CN111962667A - Connecting device for precast concrete beam - Google Patents
Connecting device for precast concrete beam Download PDFInfo
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- CN111962667A CN111962667A CN202010881116.6A CN202010881116A CN111962667A CN 111962667 A CN111962667 A CN 111962667A CN 202010881116 A CN202010881116 A CN 202010881116A CN 111962667 A CN111962667 A CN 111962667A
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- precast concrete
- connecting device
- embedded
- secondary beam
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
- E04B1/21—Connections specially adapted therefor
- E04B1/215—Connections specially adapted therefor comprising metallic plates or parts
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The invention discloses a connecting device for a precast concrete beam, which is used for connecting a main beam and a secondary beam, wherein an embedded steel plate is embedded in the secondary beam, the embedded steel plate comprises an embedded part and an overhanging part, the embedded part is used for being embedded in the secondary beam to realize the fixation of the embedded steel plate, and the overhanging part is used for being placed on the main beam to realize the connection of the main beam and the secondary beam; by adopting the connecting device, the rapid construction of the structure and the reduction of the structure weight can be effectively realized.
Description
Technical Field
The invention relates to the technical field of civil engineering, in particular to a connecting device for a precast concrete beam.
Background
The prefabricated concrete structure is a concrete structure formed by assembling and connecting prefabricated concrete members serving as main stressed members. The prefabricated concrete structure is one of the important directions for the development of the building industry in China, and can improve the construction efficiency, save energy and ensure the engineering quality. Compared with a cast-in-place construction method, the construction of the fabricated structure meets the requirements of sustainable development better, because the construction of the fabricated structure can meet the requirements of land saving, energy saving, material saving, water saving, environmental protection and the like better, and the negative effects on the environment are reduced, including noise reduction, dust prevention, environmental pollution reduction, clean transportation, field interference reduction, water, electricity, material and other resources and energy sources.
In the prior art, in a laminated floor system with an assembled concrete structure, a main beam and a secondary beam are hinged. The hinge connection form is as follows:
(1) the main beam is provided with a key groove and is connected with the secondary beam through post-cast concrete;
(2) the main beam is provided with a cantilever lug, and the secondary beam is provided with a concrete rabbet for placing connection;
the first method requires post-cast concrete, increases construction procedures, improves construction difficulty, and cannot exert the advantage of rapid construction of an assembled structure. The second method requires the secondary beam to be provided with the concrete rabbet, and requires the main beam to be provided with the cantilever lug to be used as a placing support of the secondary beam concrete rabbet, so that the weight of the secondary beam and the main beam is increased, and the hoisting of the prefabricated part and the shock resistance of the structure are not facilitated.
Therefore, there is a need for a precast concrete beam connecting device that is quick and light in construction.
Disclosure of Invention
The invention aims to provide a connecting device for a precast concrete beam, which can effectively realize the quick construction of a structure and the reduction of the weight of the structure.
In order to achieve the above objects and other related objects, the present invention provides a connecting device for a precast concrete beam, the connecting device being used for connecting a main beam and a secondary beam, wherein the secondary beam is embedded with an embedded steel plate, the embedded steel plate includes an embedded portion and an overhanging portion, the embedded portion is used for being embedded inside the secondary beam to fix the embedded steel plate, and the overhanging portion is used for being rested on the main beam to connect the main beam and the secondary beam.
Preferably, the connecting device further comprises connecting steel bars, one part of the connecting steel bars is connected with the embedded steel plates, and the other part of the connecting steel bars is embedded into the secondary beam.
Preferably, the connecting reinforcing steel bars comprise transverse reinforcing steel bars and longitudinal reinforcing steel bars, the extension directions of the transverse reinforcing steel bars and the secondary beams are the same, and the extension directions of the longitudinal reinforcing steel bars and the secondary beams are perpendicular.
Preferably, the connecting bar further comprises a steering bar including a plurality of portions extending in different directions.
Preferably, the number of the connecting bars is plural.
Preferably, the connecting steel bar is HRB400 or HRB500 series steel bar.
Preferably, the diameter of the reinforcing steel bar is 10-40 mm.
Preferably, the two portions of the steering reinforcement are perpendicular to each other.
Preferably, the longitudinal height of the overhanging portion is 200-600 mm.
Preferably, the thickness of the embedded steel plate is 10-50 mm.
In conclusion, the embedded part is used as the connection transition of the precast concrete secondary beam and the main beam, namely, the precast concrete secondary beam is placed on the precast concrete main beam through the embedded part, so that the construction link of post-pouring concrete in key groove connection is omitted, the precast concrete secondary beam can be directly placed, the construction speed is accelerated, the lug of the main beam and the concrete tongue-and-groove of the secondary beam in dry tongue-and-groove connection are omitted, and the structural weight is reduced. Furthermore, the embedded part and the precast concrete secondary beam are not of an integrated structure, belong to an installation structure and can be detached; still further, the embedded part is embedded into the precast concrete secondary beam through the connecting steel bars in multiple angles, and the bearing capacity is high.
Drawings
Fig. 1 is a schematic view of a connecting apparatus for a precast concrete beam according to an embodiment of the present invention.
Wherein the reference numerals are as follows:
10-precast concrete main beam, 20-precast concrete secondary beam, 30-embedded steel plate, 30 a-embedded part, 30 b-overhanging part, 30 c-connecting steel bar, 31-transverse steel bar, 32-longitudinal steel bar and 33-steering steel bar.
Detailed Description
The core idea of the invention is to adopt the embedded part as the connection transition of the precast concrete secondary beam and the main beam, namely the precast concrete secondary beam is placed on the precast concrete main beam through the embedded part, thus not only eliminating the construction link of post-pouring concrete in key groove connection, but also directly placing, accelerating the construction speed, eliminating the lug of the main beam and the concrete tongue-and-groove of the secondary beam in dry tongue-and-groove connection and reducing the structure weight.
The following describes in more detail embodiments of the present invention with reference to the schematic drawings. The advantages and features of the present invention will become more apparent from the following description. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "left", "right", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Furthermore, 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, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Fig. 1 is a schematic view of a precast concrete beam connection device according to an embodiment of the present invention, and referring to fig. 1, the precast concrete beam connection device according to the embodiment is used for connecting a precast concrete main beam 10 and a precast concrete secondary beam 20, a steel plate 30 is embedded in the precast concrete secondary beam 20, the embedded steel plate 30 includes an embedded portion 30a and an overhanging portion 30b, the embedded portion 30a is used for being embedded in the precast concrete secondary beam 20 to fix the embedded steel plate 30, and the overhanging portion 30b is used for resting on the precast concrete main beam 10 to connect the precast concrete secondary beam 20 and the precast concrete main beam 10. During specific construction, the precast concrete secondary beam 20 is directly placed on the precast concrete main beam 10 through the embedded steel plate 30, so that the construction link of post-pouring concrete in key groove connection is omitted, the precast concrete secondary beam can be directly placed, the construction speed is accelerated, the lug of the main beam and the concrete tongue and groove of the secondary beam in dry tongue and groove connection are omitted, and the structural weight is reduced.
In order to fully exert the material strength of the embedded steel plate 30, referring to fig. 1, a connecting steel bar 30c is arranged between the embedded steel plate 30 and the precast concrete secondary beam 20, one part of the connecting steel bar 30c is welded with the embedded steel plate 30, and the other part is embedded in the precast concrete secondary beam 20, so that the embedded steel plate 30 and the precast concrete secondary beam 20 are tightly combined together. The embedded steel plates 30 with different specifications and the connecting steel bars 30c with different diameters and quantities can be selected for assembly according to the requirement of the bearing capacity of the beam end.
In addition, as shown in fig. 1, the connecting rebars 30c include various forms, mainly including transverse rebars 31, longitudinal rebars 32, and turning rebars 33, and the transverse rebars 31 extend in the same direction as the precast concrete secondary beams 20; the extending direction of the longitudinal steel bar 32 is perpendicular to the extending direction of the precast concrete secondary beam 20; the steering reinforcement 33 includes a plurality of portions extending in different directions, for example, as shown in fig. 1, the steering reinforcement 33 mainly includes two portions extending in a direction perpendicular to or the same as the direction in which the precast concrete sub-beam 20 extends. The connecting steel bars 30c of various types can meet the stress requirements in various directions, so that the embedded steel plate 30 is tightly embedded into the precast concrete secondary beam 20, the material strength of the embedded steel plate 30 is fully exerted, and the bearing capacity requirement of the structure is met.
The connecting steel bar 30c is generally made of HRB400 or HRB500 series steel bars, and the diameter of the connecting steel bar 30c is generally 10-40 mm; in addition, the longitudinal height of the overhanging part 30b is 200-600mm, and the embedded steel plate 30 with the overhanging part 30b having different longitudinal heights can be adopted according to different bearing capacity requirements, for example, when the bearing capacity requirement of the beam end of the precast concrete secondary beam 20 is higher, the embedded steel plate 30 with the relatively larger longitudinal height of the overhanging part 30b is adopted, and the height of the embedded part 30a is also relatively larger; when the requirement on the beam-end bearing capacity of the precast concrete secondary beam 20 is low, the embedded steel plate 30 with the relatively small longitudinal height of the overhanging part 30b is adopted, and the height of the embedded part 30a is also relatively small. The thickness of the embedded steel plate 30 is generally 10-50 mm.
The invention has the advantages that the embedded part is used as the connection transition of the precast concrete secondary beam and the main beam, namely, the precast concrete secondary beam is placed on the precast concrete main beam through the embedded part, thereby not only eliminating the construction link of post-pouring concrete in key groove connection, but also directly placing, accelerating the construction speed, eliminating the lug of the main beam and the concrete rabbet of the secondary beam in dry type rabbet connection and reducing the structure weight. Furthermore, the embedded part and the precast concrete secondary beam are not integrated but belong to an installation structure and can be detached; still further, the embedded part is embedded into the precast concrete secondary beam through the connecting steel bars in multiple angles, and the bearing capacity is high.
The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any way. It will be understood by those skilled in the art that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The utility model provides a connecting device for precast concrete roof beam, connecting device is used for the connection of girder and secondary beam, its characterized in that, the secondary beam is embedded to have an embedded steel sheet, embedded steel sheet is including burying the part and choosing the part outward, it is used for burying to bury the part is inside in order to realize the secondary beam embedded steel sheet is fixed, it is used for shelving to choose the part outward on the girder in order to realize the girder with the connection of secondary beam.
2. A connecting device for a precast concrete beam as set forth in claim 1, further comprising a connecting bar having a portion connected to said embedded steel plate and another portion embedded in said secondary beam.
3. A connecting device for a precast concrete beam as set forth in claim 2, wherein said connecting bars include transverse bars extending in the same direction as the extension direction of the secondary beam and longitudinal bars extending perpendicular to the extension direction of the secondary beam.
4. A connecting device for a precast concrete beam as set forth in claim 3, wherein said connecting bar further comprises a steering bar including a plurality of portions extending in different directions.
5. A connecting device for a precast concrete beam as set forth in claim 2, wherein the number of the connecting reinforcing bars is plural.
6. A connecting device for a precast concrete beam as set forth in claim 5, wherein said connecting bars are HRB400 or HRB500 series bars.
7. A connecting device for a precast concrete beam as set forth in claim 6, wherein the reinforcing bars have a diameter of 10-40 mm.
8. A connecting device for a precast concrete beam as set forth in claim 4, wherein the two portions of the steering reinforcement are perpendicular to each other.
9. A connecting device for a precast concrete beam as set forth in claim 1, wherein the longitudinal height of said cantilever portion is 200 and 600 mm.
10. A connecting device for a precast concrete beam as set forth in claim 9, wherein the thickness of the embedded steel plate is 10-50 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010881116.6A CN111962667A (en) | 2020-08-27 | 2020-08-27 | Connecting device for precast concrete beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010881116.6A CN111962667A (en) | 2020-08-27 | 2020-08-27 | Connecting device for precast concrete beam |
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| Publication Number | Publication Date |
|---|---|
| CN111962667A true CN111962667A (en) | 2020-11-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010881116.6A Pending CN111962667A (en) | 2020-08-27 | 2020-08-27 | Connecting device for precast concrete beam |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009142416A2 (en) * | 2008-05-19 | 2009-11-26 | (주)크로스구조연구소기술사사무소 | Strengthening member for reinforced concrete beam end coupling, and a structural-element construction method employing the same |
| CN103938736A (en) * | 2014-05-04 | 2014-07-23 | 长沙远大住宅工业有限公司 | Prefabricated superposed primary and secondary beam connecting piece and prefabricated composite primary and secondary beam connecting structure |
| CN204753843U (en) * | 2015-07-14 | 2015-11-11 | 江苏建筑职业技术学院 | PC primary and secondary roof beam bolted connection node |
| CN107313508A (en) * | 2017-05-04 | 2017-11-03 | 上海中建东孚投资发展有限公司 | A kind of prefabricated assembled primary-secondary beam mounting structure and installation method |
| CN110656710A (en) * | 2019-08-30 | 2020-01-07 | 同济大学建筑设计研究院(集团)有限公司 | Prefabricated weak connection structure of reinforced concrete connecting beam and construction method thereof |
| CN111042436A (en) * | 2019-12-22 | 2020-04-21 | 同济大学 | Section steel concrete tongue-and-groove for precast concrete beam |
| CN111075110A (en) * | 2019-12-27 | 2020-04-28 | 同济大学 | Profile steel tongue-and-groove for precast concrete beam |
-
2020
- 2020-08-27 CN CN202010881116.6A patent/CN111962667A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009142416A2 (en) * | 2008-05-19 | 2009-11-26 | (주)크로스구조연구소기술사사무소 | Strengthening member for reinforced concrete beam end coupling, and a structural-element construction method employing the same |
| CN103938736A (en) * | 2014-05-04 | 2014-07-23 | 长沙远大住宅工业有限公司 | Prefabricated superposed primary and secondary beam connecting piece and prefabricated composite primary and secondary beam connecting structure |
| CN204753843U (en) * | 2015-07-14 | 2015-11-11 | 江苏建筑职业技术学院 | PC primary and secondary roof beam bolted connection node |
| CN107313508A (en) * | 2017-05-04 | 2017-11-03 | 上海中建东孚投资发展有限公司 | A kind of prefabricated assembled primary-secondary beam mounting structure and installation method |
| CN110656710A (en) * | 2019-08-30 | 2020-01-07 | 同济大学建筑设计研究院(集团)有限公司 | Prefabricated weak connection structure of reinforced concrete connecting beam and construction method thereof |
| CN111042436A (en) * | 2019-12-22 | 2020-04-21 | 同济大学 | Section steel concrete tongue-and-groove for precast concrete beam |
| CN111075110A (en) * | 2019-12-27 | 2020-04-28 | 同济大学 | Profile steel tongue-and-groove for precast concrete beam |
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Application publication date: 20201120 |