CN212866625U - Pier head reinforcing bar combination grout sleeve and assembled component connection structure - Google Patents
Pier head reinforcing bar combination grout sleeve and assembled component connection structure Download PDFInfo
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- CN212866625U CN212866625U CN202021061925.4U CN202021061925U CN212866625U CN 212866625 U CN212866625 U CN 212866625U CN 202021061925 U CN202021061925 U CN 202021061925U CN 212866625 U CN212866625 U CN 212866625U
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Abstract
The utility model relates to a pier head reinforcing bar combination grout sleeve and assembled component connection structure, including the steel pipe, the one end of steel pipe is prefabricated end, and the other end is the assembly end, the prefabricated end fixed connection of steel pipe has coaxial first connecting sleeve, first connecting sleeve sets up in the inner chamber of steel pipe, coaxial being fixed with the longitudinal bar in the first connecting sleeve, the longitudinal bar stretches out towards the direction of keeping away from the steel pipe; the assembly end coaxial fixation has the second connecting sleeve, wear to be equipped with coaxial connecting reinforcement in the second connecting sleeve, connecting reinforcement can slide along the axis direction of steel pipe, connecting reinforcement stretches into the one end fixedly connected with pier nose of steel pipe inner chamber.
Description
Technical Field
The utility model belongs to the technical field of civil engineering, concretely relates to pier nose reinforcing bar combination grout sleeve and assembled component connection structure.
Background
The prefabricated concrete structure has the advantages of high industrialization degree, material saving, small pollution, convenient construction, small field wet operation amount and worker quantity, convenient control of prefabricated part quality, short construction period, quick investment recovery and the like, and is the direction of the novel building industrialization development. For the assembly of the integral concrete structure, the key for ensuring the shock resistance of the integral concrete structure is the reliable connection of the steel bars of the prefabricated parts.
At present, the connecting mode of the steel bars of the prefabricated parts mainly comprises steel bar slurry anchor lap joint and steel bar sleeve grouting connection. The latter is not limited by the structure height, the anti-seismic grade and the like, has wider application range, and becomes a main connection mode for connecting the prefabricated member steel bars. The connection mechanism is that the transmission of force is realized through mutual adhesion among the steel bar, the filling grouting material and the steel sleeve.
The inventor knows that, in the existing steel bar sleeve grouting connection, due to the requirement of the steel bar anchoring length, the length of the sleeve is large, on one hand, excessive consumption of steel and grouting materials is caused, on the other hand, an overlong sleeve can form an overlong connecting area at the bottom of a frame column, and due to the fact that the rigidity of the connecting area is overlarge, rigidity mutation is generated, obvious stress concentration is formed at the upper part of the connecting area, and the steel bar is easy to be pressed and bent at the position under the action of an earthquake, so that the structure is seriously damaged.
The manufacturing method of the grouting sleeve and the consumption of steel and grouting material directly influence the price of the sleeve. At present, the price of the grouting connection of the steel bar sleeve in China is too high, the steel bar connection cost of the fabricated concrete structure is far higher than that of a cast-in-place structure, and the grouting connection of the steel bar sleeve becomes one of main factors restricting the popularization and the application of the fabricated structure. On the basis of ensuring the connection reliability of the steel bars, the grouting sleeve is manufactured by a simpler, more material-saving and more environment-friendly method, the connection cost of the steel bars is reduced, and the grouting sleeve has great significance for the development of the industrialization of buildings in China.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a pier nose reinforcing bar combination grout sleeve and assembled component connection structure reduces sleeve length, reduces steel and grout material's too much consumption. Meanwhile, the length of the column bottom steel bar connection area can be shortened, stress concentration caused by rigidity mutation of the connection area is reduced, and structural damage under the action of an earthquake is reduced.
In order to achieve the above object, a first aspect of the present invention provides a pier head steel bar combination grouting sleeve, including a steel pipe, one end of the steel pipe is a prefabricated end, and the other end of the steel pipe is an assembly end, the prefabricated end of the steel pipe is fixedly connected with a coaxial first connecting sleeve, the first connecting sleeve is disposed in an inner cavity of the steel pipe, a longitudinal rib is coaxially fixed in the first connecting sleeve, and the longitudinal rib extends in a direction away from the steel pipe;
the assembly end coaxial fixation has the second connecting sleeve, wear to be equipped with coaxial connecting reinforcement in the second connecting sleeve, connecting reinforcement can slide along the axis direction of steel pipe, connecting reinforcement stretches into the one end fixedly connected with pier nose of steel pipe inner chamber.
As a further limitation of the first aspect of the present invention, the cross-sectional diameter of the inner cavity of the second connecting sleeve is larger than the cross-sectional diameter of the connecting reinforcement, and the outer diameter of the cross-section of the pier head is smaller than the inner diameter of the second connecting sleeve.
The second aspect of the utility model provides an assembly type component connection structure, utilized pier nose reinforcing bar combination grout sleeve, including two prefabricated component, the extension axis coincidence of two prefabricated component, the mutual contact is in order to realize supporting between two prefabricated component's the tip, passes through between two prefabricated component pier nose reinforcing bar combination grout sleeve accomplish fixed connection.
The beneficial effects of one or more technical schemes are as follows:
the grout sleeve is the combination sleeve, and preparation and equipment are simple, combine reinforcing bar pier nose structure can reduce reinforcing bar anchor length by a wide margin, and then reduce sleeve length, reduce steel and grout material quantity to can reduce the influence of grout sleeve regional rigidity sudden change to component anti-seismic performance.
The adoption sets up first connecting sleeve and second connecting sleeve at the both ends of steel pipe, and second connecting sleeve, joint reinforcement can separate with the steel pipe when not using, are convenient for set up parts such as first connecting sleeve, joint reinforcement and steel pipe, indulge the muscle in the prefabricated component of difference.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
Fig. 1 is a cross-sectional view of the overall structure in embodiment 1 of the present invention;
fig. 2 is a schematic structural view of a first connecting sleeve in embodiment 1 of the present invention;
fig. 3 is a schematic structural view of a second connection sleeve in embodiment 1 of the present invention;
fig. 4 is a schematic structural view of a pier head in embodiment 1 of the present invention;
fig. 5 is a schematic view of a structure installation process in embodiment 2 of the present invention;
fig. 6 is a schematic structural view of the whole mechanism after the installation is completed in embodiment 2 of the present invention.
In the figure: 1. a steel pipe; 2. heading; 3. a first connecting sleeve; 4. a second connecting sleeve; 5. a first internal thread; 6. a first external thread; 7. a second internal thread; 8. a second external thread; 9. grouting holes; 10. a slurry outlet; 11. longitudinal ribs; 12. connecting reinforcing steel bars; 13. grouting material; 14. and (7) setting a slurry layer.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
For convenience of description, the words "up, down, left, right" in the present invention, if appearing, are intended to correspond only to the upper, lower, left, right directions of the drawings themselves, not to limit the structure, but merely to facilitate the description of the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the invention.
Example 1
As shown in fig. 1-4, the embodiment provides a pier-head steel bar combined grouting sleeve, which includes a steel pipe 1, one end of the steel pipe 1 is a prefabricated end, and the other end of the steel pipe 1 is an assembly end, the prefabricated end of the steel pipe 1 is fixedly connected with a coaxial first connecting sleeve 3, the first connecting sleeve 3 is disposed in an inner cavity of the steel pipe 1, a longitudinal rib 11 is coaxially fixed in the first connecting sleeve 3, and the longitudinal rib 11 extends out in a direction away from the steel pipe 1;
the assembly end coaxial fixation has second connecting sleeve 4, wear to be equipped with coaxial connecting reinforcement 12 in the second connecting sleeve 4, connecting reinforcement 12 can slide along the axis direction of steel pipe 1, connecting reinforcement 12 stretches into the one end fixedly connected with pier nose 2 of 1 inner chamber of steel pipe.
An inner thread is arranged in an inner cavity of the steel pipe 1, outer threads are respectively arranged on the outer portions of the first connecting sleeve 3 and the second connecting sleeve 4, and the first connecting sleeve 3 and the second connecting sleeve 4 are respectively connected with the steel pipe 1 through threads.
The internal surface of first connecting sleeve 3 is provided with the internal thread, the outer disc that indulges muscle 11 is provided with the external screw thread, first connecting sleeve 3 passes through threaded connection with indulging muscle 11. The cross section of the inner cavity of the second connecting sleeve 4 is larger than the diameter of the cross section of the connecting steel bar 12, and the outer diameter of the cross section of the pier head 2 is smaller than the inner diameter of the cross section of the inner cavity of the second connecting sleeve 4. One end of steel pipe 1 is provided with grout hole 9, and the other end is provided with grout outlet 10, grout hole 9 can be with external grout pipe intercommunication, grout outlet 10 can be with external back-flow pipe intercommunication. Pier nose 2 is annular structure, and pier nose 2 fixed cover is established in the one end that connecting reinforcement 12 stretched into steel pipe 1.
Specifically, the inside of steel pipe sets up first internal thread 5, and first connecting sleeve's outer wall sets up first external screw thread 6, second connecting sleeve's outside sets up second external screw thread 7, first connecting sleeve's inside sets up second internal thread 8.
Example 2
As shown in fig. 5 to 6, this embodiment provides an assembly type member connection structure, which utilizes the pier head 2 steel bar combination grouting sleeve, and includes two prefabricated members, extension axes of the two prefabricated members are overlapped, ends of the two prefabricated members contact each other to realize support, and the two prefabricated members are fixedly connected through the pier head 2 steel bar combination grouting sleeve.
The prefabricated parts comprise a first prefabricated part and a second prefabricated part, connecting steel bars 12 are prefabricated in the first prefabricated part, one end, provided with the pier nose 2, of each connecting steel bar 12 extends out of the first prefabricated part, and a second connecting sleeve 4 is sleeved on one end, extending out of the first prefabricated part, of each connecting steel bar 12.
A steel pipe 1 and longitudinal ribs 11 are prefabricated in the second prefabricated part, and the steel pipe 1 is arranged at the end part of the second prefabricated part; the connecting steel bar 12 in the first prefabricated part can extend into the steel pipe 1 in the second prefabricated part, and the second connecting sleeve 4 is matched with the assembling end of the steel pipe 1 through threads to realize fixation.
And grouting materials 13 are respectively filled in the inner cavity of the steel pipe 1 and in gaps between the end parts of the first prefabricated part and the second prefabricated part. The second connecting sleeve 4 extends out of the assembling section of the steel pipe 1, so that a set gap is formed between the first prefabricated part and the second prefabricated part. The grout in the set gap forms a grout layer 14.
The outer contour of the second connecting sleeve 4 is circular in cross section.
The method for grouting and connecting the pier head steel bar combined sleeve comprises the following steps: when the precast concrete component is precast in a factory, the first connecting sleeve 3 is in threaded connection with the steel pipe 1, then the longitudinal rib 11 is in threaded connection with the first connecting sleeve 3, the port of the other end of the steel pipe 1 is fixed with a template of the precast component, the PVC pipe is fixedly connected with the grouting hole 6 and the grout outlet hole 7, the PVC pipe is led to the outer side of the template, and the component concrete is poured and maintained to the specified strength. When the prefabricated parts are assembled on a construction site, the second connecting sleeve 4 is firstly sleeved on the overhanging connecting steel bar 12 at the top of the first prefabricated part, the second prefabricated part is lifted, the sleeve is aligned to the first prefabricated part and is slowly inserted into the first prefabricated part, the second connecting sleeve 4 sleeved on the connecting steel bar 12 in advance is screwed into the steel pipe 1 by using a wrench for threaded connection, the lower part of the connecting sleeve 4 extends out of the steel pipe by about 20mm to be used as a base grouting layer cushion block, the prefabricated parts are reliably supported immediately after being in place, after the base grouting layer plugging material reaches a certain strength, the mixed high-strength non-shrinkage cement-based grouting material 13 is pressure-grouted from the grouting hole 9 at the lower part of the sleeve, the grouting material is discharged from the grouting hole 10, then the grouting hole is plugged, and the grouting material is cured to the designed strength to form the reinforcing steel bar sleeve grouting butt joint.
Although the present invention has been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without inventive work are still within the scope of the present invention.
Claims (10)
1. The pier head steel bar combined grouting sleeve is characterized by comprising a steel pipe, wherein one end of the steel pipe is a prefabricated end, the other end of the steel pipe is an assembling end, the prefabricated end of the steel pipe is fixedly connected with a coaxial first connecting sleeve, the first connecting sleeve is arranged in an inner cavity of the steel pipe, a longitudinal rib is coaxially fixed in the first connecting sleeve, and the longitudinal rib extends out towards the direction far away from the steel pipe;
the assembly end coaxial fixation has the second connecting sleeve, wear to be equipped with coaxial connecting reinforcement in the second connecting sleeve, connecting reinforcement can slide along the axis direction of steel pipe, connecting reinforcement stretches into the one end fixedly connected with pier nose of steel pipe inner chamber.
2. The pier nose steel bar combination grouting sleeve according to claim 1, wherein an inner cavity of the steel pipe is provided with an inner thread, the outer parts of the first connecting sleeve and the second connecting sleeve are respectively provided with an outer thread, and the first connecting sleeve and the second connecting sleeve are respectively connected with the steel pipe through threads.
3. The pier nose steel bar combination grouting sleeve according to claim 1, wherein an internal thread is arranged on the inner surface of the first connecting sleeve, an external thread is arranged on the outer circumferential surface of the longitudinal bar, and the first connecting sleeve is in threaded connection with the longitudinal bar.
4. The pier nose and steel bar combined grouting sleeve according to claim 1, wherein the diameter of the cross section of the inner cavity of the second connecting sleeve is larger than that of the cross section of the connecting steel bars, and the outer diameter of the cross section of the pier nose is smaller than the inner diameter of the cross section of the inner cavity of the second connecting sleeve.
5. The pier nose steel bar combination grouting sleeve of claim 1, wherein one end of the steel pipe is provided with a grouting hole, and the other end of the steel pipe is provided with a grout outlet, the grouting hole can be communicated with an external grouting pipe, and the grout outlet can be communicated with an external grout return pipe.
6. The pier head and steel bar combined grouting sleeve according to claim 1, wherein the pier head is of an annular structure, and the pier head is fixedly sleeved at one end of the connecting steel bar extending into the steel pipe.
7. An assembled member connecting structure, which utilizes the pier nose steel bar combination grouting sleeve of any one of claims 1 to 6, and is characterized by comprising two prefabricated members, wherein the extension axes of the two prefabricated members are overlapped, the end parts of the two prefabricated members are contacted with each other to realize support, and the two prefabricated members are fixedly connected through the pier nose steel bar combination grouting sleeve.
8. The prefabricated component connecting structure according to claim 7, wherein the prefabricated components comprise a first prefabricated component and a second prefabricated component, the first prefabricated component is prefabricated with connecting steel bars, one ends of the connecting steel bars, which are provided with pier heads, extend out of the first prefabricated component, and one end of the connecting steel bars, which extends out of the first prefabricated component, is sleeved with a second connecting sleeve;
steel pipes and longitudinal ribs are pre-embedded in the second prefabricated part, and the steel pipes are arranged at the end part of the second prefabricated part;
the connecting steel bars in the first prefabricated part can extend into the steel pipes in the second prefabricated part, and the second connecting sleeve is matched with the assembling end of the steel pipe through threads to realize fixation;
and grouting materials are respectively filled in the inner cavity of the steel pipe and in gaps between the end parts of the first prefabricated part and the second prefabricated part.
9. The fabricated component connecting structure according to claim 8, wherein the second connecting sleeve extends out of the fabricated section of the steel pipe so that a set gap is formed between the first prefabricated component and the second prefabricated component.
10. The fabricated component connecting structure according to claim 9, wherein an outer profile cross-section of the second connecting sleeve is circular.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021061925.4U CN212866625U (en) | 2020-06-09 | 2020-06-09 | Pier head reinforcing bar combination grout sleeve and assembled component connection structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021061925.4U CN212866625U (en) | 2020-06-09 | 2020-06-09 | Pier head reinforcing bar combination grout sleeve and assembled component connection structure |
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| CN212866625U true CN212866625U (en) | 2021-04-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113668361A (en) * | 2021-06-04 | 2021-11-19 | 武汉理工大学 | Fabricated concrete double-layer gate-type pier structure and construction method |
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2020
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113668361A (en) * | 2021-06-04 | 2021-11-19 | 武汉理工大学 | Fabricated concrete double-layer gate-type pier structure and construction method |
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