabricated panel connection structure based on interconnection of micro-prestress single plates Download PDFInfo
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- CN215405391U CN215405391U CN202121323885.0U CN202121323885U CN215405391U CN 215405391 U CN215405391 U CN 215405391U CN 202121323885 U CN202121323885 U CN 202121323885U CN 215405391 U CN215405391 U CN 215405391U
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Abstract
The utility model relates to a precast panel connecting structure based on interconnection of micro-prestressed single plates, which comprises a first precast plate and a second precast plate, wherein the first precast plate is provided with at least one reserved hole passage penetrating through the first precast plate, the second precast plate is provided with a reserved threaded hole, a first connecting steel bar is matched in the reserved hole passage of the first precast plate, one end of the first connecting steel bar, provided with a thread, penetrates through the reserved hole passage of the first precast plate and extends into a reserved threaded hole of the adjacent second precast plate to be fixedly connected with the second precast plate through the thread, a gap for grouting is arranged between the first connecting steel bar and the inner wall of the reserved hole passage of the first precast plate, and the first connecting steel bar is fixedly connected with the first precast plate through grout poured in the reserved hole passage of the first precast plate. The utility model has simple construction, short construction period, effectively reduced panel thickness under the same mechanical property condition, convenient panel transportation, hoisting and the like, and good force transmission and integrity among plates.
Description
Technical Field
The utility model belongs to an inter-plate connecting structure of an assembly type concrete panel, and particularly relates to a connecting structure of a prefabricated panel based on interconnection of micro-prestressed single plates.
Background
Today, the rapid development of economy, the automobile transportation, the sea transportation and the air transportation depend on the service capacity of roads, container yards and airports, are life lines of passenger transportation logistics, and once the life lines are cut off, the life lines can greatly influence economic activities. The assembly type technology has long-term development in the building industry due to short construction period and small influence on the surrounding environment, and is less applied in the adverse road industry, so that the problem of establishing a complete assembly type pavement quick-assembly quick-repair technical system is urgently needed to be solved. However, the assembled panel technology has not been developed sufficiently in the traffic industry because of the problems of overlarge self weight, difficult construction, poor pavement (road surface) flatness caused by connection between boards and the like.
The existing connection technology applied to the assembled concrete panels is mainly of a traditional flat pull rod type. This mode wide application is in cast-in-place cement concrete road surface, pre-buried traditional pull rod when prefabricating to stay the hidden notch to the curb side, direct vertical installation during the construction, this scheme technology is ripe, can effectively transmit the driving load between two panels, nevertheless because the prefabricated plate reinforcing bar stretches out the plate, the transportation is more troublesome, the notch slip casting is difficult to fill, it is pleasing to the eye to grout behind the board top notch, the cross-section weakens greatly, the easy wrong platform between the board, and the plate is from great, preparation, transportation, hoist and mount difficulty.
The application of prefabricated concrete panel technology in road engineering is subject to many limitations, the main reasons for which are two: firstly, the concrete precast slab is heavy in self weight and difficult to transport and hoist; secondly, the quality of site construction is not easy to master, and the requirement of the flatness of the pavement (road surface) is difficult to meet.
The size of the concrete precast slab is limited by various factors, and when the slab is too large and thick, the carrier cannot be transported, the hoisting is difficult, and the construction difficulty is high; when the plate is too small, the construction is complicated, the construction period is prolonged, and when the plate is too small, the joints are increased, and the flatness of the pavement (road surface) is poor.
Therefore, the popularization and application of the precast concrete panels need to reduce the plate thickness as much as possible under the condition of meeting the size of a carrier, so that the self weight of the panels is reduced, and meanwhile, the problems of height fluctuation and poor flatness between the panels are solved by starting from the connection mode between the precast panels.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provides a prefabricated panel connecting structure based on interconnection of micro-prestressed single plates, which is simple and convenient to construct, short in construction period, capable of effectively reducing the thickness of the panel under the same mechanical property condition, convenient to transport and hoist the panel and the like, and good in force transmission and integrity among plates.
The technical scheme of the utility model is realized as follows: the utility model discloses a connecting structure of a prefabricated panel based on interconnection of micro-prestressed single plates, which comprises a first prefabricated plate and a second prefabricated plate, the first precast slab is provided with at least one reserved hole passage penetrating through the first precast slab, the second precast slab is provided with a reserved threaded hole, the first connecting steel bars are matched in the reserved hole channels of the first precast slabs, one end of the first connecting reinforcing steel bar is provided with a screw thread, the end of the first connecting reinforcing steel bar provided with the screw thread passes through the reserved hole channel of the first precast slab and extends into the reserved screw thread hole of the adjacent second precast slab to be fixedly connected with the screw thread of the second precast slab, a gap for grouting is arranged between the first connecting steel bar and the inner wall of the reserved hole of the first precast slab, and fixedly connecting the first connecting steel bars with the first prefabricated plate through grout poured in the reserved hole of the first prefabricated plate.
And furthermore, at least one reserved hole penetrating through the second prefabricated plate is formed in the second prefabricated plate, the first prefabricated plate is provided with reserved threaded holes and corresponds to the reserved holes of the second prefabricated plate one to one, a second connecting steel bar is matched in the reserved hole of the second prefabricated plate, one end of the second connecting steel bar is provided with a thread, one end of the second connecting steel bar provided with the thread penetrates through the reserved hole of the second prefabricated plate and extends into the reserved threaded hole of the adjacent first prefabricated plate to be fixedly connected with the thread of the first prefabricated plate, a gap for grouting is formed between the second connecting steel bar and the inner wall of the reserved hole of the second prefabricated plate, and the second connecting steel bar is fixedly connected with the second prefabricated plate through grout poured in the reserved hole of the second prefabricated plate.
Furthermore, reserved hole channels and reserved threaded holes on the first prefabricated plate are arranged in a staggered mode at intervals; reserved hole channels and reserved threaded holes on the second prefabricated plate are also arranged in a staggered mode at intervals.
Furthermore, a sealing plug is fixed at one end of each reserved pore channel, which is far away from the corresponding reserved threaded hole.
Further, the sealing plug is a sealing nut, a reserved nut opening is formed in each reserved hole channel and one end, far away from the corresponding reserved threaded hole, of each reserved hole channel, and the sealing nut is fixed in the reserved nut opening through threads.
Further, the first precast slab and the second precast slab are precast concrete panels; the grout poured in each reserved pore channel is concrete.
The utility model has at least the following beneficial effects:
1. the micro-prestress single plate interconnection structure is characterized in that the middle part and the lower part of the plate thickness are connected in series, other openings (except a hoisting grouting hole) do not exist on the plate surface, and the panel is neat and attractive;
2. in the construction process, the micro-prestress is applied in a bolt fastening mode, so that the bending moment of the plate bottom is reduced, the dead weight of the plate thickness can be effectively reduced, and the prefabricated transportation cost is reduced;
3. after the precast concrete slabs are connected in series by the twisted steel, the slabs have good integrity and do not generate uneven settlement, so the precast concrete slabs have good pavement evenness;
4. the member of the utility model is simple to prefabricate, the construction is simple and convenient, the time limit for a project is shorter, suitable for the short-term rush-construction rush repair;
5. the utility model adopts micro-prestress tensioning equipment instead of post-tensioning prestress tensioning, and reduces the longer and fussy construction procedure of post-tensioning equipment construction on the premise of meeting the requirement of reducing the plate thickness size.
6. The utility model is suitable for different base layer types (cement stabilized macadam base layer, graded macadam base layer, sand cobble base layer and existing concrete pavement base layer) and different working conditions (airport pavement, highway pavement and container yard). The utility model is not limited by working condition scenes, the connecting members are all prefabricated in engineering, and can be used under various base layer conditions (graded broken stone base layer, cement stabilized broken stone base layer, sand and pebble base layer and old panel base layer). The connection between the plates is tight, the force transmission effect is good, the flatness is high, and the requirements of the specification on an airport pavement, a highway pavement or a container yard are met.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a connection structure of a prefabricated panel based on interconnection of micro-prestressed single plates according to an embodiment of the present invention;
fig. 2 is a partially enlarged view of a connection structure of a prefabricated panel based on micro-prestressed single-board interconnection according to an embodiment of the present invention.
In the attached drawings, 1 is a first precast slab, 2 is a second precast slab, 3 is a connecting steel bar, 31 is an external thread, 4 is a reserved hole channel, 5 is a reserved threaded hole, 6 is a reserved nut opening, and 7 is a nut.
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 the description of the present invention, it is to be understood that the terms "center", "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, and are only for convenience of description and simplicity of description, 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 terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of the present invention, the meaning of "plurality" or "a plurality" is two or more unless otherwise specified.
Referring to fig. 1 and 2, the embodiment of the utility model provides a precast panel connection structure based on micro-prestressed single-slab interconnection, which comprises a first precast slab 1 and a second precast slab 2, wherein the first precast slab 1 is provided with at least one reserved hole 4 extending along a longitudinal direction of a road and penetrating through the first precast slab 1, the second precast slab 2 is provided with reserved threaded holes 5 corresponding to the reserved hole 4 of the first precast slab 1 one by one, a first connecting steel bar 3 is matched in the reserved hole 4 of the first precast slab 1, one end of the first connecting steel bar 3 is provided with an external thread 31, one end of the first connecting steel bar 3 provided with the external thread 31 penetrates through the reserved hole 4 of the first precast slab 1 and extends into the reserved threaded hole 5 of the adjacent second precast slab 2 to be fixedly connected with the second precast slab 2 through a thread, a gap for grouting is arranged between the first connecting steel bar 3 and the inner wall of the reserved hole 4 of the first precast slab 1, the first connecting steel bar 3 is fixedly connected with the first prefabricated panel 1 through grout poured into the reserved hole 4 of the first prefabricated panel 1.
A plurality of first prefabricated plates 1 and second prefabricated plates 2 are paved in a staggered mode along the longitudinal direction of a road.
Furthermore, the second precast slab 2 is provided with at least one reserved hole 4 which extends along the longitudinal direction of the road and penetrates through the second precast slab 2, the first precast slab 1 is provided with a reserved threaded hole 5, corresponding to the reserved hole channels 4 of the second precast slabs 2 one by one, the reserved hole channels 4 of the second precast slabs 2 are matched with second connecting steel bars 3, one end of the second connecting steel bar 3 is provided with an external thread 31, one end of the second connecting steel bar 3 provided with the external thread 31 passes through the reserved hole 4 of the second prefabricated plate 2 and extends into the reserved threaded hole 5 of the adjacent first prefabricated plate 1 to be fixedly connected with the first prefabricated plate 1 through a thread, a gap for grouting is arranged between the second connecting steel bar 3 and the inner wall of the reserved hole 4 of the second prefabricated plate 2, and fixedly connecting the second connecting reinforcing steel bar 3 with the second prefabricated plate 2 through grout poured into the reserved hole 4 of the second prefabricated plate 2.
In two adjacent precast slabs, the reserved hole channels 4 of the first precast slab 1 and the reserved hole channels 4 of the second precast slab 2 are arranged in a staggered mode along the transverse direction of the road surface, namely the reserved hole channels 4 of the first precast slab 1 and the reserved hole channels 4 of the second precast slab 2 are not on the same straight line.
Furthermore, the reserved hole channels 4 and the reserved threaded holes 5 on the first precast slab 1 are arranged in a staggered mode at intervals along the transverse direction of the pavement; reserved hole channels 4 and reserved threaded holes 5 on the second prefabricated plate 2 are arranged in a staggered mode at intervals along the transverse direction of the road surface.
Furthermore, a sealing plug is fixed at one end of each reserved pore channel 4, which is far away from the corresponding reserved threaded hole 5.
Further, the sealing plug is a sealing nut 7, a reserved nut 7 opening 6 is arranged at one end, far away from the corresponding reserved threaded hole 5, of each reserved hole 4, and the sealing nut 7 is fixed in the reserved nut 7 opening 6 through threads.
Further, the first precast slab 1 and the second precast slab 2 are precast cement concrete panels; the grout poured into each reserved hole 4 is concrete.
First connecting reinforcement 3, 3 structures of second connecting reinforcement are the same, are the twisted steel, and the one end of twisted steel sets up external screw thread 31. The other end of the twisted steel can be selectively arranged as required to be used for being matched with a screwing tool, so that the twisted steel can be screwed conveniently.
The concrete panel based on interconnection of the micro-prestressed veneers has the following practical construction procedures:
1) prefabricating a plurality of first prefabricated plates 1 and second prefabricated plates 2 in a factory;
2) setting corresponding base courses according to different working conditions, such as graded broken stone base courses, cement stabilized broken stone base courses, sand and pebble base courses or existing pavement base courses;
3) laying a second prefabricated plate 2 and a first prefabricated plate 1 on a base layer in sequence, aligning a reserved hole channel 4 of the first prefabricated plate 1 with a reserved threaded hole 5 of the second prefabricated plate 2, and carrying out grouting leveling on the bottom of the prefabricated plate through a prefabricated plate grouting hole;
4) one end of the first connecting steel bar 3 provided with the screw thread penetrates through the reserved hole channel 4 of the first precast slab 1, extends into the reserved threaded hole 5 of the second precast slab 2 which is laid in front and is adjacent to the first precast slab, and is screwed tightly;
5) grouting from a reserved hole 4 of the first prefabricated plate 1, sealing by using a sealing nut 7 after grouting is finished, and applying micro prestress;
6) after all the procedures are finished, laying a second prefabricated plate 2, aligning a reserved hole channel 4 of the second prefabricated plate 2 with a reserved threaded hole 5 of the first prefabricated plate 1, and grouting and leveling the bottom of the prefabricated plate through a prefabricated plate grouting hole;
7) one end of the second connecting steel bar 3 provided with the screw thread penetrates through a reserved hole channel 4 of the newly laid second prefabricated plate 2, extends into a reserved threaded hole 5 of the previously laid and adjacent first prefabricated plate 1 and is screwed tightly;
8) grouting from a reserved hole 4 of a newly laid second prefabricated plate 2, sealing by using a sealing nut 7 after grouting is finished, and applying micro prestress;
9) after all the processes are completed, the next first prefabricated slab 1 is laid, and the processes 3) to 5) or the processes 3) to 8) are repeated.
The precast concrete panel of the utility model is provided with the threaded holes and the reserved pipelines in a staggered manner, and the reserved threaded holes and the reserved pipelines of two adjacent plates are respectively corresponding to the reserved pipelines and the threaded holes of the connecting plates; paving a road slab after the base layer is finished, grouting and leveling the slab, inserting a twisted steel bar into a threaded hole of a second prefabricated slab after a first prefabricated slab reserved pipeline is aligned with the threaded hole of the second prefabricated slab, screwing down the twisted steel bar, grouting the first prefabricated slab, sealing the nut for micro-tensioning, and performing next slab construction after the procedures are finished. The connecting structure is suitable for connecting precast concrete panels under various working conditions, the single plates of the micro-prestressed concrete precast panels have high strength, are light and easy to transport and construct, and the thickness of the panels can be effectively reduced under the same mechanical property condition. Besides, the micro-prestressed single-block interconnected panel has no other surface holes except for the seams between edges and the hoisting grouting holes, the single plate has good integrity, and the plates have good force transmission and integrity; the precast concrete panel connecting member formed by interconnecting the micro-prestressed veneers is simple in structure, low in processing cost, convenient to transport and hoist and high in construction and installation speed. The bearing capacity of the single plate is far superior to that of a non-micro prestressed plate, and the single plate is suitable for extremely heavy traffic grades. The micro-prestress single-plate interconnection structure is particularly suitable for the rush-construction repair engineering of airport pavement, highway pavement or container yard.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (6)
1. The utility model provides a prefabricated panel connection structure based on interconnection of little prestressing force veneer which characterized in that: the prefabricated slab comprises a first prefabricated slab and a second prefabricated slab, wherein the first prefabricated slab is provided with at least one reserved hole penetrating through the first prefabricated slab, the second prefabricated slab is provided with reserved threaded holes and corresponds to the reserved holes of the first prefabricated slab one to one, a first connecting steel bar is matched in the reserved hole of the first prefabricated slab, one end of the first connecting steel bar is provided with a thread, one end of the first connecting steel bar provided with the thread penetrates through the reserved hole of the first prefabricated slab and extends into a reserved threaded hole of the adjacent second prefabricated slab to be fixedly connected with the thread of the second prefabricated slab, a gap for grouting is arranged between the first connecting steel bar and the inner wall of the reserved hole of the first prefabricated slab, and the first connecting steel bar is fixedly connected with the first prefabricated slab through grout poured in the reserved hole of the first prefabricated slab.
2. A pre-fabricated panel connection structure based on micro-prestressed veneer interconnection according to claim 1, characterized in that: the second prefabricated plate is provided with at least one reserved hole penetrating through the second prefabricated plate, the first prefabricated plate is provided with reserved threaded holes which correspond to the reserved holes of the second prefabricated plate one to one, a second connecting steel bar is matched in the reserved hole of the second prefabricated plate, one end of the second connecting steel bar is provided with a thread, one end of the second connecting steel bar provided with the thread penetrates through the reserved hole of the second prefabricated plate and extends into the reserved threaded hole of the adjacent first prefabricated plate to be fixedly connected with the first prefabricated plate through the thread, a gap for grouting is arranged between the second connecting steel bar and the inner wall of the reserved hole of the second prefabricated plate, and the second connecting steel bar is fixedly connected with the second prefabricated plate through grout poured in the reserved hole of the second prefabricated plate.
3. A pre-fabricated panel connection structure based on micro-prestressed veneer interconnection according to claim 2, characterized in that: reserved hole channels and reserved threaded holes on the first prefabricated plate are arranged in a staggered mode at intervals; reserved hole channels and reserved threaded holes on the second prefabricated plate are also arranged in a staggered mode at intervals.
4. A pre-fabricated panel connection structure based on micro-prestressed veneer interconnection according to claim 1, characterized in that: and a sealing plug is fixed at one end of each reserved pore channel, which is far away from the corresponding reserved threaded hole.
5. The micro-prestressed veneer interconnect-based prefabricated panel connection structure according to claim 4, wherein: the sealing plug is a sealing nut, a reserved nut opening is formed in each reserved pore channel and one end, far away from the corresponding reserved threaded hole, of each reserved pore channel, and the sealing nut is fixed in the reserved nut opening through threads.
6. A pre-fabricated panel connection structure based on micro-prestressed veneer interconnection according to claim 1, characterized in that: the first precast slab and the second precast slab are precast concrete panels; the grout poured in each reserved pore channel is concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121323885.0U CN215405391U (en) | 2021-06-15 | 2021-06-15 | Prefabricated panel connection structure based on interconnection of micro-prestress single plates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121323885.0U CN215405391U (en) | 2021-06-15 | 2021-06-15 | Prefabricated panel connection structure based on interconnection of micro-prestress single plates |
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| Publication Number | Publication Date |
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| CN215405391U true CN215405391U (en) | 2022-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121323885.0U Active CN215405391U (en) | 2021-06-15 | 2021-06-15 | Prefabricated panel connection structure based on interconnection of micro-prestress single plates |
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| CN (1) | CN215405391U (en) |
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- 2021-06-15 CN CN202121323885.0U patent/CN215405391U/en active Active
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