CN211523536U - Prefabricated post nodal connection structure - Google Patents
Prefabricated post nodal connection structure Download PDFInfo
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- CN211523536U CN211523536U CN201922341060.0U CN201922341060U CN211523536U CN 211523536 U CN211523536 U CN 211523536U CN 201922341060 U CN201922341060 U CN 201922341060U CN 211523536 U CN211523536 U CN 211523536U
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Abstract
The utility model provides a prefabricated post nodal connection structure, including first prefabricated post, the prefabricated post of second and stirrup. The first end of the first prefabricated column is opposite to the second end of the second prefabricated column and is arranged at a certain distance; a first end of the first prefabricated column is provided with a first prefabricated column steel bar which extends outwards; and a second end of the second prefabricated column is provided with a second prefabricated column steel bar extending outwards. The first prefabricated column steel bar is in lap joint with the second prefabricated column steel bar, and the stirrup is bound at the lap joint part; ultrahigh-performance concrete is poured between the first end of the first prefabricated column and the second end of the second prefabricated column; the first prefabricated column reinforcing steel bars and the second prefabricated column reinforcing steel bars are embedded into the ultrahigh-performance concrete to form integral connection. For the node connection structure of current solid prefabricated post, this disclosure is convenient for observe when hoist and mount, but quick hoist and mount, grout quality easily ensure. Compared with the existing cavity prefabricated column node connecting structure, the cavity prefabricated column node connecting structure has the advantages that a specially-made steel bar connecting piece is not needed, and the cost is lower.
Description
Technical Field
The utility model relates to a building element construction field especially relates to a prefabricated post node connection structure.
Background
The fabricated building refers to a building fabricated at a construction site using prefabricated parts. In recent years, the development of the assembled building in China is rapid, and the assembled integral type superposed shear wall structure is produced at the same time. Superimposed shear walls and prefabricated columns are common fabricated components. The prefabricated column node used for connecting prefabricated columns is used as an important component connecting node of a fabricated structure and is always a difficulty solved by the fabricated frame structure.
The existing prefabricated column node connection is divided into a prefabricated solid column node and a prefabricated cavity column node. The prefabricated solid column node is characterized in that a groove is reserved at the bottom of the upper prefabricated solid column, a sleeve is embedded in the groove, and a steel bar in the upper prefabricated solid column is connected with the upper end of the sleeve. And the steel bars in the prefabricated solid column at the lower part extend upwards out of the end part of the prefabricated column and extend into the sleeve in the groove at the bottom of the prefabricated solid column at the upper part, and then grouting material is used for grouting into the sleeve to form connection. The prefabricated cavity column is exposed at the connecting position, namely, the reinforcing steel bars at the two ends of the prefabricated cavity column extend outwards, and the reinforcing steel bars of the upper prefabricated cavity column and the lower prefabricated cavity column are connected by adopting the connecting piece.
However, the connection mode of the prefabricated solid column node adopted at present cannot be observed when grouting materials are injected into the sleeve, and the construction quality is difficult to guarantee. The connecting piece of the adopted prefabricated hollow column needs to adopt a specially-made steel bar connecting piece, and the cost is higher.
SUMMERY OF THE UTILITY MODEL
To solve or at least alleviate at least one of the above technical problems, the present disclosure provides a prefabricated pillar node connecting structure.
According to an aspect of the present disclosure, a prefabricated pillar node connection structure includes:
the first end of the first prefabricated column is provided with a first prefabricated column steel bar extending outwards; the first precast column steel bars are arranged at intervals along the edge profile of the first precast column;
a second end of the second prefabricated column is provided with a second prefabricated column steel bar which extends outwards; the second prefabricated column steel bars are arranged at intervals along the edge profile of the second prefabricated column; the first end of the first prefabricated column is opposite to the second end of the second prefabricated column and is arranged at a certain distance; the first prefabricated column steel bars and the second prefabricated column steel bars form lap joints; and
the stirrup is bound at the lap joint part between the first prefabricated column reinforcing steel bar and the second prefabricated column reinforcing steel bar;
the first end of the first prefabricated column and the second end of the second prefabricated column are connected through a connecting rod; and the first prefabricated column reinforcing steel bars and the second prefabricated column reinforcing steel bars are embedded into the ultrahigh-performance concrete to form integral connection.
According to at least one embodiment of the present disclosure, a plurality of first precast column reinforcing steel bars and a plurality of second precast column reinforcing steel bars are provided, and the positions of the first precast column reinforcing steel bars and the positions of the second precast column reinforcing steel bars correspond to each other; the lap joint of the first prefabricated column reinforcing steel bar and the second prefabricated column reinforcing steel bar is tightly attached together.
According to at least one embodiment of the present disclosure, the stirrups are wound in the same plane and bound to the lap joints of each of the first prefabricated column reinforcing steel bars and the second prefabricated column reinforcing steel bars.
According to at least one embodiment of the present disclosure, the stirrups are provided with a plurality of layers in the axial direction, and each layer of stirrups is arranged in parallel at intervals.
According to at least one embodiment of the present disclosure, the non-overlapping portions of the first and/or second prefabricated column rebar are also tied with the stirrup.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the disclosure and together with the description serve to explain the principles of the disclosure.
Fig. 1 is a perspective view of an exemplary embodiment of a precast column node connection structure of the present disclosure.
Fig. 1 is an internal structure view of one side of the template removed.
Description of reference numerals:
1-first prefabricated column (upper prefabricated column); 2-second prefabricated column (lower prefabricated column); 3-first prefabricated column steel bars; 4-second prefabricated column steel bars; 5-stirrup; 6-template; 7-split bolt.
Detailed Description
The present disclosure will be described in further detail with reference to the drawings and embodiments. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limitations of the present disclosure. It should be further noted that, for the convenience of description, only the portions relevant to the present disclosure are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict. The present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
The existing prefabricated column node connection is divided into a prefabricated solid column node and a prefabricated cavity column node. The prefabricated solid column node is characterized in that a groove is reserved at the bottom of the upper prefabricated solid column, a sleeve is embedded in the groove, and a steel bar in the upper prefabricated solid column is connected with the upper end of the sleeve. And the steel bars in the prefabricated solid column at the lower part extend upwards out of the end part of the prefabricated column and extend into the sleeve in the groove at the bottom of the prefabricated solid column at the upper part, and then grouting material is used for grouting into the sleeve to form connection. The prefabricated cavity column is exposed at the connecting position, namely, the reinforcing steel bars at the two ends of the prefabricated cavity column extend outwards, and the reinforcing steel bars of the upper prefabricated cavity column and the lower prefabricated cavity column are connected by adopting the connecting piece.
However, the connection mode of the prefabricated solid column node adopted at present cannot be observed when grouting materials are injected into the sleeve, and the construction quality is difficult to guarantee. The connecting piece of the adopted prefabricated hollow column needs to adopt a specially-made steel bar connecting piece, and the cost is higher.
The present disclosure is therefore directed to a prefabricated column node connection structure, seeking to solve or at least alleviate at least one of the above technical problems, disclosing a prefabricated column node connection structure.
In the application document of the present disclosure, for convenience of describing the position relationship of each component in the prefabricated column node connection structure, the vertical height direction of the prefabricated column node connection structure is referred to as longitudinal direction or vertical direction by taking the position of the prefabricated column node connection structure after being constructed in place as a standard; the left and right width directions of the prefabricated column node connecting structure are called as transverse directions or horizontal directions; the thickness direction of the prefabricated column node connecting structure is vertical to a plane formed in the vertical direction and the horizontal direction. The prefabricated column node connecting structure is provided with an axis in the vertical direction.
According to an aspect of the present disclosure, refer to a perspective view of an exemplary embodiment of a precast column node connection structure of the present disclosure shown in fig. 1. Provided is a prefabricated column node connecting structure, which comprises a first prefabricated column 1, a second prefabricated column 2 and stirrups 5. First prefabricated post 1 and second prefabricated post 2 are prefabricated the shaping by concrete placement, and the reinforcing bar has been buried underground in the prefabricated post. Both ends of the first prefabricated column 1 and the second prefabricated column 2 may be provided as planar ends, wherein a first end of the first prefabricated column 1 is arranged opposite and at a distance from a second end of the second prefabricated column 2. For example, a first prefabricated column 1 is above a second prefabricated column 2, and the lower end of the first prefabricated column 1 is opposite to and spaced apart from the upper end of the second prefabricated column 2. A first prefabricated column steel bar 3 extending outwards is arranged at the first end of the first prefabricated column 1; and a second end of the second prefabricated column 2 is provided with a second prefabricated column steel bar 4 extending outwards. First prefabricated column rebar 3 and second prefabricated column rebar 4 protrude out of the planar end of the prefabricated column and function to form a rebar connection between the two prefabricated columns. The first prefabricated column reinforcing steel bar 3 and the second prefabricated column reinforcing steel bar 4 are overlapped. The steel bar lap joint refers to a connecting method that two steel bars have certain overlapping length and are bound by binding wires, and is suitable for connecting the steel bars with smaller diameters. First prefabricated post reinforcing bar 3 and second prefabricated post reinforcing bar 4 are all arranged along the marginal profile interval of first prefabricated post 1 and second prefabricated post 2. The stirrups 5 are wound on the lap joint part between the first prefabricated column reinforcing steel bars 3 and the second prefabricated column reinforcing steel bars 4, and the stirrups 5 are used for ensuring the stability of the lap joint part between the first prefabricated column reinforcing steel bars 3 and the second prefabricated column reinforcing steel bars 4 during construction; on the other hand, after the concrete is poured, the stirrups 5 can limit the development of cracks in the concrete and improve the structural strength. Pouring ultrahigh-performance concrete at least between the first end of the first prefabricated column 1 and the second end of the second prefabricated column 2; first prefabricated post reinforcing bar 3 and second prefabricated post reinforcing bar 4 and stirrup 5 all bury in the ultra high performance concrete, make first prefabricated post 1 and the prefabricated post 2 of second form the integral connection. The Ultra-High Performance Concrete, called UHPC (Ultra-High Performance Concrete) for short, also called Reactive Powder Concrete (RPC), has Ultra-High durability, Ultra-High mechanical properties, stronger fluidity, compressive strength and bond stress which meet the design requirements of the precast column, and certain tensile and shear resistance. Adopt the lapped form of first prefabricated post reinforcing bar 3 and the prefabricated post reinforcing bar 4 of second, avoided using the muffjoint mode among the prior art, convenient construction forms firm connection between stirrup 5 and prefabricated post reinforcing bar and the ultrahigh performance concrete of packing.
This prefabricated post nodal connection structure of prefabricated post, the link of first prefabricated post 1 and the prefabricated post 2 of second is relative and the interval sets up, and two prefabricated post links set up the prefabricated post reinforcing bar that outwards stretches out, and the form through overlap joint and 5 ligatures of stirrup between the prefabricated post reinforcing bar is connected two corresponding prefabricated post reinforcing bars, has avoided using the muffjoint construction inconvenient among the prior art, and the shortcoming that construction quality is difficult to the assurance. The prefabricated column steel bars, the stirrups 5 and the ultrahigh-performance concrete are firmly connected through the filled ultrahigh-performance concrete. The ultra-high performance concrete has ultra-high durability and mechanical property, has strong compressive strength and bond stress, has certain tensile and shearing resistance, and improves the strength of the joint connection structure. For the node connection structure of current solid prefabricated post, this disclosure is convenient for observe when hoist and mount, but quick hoist and mount, grout quality easily ensure. Compared with the existing cavity prefabricated column node connecting structure, the cavity prefabricated column node connecting structure has the advantages that a specially-made steel bar connecting piece is not needed, and the cost is lower.
In one embodiment of the present disclosure, the first prefabricated column steel bar 3 and the second prefabricated column steel bar 4 are both provided with a plurality of steel bars and correspond in position. The lap joint of the first prefabricated column reinforcing steel bar 3 and the second prefabricated column reinforcing steel bar 4 is tightly attached together.
In one embodiment of the present disclosure, the stirrup 5 may be wound in the same plane and tied together with the lap joint of each of the first and second prefabricated column reinforcing bars 3 and 4. The stability of the connection at the lap joint can be better improved through the binding of the stirrups 5. The stirrups 5 can be formed by winding a slightly thin steel bar on the prefabricated column steel bars extending out of the periphery in sequence according to a certain sequence to form a criss-cross winding form.
Optionally, the stirrups 5 may also be provided with multiple layers in the axial direction, and each layer of stirrups 5 is arranged in parallel at intervals. The provision of the multi-layer stirrup 5 increases the uniformity of reception.
In each of the above embodiments, the non-overlapping portions of the first and/or second prefabricated column reinforcing bars 3 and 4 are also bound with the stirrups 5. With reference to the orientation shown in fig. 1, the prefabricated column steel bars extending from the lower end of the first prefabricated column 1 above are connected to the prefabricated column steel bars extending from the upper end of the second prefabricated column 2 below in an overlapping and stirrup 5 manner. The space between the upper prefabricated column and the lower prefabricated column is filled with ultra-high performance concrete to form a node connecting structure between the two prefabricated columns.
In order to further illustrate the advantages of the prefabricated column node connection structure of the present disclosure to the construction, a construction method of the prefabricated column node connection structure is described below, which is used for connecting two prefabricated columns in the up-down direction, and the prefabricated column node connection structure adopts the node connection structure in any of the above embodiments. The construction method comprises the following steps:
and binding the stirrups 5 of the second prefabricated column steel bars 4 in place, wherein the binding in place refers to binding operation at the positions where the stirrups 5 need to be bound.
And hoisting the first prefabricated column 1 to the operation surface, and slowly dropping to ensure that the second prefabricated column steel bars 4 are all overlapped with the first prefabricated column steel bars 3. Prefabricated post reinforcing bar 4 of second is located the top of prefabricated post 2 of second below, upwards stretches out, aligns prefabricated post reinforcing bar 4 of second and corresponding prefabricated post reinforcing bar 3 under workman's assistance through tower crane or mobile crane.
And (5) binding stirrups at the lap joint of the second prefabricated column reinforcing steel bars 4 and the first prefabricated column reinforcing steel bars 3.
A formwork 6 is installed around the space between the first end of the first prefabricated column 1 and the second end of the second prefabricated column 2 to form a closed casting space. Optionally, the upper portion of the form 6 abuts the sidewall of the first prefabricated column 1 and the lower portion of the form 6 abuts the sidewall of the second prefabricated column 2. The template 6 can be fixed by adopting split bolts 7, the split bolts 7 are arranged on two opposite sides of the template 6 in a penetrating way, and the stability of the prefabricated columns 1 at the upper part and the lower part is ensured through the split bolts 7. The construction of the split bolt 7 adopts the existing construction mode, and auxiliary components such as a sleeve, a plug and the like can be adopted.
And pouring the ultra-high performance concrete into the pouring space, so that the ultra-high performance concrete is at least filled into the pouring space. In the process of filling the ultra-high performance concrete into the pouring space, the problem of construction quality of air gaps caused by the fact that the sleeve is not easy to flow into the sleeve due to the sleeve in the prior art is solved. And filling the pouring space with ultrahigh-performance concrete, and embedding the first prefabricated column reinforcing steel bars 3, the second prefabricated column reinforcing steel bars 4 and the stirrups 5 into the poured concrete.
In one embodiment of the present disclosure, the step of pouring the ultra-high performance concrete into the pouring space has different construction methods according to different precast column forms, including:
and under the condition that the first prefabricated column 1 and the second prefabricated column 2 are solid prefabricated columns, a pouring opening and an observation opening are reserved on the template 6, and ultrahigh-performance concrete is poured through the pouring opening. Because the solid prefabricated column does not have other channels capable of being filled, the template 6 is required to be provided with a filling port and an observation port.
In the case where the first and second prefabricated columns 1 and 2 are cavity prefabricated columns, ultra high performance concrete is poured from the top opening of the first prefabricated column 1 located at the upper portion. The cavity of the cavity precast column can be poured with ultra-high performance concrete, so that the overall mechanical performance of the precast column is improved.
The following is a preferred exemplary embodiment of the construction method:
1. and binding the stirrups 5 of the lower prefabricated column 2 in place.
2. And hoisting the upper prefabricated column 1 to the operation surface by using a tower crane or a mobile crane, and slowly dropping to ensure that all the steel bars extending out of the lower prefabricated column 2 are lapped with the steel bars extending out of the upper prefabricated column 1.
3. And binding a stirrup 5 at the overlapping part of the steel bar.
4. And a template 6 and a split bolt 7 are arranged between the lower end of the upper prefabricated column 1 and the upper end of the lower prefabricated column 2, and the stability of the upper prefabricated column 1 and the lower prefabricated column 1 is ensured through the split bolt 7.
5. For the solid prefabricated column, a filling port and an observation port are reserved on the template 6, and slurry is filled.
6. For the cavity prefabricated column, holes are not reserved on the template 6, and slurry is poured from the top opening of the upper prefabricated column 1.
The grouting slurry is made of ultra-high performance concrete (UHPC), has stronger fluidity, higher compressive strength than that of a prefabricated column, and a bond stress meeting the design requirement and certain tensile and shear resistance.
According to the above embodiments, the prefabricated column node connection structure has the advantages that the connecting ends of the first prefabricated column 1 and the second prefabricated column 2 are arranged oppositely and at intervals, the two prefabricated column connecting ends are provided with the prefabricated column reinforcing steel bars extending outwards, the two corresponding prefabricated column reinforcing steel bars are connected in a lap joint mode and a stirrup 5 binding mode between the prefabricated column reinforcing steel bars, the defects that sleeve connection construction is inconvenient to use and construction quality is not easy to guarantee in the prior art are avoided. The prefabricated column steel bars, the stirrups 5 and the ultrahigh-performance concrete are firmly connected through the filled ultrahigh-performance concrete. The ultra-high performance concrete has ultra-high durability and mechanical property, has strong compressive strength and bond stress, has certain tensile and shearing resistance, and improves the strength of the joint connection structure. For the node connection structure of current solid prefabricated post, this disclosure is convenient for observe when hoist and mount, but quick hoist and mount, grout quality easily ensure. Compared with the existing cavity prefabricated column node connecting structure, the cavity prefabricated column node connecting structure has the advantages that a specially-made steel bar connecting piece is not needed, and the cost is lower.
In the description herein, reference to the description of the terms "one embodiment/mode," "some embodiments/modes," "example," "specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment/mode or example is included in at least one embodiment/mode or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to be the same embodiment/mode or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, the various embodiments/aspects or examples and features of the various embodiments/aspects or examples described in this specification can be combined and combined by one skilled in the art without conflicting therewith.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
It will be understood by those skilled in the art that the foregoing embodiments are merely for clarity of illustration of the disclosure and are not intended to limit the scope of the disclosure. Other variations or modifications may occur to those skilled in the art, based on the foregoing disclosure, and are still within the scope of the present disclosure.
Claims (5)
1. A precast column node connection structure characterized by comprising:
the first end of the first prefabricated column is provided with a first prefabricated column steel bar extending outwards; the first precast column steel bars are arranged at intervals along the edge profile of the first precast column;
a second end of the second prefabricated column is provided with a second prefabricated column steel bar which extends outwards; the second prefabricated column steel bars are arranged at intervals along the edge profile of the second prefabricated column; the first end of the first prefabricated column is opposite to the second end of the second prefabricated column and is arranged at a certain distance; the first prefabricated column steel bars and the second prefabricated column steel bars form lap joints; and
the stirrup is bound at the lap joint part between the first prefabricated column reinforcing steel bar and the second prefabricated column reinforcing steel bar;
the first end of the first prefabricated column and the second end of the second prefabricated column are connected through a connecting rod; and the first prefabricated column reinforcing steel bars and the second prefabricated column reinforcing steel bars are embedded into the ultrahigh-performance concrete to form integral connection.
2. The prefabricated column node connecting structure according to claim 1, wherein a plurality of the first prefabricated column reinforcing steel bars and a plurality of the second prefabricated column reinforcing steel bars are arranged and correspond in position; the lap joint of the first prefabricated column reinforcing steel bar and the second prefabricated column reinforcing steel bar is tightly attached together.
3. The prefabricated pillar nodal connection structure of claim 2, wherein said stirrup is wound in the same plane and tied to each of the overlapping portions of said first prefabricated pillar reinforcement and said second prefabricated pillar reinforcement.
4. The prefabricated column node connection structure of claim 3, wherein the stirrups are provided in a plurality of layers in the axial direction, and the stirrups of each layer are arranged in parallel at intervals.
5. A prefabricated column nodal connection structure according to any one of claims 1 to 4, wherein non-overlapping portions of said first and/or second prefabricated column reinforcing bars are also tied with said stirrups.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922341060.0U CN211523536U (en) | 2019-12-23 | 2019-12-23 | Prefabricated post nodal connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922341060.0U CN211523536U (en) | 2019-12-23 | 2019-12-23 | Prefabricated post nodal connection structure |
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| CN211523536U true CN211523536U (en) | 2020-09-18 |
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| CN201922341060.0U Active CN211523536U (en) | 2019-12-23 | 2019-12-23 | Prefabricated post nodal connection structure |
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Address after: 102206 1st floor, building 6, 8 Beiqing Road, Huilongguan town, Changping District, Beijing Patentee after: Sany Construction Technology Co.,Ltd. Address before: Room 301, building 6, No. 8, Beiqing Road, Huilongguan town, Changping District, Beijing Patentee before: SANY CONSTRUCTION TECHNOLOGY Co.,Ltd. |