CN110284659A - It is a kind of for double and muscle connect can the fixed grout sleeve of self compaction - Google Patents
It is a kind of for double and muscle connect can the fixed grout sleeve of self compaction Download PDFInfo
- Publication number
- CN110284659A CN110284659A CN201910662104.1A CN201910662104A CN110284659A CN 110284659 A CN110284659 A CN 110284659A CN 201910662104 A CN201910662104 A CN 201910662104A CN 110284659 A CN110284659 A CN 110284659A
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- Prior art keywords
- sleeve body
- sleeve
- double
- grouting
- self
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000011440 grout Substances 0.000 title claims abstract description 25
- 210000003205 muscle Anatomy 0.000 title claims abstract description 13
- 238000005056 compaction Methods 0.000 title abstract 2
- 239000000463 material Substances 0.000 claims abstract description 8
- 238000001125 extrusion Methods 0.000 claims description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 10
- 230000002787 reinforcement Effects 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 238000007569 slipcasting Methods 0.000 claims description 3
- 238000010008 shearing Methods 0.000 abstract 1
- 230000003014 reinforcing effect Effects 0.000 description 8
- 238000010276 construction Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 239000004567 concrete Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000011150 reinforced concrete Substances 0.000 description 3
- 238000004873 anchoring Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000011065 in-situ storage 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
- 238000005259 measurement Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 210000002435 tendon Anatomy 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
- E04C5/162—Connectors or means for connecting parts for reinforcements
- E04C5/163—Connectors or means for connecting parts for reinforcements the reinforcements running in one single direction
- E04C5/165—Coaxial connection by means of sleeves
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses it is a kind of for double and muscle connect can the fixed grout sleeve of self compaction, including having the sleeve body of grouting cavity and upper and lower ends opening；Wherein, the horizontal section of the sleeve body is in 8-shaped, is formed by two neighboring circular sleeve interconnection；The intracorporal middle part of sleeve is connect along limited block, limited block is provided in the plane perpendicular to its axis with sleeve body inner wall, so that grouting cavity is divide into upper part and lower part, injected hole is offered on one end side wall of sleeve body, the other end offers plasma discharge hole；Interval has been evenly arranged several diagonal ribs and shearing slot from top to bottom on sleeve body inner wall；When use state, upper end is double and the double simultaneously muscle of muscle and lower end stretch in sleeve body from the upper and lower ends of sleeve body respectively, double and muscle end face is contacted with limited block, circumferential to contact with diagonal rib, and then is realized by injected hole and plasma discharge hole and grouting material is perfused into grouting cavity.
Description
Technical Field
The invention belongs to the technical field of building structures, and particularly relates to a self-extrusion fixed grouting sleeve for double parallel rib connection.
Background
In reinforced concrete structures, it is common for individual steel reinforcement bars to be arranged in rows. For some high-rise and super high-rise structures or structures needing to bear heavier equipment, the self reinforcing bar distribution amount is larger, so that the diameter of the distributed reinforcing bars is large, and the distance between the distributed reinforcing bars is small. Especially in the node area, various reinforcing bars and anchor crotch staggered arrangement more can cause the reinforcing bar ligature to place the difficulty, cast in situ concrete is difficult to vibrate or even a series of problems of reinforcing bar skew design position, and this can seriously influence concrete structure's construction quality undoubtedly. According to the requirements of 'unified design standard for building structure reliability' GB50068-2018, the load subentry coefficient is increased, the content of steel bars in a common house is increased by 5% through measurement and calculation by structural professionals, and the problem of steel bar density is more prominent.
Sometimes, in order to solve the difficulty of design and construction caused by dense reinforcement arrangement, a reinforcement combining (tendon) mode can be adopted. The parallel ribs are divided into double parallel ribs and three parallel ribs, the double parallel ribs can be arranged longitudinally or transversely, and the three parallel ribs can be arranged in rows or in a delta-shaped manner.
In the connection of the longitudinal bar of the reinforced concrete structure, at present, three connection modes of grouting sleeve, mechanical sleeve and grout anchor overlap joint are mainly adopted. The grouting sleeve connection is divided into full grouting sleeve connection and half grouting sleeve connection, and the grouting sleeve connection is the most common connection of the prefabricated concrete structure; mechanical sleeve connections are divided into threaded connections and compression connections, the most common of which is threaded connections; the slurry anchor lap joint is divided into metal corrugated pipe slurry anchor lap joint and spiral stirrup slurry anchor lap joint, the connection technology cost is lower, but the stress performance is poorer than that of sleeve grouting connection.
The connection mode of the longitudinal ribs is mainly directed at a single rib, and at present, the research on the connection mode of the parallel ribs is less, and the available connection mode is less.
Disclosure of Invention
The invention aims to solve the problem of the deficiency of the double parallel rib connection mode. Aiming at the problem, the invention provides a self-extrusion fixed grouting sleeve for double parallel bars connection, which has reasonable design, can greatly shorten the construction time and meet the requirements of reinforced concrete structures on reinforced connecting members.
In order to achieve the purpose, the invention adopts the technical scheme that:
a self-extrusion fixed grouting sleeve for double parallel rib connection comprises a sleeve body with a grouting cavity and openings at the upper end and the lower end; wherein,
the transverse section of the sleeve body is 8-shaped and is formed by cross-connecting two adjacent circular sleeves;
a limit stop is arranged on the middle part in the sleeve body along a plane perpendicular to the axis of the sleeve body, the limit stop is connected with the inner wall of the sleeve body, so that the grouting cavity is divided into an upper part and a lower part, a grouting hole is formed in the side wall of one end of the sleeve body, and a grout discharging hole is formed in the other end of the sleeve body;
a plurality of inclined ribs and shear grooves are uniformly arranged on the inner wall of the sleeve body at intervals from top to bottom;
during the user state, the upper end is two and the muscle stretches into to the sleeve body with the two and the muscle of lower extreme respectively from the upper and lower both ends of sleeve body, and the terminal surface and the limit stop contact of two and the muscle, circumference and rib contact to one side, and then realize filling the grout material in to the grout chamber through injected hole and row's thick liquid hole.
The invention has the further improvement that the invention also comprises two sealing rings which are respectively sleeved on the double parallel ribs at the openings at the upper end and the lower end of the sleeve body.
The invention is further improved in that the grout discharge holes and the grout injection holes are respectively formed at the upper end and the lower end of the sleeve body.
The invention has the further improvement that when in use, each steel bar in the double parallel bars is concentric with the corresponding circular sleeve.
The invention is further improved in that the reinforcing steel bar joint connecting part of the double parallel bars is a straight thread reinforcing steel bar.
The invention is further improved in that the inclined ribs are 30-degree fan-shaped annular rib plates which are inwards inclined from the inner walls of the upper end and the lower end of the sleeve body respectively and form an included angle of 60 degrees with the inner wall of the sleeve body.
The invention has the further improvement that the inner wall of the sleeve body at the same height and the same side is provided with two inclined ribs, the diameter of the circular arc at the end part of each inclined rib is smaller than that of the reinforcing steel bar with double parallel ribs, the difference is set as n, n is less than 5mm, and the length L of each inclined rib is as follows:
wherein R is the radius of the inner wall of the sleeve body, and R is the radius of the reinforcing steel bar with double parallel bars.
The invention is further improved in that the shear groove is 2mm thick and 4mm long.
The invention is further improved in that the limit stop is positioned in the middle of the sleeve body and is vertically arranged along the axis and the diameter of the sleeve body for three times.
Compared with the prior art, the self-extrusion fixed grouting sleeve for double parallel rib connection provided by the invention has the following advantages:
1. the bifurcate problem that probably exists when two parallel bars insert the cover barrel is overcome, and two parallel bar inserted positions can be accurately controlled.
2. After the reinforcing steel bar is inserted into the sleeve body, the inclined ribs can fix the reinforcing steel bar firstly, so that the subsequent operation is facilitated.
3. Aiming at the problem of poor bonding and anchoring performance of double-parallel-rib connection, the invention ensures the bonding and anchoring strength of the double-parallel-rib connection part in two ways through self-extrusion fixation of the inclined ribs to the reinforcing steel bars and bonding of the reinforcing steel bars and grouting slurry.
4. The operation is convenient, the double parallel bars can be directly inserted and then grouting is carried out, and the problems of wall adhesion and eccentricity of the steel bars do not need to be worried about.
Drawings
FIG. 1 is a transverse cross-sectional view of a diagonal rib;
FIG. 2 is a transverse cross-sectional view of a shear groove;
FIG. 3 is a transverse cross-sectional view of the bump stop;
FIG. 4 is a transverse cross-sectional view of the diagonal ribs after insertion of the reinforcing bars;
FIG. 5 is a longitudinal cross-sectional view of a ribbed area;
FIG. 6 is a longitudinal cross-sectional view of the ribbed portion after insertion of the rebar;
fig. 7 is a longitudinal sectional view of a portion without ribs after inserting reinforcing bars.
Description of reference numerals:
1. the sleeve body, 2, grout cavity, 3, sealing washer, 4, arrange the thick liquid hole, 5, slip casting hole, 6, oblique rib, 7, shear force groove, 8, limit stop, 9, the two muscle of combining in upper end, 10, the two muscle of combining in lower extreme.
Detailed Description
The invention will be further explained with reference to the drawings.
Referring to fig. 1 to 7, the double parallel rib connection self-extrusion fixed grouting sleeve of the invention comprises a sleeve body 1, a grouting cavity 2, a sealing ring 3, a grout discharge hole 4, a grouting hole 5, an inclined rib 6, a shear groove 7 and a limit stop 8.
The sleeve body 1 is 8-shaped, two sealing rings 3 are symmetrically arranged at the upper end and the lower end of the sleeve body 1, and through holes for double parallel ribs (comprising an upper double parallel rib 9 and a lower double parallel rib 10) to penetrate are formed in the sealing rings; the grout discharging holes 4 and the grouting holes 5 are arranged at the side positions of the upper end and the lower end of the sleeve body 1, and the grout discharging holes 4 and the grouting holes 5 are communicated with the grouting cavity 2 so as to ensure that grouting can smoothly circulate; the limit stop 8 is arranged on the middle surface of the vertical axis and is vertically arranged along the axis and the diameter for three times; the oblique ribs 6 and the shear grooves 7 are arranged uniformly at intervals on the side wall of the sleeve body 1.
The number of the shear grooves 7 is determined according to the diameter of the connected steel bars, the diameter is less than 20mm, and the number of the shear grooves at each end is not less than 3 groups; when the diameter is within the range of 22 mm-32 mm, the number of the shear grooves at each end is not less than 4 groups; when the diameter is larger than 32mm, the number of the shear grooves at each end is not less than 5 (one shear groove at the same height). The specific position of the shear groove is shown in figure 3, the thickness is 2mm, and the length is 4 mm.
The inclined rib 6 is made of the same material as the sleeve body 1, and forms an angle of 60 degrees with the inner wall of the sleeve body, and the effective extrusion depth of the inclined rib and the straight thread of the steel bar is difficult to ensure due to too small angle. The inclined ribs are fan-shaped and have an angle of 30 degrees. The number of the inclined ribs is consistent with that of the shear grooves, and the inclined ribs are uniformly arranged at intervals. The diameter of the end part of the inclined rib is smaller than the diameter of the steel bar to be inserted, the difference is set to be n, n is less than 5mm, and the length L of the inclined rib is as follows:
wherein R is the radius of the inner wall of the sleeve body, and R is the radius of the reinforcing steel bar with double parallel bars.
Other parameters refer to grouting sleeve for steel bar connection jg.t 398-2012.
In using the invention, the method comprises the following steps:
the method comprises the following steps: after the grouting sleeve body 1 is manufactured, the sealing ring 3 is required to be installed in a short time so as to prevent impurities from entering the sleeve body 1 to cause pollution and influence on construction quality.
Step two: at the assembly site, the double parallel ribs on the two sides penetrate through the through hole of the sealing ring 3 and are further inserted into the sleeve body 1. After this step is completed, the diagonal ribs 6 have exerted a compressive force on the connected double parallel bars.
Step three: the grout is poured, through slip casting hole 5 and row's thick liquid hole 4 that cover barrel 1 reserved, to pouring the grout material in the grout cavity 2, the grout material should satisfy the standard requirement, and should guarantee that the packing of grout material is closely knit.
Step four: and (5) maintaining, namely maintaining the grouting structure poured with the grouting material according to requirements, and finishing the connection process of the two sections of double parallel ribs after the maintenance is finished.
Claims (9)
1. A self-extrusion fixed grouting sleeve for double parallel rib connection is characterized by comprising a sleeve body (1) which is provided with a grouting cavity (2) and is provided with openings at the upper end and the lower end; wherein,
the transverse section of the sleeve body (1) is 8-shaped and is formed by cross-connecting two adjacent circular sleeves;
a limit stop (8) is arranged in the middle of the sleeve body (1) along a plane perpendicular to the axis of the sleeve body, the limit stop (8) is connected with the inner wall of the sleeve body (1) so that the grouting cavity (2) is divided into an upper part and a lower part, a grouting hole (5) is formed in the side wall of one end of the sleeve body (1), and a grout discharging hole (4) is formed in the other end of the sleeve body;
a plurality of inclined ribs (6) and shear grooves (7) are uniformly arranged on the inner wall of the sleeve body (1) from top to bottom at intervals;
during the user state, two and muscle (9) of upper end and two and muscle (10) of lower extreme stretch into to set barrel (1) from the upper and lower both ends of set barrel (1) respectively in, the terminal surface and the spacing stop (8) contact of two and muscle, circumference and oblique rib (6) contact, and then realize pouring into grouting material in to grout cavity (2) through slip casting hole (5) and row's thick liquid hole (4).
2. The self-extrusion fixed grouting sleeve for double parallel ribs connection according to claim 1, further comprising two sealing rings (3) respectively sleeved on the double parallel ribs at the openings at the upper and lower ends of the sleeve body (1).
3. A self-squeezable fixed grout sleeve for double lay-on connection according to claim 1, wherein grout discharge holes (4) and grout holes (5) are opened at the upper and lower ends of the sleeve body (1), respectively.
4. The self-extrusion fixed grouting sleeve for double parallel bars connection according to claim 1, wherein each steel bar in the double parallel bars is concentric with the corresponding circular sleeve in the use state.
5. The self-crushable fixed grout sleeve for double reinforcement joint according to claim 1, wherein the joint connection part of the double reinforcement is a straight thread steel.
6. A self-extrusion fixed grouting sleeve for double reinforcement connection according to claim 1, characterised in that the inclined ribs (6) are 30 ° fan-shaped annular ribs, which are inwardly inclined from the inner wall of the upper and lower ends of the sleeve body (1) and form an angle of 60 ° with the inner wall of the sleeve body (1).
7. The self-extrusion fixed grouting sleeve for double reinforcement connection according to claim 6, characterized in that two inclined ribs (6) are arranged on the inner wall of the sleeve body (1) at the same side at the same height, the diameter of the circular arc at the end of the inclined rib (6) is smaller than that of the steel bar of the double reinforcement, the difference is n, n is less than 5mm, and the length L of the inclined rib is:
wherein R is the radius of the inner wall of the sleeve body, and R is the radius of the reinforcing steel bar with double parallel bars.
8. A self-crushable fixed grout sleeve for double ribbing according to claim 1 wherein the shear grooves (7) are 2mm thick and 4mm long.
9. A self-squeezable fixed grout sleeve for double ribbing according to claim 1 wherein the limit stop (8) is located right in the middle of the sleeve body (1) and is vertically arranged three times along the axis and diameter of the sleeve body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910662104.1A CN110284659A (en) | 2019-07-22 | 2019-07-22 | It is a kind of for double and muscle connect can the fixed grout sleeve of self compaction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910662104.1A CN110284659A (en) | 2019-07-22 | 2019-07-22 | It is a kind of for double and muscle connect can the fixed grout sleeve of self compaction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110284659A true CN110284659A (en) | 2019-09-27 |
Family
ID=68023617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910662104.1A Pending CN110284659A (en) | 2019-07-22 | 2019-07-22 | It is a kind of for double and muscle connect can the fixed grout sleeve of self compaction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110284659A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112726964A (en) * | 2020-12-30 | 2021-04-30 | 西安建筑科技大学 | Screw thread grout sleeve suitable for two muscle of merging are connected side by side |
| CN113073791A (en) * | 2021-04-07 | 2021-07-06 | 上海市城市建设设计研究总院（集团）有限公司 | Tendon connection grouting sleeve for assembled structure |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011006876A (en) * | 2009-06-24 | 2011-01-13 | Godo Steel Ltd | Reinforcement joint structure with one end side open type sleeve |
| CN107023121A (en) * | 2017-04-28 | 2017-08-08 | 广东省建科建筑设计院有限公司 | A kind of reinforcing bar grout sleeve connected for prefabricated concrete structure ductility |
| CN107740543A (en) * | 2017-11-28 | 2018-02-27 | 湖南大学 | A kind of connection of double and muscle full grout sleeve and double and muscle connection method |
| CN109098358A (en) * | 2018-07-09 | 2018-12-28 | 东南大学 | A kind of self-locking reinforcing bar connection grout sleeve |
| CN109944394A (en) * | 2019-04-08 | 2019-06-28 | 重庆交通大学 | A kind of assembled architecture sleeve grouting connector and its application method |
| CN211691081U (en) * | 2019-07-22 | 2020-10-16 | 西安建筑科技大学 | Self-extrusion fixed grouting sleeve for double parallel ribs connection |
-
2019
- 2019-07-22 CN CN201910662104.1A patent/CN110284659A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011006876A (en) * | 2009-06-24 | 2011-01-13 | Godo Steel Ltd | Reinforcement joint structure with one end side open type sleeve |
| CN107023121A (en) * | 2017-04-28 | 2017-08-08 | 广东省建科建筑设计院有限公司 | A kind of reinforcing bar grout sleeve connected for prefabricated concrete structure ductility |
| CN107740543A (en) * | 2017-11-28 | 2018-02-27 | 湖南大学 | A kind of connection of double and muscle full grout sleeve and double and muscle connection method |
| CN109098358A (en) * | 2018-07-09 | 2018-12-28 | 东南大学 | A kind of self-locking reinforcing bar connection grout sleeve |
| CN109944394A (en) * | 2019-04-08 | 2019-06-28 | 重庆交通大学 | A kind of assembled architecture sleeve grouting connector and its application method |
| CN211691081U (en) * | 2019-07-22 | 2020-10-16 | 西安建筑科技大学 | Self-extrusion fixed grouting sleeve for double parallel ribs connection |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112726964A (en) * | 2020-12-30 | 2021-04-30 | 西安建筑科技大学 | Screw thread grout sleeve suitable for two muscle of merging are connected side by side |
| CN113073791A (en) * | 2021-04-07 | 2021-07-06 | 上海市城市建设设计研究总院（集团）有限公司 | Tendon connection grouting sleeve for assembled structure |
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