CN111749117A - Dumbbell-shaped stud shear connector and construction method thereof - Google Patents
Dumbbell-shaped stud shear connector and construction method thereof Download PDFInfo
- Publication number
- CN111749117A CN111749117A CN202010559932.5A CN202010559932A CN111749117A CN 111749117 A CN111749117 A CN 111749117A CN 202010559932 A CN202010559932 A CN 202010559932A CN 111749117 A CN111749117 A CN 111749117A
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- Prior art keywords
- stud
- precast concrete
- dumbbell
- bottom plate
- shear connector
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- 238000010276 construction Methods 0.000 title claims abstract description 20
- 239000011178 precast concrete Substances 0.000 claims abstract description 42
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 40
- 239000010959 steel Substances 0.000 claims abstract description 40
- 239000004567 concrete Substances 0.000 claims abstract description 19
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 8
- 230000002787 reinforcement Effects 0.000 claims description 13
- 238000003466 welding Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims 1
- 239000000463 material Substances 0.000 description 4
- 239000002131 composite material Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Rod-Shaped Construction Members (AREA)
Abstract
The invention relates to the technical field of bridges, in particular to a dumbbell-shaped stud shear connector, which comprises: the steel beam, the precast concrete bottom plate and the stud; the steel beam is I-shaped steel, the studs are arrayed into stud blocks on the flange plate of the steel beam in an m x n mode, wherein m and n are integers larger than 1, and the stud blocks are arranged at intervals; the precast concrete bottom plate sets up on the girder steel, is provided with the preformed hole on the precast concrete bottom plate, and the preformed hole is worn to establish the precast concrete bottom plate setting, and the position and the size of preformed hole correspond with the peg piece, have filled the mortar in the preformed hole. The invention improves the fixing speed of the steel-concrete structure connecting piece and accelerates the construction efficiency by the way of reserving hole sites on the precast concrete bottom plate, and the shear-resistant bearing capacity of the stud is improved and the bearing capacity and the safety of the structure are improved according to the arrangement mode of the stud blocks by the stud. The invention also discloses a construction method of the dumbbell-shaped stud shear connector.
Description
Technical Field
The invention relates to the technical field of bridges, in particular to a dumbbell-shaped stud shear connector and a construction method thereof.
Background
The stud connecting piece is a shear connecting piece with wide application of a steel-concrete combined structure, has low manufacturing cost and convenient construction, but also has certain problems, wherein the more remarkable problem is that the shear connecting piece has lower shear resistance. The shear force connecting piece is an important component of the steel-concrete composite structure, and the premise that the steel-concrete composite structure can play a structural bearing role is that a concrete slab and a steel beam are connected into a whole through the shear force connecting piece and are stressed cooperatively.
In the prior art, the traditional stud shear connector adopts a cylindrical stud, so that the material waste is avoided due to the fact that a plurality of stressed cross sections are provided, the bearing capacity is low, the prefabricated assembly cannot be carried out, and the safety and the construction speed of the structure are greatly influenced.
In view of the above problems, the designer actively makes research and innovation based on the practical experience and professional knowledge of the engineering application of the product for many years, so as to create a dumbbell-shaped stud shear connector and a construction method thereof, and the dumbbell-shaped stud shear connector has higher practicability.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the dumbbell-shaped stud shear connector and the construction method thereof are provided, and the safety performance and the construction speed of a steel-concrete structure are improved.
In order to achieve the above object, an aspect of the present invention provides a dumbbell type stud shear connector, comprising:
the steel beam, the precast concrete bottom plate and the stud;
the steel beam is an I-shaped steel, the studs are arrayed on a flange plate of the steel beam in an m x n mode to form stud blocks, wherein m and n are integers larger than 1, and the stud blocks are arranged at intervals;
the precast concrete bottom plate sets up on the girder steel, be provided with the preformed hole on the precast concrete bottom plate, the preformed hole is worn to establish the precast concrete bottom plate sets up, just the position and the size of preformed hole with the dowel piece corresponds, the preformed hole has been filled with the mortar.
Preferably, the stud is a dumbbell-shaped stud and comprises a cylindrical head, a small-diameter rod and a large-diameter rod, and the length of the stud is not more than the thickness of the precast concrete base plate.
Preferably, the wide-diameter rod is fixed to the steel beam by welding.
Preferably, the pegs are arrayed along the length and width directions of the steel beam, and the array distance of the pegs is smaller than the distance between the peg blocks.
Preferably, the pegs are arrayed in a 3 x 3 pattern.
Preferably, prestressed reinforcement is arranged in the precast concrete floor.
The invention provides a construction method of the dumbbell-shaped stud shear connector, which comprises the following steps:
preparing a precast concrete bottom plate, and arranging a preformed hole on the concrete bottom plate;
pushing the precast concrete bottom plate to the specified position of the steel beam;
welding studs on the flange plates of the steel beams in the reserved holes;
and pouring high-strength mortar into the reserved hole.
Preferably, a prestressed reinforcement is arranged in the precast concrete bottom plate, the prestressed reinforcement penetrates through the reserved hole, and when the stud is welded, the stud is welded and connected with the prestressed reinforcement.
The invention has the beneficial effects that: the invention improves the fixing speed of the steel-concrete structure connecting piece and accelerates the construction efficiency by the way of reserving hole sites on the precast concrete bottom plate, and the shear-resistant bearing capacity of the stud is improved, the utilization rate of stud materials is improved, and the bearing capacity and the safety of the structure are improved according to the arrangement mode of the stud blocks.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a front view of a dumbbell-type stud shear connector in an embodiment of the invention;
FIG. 2 is a top view of a dumbbell-type stud shear connector in an embodiment of the invention;
FIG. 3 is a side view of a label picking and transferring mechanism in an embodiment of the present invention;
FIG. 4 is a front view of a precast concrete floor according to an embodiment of the present invention;
FIG. 5 is a top view of a precast concrete floor in an embodiment of the present invention;
FIG. 6 is a side view of a precast concrete floor in an embodiment of the present invention;
FIG. 7 is a schematic view of the structure of the peg in the embodiment of the present invention.
Reference numerals: 1-steel beam, 2-precast concrete bottom plate, 3-stud, 4-mortar, 21-preformed hole, 31-cylindrical head, 32-thin-diameter rod and 33-thick-diameter rod.
Detailed Description
The stud shear connector is characterized in that a cylindrical stud is adopted for the conventional stud shear connector, the number of stress sections is small, material waste is caused, the bearing capacity is low, prefabrication and assembly cannot be carried out, and the safety and the construction speed of the structure are greatly influenced. To a problem of (a). The novel shear connector innovation point disclosed by the invention comprises a novel structure of the dumbbell-shaped stud and a skillful stud arrangement form, overcomes the two defects, has a better engineering value, and is worthy of great popularization.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
The dumbbell-shaped stud shear connector shown in fig. 1 to 7 comprises: the steel beam 1, the precast concrete bottom plate 2 and the stud 3;
the steel beam 1 is I-shaped steel, the studs 3 are arrayed into stud blocks on the flange plate of the steel beam 1 in an m x n mode, wherein m and n are integers larger than 1, and the stud blocks are arranged at intervals; as a preference of this embodiment, the pegs 3 are arranged in a 3 x 3 pattern.
Precast concrete bottom plate 2 sets up on girder steel 1, is provided with preformed hole 21 on precast concrete bottom plate 2, and preformed hole 21 wears to establish precast concrete bottom plate 2 and sets up, and the position and the size of preformed hole 21 correspond with the peg piece, have poured into mortar 4 in the preformed hole 21.
The invention improves the fixing speed of the steel-concrete structure connecting piece and accelerates the construction efficiency by the way of reserving hole sites on the precast concrete bottom plate 2, and the shear-resistant bearing capacity of the stud is improved and the bearing capacity and the safety of the structure are improved by the arrangement mode of the stud blocks of the stud 3.
As shown in fig. 7, the peg 3 is a dumbbell-shaped peg, which includes a cylindrical head 31, a small diameter rod 32 and a large diameter rod 33, and the length of the peg 3 is not greater than the thickness of the precast concrete floor 2. The structural form that the stud is thin in the middle and thick at two ends is adopted, so that the contact area between the stud and concrete after the concrete is poured is increased, the interaction force between the stud and the concrete is increased, and the overall strength of the steel-concrete structure is improved. It should be noted that the sizes of the three parts of the dumbbell-shaped peg should be adjusted according to different stress conditions according to the calculation change, so as to ensure the maximum utilization rate of the peg.
In the present embodiment, the wide-diameter rod 33 is fixed to the steel beam 1 by welding. The arrangement of the thick-diameter rod 33 enables the welding seam area when the thick-diameter rod is welded with the steel beam 1 to be larger than that of the cylindrical head stud in the prior art, improves the welding strength of the stud 3 and the steel beam 1, and ensures the shearing resistance of the stud 3 as a connecting piece.
In this embodiment, the studs 3 are arrayed along the length and width of the steel beam 1, and the array distance of the studs 3 is smaller than the distance between stud blocks. Through the mode of stud array, reduced the quantity of trompil on the precast concrete bottom plate 2, when having improved the bulk strength of precast concrete bottom plate 2 structure, the welding of the stud 3 of also being convenient for, this kind of setting has both improved the security performance of structure and has improved the construction speed of engineering.
Preferably, the precast concrete floor 2 has prestressed reinforcements arranged therein. Through the arrangement of the prestressed reinforcement, the prestressed reinforcement is enabled to generate stress in advance, the rigidity of the structure can be improved, and vibration and elastic deformation are reduced.
The invention provides a construction method of the dumbbell-shaped stud shear connector, which comprises the following steps:
preparing a precast concrete bottom plate, and arranging a preformed hole on the concrete bottom plate;
pushing the precast concrete bottom plate to the specified position of the steel beam;
welding studs on the flange plates of the steel beams in the reserved holes;
and pouring high-strength mortar into the reserved hole.
Compared with the prior art, the steel-concrete structure of the invention does not need to pour the concrete bottom plate and the steel beam together, only needs to provide the preformed holes corresponding to the stud blocks on the precast concrete bottom plate, improves the construction speed of the steel-concrete structure, and in addition, the studs are welded in the preformed holes in an array mode and are arranged at intervals, thereby reducing the number of the holes on the precast concrete and improving the connection strength of the studs, therefore, the safety and the construction speed of the steel-concrete structure are improved.
Preferably, the precast concrete bottom plate is internally provided with prestressed reinforcements, the prestressed reinforcements penetrate through the preformed holes, and the studs are welded and connected with the prestressed reinforcements when being welded. Through being connected of prestressing steel and peg, transmit a part prestressing force to the girder steel, improved prestressing force's application efficiency.
The dumbbell-shaped stud is a brand-new stud in a structural form, and the utilization rate of materials is greatly improved compared with the traditional stud; and secondly, the arrangement form of the connecting piece is compared with the conventional stud, because the strength of the stud is increased, the bearing capacity is greatly improved under the condition of the same interval, the arrangement quantity is reduced under the condition of the same bearing capacity, the prior art is improved, and the construction efficiency is improved.
It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. A dumbbell-shaped stud shear connector, comprising: the steel beam (1), the precast concrete bottom plate (2) and the stud (3);
the steel beam (1) is an I-shaped steel, the studs (3) are arrayed into stud blocks on a flange plate of the steel beam (1) in an m x n mode, wherein m and n are integers larger than 1, and the stud blocks are arranged at intervals;
precast concrete bottom plate (2) set up on girder steel (1), be provided with preformed hole (21) on precast concrete bottom plate (2), preformed hole (21) are worn to establish precast concrete bottom plate (2) set up, just the position and the size of preformed hole (21) with the dowel piece corresponds, pour into mortar (4) in preformed hole (21).
2. The dumbbell-shaped stud shear connector according to claim 1, characterized in that the stud (3) is a dumbbell-shaped stud comprising a cylindrical head (31), a small-diameter rod (32) and a large-diameter rod (33), the length of the stud (3) being no greater than the thickness of the precast concrete floor (2).
3. The dumbbell-type stud shear connector of claim 2, characterized in that the wide-diameter rod (33) is fixed to the steel beam (1) by welding.
4. The dumbbell-type stud shear connector of claim 1, characterized in that the studs (3) are arrayed in the length and width directions of the steel beam (1), the array distance of the studs (3) being smaller than the distance between the stud blocks.
5. The dumbbell pin shear connector of claim 1, characterized in that the pins (3) are arrayed in a 3 x 3 pattern.
6. The dumbbell-type stud shear connector of claim 1, characterized in that pre-stressed steel bars are arranged within the precast concrete floor (2).
7. A construction method of a dumbbell-shaped stud shear connector is characterized by comprising the following steps:
preparing a precast concrete bottom plate, and arranging a preformed hole on the concrete bottom plate;
pushing the precast concrete bottom plate to the specified position of the steel beam;
welding studs on the flange plates of the steel beams in the reserved holes;
and pouring high-strength mortar into the reserved hole.
8. The method for constructing the dumbbell-shaped stud shear connector according to claim 7, wherein a prestressed reinforcement is arranged in the precast concrete base plate, the prestressed reinforcement penetrates through the reserved hole, and when the stud is welded, the stud is welded with the prestressed reinforcement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010559932.5A CN111749117A (en) | 2020-06-18 | 2020-06-18 | Dumbbell-shaped stud shear connector and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010559932.5A CN111749117A (en) | 2020-06-18 | 2020-06-18 | Dumbbell-shaped stud shear connector and construction method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111749117A true CN111749117A (en) | 2020-10-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010559932.5A Pending CN111749117A (en) | 2020-06-18 | 2020-06-18 | Dumbbell-shaped stud shear connector and construction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111749117A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202047477U (en) * | 2011-04-29 | 2011-11-23 | 台州职业技术学院 | Pin for construction |
| CN203546589U (en) * | 2013-10-24 | 2014-04-16 | 同济大学 | Steel girder-integral lifting arm prefabricated concrete bridge panel combined girder bridge |
| CN204238121U (en) * | 2014-11-10 | 2015-04-01 | 河南大建桥梁钢构股份有限公司 | Wavelike steel webplate flush type opening dumbbell connecting key |
| CN105297978A (en) * | 2015-11-18 | 2016-02-03 | 湖南大学 | Prefabricated assembled type steel-concrete combined beam connected through bolt nails |
| CN206070849U (en) * | 2016-10-11 | 2017-04-05 | 湖北楚峰建科集团荆州开元新材有限公司 | A kind of steam pressure sand aerated concrete foamed bricks |
| CN108193588A (en) * | 2017-12-29 | 2018-06-22 | 西南交通大学 | A kind of assembled steel-mixed bondbeam shear connector |
| CN108677683A (en) * | 2018-04-28 | 2018-10-19 | 华侨大学 | Improve the combined bridge and production method of shear connector fatigue life |
| US20190063014A1 (en) * | 2016-11-09 | 2019-02-28 | Shenzhen Municipal Design & Research Institute Co. Ltd. | Rigid hanger connecting structure and bridge structure |
| CN110409280A (en) * | 2019-07-24 | 2019-11-05 | 中交第一公路勘察设计研究院有限公司 | Assembled Fast Installation combination beam |
| CN110965700A (en) * | 2019-12-19 | 2020-04-07 | 华侨大学 | Steel-concrete composite beam connected by adopting studs, epoxy mortar and bolts |
-
2020
- 2020-06-18 CN CN202010559932.5A patent/CN111749117A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202047477U (en) * | 2011-04-29 | 2011-11-23 | 台州职业技术学院 | Pin for construction |
| CN203546589U (en) * | 2013-10-24 | 2014-04-16 | 同济大学 | Steel girder-integral lifting arm prefabricated concrete bridge panel combined girder bridge |
| CN204238121U (en) * | 2014-11-10 | 2015-04-01 | 河南大建桥梁钢构股份有限公司 | Wavelike steel webplate flush type opening dumbbell connecting key |
| CN105297978A (en) * | 2015-11-18 | 2016-02-03 | 湖南大学 | Prefabricated assembled type steel-concrete combined beam connected through bolt nails |
| CN206070849U (en) * | 2016-10-11 | 2017-04-05 | 湖北楚峰建科集团荆州开元新材有限公司 | A kind of steam pressure sand aerated concrete foamed bricks |
| US20190063014A1 (en) * | 2016-11-09 | 2019-02-28 | Shenzhen Municipal Design & Research Institute Co. Ltd. | Rigid hanger connecting structure and bridge structure |
| CN108193588A (en) * | 2017-12-29 | 2018-06-22 | 西南交通大学 | A kind of assembled steel-mixed bondbeam shear connector |
| CN108677683A (en) * | 2018-04-28 | 2018-10-19 | 华侨大学 | Improve the combined bridge and production method of shear connector fatigue life |
| CN110409280A (en) * | 2019-07-24 | 2019-11-05 | 中交第一公路勘察设计研究院有限公司 | Assembled Fast Installation combination beam |
| CN110965700A (en) * | 2019-12-19 | 2020-04-07 | 华侨大学 | Steel-concrete composite beam connected by adopting studs, epoxy mortar and bolts |
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Application publication date: 20201009 |
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