CN204059601U - A kind of steel bar connecting structure of prefabricated concrete element - Google Patents

A kind of steel bar connecting structure of prefabricated concrete element Download PDF

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Publication number
CN204059601U
CN204059601U CN201420570113.0U CN201420570113U CN204059601U CN 204059601 U CN204059601 U CN 204059601U CN 201420570113 U CN201420570113 U CN 201420570113U CN 204059601 U CN204059601 U CN 204059601U
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CN
China
Prior art keywords
prefabricated
type
muscle
dowel
shear wall
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Expired - Fee Related
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CN201420570113.0U
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Chinese (zh)
Inventor
伍军
吴吉祥
周新亚
董燕囡
张文禄
施大震
余辉云
程海庆
李明
马珂
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National Engineering Laboratory for High Speed Rail Construction
Central South University
China Tiesiju Civil Engineering Group Co Ltd CTCE Group
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China Tiesiju Civil Engineering Group Co Ltd CTCE Group
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Priority to CN201420570113.0U priority Critical patent/CN204059601U/en
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Publication of CN204059601U publication Critical patent/CN204059601U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a kind of steel bar connecting structure of prefabricated concrete element, it is characterized in that the dowel in the bonding pad of placement between two blocks of prefabricated components is " U " type " U " type muscle by straight muscle bending, " U " type muscle has at least one end to be embedded in prefabricated component, form " U " type dowel extending in prefabricated component end, each road " U " the type dowel interlaced arrangement of extending respectively in two blocks of prefabricated components also overlaps mutually, forming position is at same lengthwise position Shang Ge road rectangle frame, between each road rectangle frame, the position being positioned at rectangle frame four angles is connected in series with longitudinal straight muscle the form forming rectangle reinforcing cage.The utility model can be widely used in precast floor unit and precast shear wall connecting elements, and can realize substituting existing laminated floor slab with monolithic floor, and it connects reliable, globality is strong, meet requirement for bearing capacity, be conducive to reducing prefabricated units kind, be conducive to the realization of suitability for industrialized production.

Description

A kind of steel bar connecting structure of prefabricated concrete element
Technical field
The utility model relates to the steel bar connecting structure of prefabricated concrete element, is more particularly the syndeton be applied in prefabrication between prefabricated concrete element.
Background technology
At present in China's fabricated shear wall house, a kind of usual manner of connection of precast concrete shear wall member reinforcing steel bar is " plug-in type preformed hole grouting reinforcing bar connects overlap joint and connects ", it is reserved with in the lower end of precast unit embedded bar the hole that inwall is the rough surface such as corrugated or helical form, when after precast unit installation, overlap reinforcing bar to insert in hole to setting lap length simultaneously, in hole, pour into grouting material by be connected with hole grout hole and steam vent, after grouting material setting and harden, namely realize the connection of reinforcing bar.Mainly there is following problem in this bar connecting mode:
1, the accurate positioning of the on-the-spot reinforcing bar of the substantive requirements of form of its plug-in type preformed hole, deviation can not be had, otherwise reinforcing bar is difficult to accurately insert in preformed hole, but in fact, the off-position of steel reinforcing bar phenomenon of job site is commonplace, therefore before lifting implemented by prefabricated units, must manually correct, but correcting process not only increases workload, reinforcing bar may be made impaired because correcting simultaneously, and then affect reinforcement property.
2, preformed hole is an omnidistance blind bore hole, naked eyes cannot see the structure of hole inside, pouring in the whole process of grouting material in hole, cannot judge whether grouting material tightly fills with real whole hole, and this makes the connection of reinforcing bar and prefabricated units whether reliably uncontrollable, and in cast-in-place structural, concrete needs to vibrate with vibration apparatus, but in this fashion, whether process of not vibrating, more cause grouting material closely knit uncontrollable.
3, the reinforcing bar length that the connection request reinforcing bar of its vertical muscle inserts in hole will reach the degree of depth being not less than 30 times of bar diameters, and hole circumferential arrangement spiral stirrup, the configuration height of spiral stirrup is not less than tensile reinforcement lap length, and this is obviously unfavorable for the saving of reinforcing bar.
In prior art, adopt at the floor built for precast shear wall in the construction of overlaid plate type floor connected mode, laminated floor slab is the reinforced concrete floor be formed by stacking by precast floor slab and cast-in-situ steel reinforced concrete layer, and mainly there are the following problems for this form:
1, according to the regulation of related specifications, prefabricated units thickness in laminated floor slab should not be less than 50mm, cast-in-place segment thickness should not be less than 100mm, namely floor integral thickness is not less than 150mm, but the slab thickness in cast-in-place structural is generally only 100-120mm, obviously, laminated floor slab thickness comparatively cast-in-situ floor thickness adds 50%-25%, and this form considerably increases dead load.
2, pre-buried lattice type steel bar in precast floor unit, its steel bar overall consumption can greatly increase compared with common cast-in-situ floor.
3, laminated floor slab needs to carry out at the scene building of reinforcing bar binding and concrete, on-the-spotly in work progress needs a large amount of labours to operate, and this is unfavorable for improving engineering efficiency.
In sum, in prior art mainly there is following problem in the form of precast shear wall bar connecting mode and laminated floor slab:
1, " " grouting construction quality is not easily located control and reserved steel bar inaccurately affects engineering reliability to plug-in type preformed hole.
2, laminated floor slab dead load is large, and waste concrete, its prefabricated units ratio only reaches 50%, wet trade amount large percentage.
3, plug-in type preformed hole grouting reinforcing bar connects and connects with the lattice muscle connected mode of laminated floor slab that to be that two kinds of diverse connected modes are mutual do not have a versatility.
Utility model content
The utility model is the weak point for avoiding existing for above-mentioned prior art, the steel bar connecting structure of the reliable prefabricated concrete element of a kind of structural safety is provided, possess to make building structure fully meet that structural-load-carrying capacity, antidetonation globality are strong, convenient construction transport and realize the requirement of suitability for industrialized production fast, be applied in fabricated shear wall house, to reducing wet trade quantity, improve assembling ratio, simplify construction technology, reduce construction costs.
The utility model is that technical solution problem adopts following technical scheme:
The feature of the steel bar connecting structure of the utility model prefabricated concrete element is: the dowel in the bonding pad of placement between two blocks of prefabricated components is " U " type " U " type muscle by straight muscle bending, described " U " type muscle has at least one end to be embedded in prefabricated component, form " U " type dowel extending in prefabricated component end, each road " U " the type dowel interlaced arrangement of extending respectively in two blocks of prefabricated components also overlaps mutually, forming position is at same lengthwise position Shang Ge road rectangle frame, between described each road rectangle frame, the position being positioned at rectangle frame four angles is connected in series with longitudinal straight muscle the form forming rectangle reinforcing cage.
The feature of the steel bar connecting structure of the utility model prefabricated concrete element is also:
Described " U " type dowel both-end extending in prefabricated component end is all embedded in prefabricated component, forms " U " type dowel closed.
Described " U " type dowel extending in prefabricated component end is embedded in prefabricated component with single-ended, forms " U " type dowel of opening, and " U " type dowel aperture position mutually overlapped for a pair is contrary.
The feature that the steel bar connecting structure of the utility model prefabricated concrete element is applied in precast floor unit is: in bonding pad cast-in-situ concrete, complete connection after jolt ramming through maintenance, forms the monolithic floor that can substitute laminated floor slab.
The feature that the steel bar connecting structure of the utility model prefabricated concrete element is applied in precast floor unit is also:
Large Floor is divided into small size unit floor, between adjacent unit floor, forms bonding pad.
Arranging described precast floor unit towards the end face of bonding pad is male and fomale(M&F), makes to match with male and fomale(M&F) between described precast floor unit and the cast-in-situ concrete of bonding pad, increases the cast-in-situ concrete of bonding pad and the end contact area of precast floor slab part.
The feature that the steel bar connecting structure of the utility model prefabricated concrete element is applied in precast shear wall connecting elements is: comprise the vertical connecting elements of precast shear wall and precast shear wall level connection joint component, after the concreting jolt ramming of bonding pad, complete connection through maintenance.
The feature that the steel bar connecting structure of the utility model prefabricated concrete element is applied in precast shear wall connecting elements is also:
" L " shape, " C " shape or "T"-shaped shear wall are divided into " one " font prefabricated units, between described " one " font prefabricated units, form bonding pad; Or described " C " shape shear wall is divided into two panels " L " shape prefabricated units, and forming bonding pad each other; Or described "T"-shaped shear wall is divided into the "T"-shaped prefabricated units of a slice and a slice " one " font prefabricated units, and forming bonding pad each other.
Arranging described precast shear wall connecting elements towards the end face of bonding pad is male and fomale(M&F), make to match with male and fomale(M&F) between described precast shear wall connecting elements and the cast-in-situ concrete of bonding pad, increase the cast-in-situ concrete of bonding pad and the end contact area of precast shear wall connecting elements.
Compared with the prior art, the utility model beneficial effect is embodied in:
1, adopt " U " type muscle overlap joint in the utility model, and then form the form of rectangle reinforcing cage, its stabilized structure, coordinate the closely knit bonding pad that makes of concrete placings can obtain the component load-bearing ability be equal to cast in place process.
2, in the utility model, the width of bonding pad can reach 250mm, ensure that the operating space of constructor, due to the form that bonding pad is exposed, vibrator can be adopted to vibrate for building of concrete, manual observation is coordinated to carry out handle control, the construction quality of Cast-in-place concrete can be controlled well, ensure the overall performance of node bonding pad; In the utility model, " U " type muscle overlap joint can reduce the length about 20% of bar splicing flat segments.
3, the utility model is owing to obtaining the component load-bearing ability be equal to cast in place process in bonding pad, make it can apply in various assembly structure, comprise and be applied to floor prefabricated units and connect, be applied to the connection of shear wall prefabricated units, wherein the connection of shear wall prefabricated units comprises: the various forms such as the connection in the Vertical bar connection of shear wall floor gap, same floor between the connection segment of longer shear wall and corner different directions shear wall component; Effectively reduce the kind of prefabricated units, be greatly conducive to modularized design.
4, utilize the utility model connected mode can by erose shear wall, " one " font that such as " L " shape, " C " shape and "T"-shaped shear wall are divided into specification identical, produces in batches with the form of " one " word; Or " C " shape shear wall is divided into two " L " combination of shapes, and "T"-shaped shear wall is divided into the combination of segmentation journey " T " and " one " font, still according to construction demand, Large Floor can be divided into some fritters, be very easy to transport and lifting, significantly can reduce the kind that factory-made component is produced, facilitate site operation.
5, utilize the utility model syndeton can greatly improve prefabricated units ratio, significantly reduce wet trade quantity.Especially the application in floor prefabricated units, can abandon the form of laminated floor slab, changes into and adopts integral prefabricated floor, floor is achieved 100% prefabricated.This is significant for the prefabricated ratio of raising assembling system.
6, the utility model connected mode overcomes the shortcoming grown the waiting period that other connected mode construction quality being uncontrollable, node bonding pad complicated, construction cost is high, scene exists a large amount of wet trade and construct.
The connected mode 7, in the utility model with versatility reduces the difficulty that workman masters a skill, and has great help for raising work task efficiency and the qualification that develops skill.
Accompanying drawing explanation
Fig. 1 a is that the utility model is applied to precast shear wall level connection joint component decomposition sectional schematic diagram;
Fig. 1 b is that the utility model is applied to precast shear wall level connection joint component connection sectional schematic diagram;
Fig. 1 c is that the utility model is applied to precast shear wall level connection joint component exploded isometric schematic diagram;
Fig. 1 d is that the utility model is applied to precast shear wall level connection joint component connecting axle and measures intention;
Fig. 2 a is that the utility model is applied to precast shear wall vertical connecting elements decomposition sectional schematic diagram;
Fig. 2 b is that the utility model is applied to precast shear wall vertical connecting elements connection sectional schematic diagram;
Fig. 2 c is that the utility model is applied to precast shear wall vertical connecting elements exploded isometric schematic diagram;
Fig. 2 d is that the utility model is applied to the vertical connecting elements connecting axle of precast shear wall and measures intention;
Fig. 3 a is that the utility model is applied to corner precast shear wall level connection joint component decomposition sectional schematic diagram;
Fig. 3 b is that the utility model is applied to corner precast shear wall level connection joint component connection sectional schematic diagram;
Fig. 3 c is that the utility model is applied to corner precast shear wall level connection joint component exploded isometric schematic diagram;
Fig. 3 d is that the utility model is applied to corner precast shear wall level connection joint component connecting axle and measures intention;
Fig. 4 a is that the utility model is applied to precast floor unit decomposition sectional schematic diagram;
Fig. 4 b is that the utility model is applied to precast floor unit connection sectional schematic diagram;
Fig. 4 c is that the utility model is applied to precast floor unit exploded isometric schematic diagram;
Fig. 4 d is that the utility model is applied to precast floor unit connecting axle and measures intention;
Number in the figure: 11 first precast shear wall level connection joint components, 12 first level connection joint muscle, 21 second precast shear wall level connection joint components, 22 second level connection joint muscle, the vertical connecting elements of 31 first precast shear wall, 32 first vertical dowels, the vertical connecting elements of 41 second precast shear wall, 42 second vertical dowels; 51 first corner precast shear wall level connection joint components, 52 first corner level connection joint muscle, 61 second corner precast shear wall level connection joint components, 62 second corner level connection joint muscle; 71 First building plate prefabricated members, 72 first floor dowels, 81 second floor prefabricated units, 82 second floor dowels, 9 longitudinal straight muscle, 10 bonding pads;
Detailed description of the invention
The steel bar connecting structure of the utility model prefabricated concrete element is: the dowel in the bonding pad of placement between two blocks of prefabricated components is " U " type " U " type muscle by straight muscle bending, described " U " type muscle has at least one end to be embedded in prefabricated component, form " U " type dowel extending in prefabricated component end, each road " U " the type dowel interlaced arrangement of extending respectively in two blocks of prefabricated components also overlaps mutually, forming position is at same lengthwise position Shang Ge road rectangle frame, between described each road rectangle frame, the position being positioned at rectangle frame four angles is connected in series with longitudinal straight muscle the form forming rectangle reinforcing cage.
In concrete enforcement, " U " type dowel both-end extending in prefabricated component end is all embedded in prefabricated component, forms " U " type dowel closed." U " type dowel extending in prefabricated component end also can be embedded in prefabricated component with single-ended, forms " U " type dowel of opening, and " U " type dowel aperture position mutually overlapped for a pair is contrary.
Application mode:
Application mode one: in the present embodiment, the bar connecting mode of prefabricated concrete element is applied in precast floor unit, in bonding pad cast-in-situ concrete, completes connection after jolt ramming through maintenance, forms the monolithic floor that can substitute laminated floor slab.
In concrete enforcement, Large Floor can be divided into small size unit floor, between adjacent unit floor, form bonding pad; Arranging described precast floor unit towards the end face of bonding pad is male and fomale(M&F), makes to match with male and fomale(M&F) between described precast floor unit and the cast-in-situ concrete of bonding pad, increases the cast-in-situ concrete of bonding pad and the end contact area of precast floor slab part.
Application mode two: in the present embodiment, the bar connecting mode of prefabricated concrete element is applied in precast shear wall connecting elements, comprise the vertical connecting elements of precast shear wall and precast shear wall level connection joint component, after the concreting jolt ramming of bonding pad, complete connection through maintenance.
In concrete enforcement, can be that " L " shape, " C " shape or "T"-shaped shear wall are divided into " one " font prefabricated units, between described " one " font prefabricated units, form bonding pad; Or described " C " shape shear wall is divided into two panels " L " shape prefabricated units, and forming bonding pad each other; Can also be described "T"-shaped shear wall is divided into the "T"-shaped prefabricated units of a slice and a slice " one " font prefabricated units, and form bonding pad each other.
Arranging described precast shear wall connecting elements towards the end face of bonding pad is male and fomale(M&F), make to match with male and fomale(M&F) between described precast shear wall connecting elements and the cast-in-situ concrete of bonding pad, increase the cast-in-situ concrete of bonding pad and the end contact area of precast shear wall connecting elements.
The utility model can be widely used in the connection between prefabricate component, the some shear wall prefabricated units at same floor inside lock place, two blocks of floor prefabricated units etc. of longer shear wall in the upper and lower floor in floor place two blocks of shear wall prefabricated units, same floor, greatly can simplify component node and connect kind, be conducive to improving factory's streamlined work degree.
Work progress:
1, on-site hoisting two blocks of prefabricated units in place, and carry out temporary support;
2, penetrating straight muscle as connecting reinforcement to being in Zhong Ge road, bonding pad rectangle frame, fastening formation fixed structure with iron wire;
3, build bonding pad concrete, make each component be connected to form entirety in the mode of wet connection.
See Fig. 1 a, Fig. 1 b, Fig. 1 c and Fig. 1 d, level connection joint is carried out between the first precast shear wall level connection joint component 11 and the second precast shear wall level connection joint component 21, the first level connection joint muscle 12 that first precast shear wall level connection joint component 11 is arranged in bonding pad is " U " type muscle, second level connection joint muscle 22 of same is the second precast shear wall level connection joint component 21 is arranged in bonding pad is also " U " type muscle, as shown in Fig. 1 a and Fig. 1 c; In bonding pad 10, first level connection joint muscle 12 and the second level connection joint muscle 22 mutually overlap joint form rectangle frame, the position being positioned at rectangle frame four angles is connected in series with longitudinal straight muscle 9, as shown in Fig. 1 b and Fig. 1 d, after the connection of longitudinal straight muscle 9 completes, implements the concreting of bonding pad 10.
See Fig. 2 a, Fig. 2 b, Fig. 2 c and Fig. 2 d, vertically be connected between the vertical connecting elements of the first precast shear wall 31 with the vertical connecting elements 41 of the second precast shear wall, the first vertical dowel 32 that the vertical connecting elements 31 of first precast shear wall is arranged in bonding pad is " U " type muscle, second vertical dowel 42 of same the is vertical connecting elements 41 of the second precast shear wall is arranged in bonding pad is also " U " type muscle, as shown in Fig. 2 a and Fig. 2 c; In bonding pad 10, first vertical dowel 32 and the second vertical dowel 42 mutually overlap joint form rectangle frame, the position being positioned at rectangle frame four angles is connected in series with longitudinal straight muscle 9, as shown in Fig. 2 b and Fig. 2 d, after the connection of longitudinal straight muscle 9 completes, implements the concreting of bonding pad 10.
See Fig. 3 a, Fig. 3 b, Fig. 3 c and Fig. 3 d, level connection joint is carried out between the first corner precast shear wall level connection joint component 51 and the second corner precast shear wall level connection joint component 61, the first corner level connection joint muscle 52 that first corner precast shear wall level connection joint component 51 is arranged in bonding pad is " U " type muscle, second corner level connection joint muscle 62 of same is the second corner precast shear wall level connection joint component 61 is arranged in bonding pad is also " U " type muscle, as shown in Fig. 3 a and Fig. 3 c; In bonding pad 10, first corner level connection joint muscle 52 and the second corner level connection joint muscle 62 mutually overlap joint form rectangle frame, the position being positioned at rectangle frame four angles is connected in series with longitudinal straight muscle 9, as shown in Fig. 3 b and Fig. 3 d, after the connection of longitudinal straight muscle 9 completes, implement the concreting of bonding pad 10.
See Fig. 4 a, Fig. 4 b, Fig. 4 c and Fig. 4 d, be connected between First building plate prefabricated member 71 with the second floor prefabricated units 81, the first floor dowel 72 that First building plate prefabricated member 71 is arranged in bonding pad is " U " type muscle, second floor dowel 82 of same is the second floor prefabricated units 81 are arranged in bonding pad is also " U " type muscle, as shown in Fig. 4 a and Fig. 4 c; In bonding pad 10, first floor dowel 72 and the second floor dowel 82 mutually overlap joint form rectangle frame, the position being positioned at rectangle frame four angles is connected in series with longitudinal straight muscle 9, as shown in Fig. 4 b and Fig. 4 d, after the connection of longitudinal straight muscle 9 completes, implements the concreting of bonding pad 10.

Claims (3)

1. the steel bar connecting structure of a prefabricated concrete element, it is characterized in that: the dowel in the bonding pad of placement between two blocks of prefabricated components is " U " type " U " type muscle by straight muscle bending, described " U " type muscle has at least one end to be embedded in prefabricated component, form " U " type dowel extending in prefabricated component end, each road " U " the type dowel interlaced arrangement of extending respectively in two blocks of prefabricated components also overlaps mutually, forming position is at same lengthwise position Shang Ge road rectangle frame, between described each road rectangle frame, the position being positioned at rectangle frame four angles is connected in series with longitudinal straight muscle the form forming rectangle reinforcing cage.
2. the steel bar connecting structure of prefabricated concrete element according to claim 1, is characterized in that: described in extend in prefabricated component end " U " type dowel both-end be all embedded in prefabricated component, form " U " type dowel closed.
3. the steel bar connecting structure of prefabricated concrete element according to claim 1, it is characterized in that: described in extend in prefabricated component end " U " type dowel be embedded in prefabricated component with single-ended, form " U " type dowel of opening, " U " type dowel aperture position mutually overlapped for a pair is contrary.
CN201420570113.0U 2014-09-29 2014-09-29 A kind of steel bar connecting structure of prefabricated concrete element Expired - Fee Related CN204059601U (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106760114A (en) * 2017-01-18 2017-05-31 黄坤坤 Assembled ring muscle is fastened and is anchored reinforced concrete slab attachment structure
CN108385857A (en) * 2018-02-05 2018-08-10 西安建筑科技大学 A kind of precast prestressed connecting structure of wall of abnormity and assembly method
CN108396897A (en) * 2015-10-23 2018-08-14 北京建工华创科技发展股份有限公司 A kind of prefabricated modular composite floor
CN109537788A (en) * 2018-11-22 2019-03-29 中耕耘成建筑科技(江苏)有限公司 A kind of concrete folding plate with very-high performance
CN112922170A (en) * 2021-04-12 2021-06-08 珠海市世纪建设工程有限公司 Assembled concrete wall structure

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108396897A (en) * 2015-10-23 2018-08-14 北京建工华创科技发展股份有限公司 A kind of prefabricated modular composite floor
CN108396897B (en) * 2015-10-23 2019-12-06 北京建工华创科技发展股份有限公司 Prefabricated modular composite floor slab
CN106760114A (en) * 2017-01-18 2017-05-31 黄坤坤 Assembled ring muscle is fastened and is anchored reinforced concrete slab attachment structure
CN108385857A (en) * 2018-02-05 2018-08-10 西安建筑科技大学 A kind of precast prestressed connecting structure of wall of abnormity and assembly method
CN108385857B (en) * 2018-02-05 2019-07-05 西安建筑科技大学 A kind of precast prestressed connecting structure of wall of abnormity and assembly method
CN109537788A (en) * 2018-11-22 2019-03-29 中耕耘成建筑科技(江苏)有限公司 A kind of concrete folding plate with very-high performance
CN109537788B (en) * 2018-11-22 2020-09-01 中耕耘成建筑科技(江苏)有限公司 Concrete superimposed sheet with ultra-high performance
CN112922170A (en) * 2021-04-12 2021-06-08 珠海市世纪建设工程有限公司 Assembled concrete wall structure

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Inventor after: Dong Yannan

Inventor after: Zhang Wenlu

Inventor after: Shi Dazhen

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