Steel corrugated tunnel anti-sliding and supporting device

Abstract

The utility model discloses a steel corrugated tunnel anti-sliding and supporting device, and belongs to the technical field of steel corrugated tunnel anti-sliding. Comprising annular I-shaped steel, webs on the annular I-shaped steel are connected in a welded mode through cross beams, a formed whole forms physical blocking during soil backfilling, the annular I-shaped steel is arranged outside, anti-sliding force can be provided, and the annular I-shaped steel is embedded into backfilling soil above a steel corrugated pipe tunnel through the geometrical shape of the annular I-shaped steel to prevent relative sliding; the supporting plate is arranged in the corrugated pipe, and supporting performance can be improved; and through the modular design and the prefabricated assemblies, the construction period is greatly shortened. Prefabricated production of the annular I-shaped steel and the cross beam reduces the complexity of site construction, the installation process is simple, convenient and rapid, and the construction efficiency can be remarkably improved. The connecting mode of the inhaul cables and the anchor rods is simple and easy to implement, the sliding force of the steel corrugated tunnel under the large-gradient foundation condition can be effectively resisted, and the anti-sliding capacity of the tunnel is remarkably enhanced.

Description

Technical Field

[0001] This utility model belongs to the field of anti-slip technology for corrugated steel tunnels, and specifically relates to an anti-slip and support device for corrugated steel tunnels. Background Technology

[0002] In transportation infrastructure construction, road culvert engineering plays a crucial role. Currently, arch culverts primarily use reinforced concrete as the building material, and their construction technology is relatively mature. However, reinforced concrete culverts have a long construction cycle and are prone to cracking during use. Furthermore, due to their significant self-weight, they may also experience foundation settlement. Given the numerous challenges in reinforcing and maintaining reinforced concrete culverts, their economic viability and applicability are limited. In contrast, corrugated steel culverts, constructed by connecting or assembling corrugated pipes or curved plates, offer a more flexible and efficient solution. Using corrugated steel structures allows for construction under varying climatic conditions, effectively reducing the adverse effects of rain, snow, and other severe weather on project quality and construction progress. Moreover, the construction of corrugated steel structures exhibits significant flexibility, enabling more agile design and layout based on site topography and actual project requirements. Corrugated steel structures also possess excellent tensile, shear, and fatigue resistance properties, further ensuring the stability and durability of the project. However, in tunnels located on steep terrain, heavy transport vehicles exert tremendous horizontal thrust on the tunnel during acceleration and braking. In such situations, corrugated steel pipe tunnels prove inadequate in resisting slippage, a problem frequently encountered in engineering practice. Therefore, it is essential to improve the slip resistance of corrugated steel pipe tunnels to ensure they can cope with the challenges of complex terrain, thereby enhancing their safety and reliability. Summary of the Invention

[0003] To address the above shortcomings, the purpose of this utility model is to provide a corrugated steel tunnel anti-slip and support device to solve the problems of long construction period and poor anti-slip ability.

[0004] The technical solution adopted by the utility model is as follows: the anti-slip device for corrugated steel tunnels includes a circumferential I-beam. The webs of the circumferential I-beam are welded together by crossbeams. The upper flange of the circumferential I-beam has multiple through holes for connecting cables. The lower flange of the circumferential I-beam has through holes for connecting to the crests of the corrugated steel pipe wall. Each through hole fixes the circumferential I-beam to the corrugated steel pipe body by inserted connecting bolts. The circumferential I-beam and the crossbeams connecting the webs of the circumferential I-beam are either integrally or entirely disposed outside the corrugated steel pipe body to form a physical barrier to prevent relative sliding of the corrugated steel pipe body during backfilling; or they are all disposed inside the corrugated steel pipe body to form physical support during backfilling.

[0005] Preferably, the curvature of the circumferential I-beam is consistent with the curvature of the corrugated steel pipe crest.

[0006] Preferably, waterproof gaskets are installed at the connection points between the connecting bolts and the inner and outer walls of the corrugated steel pipe.

[0007] Preferably, the circumferential I-beams are connected to the middle of each corrugated steel sheet and arranged sequentially along the longitudinal direction of the tunnel.

[0008] Preferably, the bottom of the cable is provided with a connector device, which is connected to the anchor rod anchored in the foundation.

[0009] Preferably, the crest of the corrugated tunnel slab at the connection between the corrugated steel pipe body and the I-beam is a straight section.

[0010] Preferably, the surface of the circumferential I-beam is provided with an environmentally friendly protective coating.

[0011] The beneficial effects of this utility model are as follows: This anti-slip and support device for corrugated steel tunnels includes circumferential H-beams. The webs of the circumferential H-beams are welded together via crossbeams. When the integral structure is set on the outer wall of the corrugated steel pipe, it forms a physical barrier to prevent relative sliding of the corrugated steel pipe body during backfilling. When the integral structure is set on the inner wall of the corrugated steel pipe, it can improve the support for the corrugated steel pipe body. This utility model significantly shortens the construction cycle through modular design and prefabricated components. The prefabrication of the circumferential H-beams and crossbeams reduces the complexity of on-site construction, and the installation process is simple and quick, significantly improving construction efficiency. The connection method of the cables and anchors is simple and easy to implement, reducing the technical difficulty in construction, and is particularly suitable for construction under conditions of steep slopes or complex terrain. The horizontal tension provided by the cables and anchors can effectively resist the sliding force of the corrugated steel tunnel under steep foundation conditions, significantly enhancing the tunnel's anti-slip capability.

[0012] In areas prone to strong earthquakes or with steep slopes where uneven ground conditions are likely to occur, the circumferential I-beams placed on the outside of the corrugated pipe tunnel can provide anti-sliding force compared to those placed inside the tunnel. The circumferential I-beams embed themselves into the backfill soil above the corrugated pipe tunnel through their own geometric shape, forming a physical barrier to prevent relative sliding.

[0013] In the lateral direction, the support system effectively resists earth pressure and external forces, preventing lateral deformation of the tunnel. In the longitudinal direction, the support system shares the axial load, preventing longitudinal deformation caused by uneven settlement or external loads. While the backfill on both sides and above the tunnel is incomplete, the circumferential H-beams, with their high rigidity and stability, effectively overcome the tunnel's weaknesses in resisting overturning and deformation, ensuring the safety of construction and the integrity of the structure. The design of cables and anchors not only enhances anti-slip capability but also provides additional support during construction, reducing construction risks.

[0014] By adopting the above technical solutions, the anti-slip capability, structural strength, and construction efficiency of corrugated steel tunnels are significantly improved. Its modular design and the application of cable-stayed anchor system technology not only enhance construction safety and economy but also improve the tunnel's applicability under complex terrain and heavy-load conditions. This invention has broad application prospects and can provide safer, more economical, and sustainable solutions for culvert projects in highways, municipal works, and coal transportation. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the planar arrangement of the I-beams and crossbeams in Example 1 of this utility model;

[0017] Figure 2 This is a schematic diagram of the cable arrangement in Example 1 of this utility model;

[0018] Figure 3 This is a schematic diagram of the planar arrangement of the I-beams and crossbeams in Embodiment 2 of this utility model;

[0019] Figure 4 This is a schematic diagram of a partial arrangement of the circumferential I-beams and crossbeams in Embodiment 2 of this utility model.

[0020] Figure 5 This is a schematic diagram of the overall arrangement of the circumferential I-beam and crossbeam in Embodiment 2 of this utility model.

[0021] Attached diagram annotations: 1-Corrugated steel tunnel slab; 2-Circular I-beam; 3-Crossbeam; 4-Cable; 5-Connector device; 6-Water-based epoxy resin coating. Detailed Implementation

[0022] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the following description is provided in conjunction with the appendix. Figures 1-5 The present invention will be further described in detail below with reference to specific embodiments. Example 1:

[0023] This example provides a corrugated steel tunnel anti-slip and support device, including corrugated steel tunnel panels 1, circumferential H-beams 2, crossbeams 3, cables 4, connector devices 5, and a water-based epoxy resin coating 6. Multiple corrugated steel tunnel panels 1 are assembled to form a corrugated steel pipe body.

[0024] In this embodiment, the webs of the circumferential H-beam 2 are welded together by crossbeams, forming an integral structure located outside the corrugated steel pipe body. This integral structure acts as a physical barrier to prevent relative sliding of the corrugated steel pipe body during backfilling. The upper flange of the circumferential H-beam 2 has multiple through holes for connecting cables, and the lower flange of the circumferential H-beam 2 has through holes for connecting to the crests of the corrugated steel pipe wall. Each through hole secures the circumferential H-beam 2 to the corrugated steel pipe body using inserted connecting bolts. The crests of the corrugated tunnel slab at the connection between the corrugated steel pipe body and the H-beam are straight sections.

[0025] First, as attached Figure 1 As shown, the circumferential H-beams 2 and crossbeams 3 are prefabricated in the factory. The crossbeams 3 are made of angle steel. The webs on the circumferential H-beams 2 are evenly spaced, and the webs are welded together via the crossbeams 3. The inner arc of the circumferential H-beams 2 matches the outer arc of the corrugated steel pipe crest, ensuring a tight fit against the outer wall of the corrugated steel pipe. Multiple through holes are provided on the lower flange of the circumferential H-beams 2 for connection to the corrugated steel tunnel panels 1. The crossbeams 3 are evenly spaced between the circumferential H-beams 2, forming a modular support structure. The combined structural design of the circumferential H-beams 2 and the corrugated steel pipe body allows the support system and the tunnel to share the load, further enhancing the overall stability of the tunnel and ensuring its safety under heavy-load transportation and steep slope conditions. The rational arrangement of the circumferential H-beams 2 and crossbeams 3 optimizes the overall stress distribution of the tunnel, enhances the structural rigidity and stability, and effectively resists deformation problems that may occur during construction and use. The materials used in this embodiment are easy to procure, and the reliance on scaffolding is reduced, thus lowering construction costs. Modular design and factory prefabrication further save construction time and labor costs.

[0026] As attached Figure 2As shown, cable 4 is connected to the I-beam 2 through a through-hole in the upper flange of the circumferential I-beam 2. The other end of cable 4 is connected to an anchor bolt fixed in the foundation via a connecting device 5, ensuring that cable 4 can provide sufficient horizontal tension to resist the sliding force of the tunnel. By improving the durability and fatigue resistance of the corrugated steel tunnel, maintenance requirements due to deformation or damage are reduced, further lowering long-term operating costs. By enhancing the structure's anti-slip capability and overall stability, the service life of the corrugated steel tunnel is significantly extended, ensuring its efficient and reliable operation during long-term service.

[0027] The prefabricated modular components of the circumferential H-beams 2 and crossbeams 3 are transported to the construction site. According to the design drawings, the circumferential H-beams 2 are arranged at equal intervals on the outside of the corrugated steel pipe body, ensuring a tight fit with the outer wall of the corrugated steel pipe. The circumferential H-beams 2 are fixed to the corrugated steel pipe body using connecting bolts, ensuring that the supporting structure and the tunnel form an integrated load-bearing system. Waterproof gaskets are installed on the inner and outer walls of the tunnel using the connecting bolts to ensure the structure's sealing and durability. The surfaces of the circumferential H-beams 2 and crossbeams 3 are treated with an environmentally friendly protective coating (such as water-based epoxy resin coating 6). Example 2:

[0028] The anti-slip device for the corrugated steel tunnel in this embodiment is not limited to the working conditions of Embodiment 1. In sections with gentle foundations, the circumferential I-beams and crossbeams are built into the internal support structure of the corrugated steel tunnel. The following is a detailed description... Figures 3-5 The specific implementation method will be further described in detail for the internal support working condition of Example 2.

[0029] The support structure in this embodiment includes a circumferential H-beam 2. The webs of the circumferential H-beam 2 are welded together via crossbeams, forming a whole located on the inner surface of the corrugated steel pipe body, used to internally support the entire corrugated steel pipe body. The upper flange of the circumferential H-beam has multiple through holes for connecting cables, and the lower flange of the circumferential H-beam has through holes for connecting to the crests of the corrugated steel pipe wall. Each through hole secures the circumferential H-beam to the corrugated steel pipe body using inserted connecting bolts. The corrugated duct slab at the connection between the corrugated steel pipe body and the H-beam has a straight crest.

[0030] As attached Figure 3 -Appendix Figure 5 As shown, the circumferential H-beam 8 and the crossbeam 9 are prefabricated in the factory. The crossbeam 9 is made of angle steel and is welded to the circumferential H-beam 8. The outer radius of the circumferential H-beam 8 matches the radius of the inner wall of the corrugated steel pipe, ensuring that it fits tightly against the inner wall of the corrugated steel pipe.

[0031] The upper flange of the circumferential I-beam 8 is welded to the wall of the corrugated steel pipe to ensure the overall stability of the structure. Crossbeams 9 are evenly spaced between the circumferential I-beams 8, forming a modular support structure.

[0032] Sensor 10 is embedded at the shoulder of the corrugated steel pipe body to monitor the stress, deformation and other data of the culvert in real time. Sensor 10 is connected to a cloud platform through Internet of Things (IoT) technology, enabling remote monitoring and data analysis.

[0033] The surfaces of the circumferential I-beams 8 and crossbeams 9 are treated with an environmentally friendly protective coating (such as water-based epoxy resin) 11. This coating has excellent corrosion resistance and meets environmental protection requirements. The coating application should be completed in the factory to ensure the uniformity and adhesion of the coating and to avoid damage to the coating during transportation and installation.

[0034] The prefabricated modular components of the circumferential I-beams 8 and crossbeams 9 were transported to the construction site. According to the design drawings, the circumferential I-beams 8 were arranged at equal intervals inside the corrugated steel pipe, ensuring a tight fit between them and the inner wall of the corrugated steel pipe.

[0035] After installation, sensor 10 should be debugged to ensure it can collect data normally and transmit it to the cloud platform via IoT technology. During debugging, the sensor's sensitivity and data transmission stability should be tested to ensure the reliability of the monitoring system. During backfilling on both sides and above the culvert, the sensor data changes should be monitored in real time to ensure the culvert does not deform excessively or become unstable during the backfilling process. If abnormal monitoring data is detected, the construction plan should be adjusted promptly, and reinforcement measures should be taken to ensure construction safety.

[0036] After the culvert is put into use, its stress, deformation, and other data continue to be monitored in real time using sensor 10 to ensure the stability of the culvert during long-term service. The monitoring data is analyzed through a cloud platform to promptly identify potential problems and take preventative maintenance measures.

[0037] Regularly inspect the coatings of the circumferential I-beams 8 and 9 to ensure good corrosion resistance. Repair any damaged coatings promptly. Regularly calibrate and maintain the sensors 10 to ensure the accuracy of their monitoring data.

[0038] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A corrugated steel tunnel anti-slip and support device, characterized in that, The system includes a circumferential H-beam, wherein the webs of the circumferential H-beam are welded together by crossbeams. The upper flange of the circumferential H-beam has multiple through holes for connecting cables, and the lower flange of the circumferential H-beam has through holes for connecting to the crests of the corrugated steel pipe wall. Each through hole secures the circumferential H-beam to the corrugated steel pipe body using inserted connecting bolts. The circumferential H-beam and the crossbeams connecting the webs of the circumferential H-beam, either as a whole or entirely located outside the corrugated steel pipe body, serve to form a physical barrier preventing relative sliding of the corrugated steel pipe body during backfilling; or they are all located inside the corrugated steel pipe body, serve to form physical support during backfilling.

2. The anti-slip and support device for corrugated steel tunnels as described in claim 1, characterized in that, The curvature of the circumferential I-beam is consistent with the curvature of the corrugated steel pipe crest.

3. The anti-slip and support device for corrugated steel tunnels as described in claim 1, characterized in that, Waterproof gaskets are installed at the connection points between the connecting bolts and the inner and outer walls of the corrugated steel pipe.

4. The anti-slip and support device for corrugated steel tunnels as described in claim 1, characterized in that, The circumferential I-beams are connected to the middle of each corrugated steel sheet and are arranged sequentially along the longitudinal direction of the tunnel.

5. The anti-slip and support device for corrugated steel tunnels as described in claim 1, characterized in that, The bottom of the cable is equipped with a connector device, which is connected to the anchor rod anchored in the foundation.

6. The anti-slip and support device for corrugated steel tunnels as described in claim 1, characterized in that, The corrugated tunnel slab at the connection between the corrugated steel pipe body and the I-beam is a straight section.

7. The anti-slip and support device for corrugated steel tunnels as described in claim 1, characterized in that, The surface of the circumferential I-beam is covered with an environmentally friendly protective coating.

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