CN104563396A - Pier-extruded and half-grouted steel bar sleeve, connecting structure and construction method - Google Patents
Pier-extruded and half-grouted steel bar sleeve, connecting structure and construction method Download PDFInfo
- Publication number
- CN104563396A CN104563396A CN201410812670.3A CN201410812670A CN104563396A CN 104563396 A CN104563396 A CN 104563396A CN 201410812670 A CN201410812670 A CN 201410812670A CN 104563396 A CN104563396 A CN 104563396A
- Authority
- CN
- China
- Prior art keywords
- sleeve
- pressed end
- slurry
- pressed
- connecting reinforcement
- 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
Links
Abstract
The invention provides a pier-extruded and half-grouted steel bar sleeve, a connecting structure and a construction method thereof. The sleeve is a hot-rolling seamless steel pipe, a grouting hole and a slurry discharging hole are formed in the sleeve wall of the sleeve, an annular inner projection is distributed between the grouting hole and the slurry discharging hole, one end of the sleeve is an extrusion end, the rest part is a grouting-anchoring end, the inner diameter of the extrusion end is equal to the outer diameter of connected steel bars and smaller than the inner diameter of the grouting-anchoring end, and the grouting hole, the slurry discharging hole and the annular inner projection are positioned at the grouting-anchoring end. The steel bars are connected through the half-grouted steel bar sleeve, part of one end of the sleeve is connected with the steel bar by an extrusion connection technology, and the other part of the sleeve is still connected with the steel bar in a grouting mode. The connecting structure can be widely applied to the steel bar connection of prefabricated concrete columns in a multi-high-layer prefabricated assembly type concrete framework structure, a shear wall structure or a framework shear wall structure as well as the horizontal steel bar connection of prefabricated concrete beams, the steel bar connection of prefabricated concrete shear walls and steel bar connection in the conventional reinforcing engineering.
Description
Technical field
The present invention relates to a kind of grout sleeve and construction method thereof.
Background technology
At present, in precast and assembled reinforced concrete structural system, adopt is equal to cast-in-place method for designing more, and this proposes very high requirement to the reliability of the bar connecting between prefabricated units, meanwhile, in this system, also there is following problem:
1, the bar splicing adopted in traditional cast-in-place structural and welding connecting mode are not suitable for the technological requirement of prefabricated units assembling;
2, existing cast steel grout sleeve adopts precision casting process, and easily produce casting flaw, quality not easily ensures, cost is high;
3, the grout sleeve processed of existing rod iron machine cut mode, cutwork amount is large, and cost is high;
4, the existing full grout sleeve by manufacturing finished product seamless steel pipe rolling technology, although processing cost is not high, sleeve dimensions is long, causes reinforcing bar encrypted area scope around connected node large; The annular inwardly projecting quantity of roll forming is many, and working (machining) efficiency is low.
Summary of the invention
The object of this invention is to provide a kind of pier nose and extrude half grouting reinforcement sleeve, syndeton and construction method thereof, solve that existing grout sleeve working (machining) efficiency is low, the technical problem of complex process; And solve the problem improving bar connecting reliability.
For achieving the above object, the present invention adopts following technical scheme:
A kind of pier nose extrudes half grouting reinforcement sleeve, described sleeve is hot rolled seamless steel tube, the barrel of sleeve has injected hole and slurry outlet and the annular inwardly projecting that distributes between injected hole and slurry outlet, one end of described sleeve is pressed end, remainder is slurry anchor end, the internal diameter of described pressed end equals the external diameter of connected reinforcing bar, is less than the internal diameter of slurry anchor end, and described injected hole, slurry outlet and annular inwardly projecting are all positioned at slurry anchor end.
Described annular inwardly projecting is uniform intervals distribution or unevenly spaced distribution.
Described annular inwardly projecting is the single annular or continuous print spirality of being interrupted.
A kind ofly apply the steel bar connecting structure that described pier nose extrudes half grouting reinforcement sleeve, by sleeve, two connecting reinforcements are docked, the pressed end of described sleeve crimps with the pressed end connecting reinforcement inserting pressed end and is connected, and the part that described pressed end connecting reinforcement inserts pressed end is greater than pressed end connecting reinforcement main diameter through pier bulk processing diameter; The slurry anchor end of described sleeve with insert the slurry anchor end connecting reinforcement starching anchor end and be in the milk to build by ungauged regions high-strength cement mortar and be integrated.
A kind ofly apply the concrete component that described pier nose extrudes half grouting reinforcement sleeve, the inside of described concrete component is embedded with sleeve and pressed end connecting reinforcement, and concrete component leaves the slip casting passage of injected hole and slurry outlet and the interface channel of slurry anchor end, the pressed end of described sleeve crimps with the pressed end connecting reinforcement inserting pressed end and is connected, and the part that described pressed end connecting reinforcement inserts pressed end is greater than pressed end connecting reinforcement main diameter through pier bulk processing diameter.
As described in the syndeton of concrete component, the slurry anchor end of described concrete component inner sleeve is in the milk to build by ungauged regions high-strength cement mortar with slurry anchor end connecting reinforcement and is integrated.
As described in the construction method of concrete component syndeton, concrete steps are as follows:
Step one, cuts into sleeve Len req by hot rolled seamless steel tube according to the model specification of the diameter determination sleeve pipe hot rolled seamless steel tube used of connecting reinforcement.
Step 2, the wall of the slurry anchor end of sleeve processes annular inwardly projecting, injected hole and slurry outlet.
Step 3, inserts the pressed end of sleeve by pressed end connecting reinforcement.
Step 4, is closely crimped together by the pressed end of extrusion equipment by pressed end connecting reinforcement and sleeve.
Step 5, is cast in the pressed end of the pressed end connecting reinforcement connected and sleeve in concrete component, and on concrete component, reserves the grouting channel of injected hole and slurry outlet.
Step 6, is transported to job site by prefabricated concrete component, carries out in-site installation.
Step 7, the slurry anchor end connecting reinforcement reserved at scene inserts the slurry anchor end of sleeve.
Step 8, injects ungauged regions high-strength cement mortar by injected hole to the slurry anchor end inside of sleeve, treats that slurry outlet has slurries to emerge and namely stops slip casting.
Step 9, after the condensation of ungauged regions high-strength cement mortar reaches design strength, completes the connection construction of concrete component.
Compared with prior art the present invention has following characteristics and beneficial effect:
Instant invention overcomes traditional straight screw sleeve connection complex process, inefficient shortcoming, solve the connected mode simplifying reinforced bar sleeve, the technical problem of raising the efficiency, ensureing connection reliability.
The connection that the present invention utilizes half grouting reinforcement sleeve to carry out between reinforcing bar, the one end portion of sleeve adopts squeeze flow technique and bar connecting, another part still to adopt grouting way to continue the connection of sleeve and reinforcing bar, avoid the defect that full grouting hot rolled seamless steel tube roll extrusion sleeve dimensions is long, also have the following advantages simultaneously:
1, middle sleeve of the present invention does not need connect alignment pin, avoid the drawback that alignment pin weakens sleeve strength;
2, compared with the hot rolled seamless steel tube roll extrusion sleeve that is entirely in the milk, because sleeve has half part and pressed splice, so do not need machining screw on sleeve outer wall, rolling and processing one half-thread can be lacked, decrease workload, improve operating efficiency, also save shutoff rubber stopper simultaneously, save cost;
3, sleeve and reinforcing bar adopt squeeze flow, connected mode reliable, owing to mutually extruding between sleeve and reinforcing bar, its contact closely, in precast concrete casting process, there will not be the phenomenon of spillage in sleeve, decrease hidden danger, ensure that efficiency and quality;
4, pier bulk processing is carried out to the termination of pressed end connecting reinforcement, make it be connected with the pressed end of sleeve easier, improve bonding strength and the quality of joint.
The connected mode of sleeve of the present invention and reinforcing bar, compared with other bar connecting mode in existing concrete component, has that reliability is high, technique simple, and the feature that cost is low, its construction method is easier easy operation also, ensure that efficiency of construction and construction quality.
The present invention can be widely used in the bar connecting of the precast concrete column in how high-rise prefabricated assembled concrete frame construction, shear wall structure or frame-shear-wall structure, and the horizontal reinforcement of precast concrete beam connects and bar connecting in the bar connecting of precast concrete shear wall and existing stabilization works.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention will be further described in detail.
Fig. 1 is syndeton schematic diagram of the present invention.
Fig. 2 is the structural representation of construction method step three of the present invention.
Fig. 3 is the structural representation of construction method step four of the present invention.
Fig. 4 is the structural representation of construction method step seven of the present invention.
Fig. 5 is the structural representation of construction method step nine of the present invention.
Fig. 6 is the A-A cross-sectional view of Fig. 5.
Reference numeral: 1-sleeve, 2-annular inwardly projecting, 3-injected hole, 4-slurry outlet, 5-pressed end connecting reinforcement, 6-pressed end, 7-starch anchor end connecting reinforcement, 8-ungauged regions high-strength cement mortar, 9-slurry anchor end, 10-concrete component.
Detailed description of the invention
Embodiment is shown in Figure 3, this pier nose extrudes half grouting reinforcement sleeve, described sleeve 1 is processed by hot rolled seamless steel tube, the barrel of sleeve has injected hole 3 and slurry outlet 4, and the annular inwardly projecting 2 that distributes between injected hole 3 and slurry outlet 4, described annular inwardly projecting 2 is single annulars of uniform intervals distribution, three axle roll extrusion can be passed through, rolling or other cold and hot working processes form, one end of described sleeve 1 is pressed end 6, remainder is slurry anchor end 9, the internal diameter of described pressed end 6 equals the external diameter of connected reinforcing bar, be less than the internal diameter of slurry anchor end 9, the length of described pressed end 6 meets the equicohesive requirement of squeezed joint, the length of described slurry anchor end 9 meets the equicohesive requirement of reinforcing bar grout sleeve jointing, described injected hole 3, slurry outlet 4 and annular inwardly projecting 2 are all positioned at slurry anchor end 9, and injected hole 3 and slurry outlet 4 respectively correspondence be positioned at slurry position, anchor end 9 homonymy two.
Shown in Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, described pier nose extrudes half grouting reinforcement sleeve can realize steel reinforcement abutting joints, the pressed end 6 of described sleeve 1 is processed to form squeeze flow node with the pressed end connecting reinforcement 5 inserting pressed end by cold-extrusion technology, the part that described pressed end connecting reinforcement 5 inserts pressed end 6 is greater than pressed end connecting reinforcement main diameter through pier bulk processing diameter, and thick this part of pier is pier nose; The slurry anchor end 9 of described sleeve 1 with insert the slurry anchor end connecting reinforcement 7 starching anchor end and be in the milk to build by ungauged regions high-strength cement mortar 8 and be integrated.
Shown in Figure 1, described pier nose extrudes the connection that half grouting reinforcement sleeve can also realize concrete component, the pressed end 6 of described sleeve 1 is processed to form squeeze flow node with the pressed end connecting reinforcement 5 inserting pressed end by cold-extrusion technology, and the part that pressed end connecting reinforcement 5 inserts pressed end 6 is greater than pressed end connecting reinforcement main diameter through pier bulk processing diameter, and thick this part of pier is pier nose; Sleeve 1 and pressed end connecting reinforcement 5 are cast in advance the inside of concrete component 10, and concrete component 10 leaves the slip casting passage of injected hole 3 and slurry outlet 4 and the interface channel of slurry anchor end 9, the slurry anchor end connecting reinforcement 7 reserved in slurry anchor end 9 and scene by ungauged regions high-strength cement mortar 8 is built by grouting and is integrated, and realizes the joint connection in site of concrete component.
The construction method that described concrete component connects, concrete steps are as follows:
Step one, cuts into sleeve Len req by hot rolled seamless steel tube according to the model specification of the diameter determination sleeve pipe hot rolled seamless steel tube used of connecting reinforcement.
Step 2, the wall of the slurry anchor end 9 of sleeve 1 processes annular inwardly projecting 2, injected hole 3 and slurry outlet 4.
Step 3, carries out pier bulk processing by the termination of pressed end connecting reinforcement 5, makes its diameter be greater than reinforcing bar main diameter, and pier nose thick for pier is inserted the pressed end 6 of sleeve.
Step 4, is closely crimped together by the pressed end 6 of extrusion equipment by pressed end connecting reinforcement 5 and sleeve.
Step 5, is cast in the pressed end 6 of the pressed end connecting reinforcement 5 connected and sleeve in concrete component 10, and on concrete component, reserves the grouting channel of injected hole 3 and slurry outlet 4.
Step 6, is transported to job site by prefabricated concrete component 10, carries out in-site installation.
Step 7, the slurry anchor end connecting reinforcement 7 reserved at scene inserts the slurry anchor end 9 of sleeve.
Step 8, injects ungauged regions high-strength cement mortar 8 by injected hole 3 in slurry anchor end 9 internal cavities of sleeve, treats that slurry outlet 4 has slurries to emerge and namely stops slip casting.
Step 9, after ungauged regions high-strength cement mortar 8 condensation reaches design strength, completes the connection construction of concrete component.
After concrete component connection construction completes, subsequent construction can be carried out according to concrete agent structure, the building of such as concrete floor, concrete beam the construction such as to build, its construction method is consistent with existing construction method.
Claims (7)
1. a pier nose extrudes half grouting reinforcement sleeve, described sleeve (1) is hot rolled seamless steel tube, the barrel of sleeve has injected hole (3) and slurry outlet (4), and the annular inwardly projecting (2) that distributes between injected hole (3) and slurry outlet (4), it is characterized in that: one end of described sleeve (1) is pressed end (6), remainder is slurry anchor end (9), the internal diameter of described pressed end (6) equals the external diameter of connected reinforcing bar, be less than the internal diameter of slurry anchor end (9), described injected hole (3), slurry outlet (4) and annular inwardly projecting (2) are all positioned at slurry anchor end (9).
2. pier nose according to claim 1 extrudes half grouting reinforcement sleeve connection structure, it is characterized in that: described annular inwardly projecting (2) is uniform intervals distribution or unevenly spaced distribution.
3. pier nose according to claim 1 extrudes half grouting reinforcement sleeve connection structure, it is characterized in that: described annular inwardly projecting (2) is the single annular or continuous print spirality of being interrupted.
4. an application rights requires that the pier nose described in 1 to 3 any one extrudes the steel bar connecting structure of half grouting reinforcement sleeve, by sleeve (1), two connecting reinforcements are docked, it is characterized in that: the pressed end (6) of described sleeve (1) crimps with the pressed end connecting reinforcement (5) inserting pressed end and is connected, and the part that described pressed end connecting reinforcement (5) inserts pressed end (6) is greater than pressed end connecting reinforcement main diameter through pier bulk processing diameter; The slurry anchor end (9) of described sleeve (1) with insert slurry anchor end connecting reinforcement (7) starching anchor end and be in the milk to build by ungauged regions high-strength cement mortar (8) and be integrated.
5. an application rights requires that the pier nose described in 1 to 3 any one extrudes the concrete component of half grouting reinforcement sleeve, it is characterized in that: the inside of described concrete component (10) is embedded with sleeve (1) and pressed end connecting reinforcement (5), and concrete component leaves the slip casting passage of injected hole (3) and slurry outlet (4) and the interface channel of slurry anchor end (9), the pressed end (6) of described sleeve (1) crimps with the pressed end connecting reinforcement (5) inserting pressed end and is connected, the part that described pressed end connecting reinforcement (5) inserts pressed end (6) is greater than pressed end connecting reinforcement main diameter through pier bulk processing diameter.
6. a syndeton for concrete component as claimed in claim 5, is characterized in that: the slurry anchor end (9) of described concrete component (10) inner sleeve is in the milk to build by ungauged regions high-strength cement mortar (8) with slurry anchor end connecting reinforcement (7) and is integrated.
7. a construction method for concrete component syndeton as claimed in claim 6, it is characterized in that, concrete steps are as follows:
Step one, cuts into sleeve Len req by hot rolled seamless steel tube according to the model specification of the diameter determination sleeve pipe hot rolled seamless steel tube used of connecting reinforcement;
Step 2, the wall of the slurry anchor end (9) of sleeve (1) is processed annular inwardly projecting (2), injected hole (3) and slurry outlet (4);
Step 3, inserts the pressed end (6) of sleeve by pressed end connecting reinforcement (5);
Step 4, is closely crimped together by the pressed end (6) of extrusion equipment by pressed end connecting reinforcement (5) and sleeve;
Step 5, is cast in the pressed end (6) of the pressed end connecting reinforcement (5) connected and sleeve in concrete component (10), and on concrete component, reserves the grouting channel of injected hole (3) and slurry outlet (4);
Step 6, is transported to job site by prefabricated concrete component (10), carries out in-site installation;
Step 7, inserts the slurry anchor end (9) of sleeve by slurry anchor end connecting reinforcement (7) reserved for scene;
Step 8, injects ungauged regions high-strength cement mortar (8) by injected hole (3) to slurry anchor end (9) inside of sleeve, treats that slurry outlet (4) has slurries to emerge and namely stops slip casting;
Step 9, after ungauged regions high-strength cement mortar (8) condensation reaches design strength, completes the connection construction of concrete component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410812670.3A CN104563396A (en) | 2014-12-24 | 2014-12-24 | Pier-extruded and half-grouted steel bar sleeve, connecting structure and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410812670.3A CN104563396A (en) | 2014-12-24 | 2014-12-24 | Pier-extruded and half-grouted steel bar sleeve, connecting structure and construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104563396A true CN104563396A (en) | 2015-04-29 |
Family
ID=53080399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410812670.3A Pending CN104563396A (en) | 2014-12-24 | 2014-12-24 | Pier-extruded and half-grouted steel bar sleeve, connecting structure and construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104563396A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105064619A (en) * | 2015-08-02 | 2015-11-18 | 长安大学 | Rebar sleeve grouting connection member for prefabricated assembled type concrete component and connection method |
| CN105133795A (en) * | 2015-05-28 | 2015-12-09 | 山东万斯达建筑科技股份有限公司 | Variable-diameter half grouting sleeve and construction method thereof |
| CN105888276A (en) * | 2016-03-30 | 2016-08-24 | 全学友 | Anchor assembly, an anchoring structure and construction process thereof |
| CN108589915A (en) * | 2018-05-07 | 2018-09-28 | 东北林业大学 | A kind of external steel plate of assembly concrete column is to drawing connecting node and its construction method |
| CN110593303A (en) * | 2019-09-30 | 2019-12-20 | 吉林省热力工程设计研究有限责任公司 | Heat distribution pipeline prefabricated reinforced concrete fixed buttress and construction method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001073453A (en) * | 1999-09-06 | 2001-03-21 | Okabe Co Ltd | Building construction method |
| CN202176063U (en) * | 2011-06-17 | 2012-03-28 | 中冶建筑研究总院有限公司 | Cement grout rebar connecting joint |
| CN202208996U (en) * | 2011-01-14 | 2012-05-02 | 中冶建筑研究总院有限公司 | Cement grout steel bar connector |
| CN103452246A (en) * | 2013-07-09 | 2013-12-18 | 东南大学 | Grouted deformed steel tube sleeve abutted and connected by steel bar grouting anchor |
| CN203701435U (en) * | 2013-12-27 | 2014-07-09 | 杭州力程建筑五金有限公司 | Composite connection joint for grouting connection and compression connection |
| CN204531187U (en) * | 2014-12-24 | 2015-08-05 | 中国建筑股份有限公司 | A kind of pier nose extrudes half grouting reinforcement sleeve, its syndeton, applies the concrete component of this sleeve and the syndeton of concrete component |
-
2014
- 2014-12-24 CN CN201410812670.3A patent/CN104563396A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001073453A (en) * | 1999-09-06 | 2001-03-21 | Okabe Co Ltd | Building construction method |
| CN202208996U (en) * | 2011-01-14 | 2012-05-02 | 中冶建筑研究总院有限公司 | Cement grout steel bar connector |
| CN202176063U (en) * | 2011-06-17 | 2012-03-28 | 中冶建筑研究总院有限公司 | Cement grout rebar connecting joint |
| CN103452246A (en) * | 2013-07-09 | 2013-12-18 | 东南大学 | Grouted deformed steel tube sleeve abutted and connected by steel bar grouting anchor |
| CN203701435U (en) * | 2013-12-27 | 2014-07-09 | 杭州力程建筑五金有限公司 | Composite connection joint for grouting connection and compression connection |
| CN204531187U (en) * | 2014-12-24 | 2015-08-05 | 中国建筑股份有限公司 | A kind of pier nose extrudes half grouting reinforcement sleeve, its syndeton, applies the concrete component of this sleeve and the syndeton of concrete component |
Non-Patent Citations (2)
| Title |
|---|
| 唐先习等: "《桥梁施工》", 31 July 2014 * |
| 高忠民: "《建筑施工企业机械员读本》", 31 January 2014 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105133795A (en) * | 2015-05-28 | 2015-12-09 | 山东万斯达建筑科技股份有限公司 | Variable-diameter half grouting sleeve and construction method thereof |
| CN105064619A (en) * | 2015-08-02 | 2015-11-18 | 长安大学 | Rebar sleeve grouting connection member for prefabricated assembled type concrete component and connection method |
| CN105888276A (en) * | 2016-03-30 | 2016-08-24 | 全学友 | Anchor assembly, an anchoring structure and construction process thereof |
| CN105888276B (en) * | 2016-03-30 | 2018-07-27 | 全学友 | Anchorage component, anchor structure and its construction technology |
| CN108589915A (en) * | 2018-05-07 | 2018-09-28 | 东北林业大学 | A kind of external steel plate of assembly concrete column is to drawing connecting node and its construction method |
| CN110593303A (en) * | 2019-09-30 | 2019-12-20 | 吉林省热力工程设计研究有限责任公司 | Heat distribution pipeline prefabricated reinforced concrete fixed buttress and construction method |
| CN110593303B (en) * | 2019-09-30 | 2024-04-12 | 吉林省热力工程设计研究有限责任公司 | Prefabricated reinforced concrete fixed buttress for thermal pipeline and construction method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104563397A (en) | Extrusion semi-grouting reinforcement sleeve, connecting structure and construction method thereof | |
| CN204475676U (en) | A kind of extruding half grouting reinforcement sleeve, its syndeton, apply the concrete component of this sleeve and the syndeton of concrete component | |
| CN105178516A (en) | Extruded semi-grouting reinforced sleeve with built-in casing, connective structure, and construction method | |
| CN104563396A (en) | Pier-extruded and half-grouted steel bar sleeve, connecting structure and construction method | |
| CN202391019U (en) | End part thickened grouting connector of steel bar | |
| CN201660972U (en) | Novel cement grouting reinforcement connecting joint | |
| CN103758291B (en) | A kind of shearing enhancement mode half grout sleeve | |
| CN102116075B (en) | Novel joint prepared from cement grout and steel bars | |
| CN103899043B (en) | Embedded pyramidal half grout sleeve | |
| CN105064619A (en) | Rebar sleeve grouting connection member for prefabricated assembled type concrete component and connection method | |
| CN103899044B (en) | Embedded pyramidal full grout sleeve | |
| CN103216044A (en) | Moisture permeation and water proofing Cement grouting steel bar connecting structure of precast concrete unit | |
| CN204370701U (en) | For the steel concrete supporting device in assembly concrete building structure | |
| CN104963461A (en) | Connection method of steel bars between prefabricated parts by adopting steel fiber mortar grouting sleeve | |
| CN105064625A (en) | Grout sleeve for reinforcement connection and reinforcement connecting method | |
| CN204826423U (en) | Prefabricated assembled is reinforcing bar sleeve grout connecting piece for concrete member | |
| CN204531187U (en) | A kind of pier nose extrudes half grouting reinforcement sleeve, its syndeton, applies the concrete component of this sleeve and the syndeton of concrete component | |
| WO2021103639A1 (en) | Grouting sleeve with protrusions distributed in multi-point manner on inner cavity, and manufacturing method | |
| CN205558051U (en) | In -band inlays sheathed tube and pushes reinforcing bar sleeve that partly is in milk and connection structure thereof | |
| CN104060714A (en) | Construction method for seamless building sandwich composite wall body | |
| CN204781443U (en) | Device for connecting precast shear wall concatenation about being used for | |
| CN105133795A (en) | Variable-diameter half grouting sleeve and construction method thereof | |
| CN214006269U (en) | Steel bar connection grouting sleeve, steel bar prefabricated part and steel bar prefabricated structure | |
| CN105133789A (en) | Inner truss type steel pipe concrete T-shaped column and construction method thereof | |
| CN109056504B (en) | Lining pipe for low-hydration-heat prefabrication of bridge precast beam and prefabricating method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150429 |
|
| RJ01 | Rejection of invention patent application after publication |