CN109098278A - The connecting structure and construction method of prefabricated beam column - Google Patents
The connecting structure and construction method of prefabricated beam column Download PDFInfo
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- CN109098278A CN109098278A CN201811134623.2A CN201811134623A CN109098278A CN 109098278 A CN109098278 A CN 109098278A CN 201811134623 A CN201811134623 A CN 201811134623A CN 109098278 A CN109098278 A CN 109098278A
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- prefabricated
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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
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The present invention relates to the connecting structure and construction method of a kind of prefabricated beam column, including prefabricated components and beam-column connection, prefabricated components are precast beam, prefabricated post, the beam-column connection is the intersection point of precast beam and prefabricated post, precast beam, prefabricated post is linked into an integrated entity by the cast-in-place concrete at beam-column connection, if the precast beam and prefabricated post end face at beam-column connection bury dry fibers, a part embedment precast beam of fiber, in prefabricated post, the other end of fiber protrudes into the cast-in-place concrete at beam-column connection, structure is reasonable for this, intensity is high, convenient construction, it can effectively avoid precast beam and the less reliable problem of prefabricated post junction intensity, assembled integral building system " strong shear capacity and weak bending capacity is fully ensured that, the design concept of stronger node ", be conducive to the development and popularization of assembled architecture system.
Description
Technical field
The present invention relates to the connecting structure and construction method of a kind of prefabricated beam column.
Background technique
Assembled architecture becomes the mode of construction based on site operation based on factory's production, is that building industry modernizes
Important content, be building move towards the industrialization, an information-based vital step.Assembled architecture, which has, to be improved quality, shortens work
Phase, it is energy saving, reduce consumption, clean manufacturing many advantages, such as.Currently, with China's rapid economic development, assembled architecture
Widely promoted.Assembled monolithic concrete structure is current China with a kind of most assembled forms, and " equivalent original
Then " be assembled monolithic concrete structure use a big core.Doctrine of equivalents is i.e.: assembled monolithic concrete structure should be basic
Reach or approach the effects equivalent of the effect being equal with cast-in-place concrete structure, especially connection type.The component of factory's production
It is superior, accomplish that the intensity of prefabricated components is equivalent easy with cast-in-place concrete, but the guarantee of connecting node intensity is one big
Problem.
It is poured based on " wet seam ", that is, after passing through in the connection type of assembled integral building structure used at present
Concrete makes to link together between prefabricated components.Although wet seam overall performance is good, exist in construction work many not true
Qualitative, construction quality is difficult to ensure.And node was the weak part in building structure originally, once it goes wrong, it is possible to
Catastrophic failure occurs.From stress, the power of connecting node needs directly to transmit by rear pouring concrete region, although new and old
Concrete linkage interface sets rough surface, but its power transmission effect is poor, and power is transmitted mainly by various dowel, pre-buried weldment.
Its stress performance reliability is not easy to guarantee especially under course under cyclic loading, and in earthquake territory, the application of fabricated construction receives greatly greatly
Limit, therefore only solve the problems, such as that assembling type node connection could allow assembled architecture to be promoted.
Summary of the invention
The present invention proposes the connecting structure and construction method of a kind of prefabricated beam column.
The solution adopted by the present invention to solve the technical problem is that a kind of connecting structure of prefabricated beam column, including it is pre-
Component and beam-column connection processed, the prefabricated components are precast beam, prefabricated post, and the beam-column connection is for precast beam and in advance
The intersection point of column processed, precast beam, prefabricated post are linked into an integrated entity by the cast-in-place concrete at beam-column connection, beam-to-column joint section
If dry fibers are buried in the precast beam at point place and prefabricated post end face, a part of fiber is embedded to precast beam, in prefabricated post, fiber
The other end protrudes into the cast-in-place concrete at beam-column connection.
Further, fiber insertion precast beam, 0.3-0.6 times that the length in prefabricated post is fiber total length, fibre
Direction and concrete linkage interface normal direction angle are tieed up less than 20 °.
Further, the fiber is appointing in steel fibre, glass fibre, polypropylene fibre, plant fiber or carbon fiber
It anticipates one kind.
Further, concrete material cast-in-place at the beam-column connection is mixed using ultra-high performance concrete or fiber
Solidifying soil.
Further, the prefabricated post includes prefabricated lower prop, prefabricated upper prop, under beam-column connection is precast beam and is prefabricated
The intersection point of column, prefabricated upper prop, precast beam, prefabricated lower prop connect to form matrix by the cast-in-place concrete at beam-column connection,
Matrix is starched by column pedestal to be connected with prefabricated upper prop.
Further, the cubic compressive strength for the mortar material that the column pedestal slurry uses is higher than prefabricated components concrete
Cubic compressive strength.
Further, the precast beam, prefabricated column end are equipped with keyway.
Further, the position of beam-column connection is arranged at girder position or secondary beam position.
A kind of construction method of the connecting structure of prefabricated beam column, comprising the following steps:
1) prefabricated components are made: carrying out the prefabricated of beam and column by design requirement, the template of precast beam and prefabricated post is installed respectively, is hung
Enter manufactured steel reinforcement cage, while placing respective built-in fitting, then the casting concrete in precast-concrete form, and carries out
Maintenance, is respectively formed precast beam and prefabricated post, wherein being inserted into fiber in its end in the molding process of prefabricated components, and prefabricated
Component carries out the dabbing of the concrete surface of rough surface during storing；
2) hoisting prefabricated column: surveying setting-out determines member position, carries out column muscle aligning, steel plate washer is levelling, for example top layer
Prefabricated post is then lifted to the corresponding position of design by hoist cable, suspender, installs prefabricated post after reinforcing bar contraposition, such as by beam-to-column joint
For the beam-to-column joint of middle layer, then prefabricated lower prop is lifted to by the corresponding position of design by hoist cable, suspender, pacified after reinforcing bar contraposition
Prefabricated lower prop is filled, and after step (4), increased step (5)；
3) precast beam: surveying setting-out is installed, precast beam is lifted into corresponding position using suspender and installed by arrangement support；
4) node connection construction: carrying out the reinforcing bar binding at beam-column connection, and set aside pre-embedded part installs stock mould at node
Plate pours after inspection is errorless and smashes concrete at node, the form removal after it reaches 70% or more normal intensity, in node concrete
Before ot-yet-hardened, by the insertion concrete of fiber partial-length, the length of fiber spacing and fiber is determined according to design；
5) install prefabricated upper prop: in corresponding column bottom position, seat is starched, and carries out column muscle aligning, by hoist cable, suspender will be prefabricated on
Column is lifted to the corresponding position of design, installs prefabricated lower prop after reinforcing bar contraposition.
In step (1), the pre-buried fiber in prefabricated components end face at beam-column connection can be formed by two methods；
First method are as follows: spile to prefabricated components end face template is formed by fiber design spacing, in precast beam section concrete
Fiber partial-length is inserted into green concrete by aperture before unhardened；
Second method are as follows: by the fiber connecting plate of part injection along its length, then by connecting plate without fiber it is exposed one
Side is tightly attached on the inside of the template for pouring prefabricated components end, and the template and connection at seam interface are removed after concreting and maintenance
Plate makes the fiber of injection connecting plate be exposed to seam interface.
Compared with prior art, the invention has the following advantages: should structure is reasonable, intensity is high, convenient construction,
It can effectively avoid precast beam and the less reliable problem of prefabricated post junction intensity, fully ensured that assembled integral building system
The design concept of " strong shear capacity and weak bending capacity, stronger node ", is conducive to the development and popularization of assembled architecture system.
Detailed description of the invention
The invention patent is further illustrated with reference to the accompanying drawing.
Fig. 1 is top layer beam, column end bay attachment structure schematic diagram；
Fig. 2 is top layer beam, column centre mid-span structural schematic diagram；
Fig. 3 is middle layer beam, column end bay attachment structure schematic diagram；
Fig. 4 is middle layer beam, column centre mid-span schematic diagram；
In figure:
1- precast beam；2- prefabricated post；The prefabricated lower prop of 201-；The prefabricated upper prop of 202-；3- connecting node；4- fiber；5- keyway；6- connects
Connect reinforcing bar.
Specific embodiment
The present invention is further described with reference to the accompanying drawings and detailed description.
As shown in Figs 1-4, a kind of connecting structure of prefabricated beam column, including prefabricated components and beam-column connection,
The prefabricated components are precast beam, prefabricated post, and the beam-column connection is the intersection point of precast beam and prefabricated post, precast beam, pre-
Column processed is linked into an integrated entity by the cast-in-place concrete at beam-column connection, precast beam and prefabricated styletable at beam-column connection
If dry fibers are buried in face, in a part embedment precast beam of fiber, prefabricated post, the other end of fiber protrudes into beam-column connection
In the cast-in-place concrete at place, it is connected to fiber between new-old concrete interface.
In the present embodiment, fiber insertion precast beam, the 0.3-0.6 that the length in prefabricated post is fiber total length
Times, less than 20, the length of fiber spacing and fiber is true according to design for machine direction and concrete linkage interface normal direction angle
It is fixed.
In the present embodiment, be improve after-pouring part anchor force, the non-intrusive end of fiber be provided with hook portion, bulb or
For waveform；Or radially spaced several annular grooves of setting on fiber.
In the present embodiment, the fiber is in steel fibre, glass fibre, polypropylene fibre, plant fiber or carbon fiber
Any one, if fiber be straight steel fibre, the part of the after-pouring of fiber should be longer than insertion portion, so that fiber is preceding
Phase pour with the later period pour in anchor force it is balanced.
In the present embodiment, concrete material cast-in-place at the beam-column connection uses ultra-high performance concrete or fibre
Tie up concrete.
In the present embodiment, the prefabricated post includes prefabricated lower prop, prefabricated upper prop, and beam-column connection is for precast beam and in advance
The intersection point of lower prop processed, prefabricated upper prop, precast beam, prefabricated lower prop connect to form base by the cast-in-place concrete at beam-column connection
Body, matrix is starched by column pedestal to be connected with prefabricated upper prop.
In middle layer frame structure, the connection of prefabricated beam column component is divided into two parts, respectively precast beam and it is prefabricated under
The connection of column and the connection of prefabricated upper prop；First part are as follows: the connection of precast beam and prefabricated lower prop.By at connecting node
Cast-in-place concrete precast beam and prefabricated upper prop are linked into an integrated entity.It is pre- in cast-in-place node upper surface and upper prop corresponding position simultaneously
Bury partial-length fiber；Second part are as follows: the connection of prefabricated upper prop.This is carried out after the completion of being connected to first part's connection, is passed through
It is starched in column pedestal, prefabricated upper prop is installed.
In the present embodiment, the cubic compressive strength for the mortar material that the column pedestal slurry uses is mixed higher than prefabricated components
Solidifying soil cubic compressive strength.
In the present embodiment, the precast beam, prefabricated column end are equipped with keyway, and keyway size is determined by design.
In the present embodiment, the position of beam-column connection is arranged at girder position or secondary beam position, presses at node
Connection lengthwise rib is set according to design requirement, mechanical connection can be used in the connection type of connection lengthwise rib, sleeve grouting is connected, welded, taking
The modes such as connect.
A kind of construction method of the connecting structure of prefabricated beam column, comprising the following steps:
1) prefabricated components are made: carrying out the prefabricated of beam and column by design requirement, the template of precast beam and prefabricated post is installed respectively, is hung
Enter manufactured steel reinforcement cage, while placing respective built-in fitting, then the casting concrete in precast-concrete form, and carries out
Maintenance, is respectively formed precast beam and prefabricated post, wherein being inserted into fiber in its end in the molding process of prefabricated components, and prefabricated
Component carries out the dabbing of the concrete surface of rough surface during storing；
2) hoisting prefabricated column: surveying setting-out determines member position, carries out column muscle aligning, steel plate washer is levelling, for example top layer
Prefabricated post is then lifted to the corresponding position of design by hoist cable, suspender, installs prefabricated post after reinforcing bar contraposition, such as by beam-to-column joint
For the beam-to-column joint of middle layer, then prefabricated lower prop is lifted to by the corresponding position of design by hoist cable, suspender, pacified after reinforcing bar contraposition
Prefabricated lower prop is filled, and after step (4), increased step (5)；
3) precast beam: surveying setting-out is installed, precast beam is lifted into corresponding position using suspender and installed by arrangement support；
4) node connection construction: carrying out the reinforcing bar binding at beam-column connection, and set aside pre-embedded part installs stock mould at node
Plate pours after inspection is errorless and smashes concrete at node, the form removal after it reaches 70% or more normal intensity, in node concrete
Before ot-yet-hardened, by the insertion concrete of fiber partial-length, the length of fiber spacing and fiber is determined according to design；
5) install prefabricated upper prop: in corresponding column bottom position, seat is starched, and carries out column muscle aligning, by hoist cable, suspender will be prefabricated on
Column is lifted to the corresponding position of design, installs prefabricated lower prop after reinforcing bar contraposition.
In step (1), the pre-buried fiber in prefabricated components end face at beam-column connection can be formed by two methods；
First method are as follows: spile to prefabricated components end face template is formed by fiber design spacing, in precast beam section concrete
Fiber partial-length is inserted into green concrete by aperture before unhardened；
Second method are as follows: by the fiber connecting plate of part injection along its length, then by connecting plate without fiber it is exposed one
Side is tightly attached on the inside of the template for pouring prefabricated components end, and the template and connection at seam interface are removed after concreting and maintenance
Plate makes the fiber of injection connecting plate be exposed to seam interface.
Above-listed preferred embodiment, has been further described the object, technical solutions and advantages of the present invention, is answered
Understand, the foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of connecting structure of prefabricated beam column, including prefabricated components and beam-column connection, it is characterised in that: described
Prefabricated components are precast beam, prefabricated post, and the beam-column connection is the intersection point of precast beam and prefabricated post, precast beam, prefabricated post
It is linked into an integrated entity by the cast-in-place concrete at beam-column connection, the precast beam and prefabricated post end face at beam-column connection bury
If a part embedment precast beam of fiber, in prefabricated post, the other end of fiber protrudes at beam-column connection if dry fibers
In cast-in-place concrete.
2. the connecting structure of prefabricated beam column according to claim 1, it is characterised in that: the fiber insertion is prefabricated
Length in beam, prefabricated post is 0.3-0.6 times of fiber total length, machine direction and concrete linkage interface normal direction angle
Less than 20 °.
3. the connecting structure of prefabricated beam column according to claim 2, it is characterised in that: the fiber is that steel is fine
Any one in dimension, glass fibre, polypropylene fibre, plant fiber or carbon fiber.
4. the connecting structure of prefabricated beam column according to claim 1, it is characterised in that: the beam-column connection
Locate cast-in-place concrete material using ultra-high performance concrete or fiber concrete.
5. the connecting structure of prefabricated beam column according to claim 1, it is characterised in that: the prefabricated post includes pre-
Lower prop processed, prefabricated upper prop, beam-column connection are the intersection point of precast beam and prefabricated lower prop, prefabricated upper prop, precast beam, prefabricated lower prop
It connects to form matrix by the cast-in-place concrete at beam-column connection, matrix is starched by column pedestal to be connected with prefabricated upper prop.
6. the connecting structure of prefabricated beam column according to claim 5, it is characterised in that: the column pedestal slurry uses
Mortar material cubic compressive strength be higher than prefabricated components compressive strength of concrete.
7. the connecting structure of prefabricated beam column according to claim 1, it is characterised in that: the precast beam, prefabricated
Column end is equipped with keyway.
8. the connecting structure of prefabricated beam column according to claim 1, it is characterised in that: the position of beam-column connection
It installs at girder position or secondary beam position.
9. a kind of construction method of the connecting structure of prefabricated beam column, using as claimed in claim 5 prefabricated
The connecting structure of beam column, which comprises the following steps:
1) prefabricated components are made: carrying out the prefabricated of beam and column by design requirement, the template of precast beam and prefabricated post is installed respectively, is hung
Enter manufactured steel reinforcement cage, while placing respective built-in fitting, then the casting concrete in precast-concrete form, and carries out
Maintenance, is respectively formed precast beam and prefabricated post, wherein being inserted into fiber in its end in the molding process of prefabricated components, and prefabricated
Component carries out the dabbing of the concrete surface of rough surface during storing；
2) hoisting prefabricated column: surveying setting-out determines member position, carries out column muscle aligning, steel plate washer is levelling, for example top layer
Prefabricated post is then lifted to the corresponding position of design by hoist cable, suspender, installs prefabricated post after reinforcing bar contraposition, such as by beam-to-column joint
For the beam-to-column joint of middle layer, then prefabricated lower prop is lifted to by the corresponding position of design by hoist cable, suspender, pacified after reinforcing bar contraposition
Prefabricated lower prop is filled, and after step (4), increased step (5)；
3) precast beam: surveying setting-out is installed, precast beam is lifted into corresponding position using suspender and installed by arrangement support；
4) node connection construction: carrying out the reinforcing bar binding at beam-column connection, and set aside pre-embedded part installs stock mould at node
Plate pours after inspection is errorless and smashes concrete at node, the form removal after it reaches 70% or more normal intensity, in node concrete
Before ot-yet-hardened, by the insertion concrete of fiber partial-length, the length of fiber spacing and fiber is determined according to design；
5) install prefabricated upper prop: in corresponding column bottom position, seat is starched, and carries out column muscle aligning, by hoist cable, suspender will be prefabricated on
Column is lifted to the corresponding position of design, installs prefabricated lower prop after reinforcing bar contraposition.
10. the construction method of the connecting structure of prefabricated beam column according to claim 1, it is characterised in that:
In step (1), the pre-buried fiber in prefabricated components end face at beam-column connection can be formed by two methods；
First method are as follows: spile to prefabricated components end face template is formed by fiber design spacing, in precast beam section concrete
Fiber partial-length is inserted into green concrete by aperture before unhardened；
Second method are as follows: by the fiber connecting plate of part injection along its length, then by connecting plate without fiber it is exposed one
Side is tightly attached on the inside of the template for pouring prefabricated components end, and the template and connection at seam interface are removed after concreting and maintenance
Plate makes the fiber of injection connecting plate be exposed to seam interface.
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| CN201811134623.2A CN109098278A (en) | 2018-09-28 | 2018-09-28 | The connecting structure and construction method of prefabricated beam column |
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| CN201811134623.2A CN109098278A (en) | 2018-09-28 | 2018-09-28 | The connecting structure and construction method of prefabricated beam column |
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| CN110130487A (en) * | 2019-05-24 | 2019-08-16 | 广东中建新型建筑构件有限公司 | A kind of prefabricated primary and secondary beam connecting node and connection method |
| CN110616803A (en) * | 2019-07-19 | 2019-12-27 | 三一筑工科技有限公司 | Fabricated building structure system and construction method |
| CN110847355A (en) * | 2019-12-11 | 2020-02-28 | 山东海龙建筑科技有限公司 | Novel efficient mounting node assembly integral beam column and production design method thereof |
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Application publication date: 20181228 |