CN110067306A - A kind of precast beam shear key connecting node and connection method - Google Patents
A kind of precast beam shear key connecting node and connection method Download PDFInfo
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- CN110067306A CN110067306A CN201910440637.5A CN201910440637A CN110067306A CN 110067306 A CN110067306 A CN 110067306A CN 201910440637 A CN201910440637 A CN 201910440637A CN 110067306 A CN110067306 A CN 110067306A
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- precast
- shear key
- pours
- connecting node
- reinforcing bar
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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
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
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Abstract
The invention discloses a kind of precast beam shear key connecting node and connection methods, including precast main beam, the two sides of the precast main beam, which pass through cement and pour main body and pour, is connected with prefabricated secondary beam, the inside of the precast main beam is embedded with H profile steel shear key and fixed steel bars respectively, and the present invention relates to technical field of building construction.The precast beam shear key connecting node and connection method, propose a kind of new connecting node, for prefabricated primary-secondary beam junction without disconnecting, and it is utilized in the pre-buried shear key of precast main beam node location (I-steel or other forms can be used) and carries out component production, it ensure that precast beam node location does not need to disconnect, avoid the case where generating component fracture, Large-span Precast Beams can be used, it is applied equally to small span precast beam, there is general applicability for the connecting node of precast beam, the overlap joint reinforcing bar on girder can be cancelled using shear key, the cast-in-place segment length of prefabricated secondary beam can also be reduced.
Description
Technical field
The present invention relates to technical field of building construction, specially a kind of precast beam shear key connecting node and connection method.
Background technique
Construction refers to the production activity of engineering construction implementation phase, is the building course of all kinds of buildings, can also be with
It says it is various lines on design drawing, in specified place, becomes process in kind, it includes basic engineering construction, master
Body structure construction, roof construction, decorative engineering construction etc., the place of construction operation is known as " construction site " or cries
" construction site ", is also named building site, and construction is people using various construction materials, mechanical equipment according to specifically devising and drawing the blueprint
It in certain space, carries out in the time being the production activity building miscellaneous building products and carrying out, it includes from applying
Working drawing is standby, break ground the overall production process checked and accepted to completion of works, and construction is the production process of a technology complexity,
Construction worker is needed to play intelligence and wisdom, creatively application material, mechanics, structure, technique scheduling theory solve construction
The technical problem of middle emergence, it is ensured that construction quality and construction safety, this work progress are in limited time and certain
Spatially carry out multiplexing kind worker operation, the supply of hundreds and thousands of kinds of materials, the operation of various mechanical equipments, it is therefore necessary to
Have science, advanced organization and administration measure and this production process can satisfactorily be completed using advanced construction technology, this
One process is the process with larger economy again, and girder refers in superstructure, support various loads and by its
It is transferred to the beam of pier, platform, crack occurs under hogging moment effect at the top of secondary beam and girder intersection, secondary beam, load is only
The abdomen that girder can be reached by the compressive region of secondary beam can cause master to pull open bad diagonal crack,
The prior art disconnects the connection of precast main beam and prefabricated secondary beam frequently with connecting node, and field node position binds steel
The mode poured carries out after muscle carries out, it is contemplated that the node side can be used when span is smaller for precast beam the reason of transport etc.
Formula, because span is smaller, construction weight is little, and disconnected node position two sides can be used using channel steel is reinforced, guarantee that component is whole
Stability, when lifting, will not damage, but existing node is only applicable to span little, the lesser precast beam of weight, for greatly across
Degree precast beam all can be easily broken in links such as production, transport, installations, and component is caused to be scrapped.
Summary of the invention
(1) the technical issues of solving
In view of the deficiencies of the prior art, it the present invention provides a kind of precast beam shear key connecting node and connection method, solves
The prior art for precast main beam and prefabricated secondary beam connection frequently with connecting node disconnect, the assembling reinforcement of field node position into
The mode poured after row carries out, because span is smaller, construction weight is little, and disconnected node position two sides can be used and use reinforcement tank
Steel guarantees component overall stability, and when lifting will not damage, and existing node is only applicable to that span is little, and weight is lesser prefabricated
Beam.For Large-span Precast Beams the problem of the links such as production, transport, installation all easily can be broken, component is caused to be scrapped.
(2) technical solution
In order to achieve the above object, the present invention is achieved by the following technical programs: a kind of precast beam shear key connecting node, packet
Include precast main beam, the two sides of the precast main beam, which pass through cement and pour main body and pour, is connected with prefabricated secondary beam, the prefabricated master
The inside of beam is embedded with H profile steel shear key and fixed steel bars respectively, and the two sides of the H profile steel shear key run through cement and pour master
The side of body simultaneously extends to the inner cavity that cement pours main body, and the top of the fixed steel bars pours the side of main body simultaneously through cement
The inner cavity that cement pours main body is extended to, the two sides of the precast main beam offer girder keyway.
Preferably, the side of two prefabricated secondary beams pours is connected with connection reinforcing bar, two connection reinforcing bars
One end is run through to be poured the side of main body and extends to the inner cavity that cement pours main body through cement.
Preferably, the side of two prefabricated secondary beams offers secondary beam keyway, and the cement pours the inside of main body
It is embedded with U-shaped overlap joint reinforcing bar.
Preferably, the U-shaped overlap joint steel-bar arrangement has multiple, and U-shaped overlap joint reinforcing bar is evenly distributed in cement and pours master
The inside of body.
The invention also discloses a kind of connection methods of precast beam shear key connecting node, specifically includes the following steps:
Step 1: precast main beam pours: when precast main beam is poured, in the pre-buried H profile steel shear key in the inner cavity of precast main beam,
Then concreting molding is carried out to the fixed steel bars inside precast main beam, and waits concrete setting；
Step 2: the installation of precast main beam: after concrete setting, the precast main beam in step 1 being lifted；
Step 3: the installation of prefabricated secondary beam: the reinforcing bar of prefabricated secondary beam being carried out binding and fixing according to drawing, and is embedded with connection steel
Then muscle carries out once-pouring of concrete molding, and enter concrete in the secondary beam keyway of prefabricated secondary beam two sides, pours and builds up
Prefabricated secondary beam is installed after type；
Step 4: prefabricated secondary beam pours: after the prefabricated secondary beam in step 3 is installed, binding at node after reinforcing bar, pre-
Pour a layer concrete at the top of girder processed and prefabricated secondary beam so that concrete covering precast main beam and precast main beam at the top of consolidate
Determine reinforcing bar, and it is last etc. to be solidified in the girder keyway of precast main beam two sides to enter concrete, H profile steel shear key gos deep into
The length of prefabricated secondary beam is that the Force Calculation according to needed for the material of shear key and beam is got.
Preferably, it is needed in the quantity of the pre-buried H profile steel shear key in the two sides of precast main beam according to design in the step 1
It is required that carrying out checking computations acquisition.
Preferably, precast main beam and prefabricated secondary beam form partially integrated concrete by girder keyway in the step 3
Shear key.
Preferably, the quantity of the step 3 and step 4 middle girder keyway and secondary beam keyway is according to requirement of engineering meter
It calculates and obtains.
(3) beneficial effect
The present invention provides a kind of precast beam shear key connecting node and connection methods.Compared with prior art, having following has
Beneficial effect:
(1), the precast beam shear key connecting node and connection method pour master by passing through cement in the two sides of precast main beam
Body, which pours, is connected with prefabricated secondary beam, and the inside of precast main beam is embedded with H profile steel shear key and fixed steel bars, H profile steel shearing resistance respectively
The two sides of key run through cement and pour the side of main body and extend to the inner cavity that cement pours main body, and the top of fixed steel bars is run through
Cement pours the side of main body and extends to the inner cavity that cement pours main body, and the two sides of precast main beam offer girder keyway,
The side of two prefabricated secondary beams, which pours, is connected with connection reinforcing bar, and one end of two connection reinforcing bars, which is run through, pours master through cement
The side of body simultaneously extends to the inner cavity that cement pours main body, and the side of two prefabricated secondary beams offers secondary beam keyway, and cement pours
The inside for building main body is embedded with U-shaped overlap joint reinforcing bar, and U-shaped overlap joint steel-bar arrangement has multiple, and U-shaped overlap joint reinforcing bar is evenly distributed in
Cement pours the inside of main body, Step 1: precast main beam pours: when precast main beam is poured, in the inner cavity of precast main beam
Then pre-buried H profile steel shear key carries out concreting molding to the fixed steel bars inside precast main beam, and wait concrete solidifying
Gu；Step 2: the installation of precast main beam: after concrete setting, the precast main beam in step 1 being lifted；Step 3: pre-
The installation of secondary beam processed: the reinforcing bar of prefabricated secondary beam is carried out by binding and fixing according to drawing, and is embedded with connection reinforcing bar, is then mixed
Solidifying soil primary concreting molding, and enter concrete in the secondary beam keyway of prefabricated secondary beam two sides, to prefabricated time after pouring molding
Beam is installed；Step 4: prefabricated secondary beam pours: after the prefabricated secondary beam in step 3 is installed, binding reinforcing bar at node
Afterwards, a layer concrete is poured at the top of precast main beam and prefabricated secondary beam, so that concrete covering precast main beam and precast main beam
The fixed steel bars at top, and enter concrete in the girder keyway of precast main beam two sides, to be solidified, the present invention such as finally
A kind of new connecting node is proposed, for prefabricated primary-secondary beam junction without disconnecting, and is utilized in precast main beam node
The pre-buried shear key in position (I-steel or other forms can be used) carries out component production, ensure that precast beam node location does not need
It disconnects, avoids the case where generating component fracture, Large-span Precast Beams can be used, it is prefabricated to be applied equally to small span
Beam has general applicability for the connecting node of precast beam, can cancel the overlap joint reinforcing bar on girder using shear key, can also subtract
The small cast-in-place segment length of prefabricated secondary beam.
Detailed description of the invention
Fig. 1 is the main view of internal structure of the present invention；
Fig. 2 is the top view of internal structure of the present invention；
Fig. 3 is the main view of precast main beam structure of the present invention；
Fig. 4 is the main view of the prefabricated secondary girder construction of the present invention.
In figure, 1- precast main beam, 2- cement pour the prefabricated secondary beam of main body, 3-, 4-H fashioned iron shear key, 5- fixed steel bars, 6-
Girder keyway, 7- connection reinforcing bar, 8- secondary beam keyway, 9-U type overlap reinforcing bar.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1-4 is please referred to, the embodiment of the present invention provides a kind of technical solution: a kind of precast beam shear key connecting node and company
Connect method, including precast main beam 1, the two sides of the precast main beam 1, which pass through cement and pour main body 2 and pour, is connected with prefabricated secondary beam
3, the side of two prefabricated secondary beams 3 offers secondary beam keyway 8, and the inside that the cement pours main body 2 is embedded with U-shaped take
Connecing reinforcing bar 9, U-shaped overlap joint reinforcing bar 9 is provided with multiple, and U-shaped overlap joint reinforcing bar 9 is evenly distributed in the inside that cement pours main body 2,
The side of two prefabricated secondary beams 3 pour is connected with connection reinforcing bar 7, connection reinforcing bar 7 be provided with it is multiple, and connect reinforcing bar 7
The two sides of prefabricated secondary beam 3 are evenly distributed in, one end of two connection reinforcing bars 7, which is run through, pours main body 2 through cement
Side simultaneously extends to the inner cavity that cement pours main body 2, and the inside of the precast main beam 1 is embedded with H profile steel shear key 4 respectively and consolidates
Determine reinforcing bar 5, the two sides of the H profile steel shear key 4, which run through cement and pour the side of main body 2 and extend to cement, pours main body 2
Inner cavity, the tops of the fixed steel bars 5 pours the side of main body 2 and extends to the inner cavity that cement pours main body 2 through cement,
The two sides of the precast main beam 1 offer girder keyway 6.
The invention also discloses a kind of connection methods of precast beam shear key connecting node, specifically includes the following steps:
Step 1: precast main beam pours: when precast main beam 1 is poured, in the pre-buried H profile steel shearing resistance in the inner cavity of precast main beam 1
Then key 4 carries out concreting molding to the fixed steel bars 5 inside precast main beam 1, and waits concrete setting, step 1
In need according to design requirement to carry out checking computations acquisition in the quantity of the pre-buried H profile steel shear key 4 in the two sides of precast main beam 1；
Step 2: the installation of precast main beam: after concrete setting, the precast main beam 1 in step 1 being lifted；
Step 3: the installation of prefabricated secondary beam: the reinforcing bar of prefabricated secondary beam 3 being carried out binding and fixing according to drawing, and is embedded with connection
Then reinforcing bar 7 carries out once-pouring of concrete molding, and enter concrete in the secondary beam keyway 8 of prefabricated 3 two sides of secondary beam,
Prefabricated secondary beam 3 is installed after pouring molding, precast main beam 1 and prefabricated secondary beam 3 pass through 6 forming portion of girder keyway in step 3
The anti-shear concrete key of point one, the length that H profile steel shear key 4 gos deep into prefabricated secondary beam 3 is material and beam institute according to shear key
Force Calculation is needed to get；
Step 4: prefabricated secondary beam pours: after the prefabricated secondary beam 3 in step 3 is installed, binding at node after reinforcing bar, pre-
The top of girder 1 and prefabricated secondary beam 3 processed pours a layer concrete, so that 1 top of concrete covering precast main beam 1 and precast main beam
Fixed steel bars 3, and enter concrete in the girder keyway 6 of 1 two sides of precast main beam, to be solidified, the step 3 such as finally
It is to be calculated to obtain according to requirement of engineering with the quantity of step 4 middle girder keyway 6 and secondary beam keyway 8.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (9)
1. the two sides of a kind of precast beam shear key connecting node, including precast main beam (1), the precast main beam (1) pass through water
Mud, which pours main body (2) and pours, is connected with prefabricated secondary beam (3), it is characterised in that: the inside of the precast main beam (1) is embedded with respectively
H profile steel shear key (4) and fixed steel bars (5), the two sides of the H profile steel shear key (4) run through cement pours main body (2) one
Side simultaneously extends to the inner cavity that cement pours main body (2), and the top of the fixed steel bars (5) pours the one of main body (2) through cement
Side simultaneously extends to the inner cavity that cement pours main body (2), and the two sides of the precast main beam (1) offer girder keyway (6).
2. a kind of precast beam shear key connecting node according to claim 1, it is characterised in that: two prefabricated secondary beams
(3) side, which pours, is connected with connection reinforcing bar (7), and one end of two connections reinforcing bar (7), which is run through, to be poured through cement
The side of main body (2) simultaneously extends to the inner cavity that cement pours main body (2).
3. a kind of precast beam shear key connecting node according to claim 1, it is characterised in that: two prefabricated secondary beams
(3) side offers secondary beam keyway (8), and the inside that the cement pours main body (2) is embedded with U-shaped overlap joint reinforcing bar (9).
4. a kind of precast beam shear key connecting node according to claim 3, it is characterised in that: the U-shaped overlap joint reinforcing bar
(9) it is provided with multiple, and U-shaped overlap joint reinforcing bar (9) is evenly distributed in the inside that cement pours main body (2).
5. a kind of precast beam shear key connecting node according to claim 1, it is characterised in that: the connection reinforcing bar (7)
It is provided with multiple, and connects reinforcing bar (7) and be evenly distributed in the two sides of prefabricated secondary beam (3).
6. a kind of connection method of precast beam shear key connecting node, it is characterised in that: specifically includes the following steps:
Step 1: precast main beam pours: when precast main beam (1) is poured, in the pre-buried H profile steel in inner cavity of precast main beam (1)
Shear key (4) then carries out concreting molding to the internal fixed steel bars (5) of precast main beam (1), and waits concrete solidifying
Gu；
Step 2: the installation of precast main beam: after concrete setting, the precast main beam (1) in step 1 being lifted；
Step 3: the installation of prefabricated secondary beam: the reinforcing bar of prefabricated secondary beam (3) being carried out binding and fixing, and the company of being embedded with according to drawing
Reinforcing bar (7) are connect, once-pouring of concrete molding is then carried out, and make concrete into the secondary beam key of prefabricated secondary beam (3) two sides
In slot (8), prefabricated secondary beam (3) is installed after pouring molding；
Step 4: prefabricated secondary beam pours: after the prefabricated secondary beam (3) in step 3 is installed, bind at node after reinforcing bar,
A layer concrete is poured at the top of precast main beam (1) and prefabricated secondary beam (3), so that concrete covering is precast main beam (1) and prefabricated
Fixed steel bars (3) at the top of girder (1), and enter concrete in the girder keyway (6) of precast main beam (1) two sides, finally etc.
To be solidified, the length that H profile steel shear key (4) gos deep into prefabricated secondary beam (3) is the stress according to needed for the material of shear key and beam
Calculating is got.
7. a kind of connection method of precast beam shear key connecting node according to claim 6, it is characterised in that: the step
It needs to carry out checking computations according to design requirement in the quantity of the pre-buried H profile steel shear key (4) in the two sides of precast main beam (1) in rapid one to obtain
?.
8. a kind of connection method of precast beam shear key connecting node according to claim 6, it is characterised in that: the step
Precast main beam (1) and prefabricated secondary beam (3) form the anti-shear concrete key of part one by girder keyway (6) in rapid three.
9. a kind of connection method of precast beam shear key connecting node according to claim 6, it is characterised in that: the step
Rapid three with the quantity of step 4 middle girder keyway (6) and secondary beam keyway (8), acquisition is calculated according to requirement of engineering.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910440637.5A CN110067306A (en) | 2019-05-24 | 2019-05-24 | A kind of precast beam shear key connecting node and connection method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910440637.5A CN110067306A (en) | 2019-05-24 | 2019-05-24 | A kind of precast beam shear key connecting node and connection method |
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