CN220813411U - Ultra-high performance concrete beam - Google Patents
Ultra-high performance concrete beam Download PDFInfo
- Publication number
- CN220813411U CN220813411U CN202322548264.8U CN202322548264U CN220813411U CN 220813411 U CN220813411 U CN 220813411U CN 202322548264 U CN202322548264 U CN 202322548264U CN 220813411 U CN220813411 U CN 220813411U
- Authority
- CN
- China
- Prior art keywords
- steel
- concrete beam
- ultra
- high performance
- plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000011374 ultra-high-performance concrete Substances 0.000 title claims abstract description 28
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 90
- 239000010959 steel Substances 0.000 claims abstract description 90
- 239000004567 concrete Substances 0.000 claims abstract description 28
- 238000005520 cutting process Methods 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 13
- 238000000034 method Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 3
- 238000005336 cracking Methods 0.000 description 7
- 210000002435 tendon Anatomy 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000003763 carbonization Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000002079 cooperative effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Rod-Shaped Construction Members (AREA)
Abstract
The utility model discloses an ultra-high performance concrete beam, which comprises a concrete beam body and a steel plate component, wherein the lower part of a web plate of the concrete beam body is provided with a horseshoe beam, the steel plate component comprises a steel plate and a plurality of steel tenon plates arranged on the steel plate, the steel plate is arranged at the bottom of the horseshoe beam along the length direction of the horseshoe beam, and the steel tenon plates are anchored into the horseshoe beam. The method has the advantages of improving the crack resistance, simplifying the construction process and improving the construction efficiency.
Description
Technical Field
The utility model relates to the technical field of bridge engineering, in particular to an ultra-high performance concrete beam.
Background
The current application situation of the concrete beam bridge shows that the defects of beam body cracking, seam water leakage, concrete carbonization and the like of the concrete beam are caused due to the insufficient tensile property and poor durability of common concrete, so that the safety of a bridge structure is seriously affected, and on the other hand, the concrete beam has large self weight and high hoisting difficulty, and in addition, the prestressed tendons are often tensioned in the concrete beam to exert prestress on the concrete beam in order to improve the bearing capacity and the cracking resistance of the concrete beam.
The ultra-high performance concrete (UHPC for short) is a novel fiber reinforced cement-based composite material, has excellent mechanical property, durability and working performance, and good ductility and toughness after cracking, and can well make up the defects of common concrete. However, when the UHPC is used for a middle-span and small-span girder bridge, for the middle-span UHPC girder bridge, prestressed tendons are needed to meet the requirements of rigidity and bearing capacity, on one hand, the thickness of a web plate of the UHPC girder needs to be increased, and on the other hand, the procedures of tensioning, grouting and the like of the prestressed tendons are complex and tedious, and the construction period is long.
Disclosure of utility model
The utility model aims to solve the technical problem of overcoming the defects of the prior art and providing the ultra-high performance concrete beam which has the advantages of improving the crack resistance, simplifying the construction process and improving the construction efficiency.
In order to solve the technical problems, the utility model adopts the following technical scheme:
The utility model provides an ultra-high performance concrete beam, includes concrete beam body and steel sheet subassembly, the web lower part of concrete beam body sets up to the horseshoe roof beam, the steel sheet subassembly includes the steel sheet and sets up a plurality of steel tenon boards on the steel sheet, the steel sheet is followed horseshoe roof beam length direction sets up in its bottom, the steel tenon board anchors in the horseshoe roof beam.
As a further improvement of the above technical scheme:
The steel tenon plate is provided with a preformed hole.
And steel bars are placed in the reserved holes.
And the steel tenon plate is welded with a shearing force piece.
The steel plate assembly is formed by welding steel plates.
The steel plate assembly is formed by cutting hot rolled H-shaped steel.
The section of the concrete beam body is T-shaped or pi-shaped.
The steel tenon plate is set to be a rectangular plate or a wedge plate or a round angle wedge plate.
Compared with the prior art, the utility model has the advantages that:
According to the concrete beam body, the ultra-high performance concrete is adopted, so that the dead weight is obviously reduced, the hoisting difficulty is reduced, the construction is convenient, the anti-cracking performance of the lower edge of the web is greatly improved by arranging the steel plate at the bottom of the web, the cracking risk is reduced, the bearing capacity of the ultra-high performance concrete beam is improved, the prestressed tendons are not required to be arranged in the web, the construction process is simplified, the construction difficulty is reduced, the construction efficiency is improved, in addition, the lower part of the web is arranged as the horseshoe beam, the stressed section is increased on the premise that the integral thickness of the web is not increased, and sufficient space is provided for the arrangement of steel plate components.
Drawings
Fig. 1 is a schematic overall structure of embodiment 1 of the present utility model.
FIG. 2 is a schematic drawing showing the cutting of a hot rolled H-steel in example 1 of the present utility model.
Fig. 3 is a schematic view of the structure of a steel sheet assembly according to embodiment 1 of the present utility model.
Fig. 4 is a cross-sectional view of fig. 3.
Fig. 5 is a schematic view showing the structure of a steel sheet assembly according to embodiment 2 of the present utility model.
Fig. 6 is a cross-sectional view of fig. 5 (with rebar placed).
FIG. 7 is a schematic drawing showing the cutting of a hot rolled H-section steel according to example 3 of the present utility model.
Fig. 8 is a schematic view showing the structure of a steel sheet assembly according to embodiment 3 of the present utility model.
FIG. 9 is a cross-sectional view of FIG. 8 (welded shear).
The reference numerals in the drawings denote:
1. A concrete beam body; 11. a horseshoe beam; 2. a steel plate assembly; 21. a steel plate; 22. a steel tenon plate; 221. a preformed hole; 3. reinforcing steel bars; 4. and a shear member.
Detailed Description
The utility model will be described in further detail with reference to the drawings and the specific examples.
Example 1:
As shown in fig. 1 to 4, a first embodiment of the ultra-high performance concrete beam of the present utility model comprises a concrete beam body 1 and a steel plate assembly 2, wherein the lower part of a web of the concrete beam body 1 is provided as a horseshoe beam 11, the steel plate assembly 2 comprises a steel plate 21 and a plurality of steel tenon plates 22 provided on the steel plate 21, the steel plate 21 is provided at the bottom of the horseshoe beam 11 along the length direction thereof, and the steel tenon plates 22 are anchored into the horseshoe beam 11. Compared with the traditional concrete beam, the concrete beam body 1 of the utility model adopts ultra-high performance concrete, thereby remarkably reducing dead weight, reducing hoisting difficulty and facilitating construction, the steel plate 21 is arranged at the bottom of the horseshoe beam 11, improving the bending bearing capacity of the concrete beam body 1, ensuring the cooperative stress of the concrete beam body 1 and the steel plate 21 through the longitudinal shearing resistance provided by the steel tenon plate 22, reducing the slippage between the interface of the concrete beam body 1 and the steel plate 21 under the action of bending moment, enabling the steel plate 21 to exert constraint strengthening effect, limiting the initiation and expansion of cracks at the lower edge of the horseshoe beam 11, greatly improving the cracking resistance of the lower edge of the web, reducing the cracking risk, simplifying construction procedures, reducing the construction difficulty, improving the construction efficiency, and in addition, arranging the lower part of the web as the horseshoe beam 11, increasing the stress section and providing enough space for the arrangement of the steel plate assembly 2 on the premise of not increasing the whole thickness of the web.
In this embodiment, the tenon plate 22 is provided with a preformed hole 221. In the structure, the steel tenon plate 22 is provided with the reserved holes 221, when the horseshoe beam 11 is poured, UHPC grouting material can flow into the reserved holes 221 to form UHPC tenons, and the cooperative action of the horseshoe beam 11 and the steel plate assembly 2 is improved through the mechanical engagement action of the UHPC tenons and the steel tenon plate 22, so that the shearing resistance is enhanced.
In this embodiment, the steel sheet assembly 2 is cut from hot rolled H-section steel. The existing industrial product H-shaped steel is fully utilized, the H-shaped steel is cut and split to form the steel plate assembly 2, the steel tenon plate 22 and the steel plate 21 are not required to be welded and connected, and the H-shaped steel is simple in manufacture and low in cost.
In this embodiment, the concrete beam body 1 has a T-shaped cross-section. The structure is simple, and in other embodiments, the cross-sectional shape of the concrete beam body 1 can also be pi-shaped.
In this embodiment, the steel tongue plate 22 is provided as a wedge plate. The structure is simple and the molding is easy.
Example 2:
As shown in fig. 5 to 6, the second embodiment of the ultra-high performance concrete girder of the present utility model is substantially the same as embodiment 1, except that:
In this embodiment, the reinforcing bars 3 are placed in the preformed holes 221. In this embodiment, the steel bars 3 may be straight bars, and in other embodiments, may be L-shaped or U-shaped steel bars, in which the steel bars 3 are placed in the preformed holes 221 of the tenon plates 22 in the same row, so that the cooperative stress effect of the steel plate assembly 2 and the horseshoe beam 11 is improved, and thus the crack resistance is improved.
In this embodiment, the steel plate assembly 2 is welded from steel sheet material. In this structure, the steel plate component 2 is formed by welding and fixing a plurality of steel tenon plates 22 on a steel plate 21, the width of the steel plate 21 is consistent with the width of the bottom of the horseshoe beam 11, the distance between the steel tenon plates 22 is determined according to the stress condition of the structure, each steel tenon plate 22 is an independent single body, the design and arrangement are flexible, in this embodiment, two rows of steel tenon plates 22 are welded on the steel plate 21, in other embodiments, single row or multiple rows of steel tenon plates 22 can be arranged according to the stress condition.
In the present embodiment, the tenon plate 22 is provided as a rectangular plate. The structure is simple and the molding is easy.
Example 3:
As shown in fig. 7 to 9, the third embodiment of the ultra-high performance concrete girder of the present utility model is basically the same as embodiment 1, except that:
In this embodiment, the shear member 4 is welded to the tongue plate 22. In this configuration, the shear member 4 is configured as a peg, and the peg is welded to the tongue plate 22, thereby further improving the cooperative stressing ability of the steel plate assembly 2 and the horseshoe beam 11, and improving the crack resistance of the overall structure, and in other embodiments, the steel bar 3 may be placed in the preformed hole 221 while the shear member 4 is welded to the tongue plate 22.
In this embodiment, the steel tongue plate 22 is provided with a rounded wedge plate. The steel tenon plate is simple in structure and easy to form, sharp parts are eliminated by the round angle wedge plate, stress concentration is prevented from being generated at the contact part of the steel tenon plate 22 and the horseshoe beam 11, the risk of premature damage of the structure is reduced, the steel tenon plate 22 and the horseshoe beam 11 have good stress performance, and the safety of the structure is improved.
While the utility model has been described in terms of preferred embodiments, it is not intended to be limiting. Many possible variations and modifications of the disclosed technology can be made by anyone skilled in the art, or equivalent embodiments with equivalent variations can be made, without departing from the scope of the utility model. Therefore, any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present utility model shall fall within the scope of the technical solution of the present utility model.
Claims (8)
1. An ultra-high performance concrete beam, which is characterized in that: including concrete beam body (1) and steel sheet subassembly (2), the web lower part of concrete beam body (1) sets up to horseshoe beam (11), steel sheet subassembly (2) include steel sheet (21) and set up a plurality of tenon board (22) on steel sheet (21), steel sheet (21) are followed horseshoe beam (11) length direction sets up in its bottom, in tenon board (22) anchor horseshoe beam (11).
2. The ultra-high performance concrete beam of claim 1, wherein: the steel tenon plate (22) is provided with a preformed hole (221).
3. The ultra-high performance concrete beam of claim 2, wherein: reinforcing steel bars (3) are placed in the reserved holes (221).
4. The ultra-high performance concrete beam of claim 1, wherein: shear members (4) are welded on the steel tenon plates (22).
5. The ultra-high performance concrete beam of claim 1, wherein: the steel plate assembly (2) is formed by welding steel plates.
6. The ultra-high performance concrete beam of claim 1, wherein: the steel plate assembly (2) is formed by cutting hot rolled H-shaped steel.
7. The ultra-high performance concrete beam of claim 1, wherein: the section of the concrete beam body (1) is T-shaped or pi-shaped.
8. The ultra-high performance concrete beam of claim 1, wherein: the steel tenon plate (22) is arranged as a rectangular plate or a wedge plate or a round angle wedge plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322548264.8U CN220813411U (en) | 2023-09-19 | 2023-09-19 | Ultra-high performance concrete beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322548264.8U CN220813411U (en) | 2023-09-19 | 2023-09-19 | Ultra-high performance concrete beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220813411U true CN220813411U (en) | 2024-04-19 |
Family
ID=90708618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322548264.8U Active CN220813411U (en) | 2023-09-19 | 2023-09-19 | Ultra-high performance concrete beam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220813411U (en) |
-
2023
- 2023-09-19 CN CN202322548264.8U patent/CN220813411U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113216484B (en) | Steel-concrete composite beam connection structure and design calculation method | |
| CN112012091A (en) | UHPC-NC mixed box girder, large-span rigid frame bridge and construction method thereof | |
| CN111549658A (en) | Continuous bridge joint structure and continuous box girder bridge structure | |
| CN113047161A (en) | Joint structure of NC-UHPC (numerical control-ultra high-performance polycarbonate) hybrid rigid frame bridge, hybrid rigid frame bridge and construction method of hybrid rigid frame bridge | |
| CN110409283B (en) | Rib-free prestressed self-maintenance composite beam based on slow-bonding prestressed UHPC permanent formwork and construction method | |
| CN114411975B (en) | Structure of composite bolting shear key | |
| CN111021227B (en) | Steel-concrete composite structure continuous box girder and manufacturing method thereof | |
| KR100883809B1 (en) | Structure for installing shear connector of steel concrete rahmen type complex integral bridge | |
| CN212404773U (en) | UHPC-NC mixed box girder and large-span rigid frame bridge | |
| CN110409282B (en) | Non-web-rib prestressed self-maintenance composite beam based on permanent post-tensioned prestressed UHPC (ultra high performance concrete) nested template and construction method | |
| CN220813411U (en) | Ultra-high performance concrete beam | |
| CN110331648B (en) | Ultra-high-performance concrete-part section steel composite beam unit, ultra-high-performance concrete-section steel composite beam unit and composite beam | |
| CN109356034A (en) | A kind of mixed composite continuous bridge superstructure system of vertically and horizontally Prestressed CFRP concrete steel | |
| CN117266001A (en) | Ultra-high performance concrete beam and construction method thereof | |
| CN114622485A (en) | Pier top cast-in-place joint structure adopting embedded steel plate strips and construction method thereof | |
| CN211256620U (en) | Assembled combination case roof beam | |
| CN112609637B (en) | Prestressing force reinforced structure of aqueduct body | |
| CN212561138U (en) | Continuous bridge joint structure and continuous box girder bridge structure | |
| CN211665535U (en) | T-beam structure for high-speed railway long-span bridge and long-span bridge | |
| CN210621439U (en) | Combined beam unit and combined beam | |
| CN211621164U (en) | Semi-fabricated large-span combined box girder | |
| CN214656267U (en) | T-beam prefabricated steel pedestal | |
| CN217733723U (en) | Complete pressure-bearing type steel-concrete combined structure for hybrid beam | |
| CN213571602U (en) | Reinforced structure for enhancing shearing-resistant bearing capacity of box beam | |
| CN218813128U (en) | Steel-concrete combined structure for cable-stayed bridge with double-side I-steel mixed beams |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |