CN205421722U - Steel - concrete structure's compound shear force connecting piece - Google Patents
Steel - concrete structure's compound shear force connecting piece Download PDFInfo
- Publication number
- CN205421722U CN205421722U CN201620129938.8U CN201620129938U CN205421722U CN 205421722 U CN205421722 U CN 205421722U CN 201620129938 U CN201620129938 U CN 201620129938U CN 205421722 U CN205421722 U CN 205421722U
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- shear connector
- steel
- reinforcing bar
- concrete structure
- connecting piece
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Abstract
The utility model discloses a steel - concrete structure's compound shear force connecting piece, the shear force connecting piece is including shear force connecting piece that adopts the curved system of reinforcing bar and the foxtail reinforcing bar that passes the shear force connecting piece. Specific preparation installation method includes: the shear force connecting piece is welded to preparation girder steel and curved system, the transportation hoist and mount of girder steel, the concrete floor template is strutted, penetrate the foxtail reinforcing bar at the shear force connecting piece to together the reinforcing bar of ligature concrete structure spare is netted, form removal after concreting and normal maintenance are accomplished. The utility model discloses a welding of shear force connecting piece and shaped steel girder steel links firmly, and the foxtail reinforcing bar that the rethread passed the shear force connecting piece forms a whole with the concrete structure spare of cast in situs, has improved the shear strength and the rigidity of steel - concrete integrated configuration greatly, has realized the in coordination atress of concrete slab with the girder steel effectively, has that simple structure, processing are simple and convenient, low price, reduce project cost, on -the -spot installation rate is fast, welding quality is a secure advantage.
Description
Technical field
This utility model belongs to civil engineering building technology field, is specifically related to the compound shear connector of a kind of steel-concrete structure.
Background technology
Steel-concrete combined structure can play steel and the respective mechanical property of concrete, reasonable stress, and bearing capacity is high, and rigidity is big, and construction speed is fast, and comprehensive economy is good, and bridge construction, industry at home and abroad have obtained acting on the most widely in civil buildings.Wherein, shear connector is one of critical component in steel-concrete combined structure, and its effect is to prevent the mutual sliding of both interfaces level and separation, makes in combinative structure to constitute between steel beam column and concrete component an entirety and cooperation.
Shear connector form in steel-concrete combined structure is applied to have a variety of, the most conventional technological means mainly has shearing peg, PBL connector (i.e. open pore steel plate connector), shaped steel shear connector and bendbor connectors etc., in these a few class shear connectors, it is respectively provided with certain advantage and weak point.
Such as shearing Welded-Stud Conectors simple in construction, but it belongs to flexible connecting member, deformability is bigger, bearing capacity occurs being greatly lowered along with the progress of deformation, and the head of a nail anti-lifts limited in one's ability, its existence significant stress concentration phenomenon with concrete link position, the fatigue behaviour causing Shear connection is the weakest, welding construction quality being required height simultaneously, need special welding of peg equipment, speed of application is slower.
PBL shear connector is to pour into a mould concrete, the concrete being utilized through in hole and the reinforcing bar that penetrates on steel plate after perforate to resist shearing.PBL shear connector rigidity is big, sliding is little, but its deformability is less, brittle break easily occurs, the steel using amount of Shear connection steel plate, on steel plate, the processing cost of boring is higher, and the setting of steel plate is unfavorable for the laying of reinforced mesh, and concrete is substantially separated construction and the performance mass action being unfavorable for concrete by it.
Shaped steel shear connector shearing rigidity is big, and shearing strength is high, but its volume is relatively big, and steel using amount is big, and connector welding is easily caused on steel plate and produces bigger residual stress and deformation.
Bendbor connectors is by arranging angled reinforcing bar between steel plate and concrete, resists the shear flow between steel plate and concrete interface.Bendbor connectors makes simple, need not special equipment during welding, and the anti-shearing and anti-ability of starting is relatively strong, but requires its setting direction more strict, and the requirement to construction is high, and the section of bending up of connector is unfavorable for the layout of reinforcement in concrete mesh sheet.
Utility model content
This utility model solves the technical problem that and is: the weak point existed for existing shear connector, the compound shear connector of a kind of novel steel-concrete structure is provided, shear connector structure is simple, processing is easy, shearing strength is high, rigidity is big, sliding is little, and in-site installation speed is fast, welding quality is secure, construction costs is low.
This utility model adopts the following technical scheme that realization:
The compound shear connector of a kind of steel-concrete structure, including described shear connector 1 and pin reinforcing bar 2；
Described shear connector 1 is bent by reinforcing bar, is divided into the flat segments 11 that two groups of symmetries connect and the spiral annulus 13 connected between the section of bending up 12, and two groups of sections of bending up 12；
The flat segments 11 of described shear connector 1 is fixedly welded on bottom shaped steel girder steel 3, described pin reinforcing bar 2 laterally passes perpendicularly through the spiral annulus 13 of shear connector 1, and shear connector 1 and pin reinforcing bar 2 is together embedded in the top cast-in-place concrete structure part 4 being connected with bottom shaped steel girder steel 3.
Further, described shear connector 1 is arranged in pairs along the axis direction of pin reinforcing bar 2, and the horizontal spacing between shear connector is 6-20 times of pin bar diameter.
Further, described pin reinforcing bar 2 is equidistantly arranged in parallel some groups along the direction of bottom shaped steel girder steel, at least two groups, and its longitudinal pitch comprehensively determines according to the spacing of shear-carrying capacity checking computations and concrete structure upper strata transverse steel.
In this utility model, a length of bend bar diameter 4-6 times of the flat segments 11 at described shear connector 1 two ends, described flat segments 11 bottom is shelved on the end face of the top flange of bottom shaped steel girder steel, and is connected by two-sided welding is fixing with the top board of top flange.
Further, the section of bending up 12 transfer angle of described shear connector 1 is 30 °-60 °, using arc transition to be connected between the section of bending up 12 of same group and flat segments 11, the beginning and end position of described spiral annulus 13 respectively and uses tangentially connected between two groups of sections of bending up 12.
Further, the bar diameter that bends of described shear connector 1 is 8mm-22mm.
Further, a diameter of 8mm-20mm of described pin reinforcing bar 2, the bore inner diameter of described spiral annulus 13 is than the pin reinforcing bar 2 big 10mm-30mm of diameter, with penetrating of convenient construction stage pin reinforcing bar.
The fabrication and installation method of the compound shear connector of steel-concrete structure of the present utility model comprises the following steps:
S301, making girder steel and shear connector, weld shear connector；
S302, the transport of girder steel and lifting；
S303, concrete structure template support；
S304, pin reinforcing bar pass shear connector, and the bar-mat reinforcement of colligation concrete structure；
S305, pour top concrete structure；
The normal maintenance of S306, concrete complete after form removal.
Further, described shear connector uses the hot rolled ribbed bars of high ductility to bend and forms, and needs reinforcing bar is carried out heat treatment, it is to avoid during bending, crackle occurs in rebar surface during bending.
Further, the upper strata transverse steel in the bar-mat reinforcement of described concrete structure passes shear connector as pin reinforcing bar so that it is play the effect of pin reinforcing bar, to reduce amount of reinforcement further simultaneously.
The compound shear connector of this utility model offer and fabrication and installation method thereof, the shear connector bent by reinforcing bar is welded with the top flange top board of shaped steel girder steel, an entirety is formed with concrete again by the transverse steel in the pin reinforcing bar or concrete structure of shear connector spiral circular hole, substantially increase shearing strength and the rigidity of girder steel-concrete combined component, have effectively achieved the cooperative bearing of concrete structure and girder steel.
Compared with prior art, this utility model has the advantages that
1, compound shear connector of the present utility model not only possesses bendbor connectors making simply, welding is easy, the advantages such as the anti-shearing and anti-ability of starting is strong, and it is big to possess PBL shear connector rigidity, the advantages such as sliding is little, it is simple to the laying of cast-in-place concrete structure part reinforced mesh and the pouring construction of concrete；
2, the flat segments of compound shear connector of the present utility model is welded along longitudinal bilateral with steel plate, and is subjected in engineering with girder steel, and welding quality is secure, and is not significantly affected by longitudinal bending rigidity and the intensity of concrete flange plate；
3, compound shear connector steel using amount of the present utility model is greatly lowered than curved muscle shear connector and PBL shear connector, its simple in construction, processes easy, cheap, has wide market prospect.
For the ease of understanding this utility model, below in conjunction with Figure of description and preferred embodiment, this utility model is made more comprehensively, described meticulously, but protection domain of the present utility model is not limited to embodiment in detail below.
Accompanying drawing explanation
Fig. 1 is the schematic diagram after the steel-concrete structure in embodiment installs compound shear connector.
Fig. 2 is the structural representation of the compound shear connector in embodiment.
Fig. 3 is the fabrication and installation construction process figure of the compound shear connector in embodiment.
Label in figure: 1-shear connector, 11-flat segments, the 12-section of bending up, the spiral annulus of 13-, 2-pin reinforcing bar, 3-bottom shaped steel girder steel, 4-top cast-in-place concrete structure part.
Detailed description of the invention
Embodiment
As depicted in figs. 1 and 2, the compound shear connector of this utility model embodiment, including the shear connector 1 using reinforcing bar to bend and the pin reinforcing bar 2 through connector circular hole, reinforcing bar forming of the spiral annulus 13 that the shear connector 1 bent is respectively equipped with flat segments 11 and the section of bending up of the section of bending up 12 by two groups and the section of bending up infall connects；The flat segments 11 being positioned at shear connector both ends is horizontally disposed with, to carry out two-sided welding with the top flange steel plate of bottom shaped steel girder steel 3 to be connected, the two groups of section of bending up 12 one end use arc transition to be connected with flat segments 12, and the other end is respectively screw the start position of formula annulus 13 and emphasis position is tangentially connected.When using reinforcing bar to bend shear connector 1, can be first by the flat segments bending of end, then the interlude between the flat segments of two ends is carried out spiral bending, form spiral annulus 13, annulus both sides then form the section of bending up shown in Fig. 2 12, and two groups of sections of bending up and the flat segments of spiral annulus 13 both sides are symmetrical.
Steel-concrete structure in the present embodiment includes bottom shaped steel girder steel 3 and top poured in place concrete structural member 4, concrete structure can be concrete panel or other building elements, the flat segments 11 of described shear connector 1 is fixedly welded on bottom shaped steel girder steel 3, described pin reinforcing bar 2 laterally passes perpendicularly through the spiral annulus 13 of shear connector 1, and shear connector 1 and pin reinforcing bar 2 is together embedded in the top cast-in-place concrete structure part 4 being connected with bottom shaped steel girder steel 3.Described shear connector 1 is arranged in pairs along the axis direction of pin reinforcing bar 2, horizontal spacing between shear connector is 6-20 times of pin bar diameter, on the longitudinal direction being perpendicular to pin reinforcing bar, described pin reinforcing bar 2 is equidistantly arranged in parallel some groups along the direction of bottom shaped steel girder steel, as shown in Figure 1, at least should be distributed two groups, its longitudinal pitch comprehensively determines according to the spacing of shear-carrying capacity checking computations and concrete structure upper strata transverse steel.
In the present embodiment, the bar diameter making shear connector 1 is 8mm-22mm, and 4-6 times of a length of bar diameter of flat segments 11, with shaped steel girder steel 3 top flange, bottom Plate Welding two-sided welding.The middle section of bending up 12 transfer angle is 30 °-60 °, the spiral annulus beginning and end of the section of bending up infall is tangent with the section of bending up of relevant position to be connected, the internal diameter 10mm-30mm bigger than pin bar diameter of spiral annulus, it is simple to pin reinforcing bar is being passed fast and accurately spiral annulus.
In the present embodiment, through a diameter of 8mm-20mm of pin reinforcing bar 2, the preferably 10mm-20mm of circular hole, the preferential upper strata transverse steel using top cast-in-place concrete structure part colligation plays the effect of pin reinforcing bar through spiral annulus, reduces amount of reinforcement further.
As shown in Figure 3, the fabrication and installation method of the compound shear connector of this utility model embodiment comprises the following steps:
S301, making girder steel and shear connector, weld shear connector；
S302, the transport of girder steel and lifting；
S303, concrete structure template support；
S304, pin reinforcing bar pass shear connector, and the bar-mat reinforcement of colligation concrete structure；
S305, pour top concrete structure；
The normal maintenance of S306, concrete complete after form removal.
The compound shear connector of this utility model embodiment prepare specifically comprising the following steps that of installation method
In step S301, first blanking and the making of girder steel in combinative structure is completed in steel construction processing factory according to design drawing, require that the selected preferable reinforcing bar of ductility bends shear connector according to design requirement in steel bar meter workshop according to design, the preferable high ductility hot rolled ribbed bars of ductility such as HRB400 level or HRB500 level can be used, manufacturing process can carry out face crack occur during heat treatment is avoided bending as required to reinforcing bar.Calculate according to shear resistance capacity and the practical situation of engineering determines the horizontal spacing and longitudinal pitch that shear connector arranges on girder steel, and having required the flat segments of shear connector and the two-sided welding of steel beam flange upper surface according to design, welding quality is tested；
In step s 302, girder steel and corresponding shear connector Welding Testing qualified after, girder steel is transported to job site, uses supporting lifting to equip the lifting of girder steel, transport and hoisting process notes the protection to shear connector；
In step s 304, the bottom layer of the reinforcing steel net of first colligation concrete structure, then in the circular hole of shear connector, penetrate transverse steel or the pin reinforcing bar on upper strata, the top mat of rear colligation concrete structure.Make upper strata transverse steel play the effect of pin reinforcing bar as far as possible during condition license, reduce steel using amount further.
The advantages such as compound shear connector of the present utility model makes simple, and welding is easy, and the anti-shearing and anti-ability of starting is strong, shear stiffness is big, and sliding is little, it is simple to the laying of cast-in-place concrete structure part reinforced mesh and the pouring construction of concrete；Welding along longitudinal bilateral with steel plate, welding quality is secure, and is not significantly affected by longitudinal bending rigidity and the intensity of concrete flange plate.
Compound shear connector steel using amount of the present utility model is greatly lowered than curved muscle shear connector and PBL shear connector, its simple in construction, processes easy, cheap, has wide market prospect.
The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all any amendment, equivalent and improvement etc. made within spirit of the present utility model and principle, within should be included in protection domain of the present utility model.
Claims (7)
1. the compound shear connector of a steel-concrete structure, it is characterised in that include shear connector (1) and pin reinforcing bar (2)；
Described shear connector (1) is bent by reinforcing bar, is divided into the spiral annulus (13) connected between flat segments (11) and the section of bending up (12), and two groups of sections of bending up (12) of two groups of symmetries connections；
The flat segments (11) of described shear connector (1) is fixedly welded on bottom shaped steel girder steel (3), described pin reinforcing bar (2) laterally passes perpendicularly through the spiral annulus (13) of shear connector (1), and shear connector (1) and pin reinforcing bar (2) is together embedded in top cast-in-place concrete structure part (4) being connected with bottom shaped steel girder steel (3).
The compound shear connector of a kind of steel-concrete structure the most according to claim 1, described shear connector (1) is arranged in pairs along the axis direction of pin reinforcing bar (2), and the horizontal spacing between shear connector is 6-20 times of pin bar diameter.
The compound shear connector of a kind of steel-concrete structure the most according to claim 2, described pin reinforcing bar (2) is equidistantly arranged in parallel some groups along the direction of bottom shaped steel girder steel, at least two groups.
4. according to the compound shear connector of a kind of steel-concrete structure according to any one of claim 1-3, a length of bend bar diameter 4-6 times of the flat segments (11) at described shear connector (1) two ends, described flat segments (11) bottom is shelved on the end face of the top flange of bottom shaped steel girder steel, and is connected by two-sided welding is fixing with the top board of top flange.
The compound shear connector of a kind of steel-concrete structure the most according to claim 4, the section of bending up (12) transfer angle of described shear connector (1) is 30 °-60 °, using arc transition to be connected between the section of bending up (12) of same group and flat segments (11), the beginning and end position of described spiral annulus (13) respectively and uses tangentially connected between two groups of sections of bending up (12).
The compound shear connector of a kind of steel-concrete structure the most according to claim 5, the bar diameter that bends of described shear connector (1) is 8mm-22mm.
The compound shear connector of a kind of steel-concrete structure the most according to claim 6, a diameter of 8mm-20mm of described pin reinforcing bar (2), the bore inner diameter of described spiral annulus (13) is than the big 10mm-30mm of pin reinforcing bar (2) diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620129938.8U CN205421722U (en) | 2016-02-19 | 2016-02-19 | Steel - concrete structure's compound shear force connecting piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620129938.8U CN205421722U (en) | 2016-02-19 | 2016-02-19 | Steel - concrete structure's compound shear force connecting piece |
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| Publication Number | Publication Date |
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| CN205421722U true CN205421722U (en) | 2016-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620129938.8U Withdrawn - After Issue CN205421722U (en) | 2016-02-19 | 2016-02-19 | Steel - concrete structure's compound shear force connecting piece |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105569271A (en) * | 2016-02-19 | 2016-05-11 | 中南大学 | Composite shear connection piece of steel-concrete structure and manufacturing and installing method thereof |
| CN107268804A (en) * | 2017-08-09 | 2017-10-20 | 衡水益通管业股份有限公司 | A kind of shear connector for corrugated steel concrete combined structure |
| CN110158464A (en) * | 2019-06-03 | 2019-08-23 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | A kind of novel shear key combination beam and its construction method |
| CN112456301A (en) * | 2020-11-27 | 2021-03-09 | 上海宝冶集团有限公司 | Prefabricated shear wall, prefabricated shear wall lifting appliance and lifting method thereof |
| CN113417370A (en) * | 2021-06-01 | 2021-09-21 | 香港理工大学 | Cold bending inverted-V-shaped rigid shear connector |
-
2016
- 2016-02-19 CN CN201620129938.8U patent/CN205421722U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105569271A (en) * | 2016-02-19 | 2016-05-11 | 中南大学 | Composite shear connection piece of steel-concrete structure and manufacturing and installing method thereof |
| CN105569271B (en) * | 2016-02-19 | 2018-03-16 | 中南大学 | The compound shear connector and its fabrication and installation method of a kind of steel-concrete structure |
| CN107268804A (en) * | 2017-08-09 | 2017-10-20 | 衡水益通管业股份有限公司 | A kind of shear connector for corrugated steel concrete combined structure |
| CN107268804B (en) * | 2017-08-09 | 2023-07-14 | 衡水益通管业股份有限公司 | Shear connector for corrugated steel plate-concrete combined structure |
| CN110158464A (en) * | 2019-06-03 | 2019-08-23 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | A kind of novel shear key combination beam and its construction method |
| CN112456301A (en) * | 2020-11-27 | 2021-03-09 | 上海宝冶集团有限公司 | Prefabricated shear wall, prefabricated shear wall lifting appliance and lifting method thereof |
| CN113417370A (en) * | 2021-06-01 | 2021-09-21 | 香港理工大学 | Cold bending inverted-V-shaped rigid shear connector |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160803 Effective date of abandoning: 20180316 |