CN220184435U - Novel UHPC-HPC gradient durability combined T beam - Google Patents
Novel UHPC-HPC gradient durability combined T beam Download PDFInfo
- Publication number
- CN220184435U CN220184435U CN202320590359.3U CN202320590359U CN220184435U CN 220184435 U CN220184435 U CN 220184435U CN 202320590359 U CN202320590359 U CN 202320590359U CN 220184435 U CN220184435 U CN 220184435U
- Authority
- CN
- China
- Prior art keywords
- steel
- fiber
- tension
- compression
- durability
- 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
- 239000000835 fiber Substances 0.000 claims abstract description 37
- 230000006835 compression Effects 0.000 claims abstract description 29
- 238000007906 compression Methods 0.000 claims abstract description 29
- 239000002131 composite material Substances 0.000 claims abstract description 27
- 239000004574 high-performance concrete Substances 0.000 claims abstract description 20
- 239000011374 ultra-high-performance concrete Substances 0.000 claims abstract description 18
- 229910000975 Carbon steel Inorganic materials 0.000 claims abstract description 11
- 239000010962 carbon steel Substances 0.000 claims abstract description 11
- 238000007788 roughening Methods 0.000 claims description 11
- 229920002748 Basalt fiber Polymers 0.000 claims description 6
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 6
- 229920006231 aramid fiber Polymers 0.000 claims description 6
- 239000004917 carbon fiber Substances 0.000 claims description 6
- 239000003365 glass fiber Substances 0.000 claims description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 9
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 239000011150 reinforced concrete Substances 0.000 description 8
- 238000005553 drilling Methods 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011372 high-strength concrete Substances 0.000 description 1
- 238000009440 infrastructure construction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Rod-Shaped Construction Members (AREA)
Abstract
The utility model relates to a novel UHPC-HPC gradient durability combined T beam, which belongs to the technical field of buildings and comprises a compression beam and a tension beam which are made of ultra-high performance concrete materials, wherein a beam made of high performance concrete materials is arranged between the compression beam and the tension beam; the compression beam, the tension beam and the cross beam are internally provided with fiber grids for connecting the compression beam, the tension beam and the cross beam; carbon steel bars are arranged in the compression beam, steel-fiber composite bars are arranged in the tension beam, and the carbon steel bars and the steel-fiber composite bars are positioned in the fiber grid. The compression beam adopts ultra-high performance concrete (UHPC) material and carbon steel to bear pressure, and the ultra-high performance concrete (UHPC) in a tension area and the steel-fiber composite rib cooperate together, so that the tensile strength of the beam can be improved, the durability of the combined T beam can be greatly improved, the dead weight of the beam can be lightened, the compression beam has the characteristics of high strength, good crack resistance, strong durability and excellent economy, has better practicability and environmental friendliness, and can effectively solve the problem of poor durability and crack resistance of the traditional beam.
Description
Technical Field
The utility model belongs to the technical field of buildings, and particularly relates to a novel UHPC-HPC gradient durability combined T beam.
Background
Ultra-high performance concrete is an Ultra-high performance concrete cement-based composite material, and has better ductility and higher tensile strength and compressive strength compared with common high-strength concrete. Since the concept of ultra-high performance concrete (UHPC), its ultra-high mechanical properties and excellent durability have attracted close attention from the engineering material field. The advantages are remarkable, so that the method has great application prospect in the fields of bridges, tunnels, railway engineering, prefabricated building and the like.
Along with the development of the building industry in China, more and more novel building materials are applied to infrastructure construction, a reinforced concrete structure is still used as a building structure with the largest usage amount, and China is in the stage of repairing and reforming the reinforced concrete structure. With the increase of service life or the damage of the reinforced concrete structure caused by external physical and chemical reasons, the reliability of the reinforced concrete structure is reduced, the reinforced concrete structure can not continue to bear safely, the damage of the reinforced concrete structure can endanger social public safety, and the repair cost of the reinforced concrete structure is also a great economic expenditure. Breakage of the reinforced concrete structure is a serious problem for any country. In order to effectively solve the problem, ensure that the repaired structure has normal bearing capacity, prolong the interval time of the next repair, minimize the economic expenditure, and find a repair material with excellent mechanical property and durability to complete the task, the method is very important. Compared with the traditional materials, the ultra-high performance concrete is improved to a great extent in the aspects of strength, toughness, durability and the like, has excellent wear resistance, antiknock performance and lighter structural weight, and even has a certain self-repairing function.
Disclosure of Invention
The utility model provides a novel UHPC-HPC gradient durability combined T beam, which is provided with a steel-fiber composite rib in a beam tension area, so that the durability of the combined T beam can be greatly improved, the dead weight of the beam is lightened, and the advantages of high strength, good crack resistance, strong durability, excellent economy and the like are realized.
In order to achieve the above purpose, the utility model is realized by the following technical scheme:
the novel UHPC-HPC gradient durability combined T beam comprises a compression beam and a tension beam which are made of ultra-high performance concrete materials, wherein a beam made of high performance concrete materials is arranged between the compression beam and the tension beam; the compression beam, the tension beam and the cross beam are internally provided with fiber grids for connecting the compression beam, the tension beam and the cross beam; carbon steel bars are arranged in the compression beam, steel-fiber composite bars are arranged in the tension beam, and the carbon steel bars and the steel-fiber composite bars are positioned in the fiber grid.
Furthermore, a compression zone roughening layer is arranged above the cross beam, and a tension zone roughening layer is arranged above the tensile beam.
Further, the distance from the roughening layer of the tension zone to the uppermost steel-fiber composite bar is 20-25mm.
Further, the steel-fiber composite bar is any one of steel-basalt fiber bar, steel-carbon fiber bar, steel-glass fiber bar and steel-aramid fiber bar.
Further, the fiber mesh is any one of basalt fiber mesh, carbon fiber mesh, glass fiber mesh and aramid fiber mesh.
Further, the cross section of the fiber mesh is rectangular.
The utility model has the beneficial effects that:
the compression beam adopts ultra-high performance concrete (UHPC) material and carbon steel to bear pressure, and the ultra-high performance concrete (UHPC) in a tension area and the steel-fiber composite rib cooperate together, so that the tensile strength of the beam can be improved, the durability of the combined T beam can be greatly improved, and the dead weight of the beam can be lightened. The utility model has the characteristics of high strength, good crack resistance, strong durability and excellent economy, meets the economic development requirement of green buildings, has better practicability and environmental protection, and can effectively solve the problem of poor durability and crack resistance of the traditional beam.
Drawings
FIG. 1 is a schematic cross-sectional structure of the present utility model;
FIG. 2 is a schematic view of the structure of a fiber mesh in the present utility model;
FIG. 3 is a schematic view of the structure of the steel-fiber composite bar according to the present utility model;
fig. 4 is a schematic vertical cross-section of the present utility model.
In the figure, 1-1, a tensile beam; 1-2, a compression beam; 1-3, roughening the layer in the pressed region; 1-4, roughening the layer in the tension area; 2. a cross beam; 3. carbon steel bar; 4. steel-fiber composite bars; 4-1, ribbed steel bars; 4-2, dipping fiber bundles; 5. a fiber mesh.
Detailed Description
In order to make the objects, technical solutions and advantageous effects of the present utility model more apparent, preferred embodiments of the present utility model will be described in detail below to facilitate understanding by the skilled person.
In the first embodiment, referring to fig. 1-4, a novel UHPC-HPC gradient durability combined T-beam comprises a compression beam 1-2 made of ultra-high performance concrete and a tension beam 1-1, wherein the compression strength of ultra-high performance concrete (UHPC) of the compression beam 1-2 is 120-200MPa, the tensile strength of ultra-high performance concrete (UHPC) of the tension beam 1-1 is 5-14MPa, a cross beam 2 made of High Performance Concrete (HPC) is arranged between the compression beam 1-2 and the tension beam 1-1, and the compression strength of the High Performance Concrete (HPC) of the cross beam 2 is 50-80MPa; the compression beam 1-2, the tension beam 1-1 and the cross beam 2 are internally provided with fiber grids 5 for connecting the three; the compression beam 1-2 is internally provided with carbon steel 4 bars, the tension beam 1-1 is internally provided with steel-fiber composite bars 4, the carbon steel 3 and the steel-fiber composite bars 4 are positioned in a fiber grid 5, and the cross section of the fiber grid 5 is rectangular.
The steel-fiber composite bar 4 can be any one of steel-basalt fiber bar, steel-carbon fiber bar, steel-glass fiber bar and steel-aramid fiber bar, and the steel content of the steel-fiber composite bar 4 is 20% -65%.
The fiber mesh 5 may be any one of basalt fiber mesh, carbon fiber mesh, glass fiber mesh, and aramid fiber mesh.
The upper part of the cross beam 2 is provided with a compression zone roughening layer 1-3, the upper part of the tensile zone roughening layer 1-4 is arranged above the tensile beam 1-1, and the distance from the tensile zone roughening layer 1-4 to the uppermost layer steel 4-fiber composite bar-is 20-25mm.
Embodiment two, a novel UHPC-HPC gradient durability combined T beam manufacturing method:
firstly pouring a pulled beam 1-1, in 30-45 minutes after pouring, drilling a rough layer 1-4 in a tension area with the surface drilling width and depth of 10-20mm on the surface of the incompletely solidified ultrahigh-performance concrete pulled beam 1-1, wherein the spacing between adjacent pits in the rough layer 1-4 in the tension area is 1.5-3 times of the drilling width, pouring a beam 2 made of high-performance concrete after the initial solidification of the ultrahigh-performance concrete pulled beam 1-1, and in 30-60 minutes after the pouring of the high-performance concrete beam 2 is finished, and pouring the ultrahigh-performance concrete pressed beam 1-2 until the pouring of the beam is finished after the initial solidification of the ultrahigh-performance concrete beam 2, wherein the spacing between adjacent pits in the pressed area with the drilling layer 1-4 is 1.5-3 times of the drilling width on the surface drilling width and depth of 10-20mm on the surface drilling layer 1-4.
Finally, it is noted that the above-mentioned preferred embodiments illustrate rather than limit the utility model, and that, although the utility model has been described in detail with reference to the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the utility model as defined by the appended claims.
Claims (6)
1. A novel UHPC-HPC gradient durability composite T-beam, characterized in that: the beam comprises a compression beam and a tension beam which are made of ultra-high performance concrete, wherein a beam made of high performance concrete is arranged between the compression beam and the tension beam; the compression beam, the tension beam and the cross beam are internally provided with fiber grids for connecting the compression beam, the tension beam and the cross beam; carbon steel bars are arranged in the compression beam, steel-fiber composite bars are arranged in the tension beam, and the carbon steel bars and the steel-fiber composite bars are positioned in the fiber grid.
2. A novel UHPC-HPC gradient durability composite T-beam according to claim 1, characterized in that: and a compression zone roughening layer is arranged above the cross beam, and a tension zone roughening layer is arranged above the tensile beam.
3. A novel UHPC-HPC gradient durability composite T-beam according to claim 2, characterized in that: the distance from the roughening layer of the tension zone to the uppermost steel-fiber composite bar is 20-25mm.
4. A novel UHPC-HPC gradient durability composite T-beam according to claim 1, characterized in that: the steel-fiber composite rib is any one of steel-basalt fiber rib, steel-carbon fiber rib, steel-glass fiber rib and steel-aramid fiber rib.
5. A novel UHPC-HPC gradient durability composite T-beam according to claim 1, characterized in that: the fiber mesh is any one of basalt fiber mesh, carbon fiber mesh, glass fiber mesh and aramid fiber mesh.
6. A novel UHPC-HPC gradient durability composite T-beam according to claim 1, characterized in that: the cross section of the fiber grid is rectangular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320590359.3U CN220184435U (en) | 2023-03-23 | 2023-03-23 | Novel UHPC-HPC gradient durability combined T beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320590359.3U CN220184435U (en) | 2023-03-23 | 2023-03-23 | Novel UHPC-HPC gradient durability combined T beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220184435U true CN220184435U (en) | 2023-12-15 |
Family
ID=89107706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320590359.3U Active CN220184435U (en) | 2023-03-23 | 2023-03-23 | Novel UHPC-HPC gradient durability combined T beam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220184435U (en) |
-
2023
- 2023-03-23 CN CN202320590359.3U patent/CN220184435U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109190194B (en) | Reinforcement calculation method for UHPC flexural member | |
| CN104563389A (en) | High-strength reinforced and functionally-graded concrete beam | |
| CN104018620A (en) | Sea sand concrete bending member | |
| CN112227200B (en) | Non-stud toughness combined bridge deck system | |
| CN112227199B (en) | Toughness combined bridge deck plate composed of cold-bending Z-shaped steel | |
| CN108868819B (en) | A kind of BFRP-ECC concrete shield duct piece and shield tunnel | |
| CN105064408A (en) | Ultra-high performance concrete manhole cover | |
| CN212153086U (en) | Concrete combined pier column | |
| CN204589815U (en) | Prefabricated assembled FRP-steel-concrete combined bridge deck | |
| CN220184435U (en) | Novel UHPC-HPC gradient durability combined T beam | |
| CN104314003A (en) | Long-life reinforcing mesh flexible fiber reinforced concrete bridge deck pavement structure | |
| CN112195778B (en) | Toughness combination bridge deck plate composed of T-shaped steel | |
| CN211774800U (en) | Tibetan rubble wall body | |
| CN116517186A (en) | Novel UHPC-HPC gradient durability combined T beam and preparation method thereof | |
| CN213805251U (en) | Ultra-high performance concrete-common concrete composite gravity dam | |
| CN105089077A (en) | Compound well cover of ultra-high performance concrete honeycomb structure and method for manufacturing compound well cover | |
| CN205046586U (en) | Ultra high performance concrete manhole cover | |
| CN104328735B (en) | Regeneration concrete Z-type pier stud | |
| CN112921802A (en) | Profiled steel sheet-ultra-high toughness concrete combined bridge deck | |
| CN204238123U (en) | A kind of triangular form section steel pipe regeneration concrete pier stud | |
| CN112878192A (en) | Assembled steel-ultra-high toughness concrete combined bridge deck | |
| Wang et al. | Research progress basalt fiber in civil engineering | |
| Wei et al. | Mechanical Characteristics of Cracked Lining Reinforced with Steel Plate–UHPC Subjected to Vertical Load | |
| CN215405593U (en) | Profiled steel sheet high-toughness combined bridge floor | |
| CN204139053U (en) | T-shaped section steel pipe regeneration concrete pier shaft |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |