Fabricated superposed box culvert

Abstract

The utility model discloses an assembly type laminated box culvert which comprises a plurality of outer plates and a plurality of inner plates, an inner frame is defined by the inner plates, an outer frame is defined by the outer plates on the periphery of the inner frame, and a concentric-square-shaped pouring cavity is formed by the inner side of the outer frame and the outer side of the inner frame. A steel reinforcement cage and a plurality of circumferentially-distributed positioning components are arranged in the pouring cavity, every two adjacent outer plates are spliced to form an outer splicing seam, every two adjacent inner plates are spliced to form an inner splicing seam, and the multiple inner splicing seams of the inner frame directly face the multiple outer splicing seams of the outer frame one to one. The two ends of the positioning component are clamped to the inner abutted seam position and the outer abutted seam position which are right opposite to each other respectively, exposed steel bars are embedded in the inner side of the outer plate, and the positioning component is provided with positioning holes matched with the exposed steel bars. The purpose of pre-fixing the outer plate through the positioning component is achieved through the inserting and matching mode between the positioning holes and the exposed steel bars. The box culvert has the effect that the box culvert is convenient to assemble.

Description

Technical Field

[0001] The present application relates to the field of box culverts, and in particular to an assembled composite box culvert. Background Art

[0002] A box culvert is a culvert constructed with reinforced concrete box sections, usually made of reinforced concrete or masonry, but reinforced concrete is more widely used. It consists of one or more square or rectangular sections.

[0003] Traditional box culvert construction is generally cast-in-place in parts, that is, after the base of the box culvert is treated, the bottom plate construction, wall construction, and top plate construction are carried out in sequence. The process involves three steps of demolding and erecting the formwork, which is cumbersome. The steel bar binding, formwork erection, and pouring are all carried out outdoors, which is greatly affected by the weather. Especially in the rainy season in the south, the probability of water accumulation in the foundation pit increases, and the pumping cost increases. Secondly, open-cut culverts usually involve foundation pit support measures, commonly used for steel sheet pile support. The steel sheet piles used are generally rented, and the cost increases with the length of use, which is not conducive to cost control. Compared with traditional cast-in-place box culverts, for the convenience of construction, a box culvert technology with integral prefabrication and integral assembly of the cross-section has been developed. The wall, top plate, and bottom plate of the box culvert are split, and the wall adopts the double-sided composite wall type, and the top plate adopts the composite floor type. After assembly, the overall structure is formed by post-casting. It can effectively improve production efficiency.

[0004] Regarding the above-mentioned related technologies, the applicant believes that there are the following defects: the box culvert is split into multiple plate-like structures, which have the problem of inconvenient positioning during assembly. A customized positioning mechanism is required to position and assemble each piece, which still has the problem of inconvenient assembly. Therefore, there is still room for improvement. Summary of the invention

[0005] In order to facilitate the assembly of box culverts, the present application provides an assembled composite box culvert.

[0006] The present application provides an assembled composite box culvert adopting the following technical solution:

[0007] A prefabricated composite box culvert comprises a plurality of outer panels and a plurality of inner panels, wherein the plurality of inner panels are combined to form an inner frame, and the plurality of outer panels are combined to form an outer frame around the outer periphery of the inner frame, wherein the inner side of the outer frame and the outer side of the inner frame form a circular casting chamber, wherein a steel cage and a plurality of circumferentially distributed positioning members are arranged in the casting chamber, wherein two adjacent outer panels are spliced ​​to form an outer seam, and adjacent inner panels are spliced ​​to form an inner seam, wherein the plurality of inner seams of the inner frame are opposite to the plurality of outer seams of the outer frame, and the two ends of the positioning member are respectively clamped at the inner seam positions and the outer seam positions opposite to each other, wherein the inner side of the outer panel is pre-embedded with exposed steel bars, and the positioning member is provided with positioning holes matched with the exposed steel bars, and the positioning member is pre-fixed to the outer panel by the plug-in matching mode between the positioning holes and the exposed steel bars.

[0008] By adopting the above technical scheme, the box culvert is split into multiple outer plates and inner plates, and the closed outer frame and inner frame are formed accordingly. The positioning member is used for pre-fixing the outer plate by plugging and matching the positioning holes of the positioning member with the exposed steel bars of the outer plate, thereby realizing the assembly of the outer frame. Then, the positioning member is used to pre-fix the outer seam of the outer frame and the inner seam of the inner frame by clamping, thereby pre-fixing the multiple inner plates of the inner frame, thereby realizing the assembly of the inner frame. There is no need to customize the box culvert positioning device, so as to facilitate the assembly of the prefabricated composite box culvert. In addition, the positioning mechanism is arranged between the outer seam and the inner seam to provide support for the splicing position, which is beneficial to improving the structural stability between the inner plate and the outer plate of the box culvert and reducing leakage.

[0009] Preferably, the positioning member includes a first angle steel, a second angle steel and a plurality of connecting rods connected between the first angle steel and the second angle steel, the first angle steel and the second angle steel are both arranged toward the inner frame, the outer right-angle surface of the first angle steel is attached to the inner sides of two adjacent outer plates, the inner right-angle surface of the second angle steel is attached to the outer sides of two adjacent inner plates, the positioning hole is arranged at the first angle steel, and the exposed steel bars of the outer plate are inserted into the positioning hole in a direction perpendicular to the outer right-angle surface of the first angle steel.

[0010] By adopting the above technical scheme, the exposed steel bars of the outer plate are inserted into the positioning holes along the direction perpendicular to the outer right-angle surface of the first angle steel, so as to facilitate the assembly of the outer plate and the positioning member. The first angle steel and the second angle steel are both right-angle structures, which are adapted to the rectangular structures of the inner frame and the outer frame. The first angle steel and the second angle steel are connected by a connecting rod. After completing the assembly steps of the outer frame and the positioning member, the second angle steel of the positioning member forms four right-angle limiters on the inner side of the outer frame, so as to clamp the inner plate between two adjacent second angle steels, which is beneficial to improving the assembly efficiency of the inner frame, while keeping the inner frame in the center position on the inner side of the outer frame, which is beneficial to improving the assembly quality of the prefabricated composite box culvert.

[0011] Preferably, the first angle steel and the second angle steel both extend from an opening on one side of the casting chamber to an opening on the other side of the casting chamber.

[0012] By adopting the above technical solution, the first angle steel strengthens the inner edge position of the outer frame, and the second angle steel strengthens the outer edge position of the inner frame, which is beneficial to improving the structural stability of the box culvert.

[0013] Preferably, the plurality of connecting rods of the positioning member are distributed at equal intervals along the extension direction of the first angle steel.

[0014] By adopting the above technical solution, the load generated during the pouring process is evenly distributed between the first angle steel and the second angle steel, which is beneficial to maintaining the stability of the inner frame and the outer frame.

[0015] Preferably, connecting steel bars are pre-embedded inside the outer panels, the connecting steel bars are close to the outer joints, and adjacent outer panels are butt-jointed and fixed via the connecting steel bars.

[0016] By adopting the above technical solution, connecting steel bars are pre-buried on the inner side of the outer plate, and two adjacent outer plates are locked by butting the connecting steel bars, which is beneficial to improving the structural stability of the outer frame.

[0017] Preferably, a first positioning steel bar is provided on the inner side of the outer frame, the first positioning steel bar is close to one side opening of the casting chamber, and one side of the steel cage is tied and fixed to the first positioning steel bar.

[0018] By adopting the above technical solution, the first positioning steel bar is set at one side opening of the casting chamber, so that the composite box culvert can be laid flat for assembly, and the outer frame is assembled first so that the first positioning steel bar is set lower. At this time, the steel cage is placed on the first positioning steel bar, and the first positioning steel bar plays a supporting role. The steel cage is fixed by being tied and fixed with the first positioning steel bar, which is beneficial to improving the installation efficiency and quality of the steel cage.

[0019] Preferably, a second positioning steel bar is arranged on the outer side of the inner frame, the second positioning steel bar is far away from the first positioning steel bar, and the steel cage is clamped between the first positioning steel bar and the second positioning steel bar.

[0020] By adopting the above technical solution, the steel cage is clamped between the first positioning steel bars and the second positioning steel bars, thereby restricting the steel cage, which is beneficial to improving the stability of the steel cage.

[0021] Preferably, the second positioning steel bar is tied and fixed to the steel cage.

[0022] By adopting the above technical solution, the second positioning steel bar is tied and fixed to the steel cage, thereby improving the connection stability between the inner frame and the steel cage, which is beneficial to improving the structural stability between the outer frame and the inner frame.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. The box culvert is split into multiple outer plates and inner plates, and the closed outer frame and inner frame are formed accordingly. The positioning member is used to pre-fix the outer plate by inserting and matching the positioning holes of the positioning member with the exposed steel bars of the outer plate, and the outer frame is assembled. Then, the positioning member is used to pre-fix the outer joints of the outer frame and the inner joints of the inner frame by clamping, so as to pre-fix the multiple inner plates of the inner frame and the inner frame is assembled. There is no need to customize the box culvert positioning device, so as to facilitate the assembly of the assembled composite box culvert.

[0025] 2. The positioning mechanism is set between the outer joint and the inner joint to provide support for the joint position, which is beneficial to improve the structural stability between the inner and outer plates of the box culvert and reduce slurry leakage;

[0026] 3. By inserting the exposed steel bars of the outer plate into the positioning holes in a direction perpendicular to the outer right-angle surface of the first angle steel, the outer plate and the positioning member can be assembled. The first angle steel and the second angle steel are both right-angle structures, which are adapted to the rectangular structures of the inner frame and the outer frame. The first angle steel and the second angle steel are connected by a connecting rod. After completing the assembly steps of the outer frame and the positioning member, the second angle steel of the positioning member forms four right-angle limiters on the inner side of the outer frame, so that the inner plate can be clamped between two adjacent second angle steels, which is beneficial to improving the assembly efficiency of the inner frame. At the same time, the inner frame is kept in the center position on the inner side of the outer frame, which is beneficial to improving the assembly quality of the prefabricated composite box culvert. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of an assembled composite box culvert according to an embodiment of the present application.

[0028] Figure 2 It is an exploded view of an assembled composite box culvert according to an embodiment of the present application.

[0029] Figure 3 yes Figure 2 A magnified schematic diagram of center A.

[0030] Explanation of the reference numerals: 1. outer frame; 11. outer plate; 12. outer joint; 13. first positioning steel bar; 14. connecting steel bar; 15. casing; 16. exposed steel bar; 2. inner frame; 21. inner plate; 22. inner joint; 23. second positioning steel bar; 3. positioning member; 31. first angle steel; 311. positioning hole; 32. connecting rod; 33. second angle steel; 4. steel cage; 5. casting chamber. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-3 This application is described in further detail.

[0032] The present application embodiment discloses an assembled composite box culvert, referring to Figure 1 and Figure 2, including a plurality of outer panels 11 and a plurality of inner panels 21, wherein the plurality of inner panels 21 are enclosed to form an inner frame 2, and the plurality of outer panels 11 are enclosed around the outer periphery of the inner frame 2 to form an outer frame 1, and a circular casting chamber 5 is formed between the inner side of the outer frame 1 and the outer side of the inner frame 2. In this embodiment, there are four outer panels 11 and four inner panels 21, and both ends of the outer panels 11 and the inner panels 21 are provided with 45° chamfered surfaces so as to splice the inner frame 2 and the outer frame 1 to form a rectangular frame structure. The chamfered surfaces between two adjacent outer panels 11 are spliced ​​to form an outer seam 12, and the outer seam 12 is distributed at the corner position of the outer frame 1. The chamfered surfaces between two adjacent inner panels 21 are spliced ​​to form an inner seam 22, and the inner seam 22 is distributed at the corner position of the inner frame 2, and the four inner seams 22 of the inner frame 2 are directly opposite to the four outer seams 12 of the outer frame 1.

[0033] Reference Figure 2 and Figure 3 In this embodiment, a steel cage 4 and a plurality of circumferentially distributed positioning members 3 are provided in the casting chamber 5, wherein the two ends of the positioning members 3 are respectively clamped at the positions of the inner joint 22 and the outer joint 12 facing each other. Specifically, the positioning members 3 include a first angle steel 31, a second angle steel 33, and a plurality of connecting rods 32 connected between the first angle steel 31 and the second angle steel 33, and the first angle steel 31 and the second angle steel 33 are both arranged toward the inner frame 2. The outer right-angle surface of the first angle steel 31 is attached to the inner sides of the two adjacent outer plates 11, and the inner right-angle surface of the second angle steel 33 is attached to the outer sides of the two adjacent inner plates 21.

[0034] A plurality of exposed steel bars 16 are pre-embedded on the inner side of the outer plate 11, and the exposed steel bars 16 are placed on both sides of the outer plate 11 and spaced apart along the length direction of the outer joint 12. The two outer right-angle surfaces of the first angle steel 31 are penetrated by a plurality of positioning holes 311 adapted to the exposed steel bars 16, and the exposed steel bars 16 of the outer plate 11 are inserted into the positioning holes 311 in a direction perpendicular to the outer right-angle surface of the first angle steel 31. The positioning member 3 is pre-fixed to the outer plate 11 by the insertion and matching mode between the positioning holes 311 and the exposed steel bars 16.

[0035] The first angle steel 31 and the second angle steel 33 of the positioning member 3 both extend from an opening on one side of the casting chamber 5 to an opening on the other side of the casting chamber 5. The plurality of connecting rods 32 of the positioning member 3 are evenly spaced along the extension direction of the first angle steel 31. The two ends of the connecting rods 32 are welded and fixed to the inner side of the first angle steel 31 and the outer side of the second angle steel 33. The first angle steel 31 reinforces the inner edge position of the outer frame 1, and the second angle steel 33 reinforces the outer edge position of the inner frame 2. The load generated during the casting process is evenly dispersed to the first angle steel 31 and the second angle steel 33 through the connecting rods 32, which is beneficial to improving the stability of the inner frame 2 and the outer frame 1.

[0036] A plurality of connecting steel bars 14 are pre-embedded on the inner side of the outer panel 11. The connecting steel bars 14 are disposed on both sides of the outer panel 11 and close to the outer joint 12. The connecting steel bars 14 are spaced apart along the length direction of the outer joint 12 and staggered with the connecting rod 32. Adjacent outer panels 11 are fixed together by connecting steel bars 14, which is beneficial to improving the structural stability of the outer frame 1.

[0037] A plurality of first positioning steel bars 13 are arranged on the inner side of the outer frame 1. The plurality of first positioning steel bars 13 are spaced apart along the length direction of the outer plate 11 and are arranged close to an opening on one side of the casting chamber 5. One side of the steel cage 4 is tied and fixed to the first positioning steel bars 13, which is beneficial to improving the installation efficiency and quality of the steel cage 4.

[0038] A plurality of second positioning steel bars 23 are pre-embedded on the outside of the inner frame 2. The plurality of second positioning steel bars 23 are spaced apart along the length direction of the inner plate 21 and are arranged away from the first positioning steel bars 13. The second positioning steel bars 23 are tied and fixed to the steel cage 4. The steel cage 4 is clamped between the first positioning steel bars 13 and the second positioning steel bars 23, which is beneficial to improving the structural stability between the outer frame 1, the inner frame 2 and the steel cage 4.

[0039] The implementation principle of an assembled composite box culvert in the embodiment of the present application is:

[0040] When performing the assembly steps of the composite box culvert, firstly set up four groups of positioning components 3 on the construction ground, then hoist the outer plate 11 located at the bottom of the outer frame 1 to an upright state, and then complete the installation steps of the first angle steel 31 with the two groups of positioning components 3. The exposed steel bars 16 of the outer plate 11 are inserted into the positioning holes 311 in a direction perpendicular to the outer right-angle surface of the first angle steel 31, and the positioning components 3 are used to pre-fix the outer plate 11 through the plug-in cooperation between the positioning holes 311 and the exposed steel bars 16. Then, the outer panels 11 located on both sides of the outer frame 1 are hoisted to an upright state and assembled to the two sides of the outer panels 11 at the bottom of the outer frame 1 respectively, and the exposed steel bars 16 of the outer panels 11 and the positioning holes 311 of the first angle steel 31 are connected at the same time. Finally, the outer panel 11 located at the top of the outer frame 1 is hoisted to an upright state and assembled between the outer panels 11 on both sides of the outer frame 1, and the exposed steel bars 16 of the outer panels 11 and the positioning holes 311 of the first angle steel 31 are connected at the same time, and finally a closed outer frame 1 is formed.

[0041] Then, the connecting steel bars 14 between adjacent outer plates 11 are bent between the first angle steel 31 and the second angle steel 33 of the positioning member 3, and are sleeved with a sleeve 15, wherein a through opening is opened on the outer peripheral surface of the sleeve 15, and the extension direction of the through opening is consistent with the length direction of the sleeve 15, so that the cross-section of the sleeve 15 is a non-closed arc shape, and the sleeve 15 has a thin wall thickness and is easy to deform, so as to facilitate the sleeve connection step of the sleeve 15 and the connecting steel bar 14. After the sleeve connection step is completed, the sleeve 15 and the connecting steel bar 14 are welded and fixed, thereby completing the docking step of the connecting steel bars 14 between adjacent outer plates 11.

[0042] Next, four groups of steel cages 4 are hung and placed on the first positioning steel bars 13 inside the four outer plates 11, and then the steel cages 4 and the first steel bars are tied together.

[0043] Then, the inner plates 21 are hoisted one by one, and the inner plates 21 are hoisted between the adjacent second angle steels 33, and finally enclosed to form the inner frame 2. The second positioning steel bars 23 of the inner plate 21 are against the upper part of the steel cage 4, and the low-position positioning steel bars and the steel cage 4 are tied and fixed, thereby completing the assembly steps of the inner frame 2, the outer frame 1 and the steel cage 4.

[0044] Finally, the composite box culvert is hoisted to an upright state, and two end formworks are used to respectively block the openings on both sides of the casting chamber 5, and then concrete is poured into the casting chamber 5 to form a complete assembled composite box culvert segment.

[0045] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An assembled composite box culvert, characterized in that: The invention comprises a plurality of outer plates (11) and a plurality of inner plates (21), wherein the plurality of inner plates (21) are combined to form an inner frame (2), wherein the plurality of outer plates (11) are combined around the outer periphery of the inner frame (2) to form an outer frame (1), wherein the inner side of the outer frame (1) and the outer side of the inner frame (2) form a circular casting chamber (5), wherein a steel cage (4) and a plurality of circumferentially distributed positioning components (3) are arranged in the casting chamber (5), wherein two adjacent outer plates (11) are spliced ​​to form an outer splicing seam (12), and adjacent inner plates (21) are spliced ​​to form an inner splicing seam (22), wherein the inner frame The plurality of inner joints (22) of the outer frame (2) and the plurality of outer joints (12) of the outer frame (1) are aligned one by one, and the two ends of the positioning member (3) are respectively clamped at the mutually opposed positions of the inner joints (22) and the outer joints (12), and the inner side of the outer plate (11) is pre-embedded with exposed steel bars (16), and the positioning member (3) is provided with positioning holes (311) adapted to the exposed steel bars (16), and the positioning member (3) is pre-fixed to the outer plate (11) by plugging and fitting between the positioning holes (311) and the exposed steel bars (16).

2. The assembled composite box culvert according to claim 1, characterized in that: The positioning component (3) comprises a first angle steel (31), a second angle steel (33) and a plurality of connecting rods (32) connected between the first angle steel (31) and the second angle steel (33); the first angle steel (31) and the second angle steel (33) are both arranged toward the inner frame (2); the outer right-angle surface of the first angle steel (31) is attached to the inner sides of two adjacent outer plates (11); the inner right-angle surface of the second angle steel (33) is attached to the outer sides of two adjacent inner plates (21); the positioning hole (311) is arranged at the first angle steel (31); and the exposed steel bar (16) of the outer plate (11) is inserted into the positioning hole (311) in a direction perpendicular to the outer right-angle surface of the first angle steel (31).

3. The assembled composite box culvert according to claim 2, characterized in that: The first angle steel (31) and the second angle steel (33) both extend from an opening on one side of the casting chamber (5) to an opening on the other side of the casting chamber (5).

4. The assembled composite box culvert according to claim 3 is characterized in that: The plurality of connecting rods (32) of the positioning member (3) are distributed at equal intervals along the extension direction of the first angle steel (31).

5. The assembled composite box culvert according to claim 1, characterized in that: Connecting steel bars (14) are pre-buried inside the outer panels (11), the connecting steel bars (14) are close to the outer joints (12), and adjacent outer panels (11) are butt-jointed and fixed via the connecting steel bars (14).

6. The assembled composite box culvert according to claim 1, characterized in that: A first positioning steel bar (13) is arranged on the inner side of the outer frame (1), the first positioning steel bar (13) is close to one side opening of the casting chamber (5), and one side of the steel cage (4) is tied and fixed to the first positioning steel bar (13).

7. The assembled composite box culvert according to claim 6, characterized in that: A second positioning steel bar (23) is arranged on the outer side of the inner frame (2), the second positioning steel bar (23) is far away from the first positioning steel bar (13), and the steel cage (4) is clamped between the first positioning steel bar (13) and the second positioning steel bar (23).

8. The assembled composite box culvert according to claim 7, characterized in that: The second positioning steel bars (23) are tied and fixed to the steel cage (4).

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