CN110130487B - Prefabricated main and secondary beam connecting node and connecting method - Google Patents
Prefabricated main and secondary beam connecting node and connecting method Download PDFInfo
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- CN110130487B CN110130487B CN201910437567.8A CN201910437567A CN110130487B CN 110130487 B CN110130487 B CN 110130487B CN 201910437567 A CN201910437567 A CN 201910437567A CN 110130487 B CN110130487 B CN 110130487B
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- 238000000034 method Methods 0.000 title claims abstract description 30
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 30
- 239000010959 steel Substances 0.000 claims abstract description 30
- 238000000465 moulding Methods 0.000 claims description 8
- 238000007711 solidification Methods 0.000 claims description 8
- 230000008023 solidification Effects 0.000 claims description 8
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 4
- 238000010276 construction Methods 0.000 description 13
- 230000008569 process Effects 0.000 description 9
- 238000009435 building construction Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/20—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members
Abstract
The invention discloses a prefabricated main and secondary beam connecting node, which comprises a prefabricated main beam, wherein the two sides of the prefabricated main beam are fixedly connected with prefabricated secondary beams, fixed steel bars are pre-embedded in the prefabricated main beam and the prefabricated secondary beams, first straight thread sleeves are pre-embedded in the two sides of the prefabricated main beam, straight anchor steel bars are connected with the inner surfaces of the two first straight thread sleeves in a threaded manner, and second straight thread sleeves are pre-embedded in the two sides of the prefabricated main beam and right below the first straight thread sleeves. The connecting node and the connecting method for the prefabricated main and secondary beams are characterized in that the connecting position of the prefabricated main and secondary beams is not disconnected, but the mode of embedding the primary straight thread sleeve is adopted for producing the components, so that the position of the prefabricated beam node is not required to be disconnected, the condition of fracture of the components is avoided, the connecting node can be adopted for large-span prefabricated beams, and the connecting node is also applicable to small-span prefabricated beams and has universal applicability for the connecting node of the prefabricated beams.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a prefabricated primary and secondary beam connecting node and a connecting method.
Background
The building construction refers to the production activity of engineering construction implementation stage, which is the construction process of various buildings, and can be said to be the process of changing various lines on a design drawing into real objects at a designated place. The method comprises foundation engineering construction, main body structure construction, roof engineering construction, decoration engineering construction and the like. The site of construction is referred to as a "building site" or "job site," also known as a worksite. The building construction is a production process for building various building products by people in a certain space and time according to a specific design blueprint by using various building materials and mechanical equipment. It includes all production processes from construction preparation, earth breaking and construction completion and acceptance. The building construction is a production process with complex technology, needs building construction workers to exert intelligence, creatively applies theories such as materials, mechanics, structures, processes and the like to solve the technical problems continuously appearing in the construction, and ensures the engineering quality and the construction safety. The construction process is performed by a plurality of workers in a limited time and a certain space. Hundreds of materials, and various mechanical equipment, a scientific and advanced organization management measure and an advanced construction process are needed to complete the production process, and the process is a process with great economy.
The existing connecting method of the prefabricated main beams and the prefabricated secondary beams is partially carried out in a mode of disconnecting connecting nodes and binding reinforcing steel bars at site node positions for post-pouring, and the connecting method can only be used for the conditions of small weight and small span of components.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the invention provides a connecting node and a connecting method of a prefabricated main beam and a prefabricated secondary beam, which solve the problems that the prior connecting method of the prefabricated main beam and the prefabricated secondary beam is difficult to transport because the rigidity of channel steel is limited and the position of the node is extremely easy to break when the prefabricated beam with large span and large weight is transported by adopting reinforcing channel steel during transportation, and the scheme of integrally prefabricating the overhanging reinforcing steel of the main beam node occupies a larger transverse space and is unfavorable for transportation of components.
(II) technical scheme
In order to achieve the above purpose, the invention is realized by the following technical scheme: the utility model provides a prefabricated owner secondary beam connected node, includes the prefabricated girder, the equal fixedly connected with of both sides of prefabricated girder is prefabricated secondary beam, and the inside of prefabricated girder and prefabricated secondary beam is all pre-buried has fixed steel bar, the equal pre-buried first straight thread sleeve that has in both sides of prefabricated girder, two equal threaded connection of first straight thread sleeve's internal surface has straight anchor reinforcing bar, two the equal pre-buried U type overlap joint of inside of prefabricated secondary beam, the keyway has all been seted up to the both sides of prefabricated girder.
Preferably, the number of the first straight thread sleeves is multiple, and the first straight thread sleeves are uniformly distributed on two sides of the prefabricated main beam.
The invention also discloses a connection method of the prefabricated primary and secondary beam connection nodes, which specifically comprises the following steps:
step one, pouring a prefabricated girder: when the prefabricated girder is poured, first straight thread sleeves are pre-buried at two sides of the prefabricated girder, then concrete pouring molding is carried out on fixed steel bars inside the prefabricated girder, and concrete solidification is waited for;
step two, installing a prefabricated girder: after the prefabricated main beam in the first step is hoisted, a straight anchor bar with one end tapped with a screw tooth is screwed into a first straight thread sleeve to finish node steel bar connection during installation;
step three, mounting a prefabricated secondary beam: binding and fixing the steel bars of the prefabricated secondary beams according to a drawing, embedding U-shaped lap joints, then performing concrete pouring molding, and enabling the concrete to enter key grooves at two sides of the prefabricated main beams;
pouring the precast secondary beam: and thirdly, pouring a layer of concrete on the top of the prefabricated girder and the top of the prefabricated girder after the concrete in the third step is solidified, so that the concrete covers the prefabricated girder and the fixed steel bars on the top of the prefabricated girder, and finally waiting for solidification.
Preferably, in the first step, the number of the first straight thread sleeves pre-buried at two sides of the prefabricated main beam is obtained through checking according to design requirements.
Preferably, in the third step, the prefabricated main beams and the prefabricated secondary beams form a partially integrated concrete shear key through key grooves.
Preferably, the number of the key grooves in the third step is calculated according to engineering requirements.
(III) beneficial effects
The invention provides a prefabricated primary and secondary beam connecting node and a connecting method. Compared with the prior art, the method has the following beneficial effects: according to the prefabricated main and secondary beam connecting node and the connecting method, the prefabricated secondary beams are fixedly connected to the two sides of the prefabricated main beam, fixing reinforcing steel bars are pre-buried in the prefabricated main beam and the prefabricated secondary beams, first straight thread sleeves are pre-buried in the two sides of the prefabricated main beam, straight anchor reinforcing steel bars are connected to the inner surfaces of the two first straight thread sleeves in a threaded mode, U-shaped lap joints are pre-buried in the two prefabricated secondary beams, key grooves are formed in the two sides of the prefabricated main beam, and the first step and pouring of the prefabricated main beam are carried out: when the prefabricated girder is poured, first straight thread sleeves are pre-buried at two sides of the prefabricated girder, then concrete pouring molding is carried out on fixed steel bars inside the prefabricated girder, and concrete solidification is waited for; step two, installing a prefabricated girder: after the prefabricated main beam in the first step is hoisted, a straight anchor bar with one end tapped with a screw tooth is screwed into a first straight thread sleeve to finish node steel bar connection during installation; step three, mounting a prefabricated secondary beam: binding and fixing the steel bars of the prefabricated secondary beams according to a drawing, embedding U-shaped lap joints, then performing concrete pouring molding, and enabling the concrete to enter key grooves at two sides of the prefabricated main beams; pouring the precast secondary beam: after the concrete in the third step is solidified, a layer of concrete is poured on the top parts of the prefabricated main beams and the prefabricated main beams, so that the concrete covers the prefabricated main beams and the fixed steel bars on the top parts of the prefabricated main beams, and finally, the solidification is waited.
Drawings
FIG. 1 is a front view of the internal structure of the present invention;
fig. 2 is a top view of the internal structure of the present invention.
In the figure, 1-prefabricated girder, 2-prefabricated secondary girder, 3-fixed steel bar, 4-first straight thread sleeve, 5-straight anchor steel bar, 6-U-shaped overlap joint and 7-keyway.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-2, the embodiment of the invention provides a technical scheme: the utility model provides a prefabricated owner secondary beam connected node and connection method, including prefabricated girder 1, prefabricated girder 1's both sides equal fixedly connected with prefabricated secondary beam 2, and prefabricated girder 1 and prefabricated secondary beam 2's inside all pre-buried have fixed steel bar 3, prefabricated girder 1's both sides all pre-buried have first straight thread sleeve 4, first straight thread sleeve 4's quantity is provided with a plurality ofly, and first straight thread sleeve 4 evenly distributed is in prefabricated girder 1's both sides, two first straight thread sleeve 4's internal surface all threaded connection has straight anchor steel bar 5, prefabricated girder 1's both sides just are located first straight thread sleeve 4 under all pre-buried second straight thread sleeve, second straight thread sleeve's quantity is provided with a plurality ofly, and second straight thread sleeve evenly distributed is in prefabricated girder 1's both sides, two second straight thread sleeve's internal surface all threaded connection has curved anchor steel bar, U type overlap joint 6 has all been pre-buried in two prefabricated secondary beam 2's inside, keyway 7 has all been seted up to prefabricated girder 1's both sides.
The invention also discloses a connection method of the prefabricated primary and secondary beam connection nodes, which specifically comprises the following steps:
step one, pouring a prefabricated girder: when the prefabricated main beam 1 is poured, a first straight thread sleeve 4 and a second straight thread sleeve are pre-buried at two sides of the prefabricated main beam 1, then concrete pouring molding is carried out on a fixed reinforcing steel bar 3 inside the prefabricated main beam 1, and concrete solidification is waited for, and in the first step, the number of the pre-buried first straight thread sleeve 4 and the second straight thread sleeve at two sides of the prefabricated main beam 1 is obtained through checking according to design requirements;
step two, installing a prefabricated girder: after the prefabricated main beam 1 in the first step is hoisted, a straight anchor steel bar 5 with one end provided with a screw thread is screwed into a first straight thread sleeve 4 to finish node steel bar connection during installation, and then a curved anchor steel bar with one end provided with the screw thread is screwed into a second straight thread sleeve to finish node steel bar connection, so that one end of the curved anchor steel bar is vertically upwards;
step three, mounting a prefabricated secondary beam: binding and fixing the steel bars of the prefabricated secondary beams 2 according to a drawing, embedding U-shaped lap joints 6, then performing concrete pouring molding, enabling concrete to enter key grooves 7 on two sides of the prefabricated main beams 1, forming a part of integrated concrete shear keys by the prefabricated main beams 1 and the prefabricated secondary beams 2 through the key grooves 7 in the third step, and calculating the number of the key grooves 7 in the third step according to engineering requirements;
pouring the precast secondary beam: and thirdly, after the concrete in the step three is solidified, pouring a layer of concrete on the top parts of the prefabricated main beams 1 and the prefabricated main beams 1, so that the concrete covers the prefabricated main beams 1 and the fixed steel bars 3 on the top parts of the prefabricated main beams 1, and finally waiting for solidification.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. The utility model provides a connection method of prefabricated owner secondary beam connected node, includes prefabricated girder (1), the equal fixedly connected with of both sides of prefabricated girder (1) is prefabricated secondary beam (2), and the inside of prefabricated girder (1) and prefabricated secondary beam (2) is all pre-buried has fixed steel bar (3), its characterized in that: the two sides of the prefabricated main beam (1) are pre-buried with first straight thread sleeves (4), the inner surfaces of the two first straight thread sleeves (4) are connected with straight anchor steel bars (5) in a threaded mode, the interiors of the two prefabricated secondary beams (2) are pre-buried with U-shaped lap joints (6), the two sides of the prefabricated main beam (1) are provided with key grooves (7), the number of the first straight thread sleeves (4) is multiple, and the first straight thread sleeves (4) are uniformly distributed on the two sides of the prefabricated main beam (1);
the method specifically comprises the following steps:
step one, pouring a prefabricated girder: when the prefabricated main beam (1) is poured, first straight thread sleeves (4) are pre-embedded at two sides of the prefabricated main beam (1), then concrete pouring molding is carried out on fixed steel bars (3) in the prefabricated main beam (1), and concrete solidification is waited for;
step two, installing a prefabricated girder: after the prefabricated main beam (1) in the first step is hoisted, a straight anchor reinforcing steel bar (5) with one end tapped with a screw thread is screwed into the first straight thread sleeve (4) to finish node reinforcing steel bar connection during installation;
step three, mounting a prefabricated secondary beam: binding and fixing the steel bars of the prefabricated secondary beams (2) according to a drawing, embedding U-shaped lap joints (6), then performing concrete pouring molding, and enabling the concrete to enter key grooves (7) at two sides of the prefabricated main beams (1);
pouring the precast secondary beam: pouring a layer of concrete on the top of the prefabricated main beam (1) and the top of the prefabricated main beam (1) after the concrete in the step three is solidified, so that the concrete covers the prefabricated main beam (1) and the fixed steel bars (3) on the top of the prefabricated main beam (1), and finally waiting for solidification; in the first step, the number of the first straight thread sleeves (4) pre-buried at the two sides of the prefabricated main beam (1) is obtained by checking according to design requirements;
the prefabricated primary and secondary beam junction is not broken, but the mode of adopting pre-buried one-level straight thread sleeve carries out component production, has guaranteed that the precast beam node position need not break, avoids producing the cracked condition of component, all can adopt to the large-span precast beam, also is applicable to the small-span precast beam equally, has general suitability to the connected node of precast beam.
2. A method of connecting a precast primary and secondary beam connection node according to claim 1, characterized in that: in the third step, the prefabricated main beams (1) and the prefabricated secondary beams (2) form a part of integrated concrete shear keys through key grooves (7).
3. A method of connecting a precast primary and secondary beam connection node according to claim 1, characterized in that: and in the third step, the number of the key grooves (7) is calculated and obtained according to engineering requirements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910437567.8A CN110130487B (en) | 2019-05-24 | 2019-05-24 | Prefabricated main and secondary beam connecting node and connecting method |
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| CN201910437567.8A CN110130487B (en) | 2019-05-24 | 2019-05-24 | Prefabricated main and secondary beam connecting node and connecting method |
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| CN110130487A CN110130487A (en) | 2019-08-16 |
| CN110130487B true CN110130487B (en) | 2024-01-16 |
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| CN112411746A (en) * | 2020-11-27 | 2021-02-26 | 湖南建工五建建筑工业化有限公司 | Primary and secondary beam cross lap joint structure and connection method thereof |
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