CN110965648A - Shear connector structure of assembled steel-concrete composite structure - Google Patents
Shear connector structure of assembled steel-concrete composite structure Download PDFInfo
- Publication number
- CN110965648A CN110965648A CN201911320453.1A CN201911320453A CN110965648A CN 110965648 A CN110965648 A CN 110965648A CN 201911320453 A CN201911320453 A CN 201911320453A CN 110965648 A CN110965648 A CN 110965648A
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- Prior art keywords
- steel
- concrete
- shear connector
- flange plate
- upper flange
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- 239000004567 concrete Substances 0.000 title claims abstract description 61
- 239000002131 composite material Substances 0.000 title claims description 18
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 70
- 239000010959 steel Substances 0.000 claims abstract description 70
- 230000000149 penetrating effect Effects 0.000 claims abstract description 5
- 238000010276 construction Methods 0.000 abstract description 8
- 238000010008 shearing Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 239000011178 precast concrete Substances 0.000 description 6
- 230000007547 defect Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011372 high-strength concrete Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/388—Separate connecting elements
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The invention provides a shear connector structure of an assembly type steel-concrete combined structure, which comprises a prefabricated concrete panel and a steel beam, wherein the concrete panel is bonded to an upper flange plate of the steel beam; the prefabricated concrete panel is provided with a post-pouring hole in a penetrating way along the thickness direction; a shear connector is arranged at the position of the upper flange plate corresponding to the post-pouring hole; the shear connector comprises a screw rod, a nut, an upper steel ring, a lower steel ring and a spring; the spring is connected between the two steel rings, the screw rod penetrates through the upper steel ring and the lower steel ring, and the lower end of the screw rod penetrates through the upper flange plate to be connected with the nut. The shear connector structure adopts a bolt connection mode, and is convenient to disassemble. The screw rod is fixed through the fixing piece and the nut, so that the shearing force piece is convenient and fast to apply and operate in the construction of the combined structure, high in efficiency and capable of guaranteeing construction quality. Secondly, by applying pretightening force to the nut, the concrete and the steel beam are in a prepressing state, the interface stress effect of the combined structure is increased, and the overall stress performance of the steel-concrete structure is improved.
Description
Technical Field
The invention relates to the field of civil engineering and high-rise building engineering, in particular to a shear connector structure of two assembled steel-concrete composite structures.
Background
In recent years, steel-concrete composite structures are widely used in China, for example, in composite beams, composite columns and composite walls of high-rise buildings, and particularly in bridges of civil engineering, such as projects of mao bridges in hong Kong Zhu and Australia. The combined structure gives full play to the physical and stress performances of steel and concrete, and has the advantages of light dead weight, increased use clearance, short construction period and good earthquake resistance. The connection between the steel beam and the concrete slab mainly resists the sliding and lifting of the interface through the shear connector, so that the two form a combined mechanism and work together, and the shear connector plays a role in the combined structure to be critical.
However, the prior art has obvious defects: the shear part bolt commonly used in the existing composite beam bridge structure is easy to generate fatigue fracture under the action of vehicle load; the concrete bridge deck is easy to generate fatigue failure under the action of vehicle fatigue load, so that the service life of the bridge deck member is often shorter than the design service life of a full-bridge structure, and the total life cycle cost of the bridge is increased. Therefore, a shear connector convenient to construct and operate is needed, when the concrete panel is damaged, only the shear connector needs to be disassembled to replace the bridge deck, and further engineering cost is saved.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide two novel bolt connecting structures of a shearing part which is convenient to assemble and disassemble and is adopted for prolonging the whole cycle life of a combined structure.
In order to solve the technical problem, the invention provides a shear connector structure of an assembly type steel-concrete combined structure, which comprises a prefabricated concrete panel and a steel beam, wherein the concrete panel is bonded to an upper flange plate of the steel beam; the prefabricated concrete panel is provided with a post-pouring hole in a penetrating manner along the thickness direction; a shear connecting piece is arranged at the position of the upper flange plate corresponding to the post-pouring hole;
the shear connecting piece comprises a screw rod, a nut, an upper steel ring, a lower steel ring and a spring; the spring is connected between the two steel rings, the screw rod penetrates through the upper steel ring and the lower steel ring, and the lower end of the screw rod penetrates through the upper flange plate to be connected with the nut.
In a preferred embodiment: concrete is poured in the post-pouring hole.
In a preferred embodiment: and the bolt applies normal pre-pressure to a steel-concrete combined structure interface formed by the concrete panel and the upper flange plate through a nut.
In a preferred embodiment: the spring remains compressed.
The invention also provides a shear connector structure of the assembly type steel-concrete combined structure, which comprises a prefabricated concrete panel and a steel beam, wherein the concrete panel is bonded to the upper flange plate of the steel beam; the prefabricated concrete panel is provided with a post-pouring hole in a penetrating manner along the thickness direction; a shear connecting piece is arranged at the position of the upper flange plate corresponding to the post-pouring hole;
the shear force connecting piece comprises a screw rod, a nut, an upper steel ring, a lower steel ring and a left elastic telescopic pipe and a right elastic telescopic pipe, the two elastic telescopic pipes are respectively connected between the two steel rings, the screw rod penetrates through the upper steel ring and the lower steel ring, and the lower end of the screw rod penetrates through the upper flange plate to be connected with the nut.
In a preferred embodiment: concrete is poured in the post-pouring hole.
In a preferred embodiment: and the bolt applies normal pre-pressure to a steel-concrete combined structure interface formed by the concrete panel and the upper flange plate through a nut.
In a preferred embodiment: the invention has the following beneficial effects that the elastic telescopic pipe keeps a compressed state:
the shear connector structure at the steel-concrete composite structure interface adopts a bolt connection mode, and is convenient to disassemble. The screw rod is fixed through the first fixing part, the second fixing part and the nut, so that the shearing force piece is convenient and fast to apply and operate in the construction of the combined structure, the efficiency is high, and the construction quality is guaranteed. Secondly, by applying pretightening force to the nut, the concrete and the steel beam are in a prepressing state, the interface stress effect of the combined structure is increased, and the overall stress performance of the steel-concrete structure is improved.
Drawings
FIG. 1 is a schematic view of a steel beam upper flange prepared hole;
FIG. 2 is a schematic view of the assembly of a steel beam with a precast concrete panel (no casting in the post-cast hole);
FIG. 3 is a schematic view of a steel-concrete composite structure mounting shear connector bolt;
FIG. 4 is a schematic structural view of a steel-concrete composite structure;
FIG. 5 is a schematic view of a fastener;
FIG. 6 is a schematic view of a bolt configuration;
FIG. 7 is a schematic view of a bolt construction assembled to a steel beam;
FIG. 8 is a second schematic view of the fixing member;
FIG. 9 is a schematic view of a second bolt configuration;
FIG. 10 is a schematic view of a second bolt structure assembled on a steel beam;
in the figure: 10 is a steel beam, 11 is an upper flange plate, and 12 is an upper flange preformed hole; 20 is a precast concrete panel, 21 is a post-pouring hole; 30 is a shear connector; 40 is cast-in-place concrete; steel ring 1 at 50 and spring 1 at 51; 60 is screw 1, 61 is nut 1; 80 is steel ring 2, 81 is round steel pipe, 82 is round steel sleeve, 83 is spring 2; 90 is the screw 2 and 91 is the nut 2.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
The invention aims to overcome the defects of the steel-concrete combined structural member in the prior art, provides the shear connector structure of the assembly type steel-concrete combined structure, improves the whole-period service life, the construction efficiency and the quality of the combined structure, improves the structural stress performance, and has the advantages of reasonable structural design, simple structure, superior stress performance and convenient construction.
As shown in fig. 1-10, a shear connector structure of an assembled steel-concrete composite structure. Fig. 1 and 2 include a steel beam 10, a precast concrete panel 20, and an upper flange plate 11 of the steel beam 10 to which the precast concrete panel 20 is bonded; in FIG. 3, a shear connector 30 is arranged at the position of the upper flange plate 11 corresponding to the post-cast hole 21; concrete 40 is poured into the post-cast hole 21, and the schematic structure of the assembled steel-concrete combination is shown in fig. 4.
The shear connection is embodied as shown in fig. 5-10. The bolt structure shown in fig. 6 specifically comprises a first fixing member, a screw rod 60 and a nut 61. As shown in FIG. 5, the fixing member is composed of an upper steel ring 50, a lower steel ring 50 and a spring 51, wherein the spring 50 is connected between the two steel rings 50.
The screw 60 is sleeved into the fixing piece and penetrates through the upper flange 11 of the steel beam again, the tail part of the bolt 60 is fastened on the screw by a nut 61, and a pre-tightening force is applied by a torque wrench, so that the spring 51 is kept in a compressed state.
Similarly, as a simple alternative, the second bolt structure shown in fig. 6 specifically comprises a second fixing member, a screw 90 and a nut 91. As shown in FIG. 8, the second fixing member comprises an upper steel ring 80, a lower steel ring 80, a left elastic telescopic tube and a right elastic telescopic tube. The two elastic telescopic pipes are respectively connected between the two steel rings 80.
The elastic telescopic pipe comprises a round steel pipe 81, a round steel sleeve 82 and a spring 83. The round steel pipe 81 is sleeved in the two round steel sleeves 82, the round steel sleeves 82 are hollow, and the same springs 83 are respectively arranged in the round steel sleeves 82.
The screw 90 is sleeved into the second fixing piece and then penetrates through the upper flange 12 of the steel beam, the tail part of the bolt is fastened by a nut 91, and then pre-tightening force is applied by a torque wrench, so that the spring 83 is kept in a compressed state.
The production method of the invention has the following corresponding forms in the process:
as shown in fig. 1, screw holes 12 are reserved in an upper flange plate 11 of a steel beam 10, and the screw holes 12 are arranged in proper rows along the longitudinal direction of the steel beam 10 according to a space meeting design requirements, so that the security steel beam 10 is hoisted.
As shown in fig. 2, the precast concrete panel 20 combines the precast concrete panel 20 with the steel beam by an interface adhesive according to design requirements, leaving a post-cast hole 21 free of casting.
As shown in fig. 3, the screw of the shear connector 30 has strength and size to meet the requirement of shear resistance. The screw is sleeved into the fixing piece, then passes through the preformed hole 12 of the steel beam 10, and the tail part of the bolt is fastened by a nut.
As shown in fig. 4, the non-shrinkage self-flow dense high-strength concrete 40 is poured into the post-cast hole 21, and when the concrete 40 reaches the design strength, the torque wrench applies the design torque to the nut, so that the interface between the concrete 40 panel and the steel beam 10 is in a pre-pressed state.
The above examples are provided only for illustrating the present invention and are not intended to limit the present invention. Changes, modifications, etc. to the above-described embodiments are intended to fall within the scope of the claims of the present invention as long as they are in accordance with the technical spirit of the present invention.
Claims (8)
1. A shear connector structure of an assembly type steel-concrete combined structure is characterized by comprising a prefabricated concrete panel and a steel beam, wherein the concrete panel is bonded to an upper flange plate of the steel beam; the prefabricated concrete panel is provided with a post-pouring hole in a penetrating manner along the thickness direction; a shear connecting piece is arranged at the position of the upper flange plate corresponding to the post-pouring hole;
the shear connecting piece comprises a screw rod, a nut, an upper steel ring, a lower steel ring and a spring; the spring is connected between the two steel rings, the screw rod penetrates through the upper steel ring and the lower steel ring, and the lower end of the screw rod penetrates through the upper flange plate to be connected with the nut.
2. The shear connector structure of an assembled steel-concrete combination according to claim 1, wherein concrete is poured into the post-cast hole.
3. An assembled steel-concrete composite shear connector structure according to claim 1, wherein the bolts apply normal pre-stress to the steel-concrete composite structure interface formed by the concrete panel and the upper flange plate through nuts.
4. The shear connector structure of an assembled steel-concrete composite structure according to claim 1, wherein the spring is kept in a compressed state.
5. A shear connector structure of an assembly type steel-concrete combined structure is characterized by comprising a prefabricated concrete panel and a steel beam, wherein the concrete panel is bonded to an upper flange plate of the steel beam; the prefabricated concrete panel is provided with a post-pouring hole in a penetrating manner along the thickness direction; a shear connecting piece is arranged at the position of the upper flange plate corresponding to the post-pouring hole;
the shear force connecting piece comprises a screw rod, a nut, an upper steel ring, a lower steel ring and a left elastic telescopic pipe and a right elastic telescopic pipe, the two elastic telescopic pipes are respectively connected between the two steel rings, the screw rod penetrates through the upper steel ring and the lower steel ring, and the lower end of the screw rod penetrates through the upper flange plate to be connected with the nut.
6. The shear connector structure of an assembled steel-concrete combination according to claim 1, wherein concrete is poured into the post-cast hole.
7. An assembled steel-concrete composite shear connector structure according to claim 1, wherein the bolts apply normal pre-stress to the steel-concrete composite structure interface formed by the concrete panel and the upper flange plate through nuts.
8. The shear connector structure of an assembled steel-concrete composite structure according to claim 1, wherein the elastic telescopic tube is kept in a compressed state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911320453.1A CN110965648B (en) | 2019-12-19 | 2019-12-19 | Shear connector structure of assembled steel-concrete combined structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911320453.1A CN110965648B (en) | 2019-12-19 | 2019-12-19 | Shear connector structure of assembled steel-concrete combined structure |
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| Publication Number | Publication Date |
|---|---|
| CN110965648A true CN110965648A (en) | 2020-04-07 |
| CN110965648B CN110965648B (en) | 2024-05-14 |
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| CN201911320453.1A Active CN110965648B (en) | 2019-12-19 | 2019-12-19 | Shear connector structure of assembled steel-concrete combined structure |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080103678A (en) * | 2007-05-25 | 2008-11-28 | 삼표이앤씨 주식회사 | Method for composite girder and bridge construction method composite girder |
| CN203755452U (en) * | 2014-03-12 | 2014-08-06 | 南京工业大学 | Bolt shear connector |
| CN207609191U (en) * | 2017-11-29 | 2018-07-13 | 中建远南集团有限公司 | A kind of column angle protective device of detachable concrete column |
| CN108330806A (en) * | 2018-03-28 | 2018-07-27 | 华侨大学 | The steel-that compoiste adhering anchors shear connections knot mixes combined beam structure and production method |
| CN212453089U (en) * | 2019-12-19 | 2021-02-02 | 华侨大学 | Shear connector structure of assembled steel-concrete composite structure |
-
2019
- 2019-12-19 CN CN201911320453.1A patent/CN110965648B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080103678A (en) * | 2007-05-25 | 2008-11-28 | 삼표이앤씨 주식회사 | Method for composite girder and bridge construction method composite girder |
| CN203755452U (en) * | 2014-03-12 | 2014-08-06 | 南京工业大学 | Bolt shear connector |
| CN207609191U (en) * | 2017-11-29 | 2018-07-13 | 中建远南集团有限公司 | A kind of column angle protective device of detachable concrete column |
| CN108330806A (en) * | 2018-03-28 | 2018-07-27 | 华侨大学 | The steel-that compoiste adhering anchors shear connections knot mixes combined beam structure and production method |
| CN212453089U (en) * | 2019-12-19 | 2021-02-02 | 华侨大学 | Shear connector structure of assembled steel-concrete composite structure |
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| Publication number | Publication date |
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| CN110965648B (en) | 2024-05-14 |
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