Double-layer reinforced concrete combined box culvert

Abstract

The utility model provides a double-layer reinforced concrete combined box culvert, which belongs to the technical field of corrugated steel and comprises two foundation bases, an outer corrugated steel plate, an inner corrugated steel plate, a plurality of connecting pieces and filling materials. The two ends of the outer corrugated steel plate and the two ends of the inner corrugated steel plate are fixedly installed on the two foundation bases. A filling space is formed between the inner side corrugated steel plate and the outer side corrugated steel plate; the connecting piece is mounted in the filling space; the two ends of the connecting piece are fixedly connected with the outer side corrugated steel plate and the inner side corrugated steel plate respectively. The filling space is filled with the filling materials, and the filling materials are connected with the outer side corrugated steel plates, the inner side corrugated steel plates and the connecting pieces. According to the double-layer reinforced concrete combined box culvert, the outer side corrugated steel plates and the inner side corrugated steel plates which are arranged in a double-layer mode are adopted, and the whole filling space is filled with the filling materials, so that the strength of the box culvert is improved, the bearing capacity is high, and the using process is safer.

Description

Technical Field

[0001] The utility model belongs to the technical field of corrugated steel, and more specifically relates to a double-layer steel-concrete combined box culvert. Background Art

[0002] Corrugated steel sheets have strong deformation resistance, are quick and easy to install, save construction time, and have the advantages of low cost and environmental protection. In transportation and municipal engineering projects, corrugated steel sheets are widely used to construct culverts, tunnels, underground passages, and underground pipelines. However, for some culverts, tunnels, underground passages, and underground pipelines with high load-bearing requirements, using only corrugated steel sheets will result in insufficient load-bearing capacity, posing a safety hazard. Utility Model Content

[0003] The purpose of the utility model is to provide a double-layer steel-concrete combined box culvert to solve the technical problems in the prior art of insufficient bearing capacity and potential safety hazards of culverts, tunnels, underground passages and underground pipelines made of corrugated steel plates.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is to provide a double-layer steel-concrete combined box culvert, comprising:

[0005] Two basic bases are provided, each for installation on both sides of the channel;

[0006] The outer corrugated steel plate is used to be installed above the channel, and its two ends are respectively fixedly installed on the two basic bases;

[0007] An inner corrugated steel plate is used to be installed above the channel and is located inside the outer corrugated steel plate; a filling space is provided between the inner corrugated steel plate and the outer corrugated steel plate;

[0008] There are multiple connecting pieces, all installed in the filling space; two ends of the connecting piece are fixedly connected to the outer corrugated steel plate and the inner corrugated steel plate respectively;

[0009] A filling material is filled in the filling space and connected to the outer corrugated steel plate, the inner corrugated steel plate and the connecting piece.

[0010] In a possible implementation, the connecting member includes a support rod and two locking fixing members, the upper and lower ends of the support rod are respectively connected to the outer corrugated steel plate and the inner corrugated steel plate, and the upper and lower ends are provided with connecting holes, and the outer corrugated steel plate and the inner corrugated steel plate are both provided with through holes corresponding to the connecting holes; the two locking fixing members respectively pass through the corresponding through holes from the outside of the outer corrugated steel plate and the inside of the inner corrugated steel plate and are connected to the connecting holes, for fixedly connecting the outer corrugated steel plate and the inner corrugated steel plate.

[0011] In a possible implementation, the support rod includes a sleeve and first nuts fixedly mounted on both ends of the sleeve, and the locking fixture is a bolt.

[0012] In one possible implementation, the troughs of the outer corrugated steel plate correspond to the crests of the inner corrugated steel plate, and the crests of the outer corrugated steel plate correspond to the troughs of the inner corrugated steel plate; the upper and lower ends of the connecting piece are respectively connected to the troughs or crests of the outer corrugated steel plate.

[0013] In a possible implementation, the end of the connecting member is provided with an arc-shaped plate that is mounted in coordination with the crests or troughs of the inner corrugated steel plate.

[0014] In a possible implementation, a plurality of partition plates arranged along the circumferential direction are provided in the filling space.

[0015] In a possible implementation, the outer corrugated steel plates and the inner corrugated steel plates are both in multiple numbers and are arranged in sequence along the axial direction; mounting flanges are provided on both sides of the outer corrugated steel plates and the inner corrugated steel plates, and the two adjacent outer corrugated steel plates and the two adjacent inner corrugated steel plates are butted together through the mounting flanges and fixedly connected by bolts and second nuts; the outer corrugated steel plates and the inner corrugated steel plates each include a plurality of butt-mounted corrugated plate sheets, and mounting flanges are provided at both ends of the corrugated plate sheets, and the mounting flanges of the two adjacent corrugated plate sheets are butt-mounted and fixedly connected by bolts and second nuts.

[0016] In a possible implementation, a plurality of annular support members are further provided in the filling space, and the annular support members include a vertical plate and a horizontal plate installed at both ends of the vertical plate, and the two horizontal plates are respectively connected to the inner side of the outer corrugated steel plate and the outer side of the inner corrugated steel plate.

[0017] In a possible implementation, the filling material is self-compacting concrete.

[0018] In a possible implementation, a steel mesh is provided in the filling space.

[0019] The double-layer steel-concrete combined box culvert provided by the utility model has the following beneficial effects: compared with the prior art, the double-layer steel-concrete combined box culvert of the utility model, when installed, firstly, basic bases are set on both sides of the channel, and the basic bases extend along the length direction of the channel; an inner corrugated steel plate is arranged above the channel, and the inner corrugated steel plate is arched and its two ends are fixedly installed on the two basic bases, and a plurality of connecting pieces are installed on the inner corrugated steel plate; then, an outer corrugated steel plate is installed on the outer side of the inner corrugated steel plate, and its two ends are fixedly installed on the two basic bases, and the outer corrugated steel plate and the inner corrugated steel plate are connected by connecting pieces. The steel plates are fixedly connected together, and the two ends of the connecting piece are respectively connected to the outer corrugated steel plate and the inner corrugated steel plate, which also makes the outer corrugated steel plate and the inner corrugated steel plate have stronger bearing performance; there is a gap between the outer corrugated steel plate and the inner corrugated steel plate to form a filling space, and finally the filling space is filled with filling material, so that the outer corrugated steel plate, the inner corrugated steel plate, multiple connecting pieces and the filling material are connected as a whole; in this way, a double-layer arrangement of the outer corrugated steel plate and the inner corrugated steel plate is adopted, and the filling material covers the entire filling space, thereby increasing the strength of the box culvert, having a higher bearing capacity, and making the use process safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0021] Figure 1 A schematic structural diagram of a double-layer steel-concrete composite box culvert provided in an embodiment of the present utility model;

[0022] Figure 2 A cross-sectional view of a double-layer steel-concrete combined box culvert provided in an embodiment of the present invention Figure 1 ;

[0023] Figure 3 A cross-sectional view of a double-layer steel-concrete combined box culvert provided in an embodiment of the present invention Figure 2 ;

[0024] Figure 4 A schematic diagram of the connection between two adjacent corrugated plates provided in an embodiment of the present utility model;

[0025] Figure 5 Schematic diagram of the structure of the connecting piece provided in the embodiment of the utility model Figure 1 ;

[0026] Figure 6 Schematic diagram of the structure of the connecting piece provided in the embodiment of the utility model Figure 2 ;

[0027] Figure 7 A schematic structural diagram of an annular support member provided in an embodiment of the present utility model.

[0028] Among them, the reference numerals in the figures are:

[0029] 1. Foundation base; 11. Steel section; 12. End flange; 2. Outer corrugated steel plate; 21. Through hole; 22. Corrugated plate; 23. Mounting flange; 24. Second nut; 3. Inner corrugated steel plate; 31. Filling space; 4. Connector; 41. Support rod; 42. Locking fixture; 43. Connecting hole; 44. Sleeve; 45. First nut; 46. Arc plate; 5. Filling material; 6. Annular support; 61. Vertical plate; 62. Horizontal plate. DETAILED DESCRIPTION

[0030] In order to make the technical problems, technical solutions and beneficial effects to be solved by 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 only used to explain the present invention and are not intended to limit the present invention.

[0031] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0032] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0034] See also Figures 1 to 7The double-layer steel-concrete composite box culvert provided by the present invention is now described. A double-layer steel-concrete composite box culvert includes a basic base 1, an outer corrugated steel plate 2, an inner corrugated steel plate 3, a connecting piece 4 and a filling material 5. The number of the basic bases 1 is two, which are respectively used to be installed on both sides of the channel; the outer corrugated steel plate 2 is used to be installed above the channel, and the two ends are fixedly installed on the two basic bases 1 respectively; the inner corrugated steel plate 3 is used to be installed above the channel and is located inside the outer corrugated steel plate 2; there is a filling space 31 between the inner corrugated steel plate 3 and the outer corrugated steel plate 2; the number of the connecting pieces 4 is multiple, and all are installed in the filling space 31; the two ends of the connecting piece 4 are fixedly connected to the outer corrugated steel plate 2 and the inner corrugated steel plate 3 respectively; the filling material 5 is filled in the filling space 31 and is connected to the outer corrugated steel plate 2, the inner corrugated steel plate 3 and the connecting piece 4.

[0035] Compared with the prior art, the double-layer steel-concrete combined box culvert provided by the present invention has the following characteristics: during installation, a basic base 1 is first arranged on both sides of the channel, and the basic base 1 extends along the length direction of the channel; an inner corrugated steel plate 3 is arranged above the channel, and the inner corrugated steel plate 3 is arched and fixedly mounted on the two basic bases 1 at both ends, and a plurality of connectors 4 are installed on the inner corrugated steel plate 3; then, an outer corrugated steel plate 2 is installed on the outer side of the inner corrugated steel plate 3, and the two ends of the outer corrugated steel plate 2 are fixedly mounted on the two basic bases 1, and the outer corrugated steel plate 2 and the inner corrugated steel plate 3 are fixedly connected together by the connectors 4, and the connection The two ends of the component 4 are respectively connected to the outer corrugated steel plate 2 and the inner corrugated steel plate 3, which also make the outer corrugated steel plate 2 and the inner corrugated steel plate 3 have stronger bearing performance; there is a gap between the outer corrugated steel plate 2 and the inner corrugated steel plate 3 to form a filling space 31, and finally the filling space 31 is filled with filling material, so that the outer corrugated steel plate 2, the inner corrugated steel plate 3, multiple connecting components 4 and the filling material are connected as a whole; in this way, a double-layer arrangement of the outer corrugated steel plate 2 and the inner corrugated steel plate 3 is adopted, and the filling material 5 covers the entire filling space 31, thereby increasing the strength of the box culvert, having a higher bearing capacity, and making the use process safer.

[0036] A steel section 11 is installed on the base 1, and the ends of the outer corrugated steel plate 2 and the inner corrugated steel plate 3 are provided with end flanges 12 for fixed connection with the steel section 11, so that the outer corrugated steel plate 2 and the inner corrugated steel plate 3 are fixed more firmly.

[0037] See also Figures 1 to 6As a specific embodiment of the double-layer steel-concrete composite box culvert provided by the present invention, the connecting piece 4 includes a support rod 41 and two locking fixing pieces 42. The upper and lower ends of the support rod 41 are respectively connected to the outer corrugated steel plate 2 and the inner corrugated steel plate 3, and the upper and lower ends are provided with connecting holes 43. The outer corrugated steel plate 2 and the inner corrugated steel plate 3 are provided with through holes 21 corresponding to the connecting holes 43; the two locking fixing pieces 42 pass through the corresponding through holes 21 from the outer side of the outer corrugated steel plate 2 and the inner side of the inner corrugated steel plate 3 and are connected to the connecting holes 43 for fixedly connecting the outer corrugated steel plate 2 and the inner corrugated steel plate 3; the support rod 41 is located in the filling space 31, and the connecting holes 43 at the upper and lower ends are coaxially aligned with the through holes 21 on the outer corrugated steel plate 2 and the inner corrugated steel plate 3, and then the two locking fixing pieces 42 are used to fix the outer corrugated steel plate 2 and the inner corrugated steel plate 3 to the support rod 41 respectively.

[0038] Preferably, as a specific embodiment of the double-layer steel-concrete composite box culvert provided by the present invention, the support rod 41 includes a sleeve 44 and a first nut 45 fixedly installed at both ends of the sleeve 44, the locking fixture 42 is a bolt, and the threaded hole in the first nut 45 and the hollow cavity in the sleeve 44 constitute a connecting hole 43, and then the two first nuts 45 are used to pass through the through hole 21 outside the outer corrugated steel plate 2 and inside the inner corrugated steel plate 3 and are threadedly connected to the first nuts 45 to achieve a fixed connection between the outer corrugated steel plate 2, the inner corrugated steel plate 3 and the sleeve 44.

[0039] See also Figures 1 to 4 As a specific embodiment of the double-layer steel-concrete composite box culvert provided by the utility model, the trough of the outer corrugated steel plate 2 corresponds to the crest of the inner corrugated steel plate 3 up and down, and the crest of the outer corrugated steel plate 2 corresponds to the trough of the inner corrugated steel plate 3 up and down; the upper and lower ends of the connecting piece 4 are respectively connected to the trough or crest of the outer corrugated steel plate 2; in this way, the upper and lower ends of the connecting piece 4 are in smooth contact with the outer corrugated steel plate 2 and the inner corrugated steel plate 3, and the connection is relatively stable, firm and accurate.

[0040] See also Figures 2 to 6 As a specific embodiment of the double-layer steel-concrete combined box culvert provided by the utility model, the end of the connecting piece 4 is provided with a curved plate 46 installed in coordination with the crest or trough of the inner corrugated steel plate 3. The curved plate 46 is adapted to the curved outer side surfaces of the outer corrugated steel plate 2 and the inner corrugated steel plate 3, so that the connection surface between the connecting piece 4 and the outer corrugated steel plate 2 and the inner corrugated steel plate 3 is larger, more stable and more convenient to install.

[0041] As a specific embodiment of the double-layer steel-concrete composite box culvert provided by the utility model, a plurality of partition plates arranged along the circumferential direction are provided in the filling space 31. The plurality of partition plates are provided to divide the filling space 31 into a plurality of independent areas, thereby facilitating pouring in different areas, with high work efficiency and better pouring effect.

[0042] See also Figures 1 to 4 As a specific embodiment of the double-layer steel-concrete composite box culvert provided by the present invention, the number of outer corrugated steel plates 2 and inner corrugated steel plates 3 are both multiple and arranged in sequence along the axial direction. Mounting flanges 23 are provided on both sides of the outer corrugated steel plates 2 and inner corrugated steel plates 3. Adjacent outer corrugated steel plates 2 and adjacent inner corrugated steel plates 3 are butted together via the mounting flanges 23 and fixedly connected using bolts and second nuts 24. Both the outer corrugated steel plates 2 and inner corrugated steel plates 3 include multiple butted corrugated plate segments 22. Mounting flanges 23 are provided on both ends of the corrugated plate segments 22. The mounting flanges 23 of adjacent corrugated plate segments 22 are butted together and fixedly connected using bolts and second nuts 24. Specifically, mounting flanges 23 are provided on both sides of the outer corrugated steel plates 2. Multiple outer corrugated steel plates 2 are butted together in sequence along the axial direction of the box culvert. Adjacent mounting flanges 23 are butted together and fixedly connected using bolts and second nuts 24. Sealing gaskets are also provided on the mounting flanges 23 to improve the sealing performance of the outer corrugated steel plates 2. Similarly, mounting flanges 23 are provided on both sides of the inner corrugated steel sheet 3. Multiple inner corrugated steel sheets 3 are butt-jointed and installed in sequence along the culvert's axial direction. Adjacent mounting flanges 23 are butt-jointed and secured together using bolts and second nuts 24. Sealing washers are also provided on the mounting flanges 23 to enhance the sealing performance of the inner corrugated steel sheets 3. Both the outer and inner corrugated steel sheets 2 and 3 comprise multiple corrugated sheet pieces 22 that are butt-jointed along an arc. Mounting flanges 23 are also provided on both ends and sides of each corrugated sheet piece 22, allowing adjacent corrugated sheet pieces 22 to be butt-jointed and secured together using bolts and second nuts 24.

[0043] See also Figure 2 、 Figure 3 and Figure 7 As a specific embodiment of the double-layer steel-concrete composite box culvert provided by the present invention, multiple annular support members 6 are further provided within the filling space 31. The annular support members 6 include a vertical plate 61 and horizontal plates 62 mounted at both ends of the vertical plate 61. The two horizontal plates 62 are respectively connected to the inner side of the outer corrugated steel plate 2 and the outer side of the inner corrugated steel plate 3. The multiple annular support members 6 are fixed within the filling space 31, thereby stably supporting the outer corrugated steel plate 2. The annular support members 6 are U-shaped, with horizontal plates 62 fixedly mounted at both ends of the vertical plate 61. The two horizontal plates 62 are respectively connected to and fixedly connected to the outer corrugated steel plate 2 and the inner corrugated steel plate 3.

[0044] See also Figures 1 to 4 In a specific embodiment of the double-layer steel-concrete composite box culvert provided by the present invention, the filling material 5 is self-compacting concrete. Self-compacting concrete, due to its self-compacting properties, flows and compacts under its own gravity, completely filling the entire filling space 31 while maintaining excellent homogeneity and eliminating the need for additional vibration. Furthermore, self-compacting concrete exhibits high durability and strength, thereby enhancing the strength and load-bearing capacity of the entire box culvert structure.

[0045] As a specific embodiment of the double-layer steel-concrete composite box culvert provided by the utility model, a steel mesh is provided in the filling space 31; the steel mesh is evenly arranged in the filling space 31, and with the help of the steel bars, the self-compacting concrete is formed into a whole, which can withstand both compression and tension; thus, the self-compacting concrete is made stronger and more stable, the bearing capacity of the self-compacting concrete is improved, and the service life is extended.

[0046] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A double-layer steel-concrete combined box culvert, characterized in that: include: Two basic bases are used to be installed on both sides of the channel; The outer corrugated steel plate is used to be installed above the channel, and the two ends are respectively fixedly installed on the two basic bases; An inner corrugated steel plate is used to be installed above the channel and is located inside the outer corrugated steel plate; a filling space is provided between the inner corrugated steel plate and the outer corrugated steel plate; A plurality of connecting pieces are installed in the filling space; two ends of the connecting piece are fixedly connected to the outer corrugated steel plate and the inner corrugated steel plate respectively; A filling material is filled in the filling space and connected to the outer corrugated steel plate, the inner corrugated steel plate and the connecting piece.

2. The double-layer steel-concrete composite box culvert according to claim 1 is characterized in that: The connecting member includes a support rod and two locking fixing members, the upper and lower ends of the support rod are respectively connected to the outer corrugated steel plate and the inner corrugated steel plate, and the upper and lower ends are provided with connecting holes, and the outer corrugated steel plate and the inner corrugated steel plate are both provided with through holes corresponding to the connecting holes; the two locking fixing members respectively pass through the corresponding through holes from the outer side of the outer corrugated steel plate and the inner side of the inner corrugated steel plate and are connected to the connecting holes, so as to fix the outer corrugated steel plate and the inner corrugated steel plate.

3. The double-layer steel-concrete combined box culvert according to claim 2 is characterized in that: The support rod comprises a sleeve and first nuts fixedly mounted at two ends of the sleeve, and the locking fixing member is a bolt.

4. The double-layer steel-concrete combined box culvert according to claim 2 is characterized in that: The trough of the outer corrugated steel plate corresponds to the crest of the inner corrugated steel plate, and the crest of the outer corrugated steel plate corresponds to the trough of the inner corrugated steel plate; the upper and lower ends of the connecting piece are respectively connected to the trough or crest of the outer corrugated steel plate.

5. The double-layer steel-concrete composite box culvert according to claim 4 is characterized in that: The end of the connecting piece is provided with an arc-shaped plate which is installed in cooperation with the crest or trough of the inner corrugated steel plate.

6. The double-layer steel-concrete composite box culvert according to claim 1 is characterized in that: A plurality of partition plates arranged along the circumferential direction are arranged in the filling space.

7. The double-layer steel-concrete composite box culvert according to claim 1 is characterized in that: The number of the outer corrugated steel plates and the inner corrugated steel plates are both multiple, and are arranged in sequence along the axial direction; both sides of the outer corrugated steel plates and the inner corrugated steel plates are provided with mounting flanges, and the two adjacent outer corrugated steel plates and the two adjacent inner corrugated steel plates are butt-jointed through the mounting flanges and fixedly connected by bolts and second nuts; the outer corrugated steel plates and the inner corrugated steel plates each include a plurality of butt-jointed corrugated plate sheets, both ends of the corrugated plate sheets are provided with mounting flanges, and the mounting flanges of the two adjacent corrugated plate sheets are butt-jointed and fixedly connected by bolts and second nuts.

8. The double-layer steel-concrete composite box culvert according to claim 1 is characterized in that: A plurality of annular support members are also provided in the filling space, and the annular support members include a vertical plate and a horizontal plate installed at both ends of the vertical plate, and the two horizontal plates are respectively connected to the inner side of the outer corrugated steel plate and the outer side of the inner corrugated steel plate.

9. The double-layer steel-concrete composite box culvert according to claim 1 is characterized in that: The filling material is self-compacting concrete.

10. The double-layer steel-concrete composite box culvert according to claim 9, characterized in that: A steel mesh is arranged in the filling space.

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