Corrugated steel pipe culvert anti-abrasion protection structure

Abstract

The utility model relates to the technical field of culverts, and discloses a steel corrugated pipe culvert anti-abrasion protection structure which comprises a culvert body, a wear-resisting plate is arranged at the bottom of the culvert body and axially fixed to the culvert body through a second fastener, and a concrete layer is arranged between the wear-resisting plate and the inner surface of the culvert body. And a reinforcing mesh is arranged in the concrete layer to enhance the wear resistance of the concrete layer. The wear-resisting plate and the concrete layer are arranged at the bottom of the culvert body, the double protection of the wear-resisting plate and the concrete layer effectively prevents gravel and the like in water flow from abrading and damaging the zinc coating, the overall service life of the steel corrugated pipe culvert structure is prolonged, and the stability and the safety of an upper pavement structure are guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to culvert technical field more specifically, relate to a kind of steel corrugated pipe culvert anti-abrasion protection structure. BACKGROUND

[0002] A large number of culvert structures are applied in road and bridge construction, and the steel corrugated pipe culvert has the advantages of light weight, convenient transportation, simple construction, short construction period, good deformation resistance and fatigue resistance, so it gradually replaces the traditional concrete culvert structure.

[0003] However, in mountainous areas, due to the large height difference, the water flow in some areas is large, and the sand and gravel mixed in the rainstorm and debris flow can cause abrasion and damage to the corrugated structure on the inner surface of the steel corrugated pipe, resulting in the destruction of the zinc plating layer at the bottom of the steel corrugated pipe culvert structure, and long-term abrasion can affect the overall service life of the culvert and pose a safety hazard to the stability of the road surface structure above the culvert.

[0004] Therefore, how to prevent the zinc plating layer at the bottom of the steel corrugated pipe culvert structure from being damaged is a problem that needs to be solved by those skilled in the art. UTILITY MODEL CONTENT

[0005] Therefore, the utility model aims to provide a steel corrugated pipe culvert anti-abrasion protection structure, which is provided with a wear-resistant plate and a concrete layer at the bottom of the culvert body, effectively preventing the sand and gravel in the water flow from damaging the zinc plating layer, and improving the overall service life of the steel corrugated pipe culvert structure and ensuring the stability and safety of the road surface structure above.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] A steel corrugated pipe culvert anti-abrasion protection structure, comprising a culvert body, a wear-resistant plate is provided at the bottom of the culvert body, the wear-resistant plate is axially fixed to the culvert body by a second fastener, and a concrete layer is provided between the inner surfaces of the wear-resistant plate and the culvert body, and a steel mesh is provided in the concrete layer to enhance the wear resistance of the concrete layer.

[0008] Preferably, the second fasteners are uniformly distributed along the circumferential direction of the culvert body, and the second fasteners are uniformly distributed along the axial direction of the culvert body.

[0009] Preferably, the center of the wear-resistant plate is the same as the center of the culvert body, and the corresponding central angle of the wear-resistant plate is 120°-180°.

[0010] Preferably, the wear plate is provided with a release layer relative to the inner surface of the concrete layer, the release layer is used to avoid the wear plate from adhering to the concrete layer, so that the wear plate can be replaced when it is damaged.

[0011] Preferably, the culvert body is formed by a plurality of arc-shaped steel corrugated plates, and two adjacent steel corrugated plates are connected by first fasteners which are uniformly distributed along the axial direction of the steel corrugated plate.

[0012] Preferably, two adjacent rows of the steel corrugated plates are arranged in a staggered manner, so that the axial connection of the steel corrugated plates in the same row is opposite to the middle part of the steel corrugated plates in the other row.

[0013] Preferably, a sealing gasket is arranged between two adjacent steel corrugated plates which are connected to each other, and the sealing gasket is used to enhance the sealing performance of the joint of the culvert body.

[0014] Preferably, the second fastener is arranged at the crest of the steel corrugated plate, so as to reduce the connection distance of the wear plate to the steel corrugated plate.

[0015] Preferably, the steel corrugated plate is provided with a second mounting hole for mounting the second fastener, and the steel corrugated plate is provided with a sealing gasket outside the second mounting hole, and the second fastener is connected to the wear plate in sequence through the sealing gasket and the steel corrugated plate.

[0016] Preferably, the first fastener and the second fastener each include a high-strength long bolt and a fastening nut.

[0017] The steel corrugated pipe culvert anti-erosion protection structure provided by the utility model realizes double protection of the galvanized layer of the inner surface of the bottom of the culvert body, avoids that sand and stones in the water flow erode and damage the galvanized layer, improves the overall service life of the steel corrugated pipe culvert structure, and guarantees the stability and safety of the upper road surface structure. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only the embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative labor.

[0019] Figure 1 It is a sectional view of the steel corrugated pipe culvert anti-erosion protection structure provided by the utility model in the axial direction.

[0020] Figure 2A local schematic view of the anti-abrasion protection structure of the steel corrugated pipe culvert;

[0021] Figure 3 A schematic view of the structure of the anti-abrasion protection structure of the steel corrugated pipe culvert in the circumferential direction;

[0022] Figure 4 A schematic view of the lap principle of the culvert body;

[0023] Figure 5 A local sectional view of the culvert body in the axial direction.

[0024] Figures 1-5 In the middle:

[0025] 1-culvert body; 11-steel corrugated plate; 12-sealing gasket; 2-concrete layer; 21-steel mesh; 3-wear-resistant plate; 4-high-strength long bolt; 5-fastening nut, 6-washer. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0027] The core of the utility model is to provide an anti-abrasion protection structure of a steel corrugated pipe culvert, which is provided with a wear-resistant plate and a concrete layer at the bottom of the culvert body, so that the abrasion and damage of the galvanized layer by sand and stones in the water flow are effectively avoided, and the overall service life of the steel corrugated pipe culvert structure is improved, and the stability and safety of the upper road surface structure are ensured.

[0028] The anti-abrasion protection structure of the steel corrugated pipe culvert provided by the utility model comprises a culvert body 1, the bottom of the culvert body 1 is provided with a wear-resistant plate 3, the wear-resistant plate 3 is axially fixed to the culvert body 1 through a second fastener, and a concrete layer 2 is arranged between the wear-resistant plate 3 and the inner surface of the culvert body 1, and a steel mesh 21 is arranged in the concrete layer 2 to enhance the wear resistance of the concrete layer 2.

[0029] The material, structure and size of the culvert body 1 can be determined according to the actual production needs of the existing steel corrugated pipe culvert, and will not be described here.

[0030] In order to avoid the direct contact and abrasion of sand and stones in the water flow with the galvanized layer of the inner surface of the culvert body 1, the wear-resistant plate 3 is arranged at the bottom of the culvert body 1, the wear-resistant plate 3 is axially fixed to the culvert body 1 through a second fastener, and the second fastener can be specifically provided as a high-strength long bolt 4, a pin and the like;

[0031] In order to stably install the wear-resistant plate 3 in the culvert body 1, preferably, the second fasteners are uniformly distributed along the circumferential direction of the culvert body 1 and are uniformly distributed along the axial direction of the culvert body 1, and the circumferential spacing and the axial spacing of the second fasteners can be determined according to the type and size of the second fastener in actual production and the connection strength requirement of the wear-resistant plate 3 and the culvert body 1.

[0032] The wear-resistant plate 3 is preferably a steel plate, which has high structural strength, good wear resistance and long service life; the thickness of the wear-resistant plate 3 needs to be determined according to the material and design performance requirement of the wear-resistant plate 3 to ensure that the service life of the wear-resistant plate 3 is qualified.

[0033] The wear-resistant plate 3 and the inner surface of the culvert body 1 are also provided with a concrete layer 2, which can continue to protect the galvanized layer of the culvert body 1 after the wear-resistant plate 3 is damaged; considering that the wear resistance of the concrete layer 2 is poor, a steel mesh 21 and the like are usually arranged in the concrete layer 2 as a skeleton structure of the concrete layer 2 to improve the strength and wear resistance of the concrete layer 2.

[0034] The type, model and thickness of the concrete layer 2 and the type, model and distribution of the steel mesh 21 are determined according to the design performance requirement in actual production, which will not be described here.

[0035] In the embodiment, the bottom of the culvert body 1 is provided with the wear-resistant plate 3 and the concrete layer 2, which realizes double protection of the galvanized layer of the inner surface of the bottom of the culvert body 1, avoids the wear and damage of the galvanized layer by sand and stones in the water flow, improves the overall service life of the steel corrugated pipe culvert structure, and guarantees the stability and safety of the upper road surface structure.

[0036] Preferably, in order to facilitate the installation of the wear-resistant plate 3, the center of the wear-resistant plate 3 is arranged to be the same as the center of the culvert body 1, which not only facilitates the control of the distance between the wear-resistant plate 3 and the inner surface of the culvert body 1, but also avoids the displacement of the center of gravity of the steel corrugated pipe culvert structure caused by the distance between the wear-resistant plate 3 and the culvert body 1, which further affects the stability and safety of the upper road surface structure.

[0037] In addition, considering the requirements of anti-erosion and cost, the corresponding central angle of the wear-resistant plate 3 is usually set to 120°-180°, that is, the arc length of the wear-resistant plate 3 is greater than or equal to 1 / 3 of the circumferential length of the culvert body 1 and less than or equal to 1 / 2 of the circumferential length of the culvert body 1.

[0038] On the basis of the above embodiment, considering that the wear-resistant plate 3 is eroded and the wear resistance is reduced after long-term use, the wear-resistant plate 3 can be provided with a release layer relative to the inner surface of the concrete layer 2, which is used to avoid the adhesion between the wear-resistant plate 3 and the concrete layer 2, so as to replace the wear-resistant plate 3 when it is damaged.

[0039] In addition, in order to prolong the service life of the wear-resistant plate 3, the outer surface of the wear-resistant plate 3 far away from the concrete layer 2 can be subjected to shot blasting treatment to enhance the strength of the wear-resistant plate 3, or a wear-resistant coating can be arranged on the outer surface of the wear-resistant plate 3 far away from the concrete layer 2 to enhance the wear resistance of the wear-resistant plate 3.

[0040] On the basis of the above-mentioned embodiments, the structure of the culvert body 1 is limited, and the culvert body 1 can be formed by lapping a plurality of arc-shaped steel corrugated plates 11, and two adjacent steel corrugated plates 11 are connected by first fasteners which are uniformly distributed along the axial direction of the steel corrugated plate 11.

[0041] Please refer to Figure 4 , the left and right sides of the steel corrugated plate 11 in the axial direction are uniformly provided with a plurality of first mounting holes in the axial direction, and in assembly, the outer edges of two adjacent rows of steel corrugated plates 11 are lapped with each other, and the steel corrugated plates 11 on both sides are connected by the first fasteners, so as to surround the culvert body 1 by the steel corrugated plates 11.

[0042] The first fastener can be specifically provided as a high-strength long bolt 4, a pin, etc., and the first fastener can be arranged at the peak of the steel corrugated plate 11, at the valley of the steel corrugated plate 11, or between the peak and the valley of the steel corrugated plate 11, but considering the processing difficulty and assembly accuracy of the first mounting hole, the first fastener is preferably arranged at the peak of the steel corrugated plate 11.

[0043] The material, structure, type and spacing of the first fastener are determined according to the actual production connection strength requirement, which will not be repeated here.

[0044] In order to avoid the continuous lap joint seam of the culvert body 1 in the circumferential direction, resulting in obvious stress weak area of the culvert body 1 in the axial direction, preferably, the two adjacent rows of steel corrugated plates 11 are arranged in a staggered manner, so that the axial connection of the same row of steel corrugated plates 11 is opposite to the middle part of the other row of steel corrugated plates 11, as shown in Figure 4 .

[0045] In this embodiment, the culvert body 1 is composed by lapping, and compared with the splicing mode, the length of the lap joint seam is longer, and the waterproof sealing performance is better.

[0046] Preferably, in order to further enhance the sealing performance of the culvert body 1 at the lap joint seam, a sealing gasket 12 such as a rubber gasket is arranged between the two adjacent steel corrugated plates 11 lapped with each other, and the sealing gasket 12 is used to enhance the sealing performance of the lap joint seam of the culvert body 1.

[0047] On the basis of the above-mentioned embodiments, in order to facilitate the connection of the wear-resistant plate 3 and the steel corrugated plate 11, the second fastener can be arranged at the crest of the steel corrugated plate 11, which can not only reduce the connection distance of the wear-resistant plate 3 to the steel corrugated plate 11 to reduce the length of the second fastener, but also make the installation position of the second fastener higher from the mounting surface of the culvert body 1, facilitating assembly.

[0048] The second fastener can be uniformly arranged at every 1 crest of the steel corrugated plate 11 as shown, or at every 2 or more crests, or without interval. Figure 2

[0049] The number of crests of the steel corrugated plate 11 arranged between the adjacent two second fasteners is determined according to the wavelength of the steel corrugated plate 11 in actual production and the connection strength requirement of the steel corrugated plate 11 and the wear-resistant plate 3, which will not be described here.

[0050] In the present embodiment, the second fastener is arranged at the crest of the steel corrugated plate 11, which is beneficial to shorten the length of the second fastener to reduce cost, and facilitates the installation of the second fastener, facilitating assembly.

[0051] The first fastener is used to connect the steel corrugated plate 11 to form the culvert body 1, and the second fastener is used to connect the steel corrugated plate 11 and the wear-resistant plate 3, and the types of the two can be the same or different.

[0052] In order to reduce the types of fasteners, the first fastener and the second fastener are usually provided with high-strength long bolts 4 and fastening nuts 5, and in order to reduce the number of fasteners, the first fastener can be used to connect the steel corrugated plate 11 and the wear-resistant plate 3 at the same time.

[0053] For example, referring to Figure 2 and Figure 5 , one end of the high-strength long bolt 4 is provided with a fastening nut 5, the high-strength long bolt 4 passes through the gasket 6, the steel corrugated plate 11, the sealing gasket 12, the steel corrugated plate 11 and the wear-resistant plate 3 from outside to inside in sequence, the other end of the high-strength long bolt 4 is provided with a fastening nut 5, and the fastening nuts 5 on both sides are respectively in abutment with the steel corrugated plate 11 and the wear-resistant plate 3.

[0054] It should be noted that the first fastener and the second fastener mentioned in the present application, the first and the second in the first mounting hole and the second mounting hole, are only used to distinguish the difference in position, and do not limit the order.

[0055] In the present specification, each embodiment is described in a progressive manner, and each embodiment focuses on the difference from other embodiments, and the same or similar parts between each embodiment can be referred to each other.

[0056] ​The steel corrugated pipe culvert anti-abrasion protection structure provided by the utility model is described in detail. The principle and implementation mode of the utility model are described by applying specific examples. The description of the above examples is only used for helping to understand the method and core idea of the utility model. It should be pointed out that, for ordinary skilled persons in the technical field, some improvements and modifications can be made to the utility model without departing from the principle of the utility model, and these improvements and modifications also fall within the protection scope of the utility model claim.

Claims

1. A steel corrugated pipe culvert anti-erosion protection structure, characterized in that, The utility model provides a kind of culvert, including culvert body (1), the bottom of the culvert body (1) is equipped with wear plate (3), the wear plate (3) is fixed to the culvert body (1) by second fastener axially, and wear plate (3) and the inner surface of the culvert body (1) are equipped with concrete layer (2), the concrete layer (2) is equipped with steel mesh (21), to enhance the wear resistance of the concrete layer (2).

2. The steel corrugated pipe culvert abrasion protection structure according to claim 1, wherein, The second fastener is uniformly distributed along the circumferential direction of the culvert body (1), and the second fastener is uniformly distributed along the axial direction of the culvert body (1).

3. The steel corrugated pipe culvert abrasion protection structure of claim 1, wherein, The center of the wear plate (3) is the same as the center of the culvert body (1), and the corresponding central angle of the wear plate (3) is 120°-180°.

4. The steel corrugated pipe culvert abrasion protection structure according to any one of claims 1-3, characterized in that, The wear plate (3) is provided with a release layer relative to the inner surface of the concrete layer (2), which is used to avoid the wear plate (3) and the concrete layer (2) from sticking together, so as to replace the wear plate (3) when it is damaged.

5. The steel corrugated pipe culvert abrasion protection structure according to any one of claims 1-3, characterized in that, The culvert body (1) is formed by lapping a plurality of arc-shaped steel corrugated plates (11), and two adjacent steel corrugated plates (11) are connected by a first fastener, which is uniformly distributed along the axial direction of the steel corrugated plate (11).

6. The steel corrugated pipe culvert abrasion protection structure according to claim 5, wherein, Two adjacent rows of steel corrugated plates (11) are arranged alternately, so that the axial connection of the steel corrugated plates (11) in the same row is opposite to the middle part of the steel corrugated plates (11) in the other row.

7. The steel corrugated pipe culvert abrasion protection structure of claim 5, wherein, A sealing gasket (12) is arranged between two adjacent steel corrugated plates (11) lapped with each other, which is used to enhance the sealing performance of the lap joint of the culvert body (1).

8. The steel corrugated pipe culvert abrasion protection structure of claim 5, wherein, The second fastener is arranged at the peak of the steel corrugated plate (11), so as to reduce the connection distance of the wear plate (3) to the steel corrugated plate (11).

9. The steel corrugated pipe culvert abrasion protection structure of claim 8, wherein, The steel corrugated plate (11) is provided with a second mounting hole for mounting the second fastener, and the steel corrugated plate (11) is provided with a sealing gasket outside the second mounting hole, and the second fastener is connected with the wear plate (3) after sequentially penetrating through the sealing gasket and the steel corrugated plate (11).

10. The steel corrugated pipe culvert abrasion protection structure of claim 9, wherein, The first fastener and the second fastener each include a high-strength long bolt (4) and a fastening nut (5).

Images