CN208280017U - A kind of half grouting reinforced steel coupling sleeve of prefabricated assembled column - Google Patents
A kind of half grouting reinforced steel coupling sleeve of prefabricated assembled column Download PDFInfo
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- CN208280017U CN208280017U CN201820178318.2U CN201820178318U CN208280017U CN 208280017 U CN208280017 U CN 208280017U CN 201820178318 U CN201820178318 U CN 201820178318U CN 208280017 U CN208280017 U CN 208280017U
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- sleeve
- column
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- cushion cap
- grout sleeve
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Abstract
The utility model discloses a kind of half grouting reinforced steel coupling sleeves of prefabricated assembled column, including sleeve body, the sleeve body is embedded in column, it is characterized in that the sleeve body is divided into three sections: internal thread segment, the internal thread segment is located at the top of sleeve body, is connect by internal screw thread with column reinforcing bar；Grout sleeve section, the grout sleeve section is located at the lower part of sleeve body, containing inner cavity substantially symmetrical about its central axis, cushion cap reserved steel bar protrudes into grout sleeve section inner cavity, integral by connecting cushion cap reserved steel bar with grout sleeve section to the high-intensitive non-shrinkage cement-based grouting material of grout sleeve section inner cavity injection；Conical transition section, the conical transition section open up slurry outlet in conical transition section for connecting internal thread segment and grout sleeve section obliquely upward.The utility model guarantees that prefabricated stand column is reliably connected with cushion cap, meets the switching performance requirement under the unfavorable operating condition such as macroseism by special connecting structure design and construction technique.
Description
Technical field
The utility model relates to technical field of bridge engineering, and in particular to a kind of half grouting reinforcement of prefabricated assembled column
Connect sleeve.
Background technique
Since support cast-in-place construction area is more, effect on environment is big, it is difficult to meet green, rapid construction requirement；And it is pre-
Packaged type bridges processed are high with batch production degree, standardized production is high-quality, speed of application is fast, project cost is low and environmentally protective
The features such as, it is gradually promoted and is used in the structure of bridge upper and lower part.And bridge lower pole carries out prefabrication and assembly constructionization construction
The technological difficulties of most critical are then the Construction treatments for being column root Yu cushion cap connecting portion.
In the prefabricated construction of the prior art, the connection of prefabricated stand column and cushion cap mainly passes through grout sleeve and realizes steel
Muscle connection, assembled seam is located at column bottom and cushion cap is crossed interface, and reinforced bar sleeve is located at the prefabricated stand column bottom section on cushion cap.
Since bridge is big with grout sleeve size, single steel bar connection sleeve outer diameter is typically up to 70 ~ 100mm, and length reaches
800mm or so, causes that sleeve is matched with column concrete section and cooperative bearing performance is poor, especially with outside protective layer coagulation
Soil can not good combination, under hysteresis reciprocating load, column bottom concrete cover is easy to fall off.Simultaneously as pre-
Column assembly seam processed is located at column bottom and cushion cap is crossed the least favorable force part on boundary, makees in the loads such as longitudinal horizontal force and earthquake
Under, there is tension and compression stress repeatedly in above-mentioned reinforced concrete upright column bottom assembly seam edge, forms weak link, earthquake-resistant structure etc.
Stress performance is poor.Therefore, it is necessary to design a kind of half grouting reinforced steel coupling sleeve, the top of the connection sleeve is embedded in column,
Bottom can be embedded in cushion cap, guarantee that prefabricated stand column is reliably connected with cushion cap, not form plane of weakness, cover concrete at column bottom
It is not easy to peel off, meets the switching performance requirement under the unfavorable operating condition such as macroseism.
Utility model content
The purpose of this utility model is to provide a kind of half grouting reinforced steel coupling sleeve of prefabricated assembled column, the connections
Sleeve is embedded in prefabricated stand column, for connecting prefabricated stand column and cushion cap, it is ensured that prefabricated stand column is reliably connected with cushion cap, is not existed
Column bottom forms plane of weakness, and cover concrete is not easy to peel off, and meets the switching performance requirement under the unfavorable operating condition such as macroseism.
In order to achieve the above object, the utility model is achieved through the following technical solutions:
A kind of prefabricated assembled column half grouting reinforced steel coupling sleeve, including sleeve body, the sleeve body are pre-buried
In prefabricated stand column, it is characterised in that the sleeve body is divided into three sections:
Internal thread segment, the internal thread segment are located at the top of sleeve body, are connect by internal screw thread with column reinforcing bar；
Grout sleeve section, the grout sleeve section are located at the lower part of sleeve body, containing inner cavity substantially symmetrical about its central axis, the filling
Slurry sleeve sections are for connecting cushion cap reserved steel bar, by injecting high-intensitive non-shrinkage cement-based grouting material to grout sleeve section inner cavity
Cushion cap reserved steel bar is connect with grout sleeve section integral；
Conical transition section, the conical transition section are used to connect internal thread segment and grout sleeve section, and in cone
Changeover portion opens up slurry outlet obliquely upward.
Further, the internal thread segment length is 1.0d ~ 1.2d, and the outer diameter of internal thread segment is 1.45d ~ 1.55d, and d is
The diameter of column reinforcing bar.
Further, the grout sleeve segment length is between 250 ~ 400mm, and outer diameter is between 70 ~ 100mm.
Further, the conical transition slope over 10 is between 1:2 ~ 1:4, to obtain good transition transmission force property,
Reinforcing bar error in length is protruded into adjusting, and it is closely knit to be conducive to be in the milk.
Further, the grout sleeve section outer wall is disposed with criss-cross outer fin, and the outer fin is grid-shaped
Arrangement, the outer fin height is between 3 ~ 7mm, and rib width is between 2 ~ 3mm, longitudinal rib 30 ~ 60mm of spacing, and cross rib spacing 25 ~
40mm.Increase the binding performance with concrete by the outer fin, and increases the hoop rigidity of grout sleeve wall.
Further, grout sleeve section inner cavity is equipped with several interior fins, and the spacing of interior fin is 50 ~ 80mm, and cushion cap is pre-
Stay reinforcing bar that can obtain good bond property.
Further, groove is set at the top of cushion cap, and prefabricated stand column bottom is protruded into the cushion cap groove, recessed in the cushion cap
Casting concrete in slot, depth h >=T+50 of cushion cap groove, T is the length of grout sleeve section, so that pre-buried in prefabricated stand column
Grout sleeve be entirely located within the scope of cushion cap depth of groove, avoid sleeve column bottom structure stress and concrete cover
It has an impact.
A kind of prefabricated assembled column of the utility model has compared with prior art with half grouting reinforced steel coupling sleeve
Following advantages:
Upper end is connect by screw thread with column reinforcing bar, and sets conical transition section, makes grout sleeve connection length compared to biography
Full grout sleeve of uniting reduces 1/2, while saving material, reduces to the weakening of lower concrete and the influence of stress, improves
Anti-seismic performance, while the grout sleeve section of prefabricated stand column being made to be able to be wholly embedded into inside cushion cap, so that connecting sewing be avoided to be arranged
In column bottom plane of weakness and grout sleeve caliber it is big caused by protective layer the problems such as easily peeling off, make column bottom concrete by
Power is greatly improved；
Conical transition section is arranged in sleeve, and while enhancing sleeve transition transmission force property, cone cavity stretches cushion cap
Reinforcing bar error in length has regulation performance out, increases sleeve adaptability；
Slurry outlet is opened up obliquely upward in sleeve conical transition section, it can be ensured that inner cavity grouting is closely knit, so that sleeve is under
End bar and cushion cap securely connect；
Grout sleeve section outer wall is provided with criss-cross outer fin, increases the binding performance with concrete, and increase filling
Starch the hoop rigidity of sleeve wall；
With upper end column reinforcing bar be threaded in precast construction concreting before complete, convenient for be accurately positioned, under
The grouting of end cushion cap reinforcing bar is connected to precast construction installation rear completion in place, and it is convenient to construct, and application prospect is extensive.
Detailed description of the invention
Fig. 1 is the elevational schematic view of prefabricated assembled member connecting structure in the prior art.
Fig. 2 is the structural schematic diagram of prefabricated assembled component reinforcing steel bar connecting sleeve tube in the prior art.
Fig. 3 is to be illustrated using the column of half grouting reinforced steel coupling sleeve of the utility model and the facade of cushion cap connection structure
Figure.
Fig. 4 is the utility model grout sleeve section cross-section diagram.
Fig. 5 is the reserved groove schematic diagram of cushion cap in the utility model.
Fig. 6 is the structural schematic diagram of reinforcing steel bar connecting sleeve tube in the utility model.
Specific embodiment
The utility model is done and is further explained by the way that a preferable specific embodiment is described in detail below in conjunction with attached drawing
It states.
It include: reinforcing steel bar connecting sleeve tube 1, prefabricated stand column 2, cushion cap 3, cylindrical body 100, internal thread segment 101, grouting set in figure
Cylinder section 102, conical transition section 103, inner cavity 104, injected hole 105, slurry outlet 106, high-intensitive non-shrinkage cement-based grouting material
107, column reinforcing bar 201, cushion cap groove 300, cushion cap reserved steel bar 301, drain hole 303, construction bar dowel 304, after pour coagulation
Soil 305.
It is as shown in figures 3 to 6 a kind of prefabricated assembled column half grouting reinforced steel coupling sleeve and its connecting structure, packet
Contain: reinforcing steel bar connecting sleeve tube 1, prefabricated stand column 2, cushion cap 3.
Reinforcing steel bar connecting sleeve tube 1, includes cylindrical body 100, and the cylindrical body 100 uses cast steel or high-quality spheroidal graphite cast iron system
It makes, is divided into three sections:
Internal thread segment 101, the internal thread segment 101 are located at the top of sleeve body, after tightening with upper end column reinforcing bar 201
Securely connection, the internal thread segment length are 1.0d ~ 1.2d, and d is the diameter of column reinforcing bar 201.
Grout sleeve section 102, the grout sleeve section are located at the lower part of sleeve body, containing inner cavity 104 substantially symmetrical about its central axis,
A plurality of interior fin 111 is equipped in inner cavity 104, the spacing of the interior fin 111 is 50 ~ 80mm, and cushion cap reserved steel bar 301 protrudes into institute
The inner cavity 104 for stating grout sleeve section, by injecting high-intensitive non-shrinkage cement-based grouting to inner cavity in sleeve bottom end injected hole 105
The reserved reinforcing bar 301 that stretches out of cushion cap is connect with grout sleeve section 102 integral by material 107, and the grout sleeve section 102 is T long general
Between 250 ~ 400mm, outer diameter D is between 70 ~ 100mm.
Conical transition section 103, the conical transition section 103 is for connecting internal thread segment 101 and grout sleeve section
102, and slurry outlet 106 is opened up obliquely upward in the conical transition section 103, detachable Grouting Pipe 108 is connected outside injected hole
With stop grouting plug 109.103 outer diameter of the conical transition section variation slope is between 1:2 ~ 1:4, to obtain good transition power transmission
Reinforcing bar error in length is protruded into performance, adjusting, and it is closely knit to be conducive to be in the milk.
The grout outlet 110 uses nonmagnetic sheathed cable substance transparent material, conducive to extra grouting material 107 is discharged and observes in grout outlet
Slurries change in location situation checks whether grouting is closely knit with this.
Prefabricated stand column 2, the interior column reinforcing bar 201 that main stress is arranged along stem height direction, the column reinforcing bar 201
Lower end is connected through a screw thread reinforcing steel bar connecting sleeve tube 1, and reinforcing steel bar connecting sleeve tube 1, sleeve bottom end are embedded to before 2 concreting of prefabricated stand column
It is concordant with column bottom end.
Cushion cap 3 reserves groove 300 at the top of the cushion cap 3, and cushion cap reserved steel bar is stretched out in 300 bottom surface of groove upwards
301, and after groove-bottom and column joint face region fill 2 ~ 3cm thickness mortar joint layer 302, prefabricated stand column 2 is put into described
300 bottom of cushion cap groove, the reserved steel bar 301 protrude into the pre-buried grout sleeve inner cavity 104 of prefabricated stand column 2, and connection of being in the milk,
Finally by rest casting concrete 305 around cushion cap groove 300 and prefabricated stand column, complete structure is formed；
It is rectangle or polygon that the cushion cap, which reserves groove plane, and side is for plummet face or with plummet face angle less than 10 °
Inclined surface, bottom portion of groove be arranged drain hole 303, groove floor stretch out cushion cap reserved steel bar 301 and prefabricated stand column lower end it is pre-
It is corresponding to bury 1 planar central position of sleeve, deviation≤2mm；
In certain embodiments, cushion cap reserves groove 300 in addition to stretching out connection reinforcing bar 301 with column contact surface, also recessed
The reserved construction bar dowel 304 in the bottom surface and side that slot is connect with rear pouring concrete 305, rear pouring concrete 305 is interior to be arranged construction steel
Muscle；
The cross section of preferred embodiment according to the present utility model, the cushion cap groove 300 is square, and the cushion cap is pre-
Stay the depth h of groove 300 in following range:
1) h >=L/5, L are the side length of prefabricated stand column 2, to meet prefabricated stand column build-in needs, it is ensured that assembled seam does not occur
It destroys；
2) h >=T+50, T are the length of grout sleeve 102, unit mm, so that grout sleeve pre-buried in prefabricated stand column
It is entirely located within the scope of cushion cap depth of groove, i.e. completion post-grouting sleeve is located in platform big volume concrete, avoids sleeve pair
Column bottom structure stress and concrete cover have an impact；
3) h≤H/4, H are the thickness of cushion cap 3, to meet cushion cap stress needs, avoid generating larger shadow to suspended deck structure
It rings.
The grout sleeve segment length T can preferably meet cushion cap and reserve 300 depth h's of groove between 250 ~ 400mm
The requirement；
The cushion cap reserves the width B of groove between L+h ~ L+3h, and L is the side length of prefabricated stand column 2, and h is groove
300 depth so that the concrete 305 that groove and prefabricated stand column peripheral clearance pour meets structure stress requirement, and has
Good construction operability.
The characteristics of the utility model, is:
Subtracted using the half grouting reinforced steel coupling sleeve grout sleeve segment length of the utility model compared to the full grout sleeve of tradition
Few 1/2, so that half grouting reinforced steel coupling sleeve being embedded in prefabricated stand column facilitates inside embedment cushion cap, connecting sewing is avoided to be arranged
In column bottom plane of weakness and grout sleeve caliber it is big caused by protective layer the problems such as easily peeling off, make column bottom concrete by
Power is greatly improved；
Conical transition section is arranged in sleeve, and while enhancing sleeve transition transmission force property, cone cavity stretches cushion cap
Reinforcing bar error in length has regulation performance out, increases sleeve adaptability；
Slurry outlet is opened up obliquely upward in sleeve conical transition section, it can be ensured that inner cavity grouting is closely knit, so that sleeve is under
End bar and cushion cap securely connect；
It is provided with criss-cross outer fin 112 in grout sleeve section outer wall, increases the binding performance with concrete, and increase
Add the hoop rigidity of grout sleeve wall, improves and hoop performance is held to connection reinforcing bar；
With upper end bar be threaded in precast construction concreting before complete, convenient for be accurately positioned, with lower end steel
The grouting of muscle is connected to precast construction installation rear completion in place, and pouring concrete is not necessarily to formwork after cushion cap groove, and it is convenient to construct, and answers
It is extensive with prospect.
It is discussed in detail although the content of the utility model has passed through above preferred embodiment, but it should be appreciated that on
The description stated is not considered as limitations of the present invention.After those skilled in the art have read above content, for
A variety of modifications and substitutions of the utility model all will be apparent.Therefore, the protection scope of the utility model should be by appended
Claim limit.
Claims (7)
1. a kind of prefabricated assembled column half grouting reinforced steel coupling sleeve, including sleeve body, the sleeve body are embedded in
In prefabricated stand column, it is characterised in that the sleeve body is divided into three sections:
Internal thread segment, the internal thread segment are located at the top of sleeve body, are connect by internal screw thread with column reinforcing bar, the interior spiral shell
Line segment length is 1.0d ~ 1.2d, and the outer diameter of internal thread segment is 1.45d ~ 1.55d, and d is the diameter of column reinforcing bar；
Grout sleeve section, the grout sleeve section is located at the lower part of sleeve body, containing inner cavity substantially symmetrical about its central axis, the grouting set
Cylinder section is for connecting cushion cap reserved steel bar, by that will hold to the high-intensitive non-shrinkage cement-based grouting material of grout sleeve section inner cavity injection
Platform reserved steel bar connect with grout sleeve section it is integral, the grout sleeve segment length between 250 ~ 400mm, outer diameter between
Between 70 ~ 100mm；
Conical transition section, the conical transition section are used to connect internal thread segment and grout sleeve section, and in conical transition
Section opens up slurry outlet obliquely upward.
2. half grouting reinforced steel coupling sleeve of prefabricated assembled column as described in claim 1, which is characterized in that the interior spiral shell
Line segment length is 1.0d ~ 1.2d, and the outer diameter of internal thread segment is 1.45d ~ 1.55d, and d is the diameter of column reinforcing bar.
3. half grouting reinforced steel coupling sleeve of prefabricated assembled column as described in claim 1, which is characterized in that the grouting
Sleeve segment length is between 250 ~ 400mm, and outer diameter is between 70 ~ 100mm.
4. half grouting reinforced steel coupling sleeve of prefabricated assembled column as described in claim 1, which is characterized in that the circular cone
Shape transition slope over 10 is between 1:2 ~ 1:4.
5. half grouting reinforced steel coupling sleeve of prefabricated assembled column as described in claim 1, which is characterized in that the grouting
Sleeve sections outer wall is disposed with criss-cross outer fin, and the outer grid-shaped arrangement of fin, the outer fin height is in 3 ~ 7mm
Between, rib width is between 2 ~ 3mm, longitudinal rib 30 ~ 60mm of spacing, 25 ~ 40mm of cross rib spacing.
6. half grouting reinforced steel coupling sleeve of prefabricated assembled column as described in claim 1, which is characterized in that grout sleeve
Section inner cavity is equipped with several interior fins, and the spacing of interior fin is 50 ~ 80mm.
7. half grouting reinforced steel coupling sleeve of prefabricated assembled column as described in claim 1, which is characterized in that at the top of cushion cap
Reserved groove, prefabricated stand column bottom are protruded into the cushion cap groove, the casting concrete in the cushion cap groove, cushion cap groove
Depth h >=T+50, T are the length of grout sleeve section, so as to be entirely located in cushion cap recessed for grout sleeve pre-buried in prefabricated stand column
Within the scope of groove depth, sleeve column bottom structure stress and concrete cover is avoided to have an impact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820178318.2U CN208280017U (en) | 2018-02-01 | 2018-02-01 | A kind of half grouting reinforced steel coupling sleeve of prefabricated assembled column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820178318.2U CN208280017U (en) | 2018-02-01 | 2018-02-01 | A kind of half grouting reinforced steel coupling sleeve of prefabricated assembled column |
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| Publication Number | Publication Date |
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| CN208280017U true CN208280017U (en) | 2018-12-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820178318.2U Active CN208280017U (en) | 2018-02-01 | 2018-02-01 | A kind of half grouting reinforced steel coupling sleeve of prefabricated assembled column |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112458872A (en) * | 2020-11-27 | 2021-03-09 | 中建五局土木工程有限公司 | Construction method for post-cast strip steel rib flexible connection of track bridge |
-
2018
- 2018-02-01 CN CN201820178318.2U patent/CN208280017U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112458872A (en) * | 2020-11-27 | 2021-03-09 | 中建五局土木工程有限公司 | Construction method for post-cast strip steel rib flexible connection of track bridge |
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