External reinforced arch culvert structure

Abstract

The utility model discloses an externally reinforced arch culvert structure, which comprises an arch culvert structure, the arch culvert structure comprises a reinforced concrete base and a plurality of fixed corrugated steel structures, the fixed corrugated steel structures are arch-shaped, and the plurality of fixed corrugated steel structures are spliced into a duct along the extension direction of the reinforced concrete base; the force unloading structure comprises lower force unloading layers located on the two sides of the side arch of the fixed corrugated steel structure and upper force unloading layers located on the two sides of the top arch of the fixed corrugated steel structure. The lower unloading layer wraps the side arch of the fixed corrugated steel structure in a slope shape; the upper force unloading layer is in a slope shape with the side face protruding and wraps and fixes the two sides of the top arch of the corrugated steel structure. The reinforcing structure is arranged at the top end of the arch culvert structure. The arch culvert structure can be prevented from being in a pressed state for a long time, and the damage problem of the arch culvert structure is reduced; the stress of the arch culvert structure can be relatively uniform, the pressure of the culvert top of the arch culvert structure is reduced, and the load reducing effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of road arch culverts, in particular to an externally reinforced arch culvert structure. Background Art

[0002] An arch culvert is a type of culvert or passageway used for water, people or small motorcycles to pass under the road. It has an arched top plate. Generally speaking, it utilizes the good compression resistance of the arch structure and is suitable for situations where the upper fill embankment of the culvert is high.

[0003] In the prior art, reinforced concrete arch culverts are commonly used in arch culvert construction. However, arch culvert diseases caused by insufficient bearing capacity of the arch culvert structure and improper foundation treatment occur frequently. When the foundation settles unevenly, cracks are easily generated, causing structural damage, and the arch culvert structure will be greatly deformed, further causing ground subsidence, destroying the upper pavement structure of the arch culvert, and increasing the risk of traffic accidents. The assembled corrugated steel arch culvert structure with overlapped plates is technically restricted by the waveform and thickness of the corrugated steel plate, and the bearing capacity of the assembled corrugated steel arch culvert structure is difficult to meet the compressive strength requirements of culvert projects. Therefore, in order to solve the above technical problems, we propose an externally reinforced arch culvert structure. Utility Model Content

[0004] In order to overcome the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide an externally reinforced arch culvert structure to solve the problems raised by the above-mentioned background technology.

[0005] The technical solution adopted by the utility model to solve the technical problem is: an externally reinforced arch culvert structure, comprising:

[0006] The arch culvert structure comprises a reinforced concrete base and a fixed corrugated steel structure, wherein the fixed corrugated steel structure is in an arch shape, and a plurality of the fixed corrugated steel structures are spliced ​​into a culvert along the extension direction of the reinforced concrete base;

[0007] The force unloading structure comprises a lower force unloading layer located on both sides of the side arches of the fixed corrugated steel structure and an upper force unloading layer located on both sides of the top arches of the fixed corrugated steel structure;

[0008] The lower stress-relieving layer covers the side arch of the fixed corrugated steel structure in a slope shape;

[0009] The upper unloading layer is in the shape of a slope with raised sides, covering both sides of the top arch of the fixed corrugated steel structure;

[0010] The reinforcement structure is installed at the top of the arch culvert structure.

[0011] As a further improvement of the present utility model: the fixed corrugated steel structure includes an I-shaped steel, an outer corrugated steel and an inner corrugated steel, and a plurality of the I-shaped steels are arranged at intervals along the extension direction of the reinforced concrete base, the outer corrugated steel is placed between two I-shaped steels, and the outer corrugated steel is fixedly connected to the upper side of the side groove of the I-shaped steel, the inner corrugated steel is placed between two I-shaped steels, and the inner corrugated steel is fixedly connected to the lower side of the side groove of the I-shaped steel, and the outer corrugated steel is arranged parallel to the inner corrugated steel.

[0012] As a further improvement of the utility model: a connecting structure is also provided between the outer corrugated steel and the inner corrugated steel, and arc plates matching the corrugations of the outer corrugated steel and the inner corrugated steel are respectively provided at both ends of the connecting structure, and the arc plates are fixedly installed on the inner sides of the outer corrugated steel and the inner corrugated steel, and a plurality of connecting rods are also provided between the outer corrugated steel and the inner corrugated steel, and the plurality of connecting rods fix the outer corrugated steel and the inner corrugated steel by connecting the arc plates.

[0013] As a further improvement of the present invention: a filling layer is further provided between the outer corrugated steel and the inner corrugated steel.

[0014] As a further improvement of the utility model: the lower unloading layer includes a lower medium layer and a supporting structure, the bottom end of the supporting structure is fixedly connected to the ground, the other end of the supporting structure is fixedly connected to a reinforced concrete base, and the supporting structure is arranged in the medium layer.

[0015] As a further improvement of the utility model: the supporting structure is an arc-shaped reinforcing rib protruding toward the outside of the arch culvert.

[0016] As a further improvement of the utility model: the upper stress-relieving layer comprises an upper medium layer, reinforcing ribs are arranged in the upper medium layer, and the upper medium layer is connected to the lower medium layer.

[0017] As a further improvement of the present utility model: the reinforcement structure is configured as a steel-plastic composite grid, and the reinforcement structure comprises carbon spring steel wire and polyethylene resin coating the carbon spring steel wire.

[0018] As a further improvement of the utility model: the ribs of the reinforcement structure are arranged as plane longitude and latitude right-angled grids, and the longitudinal and transverse ribs of the reinforcement structure are welded at the joints.

[0019] As a further improvement of the utility model: the reinforcement structure is arranged on the top of the arch culvert structure in a suspended and transversely extending manner.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] The utility model is formed by overlapping a plurality of fixed corrugated steel structures, and the fixed corrugated steel structure is connected and fixed by inner and outer layers of corrugated steel and I-shaped steel, so that the overlapped fixed corrugated steel structure is more stable and the sealing of the fixed corrugated steel structure is improved; by adding a force unloading structure on the outside of the arch culvert structure, the force unloading structure tensions the transverse prestress, so as to avoid the arch culvert structure being in a state of compression for a long time and reduce the damage problem of the arch culvert structure; by using a reinforcement structure at the top of the arch culvert structure, the stress distribution of the fixed fill of the arch culvert is readjusted, so that the arch culvert structure is relatively evenly stressed, and the pressure on the top of the arch culvert structure is reduced, which has a load reduction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the utility model.

[0023] Figure 2 It is a structural schematic diagram of the utility model.

[0024] Figure 3 It is a structural schematic diagram of the utility model.

[0025] Figure 4 It is a structural schematic diagram of the utility model.

[0026] Numbers in the figure: 1. Arch culvert structure, 11. Reinforced concrete base, 111. I-shaped steel, 112. External corrugated steel, 113. Internal corrugated steel, 114. Arc plate, 115. Connecting rod, 12. Fixed corrugated steel structure, 2. Unloading structure, 21. Lower unloading layer, 22. Upper unloading layer, 3. Reinforcement structure, 31. Steel-plastic composite grille. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in combination with the specific embodiments of the utility model and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] The present invention is further described with reference to the accompanying drawings and embodiments:

[0029] An externally reinforced arch culvert structure, comprising:

[0030] The arch culvert structure 1 comprises a reinforced concrete base 12 and a fixed corrugated steel structure 11, wherein the fixed corrugated steel structure 11 is in an arch shape, and a plurality of the fixed corrugated steel structures 11 are spliced ​​into a culvert along the extension direction of the reinforced concrete base 12;

[0031] The force unloading structure 2 comprises a lower force unloading layer 21 located on both sides of the side arches of the fixed corrugated steel structure 11 and an upper force unloading layer 22 located on both sides of the top arches of the fixed corrugated steel structure 11;

[0032] The lower stress-relieving layer 21 is in a slope shape and covers the side arch of the fixed corrugated steel structure 11;

[0033] The upper stress relief layer 22 is in a slope shape with raised sides and covers both sides of the top arch of the fixed corrugated steel structure 11;

[0034] The reinforcement structure 3 is arranged on the top of the arch culvert structure 1.

[0035] According to the externally reinforced arch culvert structure 1 of the present application, the present application mainly adopts the arch culvert structure 1, the unloading structure 2 and the reinforcement structure 3, wherein the arch culvert structure 1 includes a reinforced concrete base 12 and a fixed corrugated steel structure 11, and a plurality of fixed corrugated steel structures 11 are installed and fixed along the reinforced concrete base 12 to form a culvert, and the reinforced concrete base 12 has an installation and fixing effect on the fixed corrugated steel structure 11, thereby enhancing the connection strength of the fixed corrugated steel structure 11, and at the same time ensuring the installation parallelism of the fixed corrugated steel structure 11, so that the overall strength of the culvert is the same, and a unloading structure 2 is added on the outside of the arch culvert structure 1, and the unloading structure 2 includes an upper unloading layer 22 and a lower unloading layer 21, and the lower unloading layer 21 is arranged on the fixed corrugated steel structure 11 The bottom of the side surface, the upper unloading layer 22 is arranged at the top of the side surface of the fixed corrugated steel structure 11, and the soil pressure borne by the lower unloading layer 21 is different from that of the upper unloading layer 22. The structure is in a slope shape inclined toward the arch crown, which can respectively cope with the soil pressure at different depths and reduce the use of materials. Since the arch crown of the arch culvert is a protruding part, where the structure undergoes a sudden change in geometric shape and external dimensions, it will cause a significant increase in stress in the local range, thereby causing the stress of the arch crown to increase. Therefore, a reinforcement structure 3 is added to the arch culvert structure 1 and is arranged at the top of the arch culvert structure 1. Through the reinforcement effect of the reinforcement structure 3 on the arch crown fill, part of the stress of the culvert top fill is transferred to the culvert side fill, so that the vertical soil pressure on the culvert top is reduced.

[0036] According to one embodiment of the present application, the fixed corrugated steel structure 11 includes an I-shaped steel 111, an outer corrugated steel 112 and an inner corrugated steel 113. The I-shaped steel 111 is arranged in multiple intervals along the extension direction of the reinforced concrete base 12. The outer corrugated steel 112 is placed between two I-shaped steels 111, and the outer corrugated steel 112 is fixedly connected to the upper side of the side groove of the I-shaped steel 111. The inner corrugated steel 113 is placed between the two I-shaped steels 111, and the inner corrugated steel 113 is fixedly connected to the lower side of the side groove of the I-shaped steel 111. The outer corrugated steel 112 and the inner corrugated steel 113 are arranged in parallel. The fixed corrugated steel structure 11 of the present application uses an I-shaped steel 111 as a main support in the structure, and a plurality of I-shaped steels 111 are arranged at intervals to improve the compressive strength of the fixed corrugated steel structure 11. The fixed corrugated steel structure 11 uses an inner and outer layer of corrugated steel to connect and fix with the I-shaped steel 111, so that the overlapped fixed corrugated steel structure 11 is more stable and the sealing of the fixed corrugated steel structure 11 is improved.

[0037] According to one embodiment of the present application, a connecting structure is further provided between the outer corrugated steel 112 and the inner corrugated steel 113, and arc plates 114 matching the corrugations of the outer corrugated steel 112 and the inner corrugated steel 113 are respectively provided at both ends of the connecting structure, and the arc plates 114 are fixedly installed on the inner sides of the outer corrugated steel 112 and the inner corrugated steel 113, and a plurality of connecting rods 115 are further provided between the outer corrugated steel 112 and the inner corrugated steel 113, and the plurality of connecting rods 115 are connected to the arc plates 114 to fix the outer corrugated steel 112 and the inner corrugated steel 113. A plurality of connection structures are added between the outer corrugated steel 112 and the inner corrugated steel 113, and the connection structures connect and fix the outer corrugated steel 112 and the inner corrugated steel 113 so that the outer corrugated steel 112 and the inner corrugated steel 113 become a whole. When the outer corrugated steel 112 is subjected to pressure, the pressure can be transmitted to the inner corrugated steel 113, so that the pressure is dispersed, thereby increasing the service life of the arch culvert structure 1.

[0038] According to an embodiment of the present application, a filling layer is further provided between the outer corrugated steel 112 and the inner corrugated steel 113. The filling layer can be made of fireproof material or load-bearing material according to the installation environment.

[0039] According to an embodiment of the present application, the lower unloading layer 21 includes a lower medium layer and a support structure, the bottom end of the support structure is fixedly connected to the ground, the other end of the support structure is fixedly connected to the reinforced concrete base 12, and the support structure is arranged in the medium layer;

[0040] The supporting structure is an arc-shaped reinforcement rib protruding toward the outside of the arch culvert;

[0041] The upper stress relief layer 22 includes an upper dielectric layer, in which reinforcing ribs are arranged, and the upper dielectric layer is connected to the lower dielectric layer.

[0042] In the present application, the lower unloading layer 21 is arranged at the bottom of the side of the fixed corrugated steel structure 11, and the upper unloading layer 22 is arranged at the top of the side of the fixed corrugated steel structure 11. The lower unloading layer 21 and the upper unloading layer 22 are subjected to different soil pressures, and the structure is in the shape of a slope inclined toward the arch, which can respectively cope with soil pressures of different depths and reduce the use of materials.

[0043] According to one embodiment of the present application, the reinforcement structure 3 is configured as a steel-plastic composite grid 31, and the reinforcement structure 3 includes carbon spring steel wire and polyethylene resin coating the carbon spring steel wire;

[0044] The ribs of the reinforcement structure 3 are arranged as plane longitude and latitude right angle grids, and the longitudinal and transverse ribs of the reinforcement structure 3 are welded at their joints. The steel-plastic composite grid 31 is tensilely supported by steel wires, and the grid mesh has an enhanced locking force on the fill. The ribs are composed of carbon spring steel wires and polyethylene resin coating the carbon spring steel wires.

[0045] The reinforcement structure 3 is suspended and laterally extended at the top of the arch culvert structure 1. Through the reinforcement of the arch top fill by the reinforcement structure 3, part of the stress of the culvert top fill is transferred to the culvert side fill, so that the vertical soil pressure on the culvert top is reduced.

[0046] In summary, after reading the utility model document, ordinary technicians in this field can make various other corresponding transformation schemes based on the technical scheme and technical concept of the utility model without creative mental labor, which all fall within the scope of protection of the utility model.

Claims

1. An externally reinforced arch culvert structure, characterized in that: include: The arch culvert structure comprises a reinforced concrete base and a fixed corrugated steel structure, wherein the fixed corrugated steel structure is in an arch shape, and a plurality of the fixed corrugated steel structures are spliced ​​into a culvert along the extension direction of the reinforced concrete base; The force unloading structure comprises a lower force unloading layer located on both sides of the side arches of the fixed corrugated steel structure and an upper force unloading layer located on both sides of the top arches of the fixed corrugated steel structure; The lower stress-relieving layer covers the side arch of the fixed corrugated steel structure in a slope shape; The upper unloading layer is in the shape of a slope with raised sides, covering both sides of the top arch of the fixed corrugated steel structure; The reinforcement structure is installed at the top of the arch culvert structure.

2. The externally reinforced arch culvert structure according to claim 1, characterized in that: The fixed corrugated steel structure includes an I-shaped steel, an outer corrugated steel and an inner corrugated steel. A plurality of the I-shaped steels are arranged at intervals along the extension direction of the reinforced concrete base. The outer corrugated steel is placed between two I-shaped steels and fixedly connected to the upper side of the groove on the side of the I-shaped steel. The inner corrugated steel is placed between two I-shaped steels and fixedly connected to the lower side of the groove on the side of the I-shaped steel. The outer corrugated steel is arranged in parallel with the inner corrugated steel.

3. The externally reinforced arch culvert structure according to claim 2, characterized in that: A connecting structure is also provided between the outer corrugated steel and the inner corrugated steel, and arc plates matching the corrugations of the outer corrugated steel and the inner corrugated steel are respectively provided at both ends of the connecting structure, and the arc plates are fixedly installed on the inner sides of the outer corrugated steel and the inner corrugated steel, and a plurality of connecting rods are also provided between the outer corrugated steel and the inner corrugated steel, and the plurality of connecting rods fix the outer corrugated steel and the inner corrugated steel by connecting the arc plates.

4. The externally reinforced arch culvert structure according to claim 3, characterized in that: A filling layer is also arranged between the outer corrugated steel and the inner corrugated steel.

5. The externally reinforced arch culvert structure according to claim 4, characterized in that: The lower stress-relieving layer comprises a lower medium layer and a supporting structure. The bottom end of the supporting structure is fixedly connected to the ground, and the other end of the supporting structure is fixedly connected to a reinforced concrete base. The supporting structure is arranged in the medium layer.

6. The externally reinforced arch culvert structure according to claim 5, characterized in that: The supporting structure is an arc-shaped reinforcing rib protruding toward the outside of the arch culvert.

7. The externally reinforced arch culvert structure according to claim 6, characterized in that: The upper stress-relieving layer comprises an upper dielectric layer, reinforcing ribs are arranged in the upper dielectric layer, and the upper dielectric layer is connected to the lower dielectric layer.

8. The externally reinforced arch culvert structure according to claim 7, characterized in that: The reinforcement structure is configured as a steel-plastic composite grid, and the reinforcement structure comprises carbon spring steel wire and polyethylene resin coating the carbon spring steel wire.

9. The externally reinforced arch culvert structure according to claim 8, characterized in that: The ribs of the reinforcement structure are arranged as plane longitude and latitude right-angled grids, and the longitudinal and transverse ribs of the reinforcement structure are welded at their joints.

10. The externally reinforced arch culvert structure according to claim 9, characterized in that: The reinforcement structure is arranged on the top of the arch culvert structure in a suspended and transversely extending manner.

Images