CN218779351U - Steel-concrete composite structure prefabricated box culvert - Google Patents
Steel-concrete composite structure prefabricated box culvert Download PDFInfo
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- CN218779351U CN218779351U CN202222491605.8U CN202222491605U CN218779351U CN 218779351 U CN218779351 U CN 218779351U CN 202222491605 U CN202222491605 U CN 202222491605U CN 218779351 U CN218779351 U CN 218779351U
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Abstract
The utility model relates to the technical field of bridge engineering, in particular to a prefabricated box culvert with a steel shell-concrete combined structure, which comprises an outer steel shell and an inner steel shell which are coaxially arranged in parallel, wherein the outer steel shell and the inner steel shell form a steel box; an end steel plate is arranged on one side of the steel box, the steel box and the end steel plate form an open closed box body, and the closed box body is used for pouring and filling concrete; a plurality of annular stiffening ribs are arranged on the inner side wall surface of the outer steel shell and the outer side wall surface of the inner steel shell, and annular shear nails are arranged between the adjacent annular stiffening ribs; and a supporting component is arranged between the outer steel shell and the inner steel shell and used for fixing the outer steel shell and the inner steel shell. The utility model discloses a three sides seal box hat structure is concrete curing in the early age easily, and the box hat is except being structure atress component promptly, and the tip steel sheet is regarded as the bottom plate when vertical prefabricated pouring filling concrete, effectively prevents early age concrete desiccation shrinkage fracture problem.
Description
Technical Field
The utility model relates to a bridge engineering technical field specifically is a prefabricated box culvert of steel-concrete integrated configuration.
Background
The traditional concrete structure cast-in-place box culvert has long construction period and difficult maintenance, and is easy to crack due to dehydration shrinkage of early-age concrete; during construction, a formwork needs to be arranged independently for pouring, the formwork needs to be dismantled after maintenance, and the quality is difficult to control.
If the construction is carried out in a prefabricating mode, due to the fact that the single-section large-length prefabrication cannot be carried out due to the stress characteristic, the applicable span is limited, and the problems of obvious seam water leakage and seam corner cracking exist in the process of prefabricating and mounting short sections.
SUMMERY OF THE UTILITY MODEL
To the problem that there is the limited and easy fracture of seam corner department of span among the prior art, the utility model provides a prefabricated box culvert of steel-concrete integrated configuration.
The utility model discloses a realize through following technical scheme:
a prefabricated box culvert with a steel-concrete combined structure comprises an outer steel shell and an inner steel shell which are coaxially arranged in parallel, wherein the outer steel shell and the inner steel shell form a steel box; an end steel plate is arranged on one side of the steel box, the steel box and the end steel plate form an open closed box body, and the closed box body is used for pouring and filling concrete; a plurality of annular stiffening ribs are arranged on the inner side wall surface of the outer steel shell and the outer side wall surface of the inner steel shell, and annular shear nails are arranged between the adjacent annular stiffening ribs; and a supporting assembly is arranged between the outer steel shell and the inner steel shell and used for fixing the outer steel shell and the inner steel shell.
Preferably, the inner side of the inner steel shell and the outer side of the outer steel shell are both provided with stiffening ribs, and the supporting component is connected between the stiffening ribs of the inner steel shell and the stiffening ribs of the outer steel shell.
Preferably, the stiffening ribs are all long.
Preferably, a plurality of stiffening plates are arranged on the stiffening ribs, and the support component is connected with the stiffening plates.
Preferably, the stiffening plate is trapezoidal.
Preferably, the supporting component comprises a plurality of connecting flat supports, four corner supports and a plurality of connecting inclined supports, the connecting flat supports are perpendicular to the wall surface of the outer steel shell, the corner supports comprise first supports and second supports which are arranged in a crossed mode, and the connecting inclined supports comprise third supports and fourth supports which are arranged in a V shape.
Preferably, the connecting flat brace and the connecting inclined brace are both supported by angle steel.
Preferably, the circumferential stiffening ribs and the circumferential shear nails are both steel structures.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model adopts the steel shell-concrete combined structure to prefabricate the box culvert, the steel shell can be directly used as a template in the prefabrication period, and the box culvert does not need to be dismantled, thereby having better hoop effect on filling concrete; and meanwhile, the three-side closed steel shell structure is adopted to facilitate early-age concrete curing, namely the steel shell is used as a structural stress member and also used as a template for casting concrete inside the prefabricated box culvert of the steel shell-concrete composite structure, and the end steel plate is used as a bottom plate when the filling concrete is vertically precast and cast, so that the problem of early-age concrete shrinkage cracking is effectively prevented. The circumferential stiffening ribs are used for ensuring the local stability of the member and transmitting concentrated force, and the circumferential shear nails are helpful for reinforcing the connection between the steel box girder and the concrete. The supporting component is used for fixedly combining the outer steel shell and the inner steel shell into a whole.
The stiffening of the annular stiffening ribs and the connection of the angle steel can further limit the box culvert from outward bulging and bending under the bending and pressing state, so that the bearing capacity of the structure is improved; in addition, the shearing resistance and the connection function of the shear nails ensure that the member and the concrete can be in a complete bonding state; the stiffening ribs in the steel box can limit the surface deformation of the steel box, so that the node rigidity and the bearing capacity are improved.
When the prefabricated box culvert of the steel shell-concrete combined structure is prefabricated, the steel shell is vertically placed, filling concrete is poured, and the prefabricated box culvert is transported to the position of a culvert to be horizontally placed and installed after maintenance is finished; or after the external steel structure assembly construction is completed, the steel structure is transported to a construction site, the filling concrete is vertically placed and poured, and the steel structure is horizontally placed and installed after the maintenance is completed. Because the steel shell and the concrete are stressed cooperatively, the performance is good, the large-section prefabrication requirement can be met, the problems of water leakage and concrete carbonization caused by excessive joints can be avoided, the problem of corner cracking is avoided, and the long-term service performance is excellent.
The utility model discloses can carry out the construction of a plurality of box culvert steel construction segments of box-concrete integrated configuration simultaneously, accomplish the back at the construction of box culvert steel construction segments of box-concrete integrated configuration prefabricated box culvert, weld required box culvert segments of box-concrete integrated configuration as a whole, assemble a plurality of box culverts of box culvert of box-concrete integrated configuration prefabricated and connect into whole according to the construction demand to satisfy the construction demand.
Drawings
Fig. 1 is a schematic elevation view of a prefabricated box culvert with a steel-concrete composite structure according to the present invention;
fig. 2 is a schematic plan view of the prefabricated box culvert of a steel-concrete composite structure of the present invention;
fig. 3 is a schematic side view of the steel-concrete composite structure precast box culvert of the utility model.
In the figure, 1, a shear pin; 2. connecting a flat support; 3. a stiffening rib; 4. an inner steel shell; 5. an outer steel shell; 6. a stiffening plate; 7. connecting an inclined strut; 8. an end steel plate; 9. and filling concrete.
Detailed Description
The present invention will now be described in further detail with reference to specific examples, which are intended to be illustrative, but not limiting, of the invention.
The utility model discloses a prefabricated box culvert with a steel-concrete composite structure, which comprises an outer steel shell 5 and an inner steel shell 4 which are coaxially arranged in parallel, wherein the outer steel shell 5 and the inner steel shell 4 form a steel box; one side of the steel box is provided with an end steel plate 8, the steel box and the end steel plate 8 form an open closed box body, and the closed box body is used for pouring filling concrete 9.
And a supporting component is arranged between the outer steel shell 5 and the inner steel shell 4 and used for fixing the outer steel shell 5 and the inner steel shell 4, and the outer steel shell 5 and the inner steel shell 4 are fixedly connected into a whole through the supporting component to be used as a pouring template of the prefabricated box culvert of the steel shell-concrete combined structure. The inner side of the inner steel shell 4 and the outer side of the outer steel shell 5 are both provided with a long-strip stiffening rib 3, the stiffening rib 3 is provided with a plurality of trapezoidal stiffening plates 6, and the stiffening plates 6 play a role in assisting stress.
The support assembly is connected between the stiffening plates 6 of the inner steel shell 4 and the stiffening plates 6 of the outer steel shell 5. The supporting component comprises a plurality of connecting flat supports 2, four corner supports and a plurality of connecting inclined supports 7, the connecting flat supports 2 are perpendicular to the wall surface of the outer steel shell 5, the corner supports comprise a first support and a second support which are arranged in a crossed mode, the connecting inclined supports 7 comprise a third support and a fourth support which are arranged in a V-shaped mode, and the connecting flat supports 2 and the connecting inclined supports 7 are supported by angle steel.
All be equipped with a plurality of hoop stiffening ribs 3 on the inside wall face of outer steel casing 5 and the outside wall face of interior steel casing 4, hoop stiffening rib 3 is used for guaranteeing component local stability and transmits concentrated power, is equipped with hoop shear force nail 1 between the adjacent hoop stiffening rib 3, and wherein, hoop stiffening rib 3 and hoop shear force nail 1 are the steel construction.
The utility model relates to a concrete construction mode of steel-concrete integrated configuration precast box culvert is as follows:
the stiffening ribs 3, the shear nails 1, the inner steel shell 4, the outer steel shell 5, the end steel plates 8, the connecting flat supports 2, the connecting inclined supports 7 and the like are processed in a factory.
The stiffening rib 3 and the shear nail 1 are respectively welded on the inner steel shell 4 and the outer steel shell 5, then the inner steel shell 4 and the outer steel shell 5 are vertically placed, the positions of the inner steel shell 4 and the outer steel shell are adjusted, and the inner steel shell and the outer steel shell are conveniently connected into a whole by connecting the flat brace 2 and the inclined brace 7. The construction of a plurality of steel shell-concrete composite structure prefabricated box culvert steel structure segments can be simultaneously carried out, the filling concrete 9 in the steel shell-concrete composite structure prefabricated box culvert can be transported to the site for construction after the pouring and maintenance of a prefabrication factory is finished, or the steel shell-concrete composite structure prefabricated box culvert steel structure part can be transported to the site for pouring at the construction site.
The above-mentioned embodiments are only preferred embodiments of the present invention, and it should be understood by those skilled in the art that the technical solution of the present invention can be modified and replaced easily without departing from the spirit and principle of the present invention, and the modified and replaced embodiments also fall within the protection scope of the appended claims.
Claims (8)
1. The prefabricated box culvert with the steel-concrete combined structure is characterized by comprising an outer steel shell (5) and an inner steel shell (4) which are coaxially arranged in parallel, wherein the outer steel shell (5) and the inner steel shell (4) form a steel box; an end steel plate (8) is arranged on one side of the steel box, the steel box and the end steel plate (8) form an open closed box body, and the closed box body is used for pouring filling concrete (9); a plurality of circumferential stiffening ribs (3) are arranged on the inner side wall surface of the outer steel shell (5) and the outer side wall surface of the inner steel shell (4), and circumferential shear nails (1) are arranged between the adjacent circumferential stiffening ribs (3); and a supporting component is arranged between the outer steel shell (5) and the inner steel shell (4), and is used for fixing the outer steel shell (5) and the inner steel shell (4).
2. A steel-concrete composite structural prefabricated box culvert according to claim 1, characterized in that the inner side of the inner steel shell (4) and the outer side of the outer steel shell (5) are provided with stiffening ribs (3), and the supporting component is connected between the stiffening ribs (3) of the inner steel shell (4) and the stiffening ribs (3) of the outer steel shell (5).
3. The steel-concrete composite structural precast culvert according to claim 2, characterized in that the stiffeners (3) are each long.
4. The steel-concrete composite structure precast box culvert according to claim 2, characterized in that a plurality of stiffening plates (6) are arranged on the stiffening ribs (3), and the support components are connected with the stiffening plates (6).
5. The steel-concrete composite structure precast box culvert according to claim 4, characterized in that the stiffening plates (6) have a trapezoidal shape.
6. The steel-concrete composite structure precast box culvert according to claim 1, characterized in that the supporting component comprises a plurality of connecting flat braces (2), four corner braces and a plurality of connecting inclined braces (7), the connecting flat braces (2) are perpendicular to the wall surface of the outer steel shell (5), the corner braces comprise a first brace and a second brace which are arranged in a cross, and the connecting inclined braces (7) comprise a third brace and a fourth brace which are arranged in a V shape.
7. The steel-concrete composite structure precast box culvert according to claim 6, characterized in that the connecting flat braces (2) and the connecting diagonal braces (7) are both supported by angle steel.
8. The steel-concrete composite structure prefabricated box culvert according to claim 1, characterized in that the circumferential stiffeners (3) and the circumferential shear nails (1) are both steel structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222491605.8U CN218779351U (en) | 2022-09-20 | 2022-09-20 | Steel-concrete composite structure prefabricated box culvert |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222491605.8U CN218779351U (en) | 2022-09-20 | 2022-09-20 | Steel-concrete composite structure prefabricated box culvert |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218779351U true CN218779351U (en) | 2023-03-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222491605.8U Active CN218779351U (en) | 2022-09-20 | 2022-09-20 | Steel-concrete composite structure prefabricated box culvert |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218779351U (en) |
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2022
- 2022-09-20 CN CN202222491605.8U patent/CN218779351U/en active Active
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