CN110284660A - It is a kind of in a row three and muscle connection can the fixed grout sleeve of self compaction - Google Patents
It is a kind of in a row three and muscle connection can the fixed grout sleeve of self compaction Download PDFInfo
- Publication number
- CN110284660A CN110284660A CN201910662133.8A CN201910662133A CN110284660A CN 110284660 A CN110284660 A CN 110284660A CN 201910662133 A CN201910662133 A CN 201910662133A CN 110284660 A CN110284660 A CN 110284660A
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- Prior art keywords
- sleeve body
- sleeve
- parallel
- grouting
- ribs
- Prior art date
- 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.)
- Pending
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- 239000011440 grout Substances 0.000 title claims abstract description 25
- 210000003205 muscle Anatomy 0.000 title claims abstract description 12
- 238000005056 compaction Methods 0.000 title abstract 2
- 239000000463 material Substances 0.000 claims abstract description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 19
- 239000010959 steel Substances 0.000 claims description 19
- 238000001125 extrusion Methods 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 5
- 241000219122 Cucurbita Species 0.000 claims description 3
- 235000009852 Cucurbita pepo Nutrition 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 238000007569 slipcasting Methods 0.000 claims description 3
- 239000008267 milk Substances 0.000 abstract 1
- 210000004080 milk Anatomy 0.000 abstract 1
- 235000013336 milk Nutrition 0.000 abstract 1
- 238000010008 shearing Methods 0.000 abstract 1
- 230000003014 reinforcing effect Effects 0.000 description 8
- 239000004567 concrete Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 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)
- Reinforcement Elements For Buildings (AREA)
Abstract
The invention discloses it is a kind of in a row three and muscle connection can the fixed grout sleeve of self compaction, including have grouting cavity and upper and lower ends opening sleeve body；Wherein, the horizontal section of the sleeve body is in sugarcoated haws shape, three circular sleeves being set side by side by same plane, what two neighboring circular sleeve interconnection was formed；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, simultaneously muscle stretches in sleeve body from the upper and lower ends of sleeve body respectively for upper end three and muscle and lower end three, three and the end face of muscle contacted with limited block, it is circumferential to be contacted with diagonal rib, and then realized by injected hole and plasma discharge hole and grouting material is perfused to being in the milk in 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 connecting rows of three parallel ribs.
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 requirement 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 nearly 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 insufficiency of the three-parallel-rib connection mode. Aiming at the problem, the invention provides a self-extrusion fixed grouting sleeve for connecting rows of three parallel bars, which has reasonable design, can greatly shorten the construction time and meet the requirements of a steel bar connecting member in an assembled concrete structure.
In order to achieve the purpose, the invention adopts the technical scheme that:
a self-extrusion fixed grouting sleeve for connecting in rows of three parallel ribs 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 in a shape of a candied gourd and is formed by three circular sleeves which are arranged in parallel on the same plane and two adjacent circular sleeves which are connected in a cross way;
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;
when the grouting device is in use, the upper end III and the lower end III extend into the sleeve body from the upper end and the lower end of the sleeve body respectively, the end faces of the III and the ribs are in contact with the limit stop blocks, the circumferential direction of the III and the ribs are in contact with the inclined ribs, and grouting materials are filled into the grouting cavity through the grouting holes and the grout discharging holes.
The invention has the further improvement that the invention also comprises two sealing rings which are respectively sleeved on the three 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 three parallel bars is concentric with the corresponding circular sleeve.
The invention is further improved in that the steel bar joint connecting part of the three parallel bars is a straight thread 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 three inclined ribs, the diameter of the circular arc at the end part of each inclined rib is smaller than that of the steel bar with three 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 steel bar of the three 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 four paths are vertically arranged along the axis and the diameter of the sleeve body.
Compared with the prior art, the self-extrusion fixed grouting sleeve for connecting the three parallel ribs in rows has the following advantages:
1. the bifurcate problem that probably exists when having overcome the three parallel muscle in row and inserting the cover barrel is can accurate control three parallel muscle inserted positions.
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 three-parallel-rib connection, the invention ensures the bonding and anchoring strength of the double-parallel-rib connection part in two modes through self-extrusion fixation of the inclined ribs to the steel bars and bonding of the steel bars and grouting slurry.
4. The operation is convenient, the three parallel bars can be directly inserted and then grouted, 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, three muscle on the upper end, 10, three muscle on the lower extreme.
Detailed Description
The invention will be further explained with reference to the drawings.
Referring to fig. 1 to 7, the self-extrusion fixed grouting sleeve for connecting in rows of three parallel ribs provided by 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 shaped like a candied gourd, two sealing rings 3 are symmetrically arranged at the upper end and the lower end of the sleeve body 1, and each sealing ring 3 is provided with a through hole for three parallel ribs (comprising an upper end three parallel rib 9 and a lower end three parallel rib 10) to pass through; the grout discharging holes 4 and the grouting holes 5 are arranged at the side wall 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 sleeve body 1, which is vertical to the axis, and is vertically arranged along the axis and the diameter for four times. The inclined ribs 6 and the shear grooves 7 are arranged at regular intervals on the inner 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 7 is shown in FIG. 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 6 are fan-shaped annular rib plates, and the angle of the inclined ribs is 30 degrees. The number of the inclined ribs 6 is consistent with that of the shear grooves 7, and the inclined ribs are uniformly arranged at intervals. The diameter of the end part of the inclined rib 6 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 steel bar to be inserted.
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 three parallel ribs on the two sides penetrate through the through hole of the sealing ring 3 and then are inserted into the sleeve body. After this step is completed, the diagonal ribs already exert a compressive force on the connected three parallel ribs.
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 the rows of the three parallel ribs after the maintenance is finished.
Claims (9)
1. A self-extrusion fixed grouting sleeve for connecting rows of three parallel ribs 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 in a shape of a candied gourd, and the sleeve body is formed by three circular sleeves which are arranged in parallel on the same plane and two adjacent circular sleeves which are connected in a cross way;
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, three and muscle (9) in upper end and three and muscle (10) in lower extreme stretch into sleeve barrel (1) from the upper and lower both ends of sleeve barrel (1) respectively in, the terminal surface and the spacing stop (8) contact of three 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 the connection of three parallel ribs in a row according to claim 1, further comprising two sealing rings (3) respectively sleeved on the three parallel ribs at the openings at the upper and lower ends of the sleeve body (1).
3. A self-squeezable fixed grout sleeve for ganged rebar junction according to claim 1 wherein the grout holes (4) and the grout holes (5) are provided at the upper and lower ends of the sleeve body (1) respectively.
4. A self-squeeze fixed grout sleeve for in-line three-parallel bar connection according to claim 1, wherein each bar in the three-parallel bar is concentric with the corresponding circular sleeve when in use.
5. The self-crushable fixed grout sleeve for the connection of the three parallel bars in a row according to claim 1, wherein the joint connection part of the three parallel bars is a straight twisted bar.
6. A self-extrusion fixed grouting sleeve for row-wise three-parallel rib 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) at an angle of 60 ° to the inner wall of the sleeve body (1).
7. The self-extrusion fixed grouting sleeve for the connection of three parallel ribs in a row according to claim 6 is characterized in that three inclined ribs (6) are arranged on the inner wall of the sleeve body (1) at the same height and on the same side, the diameter of the circular arc at the end part of each inclined rib (6) is smaller than that of the steel bar of the three parallel ribs, the difference is 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 steel bar of the three parallel bars.
8. A self-crushable fixed grout sleeve for a row of three parallel ribs according to claim 1 wherein the shear grooves (7) are 2mm thick and 4mm long.
9. A self-squeezable fixed grout sleeve for ganged three-parallel rib joints according to claim 1, wherein the limit stop (8) is located right in the middle of the sleeve body (1), and four passages are vertically arranged along the axis and diameter of the sleeve body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910662133.8A CN110284660A (en) | 2019-07-22 | 2019-07-22 | It is a kind of in a row three and muscle connection can the fixed grout sleeve of self compaction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910662133.8A CN110284660A (en) | 2019-07-22 | 2019-07-22 | It is a kind of in a row three and muscle connection can the fixed grout sleeve of self compaction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110284660A true CN110284660A (en) | 2019-09-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910662133.8A Pending CN110284660A (en) | 2019-07-22 | 2019-07-22 | It is a kind of in a row three and muscle connection can the fixed grout sleeve of self compaction |
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| Country | Link |
|---|---|
| CN (1) | CN110284660A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111456329A (en) * | 2020-03-30 | 2020-07-28 | 无锡市政设计研究院有限公司 | Connecting structure of right-angle connecting part of reinforcing steel bars and construction method of connecting structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205935421U (en) * | 2016-08-18 | 2017-02-08 | 安徽建筑大学 | Novel full grout sleeve that can spacing reinforcing bar |
| CN107989272A (en) * | 2017-11-28 | 2018-05-04 | 湖南大学 | One kind three and muscle are in a row connected with full grout sleeve and three and muscle connection method in a row |
| CN108678287A (en) * | 2018-04-27 | 2018-10-19 | 东南大学 | A kind of bar connecting full grout sleeve of slurry pin bank conjunction |
| CN109098358A (en) * | 2018-07-09 | 2018-12-28 | 东南大学 | A kind of self-locking reinforcing bar connection grout sleeve |
-
2019
- 2019-07-22 CN CN201910662133.8A patent/CN110284660A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205935421U (en) * | 2016-08-18 | 2017-02-08 | 安徽建筑大学 | Novel full grout sleeve that can spacing reinforcing bar |
| CN107989272A (en) * | 2017-11-28 | 2018-05-04 | 湖南大学 | One kind three and muscle are in a row connected with full grout sleeve and three and muscle connection method in a row |
| CN108678287A (en) * | 2018-04-27 | 2018-10-19 | 东南大学 | A kind of bar connecting full grout sleeve of slurry pin bank conjunction |
| CN109098358A (en) * | 2018-07-09 | 2018-12-28 | 东南大学 | A kind of self-locking reinforcing bar connection grout sleeve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111456329A (en) * | 2020-03-30 | 2020-07-28 | 无锡市政设计研究院有限公司 | Connecting structure of right-angle connecting part of reinforcing steel bars and construction method of connecting structure |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190927 |
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| RJ01 | Rejection of invention patent application after publication |