Assembled steel culvert gate

Abstract

This utility model relates to the field of building construction, and more particularly to an assembled steel culvert gate. The assembled steel culvert gate includes a steel pipe with multiple reinforcing rings installed on its outer side. Multiple reinforcing haunches are connected to both ends of the outer side of the steel pipe, and panels are installed at both ends of the outer side of the steel pipe. A gate is installed on one of the panels, located at one end of the steel pipe. Main crossbeams are installed at the top and bottom of the two panels on opposite sides. The assembled steel culvert gate provided by this utility model uses a steel pipe as the main load-bearing structure, combined with a support system composed of reinforcing rings, reinforcing haunches, and longitudinal and transverse steel channels. This effectively resists soil pressure, water flow impact, and ground loads, exhibiting high structural strength and good stability. Even under conditions of uneven foundation settlement, the good toughness of the steel structure can prevent serious damage such as cracking and fracture, ensuring the long-term stable operation of the culvert gate.

Description

Technical Field

[0001] This utility model relates to the field of building construction, and in particular to an assembled steel culvert gate. Background Technology

[0002] In the field of construction, culverts and sluices play a crucial role as key facilities for controlling water flow. Traditionally, culverts and sluices are constructed using cast-in-place concrete structures; however, this method has several drawbacks. Firstly, the construction process is complex, requiring formwork erection, rebar tying, concrete pouring, and lengthy curing, resulting in a prolonged construction period and significantly impacting project progress. Furthermore, construction is heavily influenced by weather conditions; rain hinders concrete pouring, and low temperatures delay concrete setting and hardening, further delaying the project. Secondly, on-site pouring requires a large site, necessitating extensive material storage and operational space. In areas with limited space or complex surrounding environments, the construction difficulty increases dramatically.

[0003] Therefore, it is necessary to provide a new assembled steel culvert gate to solve the above-mentioned technical problems. Utility Model Content

[0004] To overcome the shortcomings of existing technologies, an assembled steel culvert gate is provided to solve the above-mentioned problems.

[0005] The assembled steel culvert gate provided by this utility model includes: a steel pipe, with multiple reinforcing rings installed on the outer side of the steel pipe, multiple reinforcing haunches connected to both ends of the outer side of the steel pipe, and a panel installed on both ends of the outer side of the steel pipe. A gate is installed on one of the panels and the gate is located at one end of the steel pipe. Main crossbeam channel steel is installed on the top and bottom of the two panels on the side opposite to the main crossbeam channel steel. Multiple longitudinal beam steel channels and multiple secondary crossbeam steel channels are respectively installed on the side of the two panels closest to the main crossbeam channel steel.

[0006] Preferably, the inner wall of the steel pipe is coated with epoxy asphalt anti-rust primer, and the inner coating of the epoxy asphalt anti-rust primer is coated with epoxy asphalt topcoat.

[0007] Preferably, the outer wall of the steel pipe is coated with epoxy coal tar pitch coating and the outer side is wrapped with fiberglass cloth.

[0008] Preferably, the plurality of reinforcing rings are equidistantly distributed along the rotation axis of the outer wall of the steel pipe.

[0009] Preferably, the axes of the plurality of the reinforcing haunch steel pipes are equidistantly distributed.

[0010] Preferably, the plurality of longitudinal beam steel channels are equidistantly distributed along the width of the panel.

[0011] Preferably, the multiple secondary crossbeam steel channels are equidistantly distributed along the length of the panel.

[0012] Compared with related technologies, the assembled steel culvert gate provided by this utility model has the following beneficial effects:

[0013] This utility model uses steel pipes as the main load-bearing structure, combined with a support system consisting of reinforcing rings, strengthening haunches, and longitudinal and transverse steel channels. This effectively resists soil pressure, water flow impact, and ground loads, resulting in high structural strength and good stability. Even in the event of uneven settlement of the foundation, the excellent toughness of the steel structure can prevent serious damage such as cracking and breakage, ensuring the long-term stable operation of the culvert.

[0014] This invention forms a multi-layered protective barrier by coating the inner and outer walls of the steel pipe with epoxy asphalt anti-rust primer, epoxy asphalt topcoat, and epoxy coal tar coating, and then wrapping it with fiberglass cloth. This effectively resists the corrosion of steel by water, oxygen, acid and alkali substances, and microorganisms, significantly extending the service life of the culvert and reducing subsequent maintenance costs.

[0015] Compared with traditional concrete culverts, the assembled steel culvert is lighter, making it easier to transport and install in narrow spaces or areas with poor transportation. At the same time, its structural design can be flexibly adjusted according to different engineering needs, such as by increasing or decreasing the number of reinforcing rings or adjusting the layout of crossbeams, to adapt to different geological conditions and water flow conditions. Attached Figure Description

[0016] Figure 1 A schematic diagram of a preferred embodiment of the assembled steel culvert gate provided by this utility model;

[0017] Figure 2 for Figure 1 The diagram shows the structural schematic of the longitudinal beam steel channel;

[0018] Figure 3 for Figure 1 The diagram shown is a top view of the structure.

[0019] The following are the labels in the diagram: 1. Steel pipe; 2. Reinforcing ring; 3. Reinforcing haunch; 4. Panel; 5. Gate; 6. Main crossbeam channel steel; 7. Longitudinal beam steel channel; 8. Secondary crossbeam steel channel. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0021] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0022] This utility model provides an assembled steel culvert gate, which includes: a steel pipe 1, with multiple reinforcing rings 2 installed on the outer side of the steel pipe 1, multiple reinforcing axles 3 connected to both ends of the outer side of the steel pipe 1, and a panel 4 installed on both ends of the outer side of the steel pipe 1. A gate 5 is installed on one of the panels 4, and the gate 5 is located at one end of the steel pipe 1. Main crossbeam channel steel 6 is installed on the top and bottom of the two panels 4 on the side away from each other. Multiple longitudinal beam steel channels 7 and multiple secondary crossbeam steel channels 8 are respectively installed on the side of the two panels 4 near the main crossbeam channel steel 6. The multiple reinforcing rings 2 are equidistantly distributed along the direction of the rotation axis of the outer wall of the steel pipe 1, the multiple reinforcing axles 3 are equidistantly distributed along the axis of the steel pipe 1, the multiple longitudinal beam steel channels 7 are equidistantly distributed along the width of the panel 4, and the multiple secondary crossbeam steel channels 8 are equidistantly distributed along the length of the panel 4.

[0023] It should be noted that: Steel pipe 1, as the core load-bearing framework of the culvert, forms a tubular channel for water flow, bearing the pressure of the soil above, the impact force of the water flow, and the ground load. Steel pipe 1 is a spiral welded steel pipe; the high strength and toughness of the steel material can resist uneven settlement of the foundation, avoiding the cracking risk of traditional concrete structures. Reinforcing rings 2 are equidistantly distributed along the axial direction of the outer wall of steel pipe 1, forming a circumferential constraint structure. This suppresses the radial deformation of steel pipe 1 under external loads (such as backfill pressure), preventing local wall indentation or instability. Reinforcing haunches 3 are located on the outer sides of both ends of steel pipe 1, equidistantly distributed along the axis of the steel pipe, forming a triangular connection between steel pipe 1 and panel 4. This alleviates stress concentration at the connection between the ends of steel pipe 1 and panel 4, enhances the shear and bending resistance of the end nodes, and prevents weld cracking due to stress concentration. Panel 4 is installed at both ends of steel pipe 1, serving as the end walls of the culvert, sealing the ends of steel pipe 1 to prevent soil ingress, and providing an installation surface for components such as the gate 5 and crossbeams. Gate 5 is installed on one of the panels 4, located at one end of the steel pipe 1, controlling the flow of water and regulating the flow rate. Gate 5 is an existing, mature structure and will not be described further here. Main crossbeam channel steel 6 is installed at the top and bottom of the two panels 4 on opposite sides, forming a "gate frame" support system. It bears horizontal loads such as soil lateral pressure and gate opening / closing force transmitted from the panels 4. The channel steel is welded to the panels 4 through its flanges, and the web provides shear stiffness, improving overall bending resistance. Longitudinal beam steel channels 7 are located on the side of the panel 4 closest to the main crossbeam channel steel 6, evenly distributed along the width of the panel 4, and intersecting perpendicularly with the main crossbeam channel steel 6. This divides the panel 4 into multiple small-span areas, reducing local deformation and effectively transforming the panel into a "one-way slab" load-bearing mode, reducing the required panel thickness. It forms a grid-like support with the main crossbeam channel steel 6, improving the overall stiffness of the panel 4, especially suitable for uneven load distribution conditions. The secondary crossbeam steel channel 8 is installed on the side of the panel 4 near the main crossbeam channel 6, and is equidistantly distributed along the length of the panel 4, located between the main crossbeam channel 6. It further refines the support grid of the panel 4, providing additional support for areas with concentrated loads, such as around the gate 5, to prevent bulging or cracking of the panel due to excessive local stress. Together with the longitudinal beam steel channel 7, it forms a "well"-shaped support system, working in conjunction with the main crossbeam channel 6 to achieve multi-level load distribution and optimize the structural stress performance. Adopting a modular design, all components, such as steel pipes, reinforcing rings, and panels, can be prefabricated in the factory and quickly assembled on-site through welding and bolting, significantly shortening the construction cycle, reducing on-site construction time and manpower input, and mitigating the constraints of weather and site conditions on construction.

[0024] In an embodiment of this utility model, the inner wall of the steel pipe 1 is coated with epoxy asphalt anti-rust primer, and the inner coating of the epoxy asphalt anti-rust primer is coated with epoxy asphalt topcoat.

[0025] It should be noted that: the epoxy asphalt anti-rust primer is applied to the inner wall of steel pipe 1. The epoxy asphalt primer contains anti-rust pigments (such as zinc powder and zinc phosphate), which, through electrochemical action, sacrificial anode protection of the steel pipe substrate prevents oxidation reactions between the iron matrix and water or oxygen. The epoxy resin component has extremely strong adhesion to the steel surface, penetrating the micropores of the steel pipe to form a tight bond, preventing coating peeling. The epoxy asphalt topcoat is applied inside the epoxy asphalt anti-rust primer. The topcoat continues the chemical corrosion resistance of epoxy asphalt, resisting the erosion of the inner wall of the steel pipe by acidic and alkaline substances in the water flow, extending the service life of the culvert. The high viscosity of asphalt allows the topcoat to form a flexible and wear-resistant layer, reducing direct scouring and wear on the inner wall of the steel pipe when water carrying silt, gravel, and other particles passes through the culvert.

[0026] In an embodiment of this utility model, the outer wall of the steel pipe 1 is coated with epoxy coal tar pitch coating, and the outer side is wrapped with glass fiber cloth.

[0027] It should be noted that: the epoxy coal tar coating is applied to the outer wall of steel pipe 1. The epoxy resin provides high-strength adhesion, tightly bonding with the steel surface to form a chemical anti-corrosion barrier, resisting the penetration of moisture, oxygen, and electrolytes from the soil. Coal tar is rich in asphaltenes and resins, exhibiting excellent water resistance, resistance to microbial corrosion, and resistance to plant root penetration, making it suitable for buried environments where it is in long-term contact with moist soil and groundwater. Fiberglass cloth, with its high strength and high abrasion resistance, is wrapped around the outer side of the epoxy coal tar coating, forming a "coating + fiber" composite structure. This prevents the coating from being damaged by external forces such as backfill compaction and stone friction. The fiber layer disperses mechanical stress, preventing the coating from cracking due to soil settlement or external impact, making it particularly suitable for complex geological conditions such as gravelly soil and miscellaneous fill.

[0028] The working principle of the assembled steel culvert gate provided by this utility model is as follows: When water flows through the culvert gate, the water first impacts the gate 5. At this time, if the gate 5 is in the open state, the water can smoothly pass through the channel formed by the steel pipe 1. The steel pipe 1, as the main water passage of the culvert gate, bears the impact force of the water flow and transmits it to the surrounding reinforcing rings 2, reinforcing haunches 3, and the crossbeam structure connected to the panel 4. The reinforcing rings 2, through circumferential constraints, suppress the radial deformation of the steel pipe 1 under the action of water flow impact and external soil pressure, maintaining the structural stability of the steel pipe 1. The reinforcing haunches 3 evenly transmit the stress at the end of the steel pipe 1 to the panel 4, avoiding stress concentration that could lead to weld cracking. The panel 4 bears the lateral pressure from the soil and transmits it to the main crossbeam channel steel 6. The main crossbeam channel steel 6, together with the longitudinal beam channel steel 7 and the secondary crossbeam channel steel 8, form a grid-like support system, which distributes the load borne by the panel 4 step by step, reduces the local deformation of the panel 4, and ensures the strength and stability of the entire culvert gate structure. When regulating the water flow, the cross-sectional area through which the water flows can be controlled by operating the opening degree of the gate 5, thus achieving precise control of the water flow. The anti-corrosion coating on the inner and outer walls of the culvert steel pipe 1 continues to function, preventing corrosive substances in the water and soil from contacting the steel, ensuring the durability of the culvert structure during long-term use.

[0029] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An assembled steel culvert gate, characterized by, include: A steel pipe (1) is provided with multiple reinforcing rings (2) installed on the outside of the steel pipe (1). Multiple reinforcing haunches (3) are connected to both ends of the outside of the steel pipe (1). Panels (4) are installed on both ends of the outside of the steel pipe (1). A gate (5) is installed on one of the panels (4) and the gate (5) is located at one end of the steel pipe (1). Main crossbeam channel steel (6) is installed on the top and bottom of the two panels (4) on the side away from each other. Multiple longitudinal beam steel channels (7) and multiple secondary crossbeam steel channels (8) are installed on the side of the two panels (4) that are close to the main crossbeam channel steel (6).

2. The assembled steel culvert of claim 1, wherein, The inner wall of the steel pipe (1) is coated with epoxy asphalt anti-rust primer, and the inner coating of the epoxy asphalt anti-rust primer is coated with epoxy asphalt topcoat.

3. The assembled steel culvert of claim 2, wherein, The outer wall of the steel pipe (1) is coated with epoxy coal tar pitch coating and wrapped with glass fiber cloth on the outside.

4. The assembled steel culvert of claim 3, wherein, The multiple reinforcing rings (2) are equidistantly distributed along the direction of the rotation axis of the outer wall of the steel pipe (1).

5. The assembled steel culvert of claim 4, wherein, The multiple reinforcing armpits (3) are equidistantly distributed along the axis of the steel pipe (1).

6. The assembled steel culvert of claim 5, wherein, The longitudinal beam steel channels (7) are equidistantly distributed along the width of the panel (4).

7. The assembled steel culvert of claim 6, wherein, The multiple secondary crossbeam steel channels (8) are equidistantly distributed along the length of the panel (4).

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