CN219752964U - HUPC combination box girder - Google Patents
HUPC combination box girder Download PDFInfo
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- CN219752964U CN219752964U CN202223332390.1U CN202223332390U CN219752964U CN 219752964 U CN219752964 U CN 219752964U CN 202223332390 U CN202223332390 U CN 202223332390U CN 219752964 U CN219752964 U CN 219752964U
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- box girder
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- 239000007787 solid Substances 0.000 claims abstract description 35
- 238000005452 bending Methods 0.000 claims abstract description 25
- 239000011374 ultra-high-performance concrete Substances 0.000 claims abstract description 22
- 238000000926 separation method Methods 0.000 claims abstract description 8
- 239000002131 composite material Substances 0.000 claims description 11
- 238000004873 anchoring Methods 0.000 abstract description 11
- 230000002159 abnormal effect Effects 0.000 abstract description 8
- 238000010276 construction Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000004567 concrete Substances 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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Abstract
The utility model discloses a HUPC combined box girder, which comprises a bridge deck, a trapezoid frame, a special-shaped solid web girder and a UHPC base which are sequentially arranged from top to bottom; the trapezoid frame comprises an upper top plate and a pair of bending parts, and the pair of bending parts are symmetrically arranged on two sides of the lower part of the upper top plate; the special-shaped solid web beam is arranged between the pair of bending parts, the special-shaped solid web beam comprises a special-shaped inner beam and a special-shaped outer beam sleeved outside the special-shaped inner beam, an annular space is arranged between the special-shaped outer beam and the special-shaped inner beam, a plurality of rib plates are arranged along the circumferential direction of the annular space, the annular space is divided into a plurality of separation cavities, two ends of a prestress rope penetrate through the separation cavities and are anchored on a prestress anchoring plate, and the upper shape of the UHPC base is matched with the lower shape of the special-shaped outer beam. This novel HUPC makes up case roof beam, through set up a plurality of floor in the annular space of the real web roof beam of abnormal shape for the core structure of case roof beam can bear great load, simultaneously, the UHPC base of the real web roof beam lower part of abnormal shape can provide better support for the case roof beam.
Description
Technical Field
The utility model belongs to the field of bridges, and particularly relates to a HUPC combined box girder.
Background
The Ultra-high performance concrete (Ultra-High Performance Concrete, UHPC, hereinafter referred to as UHPC) has the advantages of high elastic modulus, high tensile strength, good shrinkage creep characteristic, good durability and the like, can reduce the structural size, reduce the structural dead weight, increase the spanning capacity of the bridge structure, and has wide application prospect.
Along with the expansion of the scale of highway construction in China, various large-span and large-tonnage bridge structures are also applied. Currently, a simply supported bridge with a large span mostly adopts a T-shaped section beam or a box-shaped section beam. The T beam bridge formed by the T beams has smaller transverse rigidity, poorer torsion resistance and poorer stability during installation, and is not suitable for being used in a larger span. The simple girder bridge with larger span generally adopts a girder, the steel girder has strong torsion resistance and easy erection construction, and is suitable for being applied to highways and urban bridges, when the span is larger, the concrete girder has large weight, the casting or erection is difficult, and the girder has special requirements for the bearing capacity, and the cross section area of the girder needs to be designed into a larger form at the moment, so that the bearing capacity requirement can be met.
Disclosure of Invention
The utility model aims to provide a HUPC combined box girder, which has larger bearing capacity and greatly reduces the cross-sectional area of the box girder.
In order to achieve the purpose, the technical scheme adopted by the utility model is as follows, and the device comprises a bridge deck, a trapezoid frame, a special-shaped solid web beam and a UHPC base which are sequentially arranged from top to bottom;
the trapezoid frame comprises an upper top plate and a pair of bending parts, wherein the pair of bending parts are symmetrically arranged on two sides of the lower part of the upper top plate, each bending part comprises a side plate, a lower bottom plate and a vertical connecting plate which are sequentially connected, and a diaphragm plate is arranged in each bending part;
the special-shaped solid web beam is arranged between the pair of bending parts, the special-shaped solid web beam comprises a special-shaped inner beam and a special-shaped outer beam sleeved outside the special-shaped inner beam, an annular space is arranged between the special-shaped outer beam and the special-shaped inner beam, a plurality of rib plates are arranged along the circumferential direction of the annular space to divide the annular space into a plurality of separation cavities, prestressed anchorage plates are arranged at two ends of the special-shaped solid web beam, and two ends of a prestressed rope penetrate through the separation cavities and are anchored on the prestressed anchorage plates; the upper shape of the UHPC base is matched with the lower shape of the special-shaped outer beam.
Preferably, the special-shaped solid web beam is connected with the vertical connecting plate of the trapezoid frame through bolts.
Preferably, the UHPC base is connected to the lower floor of the ladder frame by bolts.
Preferably, the pre-stressed anchor plate is provided with anchor holes.
Preferably, stiffening ribs are arranged on the transverse partition plates, the transverse partition plates are multiple, and the transverse partition plates are equidistantly arranged along the length direction of the bending part.
Preferably, the prestress ropes are distributed on the upper part and the lower part of the special-shaped solid web girder.
Preferably, the pre-stressed anchor plate has a shape and size that corresponds to the shape and size of the cross-section of the annular space.
Preferably, the distance between two adjacent rib plates is 1/30-1/40 of the perimeter of the special-shaped outer beam.
Preferably, the diaphragm plates are arranged at equal intervals along 1/10-1/12 of the length of the bending part.
Preferably, the cross section of the special-shaped solid web beam is four-deformation, hexagonal or octagonal.
The utility model has the beneficial effects that: through set up a plurality of floor at the real web beam of abnormal shape, cut apart into a plurality of separate rooms with the annular space between abnormal shape outer beam and the abnormal shape inner beam for the core structure of case roof beam can bear great load, simultaneously, the lower part of the real web beam of abnormal shape sets up the UHPC base, can provide better support for the case roof beam, and the UHPC base forms half parcel formula to the real web beam of abnormal shape, can effectively reduce the erosion of external environment to the real web beam of abnormal shape, promotes the life of case roof beam. Compared with the traditional box girder in a welding mode, the box girder has the advantages that the structure is simple, the installation is quick, the convenience in maintenance and replacement of the box girder is greatly improved, and the problem that the cross section area of the box girder is large when the bearing capacity of the box girder is required to be large can be effectively solved.
Drawings
The foregoing and other objects, features and advantages of the utility model will be apparent from the following more particular descriptions of exemplary embodiments of the utility model as illustrated in the accompanying drawings wherein like reference numbers generally represent like parts throughout the exemplary embodiments of the utility model.
Fig. 1 is a schematic structural diagram of a UHPC composite box girder according to an embodiment of the utility model.
Fig. 2 is a schematic structural view of a ladder frame according to an embodiment of the present utility model.
Fig. 3 is a schematic structural view of a special-shaped solid web beam according to an embodiment of the present utility model.
FIG. 4 is a schematic illustration of the construction of a pre-stressed anchor plate, in accordance with one embodiment of the present utility model.
Reference numerals illustrate:
1. a bridge deck; 2. a trapezoidal frame; 2-1, upper top plate; 2-2, a lower bottom plate; 2-3, a vertical connecting plate; 2-4, side plates; 2-5, bolt holes; 3. a special-shaped solid web beam; 3-1, a special-shaped outer beam; 3-2, a special-shaped inner beam; 4. rib plates; 5. a diaphragm; 6. UHPC base; 7. a pre-stressed anchor plate; 7-1, anchoring holes; 8. a pre-stressed rope; 9. and (5) a bolt.
Description of the embodiments
The utility model will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present utility model are illustrated in the drawings, it should be understood that the present utility model may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the utility model to those skilled in the art.
As shown in fig. 1 to 4, according to one embodiment of the present utility model, there is provided a HUPC composite box girder, which includes a bridge deck plate 1, a ladder frame 2, a profiled solid web girder 3, and a UHPC base 6 sequentially arranged from top to bottom, wherein an upper shape of the UHPC base 6 is matched with a lower shape of a profiled outer girder 3-1.
Therefore, the UHPC base forms a semi-wrapping type for the special-shaped solid web beam, the UHPC base can provide better support for the box beam, the erosion of the external environment to the special-shaped solid web beam can be effectively reduced, and the service life of the box beam is prolonged.
In this embodiment, as shown in fig. 2, the ladder frame 2 includes an upper top plate 2-1 and a pair of bending parts, where the pair of bending parts are symmetrically disposed on two sides of the lower portion of the upper top plate 2-1, and the bending parts include a side plate 2-4, a lower bottom plate 2-2 and a vertical connecting plate 2-3 that are sequentially connected, the upper portion of the side plate 2-4 is vertically disposed on one side edge of the upper top plate 2-1, and the lower portion of the side plate 2-4 is inclined toward the inner side of the ladder frame 2, so that two sides of the ladder frame 2 are inclined inward to form a ladder structure, and stability of the box girder is increased.
In this embodiment, as shown in fig. 1, the diaphragm 5 is provided inside the bending portion, and the shape of the diaphragm 5 is identical to the cross-sectional shape of the bending portion, so that the supportability of the ladder frame 2 can be increased. Wherein, the upper top plate 2-1, the side plates 2-4, the lower bottom plate 2-2 and the vertical connecting plate 2-5 are welded into a whole.
As the preferable scheme, as shown in FIG. 1, stiffening ribs are arranged on the diaphragm plates 5 to form grid-shaped stiffening ribs, the diaphragm plates 5 are multiple, and the diaphragm plates 5 are equidistantly arranged along the length direction of the bending part, so that the bearing capacity of the box girder is improved. As the preferable scheme, the diaphragm plates 5 are arranged at equal intervals along 1/10-1/12 of the length of the bending part, so that the bearing capacity is increased, and meanwhile, the cross section area of the box girder can be reduced.
In this embodiment, as shown in fig. 3 and 4, the special-shaped solid web beam 3 is disposed between a pair of bending parts, the special-shaped solid web beam 3 includes a special-shaped inner beam 3-2 and a special-shaped outer beam 3-1 sleeved outside the special-shaped inner beam 3-2, an annular space is disposed between the special-shaped outer beam 3-1 and the special-shaped inner beam 3-2, a plurality of rib plates 4 are disposed along the circumferential direction of the annular space, the annular space is divided into a plurality of separate cavities, and the separate cavities are respectively disposed at the outer circumference of the special-shaped solid web beam, so that good support can be provided, the core structure of the box beam can bear larger load, and the sectional area of the box beam is reduced.
As a preferable scheme, the distance between two adjacent rib plates 4 is 1/30-1/40 of the circumference of the special-shaped outer beam 3-1, the number of the rib plates 4 is increased, the interval size of a separation cavity is shortened, and the supporting strength of the special-shaped solid web beam 3 is improved.
In this embodiment, as shown in fig. 3 and 4, two ends of the special-shaped solid web beam 3 are provided with a pre-stress anchoring plate 7, and the pre-stress anchoring plate 7 is provided with an anchoring hole 7-1. The prestress ropes 8 are multiple, the prestress ropes 8 penetrate through the separation cavities, are distributed on the upper portion and the lower portion of the special-shaped solid web beam 3, and are anchored on the anchoring holes 7-1 of the prestress anchoring plates 7.
As a preferable scheme, after the prestress rope 8 is anchored, the prestress anchoring plate 7 is welded with the special-shaped solid web beam 3, a plurality of prestress ropes 8 are arranged along the upper part and the lower part of the special-shaped solid web beam 3, and the prestress rope 8, the prestress anchoring plate 7 and the special-shaped solid web beam 3 form a whole in a welding and anchoring mode, and the prestress rope 8 can bear a part of prestress, so that the integral strength and bearing capacity of the box beam are increased.
Preferably, the shape and size of the prestress anchoring plate 7 are consistent with the shape and size of the cross section of the annular space, so that the prestress ropes 8 are anchored and unnecessary weight of the box girder can be reduced.
As a preferred solution, the cross-sectional shape of the special-shaped solid web beam 3 is a four-deformation, hexagonal or octagonal shape, which has good structural stability and bearing capacity, and in this embodiment, as shown in fig. 3, the cross-sectional shape of the special-shaped solid web beam 3 is a hexagonal shape.
In this embodiment, as shown in fig. 2 and 3, a plurality of bolt holes 2-5 are formed along the edges of the lower bottom plate 2-2 and the vertical connecting plate 2-3 of the ladder-shaped frame 2, the special-shaped solid web beam 3 is connected with the vertical connecting plate 2-3 and the lower bottom plate 2-2 of the ladder-shaped frame 2 through bolts 9, the bolts 9 are high-strength shear-resistant bolts, the ladder-shaped frame 2 is connected with the special-shaped solid web beam 3 through shear-resistant connectors, the characteristics of strong compression resistance of concrete and high tensile resistance of steel are utilized, and the material characteristics are fully utilized.
The UHPC combined box girder of the embodiment has the advantages that the structure is simple, the installation is rapid, compared with the traditional box girder which adopts a welded mode, the maintenance and the replacement are convenient, the bearing capacity of the box girder is improved, and meanwhile, the sectional area of the box girder in design can be reduced.
The foregoing description of embodiments of the utility model has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described.
Claims (10)
1. The HUPC combined box girder is characterized by comprising a bridge deck (1), a trapezoid frame (2), a special-shaped solid web girder (3) and a UHPC base (6) which are sequentially arranged from top to bottom;
the trapezoid frame (2) comprises an upper top plate (2-1) and a pair of bending parts, wherein the pair of bending parts are symmetrically arranged on two sides of the lower part of the upper top plate (2-1), each bending part comprises a side plate (2-4), a lower bottom plate (2-2) and a vertical connecting plate (2-3) which are sequentially connected, and a diaphragm plate (5) is arranged in each bending part;
the special-shaped solid web beam (3) is arranged between the pair of bending parts, the special-shaped solid web beam (3) comprises a special-shaped inner beam (3-2) and a special-shaped outer beam (3-1) sleeved outside the special-shaped inner beam (3-2), an annular space is arranged between the special-shaped outer beam (3-1) and the special-shaped inner beam (3-2), a plurality of rib plates (4) are arranged along the circumferential direction of the annular space to divide the annular space into a plurality of separation cavities, prestress anchor plates (7) are arranged at two ends of the special-shaped solid web beam (3), prestress ropes (8) are anchored on the prestress anchor plates (7), and two ends of each prestress rope (8) penetrate through the separation cavities;
the upper shape of the UHPC base (6) is matched with the lower shape of the special-shaped outer beam (3-1).
2. HUPC composite box girder according to claim 1, characterized in that the profiled solid web girder (3) is connected with the vertical connection plates (2-3) of the ladder frame (2) by means of bolts (9).
3. HUPC composite box girder according to claim 1, characterized in that said UHPC base (6) is connected to said lower floor (2-2) of said ladder frame (2) by means of bolts (9).
4. HUPC composite box girder according to claim 1, characterized in that the pre-stressed anchor plate (7) is provided with anchor holes (7-1).
5. HUPC composite box girder according to claim 1, characterized in that stiffening ribs (5-1) are arranged on the diaphragm plates (5), the number of the diaphragm plates (5) is plural, and the plural diaphragm plates (5) are equidistantly arranged along the length direction of the bending part.
6. HUPC composite box girder according to claim 1, characterized in that the pre-stressing ropes (8) are a plurality of pre-stressing ropes (8) distributed in the upper and lower parts of the profiled solid web girder (3).
7. HUPC composite box girder according to claim 1, characterized in that the shape and dimensions of the pre-stressed anchor plates (7) correspond to the shape and dimensions of the cross-section of the annular space.
8. HUPC composite box girder according to claim 1, characterized in that the spacing between two adjacent ribs (4) is 1/30-1/40 of the perimeter of the profiled outer girder (3-1).
9. HUPC composite box girder according to claim 5, characterized in that the diaphragm plates (5) are equally spaced along 1/10-1/12 of the length of the bending portion.
10. HUPC composite box girder according to claim 1, characterized in that the cross-sectional shape of the profiled solid web girder (3) is a four-way deformation, a hexagon or an octagon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223332390.1U CN219752964U (en) | 2022-12-13 | 2022-12-13 | HUPC combination box girder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223332390.1U CN219752964U (en) | 2022-12-13 | 2022-12-13 | HUPC combination box girder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219752964U true CN219752964U (en) | 2023-09-26 |
Family
ID=88076512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223332390.1U Active CN219752964U (en) | 2022-12-13 | 2022-12-13 | HUPC combination box girder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219752964U (en) |
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2022
- 2022-12-13 CN CN202223332390.1U patent/CN219752964U/en active Active
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