CN103075013B - Building construction steel bar connection structure and connection method - Google Patents
Building construction steel bar connection structure and connection method Download PDFInfo
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- CN103075013B CN103075013B CN201310026636.9A CN201310026636A CN103075013B CN 103075013 B CN103075013 B CN 103075013B CN 201310026636 A CN201310026636 A CN 201310026636A CN 103075013 B CN103075013 B CN 103075013B
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Abstract
The invention discloses a building construction steel bar connection structure and a connection method, and particularly discloses a plug-in type preformed hole grouting steel bar concentric restraining anchoring lap connection method. The structure comprises a prefabricated concrete shear wall component; a longitudinal steel bar is pre-cast in the component; a preformed hole is formed beside the bottom of the longitudinal steel bar; a grouting hole and a grout outlet hole which are communicated with a wall surface are formed above and below the preformed hole; and strengthening ribs are formed on peripheries of the hole and the longitudinal steel bar. The structure is used for the connection of longitudinal steel bars among prefabricated concrete structural components, and solves the problem that the existing connection construction of steel bars in building industry is complex.
Description
Technical field
The present invention relates to a kind of building operations steel bar connecting structure and method of attachment, be specifically related to a kind of be suitable for housing industrialization, the method for attachment of prefabricated concrete structure member longitudinal reinforcement and a kind of plug-in type preformed hole grouting reinforcing bar retrain anchoring overlap joint syndeton with one heart.
Background technology
In cast-in-place concrete structure, the connection of reinforcing bar adopts overlap joint to connect more, be welded to connect or the mechanical joining methods such as compression sleeve, wherein the overlap joint of reinforcing bar connects the simplest, the construction that be welded to connect or compression sleeve etc. is mechanically connected is comparatively complicated, but these traditional constructions must complete the connection of reinforcing bar before fluid concrete, be not suitable for the fabricated construction engineering method of precast concrete.
Summary of the invention
The object of this invention is to provide a kind of building operations steel bar connecting structure and method of attachment, utilize the reserving hole on precast unit embedded bar side to realize the connection between longitudinal reinforcement, simple to operate, dependable performance.
Above-mentioned object is realized by following technical scheme:
A kind of building operations connecting method for reinforcing bars, the method adopts the mode of anchoring overlap joint after fluid concrete, realize the connection of reinforcing bar, comprises following several step:
A () nuzzles in advance when precast concrete shear wall the first longitudinal reinforcement and the second longitudinal reinforcement;
B () arranges some holes on precast concrete shear wall component, the first longitudinal hole is formed with reservation mode, wherein the first longitudinal hole is positioned near bottom the first longitudinal reinforcement, is substantially arranged in parallel with the first longitudinal reinforcement, and the second longitudinal reinforcement is inserted in the first longitudinal hole;
C () forms the contraction gap perpendicular with the first longitudinal hole with reservation mode, close the surrounding of shrinking gap by cement mortar;
D () arranges reinforcing rib at the first longitudinal hole and the first longitudinal reinforcement and the second longitudinal reinforcement periphery;
What e () adopted Churn drill to carry out first transverse holes with pulp effect gets through operation, and described first transverse holes and the first longitudinal hole intercommunication, be positioned at the apical position of the first longitudinal hole
What f () adopted Churn drill to carry out second transverse holes with grouting effect gets through operation, described second transverse holes and the first longitudinal hole intercommunication, near the bottom being positioned at the first longitudinal hole;
G () adds filling grouting material by the second transverse holes in the first longitudinal hole, in the first longitudinal hole, slurry reaches closely knit when flowing out grouting material degree from the first transverse holes, and shutoff first transverse holes, completes connection by grouting material setting and harden.
Preferably, in described step (b), the second described longitudinal reinforcement inserts in the first longitudinal hole indirectly to overlap with the first longitudinal reinforcement anchoring and is connected; The first described longitudinal reinforcement bottom bending or coaxial 3rd longitudinal reinforcement at inflection point place connection certain length, make component first longitudinal reinforcement and the second longitudinal reinforcement axially with one heart.
Preferably, the inwall of the first described longitudinal hole is zigzag, corrugated, shape of threads, and its inwall hole forming method is the built-in fitting placing given shape face in component, before treating concrete final set, is extracted out by built-in fitting; Or the straight steel pipe that placement surface is smooth, at steel tube surface brushing retarding agent, after steel pipe is extracted inside water brush hole wall.
Preferably, described reinforcing rib is helical form or ring-type, and reinforcing bar bending part is strengthened by described reinforcing rib simultaneously, and its external diameter is greater than total external diameter of the first longitudinal reinforcement, the second longitudinal reinforcement and the first longitudinal hole.
Present invention also offers a kind of building operations steel bar connecting structure, it comprises above-mentioned building operations connecting method for reinforcing bars, and described structure comprises: first longitudinal reinforcement of nuzzling in advance when precast concrete shear wall, the second longitudinal reinforcement; Precast concrete shear wall component forms the first longitudinal hole and the contraction gap perpendicular with the first longitudinal hole with reservation mode; Reinforcing rib; First transverse holes and the second transverse holes; Wherein the first longitudinal hole is positioned near bottom the first longitudinal reinforcement, is substantially arranged in parallel with the first longitudinal reinforcement, and the second longitudinal reinforcement is inserted in the first longitudinal hole, arranges reinforcing rib at the first longitudinal hole and the first longitudinal reinforcement and the second longitudinal reinforcement periphery.
Further, the second described longitudinal reinforcement inserts in the first longitudinal hole indirectly to overlap with the first longitudinal reinforcement anchoring and is connected; The first described longitudinal reinforcement bottom bending or coaxial 3rd longitudinal reinforcement at inflection point place connection certain length, make component first longitudinal reinforcement and the second longitudinal reinforcement axially with one heart.
Further, the inwall of the first described longitudinal hole is zigzag, corrugated, shape of threads, and its inwall hole forming method is the built-in fitting placing given shape face in component, before treating concrete final set, is extracted out by built-in fitting; Or the straight steel pipe that placement surface is smooth, at steel tube surface brushing retarding agent, after steel pipe is extracted inside water brush hole wall.
Further, described reinforcing rib is helical form or ring-type, and reinforcing bar bending part is strengthened by described reinforcing rib simultaneously, and its external diameter is greater than total external diameter of the first longitudinal reinforcement, the second longitudinal reinforcement and the first longitudinal hole.
Beneficial effect of the present invention is as follows:
1. the bar connecting that realizes of the present invention is simple to operate, and work progress does not need complicated plant equipment and facility, does not need power consumption yet.The pre-buried reinforcing rib of the non-smooth-shaped of reserving hole inwall, hole and embedded bar periphery can strengthen connection effect further, and therefore switching performance is reliable, is suitable for again the construction feature of housing industrialization precast concrete.Construction quality of the present invention is easy to ensure, job site is dry operation substantially, substantially avoid all disadvantages of traditional reinforcing bar connected mode.
2. building course environmental protection and energy saving, reduce costs, save construction fund.
3. bending place connect axially with one heart reinforcing bar time, connecting reinforcement achieves the Stress transmit between reinforcing bar, makes junction structure more reliable.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the horizontal sectional drawing of accompanying drawing 1.
Fig. 3 is the structural representation that the present invention connects coaxial reinforcing bar.
Wherein: 1 precast concrete shear wall component, 2 first longitudinal reinforcements, 3 first longitudinal holes, 4 second transverse holes, 5 first transverse holes, 6 reinforcing ribs, 7 shrink gap, 8 cement mortar, 9 axial 3rd longitudinal reinforcements.
Detailed description of the invention
Below in conjunction with drawings and Examples, principle of the present invention and advantage are further elaborated.
Embodiment 1
A kind of building operations connecting method for reinforcing bars, the method adopts the mode of anchoring overlap joint after fluid concrete, realize the connection of reinforcing bar, comprises following several step:
A () nuzzles in advance when precast concrete shear wall the first longitudinal reinforcement and the second longitudinal reinforcement;
B () arranges some holes on precast concrete shear wall component, the first longitudinal hole is formed with reservation mode, wherein the first longitudinal hole is positioned near bottom the first longitudinal reinforcement, is substantially arranged in parallel with the first longitudinal reinforcement, and the second longitudinal reinforcement is inserted in the first longitudinal hole;
C () forms the contraction gap perpendicular with the first longitudinal hole with reservation mode, close the surrounding of shrinking gap by cement mortar;
D () arranges reinforcing rib at the first longitudinal hole and the first longitudinal reinforcement and the second longitudinal reinforcement periphery;
What e () adopted Churn drill to carry out first transverse holes with pulp effect gets through operation, and described first transverse holes and the first longitudinal hole intercommunication, be positioned at the apical position of the first longitudinal hole
What f () adopted Churn drill to carry out second transverse holes with grouting effect gets through operation, described second transverse holes and the first longitudinal hole intercommunication, near the bottom being positioned at the first longitudinal hole;
G () adds filling grouting material by the second transverse holes in the first longitudinal hole, in the first longitudinal hole, slurry reaches closely knit when flowing out grouting material degree from the first transverse holes, and shutoff first transverse holes, completes connection by grouting material setting and harden.
Embodiment 2
In another embodiment, other parts are all identical with embodiment 1, and difference is, in described step (b), the second described longitudinal reinforcement inserts in the first longitudinal hole indirectly to overlap with the first longitudinal reinforcement anchoring and is connected; The first described longitudinal reinforcement bottom bending or coaxial 3rd longitudinal reinforcement at inflection point place connection certain length, make component first longitudinal reinforcement and the second longitudinal reinforcement axially with one heart.
Embodiment 3
In another embodiment, other parts are all identical with embodiment 1, difference is, the inwall of the first described longitudinal hole is zigzag, corrugated, shape of threads, its inwall hole forming method is the built-in fitting placing given shape face in component, before treating concrete final set, built-in fitting is extracted out; Or the straight steel pipe that placement surface is smooth, at steel tube surface brushing retarding agent, after steel pipe is extracted inside water brush hole wall.
Embodiment 4
In another embodiment, other parts are all identical with embodiment 1, and difference is, described reinforcing rib is helical form or ring-type, reinforcing bar bending part is strengthened by described reinforcing rib simultaneously, and its external diameter is greater than total external diameter of the first longitudinal reinforcement, the second longitudinal reinforcement and the first longitudinal hole.
Embodiment 5
Present invention also offers a kind of building operations steel bar connecting structure, it comprises above-mentioned building operations connecting method for reinforcing bars, and described structure comprises: first longitudinal reinforcement of nuzzling in advance when precast concrete shear wall, the second longitudinal reinforcement; Precast concrete shear wall component forms the first longitudinal hole and the contraction gap perpendicular with the first longitudinal hole with reservation mode; Reinforcing rib; First transverse holes and the second transverse holes; Wherein the first longitudinal hole is positioned near bottom the first longitudinal reinforcement, is substantially arranged in parallel with the first longitudinal reinforcement, and the second longitudinal reinforcement is inserted in the first longitudinal hole, arranges reinforcing rib at the first longitudinal hole and the first longitudinal reinforcement and the second longitudinal reinforcement periphery.
Embodiment 6
In another one embodiment of the present invention, other parts are all identical with embodiment 5, and difference is, the second described longitudinal reinforcement inserts in the first longitudinal hole indirectly to overlap with the first longitudinal reinforcement anchoring and is connected; The first described longitudinal reinforcement bottom bending or coaxial 3rd longitudinal reinforcement at inflection point place connection certain length, make component first longitudinal reinforcement and the second longitudinal reinforcement axially with one heart.
Embodiment 7
In another one embodiment of the present invention, other parts are all identical with embodiment 5, difference is, the inwall of the first described longitudinal hole is zigzag, corrugated, shape of threads, its inwall hole forming method is the built-in fitting placing given shape face in component, before treating concrete final set, built-in fitting is extracted out; Or the straight steel pipe that placement surface is smooth, at steel tube surface brushing retarding agent, after steel pipe is extracted inside water brush hole wall.
Embodiment 8
In another one embodiment of the present invention, other parts are all identical with embodiment 5, difference is, described reinforcing rib is helical form or ring-type, reinforcing bar bending part is strengthened by described reinforcing rib simultaneously, and its external diameter is greater than total external diameter of the first longitudinal reinforcement, the second longitudinal reinforcement and the first longitudinal hole.
Beneficial effect:
1. the bar connecting that realizes of the present invention is simple to operate, and work progress does not need complicated plant equipment and facility, does not need power consumption yet.The pre-buried reinforcing rib of the non-smooth-shaped of reserving hole inwall, hole and embedded bar periphery can strengthen connection effect further, and therefore switching performance is reliable, is suitable for again the construction feature of housing industrialization precast concrete.Construction quality of the present invention is easy to ensure, job site is dry operation substantially, substantially avoid all disadvantages of traditional reinforcing bar connected mode.
2. building course environmental protection and energy saving, reduce costs, save construction fund.
3. bending place connect axially with one heart reinforcing bar time, connecting reinforcement achieves the Stress transmit between reinforcing bar, makes junction structure more reliable.
It should be noted that, the preferred embodiments of the present invention, comprising inventor for implementing known optimal mode of the present invention.The change of preferred embodiment is apparent for those of ordinary skill in the art after reading the above description.Inventor wishes that those of ordinary skill rationally applies such change, and inventor thinks and clearly states different application at this and also can realize the present invention.Therefore, the present invention includes all modifications and the equivalents of the purport quoted in claim, this is allow in the law be suitable for.In addition, any combination of all possible change of above-mentioned key element also comprise by the present invention, unless pointed out in addition or obvious contradiction within a context at this.
Claims (2)
1. a building operations connecting method for reinforcing bars, is characterized in that, the method adopts the mode of anchoring overlap joint after fluid concrete, realize the connection of reinforcing bar, comprising:
A () nuzzles in advance when precast concrete shear wall the first longitudinal reinforcement and the second longitudinal reinforcement;
B () arranges some holes on precast concrete shear wall component, the first longitudinal hole is formed with reservation mode, wherein the first longitudinal hole is positioned near bottom the first longitudinal reinforcement, is substantially arranged in parallel with the first longitudinal reinforcement, and the second longitudinal reinforcement is inserted in the first longitudinal hole; The second described longitudinal reinforcement inserts in the first longitudinal hole indirectly to overlap with the first longitudinal reinforcement anchoring and is connected; The first described longitudinal reinforcement bottom bending or coaxial 3rd longitudinal reinforcement at inflection point place connection certain length, make component first longitudinal reinforcement and the second longitudinal reinforcement axially with one heart;
C () forms the contraction gap perpendicular with the first longitudinal hole with reservation mode, close the surrounding of shrinking gap by cement mortar;
D () arranges reinforcing rib at the first longitudinal hole and the first longitudinal reinforcement and the second longitudinal reinforcement periphery, described reinforcing rib is helical form or ring-type, reinforcing bar bending part is strengthened by described reinforcing rib simultaneously, and its external diameter is greater than total external diameter of the first longitudinal reinforcement, the second longitudinal reinforcement and the first longitudinal hole;
What e () adopted Churn drill to carry out first transverse holes with pulp effect gets through operation, and described first transverse holes and the first longitudinal hole intercommunication, be positioned at the apical position of the first longitudinal hole
What f () adopted Churn drill to carry out second transverse holes with grouting effect gets through operation, described second transverse holes and the first longitudinal hole intercommunication, near the bottom being positioned at the first longitudinal hole;
G () adds filling grouting material by the second transverse holes in the first longitudinal hole, in the first longitudinal hole, slurry reaches closely knit when flowing out grouting material degree from the first transverse holes, shutoff first transverse holes, connection is completed by grouting material setting and harden, the inwall of the first described longitudinal hole is zigzag, corrugated, shape of threads, its inwall hole forming method is the built-in fitting placing given shape face in component, before treating concrete final set, is extracted out by built-in fitting; Or the straight steel pipe that placement surface is smooth, at steel tube surface brushing retarding agent, after steel pipe is extracted inside water brush hole wall.
2. a building operations steel bar connecting structure, it comprises building operations connecting method for reinforcing bars as claimed in claim 1, it is characterized in that, described structure comprises: first longitudinal reinforcement of nuzzling in advance when precast concrete shear wall, the second longitudinal reinforcement; Precast concrete shear wall component forms the first longitudinal hole and the contraction gap perpendicular with the first longitudinal hole with reservation mode; Reinforcing rib; First transverse holes and the second transverse holes; Wherein the first longitudinal hole is positioned near bottom the first longitudinal reinforcement, substantially be arranged in parallel with the first longitudinal reinforcement, second longitudinal reinforcement is inserted in the first longitudinal hole, arrange reinforcing rib at the first longitudinal hole and the first longitudinal reinforcement and the second longitudinal reinforcement periphery, the second described longitudinal reinforcement inserts in the first longitudinal hole indirectly to overlap with the first longitudinal reinforcement anchoring and is connected; The first described longitudinal reinforcement bottom bending or coaxial 3rd longitudinal reinforcement at inflection point place connection certain length, make component first longitudinal reinforcement and the second longitudinal reinforcement axially with one heart, the inwall of the first described longitudinal hole is zigzag, corrugated, shape of threads, its inwall hole forming method is the built-in fitting placing given shape face in component, before treating concrete final set, built-in fitting is extracted out; Or the straight steel pipe that placement surface is smooth, at steel tube surface brushing retarding agent, after steel pipe is extracted inside water brush hole wall, described reinforcing rib is helical form or ring-type, reinforcing bar bending part is strengthened by described reinforcing rib simultaneously, and its external diameter is greater than total external diameter of the first longitudinal reinforcement, the second longitudinal reinforcement and the first longitudinal hole.
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| CN201310026636.9A CN103075013B (en) | 2013-01-21 | 2013-01-21 | Building construction steel bar connection structure and connection method |
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| CN201310026636.9A CN103075013B (en) | 2013-01-21 | 2013-01-21 | Building construction steel bar connection structure and connection method |
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| CN104153461A (en) * | 2013-05-16 | 2014-11-19 | 叶新 | Precast concrete structural member and method for building construction longitudinal connection between structural members |
| CN105256922A (en) * | 2014-07-16 | 2016-01-20 | 中铁建工集团有限公司 | Mounting method of light-weight wall boards |
| CN104594640A (en) * | 2014-12-01 | 2015-05-06 | 中建七局第四建筑有限公司 | High-rise building secondary structure foam concrete cast-in-situ bar planting technology and construction method thereof |
| CN107542220B (en) * | 2016-06-24 | 2019-09-13 | 中国二十冶集团有限公司 | Large-scale variable cross-section concrete column upper layer vertical reinforcement construction method |
| CN106193329B (en) * | 2016-08-29 | 2019-03-15 | 朱凤起 | Concrete wall structure and its construction method |
| CN109281398A (en) * | 2017-07-19 | 2019-01-29 | 沈阳建筑大学 | Boundling half, which is in the milk, constrains slurry anchor connection method |
| CN109281397A (en) * | 2017-07-19 | 2019-01-29 | 沈阳建筑大学 | Boundling is in the milk entirely constrains slurry anchor connection method |
| CN109881817A (en) * | 2018-06-26 | 2019-06-14 | 清华大学 | A kind of precast concrete shear wall horizontal joint box out overlapped forming hole method |
| CN110331787A (en) * | 2019-07-09 | 2019-10-15 | 中铁十九局集团第二工程有限公司 | The construction method that part concrete is connect with beam body concrete is poured after a kind of enhancing beam body sealing end |
| CN111851304A (en) * | 2020-07-24 | 2020-10-30 | 南京林业大学 | L-shaped slot-in type connection method of prefabricated bridge pier and bearing platform |
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| JP5775369B2 (en) * | 2011-06-09 | 2015-09-09 | 株式会社ディビーエス | Reinforcing bar for reinforced concrete and method for constructing reinforcing bar |
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| CN201217847Y (en) * | 2008-06-05 | 2009-04-08 | 黑龙江宇辉新型建筑材料有限公司 | Plug-in type preformed hole grouting reinforcement lapping connection component |
Non-Patent Citations (1)
| Title |
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| 预制混凝土结构插入式预留孔灌浆钢筋锚固性能;姜洪斌等;《哈尔滨工业大学学报》;20110430;第43卷(第4期);28-31，36 * |
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Effective date of registration: 20171218 Address after: 432000 Hubei province Xiaogan city Xiaochang County Economic Development Zone Patentee after: Hubei Yuhui New Type Building Material Co., Ltd. Address before: 158100 east side of Beijing University of Li Min Development Zone, Harbin, Heilongjiang Co-patentee before: Hubei Yuhui New Type Building Material Co., Ltd. Patentee before: Heilongjiang Yuhui New Building Materials Co., Ltd. |