CN210263430U - Pressure-bearing shear type connecting piece - Google Patents
Pressure-bearing shear type connecting piece Download PDFInfo
- Publication number
- CN210263430U CN210263430U CN201920738334.7U CN201920738334U CN210263430U CN 210263430 U CN210263430 U CN 210263430U CN 201920738334 U CN201920738334 U CN 201920738334U CN 210263430 U CN210263430 U CN 210263430U
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- bearing
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- plate
- shear
- steel beam
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 55
- 239000010959 steel Substances 0.000 claims abstract description 55
- 239000011178 precast concrete Substances 0.000 claims abstract description 49
- 238000010008 shearing Methods 0.000 claims abstract description 48
- 239000004567 concrete Substances 0.000 claims description 24
- 230000003014 reinforcing effect Effects 0.000 claims description 9
- 239000004570 mortar (masonry) Substances 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims description 6
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 3
- 230000003993 interaction Effects 0.000 claims description 3
- 239000011150 reinforced concrete Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000003313 weakening effect Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 239000002131 composite material Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Abstract
The utility model discloses a pressure-bearing-shearing type connecting piece, which is used for connecting a steel beam and a precast concrete plate and enabling the steel beam and the precast concrete plate to form an integrally stressed steel-precast concrete combined beam; the pressure-bearing and shearing type connecting piece consists of two shearing plates and two pressure-bearing plates; the steel beam is provided with a plurality of pressure-bearing and shearing type connecting pieces which are arranged along the axial direction of the steel beam according to the requirement of bearing capacity; the utility model has the beneficial technical effects that: the pressure-bearing and shearing type connecting piece can ensure effective connection of a connecting steel beam and a precast concrete plate, reduce the size of a preformed hole of the precast concrete plate, further reduce the weakening of the precast concrete plate, reduce the manufacturing difficulty of the precast concrete plate and reduce the workload of a construction site.
Description
Technical Field
The utility model relates to a steel member and precast concrete component connection technology especially relate to a pressure-bearing-shear type connecting piece.
Background
Compared with the steel-concrete structure adopting cast-in-place concrete, the steel-concrete structure adopting the precast concrete has the advantages of high construction speed, small field operation amount, stable and controllable quality and the like; in the prior art, a steel-precast concrete composite beam is a typical steel-concrete structure adopting precast concrete, wherein one of important factors determining the mechanical property of the steel-precast concrete composite beam is the connection effectiveness between a steel beam and a precast concrete slab; in order to realize effective connection between a steel beam and a precast concrete plate, a common connection mode is that a large number of pegs are arranged on the steel beam in a bundling mode, meanwhile, preformed holes in one-to-one correspondence with the pegs are arranged on the precast concrete plate, during construction, the pegs are inserted into the preformed holes in one-to-one correspondence, then concrete is poured into the preformed holes to realize connection of the steel beam and the precast concrete plate, the large preformed holes need to be arranged by adopting the connection mode, the concrete structure is obviously weakened, steel bars in the precast concrete plate need to be kept continuous at the preformed holes, and great inconvenience is brought to production of the precast concrete plate. The traditional profile steel connecting piece occupies a smaller space than the stud connecting piece arranged in a cluster, but has limited deformability, is brittle in a final failure state and is generally not accepted in engineering.
SUMMERY OF THE UTILITY MODEL
To the problem in the background art, the utility model provides a pressure-bearing-shear type connecting piece, its innovation lies in: the pressure-bearing and shearing type connecting piece is used for connecting the steel beam and the precast concrete plate and enabling the steel beam and the precast concrete plate to form an integrally stressed steel-precast concrete combined beam;
the cross section of the steel beam is I-shaped or groove-shaped; the precast concrete plate is a precast reinforced concrete structure body;
the pressure-bearing and shearing type connecting piece consists of two shearing plates and two pressure-bearing plates; the plane of the shear plate is vertical to the horizontal plane, the lower end of the shear plate is fixedly welded with the upper side face of the steel beam, the plane of the shear plate is parallel to the axial direction of the steel beam, the two shear plates are distributed along the transverse direction of the steel beam, and a gap is reserved between the two shear plates; the plane of the pressure bearing plate is vertical to the horizontal plane, the plane of the pressure bearing plate is vertical to the plane of the shearing plate, the two pressure bearing plates are axially distributed along the steel beam, the two pressure bearing plates are respectively positioned at the front side and the rear side of the shearing plate, and the edge of the shearing plate is welded and fixed with the pressure bearing plates; the middle part of the shear plate is provided with a through hole;
the steel beam is provided with a plurality of pressure-bearing and shearing type connecting pieces which are arranged along the axial direction of the steel beam according to the requirement of bearing capacity;
the precast concrete plate is provided with a preformed hole matched with the pressure-bearing and shearing type connecting piece, and the preformed hole and the internal reinforcing steel bar of the precast concrete plate are arranged in a staggered manner; the upper side surface of the steel beam is in contact with the lower side surface of the precast concrete plate, the plurality of pressure-bearing and shearing type connecting pieces are inserted into the plurality of reserved holes in a one-to-one correspondence manner, and then concrete or high-strength mortar is poured into the reserved holes; after the cast-in-place concrete or the high-strength mortar is cured, the pressure-bearing and shearing type connecting piece and the reserved hole are connected into a whole;
the sizes of the bearing plate and the shearing plate are adjustable; the bearing plate is used for dispersing the interaction force between the cast-in-place concrete and the bearing-shearing type connecting piece; the shear plate is used for bearing the shear force between the steel beam and the concrete.
The utility model discloses in, the pressure-bearing-shearing type connecting piece bears through the shearing mechanism, make pressure-bearing-shearing type connecting piece have higher rigidity in the elastic deformation stage, can satisfy the rigidity demand under the work load condition, and simultaneously, pressure-bearing-shearing type connecting piece also has better shear deformation ability in the plastic deformation stage, can avoid pressure-bearing-shearing type connecting piece brittle failure, in addition, the surface area of pressure-bearing-shearing type connecting piece is great, can play better dispersion effect to the load, improve the effect to the atress condition of prefabricated downthehole cast-in-place concrete, can be applicable to the cast-in-place concrete of low strength or lightweight aggregate, in addition, the through-hole at shear plate middle part is favorable to the flow of cast-in-place concrete, also can improve the resistance to plucking bearing capacity of structure simultaneously. Adopt the utility model discloses behind the scheme, because the bearing capacity of single pressure-bearing-shearing type connecting piece is great, a small amount of pressure-bearing-shearing type connecting pieces just can satisfy the connection requirement, can effectively reduce preformed hole quantity, reduce precast concrete slab's the preparation degree of difficulty, just also reduced the weakening effect to precast concrete slab simultaneously.
Preferably, the shear plate lower extreme is provided with the reinforcement wing, strengthens the wing and can prolong the welding seam length between shear plate and the girder steel.
Preferably, the reinforcing wing is provided with an arc chamfer for alleviating stress concentration. After the optimal scheme is adopted, the stress concentration can be reduced, and the fatigue performance can be improved.
Preferably, the welding strength of the shear plate and the connection steel beam is greater than the shear strength of the shear plate itself. After adopting this preferred scheme, during the structure atress, the shear plate destroys and can destroy the emergence earlier than the welding seam to avoid connecting piece brittle failure to take place.
The utility model has the beneficial technical effects that: the pressure-bearing and shearing type connecting piece can ensure effective connection of a connecting steel beam and a precast concrete plate, reduce the size of a preformed hole of the precast concrete plate, further reduce the weakening of the precast concrete plate, reduce the manufacturing difficulty of the precast concrete plate and reduce the workload of a construction site.
Drawings
FIG. 1 is a schematic view of a three-dimensional structure of a pressure-bearing shear-type connecting member and a steel beam;
FIG. 2 is a schematic cross-sectional view of a pressure-shear type connection member and a steel beam;
FIG. 3 is a schematic view of the structure of the longitudinal section of a pressure-shear type connecting member and a steel beam;
the names corresponding to each mark in the figure are respectively: shear plate 1, bearing plate 2, connecting beam 3, precast concrete board 4, prefabricated hole 5, longitudinal reinforcement 6, horizontal reinforcing bar 7.
Detailed Description
A pressure-bearing shear type connecting piece is innovative in that: the pressure-bearing and shearing type connecting piece is used for connecting the steel beam and the precast concrete plate and enabling the steel beam and the precast concrete plate to form an integrally stressed steel-precast concrete combined beam;
the cross section of the steel beam is I-shaped or groove-shaped; the precast concrete plate is a precast reinforced concrete structure body;
the pressure-bearing and shearing type connecting piece consists of two shearing plates 1 and two pressure-bearing plates 2; the plane of the shear plate 1 is vertical to the horizontal plane, the lower end of the shear plate 1 is fixedly welded with the upper side face of the steel beam, the plane of the shear plate 1 is parallel to the axial direction of the steel beam, the two shear plates 1 are distributed along the transverse direction of the steel beam, and a gap is reserved between the two shear plates 1; the plane of the pressure bearing plates 2 is vertical to the horizontal plane, the plane of the pressure bearing plates 2 is vertical to the plane of the shear plate 1, the two pressure bearing plates 2 are axially distributed along the steel beam, the two pressure bearing plates 2 are respectively positioned at the front side and the rear side of the shear plate 1, and the edge of the shear plate 1 is welded and fixed with the pressure bearing plates 2; the middle part of the shear plate 1 is provided with a through hole;
the steel beam is provided with a plurality of pressure-bearing and shearing type connecting pieces which are arranged along the axial direction of the steel beam according to the requirement of bearing capacity;
the precast concrete plate is provided with a preformed hole matched with the pressure-bearing and shearing type connecting piece, and the preformed hole and the internal reinforcing steel bar of the precast concrete plate are arranged in a staggered manner; the upper side surface of the steel beam is in contact with the lower side surface of the precast concrete plate, the plurality of pressure-bearing and shearing type connecting pieces are inserted into the plurality of reserved holes in a one-to-one correspondence manner, and then concrete or high-strength mortar is poured into the reserved holes; after the cast-in-place concrete or the high-strength mortar is cured, the pressure-bearing and shearing type connecting piece and the reserved hole are connected into a whole;
the sizes of the bearing plate 2 and the shear plate 1 are adjustable; the bearing plate 2 is used for dispersing the interaction force between the cast-in-place concrete and the bearing-shearing type connecting piece; the shear plate 1 is used for bearing the shearing force between the steel beam and the concrete.
Further, the lower end of the shear plate 1 is provided with a reinforcing wing, and the reinforcing wing can prolong the length of a welding seam between the shear plate 1 and a steel beam.
Further, the reinforcing wing is provided with an arc-shaped chamfer angle for relieving stress concentration.
Further, the welding strength of the shear plate 1 and the connection steel beam is greater than the shear strength of the shear plate 1 itself.
The utility model has the advantages of as follows: 1) the single pressure-bearing and shearing type connecting piece has large bearing capacity and small occupied space, can reduce the size of a preformed hole of the precast concrete plate, reduce the weakening of the precast concrete plate and reduce the manufacturing difficulty of the precast concrete plate; 2) the pressure-bearing and shearing type connecting piece has higher rigidity in the elastic stage, and can ensure that the combined structure has enough rigidity under the working load; 3) the pressure-bearing-shearing type connecting piece has good shearing deformation capacity in a plasticity stage, and brittle failure of the pressure-bearing-shearing type connecting piece can be avoided; 4) due to the dispersing effect of the bearing plate on the load, the local pressure load borne by the concrete is greatly reduced, so that the bearing-shearing type connecting piece can be suitable for low-strength concrete or light aggregate concrete; 5) the reinforcing wings arranged at the bottom of the shear plate can slow down stress concentration and enhance the fatigue resistance of the connecting piece; 6) the round hole formed in the top of the shear plate is beneficial to free flow of post-pouring mortar, the pouring quality is guaranteed, and the uplift bearing capacity can be increased; 7) the pressure-bearing and shear-type connecting piece has strong designability, and can flexibly match the materials, sizes and shapes of the shear plate and the pressure-bearing plate according to the use environment so as to realize different static and fatigue performances; 8) convenient material obtaining, simple structure, rapid construction, reasonable stress and good technical and economic benefits.
Claims (4)
1. A pressure-bearing shear type connecting piece is characterized in that: the pressure-bearing and shearing type connecting piece is used for connecting the steel beam and the precast concrete plate and enabling the steel beam and the precast concrete plate to form an integrally stressed steel-precast concrete combined beam;
the cross section of the steel beam is I-shaped or groove-shaped; the precast concrete plate is a precast reinforced concrete structure body;
the pressure-bearing and shear-type connecting piece consists of two shear plates (1) and two pressure-bearing plates (2); the plane of the shear plate (1) is vertical to the horizontal plane, the lower end of the shear plate (1) is fixedly welded with the upper side face of the steel beam, the plane of the shear plate (1) is parallel to the axial direction of the steel beam, the two shear plates (1) are distributed along the transverse direction of the steel beam, and a gap is reserved between the two shear plates (1); the plane of the pressure bearing plate (2) is vertical to the horizontal plane, the plane of the pressure bearing plate (2) is vertical to the plane of the shear plate (1), the two pressure bearing plates (2) are axially distributed along the steel beam, the two pressure bearing plates (2) are respectively positioned at the front side and the rear side of the shear plate (1), and the edge of the shear plate (1) is welded and fixed with the pressure bearing plates (2); the middle part of the shear plate (1) is provided with a through hole;
the steel beam is provided with a plurality of pressure-bearing and shearing type connecting pieces which are arranged along the axial direction of the steel beam according to the requirement of bearing capacity;
the precast concrete plate is provided with a preformed hole matched with the pressure-bearing and shearing type connecting piece, and the preformed hole and the internal reinforcing steel bar of the precast concrete plate are arranged in a staggered manner; the upper side surface of the steel beam is in contact with the lower side surface of the precast concrete plate, the plurality of pressure-bearing and shearing type connecting pieces are inserted into the plurality of reserved holes in a one-to-one correspondence manner, and then concrete or high-strength mortar is poured into the reserved holes; after the cast-in-place concrete or the high-strength mortar is cured, the pressure-bearing and shearing type connecting piece and the reserved hole are connected into a whole;
the sizes of the pressure bearing plate (2) and the shear plate (1) are adjustable; the bearing plate (2) is used for dispersing the interaction force between the cast-in-place concrete and the bearing-shearing type connecting piece; the shear plate (1) is used for bearing the shear force between the steel beam and the concrete.
2. A compression-shear type connection according to claim 1, wherein: the lower end of the shear plate (1) is provided with a reinforcing wing, and the reinforcing wing can prolong the length of a weld joint between the shear plate (1) and a steel beam.
3. A compression-shear type connection according to claim 2, wherein: the reinforcing wing is provided with an arc chamfer angle for relieving stress concentration.
4. A compression-shear type connection according to claim 1, 2 or 3, wherein: the welding strength of the shear plate (1) and the connecting steel beam is greater than the shearing strength of the shear plate (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920738334.7U CN210263430U (en) | 2019-05-22 | 2019-05-22 | Pressure-bearing shear type connecting piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920738334.7U CN210263430U (en) | 2019-05-22 | 2019-05-22 | Pressure-bearing shear type connecting piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210263430U true CN210263430U (en) | 2020-04-07 |
Family
ID=70025972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920738334.7U Withdrawn - After Issue CN210263430U (en) | 2019-05-22 | 2019-05-22 | Pressure-bearing shear type connecting piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210263430U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110067313A (en) * | 2019-05-22 | 2019-07-30 | 重庆交通大学 | Pressure-bearing-shearing-type connector |
| CN114673072A (en) * | 2022-03-28 | 2022-06-28 | 重庆交通大学 | Novel assembled shear connection device and process flow |
-
2019
- 2019-05-22 CN CN201920738334.7U patent/CN210263430U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110067313A (en) * | 2019-05-22 | 2019-07-30 | 重庆交通大学 | Pressure-bearing-shearing-type connector |
| CN110067313B (en) * | 2019-05-22 | 2024-04-26 | 重庆交通大学 | Pressure-bearing shearing type connecting piece |
| CN114673072A (en) * | 2022-03-28 | 2022-06-28 | 重庆交通大学 | Novel assembled shear connection device and process flow |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20200407 Effective date of abandoning: 20240426 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20200407 Effective date of abandoning: 20240426 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |