CN209670192U - A kind of prefabricated column of non-interconnected grouting - Google Patents
A kind of prefabricated column of non-interconnected grouting Download PDFInfo
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- CN209670192U CN209670192U CN201920185348.0U CN201920185348U CN209670192U CN 209670192 U CN209670192 U CN 209670192U CN 201920185348 U CN201920185348 U CN 201920185348U CN 209670192 U CN209670192 U CN 209670192U
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- grouting
- reinforcing bar
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Abstract
The utility model discloses a kind of prefabricated column of non-interconnected grouting, including upper layer cylinder and lower layer's cylinder, sleeve and longitudinal top bars group are embedded in upper strata post body；Sleeve is located at the lower end of upper layer cylinder, and sleeve is equipped with inner cavity；The upper surface that the lower end of top bars group passes through sleeve is inserted into inner cavity；Lower layer's reinforcing bar group corresponding with top bars group is embedded in lower floor's post body；The upper end of lower layer's reinforcing bar group is stretched out the upper surface of lower layer's cylinder upwards and is inserted into inner cavity；Top bars group and lower layer's reinforcing bar group are fixed through grouting in the lumen, and sleeve is individually in the milk.The type of attachment of the prefabricated column of the non-interconnected grouting of the utility model is simple, and power transmission is direct, and stress is clear, it saved the material of sleeve, reduced construction precision requirement and grouting material requirement, reduce difficulty of construction, it is ensured that the compactness of sleeve, to guarantee construction quality.
Description
Technical field
The utility model belongs to precast concrete technical field, and in particular to a kind of assembled of non-interconnected grouting is pre-
Column processed.
Background technique
Prefabricated concrete structure has high industrialization degree, saving material, small, the easy for construction, situ wet operation of pollution
Amount and number of workers is few, prefabricated components quality convenient for control, construction period is short, investment the advantages that gain quick return, be novel building work
The direction of industryization development.The most common structural system of prefabricated concrete structure is assembling frame structure, and core technology is to want
The connection type of bean column node is solved, wherein key is how the longitudinal reinforcement of the prefabricated Column border node of upper and lower level and seam crossing connects.
Reinforced bar sleeve grouting connection common at present is that upper and lower level vertical applied force reinforcing bar is passed through sleeve connection, a reinforcing bar
A corresponding grout sleeve, specific embodiment: in plant produced, the lower end of the reinforcing bar of precast column unit is protruded into pre-buried
Certain length is reserved in the upper end of grout sleeve, prefabricated post reinforcing bar, and in building-site, bean column node is cast-in-place and reaches some strength
Afterwards, every vertical reinforcement of lower layer is inserted into pre-buried sleeve by upper layer precast column unit respectively by lifting, finally by more sets
Cylinder connection grouting way fills sleeve with high-intensitive microdilatancy grouting material.More sleeve connection grouting, are a precast column unit
When sleeve is in the milk at the scene, only from the grouting port slip casting of a sleeve, grouting material is connected to grouting between sleeve, from other slip castings
Mouth and grout outlet outflow.
In above-mentioned reinforcing bar and the structure of sleeve grouting connection, the quantity of reinforcing bar and sleeve be it is one-to-one, i.e., it is single
Reinforcing bar one sleeve of configuration, the common 12-16 sleeve of configuration of a precast column unit, sleeve quantitative requirement are more；Also, it is this
Connection structure is connected to grouting way using more sleeves, it is difficult to guarantee the Grouted density of multiple sleeves, construction quality cannot be guaranteed；
In addition, in this connection structure, top bars are protruded into sleeve and are connect with lower layer reinforcing bar, pass through the bite force of sleeve and grouting material
Load is transmitted, wherein force-mechanism is indefinite always, is unfavorable for the development and application of structural analysis He the connection.
Therefore, the reinforced bar sleeve grouting connection that above-mentioned prefabricated column uses, which exists, requires high, sleeve to construction precision
At high cost, the connection indefinite problem of stress.
Utility model content
To solve the problem above-mentioned, the utility model provides a kind of prefabricated column of non-interconnected grouting, connection
Form is simple, and power transmission is direct, and stress is clear, has saved the material of sleeve, has reduced construction precision requirement and grouting material requirement, can
To guarantee the compactness of sleeve, to guarantee construction quality.
The utility model uses following technical scheme:
A kind of prefabricated column of non-interconnected grouting, including upper layer cylinder and lower layer's cylinder；
Sleeve and longitudinal top bars group are embedded in the upper strata post body；The sleeve is located at the upper layer cylinder
Lower end, the sleeve are equipped with inner cavity；The upper surface that the lower end of the top bars group passes through the sleeve is inserted into the inner cavity
In；The top bars group includes several upper layer locating plates and several upper layer vertical reinforcements；It is uniformly set on the upper layer locating plate
There are several first positioning holes；The upper surface of the sleeve corresponds to the first positioning hole equipped with several through-holes；The upper layer is vertical
The lower end of reinforcing bar sequentially passes through first positioning hole, through-hole and is inserted into the inner cavity；It is also arranged on the upper layer vertical reinforcement
The sealing ring that the through-hole is sealed；Each upper layer vertical reinforcement passes through third stirrup banding；It is also embedded in the upper strata post body
The distributing bar of several longitudinal directions, each distributing bar are disposed around the periphery of the sleeve, each distributing bar by the first stirrup into
Row banding；
Lower layer's reinforcing bar group corresponding with the top bars group is embedded in the lower floor's post body；Lower layer's reinforcing bar group
Upper end stretch out the upper surface of lower layer's cylinder upwards and be inserted into the inner cavity；Under lower layer's reinforcing bar group includes several
Layer locating plate and several lower layer's vertical reinforcements is uniformly provided with several second location holes on lower layer's locating plate, and the lower layer is perpendicular
The second location hole is passed through to the upper end of reinforcing bar to be inserted into the inner cavity；Each lower layer's vertical reinforcement passes through several second stirrup hoops
Tightly.
It is further used as the improvement of technical solutions of the utility model, lower layer's cylinder is from bottom to top laminated and sets prefabricated
Section and Cast-in-Situ Segment；The lower end of lower layer's reinforcing bar group is embedded in the precast section, and the upper end of lower layer's reinforcing bar group is described in insertion
The insertion end of inner cavity is poured to form the Cast-in-Situ Segment between the insertion end and the precast section.
It is further used as the improvement of technical solutions of the utility model, the upper end of the sleeve is equipped in communication with the inner cavity
Grout outlet, the lower end of the sleeve are equipped with the Grouting Pipe being connected to inner cavity.
It is further used as the improvement of technical solutions of the utility model, the central axes and water of the grout outlet and/or Grouting Pipe
The angle of plane is 15 ° to 55 °.
It is further used as the improvement of technical solutions of the utility model, the junction of the grout outlet and the sleeve is wedge shape
Inclined-plane.
It is further used as the improvement of technical solutions of the utility model, further includes several 4th stirrups and several 5th stirrups；
Lower layer's reinforcing bar group is equipped with several groups, and the 4th stirrup sequentially passes through each lower layer's reinforcing bar group and around lopping to tighten；Institute
It states sleeve, the quantity of top bars group, position to correspond with the quantity of lower layer's reinforcing bar group, position, the 5th hoop
Muscle sequentially passes through each top bars group and around lopping to tighten.
It is further used as the improvement of technical solutions of the utility model, further includes dismountable point storehouse grouting pipe, described point
Storehouse grouting pipe is inserted between lower layer's cylinder and upper layer cylinder to separate each sleeve, the both ends for dividing storehouse grouting pipe
Exceed lower layer's cylinder/upper layer cylinder end face, it is described that storehouse grouting pipe is divided to extract dismounting out before last time slip casting.
Compared with prior art, the utility model has the following beneficial effects:
It is that single steel bar configures a sleeve, sleeve quantitative requirement is more 1. existing reinforcing bar and sleeve grouting connect；And
In the present invention, a sleeve can dock lower layer's reinforcing bar group, it can while more reinforcing bars are docked, subtract on the whole
The usage quantity for having lacked sleeve reduces cost, and has used upper layer locating plate and lower layer's locating plate respectively to upper layer vertical steel
Muscle and lower layer's vertical reinforcement are positioned, and subsequent docking is facilitated, and reduce required precision when docking；
2. generalling use more sleeve connection grouting way in the prior art, it is difficult to guarantee the Grouted density of multiple sleeves,
Construction quality cannot be guaranteed；And can be individually in the milk in the utility model, when sleeve is in the milk, reduce the construction of grouting
Difficulty, it is ensured that the compactness of the grouting in sleeve guarantees construction quality；
3. the top bars group and lower layer's reinforcing bar group in the utility model realize to connect and take that the connection can guarantee in sleeve
Structure holistic resistant behavior, the type of attachment is simple, and power transmission is direct, and stress is clear.
Detailed description of the invention
The technology of the utility model is described in further detail with reference to the accompanying drawings and detailed description:
Fig. 1 is the utility model overall structure diagram；
Fig. 2 is the structural schematic diagram of the utility model upper layer cylinder；
Fig. 3 is the section view in Fig. 1 at A；
Fig. 4 is the section view in Fig. 1 at B；
Fig. 5 is the structural schematic diagram of lower layer's cylinder of the utility model；
Fig. 6 is the schematic diagram in lower layer's reinforcing bar group insertion sleeve of the utility model.
Appended drawing reference:
The upper layer 1- cylinder；2- lower layer cylinder；21- precast section；22- Cast-in-Situ Segment；3- sleeve；31- grout outlet；32- Grouting Pipe；
The inner cavity 33-；4- top bars group；The upper layer 41- locating plate；The upper layer 42- vertical reinforcement；411- first positioning hole；421- sealing ring；
422- third stirrup；5- distributing bar；The first stirrup of 51-；6- lower layer reinforcing bar group；61- lower layer locating plate；611- second is positioned
Hole；62- lower layer vertical reinforcement；The second stirrup of 622-；63- insertion end；The 4th stirrup of 7-；The 5th stirrup of 8-；9- divides storehouse grouting
Pipe.
Specific embodiment
It is carried out below with reference to technical effect of the embodiment and attached drawing to the design of the utility model, specific structure and generation
Clear, complete description, to be completely understood by the purpose of this utility model, scheme and effect.It should be noted that not conflicting
In the case where, the features in the embodiments and the embodiments of the present application can be combined with each other.What is used everywhere in attached drawing is identical
Appended drawing reference indicates the same or similar part.
It should be noted that unless otherwise specified, when a certain feature referred to as " fixation ", " connection " are in another feature,
It can directly fix, be connected to another feature, and can also fix, be connected to another feature indirectly.In addition, this
The descriptions such as upper and lower, left and right used in utility model are only the phase relative to each component part of the utility model in attached drawing
For mutual positional relationship.
Referring to figs. 1 to Fig. 6, a kind of prefabricated column of non-interconnected grouting, including upper layer cylinder 1 and lower layer's cylinder 2.
Wherein, as shown in Figure 1 to Figure 4 and shown in Fig. 6, upper layer cylinder 1 is prefabricated cylinder, is embedded with set in the upper layer cylinder 1
Cylinder 3 and longitudinal top bars group 4, the sleeve 3 are located at the lower end of the upper layer cylinder 1, and the sleeve 3 is equipped with Open Side Down
Inner cavity 33, the upper surface that the lower end of the top bars group 4 passes through the sleeve 3 is inserted into the inner cavity 33.
The distributing bar 5 of several longitudinal directions is also embedded in the upper layer cylinder 1, each distributing bar 5 is disposed around the set
The periphery of cylinder 3, each distributing bar 5 carry out banding by the first stirrup 51, and the quantity of distributing bar 5 can be three, four, five
Root or even more roots, quantity are selected according to specific service condition, as the utility model preferred embodiment, often
One sleeve 3 is externally provided with four distributing bars 5.First stirrup 51 is a molding stirrup, and You Yigen reinforcing bar surrounds each construction
5 bending forming of reinforcing bar binds each distributing bar 5 to together to tighten, and is used for confined concrete pressurized zone.
Specifically, the top bars group 4 includes that several upper layer locating plates 41 and several upper layers arranged in parallel are perpendicular
To reinforcing bar 42, it is uniformly provided with the first positioning hole 411 passed through for upper layer vertical reinforcement 42 on the upper layer locating plate 41, each first
Location hole 411 is in quincunx distribution around same axis, and upper layer locating plate 41 uses iron material or steel material；The sleeve 3
Upper surface correspond to the first positioning hole 411 and be equipped with the through-hole that passes through for top bars group 4, the lower end of upper layer vertical reinforcement 42
It is inserted into the inner cavity 33 after sequentially passing through first positioning hole 411, through-hole, the upper layer vertical reinforcement 42 being inserted into inner cavity 33 is covering
The inside of cylinder 3 is also cased with upper layer locating plate 41, and the positioning of each upper layer vertical reinforcement 42 is realized by upper layer locating plate 41, is prevented
Each upper layer vertical reinforcement 42 shifts, and leads to discontinuity.Also being arranged on the upper layer vertical reinforcement 42 will be described logical
The sealing ring 421 of hole sealing, it is further that upper layer vertical reinforcement 42 and sleeve 3 is fixed.
The quantity of upper layer vertical reinforcement 42 in each top bars group 4 increases and decreases according to specific service condition, can
To be three, four, five or even more roots.As the utility model preferred embodiment, quantity is the six roots of sensation, corresponding
, it is opened up on upper layer locating plate 41 there are six first positioning hole 411.
Banding also is carried out by several third stirrups 422 outside each upper layer vertical reinforcement 42, third stirrup 422 is annulus, if
Dry 422 sets of stirrup of third constrains top bars group 4, and can constrain upper layer cylinder 1 in top bars group 4
Pressurized zone enhances its mechanical property.
Wherein, it as shown in Fig. 1, Fig. 5 and Fig. 6, is embedded in lower layer's cylinder 2 corresponding with the top bars group 4
Lower layer's reinforcing bar group 6, the upper end of lower layer's reinforcing bar group 6 stretches out the upper surface of lower layer's cylinder 2 upwards, and is inserted into described
In inner cavity 33.
Top bars group 4 and lower layer's reinforcing bar group 6 are fixed in inner cavity 33 through grouting；The inner cavity 33 of the sleeve is individually filled
Slurry guarantees construction quality to guarantee the compactness of grouting.
Lower layer's cylinder 2 includes precast section 21 and Cast-in-Situ Segment 22, and the lower end of lower layer's reinforcing bar group 6 is embedded in described pre-
In section 21 processed, the lower end of lower layer's reinforcing bar group 6 is the insertion end 63 for being inserted into the inner cavity 33；Through pouring between insertion end 63 and precast section
It builds to form the Cast-in-Situ Segment 22.Precast section 21 is first outer pre-fabricated on construction ground, then is transported to construction site, according to specific
Height has poured Cast-in-Situ Segment 22, and when building reserves one end lower layer reinforcing bar group 6 of upper end, connects for being inserted into sleeve 3 and costs a layer steel
Muscle group 4.
Specifically, lower layer's reinforcing bar group 6 includes that several lower layer's locating plates 61 and several lower layers arranged in parallel are perpendicular
To reinforcing bar 62, the second location hole 611 passed through for lower layer's vertical reinforcement 62 is uniformly provided on lower layer's locating plate 61, respectively
Lower layer's vertical reinforcement 62 by second location hole 611 pass through lower layer's locating plate 61, each lower layer's vertical reinforcement 62 it is upper
End is stretched out the upper surface of lower layer's cylinder 2 upwards and is inserted into the inner cavity 33, and each lower layer's vertical reinforcement 62 also passes through second
Stirrup 622 carries out banding, and it is also annulus that the second stirrup 622 and third stirrup 422 are similar, is sleeved on the outer of lower layer's reinforcing bar group 6
Week lower layer's reinforcing bar group 6 is carried out tightening fixation.The quantity of lower layer's vertical reinforcement 62 in lower layer's reinforcing bar group 6 can be according to specific
Service condition determine, can with three, four, five or even more roots.As the utility model preferred embodiment, number
Amount is the six roots of sensation, correspondingly, is set on lower layer's locating plate 61 there are six second location hole.Lower layer's locating plate 61 can be used iron material or
Steel material.
The prefabricated column of the non-interconnected grouting of the utility model further includes several 4th stirrups 7 and several 5th stirrups
8；Lower layer's reinforcing bar group 6 is equipped with several groups, and the 4th stirrup 7 sequentially passes through each lower layer's reinforcing bar group 6 and around lopping to tie up
Tightly.The sleeve 3, the quantity of top bars group 4, position are corresponded with the quantity of lower layer's reinforcing bar group 6, position, institute
It states the 5th stirrup 8 and sequentially passes through each top bars group 4 and around lopping to tighten；Each sleeve 3 is individually in the milk.4th
Stirrup 7 and the 5th stirrup 8 are annulus.7 sets of multiple 4th stirrups connect each top bars group 4 across each top bars group 4
It is integral, it is used for confined concrete pressurized zone；8 sets of multiple 5th stirrups are across each lower layer's reinforcing bar group 6 by each lower layer's reinforcing bar
Group 6 is linked to be entirety, is used for confined concrete pressurized zone.As the utility model preferred embodiment, top bars group 4 is set
There are four, the correspondence of lower layer's reinforcing bar group 6 also is provided with four, and sleeve 3 is again provided with four.
By above-mentioned structure, top bars group 4 and lower layer's reinforcing bar group 6 realize to connect and take that the connection can be protected in sleeve 3
Structure holistic resistant behavior is demonstrate,proved, the type of attachment is simple, and power transmission is direct, and stress is clear.And due to the sleeve of the utility model 3
Compared with common sleeve, opening diameter is bigger, facilitates insertion lower layer's reinforcing bar group 6, reduces the requirement of construction precision, and due to
There are a upper layer locating plate 41 and lower layer's locating plate 61, upper layer vertical reinforcement 42 can be docked accurately with lower layer vertical reinforcement 62, stress
More preferably.
Specifically, sleeve 3 is hollow cylinder, and lower end is equipped with opening for the insertion of lower layer's reinforcing bar group 6, inner cavity 33
It also is cylinder, correspondingly, it is a circle on the whole that the outer profile of upper layer locating plate 41, which is the circle being adapted with the inner cavity 33,
The thin plate of shape.The upper end of the sleeve 3 is equipped with the grout outlet 31 being connected to the inner cavity 33, the grout outlet 31 and the sleeve
3 junction is tapered ramp, is conducive to improve grouting material compactness, guarantees construction quality.The lower end of the sleeve 3 be equipped with
The Grouting Pipe 32 that inner cavity 33 is connected to.The Grouting Pipe 32 of lower end and grouter are attached grouting, grouting in sleeve 3 in grouting
Full post-grouting material is overflowed from grout outlet 31, then is disconnected the connection with grouter and blocked Grouting Pipe 32 and grout outlet 31.
The grout outlet 31 and/or the central axes of Grouting Pipe 32 and the angle of horizontal plane are 15 ° to 55 °, are conducive to improve
Grouting material compactness guarantees construction quality.As the utility model preferred embodiment, which is selected as 45 °.
In addition, the prefabricated column of the non-interconnected grouting of the utility model further includes dismountable point storehouse grouting pipe 9,
Described point of storehouse grouting pipe 9 separates each sleeve 3 between lower layer's cylinder 2 and upper layer cylinder 1, and divides storehouse grouting pipe 9
Both ends exceed the end face of 2/ upper layer cylinder 1 of lower layer's cylinder, described point of storehouse grouting pipe 9 is extracted out before last time slip casting and is torn open
It removes.Described point of storehouse grouting pipe 9 is in the milk for separating sleeve 3, separates each sleeve 3 in grouting, prevents from leaking out
Grouting material interfere the grouting of other sleeves 3.This divides 9 diameter range of storehouse grouting pipe should can at 20~40 millimeters, slip casting
Before the last one 3 slip casting of sleeve, to be in the milk again most after point storehouse grouting pipe 9 is extracted out by being in the milk clockwise or counterclockwise
The latter sleeve 3, to guarantee the density of grouting.
Other contents of the prefabricated column of non-interconnected grouting described in the utility model are referring to the prior art, herein not
It repeats again.
The above descriptions are merely preferred embodiments of the present invention, not makees in any form to the utility model
Limitation, therefore it is all without departing from the content of the technical scheme of the utility model, implement according to the technical essence of the utility model to above
Any modification, equivalent variations and modification, are still within the scope of the technical solutions of the present invention made by example.
Claims (7)
1. a kind of prefabricated column of non-interconnected grouting, including upper layer cylinder and lower layer's cylinder, it is characterised in that:
Sleeve and longitudinal top bars group are embedded in the upper strata post body；The sleeve is located under the upper layer cylinder
End, the sleeve are equipped with inner cavity；The upper surface that the lower end of the top bars group passes through the sleeve is inserted into the inner cavity；
The top bars group includes several upper layer locating plates and several upper layer vertical reinforcements；If being uniformly provided on the upper layer locating plate
Dry first positioning hole；The upper surface of the sleeve corresponds to the first positioning hole equipped with several through-holes；The upper layer vertical reinforcement
Lower end sequentially pass through first positioning hole, through-hole and be inserted into the inner cavity；It is also arranged on the upper layer vertical reinforcement by institute
State the sealing ring of through-hole sealing；Each upper layer vertical reinforcement passes through third stirrup banding；It is also embedded in the upper strata post body several
The distributing bar of root longitudinal direction, each distributing bar are disposed around the periphery of the sleeve, and each distributing bar is bound round by the first stirrup
Tightly；
Lower layer's reinforcing bar group corresponding with the top bars group is embedded in the lower floor's post body；Lower layer's reinforcing bar group it is upper
End is stretched out the upper surface of lower layer's cylinder upwards and is inserted into the inner cavity；Lower layer's reinforcing bar group includes that several lower layers are fixed
Bit slice and several lower layer's vertical reinforcements are uniformly provided with several second location holes, lower layer's vertical steel on lower layer's locating plate
The upper end of muscle passes through the second location hole and is inserted into the inner cavity；Each lower layer's vertical reinforcement passes through several second stirrup bandings；
The top bars group and lower layer's reinforcing bar group are fixed in the inner cavity through grouting, and the sleeve is individually in the milk.
2. the prefabricated column of non-interconnected grouting according to claim 1, it is characterised in that: lower layer's cylinder is under
And upper stacking and the precast section and Cast-in-Situ Segment that set；The lower end of lower layer's reinforcing bar group is embedded in the precast section, lower layer's reinforcing bar
Group upper end be the insertion end for being inserted into the inner cavity, poured between the insertion end and the precast section to be formed it is described cast-in-place
Section.
3. the prefabricated column of non-interconnected grouting according to claim 1, it is characterised in that: the upper end of the sleeve is set
There is grout outlet in communication with the inner cavity, the lower end of the sleeve is equipped with the Grouting Pipe being connected to inner cavity.
4. the prefabricated column of non-interconnected grouting according to claim 3, it is characterised in that: the grout outlet and/or
The central axes of Grouting Pipe and the angle of horizontal plane are 15 ° to 55 °.
5. the prefabricated column of non-interconnected grouting according to claim 3, it is characterised in that: the grout outlet with it is described
The junction of sleeve is tapered ramp.
6. the prefabricated column of non-interconnected grouting according to any one of claim 1 to 5, it is characterised in that: also wrap
Include several 4th stirrups and several 5th stirrups；Lower layer's reinforcing bar group is equipped with several groups, and the 4th stirrup sequentially passes through respectively
Lower layer's reinforcing bar group simultaneously surround lopping to tighten；The sleeve, the quantity of top bars group, position with lower layer's reinforcing bar group
Quantity, position correspond, and the 5th stirrup sequentially passes through each top bars group and around lopping to tighten.
7. the prefabricated column of non-interconnected grouting according to claim 6, it is characterised in that: further include dismountable point
Storehouse grouting pipe, described point of storehouse grouting pipe is inserted between lower layer's cylinder and upper layer cylinder to separate each sleeve, described
The both ends of point storehouse grouting pipe exceed lower layer's cylinder/upper layer cylinder end face, described that storehouse grouting pipe is divided to infuse in last time
Extraction is removed before slurry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920185348.0U CN209670192U (en) | 2019-02-01 | 2019-02-01 | A kind of prefabricated column of non-interconnected grouting |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920185348.0U CN209670192U (en) | 2019-02-01 | 2019-02-01 | A kind of prefabricated column of non-interconnected grouting |
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| CN209670192U true CN209670192U (en) | 2019-11-22 |
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ID=68568497
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109853847A (en) * | 2019-02-01 | 2019-06-07 | 广州建筑产业研究院有限公司 | A kind of prefabricated column of non-interconnected grouting |
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2019
- 2019-02-01 CN CN201920185348.0U patent/CN209670192U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109853847A (en) * | 2019-02-01 | 2019-06-07 | 广州建筑产业研究院有限公司 | A kind of prefabricated column of non-interconnected grouting |
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