Environment-adaptive snow-removing and ice-melting concrete guardrail and construction method thereof

Abstract

The application discloses an environment-adaptive snow-removing and ice-melting concrete guardrail and a construction method thereof, and belongs to the technical field of bridge guardrails, and solves the problem that traditional concrete guardrails are prone to causing ice and snow accumulation; specifically, the concrete guardrail is installed on a bridge deck, a steel sliding foot is arranged at the bottom of each concrete guardrail section, a sliding groove is formed at the top of the bridge deck, and the steel sliding foot is slidingly arranged in the sliding groove; two adjacent concrete guardrail sections are connected through a splicing assembly; the bottom of the concrete guardrail is fixed to the bridge deck through an anchor bolt; a snow-removing groove is formed in the middle of the concrete guardrail; a rainwater gutter is arranged at the groove opening of the snow-removing groove; and an electric control profile marker is arranged on the inner side of the concrete guardrail. In the application, the concrete guardrail is manufactured through a prefabrication process, and is then installed on the bridge deck and slid along the sliding groove to a target position, so that the construction time is shortened; the rain and snow can be discharged through the snow-removing groove, so that the accumulated ice and snow do not occupy the shoulder width, and the electric control profile marker on the inner side of the concrete guardrail is prevented from being shielded by the ice and snow.

Description

Technical Field

[0001] This invention relates to the field of bridge railing technology, and in particular to an environmentally adaptive snow and ice melting concrete railing and its construction method. Background Technology

[0002] In recent years, with the continuous expansion of my country's highway network in high-altitude, cold-weather regions and northern cold areas, the threat posed by snow and ice accumulation on roads in winter to traffic safety and efficiency has become increasingly prominent. As an important safety protection facility, roadside guardrails also face severe challenges in their winter service performance. Currently, guardrails used in these areas are mainly divided into two categories: concrete guardrails and metal (mainly steel) guardrails. However, both have significant limitations in dealing with ice and snow problems, making it difficult to simultaneously meet the needs of safety, economy, and functionality.

[0003] Traditional concrete guardrails, while offering advantages such as durability, low maintenance costs, and high impact resistance, are structurally continuous and dense, hindering wind and snow transport and lacking the ability to channel accumulated snow. During snowfall, large amounts of blown snow easily accumulate on the inner side of the bridge surface. This accumulated snow and ice not only encroaches on the effective shoulder width, affecting driving safety, but more importantly, the snow and ice accumulated on the inner side of the guardrail are difficult to melt naturally through sunlight or ambient temperature. Significant manpower and resources are often required for mechanical or manual removal, resulting in high maintenance pressure, low efficiency, and potential damage to the guardrail structure during the removal process. Furthermore, the surface of the delineators on the inner side of the guardrail becomes ineffective due to snow and ice coverage and is extremely difficult to clean, thus affecting nighttime driving safety.

[0004] In addition, metal (steel) guardrails, whether semi-rigid corrugated beam guardrails or flexible cable guardrails, have a large number of gaps due to their beam-column structure, which can effectively prevent ice and snow from adhering and accumulating. However, because they use a large amount of steel, their cost is extremely high, and in extreme weather conditions such as snowy driving, their crash safety is far inferior to that of concrete guardrails. This limits the large-scale promotion and application of steel guardrails in snowy and icy areas.

[0005] Therefore, traditional concrete guardrails cannot solve the problem of snow and ice accumulation, increasing the burden of winter maintenance and safety risks; while steel guardrails are difficult to popularize due to their high cost and relatively poor safety. Therefore, this invention develops a new guardrail structure and its supporting construction method that can inherit the advantages of concrete materials in terms of economy, durability and safety, and also have the ability to adapt to the environment for snow and ice melting, thereby solving the key technical problems that urgently need to be solved in the field of bridge structures in cold regions. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides an environmentally adaptive snow and ice melting concrete guardrail and its construction method, which solves the problem that traditional concrete guardrails are prone to causing snow and ice accumulation.

[0007] Firstly, in order to achieve the above objectives, the technical solution adopted by the present invention is as follows: An environmentally adaptive snow removal and ice melting concrete guardrail includes several sections of concrete guardrail installed on the bridge deck. Each section of concrete guardrail has a steel sliding foot at its bottom, and a groove is opened at the top of the bridge deck, within which the steel sliding foot slides. Adjacent sections of concrete guardrail are connected by splicing components. The bottom of the concrete guardrail is fixed to the bridge deck by anchor bolts. A snow removal groove is opened in the middle of each section of concrete guardrail. A water-blocking component is movably installed inside the snow removal groove. A rain grate is installed at the opening of the snow removal groove. An electrically controlled delineator is installed on the inner side of the concrete guardrail.

[0008] In this scheme, the concrete guardrail is prefabricated and then installed on the bridge deck and slid along the chute to the target position, which shortens the construction time and improves the quality of the project. A snow chute is opened in the middle of the concrete guardrail, through which rain and snow can be discharged, avoiding the accumulation of ice and snow that occupies the width of the road shoulder, and also preventing ice and snow from obscuring the electrical control delineators on the inside of the concrete guardrail.

[0009] Furthermore, the splicing assembly includes angle steel plates, expansion bolts, and pre-embedded connecting steel plates; one side of the angle steel plate is fixed inside the angle steel plate groove on the side of the concrete guardrail, and the other side of the angle steel plate is attached to the side wall of the concrete guardrail; the bottom of the pre-embedded connecting steel plate is provided with a bent part, which is pre-embedded inside the main beam at the bottom of the bridge deck, and the top of the pre-embedded connecting steel plate is connected to the angle steel plate by expansion bolts.

[0010] In this scheme, after each section of concrete guardrail is installed in place during construction, angle steel plates are inserted into the angle steel plate grooves of the concrete guardrail, and then expansion bolts are used to connect and fix the angle steel plates and the pre-embedded connecting steel plates to achieve the connection between the concrete guardrail and the main beam.

[0011] Furthermore, the splicing assembly also includes an H-shaped shear steel plate; a T-shaped shear steel plate pre-reserved groove is opened at one end where two adjacent concrete guardrail sections are spliced, and the two ends of the H-shaped shear steel plate are respectively embedded in the shear steel plate pre-reserved grooves of the two adjacent concrete guardrail sections.

[0012] In this scheme, after inserting the H-shaped shear steel plate, the H-shaped shear steel plate uses the reserved groove of the shear steel plate of the T-shaped structure at the end of the concrete guardrail to connect the two adjacent sections of the concrete guardrail together, so that the concrete guardrail is connected as a whole and the force is continuous.

[0013] Furthermore, a solar panel is installed on the top of the concrete guardrail; a top longitudinal wiring groove is opened on the upper surface of the concrete guardrail, and a vertical semi-circular wiring groove is opened on the inner wall of the pre-reserved groove in the shear steel plate; a reserved horizontal wiring groove is opened inside the concrete guardrail that communicates with the vertical semi-circular wiring groove; wiring harnesses are laid inside the top longitudinal wiring groove, the vertical semi-circular wiring groove and the reserved horizontal wiring groove to connect the solar panel, the electrical control delineator and the electronic monitoring box, and the electronic monitoring box is installed on the concrete guardrail at the far end.

[0014] In this solution, an electronic monitoring box is placed at the end of the concrete guardrail. It contains a built-in battery and climate sensor to power the electromagnet and the resistance wire of the electrically controlled delineator. The climate sensor transmits electrical signals to the electromagnet and resistance wire by sensing changes in humidity and temperature. When the humidity reaches a preset standard for identifying rain or snow, power is supplied to the electromagnet; when the temperature simultaneously drops below 0°C, power is supplied to the resistance wire built into the electrically controlled delineator. A solar panel covers the top of the concrete guardrail, converting solar energy into electricity on sunny days, which is stored in a small battery inside the electronic monitoring box.

[0015] Furthermore, the water-blocking assembly includes a water-blocking plate, which is installed in the snow removal channel, and a mechanical movement cavity is reserved at the top of the water-blocking plate; two sliding steel plates are respectively provided on both sides of the water-blocking plate, and a limiting groove is opened on the contact surface between the sliding steel plate and the water-blocking plate, and the limiting groove is inclined; the two sides of the water-blocking plate are slidably installed in the limiting groove of the sliding steel plate. Two electromagnets are installed on each side of the two sliding steel plates. When the electromagnets are energized, they drive the two sliding steel plates to move towards each other. The movement of the two sliding steel plates towards each other pushes the water baffle plate upward, opening the snow removal chute.

[0016] In this design, when the weather is fine, two sliding steel plates are positioned on either side, with the water-blocking plate obstructing the snow removal channel. On rainy days, an electromagnet drives the two sliding steel plates to move inwards, causing them to push the water-blocking plate upwards, opening the snow removal channel for rain and snow to drain. Limit grooves are provided on the sliding steel plates to control the displacement of the water-blocking plate and prevent it from becoming detached.

[0017] Furthermore, the bottom of the rain grate is hinged to the bottom of the snow removal channel via a hinge, and a stop is fixed to the top of the snow removal channel to block the rain grate; the rain grate is connected to two sliding steel plates via an iron chain, and the iron chain is connected to the hinge anchor holes of the sliding steel plates.

[0018] In this design, the rain grate can rotate relative to the hinge; when the weather is fine, the two sliding steel plates are located on both sides, and the iron chain pulls the rain grate to stand up, with the rain grate blocking the opening of the snow removal channel, thus filtering out debris; when it is cloudy or rainy, the two sliding steel plates move inward, the iron chain loosens, and the rain grate falls down to ensure that rain and snow can be discharged smoothly.

[0019] Furthermore, a PTFE sliding plate is provided at the bottom of the sliding steel plate; A shear-resistant groove is provided in the snow removal channel, located directly below the water baffle, and the bottom of the water baffle is embedded in the shear-resistant groove.

[0020] In this design, a PTFE sliding plate is fitted to the bottom of the sliding steel plate to reduce its sliding resistance; the water-blocking plate is embedded in the anti-shear groove reserved in the bridge deck pavement to ensure the overall stability of the guardrail.

[0021] Furthermore, a semi-circular groove for surface wiring is provided on the inner side of the concrete guardrail, and a top wiring conduit for the snow removal groove is installed on the top of the snow removal groove. A wire harness is run inside the semi-circular groove for surface wiring and the top wiring conduit for snow removal groove, which is used to connect the electronic monitoring box and the electromagnet.

[0022] In this design, the top longitudinal cable tray is located at the top of the pre-reserved slot in the shear steel plate and connects to the electronic monitoring box. Electrical signals are transmitted to the resistance wire inside the electrical control delineator via the connection to the electronic monitoring box, the internal wiring of the longitudinal cable tray, the internal wiring of the vertical semi-circular cable tray, and the internal wiring of the pre-reserved horizontal cable tray. The signals are then transmitted to the electromagnet via the wiring inside the surface semi-circular cable tray and the cable conduit at the top of the snow removal trough. The cable conduit at the top of the snow removal trough and the pre-reserved horizontal cable tray use PVC pipes with pre-drilled holes, while the longitudinal cable tray and the vertical semi-circular cable tray both use semi-circular pipes with pre-drilled cable holes, facilitating future maintenance.

[0023] Furthermore, anchor bolt holes are provided at the bottom of the concrete guardrail and at the top of the bridge deck, and anchor bolts are installed in the anchor bolt holes; anchoring grooves are provided on the sides of the concrete guardrail, and adjusting nuts are threaded onto the anchor bolts, with steel washers placed between the adjusting nuts and the anchoring grooves.

[0024] In this solution, a wrench is inserted into the pre-reserved groove for anchoring, and the adjusting nut is rotated using the wrench. Due to the support of the steel washer, the adjusting nut will not move downwards. At the same time, the adjusting nut drives the anchor bolt to move downwards until the bottom of the anchor bolt extends into the bottom of the anchor bolt hole, thus achieving the connection between the concrete guardrail and the bridge deck, thereby providing a second layer of protection for the installation of the concrete guardrail.

[0025] Secondly, based on the environmentally adaptive snow and ice melting concrete guardrail provided in the first aspect, the present invention provides a construction method for an environmentally adaptive snow and ice melting concrete guardrail, comprising the following steps: S1: Precast main beams and bridge deck; S2: Segmented concrete guardrail; S3: Slide the concrete guardrail to the installation position on the bridge surface; S4: Install anchor bolts and splicing components to connect and fix the concrete guardrail; S5: Install solar panels, electrical control delineators, and electronic monitoring boxes.

[0026] The beneficial effects of this invention are: This invention provides an environmentally adaptive snow and ice melting concrete guardrail and its construction method. (1) The concrete guardrail adopts a prefabrication and installation process, which greatly shortens the construction time and improves the quality of the project compared with the traditional cast-in-place process. (2) The joint between the prefabricated guardrail segments and the joint between the guardrail and the main beam adopt a release process, which saves the time of welding joint construction or concrete wet joint hardening, and the concrete segments can be replaced more economically, quickly and conveniently in the later stage. (3) By improving the structure of the concrete guardrail, the purpose of snow and ice drainage is achieved, replacing the process that steel structure is indispensable in snow and ice areas, and taking into account safety, economy and functional requirements. (4) The snow and ice drainage system and the ice melting system are controlled by sensors to collect and emit signals and electronic control devices to transmit signals. The required electrical energy is obtained through the energy conversion of solar panels, saving labor costs and energy costs. (5) Signal lines should be routed on the surface of the structure as much as possible, with semi-circular tubes pre-reserved slots and mortar covering. When maintaining the wiring harness later, you only need to remove the mortar protection or solar panel and restore it after maintenance, which greatly facilitates the operation and maintenance later. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the longitudinal cross-sectional structure of an environmentally adaptive snow and ice melting concrete guardrail according to the present invention. Figure 2 This is a schematic diagram of the transverse cross-sectional structure of an environmentally adaptive snow and ice melting concrete guardrail according to the present invention. Figure 3 for Figure 2 Enlarged view of a portion of the image; Figure 4 This is a top view schematic diagram of the structure of the rain grate, iron chain, water baffle and sliding steel plate in this invention; Figure 5 This is a structural schematic diagram of the splicing position of two adjacent sections of concrete guardrail in this invention.

[0028] Figure label: 1. Concrete guardrail; 2. H-shaped shear-resistant steel plate; 3. Shear-resistant steel plate reserved groove; 4. Electrical control delineator; 5. Reserved horizontal wiring groove; 6. Surface wiring semi-circular groove; 7. Anchor bolt hole; 8. Anchor bolt; 9. Anchor reserved groove; 10. Adjusting nut; 11. Snow ditch top wiring conduit; 12. Buckle; 13. Rain grate; 14. Hinged buckle; 15. Chain; 16. Water barrier; 17. Sliding steel plate; 18. Angle steel plate groove; 19. Angle steel plate 20. Expansion bolts; 21. Snow ditch top; 22. Embedded connecting steel plate; 23. Steel gasket; 24. Steel sliding foot; 25. Slide groove; 26. Electronic monitoring box; 27. Bridge deck; 28. Main beam; 29. ​​Top longitudinal wiring groove; 30. Vertical semi-circular wiring groove; 31. Electromagnet; 32. Snow ditch; 33. Mechanical moving cavity; 34. Hinge anchor hole; 35. Limiting groove; 36. PTFE sliding plate; 37. Shear-resistant groove; 38. Solar panel; Detailed Implementation The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Specific embodiments of the present invention are described below to facilitate understanding by those skilled in the art. However, it should be understood that the present invention is not limited to the scope of the specific embodiments. For those skilled in the art, various modifications are obvious as long as they fall within the spirit and scope of the present invention as defined and determined by the appended claims. All inventions utilizing the concept of the present invention are protected.

[0029] Example 1 like Figure 1 and Figure 2 As shown, this embodiment provides an environmentally adaptive snow and ice melting concrete guardrail, which solves the problem that traditional concrete guardrails easily lead to snow and ice accumulation. Specifically, it includes: 1 concrete guardrail, 24 steel sliding feet, 8 anchor bolts, splicing components and water-blocking components; The concrete guardrail 1 consists of several sections, which are installed on the bridge deck 27. Each section of the concrete guardrail 1 has a steel sliding foot 24 at its bottom, and a sliding groove 25 is provided at the top of the bridge deck 27. The steel sliding foot 24 slides within the sliding groove 25. The concrete guardrail 1 is prefabricated and then installed on the bridge deck 27, sliding along the sliding groove 25 to the target position, thus shortening the construction time and improving the project quality. A liquid colloid package, such as epoxy resin mixed with a retarder, is placed inside the sliding groove 25. During the sliding and jacking process, the liquid colloid package is broken, and after the guardrail is in place, it gradually solidifies and fills the gaps in the sliding groove 25, improving its stability. Adjacent sections of concrete guardrail 1 are connected by splicing components; the bottom of concrete guardrail 1 is fixed to the bridge deck 27 by anchor bolts 8; a snow removal channel 32 is provided in the middle of each section of concrete guardrail 1; a water-blocking component is movable inside the snow removal channel 32, allowing rain and snow to drain through the snow removal channel 32, preventing the accumulation of ice and snow from occupying the shoulder width, and also preventing ice and snow from obscuring the electrical control delineator 4 on the inner side of the concrete guardrail 1. A rain grate 13 is provided at the opening of the snow removal channel 32; an electrical control delineator 4 is provided on the inner side of the concrete guardrail 1.

[0030] like Figure 3 and Figure 4 As shown, the splicing assembly includes angle steel plate 19, expansion bolts 20, and embedded connecting steel plate 22. One side of angle steel plate 19 is fixed inside the angle steel plate groove 18 on the side of the concrete guardrail 1, and the other side of angle steel plate 19 is attached to the side wall of the concrete guardrail 1. The bottom of the embedded connecting steel plate 22 is provided with a 45° bend, which is embedded inside the main beam 28 at the bottom of the bridge deck 27. The top of the embedded connecting steel plate 22 is connected to the angle steel plate 19 by expansion bolts 20. During construction, after each section of concrete guardrail 1 is installed in place, angle steel plate 19 is inserted into the angle steel plate groove 18 of the concrete guardrail 1, and then the angle steel plate 19 and the embedded connecting steel plate 22 are connected and fixed using expansion bolts 20 to achieve the connection between the concrete guardrail 1 and the main beam 28.

[0031] like Figure 5 As shown, the splicing assembly also includes an H-shaped shear steel plate 2; a T-shaped shear steel plate reserved groove 3 is provided at one end where two adjacent concrete guardrail sections 1 are spliced. The two ends of the H-shaped shear steel plate 2 are respectively embedded in the shear steel plate reserved groove 3 of the two adjacent concrete guardrail sections 1. The H-shaped shear steel plate 2 connects the two adjacent concrete guardrail sections 1 together by using the T-shaped shear steel plate reserved groove 3 at the end of the concrete guardrail 1, so that the concrete guardrail 1 is connected as a whole and the force is continuous.

[0032] A solar panel 38 is installed on the top of the concrete guardrail 1; a top longitudinal wiring groove 29 is formed on the upper surface of the concrete guardrail 1, and a vertical semi-circular wiring groove 30 is formed on the inner wall of the shear steel plate reserved groove 3; a reserved horizontal wiring groove 5 connected to the vertical semi-circular wiring groove 30 is formed inside the concrete guardrail 1, such as... Figure 5 As shown. The top longitudinal wiring trough 29, the vertical semi-circular wiring trough 30, and the reserved horizontal wiring trough 5 house wiring harnesses that connect the solar panel 38, the electronically controlled delineator 4, and the electronic monitoring box 26. The electronic monitoring box 26 is installed on the concrete guardrail 1 at the very end. The electronic monitoring box 26, placed at the end of the concrete guardrail 1, contains a built-in battery and a climate sensor. It provides power to the electromagnet 31 and the resistance wire of the electronically controlled delineator 4. The climate sensor transmits electrical signals to the electromagnet 31 and the resistance wire by sensing changes in humidity and temperature. When the humidity reaches a preset standard for identifying rain or snow, power is supplied to the electromagnet 31; when the temperature simultaneously drops below 0°C, power is also supplied to the resistance wire built into the electronically controlled delineator 4. The top of the concrete guardrail 1 is covered with a solar panel 38, which converts solar energy into electrical energy on sunny days and stores it in a small battery inside the electronic monitoring box 26.

[0033] The water-blocking assembly includes a water-blocking plate 16, which is disposed within the snow removal chute 32. A mechanical movement cavity 33 is pre-reserved at the top of the water-blocking plate 16. Two sliding steel plates 17 are respectively disposed on both sides of the water-blocking plate 16. Limiting grooves 35 are formed on the contact surfaces of the sliding steel plates 17 and the water-blocking plate 16, and the limiting grooves 35 are inclined. The two sides of the water-blocking plate 16 are slidably disposed within the limiting grooves 35 of the sliding steel plates 17. Two electromagnets 31 are respectively disposed on both sides of the two sliding steel plates 17. When the electromagnets 31 are energized, they drive the two sliding steel plates 17 to move towards each other. The movement of the two sliding steel plates 17 towards each other pushes the water-blocking plate 16 upward, opening the snow removal chute 32.

[0034] When the weather is fine, the two sliding steel plates 17 are located on both sides, and the water baffle 16 blocks the snow removal channel 32. On rainy days, the electromagnet 31 drives the two sliding steel plates 17 to move inward, and the two sliding steel plates 17 push the water baffle 16 upward, opening the snow removal channel 32 to allow rain and snow to drain. The sliding steel plates 17 have limit grooves 35 to control the displacement of the water baffle 16 and prevent it from becoming dislodged.

[0035] The bottom of the rain grate 13 is hinged to the bottom of the snow removal trough 32 via a hinge 14. A stop 12 is fixed to the top of the snow removal trough 32, which blocks the rain grate 13. The rain grate 13 is connected to two sliding steel plates 17 via a chain 15, which is connected to the hinge anchor hole 34 of the sliding steel plate 17. The rain grate 13 can rotate relative to the hinge 14. When the weather is fine, the two sliding steel plates 17 are on both sides, and the chain 15 pulls the rain grate 13 upright, blocking the snow removal trough 32 and filtering out debris. On rainy days, the two sliding steel plates 17 move inward, the chain 15 loosens, and the rain grate 13 falls down, ensuring that rain and snow can be discharged smoothly.

[0036] Lay down the rain grate, and fill the space between the inner wall of the mechanical moving chamber and the sliding steel plate through the snow removal channel to prevent debris from entering the reserved mechanical moving chamber during rain and snow drainage. Release the rain grate, and the sliding steel plate will slide to both sides under the gravity of the baffle plate, and the rain grate will be pulled up and closed.

[0037] The bottom of the sliding steel plate 17 is provided with a PTFE sliding plate 36 to reduce the sliding resistance of the sliding steel plate 17.

[0038] A shear groove 37 is provided in the snow removal channel 32, located directly below the water retainer 16. The bottom of the water retainer 16 is embedded in the shear groove 37 reserved in the pavement of the bridge deck 27 to ensure the overall stability of the guardrail.

[0039] A semi-circular groove 6 for surface wiring is provided on the inner side of the concrete guardrail 1. A snow dredging top wiring conduit 11 is installed on the top 21 of the snow dredging ditch 32. Wire harnesses are run inside the semi-circular groove 6 and the snow dredging top wiring conduit 11 for connecting the electronic monitoring box 26 and the electromagnet 31. The top longitudinal wiring groove 29 is located at the top of the shear steel plate reserved groove 3 and is connected to the electronic monitoring box 26. The electrical signal is transmitted to the resistance wire inside the electrical control delineator 4 through the wiring inside the electronic monitoring box 26, the longitudinal wiring groove, the vertical semi-circular wiring groove 30, and the reserved horizontal wiring groove 5. The electrical signal is then transmitted to the electromagnet 31 through the wiring inside the semi-circular groove 6 and the snow dredging top wiring conduit 11. The snow dredging top wiring conduit 11 and the reserved horizontal wiring groove 5 use PVC pipes with reserved holes, while the longitudinal wiring groove and the vertical semi-circular wiring groove 30 both use semi-circular pipes with reserved wiring holes, providing convenience for future operation and maintenance.

[0040] Anchor bolt holes 7 are provided at the bottom of the concrete guardrail 1 and the top of the bridge deck 27, and anchor bolts 8 are installed in the anchor bolt holes 7. An anchoring groove 9 is provided on the side of the concrete guardrail 1. An adjusting nut 10 is threaded onto the anchor bolt 8, and a rigid washer 23 is provided between the adjusting nut 10 and the anchoring groove 9. When a wrench is inserted into the anchoring groove 9, the adjusting nut 10 is rotated. Due to the support of the rigid washer 23, the adjusting nut 10 will not move downward. At the same time, the adjusting nut 10 drives the anchor bolt 8 to move downward until the bottom of the anchor bolt 8 extends into the bottom of the anchor bolt hole 7, thus connecting the concrete guardrail 1 and the bridge deck 27, and providing a second layer of protection for the installation of the concrete guardrail 1.

[0041] After the shear-resistant steel plate reserved groove 3 and the anchoring reserved groove 9 have completed their intended functions, the openings can be sealed with cement mortar to prevent water damage. When the guardrail is replaced later, the seal can be broken and removed.

[0042] The working principle of this embodiment is as follows: When the weather is fine, the iron chain 15 on the underside of the rain grate 13 tightens as the sliding steel plate 17 moves to both sides, effectively filtering out debris. On rainy days, the electromagnet 31 is energized, the sliding steel plate 17 moves inward, the iron chain 15 loosens, and the rain grate 13 falls down, ensuring smooth drainage of rain and snow. The sensor control system can sense weather conditions and simultaneously control the output current. When the humidity reaches the preset standard for identifying rain and snow, power is supplied to the electromagnet 31 to ensure the drainage of rain and snow. Simultaneously, when the temperature drops below 0℃, power is also supplied to the resistance wire built into the electronically controlled delineator 4 to melt the ice and snow on its surface.

[0043] When maintenance of the wiring harness is required later, inspect the location of the damage. Based on the location of the damage, peel off the solar panel 38 or scrape off the mortar on the outside of the semi-circular groove 6 for maintenance. When it is necessary to replace the concrete guardrail section 1, remove the top solar panel 38, cut the wiring harness, cut the corresponding short expansion bolts 20, loosen the threaded anchor bolts 8 of the corresponding section, pull out the H-shaped shear steel plate 2, and reassemble according to the construction process.

[0044] Example 2 This embodiment, based on the environmentally adaptive snow and ice melting concrete guardrail 1 provided in Embodiment 1, provides a construction method for the environmentally adaptive snow and ice melting concrete guardrail 1, including the following steps: S1: Precast main beam 28 and bridge deck 27; When prefabricating the main beam 28, pay attention to reserving anchor bolt holes 7 and pre-embedding connecting steel plates 22. When pouring the bridge deck 27 paving, pay attention to reserving anchor bolt holes 7 and keep the bottom of the bridge deck 27 paving with the same 1.5% cross slope as the area with vehicles. Rain and snow are discharged to the outside of the bridge by their own weight and wind force.

[0045] S2: Segmented concrete guardrail 1; During pouring, pay attention to all reserved corresponding holes, pre-set sliding steel plates 17 and rain grate 13 and other corresponding snow-clearing and ice-melting structures, and pre-embed corresponding wire harnesses. The length of the guardrail segment is consistent with the length of the main beam 28 of the prefabricated bridge. When used for cast-in-place bridges with a span of more than 50m, the segment length shall not exceed 50m.

[0046] S3: Slide the concrete guardrail 1 to the installation position on the bridge deck 27; The steel sliding foot 24 at the bottom of the concrete guardrail 1 is installed in the groove 25 at the top of the bridge deck 27. The liquid colloid drug bag is placed inside the groove 25. The concrete guardrail 1 is pushed into place in sections towards the center of the bridge using a jacking process. It is necessary to ensure that the upper and lower structures are aligned to ensure that the threaded anchor bolts 8 can be successfully connected. During the jacking process, the drug bag breaks, which cures the concrete guardrail 1 and the bridge deck 27.

[0047] S4: Install anchor bolts 8 and splicing components to connect and fix the concrete guardrail 1; Angle steel plates 19 are inserted into the angle steel plate grooves 18 on the side of the concrete guardrail 1, and the pre-embedded connecting steel plates 22 and angle steel plates 19 are fixed with expansion bolts 20. Epoxy resin or other chemical adhesives can also be poured into the angle steel plate grooves 18 to ensure a stable connection after the angle steel plates 19 are inserted. H-shaped shear steel plates 2 are inserted into the shear steel plate pre-reserved grooves 3 to connect adjacent sections of the concrete guardrail 1; the adjusting nuts 10 are tightened using an electric wrench until the anchor bolts 8 reach the bottom of the anchor bolt holes 7, ensuring a secure connection between each section of the concrete guardrail 1 and the main beam 28.

[0048] S5: Install solar panel 38, electrical control delineator 4 and electronic monitoring box 26; The electrical control delineator 4 is connected and fixed to the outside of the reserved horizontal cable tray 5; the top of the shear steel plate reserved groove 3 is the top longitudinal cable tray 29, in which longitudinal wire harnesses are laid, and the longitudinal wire harnesses are connected to the wire harnesses in the vertical semi-circular cable tray 30, while the ends of the wire harnesses are connected to the electronic monitoring box 26; cement mortar is used to seal the outside of the surface cable tray semi-circular groove 6. A solar panel 38 is installed on the top of the concrete guardrail 1. The solar panel 38 converts light energy into electrical energy and stores it in the small battery in the electronic monitoring box 26. At the same time, the solar panel 38 also serves to shield the top longitudinal cable tray 29 from rain and snow.

[0049] Those skilled in the art will recognize that the embodiments described herein are intended to help the reader understand the principles of the invention and should be understood as not limiting the scope of protection of the invention to such specific statements and embodiments. Those skilled in the art can make various other specific modifications and combinations based on the technical teachings disclosed herein without departing from the spirit of the invention, and these modifications and combinations are still within the scope of protection of the invention.

Claims

1. An environmentally adaptive snow and ice melting concrete guardrail, characterized in that: The system includes several sections of concrete guardrail (1) installed on the bridge deck (27). Each section of concrete guardrail (1) is equipped with a steel sliding foot (24) at the bottom. The top of the bridge deck (27) is provided with a sliding groove (25), and the steel sliding foot (24) is slidably disposed in the sliding groove (25). Adjacent sections of concrete guardrail (1) are connected by splicing components. The bottom of the concrete guardrail (1) is fixed to the bridge deck (27) by anchor bolts (8). A snow removal groove (32) is provided in the middle of each section of the concrete guardrail (1). A water-blocking component is movably disposed inside the snow removal groove (32). A rain grate (13) is provided at the opening of the snow removal groove (32). An electrically controlled delineator (4) is provided on the inner side of the concrete guardrail (1).

2. The environmentally adaptive snow-removing and ice-melting concrete guardrail according to claim 1, characterized in that: The splicing assembly includes an angle steel plate (19), expansion bolts (20), and a pre-embedded connecting steel plate (22); one side of the angle steel plate (19) is fixed inside the angle steel plate groove (18) on the side of the concrete guardrail (1), and the other side of the angle steel plate (19) is attached to the side wall of the concrete guardrail (1); the bottom of the pre-embedded connecting steel plate (22) is provided with a bent part, which is pre-embedded inside the main beam (28) at the bottom of the bridge deck (27), and the top of the pre-embedded connecting steel plate (22) is connected to the angle steel plate (19) by expansion bolts (20).

3. The environmentally adaptive snow and ice melting concrete guardrail according to claim 2, characterized in that: The splicing assembly also includes an H-shaped shear steel plate (2); a T-shaped shear steel plate reserved groove (3) is provided at one end of the splicing of two adjacent concrete guardrail sections (1), and the two ends of the H-shaped shear steel plate (2) are respectively embedded in the shear steel plate reserved groove (3) of the two adjacent concrete guardrail sections (1).

4. The environmentally adaptive snow and ice melting concrete guardrail according to claim 3, characterized in that: A solar panel (38) is installed on the top of the concrete guardrail (1); a top longitudinal wiring groove (29) is opened on the upper surface of the concrete guardrail (1), a vertical semi-circular wiring groove (30) is opened on the inner wall of the anti-shear steel plate reserved groove (3), and a reserved horizontal wiring groove (5) connected to the vertical semi-circular wiring groove (30) is opened inside the concrete guardrail (1); wire harnesses are laid inside the top longitudinal wiring groove (29), the vertical semi-circular wiring groove (30) and the reserved horizontal wiring groove (5) to connect the solar panel (38), the electric control delineator (4) and the electronic monitoring box (26), and the electronic monitoring box (26) is installed on the concrete guardrail (1) at the far end.

5. The environmentally adaptive snow and ice melting concrete guardrail according to claim 4, characterized in that: The water-blocking assembly includes a water-blocking plate (16), which is disposed in the snow removal channel (32). A mechanical moving cavity (33) is reserved at the top of the water-blocking plate (16). Two sliding steel plates (17) are respectively disposed on both sides of the water-blocking plate (16). A limiting groove (35) is opened on the contact surface between the sliding steel plate (17) and the water-blocking plate (16). The limiting groove (35) is inclined. The two sides of the water-blocking plate (16) are slidably disposed in the limiting groove (35) of the sliding steel plate (17). Two electromagnets (31) are respectively provided on both sides of the two sliding steel plates (17). When the electromagnets (31) are energized, they drive the two sliding steel plates (17) to move towards each other. When the two sliding steel plates (17) move towards each other, they push the baffle plate (16) to lift upwards, and the snow removal channel (32) opens.

6. The environmentally adaptive snow and ice melting concrete guardrail according to claim 5, characterized in that: The bottom of the rain grate (13) is hinged to the bottom of the opening of the snow removal channel (32) by a hinge (14). A stop (12) is fixed to the top of the opening of the snow removal channel (32), and the stop (12) blocks the rain grate (13). The rain grate (13) is connected to two sliding steel plates (17) by an iron chain (15), and the iron chain (15) is connected to the hinge anchor hole (34) of the sliding steel plate (17).

7. The environmentally adaptive snow and ice melting concrete guardrail according to claim 5, characterized in that: The bottom of the sliding steel plate (17) is provided with a PTFE sliding plate (36). The snow removal channel (32) is provided with a shear groove (37) located directly below the water baffle (16), and the bottom of the water baffle (16) is embedded in the shear groove (37).

8. The environmentally adaptive snow and ice melting concrete guardrail according to claim 5, characterized in that: The inner side of the concrete guardrail (1) is provided with a surface wiring semicircular groove (6), and the top of the snow removal groove (32) is provided with a snow removal groove top wiring pipe (11). The surface wiring semicircular groove (6) and the snow removal groove top wiring pipe (11) are provided with wire harnesses for connecting the electronic monitoring box (26) and the electromagnet (31).

9. The environmentally adaptive snow-removing and ice-melting concrete guardrail according to any one of claims 1 to 8, characterized in that: Anchor bolt holes (7) are provided at the bottom of the concrete guardrail (1) and at the top of the bridge deck (27), and anchor bolts (8) are provided in the anchor bolt holes (7); a reserved groove (9) for anchoring is provided on the side of the concrete guardrail (1), and an adjusting nut (10) is threaded onto the anchor bolt (8), and a steel washer (23) is provided between the adjusting nut (10) and the reserved groove (9).

10. A construction method for an environmentally adaptive snow and ice melting concrete guardrail according to any one of claims 1 to 9, characterized in that, Includes the following steps: S1: Precast main beam (28) and bridge deck (27); S2: Segmented concrete guardrail (1); S3: Slide the concrete guardrail (1) to the installation position on the bridge deck (27); S4: Install anchor bolts (8) and splicing components to connect and fix the concrete guardrail (1); S5: Install solar panels (38), electrical control delineators (4), and electronic monitoring boxes (26).

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