CN211547357U - Prefabricated structure grout sleeve joint construction of assembling - Google Patents
Prefabricated structure grout sleeve joint construction of assembling Download PDFInfo
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- CN211547357U CN211547357U CN201921370844.XU CN201921370844U CN211547357U CN 211547357 U CN211547357 U CN 211547357U CN 201921370844 U CN201921370844 U CN 201921370844U CN 211547357 U CN211547357 U CN 211547357U
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- grouting sleeve
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- 239000011440 grout Substances 0.000 title claims abstract description 37
- 238000010276 construction Methods 0.000 title claims abstract description 13
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 72
- 239000010959 steel Substances 0.000 claims abstract description 72
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims abstract description 19
- 239000011178 precast concrete Substances 0.000 claims abstract description 5
- 238000007599 discharging Methods 0.000 claims description 9
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- 230000003014 reinforcing effect Effects 0.000 abstract description 17
- 239000004570 mortar (masonry) Substances 0.000 abstract description 15
- 238000000275 quality assurance Methods 0.000 abstract description 2
- 238000011900 installation process Methods 0.000 abstract 1
- 239000004567 concrete Substances 0.000 description 7
- 238000009434 installation Methods 0.000 description 4
- 238000009417 prefabrication Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a prefabricated structure grout muffjoint construction of assembling, reinforcing bar in embedding precast concrete component, grout sleeve is equipped with steel chisel strip along the circumference at grout sleeve inner wall, is equipped with the grout hole in grout sleeve one end, and the other end is equipped with row's grout hole, and sleeve central point puts and is equipped with limit baffle, and both ends port has the rubber ring stopper, and steel chisel strip welds at sleeve inner wall, and the reinforcing bar surface is unsmooth, and steel chisel strip connects the shape rather than cooperateing and forms mechanical overlap joint. In the installation process of the prefabricated pier, after the prefabricated part is aligned and positioned, the reinforcing steel bar at the other end is inserted into the grouting sleeve, and the steel chisel strip connector is mechanically connected with the reinforcing steel bar, so that the reinforcing steel bar is not easy to pull out, and at the moment, common mortar is poured into the grouting hole. The utility model discloses there is mechanical snap-in force reinforcing bar and grout sleeve, is difficult for being extracted, can provide certain tensile and compressive capacity, so the sleeve pour into ordinary mortar can, construction accuracy and quality assurance are better.
Description
Technical Field
The utility model relates to a connected mode of in-process sleeve grout is assembled to prefabricated pier belongs to the prefabricated assembled engineering construction field of bridge.
Background
With the continuous development of the current domestic prefabricated bridge, more and more domestic scholars research the prefabricated bridge, however, the most core problem of the prefabricated bridge lies in the connection processing mode of the prefabricated sections, the sleeve grouting connection is called as a mode which is most widely applied in the prefabricated pier steel bar connection because the sleeve grouting connection has higher tensile strength, reliable connection and convenient construction, and the previous sleeve grouting connection mainly comprises the steps that steel bars are inserted into grouting sleeves from two ends, then expansive high-strength mortar is poured into the grouting sleeves, and the steel bars and the sleeves are firmly combined into a whole. However, the expansibility of the injected expansive high-strength mortar is difficult to control, the quality is difficult to ensure, and the expansive mortar is easy to pull out and damage. Therefore, the development of a novel steel bar connecting mode is particularly necessary.
In view of the problem that the connection of above reinforcing bar exists, this designer has developed a prefabricated structure grout muffjoint construction of assembling to can solve current construction problem in the hope.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the inflation mortar expansibility difficult to control among the grout sleeve in the prefabricated pier, the difficult assurance of quality and the not high defect of sleeve grout connection tensile strength in the past, and then provide a structure grout muffjoint construction is assembled in prefabrication, the utility model discloses a mechanical connection, accuracy and quality assurance are better, the effectual telescopic tensile strength that has improved grout to the construction is reliable, convenient.
The utility model adopts the technical proposal that: a prefabricated assembly structure grouting sleeve connecting structure comprises a steel bar, a grouting sleeve, steel chisel bars, grouting holes, grout discharge holes, a limiting baffle and a rubber ring plug;
a precast concrete component is arranged in the grouting sleeve, and reinforcing steel bars are embedded in the precast concrete component;
the inner wall of the grouting sleeve is circumferentially provided with steel chisel strips, the upper end of the grouting sleeve is provided with grouting holes, and the lower end of the grouting sleeve is provided with grout discharging holes;
the steel chisel strip comprises a steel backing plate, a joint, a spring and a steel shaft pin; the bottom of the joint and the steel backing plate are both provided with a preformed hole, the pin shaft penetrates through the preformed holes of the joint and the steel backing plate, the other side of the joint is connected with the steel backing plate through a spring, and the joint and the steel backing plate form an angle of 50-70 degrees and are both inclined towards the middle of the sleeve; thus, the joint can deform, and the steel bar can be conveniently inserted; the joints are distributed with more ends and less middle by taking the center point of the grouting sleeve as a boundary, and the shapes of the joints are matched with the concave grooves of the reinforcing steel bars;
a limiting baffle plate for controlling the insertion depth of the reinforcing steel bars is arranged at the center of the grouting sleeve; the steel chisel strips are symmetrically distributed in the grouting sleeve by taking the limiting baffle as a boundary; and rubber ring plugs are arranged at two ends of the grouting sleeve.
Preferably, the distance between the grouting hole and the grout discharging hole and the near end port is 15-30 mm.
Preferably, the length of the steel chisel strip is less than half of the length of the grouting sleeve.
Preferably, the rubber ring plug is in a frustum shape and is 18-25mm high.
The construction method of the novel prefabricated pier steel bar sleeve grouting connection mode comprises two parts, namely factory prefabrication and field installation;
prefabrication in a factory: firstly, welding the steel chisel strip on the inner wall of the grouting sleeve, and inserting the steel bar from the embedded end of the grouting sleeve after the welding is finished; the two ends of the prefabricated pier component are plugged by conical rubber rings, so that concrete is prevented from flowing into the grouting sleeve when the concrete is poured, and the grouting sleeve is embedded in the end part of the prefabricated pier component;
field installation: the connection between the pier and the capping beam or between the pier and the bearing platform is shown; after the components are aligned and positioned, the reinforcing steel bar at the other end is inserted into the grouting sleeve, and the joint is matched with the surface of the reinforcing steel bar due to the concave-convex surface of the reinforcing steel bar, so that the joint and the reinforcing steel bar can form mechanical connection, the reinforcing steel bar is ensured not to be pulled out easily, and the bearing capacity of the grouting sleeve is improved; and after the installation is finished, pouring common mortar from the grouting hole, and plugging the grouting hole and the grout discharging hole after the grouting is finished.
Has the advantages that: the utility model discloses grout muffjoint mode passes through the joint of steel chisel strip in the sleeve and the overlap joint of reinforcing bar concave groove, the reinforcing bar is extracted difficultly, inject ordinary mortar like this can, grouting material expansibility is difficult to control in having solved grout muffjoint mode in the past, the problem that the consolidation quality is difficult to guarantee and the reinforcing bar is easily extracted, and the steel chisel strip has acted as the shear force key, the reinforcing bar is extracted and need to overcome the mechanical interlock of reinforcing bar and steel chisel strip and the frictional force of mortar to it, the effectual tensile strength that improves grout muffjoint mode, and construction convenience is reliable.
Drawings
FIG. 1 is a schematic sectional view of a grouting sleeve according to the present invention;
FIG. 2 is a schematic view of the connection structure of the reinforcing steel bars and the steel chisel bars of the present invention;
fig. 3 is a detailed view of the steel chisel strip of the present invention.
In the figure: 1-reinforcing steel bars; 2-grouting a sleeve; 3-chiseling steel strips; 4-grouting holes; 5-slurry discharge holes; 6-limiting baffle plates; 7-rubber ring plug; 301-steel backing plate; 302-a linker; 303-a spring; 304 steel pins.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings:
as shown in fig. 1, 2 and 3, the grouting sleeve connection structure with the prefabricated assembly structure comprises a steel bar 1 and a grouting sleeve 2 which are embedded into a prefabricated concrete member, wherein a steel chisel strip 3 is arranged on the inner wall of the grouting sleeve along the circumference, a grouting hole 4 is formed in one end of the grouting sleeve 1, a grout discharging hole 5 is formed in the other end of the grouting sleeve, a limiting baffle 6 is arranged at the center of the grouting sleeve, and rubber ring plugs 7 are arranged at ports at two ends of the grouting sleeve.
The steel chisel strip comprises a steel backing plate 301, a connector 302, a spring 303 and a steel shaft pin 304, wherein the bottom of the connector 302 and the steel backing plate are provided with small reserved holes, the steel shaft pin 304 penetrates through the reserved holes of the connector and the steel backing plate, the other surface of the connector 302 is connected with the steel backing plate 301 through the spring 303, and the connector 302 and the steel backing plate 301 form an angle of 50-70 degrees and incline towards the middle of the grouting sleeve 2. This allows the coupling 302 to be deformed to facilitate insertion of the reinforcing bar 1. And the joints 302 are distributed with more ends and less middle, with the center of the grouting sleeve 2 as a boundary. Finally, the shape of the joint 302 is matched with the concave groove of the steel bar 1. The steel chisel bar may be machined.
The distance between the grouting hole 4 and the grout discharging hole 5 and the near end port is 15-30 mm.
The limiting baffle 6 is used for controlling the insertion depth of the reinforcing steel bars.
The steel chisel strip 3 uses a limit baffle 6 as a boundary, and is symmetrically distributed in the grouting sleeve 2, and the length of the steel chisel strip 3 is less than half of the length of the grouting sleeve 2.
The rubber ring plug 7 is in a frustum shape and is 18-25mm high.
Firstly, steel chisel strip 3 welds on the grout sleeve inner wall, treat that the welding is accomplished the back, insert reinforcing bar 1 from the pre-buried end of grout sleeve 2 earlier, in this process, because one side of joint 302 is equipped with spring 303, joint 302 can be to the deformation, reinforcing bar 1 is convenient for insert, and reinforcing bar 1 inserts the back difficult extraction, and steel chisel strip 3 has also acted as the effect of shear force key, reinforcing bar 1 extracts and need overcome reinforcing bar 1 and joint 302's mechanical interlock and mortar to its frictional force, can show the tensile ability that improves this grout muffjoint system, insert the completion back, plug with frustum shape rubber ring stopper 7 at both ends, concrete flow in grout sleeve 2 when preventing to pour concrete, grout sleeve 2 is pre-buried in prefabricated pier tip. Then the reinforcing steel bar 1 at the other end is aligned and positioned and then inserted into the grouting sleeve 2, and the joint 302 is aligned and lapped with the concave groove of the reinforcing steel bar 1. And after the installation is finished, pouring common mortar from the grouting hole 4, and plugging the grouting hole 4 and the grout discharging hole 5 after the grouting is finished.
The concrete operation method of the grouting sleeve connecting structure of the prefabricated assembling structure comprises the following steps:
firstly, processing a steel pipe into the shape of a grouting sleeve 2 in a factory, then drilling holes at 15-30mm positions of two end ports to form grouting holes 4 and grout discharging holes 5, then processing on a mould to form a limiting baffle 6, and then welding the processed steel chisel strips 3 (comprising a steel backing plate 301, a joint 302, a spring 303 and a steel shaft pin 304) to the inner wall of the grouting sleeve 2 one by one. Then plug 7 both ends with rubber ring, insert the pre-buried end of grout sleeve 2 with the reinforcing bar 1 that will tie in the prefabrication factory after that, grout hole 4 and row's thick liquid hole 5 connect the PVC pipe, make things convenient for the thick liquids to pour into and discharge, then pour the concrete, after its maintenance is accomplished, transport to the scene and install.
When the steel bar grouting sleeve is installed on site, sundries in the grouting sleeve 2 need to be cleaned firstly, then the components are aligned and positioned, after positioning is completed, the steel bar 1 at the other end is inserted into the grouting sleeve 2, and after the steel bar 1 is inserted into the designed depth, the groove of the steel bar 1 is mechanically connected with the steel chisel strip 3. The reinforcing bar 1 is not easily pulled out. And then, pouring the mixed common mortar into the cavity of the grouting sleeve 2 from the grouting hole 4 through a small injection pump, and plugging the grouting hole 4 and the grout discharging hole 5 after grouting is finished. In the past, expansion mortar is poured, but the expansibility of the expansion mortar is difficult to control, and the quality is difficult to guarantee, so that the steel bar and the steel chisel bar joint are mechanically connected, the accuracy is high, the quality can be guaranteed, and the common mortar can be poured.
The embodiments of the present invention are described in detail above with reference to the drawings, but the present invention is not limited to the described embodiments. To those skilled in the art, many changes, modifications, substitutions and alterations can be made to the embodiments without departing from the spirit and scope of the invention.
Claims (3)
1. The utility model provides a prefabricated structure grout sleeve joint construction of assembling which characterized in that: the grouting device comprises a steel bar, a grouting sleeve, a steel chisel strip, a grouting hole, a grout discharge hole, a limiting baffle and a rubber ring plug;
a precast concrete component is arranged in the grouting sleeve, and reinforcing steel bars are embedded in the precast concrete component;
the inner wall of the grouting sleeve is circumferentially provided with steel chisel strips, the upper end of the grouting sleeve is provided with grouting holes, and the lower end of the grouting sleeve is provided with grout discharging holes;
the steel chisel strip comprises a steel backing plate, a joint, a spring and a steel shaft pin; the bottom of the joint and the steel backing plate are both provided with a preformed hole, the steel shaft pin penetrates through the preformed holes of the joint and the steel backing plate, the other side of the joint is connected with the steel backing plate through a spring, and the joint and the steel backing plate form an angle of 50-70 degrees and are both inclined towards the middle of the sleeve; thus, the joint can deform, and the steel bar can be conveniently inserted; the joints are distributed with more ends and less middle by taking the center point of the grouting sleeve as a boundary, and the shapes of the joints are matched with the concave grooves of the reinforcing steel bars;
a limiting baffle plate for controlling the insertion depth of the reinforcing steel bars is arranged at the center of the grouting sleeve; the steel chisel strips are symmetrically distributed in the grouting sleeve by taking the limiting baffle as a boundary; and rubber ring plugs are arranged at two ends of the grouting sleeve.
2. The grouting sleeve connection structure of a prefabricated assembly structure according to claim 1, characterized in that: the length of the steel chisel strip is less than half of the length of the grouting sleeve.
3. The grouting sleeve connection structure of a prefabricated assembly structure according to claim 1, characterized in that: the rubber ring plug is in a frustum shape and 18-25mm high.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921370844.XU CN211547357U (en) | 2019-08-22 | 2019-08-22 | Prefabricated structure grout sleeve joint construction of assembling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921370844.XU CN211547357U (en) | 2019-08-22 | 2019-08-22 | Prefabricated structure grout sleeve joint construction of assembling |
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| Publication Number | Publication Date |
|---|---|
| CN211547357U true CN211547357U (en) | 2020-09-22 |
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| CN201921370844.XU Active CN211547357U (en) | 2019-08-22 | 2019-08-22 | Prefabricated structure grout sleeve joint construction of assembling |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110453607A (en) * | 2019-08-22 | 2019-11-15 | 苏交科集团股份有限公司 | Prefabricated pier steel bar connection mode and construction method thereof |
| CN113001749A (en) * | 2021-02-09 | 2021-06-22 | 浙江交工集团股份有限公司 | Column prefabricating construction process |
| CN113775173A (en) * | 2021-09-23 | 2021-12-10 | 河南五建建设集团有限公司 | Outer shear wall indirect-layer stubble reinforcing structure |
-
2019
- 2019-08-22 CN CN201921370844.XU patent/CN211547357U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110453607A (en) * | 2019-08-22 | 2019-11-15 | 苏交科集团股份有限公司 | Prefabricated pier steel bar connection mode and construction method thereof |
| CN113001749A (en) * | 2021-02-09 | 2021-06-22 | 浙江交工集团股份有限公司 | Column prefabricating construction process |
| CN113775173A (en) * | 2021-09-23 | 2021-12-10 | 河南五建建设集团有限公司 | Outer shear wall indirect-layer stubble reinforcing structure |
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