CN217079107U - Concrete precast beam connection structure - Google Patents
Concrete precast beam connection structure Download PDFInfo
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- CN217079107U CN217079107U CN202220243787.4U CN202220243787U CN217079107U CN 217079107 U CN217079107 U CN 217079107U CN 202220243787 U CN202220243787 U CN 202220243787U CN 217079107 U CN217079107 U CN 217079107U
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Abstract
The utility model provides a precast concrete roof beam connection structure, include: the concrete prefabricated beam comprises concrete prefabricated beams and concrete wet joints arranged between the concrete prefabricated beams; the concrete wet joint comprises cast-in-place concrete combined between concrete precast beams, the concrete precast beams comprise in-beam concrete and embedded steel bars extending out of the in-beam concrete and entering the cast-in-place concrete, the embedded steel bars in the cast-in-place concrete are detachably connected with anchoring tenons, and the embedded steel bars and the anchoring tenons are fixed in the concrete wet joint through the cast-in-place concrete. The anchoring tenon is detachably connected to the embedded steel bars of the concrete precast beam in the cast-in-place concrete, so that the construction difficulty before pouring of the wet joint concrete is simplified, the stable anchoring parts of the embedded steel bars in the cast-in-place concrete are formed through the anchoring tenon, and the stable connection among different concrete precast beams is realized.
Description
Technical Field
The utility model relates to a technical field, concretely relates to precast concrete roof beam connection structure are assembled to precast concrete roof beam.
Background
The precast concrete beam is formed by erecting, stirring and pouring a formwork on site in a concrete member factory or a construction site, and is transported to an installation position for installation after the strength reaches design specifications.
In the splicing and installation process of different precast concrete beams, especially in the splicing process of the precast concrete beams, in order to improve the connection stability between the different precast concrete beams, concrete is required to be cast in situ between the two precast concrete beams for construction of a wet joint, and embedded steel bars in the precast concrete beams are cast in the concrete of the wet joint for splicing.
In the existing pouring construction of wet joints, the pre-embedded steel bars need to be mutually overlapped in a bending mode, and the overlapped steel bars and concrete steel bars of the wet joints are poured simultaneously.
The mutual lap joint of the embedded steel bars increases the construction difficulty, wastes time and long time, so that the workload of field operators is extremely large, and the engineering period and the construction efficiency are seriously influenced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a precast concrete roof beam connection structure can effectively reduce the construction degree of difficulty of precast concrete roof beam when wet seam is assembled, improves the efficiency of construction and can guarantee the steadiness that different precast concrete roof beams connect.
The utility model provides a pair of precast concrete roof beam connection structure, include: the concrete wet joint comprises concrete precast beams and concrete wet joints arranged between the concrete precast beams;
the concrete wet joint comprises cast-in-place concrete combined between concrete precast beams, the concrete precast beams comprise in-beam concrete and embedded steel bars extending out of the in-beam concrete and entering the cast-in-place concrete, the embedded steel bars in the cast-in-place concrete are detachably connected with anchoring tenons, and the embedded steel bars and the anchoring tenons are fixed in the concrete wet joint through the cast-in-place concrete.
Furthermore, the embedded steel bars comprise a plurality of rows arranged along the thickness direction of the concrete precast beam, each row of the embedded steel bars are arranged at intervals in the length direction of the concrete precast beam, and the embedded steel bars are connected with the anchoring tenons.
Furthermore, the multiple rows of embedded steel bars are flatly laid in the cast-in-place concrete, so that the anchoring tenons are arranged in a layered mode, and each layer of the anchoring tenons is distributed in the cast-in-place concrete in a staggered mode.
Furthermore, the stretching end of the embedded steel bar is arranged in the cast-in-place concrete, and the anchoring tenon is connected to the stretching end of the embedded steel bar.
Furthermore, the end that stretches out of embedded steel bar is including the screw head of taking the screw thread, anchor tenon threaded connection be in on the screw head.
Further, the anchoring tenon is a dovetail tenon.
Further, the contact surface of the precast concrete beam and the cast-in-place concrete is a bevel tangent plane inclined and extended from top to bottom.
Furthermore, the included angle between the inclined cutting plane and the vertical direction is 20-30 degrees.
Further, the scarf sets up the both sides of precast concrete roof beam, embedded steel bar is followed respectively stretch out in the scarf.
Furthermore, a longitudinal steel bar is further arranged in the cast-in-place concrete, and the longitudinal steel bar is connected with the embedded steel bar extending into the cast-in-place concrete.
The beneficial effects of the utility model mainly lie in: the anchor tenon is detachably connected to the embedded steel bars of the concrete precast beams in the cast-in-place concrete, so that the construction difficulty before wet joint concrete pouring is simplified, the stable anchoring parts of the embedded steel bars in the cast-in-place concrete are formed through the anchor tenon, and the embedded steel bars and the anchor tenon are fixedly poured through the cast-in-place concrete, so that the stable connection among different concrete precast beams is realized.
The anchor tenon is through being connected the form with embedded bar detachable, can the high-speed joint installation, makes site operation personnel's connection installation more convenient, has effectively improved the efficiency of construction.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural view of a connection structure of a precast concrete beam according to the present invention;
FIG. 2 is a schematic top view of the cast-in-place concrete of FIG. 1 prior to placement;
FIG. 3 is a schematic side view of the cast-in-place concrete of FIG. 1 after placement;
fig. 4 is a schematic view of a connection structure of the dovetail-shaped anchoring tenon and the embedded steel bars.
In the figure:
1-precast concrete beam; 11-concrete in beam; 12-embedding reinforcing steel bars; 13-filament ends; 14-a chamfer plane;
2-concrete wet joints; 21-cast-in-place concrete;
3-anchoring the tenon.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
Referring to fig. 1-3, the utility model provides a concrete precast beam connection structure, include: the concrete structure comprises concrete precast beams 1 and concrete wet joints 2 arranged between the concrete precast beams 1;
the concrete wet joint 2 comprises a cast-in-place concrete 21 combined between the concrete precast beams 1, the concrete precast beams 1 comprise in-beam concrete 11 and embedded steel bars 12 extending out of the in-beam concrete 11 and entering the cast-in-place concrete 21, the embedded steel bars 12 in the cast-in-place concrete 21 are detachably connected with anchoring tenons 3, and the embedded steel bars 12 and the anchoring tenons 3 are fixed in the concrete wet joint 2 through the cast-in-place concrete 21.
The utility model provides a precast concrete beam connection structure, the connection between the different precast concrete roof beams of mainly used 1 is fixed.
Different precast concrete beams 1 are connected in a wet joint mode through cast-in-place concrete 21 to form a wet concrete joint 2 in the connection process, and the different precast concrete beams 1 can be connected into an integral structure through the wet concrete joint 2.
In the process of prefabricating the concrete precast beam 1, the embedded steel bars 12 extend out of the concrete 11 in the beam to be used as subsequent connecting components. In the connection process of different precast concrete beams 1, the embedded steel bars 12 extending out of the concrete 11 in the beam extend into the cast-in-place concrete 21, and the embedded steel bars 12 are poured and fixed through the cast-in-place concrete 21, so that the connection of different precast concrete beams 1 is realized.
Through connect anchor tenon 3 on stretching into cast in situ concrete 21 part's embedded bar 12, anchor tenon 3 can reliably be fixed in cast in situ concrete 21 to effectively realize the anchor of cast in situ concrete 21 and embedded bar 12 and be connected, improve the tensile resistance in horizontal between the different precast concrete roof beams 1.
The installation form of connection at embedded steel bar 12 can be dismantled to anchor tenon 3, has improved the convenience of anchor tenon 3 installation before cast in situ, compares in the connection of current bending machine and 1 embedded steel bar 12 of two precast concrete beams, only needs to connect anchor tenon 3 and can realize the construction operation before pouring on embedded steel bar 12, has effectively reduced the construction operation degree of difficulty and work load, greatly improves the efficiency of construction.
After the anchoring tenon 3 is installed, the embedded steel bars 12 and the anchoring tenon 3 are poured and fixed in the cast-in-place concrete 21, so that the concrete wet joint 2 is integrally formed, and the connection stability of the concrete precast beam 1 is ensured.
In one embodiment, the embedded steel bars 12 comprise a plurality of rows arranged along the thickness direction of the concrete precast beam 1, and each row of embedded steel bars 12 are arranged at intervals in the length direction of the concrete precast beam 1, and by the arrangement mode, the spatial overlapping arrangement of the embedded steel bars 12 in the cast-in-place concrete 21 area can be effectively formed, so that the intercrossing of the embedded steel bars 12 on different precast concretes is ensured, and the uniformly distributed transverse connection state can be formed while the connection strength is provided.
All be connected with anchor tenon 3 on every embedded steel bar 12 in this embodiment, on the transverse connection basis that forms evenly distributed, also constitute evenly distributed's horizontal stretching resistance through anchor tenon 3 simultaneously, can effectively avoid producing the gap between concrete wet joint seam 2 and concrete precast beam 1, guarantee that different concrete precast beam 1 and concrete wet joint seam 2 constitute overall structure's stability.
Multirow embedded steel bar 12 tiling sets up in cast in situ concrete 21, every embedded steel bar 12 preferably adopts the form of horizontal extension, specifically speaking, the embedded steel bar 12 of reserving in concrete precast beam 1 and the embedded steel bar 12 that stretches out interior concrete 11 of roof beam structure as an organic whole, every embedded steel bar 12 is a relatively independent whole root promptly, and the level is laid in the roof beam between concrete 11 and the cast in situ concrete 21, through the embedded steel bar 12 of whole root structure, can make horizontal tensile and transverse connection all concentrate on the same embedded steel bar 12, further improve connection and tensile operating mode, the overall structure's of constitution stability has been guaranteed.
The height of each row of embedded steel bars 12 in the thickness direction is the same between the adjacent concrete precast beams 1, the embedded steel bars 12 in the same height are staggered in the longitudinal direction (the length direction of the concrete precast beams 1) by a certain interval, the interval is preferably one half of the interval between two adjacent embedded steel bars 12 in the same row, multiple layers of the mutually crossed embedded steel bars 12 can be formed in the cast-in-place concrete 21, meanwhile, the anchoring tenons 3 connected to the embedded steel bars 12 can be distributed in a layered mode, and the staggered distribution state of the anchoring tenons 3 on each layer of the embedded steel bars 12 is formed.
Through the crisscross anchor tenon 3 that distributes of every layer, formed the matrix arrangement state of its dot matrix in cast in situ concrete 21's spatial dimension, can make connecting force and stretching resistance between the precast concrete roof beam 1 disperse more, avoid appearing stress local gathering to lead to connecting the unstability state.
The extending end of the embedded steel bar 12 in this embodiment is arranged in the cast-in-place concrete 21, the extending end extends to a position close to the other precast concrete beam 1, and the anchoring tenon 3 is connected to the extending end of the embedded steel bar 12. Specifically, the embedded steel bars 12 enter the extending end of the cast-in-place concrete 21 from the in-beam concrete 11 and cross over the width center line of the concrete wet joint 2, so that the embedded steel bars 12 of the concrete precast beam 1 which are oppositely arranged form a relative crossing state, and the anchoring tenons 3 connected to the extending end are distributed on two sides of the width center line of the concrete wet joint 2.
Through this kind of mode of setting, strengthened the tensile property of wet seam 2 of concrete, made wet seam 2 of concrete connect ground more stably to two precast concrete roof beams 1 that set up relatively.
Meanwhile, the extension end of the anchoring tenon 3 connected to the embedded steel bar 12 can reduce the operation amount before construction, so that the connection of the anchoring tenon on the embedded steel bar 12 is more convenient.
Referring to fig. 4, in another embodiment, the anchor tenons 3 and the embedded bars 12 are detachably connected through threads, specifically, the extending end of each embedded bar 12 is a threaded head 13 with threads, and the anchor tenons 3 are connected to the threaded heads 13 through threads. Through threaded connection's form, can make things convenient for operating personnel at the installation on the scene to the at utmost, greatly improve the efficiency of construction.
The anchoring tenon 3 in this embodiment is specifically a dovetail-shaped anchoring tenon 3, and an effective anchoring effect can be achieved on the embedded steel bars 12 through the dovetail-shaped structure.
In one preferred embodiment, in order to enhance the connection stability between the concrete precast beam 1 and the concrete wet joint 2, it is necessary to increase the fitting area of the concrete precast beam 1 and the concrete wet joint 2. Specifically, two opposite side surfaces between the concrete precast beams 1 are respectively arranged to be inclined and extended in a form of inclined planes 14 from top to bottom, namely, the concrete wet joint 2 between the concrete precast beams 1 is in an inclined joint form, and compared with a vertical section of the concrete precast beam 1, the combination working condition of the concrete precast beam 1 and the concrete wet joint 2 can be effectively improved.
The inclination angle of two scarf 14 is the same in this embodiment, makes the vertical cross-section of concrete wet joint 2 constitute isosceles trapezoid, combines the crisscross anchor tenon 3 that distributes of multilayer in cast in situ concrete 21, has further strengthened tensile properties. In order to satisfy the requirements of the connection stability and the structural strength of the concrete wet joint 2, the inclined angle of the inclined plane 14 needs to satisfy the requirements of the connection stability and the structural strength of the concrete wet joint 2, and the included angle between the inclined plane 14 and the vertical direction is set to be 20-30 degrees in the embodiment.
The utility model provides a precast concrete beam connection structure can be applied to the connection between two precast concrete beams 1, also can be applied to the connection when between a plurality of precast concrete beams 1, when connecting a plurality of precast concrete beams 1, need set up scarf 14 simultaneously in two sides of precast concrete beam 1, make two of same root embedded steel bar 12 stretch out the end and stretch out and go into cast in situ concrete 21 from scarf 14 respectively, can widen precast concrete beam connection structure's range of application.
It should be noted that, in addition to the transverse connection tensile strength achieved through the anchoring tenon 3, longitudinal dislocation between the concrete precast beams 1 can be prevented through the form of arranging longitudinal steel bars (not shown in the figure) in the cast-in-place concrete 21, and by connecting the longitudinal steel bars with the embedded steel bars 12 extending into the cast-in-place concrete 21, stable connection structures can be formed from angles in different directions, so that the stability of the overall structure formed by assembling is ensured.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A concrete precast beam connecting structure characterized by comprising: the concrete wet joint comprises concrete precast beams and concrete wet joints arranged between the concrete precast beams;
the concrete wet joint comprises cast-in-place concrete combined between concrete precast beams, the concrete precast beams comprise in-beam concrete and embedded steel bars extending out of the in-beam concrete and entering the cast-in-place concrete, the embedded steel bars in the cast-in-place concrete are detachably connected with anchoring tenons, and the embedded steel bars and the anchoring tenons are fixed in the concrete wet joint through the cast-in-place concrete.
2. The precast concrete beam connection structure according to claim 1, wherein the embedded bars include a plurality of rows arranged in a thickness direction of the precast concrete beam, each row of the embedded bars are arranged at intervals in a length direction of the precast concrete beam, and the embedded bars are connected with the anchoring tenons.
3. The precast concrete beam connection structure according to claim 2, wherein a plurality of rows of the embedded reinforcing bars are laid in the cast-in-place concrete such that the anchoring tenons are arranged in layers, each layer of the anchoring tenons being staggered in the cast-in-place concrete.
4. The precast concrete beam connection structure according to claim 3, wherein an extended end of the embedded steel is provided in the cast-in-place concrete, and the anchoring tenon is connected to the extended end of the embedded steel.
5. The precast concrete beam connection structure according to claim 4, wherein the protruding end of the embedded steel bar includes a screw head having a thread, and the anchoring tenon is screw-coupled to the screw head.
6. The precast concrete beam connection structure according to any one of claims 1 to 5, wherein the anchoring tenons are dovetail tenons.
7. The precast concrete beam connection structure according to any one of claims 1 to 5, wherein a contact surface of the precast concrete beam with the cast-in-place concrete is a chamfered surface obliquely extending from top to bottom.
8. The precast concrete beam connection structure according to claim 7, wherein the angle between the diagonal plane and the vertical direction is 20-30 °.
9. The precast concrete beam connection structure of claim 7, wherein the diagonal planes are provided at both sides of the precast concrete beam, and the embedded bars are respectively protruded from the diagonal planes.
10. The precast concrete beam connection structure according to claim 9, wherein longitudinal reinforcing bars are further provided in the cast-in-place concrete, and the longitudinal reinforcing bars are connected with the embedded reinforcing bars extending into the cast-in-place concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220243787.4U CN217079107U (en) | 2022-01-28 | 2022-01-28 | Concrete precast beam connection structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220243787.4U CN217079107U (en) | 2022-01-28 | 2022-01-28 | Concrete precast beam connection structure |
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| CN217079107U true CN217079107U (en) | 2022-07-29 |
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| CN202220243787.4U Active CN217079107U (en) | 2022-01-28 | 2022-01-28 | Concrete precast beam connection structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115288361A (en) * | 2022-08-09 | 2022-11-04 | 山东建筑大学 | Ultra-high performance concrete precast beam |
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- 2022-01-28 CN CN202220243787.4U patent/CN217079107U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115288361A (en) * | 2022-08-09 | 2022-11-04 | 山东建筑大学 | Ultra-high performance concrete precast beam |
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Address after: No.28, hanghai West Road, Erqi District, Zhengzhou City, Henan Province, 450000 Patentee after: Zhengzhou Highway Development Center Patentee after: Zhengzhou Transportation planning Survey, Design and Research Institute Co.,Ltd. Patentee after: Zhengzhou Road and Bridge Construction Investment Group Co.,Ltd. Address before: No.28, hanghai West Road, Erqi District, Zhengzhou City, Henan Province, 450000 Patentee before: Zhengzhou Highway Development Center Patentee before: ZHENGZHOU COMMUNICATIONS PLANNING SURVEY & DESIGN INSTITUTE Patentee before: Zhengzhou Road and Bridge Construction Investment Group Co.,Ltd. |
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