CN217203588U - Corrugated web UHPC-NC steel box concrete composite beam - Google Patents
Corrugated web UHPC-NC steel box concrete composite beam Download PDFInfo
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- CN217203588U CN217203588U CN202220175829.5U CN202220175829U CN217203588U CN 217203588 U CN217203588 U CN 217203588U CN 202220175829 U CN202220175829 U CN 202220175829U CN 217203588 U CN217203588 U CN 217203588U
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- steel
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- concrete composite
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 117
- 239000010959 steel Substances 0.000 title claims abstract description 117
- 239000004567 concrete Substances 0.000 title claims abstract description 85
- 239000002131 composite material Substances 0.000 title claims abstract description 58
- 238000005192 partition Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 4
- 238000005336 cracking Methods 0.000 abstract description 4
- 239000011374 ultra-high-performance concrete Substances 0.000 abstract description 4
- 201000010099 disease Diseases 0.000 abstract description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 abstract description 2
- 239000011150 reinforced concrete Substances 0.000 description 6
- 238000005452 bending Methods 0.000 description 5
- 238000005457 optimization Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
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Abstract
The utility model discloses a corrugated web UHPC-NC steel box concrete composite beam, which belongs to the technical field of bridge construction, and the technical proposal key point comprises a steel box concrete composite beam body, the steel box concrete composite beam body comprises a bridge deck, the left side and the right side of the bottom of the bridge deck are fixedly connected with steel beam upper flanges, the bottoms of the two steel beam upper flanges are fixedly connected with steel box beam side webs, the bottoms of the two steel box beam side webs are fixedly connected with steel box beam bottom plates, the cracking problem of the concrete bridge deck in a hogging moment area during the operation period of the composite beam is effectively reduced by adopting UHPC concrete with higher tensile strength, the economic and functional properties are improved compared with the traditional composite beam, the problems that the steel bottom plate in the hogging moment area of the existing steel box concrete bridge has large compressive stress, the concrete bridge deck in the hogging moment area is easy to crack and the stability is poor are solved, the structure stress is complicated and the construction cycle is longer, the later stage disease is many.
Description
Technical Field
The utility model relates to a bridge construction technical field, in particular to corrugated web UHPC-NC steel case concrete composite beam.
Background
The reinforced concrete beam is a beam made of reinforced concrete material. The reinforced concrete beam can be made into an independent beam, a beam-plate type floor system integrated with a reinforced concrete plate, or a single-layer or multi-layer frame integrated with the reinforced concrete column. The reinforced concrete beam has various forms, is the most basic bearing component in engineering structures such as house buildings, bridge buildings and the like, and has extremely wide application range.
The existing steel bottom plate of the hogging moment area of the steel box concrete bridge has large compressive stress, the concrete bridge deck plate of the hogging moment area is easy to crack, the stability is poor, the structural stress is complex, the construction period is long, and the diseases in the later period are more.
SUMMERY OF THE UTILITY MODEL
The utility model provides a to above problem, provide a wave form web UHPC-NC steel case concrete composite beam and solve above-mentioned problem.
The utility model discloses a realize like this, a wave form web UHPC-NC steel case concrete composite beam, including steel case concrete composite beam body, steel case concrete composite beam body includes the decking, the equal fixedly connected with girder steel top flange in the bottom left and right sides of decking, two the equal fixedly connected with steel case roof beam limit web in bottom on the girder steel top flange, two the bottom fixedly connected with steel case roof beam bottom plate of steel case roof beam limit web.
In order to reduce the hogging moment district concrete decking fracture problem during the composite beam operation, as the utility model discloses a wave form web UHPC-NC steel case concrete composite beam is preferred, the decking is UHPC-NC coincide panel in the 0.2L within range of fulcrum in the steel case concrete composite beam body, the decking is the NC panel in 0.6L within range of striding.
In order to strengthen the support performance and the intensity of steel case roof beam bottom plate department, as the utility model discloses a wave form web UHPC-NC steel case concrete composite beam is preferred, the vertical strength rib of up end fixedly connected with of steel case roof beam bottom plate.
In order to provide sufficient structure transverse rigidity, as the utility model discloses a wave form web UHPC-NC steel case concrete composite beam is preferred, steel case concrete composite beam body is being provided with the cross slab of a plurality of integral opening types with standard interval 3m in the same direction as the bridge, the decking bottom left and right sides all is provided with the cantilever supporting beam.
In order to reduce steel case roof beam bottom plate steel quantity by a wide margin, increase structural reliability and economic nature, as the utility model discloses a corrugated web UHPC-NC steel case concrete composite beam is preferred, steel case concrete composite beam body fulcrum both sides 0.2L within range infrabasal plate is provided with 25 cm's C60 filled concrete in the continuous beam, steel case roof beam bottom plate and concrete adopt the shear force nail to be connected.
For effectual transmission load, as the utility model discloses a wave form web UHPC-NC steel case concrete composite beam is preferred, steel case concrete composite beam body fulcrum incasement is filled C60 micro-expansion concrete in continuous beam, and the longitudinal width is 2.4m, all connect through the shear force nail between filling concrete and steel case beam bottom plate, steel case beam limit web and the diaphragm.
Compared with the prior art, the beneficial effects of the utility model are that:
the bridge deck is a UHPC-NC superposed deck within 0.2L of a fulcrum in the steel box concrete composite beam body, and is an NC deck within 0.6L of a span, and the UHPC concrete with higher tensile strength is adopted, so that the problem of cracking of the concrete bridge deck in a hogging moment area during the operation of the composite beam is effectively solved, and the economic efficiency and the functionality are improved compared with the traditional composite beam;
the steel box concrete composite beam body is provided with integral open type transverse clapboards at a standard interval of 3m along the bridge direction to provide enough structural transverse rigidity, the length of a transverse cantilever of a bridge deck is 2.5m, and a cantilever supporting beam is arranged at each transverse clapboard to assist the transverse stress of the bridge deck structure, so that the transverse bending resistance bearing capacity of a large cantilever structure is ensured;
the steel box concrete composite beam body is provided with 25cm of C60 filled concrete at the bottom plate within 0.2L range of two sides of the fulcrum in the continuous beam, the C60 filled concrete is taken as the common stress of the steel box beam bottom plate in the hogging moment area of the steel box beam, the steel box beam bottom plate is connected with the concrete by the shear nails, the steel consumption of the steel box beam bottom plate is greatly reduced, the structural reliability and the economical efficiency are improved, the filled concrete is connected with the steel box beam bottom plate, the steel box beam side web plates and the transverse partition plates by the shear nails, the load can be effectively transferred, and the steel consumption at the fulcrum is effectively reduced.
Drawings
FIG. 1 is a standard cross-sectional view of the composite beam of the present invention;
FIG. 2 is a cross-sectional view of the diaphragm plate of the present invention within the range of 0.2L of the middle pivot point;
FIG. 3 is a cross-sectional view of the cross-sectional plate of the present invention within 0.6L of the midspan;
in the figure, 1, a steel box concrete composite beam body; 2. a steel beam upper flange; 3. steel box girder edge webs; 4. a steel box girder bottom plate; 5. a diaphragm plate; 6. a cantilever support beam; 7. longitudinal rib; 8. a bridge deck.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In addition, in the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
Referring to fig. 1-3, a corrugated web UHPC-NC steel box concrete composite beam comprises a steel box concrete composite beam body 1, wherein the steel box concrete composite beam body 1 comprises a bridge deck 8, the left side and the right side of the bottom of the bridge deck 8 are fixedly connected with steel beam upper flanges 2, the bottoms of the two steel beam upper flanges 2 are fixedly connected with steel box beam side webs 3, and the bottoms of the two steel box beam side webs 3 are fixedly connected with a steel box beam bottom plate 4.
In this embodiment: the bridge structure is prefabricated in a segmented factory, and the high-strength bolt segments are assembled on site, so that the volume and the weight of a steel beam manufacturing segment are effectively reduced, the transportation is facilitated, the on-site hoisting and erection are facilitated, and the occupied time of a lane is reduced.
As a technical optimization scheme of the utility model, the 0.2L within range of fulcrum is UHPC-NC coincide panel in steel case concrete composite beam body 1 for decking 8, and decking 8 is the NC panel in 0.6L within range striding.
In this embodiment: the bridge deck 8 is a UHPC-NC laminated deck within the range of 0.2L of a fulcrum in the steel box concrete composite beam body 1, is an NC deck within the range of 0.6L of a span, and effectively reduces the problem of cracking of the concrete bridge deck in a hogging moment area during the operation of the composite beam by adopting UHPC concrete with higher tensile strength.
As a technical optimization scheme of the utility model, the up end fixedly connected with of steel box girder bottom plate 4 is vertical strength rib 7.
In this embodiment: the longitudinal strength ribs 7 effectively enhance the structural strength and the supporting performance of the steel box girder bottom plate 4.
As a technical optimization scheme of the utility model, steel case concrete composite beam body 1 is being provided with the cross slab 5 of a plurality of integral opening types with standard interval 3m in the same direction as the bridge, and 8 bottom left and right sides of decking all are provided with cantilever supporting beam 6.
In this embodiment: the steel box concrete composite beam body 1 is in the direction of the bridge with standard interval 3m set up integral opening type diaphragm 5 and provide sufficient structure lateral rigidity, 8 horizontal cantilever length of decking are 2.5m, set up the horizontal atress of 8 structures of supplementary decking of cantilever supporting beam 6 in 5 departments of every diaphragm, guarantee the horizontal bending resistance bearing capacity of big cantilever structure.
As a technical optimization scheme of the utility model, steel case concrete composite beam body 1 fulcrum both sides 0.2L within range infrabasal plate is provided with 25 cm's C60 filled concrete in continuous beam, and steel case roof beam bottom plate 4 adopts the shear force nail with the concrete to be connected.
In this embodiment: the steel box concrete composite beam body 1 is provided with 25cm of C60 filled concrete at the bottom plate within 0.2L range of two sides of a fulcrum in a continuous beam, the C60 filled concrete is used as a compressed steel bottom plate of a steel box beam hogging moment area to bear force together, the steel box beam bottom plate 4 is connected with concrete through shear nails, the steel consumption of the steel box beam bottom plate 4 is greatly reduced, and the structural reliability and the economical efficiency are improved.
As a technical optimization scheme of the utility model, steel case concrete composite beam body 1 is filled C60 micro-expansion concrete in the fulcrum incasement in continuous beam, and vertical width is 2.4m, all is connected through the shear force nail between filling concrete and steel case roof beam bottom plate 4, steel case roof beam limit web 3 and the cross slab 5.
In this embodiment: the filled concrete is connected with the steel box girder bottom plate 4, the steel box girder side web plate 3 and the diaphragm plate 5 through the shear nails, so that the load can be effectively transferred, and the steel consumption at the pivot point can be effectively reduced.
The utility model discloses a theory of operation and use flow: the bridge deck 8 is a UHPC-NC superposed deck within the range of 0.2L of a fulcrum in the steel box concrete composite beam body 1, and is an NC deck within the range of 0.6L of a span, the cracking problem of the concrete bridge deck in a negative bending moment area during the operation of the composite beam is effectively reduced by adopting UHPC concrete with higher tensile strength, compared with the traditional composite beam, the economy and the functionality are improved, the steel box concrete composite beam body 1 is provided with an integral open type transverse clapboard 5 at a standard interval of 3m along the bridge direction, the transverse cantilever length of the bridge deck 8 is 2.5m, a cantilever support beam 6 is arranged at each transverse clapboard 5 to assist the transverse stress of the structure of the bridge deck 8, the transverse bending resistance of a large cantilever structure is ensured, the C60 filled concrete with 25cm is arranged on the 0.2L range of the two side plates of the fulcrum in the steel box concrete composite beam body 1, and is used as a compressed steel bottom plate of the steel box beam to bear the common stress in the negative bending moment area, the steel box girder bottom plate 4 is connected with the concrete by the shear nails, so that the steel consumption of the steel box girder bottom plate 4 is greatly reduced, the structural reliability and the economical efficiency are improved, and the filled concrete is connected with the steel box girder bottom plate 4, the steel box girder side web plate 3 and the transverse partition plate 5 by the shear nails, so that the load can be effectively transmitted, and the steel consumption of the pivot is effectively reduced.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (6)
1. The utility model provides a corrugated web UHPC-NC steel case concrete composite beam, includes steel case concrete composite beam body (1), its characterized in that: the steel box concrete composite beam body (1) comprises a bridge deck plate (8), wherein the steel beam top flange (2) is fixedly connected to the left side and the right side of the bottom of the bridge deck plate (8), the bottom of the steel beam top flange (2) is fixedly connected with a steel box beam side web plate (3) and the bottom of the steel box beam side web plate (3) is fixedly connected with a steel box beam bottom plate (4).
2. The corrugated web UHPC-NC steel box concrete composite beam as claimed in claim 1, characterized in that: the bridge deck (8) is a UHPC-NC laminated deck in the range of 0.2L of a fulcrum in the steel box concrete composite beam body (1), and the bridge deck (8) is an NC deck in the range of 0.6L of a midspan.
3. The corrugated web UHPC-NC steel box concrete composite beam as claimed in claim 1, characterized in that: the upper end face of the steel box girder bottom plate (4) is fixedly connected with a longitudinal stiffening rib (7).
4. The corrugated web UHPC-NC steel box concrete composite beam as claimed in claim 1, wherein: the steel box concrete composite beam body (1) is provided with a plurality of integral open type diaphragm plates (5) with standard spacing 3m along the bridge direction, and cantilever supporting beams (6) are arranged on the left side and the right side of the bottom of the bridge deck (8).
5. The corrugated web UHPC-NC steel box concrete composite beam as claimed in claim 1, characterized in that: the steel box concrete composite beam is characterized in that 25cm of C60 filled concrete is arranged on the bottom plate of the steel box concrete composite beam body (1) within the range of 0.2L on two sides of the middle fulcrum of the continuous beam, and the steel box beam bottom plate (4) is connected with the concrete through shear nails.
6. The corrugated web UHPC-NC steel box concrete composite beam as claimed in claim 5, wherein: the steel box concrete composite beam body (1) is characterized in that C60 micro-expansion concrete is filled in a fulcrum box of the continuous beam, the longitudinal width of the beam body is 2.4m, and the filled concrete is connected with a steel box beam bottom plate (4), a steel box beam side web plate (3) and a transverse partition plate (5) through shear nails.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220175829.5U CN217203588U (en) | 2022-01-21 | 2022-01-21 | Corrugated web UHPC-NC steel box concrete composite beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220175829.5U CN217203588U (en) | 2022-01-21 | 2022-01-21 | Corrugated web UHPC-NC steel box concrete composite beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217203588U true CN217203588U (en) | 2022-08-16 |
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ID=82793484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220175829.5U Expired - Fee Related CN217203588U (en) | 2022-01-21 | 2022-01-21 | Corrugated web UHPC-NC steel box concrete composite beam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217203588U (en) |
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2022
- 2022-01-21 CN CN202220175829.5U patent/CN217203588U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220816 |
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| CF01 | Termination of patent right due to non-payment of annual fee |