CN204225366U - Precast unit, the assembling concrete component of nut break adrift grouting reducing sleeve connection - Google Patents
Precast unit, the assembling concrete component of nut break adrift grouting reducing sleeve connection Download PDFInfo
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- CN204225366U CN204225366U CN201420525356.2U CN201420525356U CN204225366U CN 204225366 U CN204225366 U CN 204225366U CN 201420525356 U CN201420525356 U CN 201420525356U CN 204225366 U CN204225366 U CN 204225366U
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- sleeve
- nut
- reinforcing bar
- concrete component
- precast unit
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Abstract
Precast unit, the assembling concrete component of nut break adrift grouting reducing sleeve connection, belong to construction work assembling concrete structure technique field.The utility model have employed the method that nut break adrift grout sleeve connects, reinforcing bar two ends install nut (5) and nut (6) respectively, branch sleeve (7) one end adopts the sleeve diameter less than nut (6) external diameter of respective end, the branch sleeve other end adopts the stifled ring (10) that internal diameter is less than nut (5) external diameter of respective end, be in the milk by sleeve, make reinforcing bar utilize the break adrift between nut, sleeve and grouting material to extrude and bonding power transmission, change the mode of reinforcing bar pulling force mainly through the power transmission that bonds of the prefabricated units that former grouting connects.Novel precast unit described in this method be connected to safety and economy aspect all increases.
Description
Technical field
The utility model relates to a kind of bar connecting structure being applied to assembled type concrete prefabricated part, screw thread is processed at reinforcing bar two ends, cover upper cap nut, sleeve one end adopts the sleeve diameter less than the nut external diameter of respective end, this nut is pinned, the sleeve other end adopts the stifled ring that internal diameter is less than the nut external diameter of respective end, this nut is pinned, be in the milk by sleeve, make reinforcing bar utilize nut, stifled break adrift extruding between ring, grouting material and sleeve and bonding power transmission, change the mode of reinforcing bar pulling force mainly through the power transmission that bonds of the prefabricated units that former grouting connects.Adopt cast-in-place band that prefabricated units are connected, thus make this novel precast unit be connected to safety and economy aspect increases, belong to construction work assembling concrete structure technique field.
Background technology
At present, the connection of precast unit mainly adopts sleeve, bellows to be connected with reserving hole grouting.These connected modes are all that the reinforcing bar that will connect pulls open a segment distance or overlap joint, then in hole, pour into high-strength grout; After sclerosis, reinforcing bar forms Unified Global together with the concrete strong bonded outside sleeve, bellows or hole.The pulling force of connecting reinforcement, then to be gone on grouting material and surrounding sleeve, bellows or concrete interface by Shear transfer to grouting material by Shear transfer, mainly relies on bonding power transmission, and reliability is not high; Because the pulling force of reinforcing bar mainly relies on bonding power transmission, the length of sleeve, bellows or hole and diameter all can be larger, and cause steel using amount very large, cost is high; Because the volume ratio of sleeve, bellows or hole is comparatively large, the special grouting material consumption therefore adopted is also comparatively large, and its durability is not fully verified, does not live through the test of the earthquake of actual generation; Space usually reserved between the prefabricated units of vertical connection is less, and there is the problem that grouting can not be full of space, cause bonding surface easy cracking destruction under horizontal loads, building continuous collapse can occur, and can cause serious life and property loss.
Utility model content
The purpose of this utility model is to provide one precast unit method of attachment very reliably, makes prefabricated units connect safety and economy and convenient construction more.
The technical solution adopted in the utility model is as follows:
For the precast unit of nut break adrift grouting reducing sleeve connection, described precast unit side comprises the longitudinal reinforcement of band nut and the sleeve of attachment connection; Precast unit opposite side comprises the longitudinal reinforcement of band nut and stifled ring.
The assembling concrete component that described precast unit is formed, it is made up of described precast unit; Two precast units connect in work progress, and the reinforcing bar namely on a precast unit is connected with the sleeve on another precast unit by the stifled ring that it connects; The side of sleeve is provided with injected hole; Be cast-in-place band between two precast units, sleeve completes connection at cast-in-place band place.
Described sleeve vertically internal diameter has difference, and one end internal diameter being connected with stifled ring is comparatively large, and the internal diameter of the other end is less, is provided with changeover portion in centre; The hole of one end that sleeve diameter is larger is screwed hole; When described assembling concrete component for described cartridges sides when vertically connecting has an injected hole; When described assembling concrete component is level connection joint, cartridges sides is provided with an injected hole, a slurry outlet.
When stifled ring arranged outside has an assembling and the external screw thread that overlaps of the corresponding threaded holes of the sleeve connection of another prefabricated units end, stifled ring is connected by screw thread with sleeve.
In described precast unit, the sleeve changeover portion of nut shape size and attachment on it that described attachment is connected with sleeve side reinforcing bar matches, namely head diameter is greater than the internal diameter with the end of the sleeve of its connection side, namely nut can be blocked by sleeve, even if when not being in the milk, pulling force still can pass through reinforcing bar nut and sleeve transmission.
The head diameter that described prefabricated units do not adhere to the longitudinal reinforcement connecting sleeved side is greater than stifled ring internal diameter and is less than the internal diameter of the sleeve be connected with this side reinforcing bar, namely the nut ring that can be blocked blocks, even if when not being in the milk, pulling force still can by the pressure transmission between reinforcing bar nut and stifled ring.
Described assembling concrete component when vertically connecting, when the sleeve side connecting stifled ring is in upper end, the shutoff pad of sealing when the opening part that sleeve is positioned at lower end is provided with for being in the milk; When the sleeve side connecting stifled ring is in lower end, the shutoff pad of sealing when the opening part of stifled ring lower end is provided with for being in the milk; Described assembling concrete component when level connection joint, when sleeve both ends open place is provided with for being in the milk sealing shutoff pad.
Before described precast unit arranges nut on reinforcing bar, sleeve is placed on the side of reinforcing bar, sleeve can be blocked by the nut of this side; Stifled ring is placed on not adhere to and connects sleeved side, and stifled ring can be blocked by the nut of this side, and then screwing steel bars two ends arrange nut.
When component is used for vertically connecting, in the lower end side reserved structure hole of the top precast unit of the cast-in-place band of described assembling concrete component, extends inside from component side and extend downward the bottom of place prefabricated units; When described component is used for level connection joint, without the need to arranging structure hole.
The practice of described assembling concrete component, is mainly undertaken by following three steps: a prefabricated units, and b component docks, c concreting.
When producing prefabricated units, arrange the reinforcing bar of two ends with nut, near unified for the sleeve that reinforcing bar the adheres to reinforcing bar nut pushing reinforcing bar side, the stifled ring unification that reinforcing bar adheres to is pushed near the reinforcing bar nut of opposite side; When precast unit is used for vertically connecting, be positioned at that the side of precast unit above bottom on cast-in-place band top is pre-buried to be extended inside from the side and lead to the sleeve pipe of bottom, after concreting, form structure hole.
In sleeve on the reinforcing bar that during prefabricated units docking, precast unit extends with the reinforcing bar nut of stifled ring on another precast unit, in stifled ring screw-in sleeve, be then in the milk from injected hole, complete bar connecting.
After bar connecting, between precast unit, use template shutoff; When described component vertically connects, by the structure hole concreting of prefabricated units, form cast-in-place band; When described modular level connects, above sleeve, directly namely to form the position fluid concrete of cast-in-place band.
The utility model can obtain following beneficial effect:
The utility model have employed the method that nut break adrift grout sleeve connects, namely the reinforcing bar of two end band nuts is set, the sleeve matched and stifled ring, the band nut reinforcing bar of component one end extends in the sleeve of connecting elements one end, stifled ring is screwed in the larger one end of sleeve diameter, then from injected hole grouting, bar connecting is completed.
This prefabricated units sleeve connection, reinforcing bar two ends are with nut, and side sleeve diameter is less than the nut external diameter of respective end, and the internal diameter of the stifled ring of opposite side screw-in sleeve is less than the nut external diameter of respective end.Be in the milk by sleeve, make reinforcing bar, stifled ring becomes as a whole with sleeve, because the internal diameter of stifled ring and opposite side sleeve is all less than corresponding head diameter, and the shearing ring area of reinforcing bar tension increases all greatly, and a part of reinforcement stresses can be passed to grouting material by extruding and passes to sleeve again, thus the length of sleeve can be shortened.When earthquake, even if due to construction or quality problems, after grouting material destroys, the pulling force of reinforcing bar also can by the pressure transmission of the stifled ring of reinforcing bar nut and the less socket end of internal diameter and the other end, avoid collapsing of building, save the Loss of Life and property of the people, also meet and improve engineering structures anti-seismic performance and the demand with multiple defence line.This prefabricated units sleeve connection, utilizes larger-diameter reinforcing bar nut, and when occurring to destroy, two ends nut can pin by less sleeve diameter and stifled ring, is unlikely to pull.Realize reinforcing bar pulling force by extruding and bonding power transmission, sleeve height can be reduced, namely decrease steel using amount and grouting amount, save material and cost, simultaneously can increase operating space, the sleeve reducing length is compared to the larger sleeve of original length, when making body of wall earthquake crack go out evenly, distributed areas are larger, greatly improve the anti-seismic performance of body of wall.
This prefabricated units sleeve connects when for vertically connecting, and sleeve is placed on cast-in-place band position, when stifled ring end is in upside, only establishes a grout hole, and omits conduit, can reduce processing and manufacturing cost.
This prefabricated units sleeve connection, arranges higher cast-in-place band, can effectively avoid original sleeve connection technology to cause, during earthquake, the problems such as shearing slip occur because conjunction old and new concret face is comparatively near, perfusion leakiness etc. easily forms straight joint at element joints.
Accompanying drawing explanation
Fig. 1 monolithic precast shear wall schematic diagram
Fig. 2 is the precast concrete shear wall connection diagram of nut break adrift grouting reducing sleeve connection
Fig. 3 is upper strata body of wall elevation
Fig. 4 is upper strata body of wall ground plan
Tu5Shi lower floor body of wall elevation
Tu6Shi lower floor body of wall top plane view
Fig. 7 is the detail drawing at reinforcing bar nut and sleeve A place
Fig. 8 is the detail drawing at reinforcing bar nut and stifled ring B place
Fig. 9 is the detail drawing at sleeve connection C place
Figure 10-13 is 4 kinds of sleeve distribution schematic diagrams
Figure 14 is the schematic diagram of head diameter D, and D was defined as the minimum straight length on the nut limit at screw cap hole center
The precast concrete beam of Figure 15-16 nut break adrift grouting reducing sleeve connection connects end face and side schematic view
In figure: 1-monolithic precast shear wall, 2-upper strata body of wall, 3-lower floor body of wall, 4-upper strata body of wall vertical reinforcement, 5-vertical reinforcement lower end nut, 6-vertical reinforcement upper end nut, 7-sleeve, 8-injected hole, 9-shutoff pad, 10-blocks up ring, and 11-constructs hole, the cast-in-place band of 12-, 13-lower floor body of wall vertical reinforcement, the reinforcing bar that 14-does not connect, the vertical reinforcement that 15-connects and sleeve, 16-internal thread, 17-external screw thread, 18-reinforcing bar lower end screw thread, 19-reinforcing bar threaded upper ends, 20-side precast beam, 21-opposite side precast beam.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is further described.
Embodiment 1:
The present embodiment is used for for described precast unit the precast shear wall vertically connecting and composing assembling, is described in detail.
As shown in Fig. 1 to Figure 14, the assembling concrete shear force wall of nut break adrift grouting reducing sleeve connection, it is connected and composed by nut break adrift grouting reducing sleeve at cast-in-place band by precast concrete shear wall; Prefabricated units described are herein upper strata body of wall and lower floor's body of wall.
The assembling concrete component of described nut break adrift grouting reducing sleeve connection includes upper strata body of wall vertical reinforcement 4, lower floor's body of wall vertical reinforcement 13, and upper strata body of wall vertical reinforcement 4 and lower floor's body of wall vertical reinforcement 13 are connected to each other by sleeve 7; End, sleeve 7 upper end is provided with internal thread 16, and sleeve 7 side is provided with injected hole 8; The end of upper strata body of wall vertical reinforcement 4 and lower floor's body of wall vertical reinforcement 13 is respectively arranged with vertical reinforcement lower end nut 5 and vertical reinforcement upper end nut 6; The top cover of upper strata vertical reinforcement 4 has stifled ring 10, the internal diameter of stifled ring 10 is greater than the diameter of upper strata body of wall vertical reinforcement 4, but be less than the diameter of reinforcing bar upper cap nut 5, the external diameter of stifled ring 10 is identical with the internal diameter of sleeve 7 upper end pipe, stifled ring 10 outer setting has external screw thread 17, and the external screw thread 17 that stifled ring 10 is arranged is engaged mutually with the internal thread 16 that end, sleeve 7 upper end is arranged; Sleeve 7 lower end is provided with shutoff pad 9.
The strength cement-based grouting material from the perfusion of described injected hole 8 is provided with, the upper strata body of wall vertical reinforcement 4 in grouting material branch sleeve 7 and lower floor's body of wall vertical reinforcement 13 in described sleeve 7.
In the lower end side reserved structure hole 11 of the upper strata body of wall 2 of the cast-in-place band 12 of described assembling concrete shear force wall, structure hole 11 extends inside from the side of upper strata body of wall 2 and extends downward the bottom of upper strata, place body of wall 2, for building cast-in-place band 12 between upper strata body of wall 2 and lower floor's body of wall 3.
Sleeve 7 upper end is the pipe that one section of internal diameter is larger, and lower end is the pipe that one section of internal diameter is less, and the changeover portion by reduced diameter between two pipes connects.
The end of upper strata body of wall vertical reinforcement 4 and lower floor's body of wall vertical reinforcement 13 is respectively arranged with the larger vertical reinforcement lower end nut 5 of diameter and the less vertical reinforcement upper end nut 6 of diameter, and the diameter of the vertical reinforcement lower end nut 5 that diameter is larger is greater than the diameter of the less vertical reinforcement upper end nut 6 of diameter.
Sleeve 7 lower end is the pipe that one section of internal diameter is less, and upper end is the pipe that one section of internal diameter is larger, and the changeover portion by reduced diameter between two pipes connects.
The end of upper strata body of wall vertical reinforcement 4 and lower floor's body of wall vertical reinforcement 13 is respectively arranged with diameter less vertical reinforcement upper end nut 6 and the larger vertical reinforcement lower end nut 5 of diameter, and the diameter of the vertical reinforcement lower end nut 5 that diameter is larger is greater than the diameter of the less vertical reinforcement upper end nut 6 of diameter.
The making of precast shear wall that nut break adrift grout sleeve connects, method of attachment and step are as follows:
S1, screwing steel bars and sleeve: sleeve 7 vertically internal diameter is different, one end internal diameter of beginning is comparatively large, and the internal diameter of the other end is less, is provided with changeover portion in centre; Sleeve diameter compared with small end with airtight shutoff pad 9; One end inwall that sleeve diameter is larger is processed into internal thread 16, and cartridges sides has an injected hole 8; With the external screw thread 17 matched with the bush whorl hole being connected prefabricated units end during assembling outside stifled ring 10, stifled ring is connected by screw thread with sleeve.Be enclosed within straight reinforcing bar by sleeve 7 and stifled ring 10, vertical reinforcement upper end nut 6 is installed by screw thread 19 in reinforced bar sleeve one end, and the other end installs vertical reinforcement lower end nut 5 by screw thread 18.
S2, precast wall body: arrange the vertical reinforcement (it is 4 that vertical reinforcement is arranged in upper strata body of wall period division, and being arranged in lower floor's body of wall period division is 13) with vertical reinforcement lower end nut 5 and vertical reinforcement upper end nut 6; The stifled ring 10 adhered on it is pushed bottom, and sleeve pushes top; Component, with stifled ring one end side reserved structure hole 11, extends inside from component side and passes to bottom; Reserve thickness of concrete cover in shear wall both sides by spacer, then prop up the template of concreting, concreting.
S3, levels body of wall dock: lifting upper strata body of wall 2, vertical reinforcement lower end nut 5 on bottom reinforcement bars 4 and its is stretched in the sleeve 7 of lower floor's body of wall 3, carry out firmly with bearing diagonal, the external screw thread 17 of stifled ring 10 is tightened along upper cartridge internal thread 16, be in the milk by injected hole 8, the sleeve top surface until grouting material is emerged.
S4, concreting: cast-in-place band 12 place configuration template carries out shutoff, by structure hole 11 concrete perfusion of upper strata body of wall 2, fills up cast-in-place band, reaches stripping after some strength until concrete.
The distribution reinforcement of the sleeve connection of precast concrete panel can adopt double layout, single layout, and Z-shaped layout or mixed-arrangement can see Figure 10-13.
Embodiment 2:
In the present embodiment, the precast concrete beam of nut break adrift grouting reducing sleeve connection, assembling concrete beam and the practice all with embodiment 1 in similar, can with reference to figure 1-9.Described prefabricated units are precast concrete beam: side precast beam 20 and opposite side precast beam 21, pass through sleeve connection between side precast beam 20 and opposite side precast beam 21.Difference does not all need to arrange structure hole in side precast beam 20 and opposite side precast beam 21, and during grouting, directly between side precast beam 20 and opposite side precast beam 21, perfusion forms cast-in-place band 12; Stifled ring end side is also with shutoff pad; An injected hole and a slurry outlet to be set in the upper cartridge of horizontal positioned, be in the milk from injected hole, till emerging from slurry outlet.
It is noted that above is illustrative to description of the present utility model, and nonrestrictive.For those skilled in the art, under the prerequisite not departing from the utility model principle, can also carry out some amendments, improvement and equivalence, these changes all fall within protection domain of the present utility model, such as: 1. the shape changing sleeve.2. cancel the minimum part of sleeve diameter.3. cancel changeover portion.4., when connecting, sleeve two ends are inverted, diameter smallest end and stifled ring end and on the contrary of the present utility model.5. the arrangement of branch sleeve.6. change the relative size of reinforcing bar nut shape or change two ends nut.Six examples are just enumerated above, and the actual amendment change falling into the utility model protection domain is not restricted to this, and each ingredient not clear and definite in the present embodiment all can use existing techniques in realizing.
Claims (9)
1. the precast unit of nut break adrift grouting reducing sleeve connection, is characterized in that: described precast unit side comprises the longitudinal reinforcement of band nut and the sleeve of attachment connection; Precast unit opposite side comprises the longitudinal reinforcement of band nut and stifled ring.
2., with the assembling concrete component that precast unit according to claim 1 is formed, it is characterized in that: it is made up of precast unit according to claim 1; Two precast units connect in work progress, and the reinforcing bar namely on a precast unit is connected with the sleeve on another precast unit by the stifled ring that it connects; The side of sleeve is provided with injected hole; Be cast-in-place band between two precast units, sleeve completes connection at cast-in-place band place.
3. assembling concrete component according to claim 2, is characterized in that: described sleeve vertically internal diameter has difference, and one end internal diameter being connected with stifled ring is comparatively large, and the internal diameter of the other end is less, is provided with changeover portion in centre; The hole of one end that sleeve diameter is larger is screwed hole; When described assembling concrete component for described cartridges sides when vertically connecting has an injected hole; When described assembling concrete component is level connection joint, cartridges sides is provided with an injected hole and a slurry outlet.
4. assembling concrete component according to claim 2, is characterized in that: the bush whorl hole being connected precast unit end when stifled ring arranged outside has an assembling with another connects the external screw thread matched, and stifled ring is connected by screw thread with sleeve.
5. assembling concrete component according to claim 2, it is characterized in that: in described precast unit, the sleeve changeover portion of nut shape size and attachment on it that described attachment is connected with sleeve side reinforcing bar matches, namely head diameter is greater than the internal diameter with the end of the sleeve of its connection side, namely nut can be blocked by sleeve, even if when not being in the milk, pulling force still can pass through reinforcing bar nut and sleeve transmission.
6. assembling concrete component according to claim 2, it is characterized in that: the nut maximum gauge that described precast unit does not adhere to the longitudinal reinforcement connecting sleeved side is greater than stifled ring internal diameter and is less than the internal diameter of the sleeve be connected with this side reinforcing bar, namely the nut ring that can be blocked blocks, even if when not being in the milk, pulling force still can by the pressure transmission between reinforcing bar nut and stifled ring.
7. assembling concrete component according to claim 2, it is characterized in that: described assembling concrete component is when vertically connecting, when the sleeve side connecting stifled ring is in upper end, the shutoff pad of sealing when the opening part that sleeve is positioned at lower end is provided with for being in the milk; When the sleeve side connecting stifled ring is in lower end, the shutoff pad of sealing when the opening part of stifled ring lower end is provided with for being in the milk; Described assembling concrete component when level connection joint, when sleeve both ends open place is provided with for being in the milk sealing shutoff pad.
8. assembling concrete component according to claim 2, is characterized in that: before described precast unit arranges nut on reinforcing bar, sleeve is placed on the side of reinforcing bar, sleeve can be blocked by the nut of this side; Stifled ring is placed on not adhere to and connects sleeved side, and stifled ring can be blocked by the nut of this side, and then screwing steel bars two ends arrange nut.
9. assembling concrete component according to claim 2, it is characterized in that: when component is used for vertically connecting, in the lower end side reserved structure hole of the top precast unit of the cast-in-place band of described assembling concrete component, extend inside from component side and extend downward the bottom of place precast unit; When described component is used for level connection joint, without the need to arranging structure hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420525356.2U CN204225366U (en) | 2014-09-12 | 2014-09-12 | Precast unit, the assembling concrete component of nut break adrift grouting reducing sleeve connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420525356.2U CN204225366U (en) | 2014-09-12 | 2014-09-12 | Precast unit, the assembling concrete component of nut break adrift grouting reducing sleeve connection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204225366U true CN204225366U (en) | 2015-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420525356.2U Expired - Fee Related CN204225366U (en) | 2014-09-12 | 2014-09-12 | Precast unit, the assembling concrete component of nut break adrift grouting reducing sleeve connection |
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|---|---|
| CN (1) | CN204225366U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104264908A (en) * | 2014-09-12 | 2015-01-07 | 中国中建设计集团有限公司 | Precast concrete members connected by locking and anchoring nuts and grouting variable diameter sleeve, prefabricated concrete member and manufacturing method of prefabricated concrete member |
-
2014
- 2014-09-12 CN CN201420525356.2U patent/CN204225366U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104264908A (en) * | 2014-09-12 | 2015-01-07 | 中国中建设计集团有限公司 | Precast concrete members connected by locking and anchoring nuts and grouting variable diameter sleeve, prefabricated concrete member and manufacturing method of prefabricated concrete member |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150325 Termination date: 20170912 |