Combined wave-shaped beam guardrail based on precast concrete base and modular construction method of combined wave-shaped beam guardrail

Abstract

The invention provides a combined wave-shaped beam guardrail based on a precast concrete base and a modular construction method of the combined wave-shaped beam guardrail. The guardrail comprises a prefabricated concrete base, a stand column, a mounting frame and a wave-shaped beam. Reserved holes are formed in the middle of the base and used for fixing the stand columns, and embedded steel bar sleeves on the two sides are connected with steel bars in a road to enhance stability; the top of the stand column is connected with the mounting frame, and the two sides of the stand column are fixed with the corrugated beams. Compared with a traditional cast-in-place process, through the standardized prefabricated base and modular design, rapid installation is achieved, the anti-overturning capacity is remarkably improved through anchoring of the pre-embedded sleeve and the steel bars, meanwhile, replacement of independent parts is supported, the maintenance cost is reduced, and the bearing capacity of the stand column can be enhanced through the preformed hole grouting process.

Description

Technical Field

[0001] The present invention relates to the field of road traffic facilities, and in particular to a combined corrugated beam guardrail based on a precast concrete base and a modular construction method thereof. Background Art

[0002] In the existing field of road safety protection, corrugated beam guardrails are widely used as important safety facilities in the central isolation zone of roads. However, the traditional corrugated beam guardrail installation process has the following shortcomings: the traditional process mostly uses the method of pouring concrete base on site, which requires long-term maintenance, resulting in a longer construction period and occupying road resources and affecting traffic; some prefabricated bases lack effective fixing measures (such as embedded parts), which are easy to loosen under vehicle collision or long-term load, reducing the protection ability. Summary of the invention

[0003] An object of the present invention is to provide a combined corrugated beam guardrail based on a precast concrete base, aiming to improve construction efficiency and enhance structural stability.

[0004] To achieve the above object, the technical solution adopted by the present invention is: to provide a combined corrugated beam guardrail based on a precast concrete base, the combined corrugated beam guardrail based on a precast concrete base comprising:

[0005] A precast concrete base, wherein a reserved hole is provided in the middle of the precast concrete base, and pre-buried steel sleeves are provided on both sides of the precast concrete base, and the precast concrete base is fixed to the central isolation zone of the road;

[0006] A column, wherein the column is fixed in a reserved hole of the precast concrete base;

[0007] A mounting frame, the mounting frame is mounted on the top of the column;

[0008] A corrugated beam guardrail is fixed on both sides of the mounting frame.

[0009] In one embodiment, the mounting frame comprises:

[0010] A mounting cap, the mounting cap is sleeved and fixed on the top of the column;

[0011] Wing plates, the wing plates are arranged on both sides of the mounting cap;

[0012] A mounting plate, the mounting plate being fixed to the end of the wing plate, and the corrugated beam guardrail being fixed to the mounting plate;

[0013] The mounting cap, wing plate and mounting plate adopt an integrated structure.

[0014] In one embodiment, it further comprises a plurality of sliding guides, wherein the sliding guides are slidably disposed on the corrugated beam guardrail, and the sliding guides comprise:

[0015] A sliding guide plate, wherein the sliding guide plate is slidably sleeved on the corrugated beam guardrail;

[0016] The rotating guide cylinder is rotatably arranged on the outer side of the sliding guide plate, and the rotating direction of the rotating guide cylinder is perpendicular to the horizontal plane.

[0017] In one embodiment, the rotating guide cylinder includes a rigid rotating shaft and an elastic layer covering the outside of the rigid rotating shaft, and the rigid rotating shaft is rotatably disposed on the sliding guide plate.

[0018] In one embodiment, the sliding guide portion also includes a guide rod and an elastic member sleeved on the guide rod, the guide rod is arranged along the length direction of the corrugated beam guardrail, the guide rod is fixed on the mounting frame, and the sliding guide plate is slidably arranged on the guide rod, one end of the elastic member is connected to the mounting frame, and the other end of the elastic member is connected to the sliding guide plate.

[0019] In one embodiment, the sliding guide plate includes a first guide plate and a second guide plate, the top of the first guide plate exceeds the top height of the corrugated beam guardrail by 60 to 90 cm, and the inner side of the first guide plate extends toward the direction close to the other side of the corrugated beam guardrail; the first guide plate and the second guide plate are spaced apart, and the sliding guide plates at the corresponding positions of the two corrugated beam guardrails are the first guide plate and the second guide plate respectively.

[0020] In one embodiment, a water storage bag is further included, and the water storage bag is located between the two corrugated beam guardrails. The front and rear sides of the water storage bag are respectively fixed on the first guide plates on the two corrugated beam guardrails. The top height of the water storage bag is flush with the top height of the corrugated beam guardrails, and a water outlet hole is opened at the top of the water storage bag near the first guide plate and the second guide plate. The water storage bag is provided with a water injection hole, and a sealing cover is provided on the water injection hole.

[0021] Another object of the present invention is to provide a modular construction method of a combined corrugated beam guardrail based on a precast concrete base, which is used to install the combined corrugated beam guardrail based on a precast concrete base described in the above embodiment. The modular construction method of the combined corrugated beam guardrail based on a precast concrete base comprises the following steps:

[0022] S1. Positioning and fixing the prefabricated base: transport the prefabricated concrete base to the preset position of the central isolation zone of the road, and fix it in the isolation zone foundation through anchor bars or expansion bolts at the bottom of the base;

[0023] S2. Installation and calibration of columns: insert the columns into the reserved holes of the precast concrete base, fix the columns by grouting in the holes or by mechanical anchors, and use a level to adjust the verticality of the columns to ensure that the axis of the columns is perpendicular to the center line of the road;

[0024] S3, the mounting frame is integrated and mounted on the top of the column and fixed by bolts or buckles;

[0025] S4, installation of the sliding guide part, sleeve the sliding guide plate on the guide rod and the corrugated beam guardrail, and sleeve the elastic member on the outer periphery of the guide rod; install the rigid rotating shaft of the rotating guide cylinder on the outer side of the sliding guide plate through the bearing, and ensure that it can rotate freely around the horizontal axis;

[0026] S5. Modular splicing of corrugated beam guardrail panels. Fix the corrugated beam guardrail panel units to both sides of the mounting frame by bolts or rivets. Adjacent corrugated beam guardrails are connected by lap joints or plug-in connections to ensure that the corrugated beam guardrails are continuous and have no obvious gaps. Fix the two ends of the guide rod to the mounting frame by welding or threaded connection.

[0027] S6. Fix the water bag. Expand the water bag longitudinally along the guardrail, fix the front and rear ends of the water bag to the first guide plates of the guardrails on both sides through hooks or clamps, make the top of the water bag flush with the top of the guardrail, and make the water outlet of the water bag face the first guide plate / second guide plate, and inject a proper amount of water through the water injection hole to increase the collision buffering performance;

[0028] S7. System integration and acceptance: check the connection firmness of each component, test the elastic reset function of the sliding guide and the rotation flexibility of the rotating guide cylinder, ensure that the water storage bag is leak-free, and finally verify the anti-collision performance of the overall guardrail through a load test.

[0029] One or more of the above technical solutions in the embodiments of the present invention have at least the following technical effects or advantages:

[0030] The combined corrugated beam guardrail based on the precast concrete base and its modular construction method provided by the embodiment of the present invention adopts the factory-standardized production of the precast concrete base. The columns only need to be quickly installed through the reserved holes on site. The pre-buried steel sleeve is connected with the steel bars in the road isolation zone, which greatly shortens the construction period and does not require wet work on site, thereby reducing the impact on traffic. In addition, the pre-buried steel sleeve forms an anchoring system with the steel bars inside the road, which significantly improves the pull-out resistance and overturning resistance of the base, and is particularly suitable for soft soil roadbeds or sections with high collision risks; the tight fit between the reserved holes and the columns (which can be filled with high-strength grouting materials) enhances the vertical bearing capacity of the columns and avoids the defect of easy loosening of traditional plug-in connections. In addition, the combined structure (base-column-mounting frame-corrugated beam) supports the replacement of independent components. For example, the corrugated beam damaged by the collision can be quickly disassembled and replaced through the mounting frame without destroying the overall structure, thereby reducing maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 A schematic structural diagram of a single section of a combined corrugated beam guardrail based on a precast concrete base provided in an embodiment of the present invention;

[0033] Figure 2 A schematic diagram of the structure of two connected sections of a combined corrugated beam guardrail based on a precast concrete base provided in an embodiment of the present invention;

[0034] Figure 3 A schematic diagram of the structure of two connected sections of a combined corrugated beam guardrail based on a precast concrete base is provided for another embodiment of the present invention;

[0035] Figure 4 for Figure 3 Schematic diagram of the composite corrugated beam guardrail based on the precast concrete base when it is hit again;

[0036] Figure 5 for Figure 3 Schematic diagram of the cross section of the composite corrugated beam guardrail based on a precast concrete base along the center of the sliding guide plate.

[0037] The respective reference numerals are as follows:

[0038] 1. Precast concrete base; 2. Column; 3. Mounting frame; 4. Corrugated beam guardrail; 5. Sliding guide part; 6. Water storage bag; 11. Reserved hole; 12. Embedded steel casing; 31. Mounting cap; 32. Wing plate; 33. Mounting plate; 51. Sliding guide plate; 52. Rotating guide cylinder; 53. Guide rod; 54. Elastic member; 61. Water outlet; 62. Water injection hole; 511. First guide plate; 512. Second guide plate; 521. Rigid shaft; 522. Elastic layer. DETAILED DESCRIPTION

[0039] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0040] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0041] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0042] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] See also Figure 1 to Figure 2The embodiment of the present application provides a combined corrugated beam guardrail 4 based on a precast concrete base, comprising a precast concrete base 1, a column 2, a mounting frame 3, and a corrugated beam guardrail 4. A reserved hole 11 is provided in the middle of the precast concrete base 1, and embedded steel sleeves 12 are provided on both sides of the precast concrete base 1. The precast concrete base 1 is fixed to the central isolation zone of the road; the column 2 is fixed in the reserved hole 11 of the precast concrete base 1; the mounting frame 3 is installed on the top of the column 2; and the corrugated beam guardrail 4 is fixed on both sides of the mounting frame 3.

[0044] Specifically, a hole 11 (shape and size adapted to the cross section of the column 2) is reserved in the middle of the prefabricated base, and spiral steel casings are embedded on both sides (30-50 cm deep into the road base), and a three-dimensional anchoring system is formed with the steel skeleton inside the road through embedded bars or mechanical anchors. The column 2 is made of galvanized H-shaped steel or round steel pipe. After the bottom is inserted into the reserved hole 11, high-strength non-shrinkage grouting material is poured. The corrugated beam can be fixed to both sides of the mounting frame 3 by anti-theft bolts to form a continuous protection unit. Optionally, the reserved hole 11 can be designed as a trapezoidal gradient cross section, and the bottom expansion section enhances the grouting anchoring effect. Anti-slip texture is set on the surface of the base to improve the bite friction with the road pavement layer.

[0045] In one embodiment, the mounting frame 3 includes a mounting cap 31, a wing plate 32, and a mounting plate 33 (specifically, it can be a folded flat plate with an oblong hole, connected to the corrugated beam by an M16-35 anti-theft bolt, and the holes are arranged at intervals of 20 cm in the longitudinal direction). The mounting cap 31 is sleeved and fixed on the top of the column 2; the wing plates 32 are arranged on both sides of the mounting cap 31; the mounting plate 33 is fixed to the end of the wing plate 32, and the corrugated beam guardrail 4 is fixed on the mounting plate 33; the mounting cap 31, the wing plate 32, and the mounting plate 33 adopt an integrated structure. The integrated design eliminates welding stress concentration, greatly improves the bending bearing capacity of the mounting frame 3, and can also simplify the mutual assembly and fixation between the mounting cap 31, the wing plate 32, and the mounting plate 33 during the installation of the guardrail, making the installation process convenient and efficient.

[0046] like Figure 3 As shown, in one embodiment, it further includes a plurality of sliding guides 5, which are slidably arranged on the corrugated beam guardrail 4, and the sliding guides 5 include a sliding guide plate 51 and a rotating guide cylinder 52. The sliding guide plate 51 is slidably sleeved on the corrugated beam guardrail 4. The rotating guide cylinder 52 is rotatably arranged on the outer side of the sliding guide plate 51, and the rotating direction of the rotating guide cylinder 52 is perpendicular to the horizontal plane.

[0047] Several sliding guide parts 5 are added to the combined corrugated beam guardrail 4 of the precast concrete base 1, including a sliding guide plate 51 and a rotating guide cylinder 52. The sliding guide plate 51 can slide along the length direction of the guardrail, and the rotating guide cylinder 52 can be rotatably installed on the outer side of the sliding guide plate 51 through a bearing, and its rotation axis is perpendicular to the horizontal plane (i.e., it rotates around the vertical axis). Then, when the vehicle collides, the rotating guide cylinder 52 rotates around the vertical axis under the impact force, decomposing the frontal impact force of the vehicle into a tangential force, reducing the impact angle, and reducing the damage to the vehicle and the occupants caused by the impact force. According to the momentum theorem, the direction of the impact force is consistent with the normal direction of the contact surface. After the rotating guide cylinder 52 rotates, the normal direction of the contact surface changes, causing the vehicle collision direction to deviate from the original normal direction of the guardrail, thereby reducing the effective impact force. In addition, when the sliding guide plate 51 slides along the guardrail, friction is generated with the surface of the guardrail, converting the vehicle's kinetic energy into heat energy, further consuming the impact energy.

[0048] like Figure 5 As shown, in one embodiment, the rotating guide cylinder 52 includes a rigid rotating shaft 521 and an elastic layer 522 covering the outside of the rigid rotating shaft 521, and the rigid rotating shaft 521 can be rotatably arranged on the sliding guide plate 51. The rotating guide cylinder 52 is composed of the rigid rotating shaft 521 and the elastic layer 522 (such as rubber) covering the outside, and the rigid rotating shaft 521 is fixed to the sliding guide plate 51 through a bearing. The elastic layer 522 produces a large deformation when under pressure, absorbs impact energy, and reduces vehicle damage. The rigid rotating shaft 521 ensures the bending strength of the rotating guide cylinder 52 to avoid deformation and failure during collision.

[0049] In one embodiment, the sliding guide plate 51 includes a first guide plate 511 and a second guide plate 512. The top of the first guide plate 511 exceeds the top height of the corrugated beam guardrail 4 by 60 to 90 cm, and the inner side of the first guide plate 511 extends toward the direction close to the corrugated beam guardrail 4 on the other side; the first guide plate 511 and the second guide plate 512 are arranged at intervals, and the sliding guide plates 51 at the corresponding positions of the two corrugated beam guardrails 4 are respectively the first guide plate 511 and the second guide plate 512. By setting the first guide plate 511, the upwardly protruding first guide plate 511 can block the light source of the vehicle in the opposite lane when driving at night, avoiding glare and endangering driving safety. In addition, the first guide plate 511 can also play a blocking and protective role, preventing stones and other debris in the opposite lane from being crushed by vehicles and flying to the lane, causing harm to the vehicles in the lane.

[0050] In one embodiment, the sliding guide part 5 further includes a guide rod 53 and an elastic member 54 sleeved on the guide rod 53. The guide rod 53 is arranged along the length direction of the corrugated beam guardrail 4. The guide rod 53 is fixed on the mounting frame 3, and the sliding guide plate 51 is slidably arranged on the guide rod 53. One end of the elastic member 54 is connected to the mounting frame 3, and the other end of the elastic member 54 is connected to the sliding guide plate 51. By adding the guide rod 53 and the elastic member 54 (such as a spring) to the sliding guide part 5, the guide rod 53 is fixed to the mounting frame 3 along the longitudinal direction of the guardrail, and the sliding guide plate 51 can slide along the guide rod 53. The two ends of the elastic member 54 are respectively connected to the mounting frame 3 and the sliding guide plate 51. Among them, the guide rod 53 limits the movement direction of the sliding guide plate 51 and the extension direction of the elastic member 54 to prevent lateral deviation.

[0051] The first guide plate 511 can achieve a noise reduction effect. When the noise generated by passing vehicles acts on the first guide plate 511, the sound wave energy of the noise can be transmitted to the elastic member 54 through the first guide plate 511. The elastic deformation of the elastic member is used to store the sound wave energy of the noise as elastic potential energy and the friction heat energy generated by the mutual movement between the first guide plate 511 and the corrugated beam guardrail, thereby achieving the effect of sound absorption and noise reduction.

[0052] In one embodiment, a water storage bag 6 is further included. The water storage bag 6 is located between the two corrugated beam guardrails 4. The front and rear sides of the water storage bag 6 are respectively fixed on the first guide plate 511 on the two corrugated beam guardrails 4. The top height of the water storage bag 6 is flush with the top height of the corrugated beam guardrails 4. A water outlet hole 61 is opened at the top of the water storage bag 6 near the first guide plate 511 and the second guide plate 512. A water injection hole 62 is provided on the water storage bag 6, and a sealing cover is provided on the water injection hole 62.

[0053] like Figure 4 As shown, when the vehicle hits the rotating guide cylinder on the first guide plate 511, and the angle between the vehicle and the corrugated beam guardrail 4 is small, the first guide plate 511 slides forward along the corrugated beam guardrail 4, squeezing the water storage bag 6 between the two first guide plates 511, so that the water in the water storage bag 6 sprays out from the water outlet 61 and flows to the various sliding guide parts 5 around the water storage bag 6, thereby cooling and lubricating the rotating guide cylinder 52 and the corrugated beam guardrail 4 to reduce the damage suffered by the vehicle when it rubs against the guardrail. At the same time, the water storage bag 6 can be deformed when squeezed by the first guide plate 511 to consume the impact kinetic energy and improve the anti-collision performance of the guardrail. Optionally, in order to reduce the evaporation of water in the water storage bag 6, a sealing cover is installed on the water injection hole 62, and the water injection hole 62 is closed by the sealing cover; in addition, a pressure valve can be set at the water outlet 61, so that the water in the water storage bag 6 will not evaporate outward through the water outlet 61 under normal circumstances.

[0054] Therefore, the combined corrugated beam guardrail 4 based on the precast concrete base 1 provided by the present application can form a chain reaction of dissipating kinetic energy step by step through the rotating guide cylinder 52 (elastic layer 522) → sliding guide plate 51 (friction) → spring → water storage bag 6. In addition, the functions of anti-glare, anti-foreign matter, lubrication and cooling are integrated through structural design without the need for additional equipment. In low-intensity collisions, the elastic layer 522 and the spring dominate the energy absorption, and in high-intensity collisions, the water storage bag 6 and the water hammer effect intervene, realizing passive safety hierarchical protection with adaptive response.

[0055] Another object of the present invention is to provide a modular construction method of a combined corrugated beam guardrail 4 based on a precast concrete base, which is used to install the combined corrugated beam guardrail 4 based on a precast concrete base in the above embodiment. The modular construction method of the combined corrugated beam guardrail 4 based on a precast concrete base comprises the following steps:

[0056] S1, positioning and fixing the prefabricated base, transporting the prefabricated concrete base 1 to the preset position of the central isolation zone of the road, and fixing it in the isolation zone foundation through the anchor bars or expansion bolts at the bottom of the base;

[0057] S2. Installation and calibration of column 2: insert column 2 into the reserved hole 11 of precast concrete base 1, fix column 2 by grouting in the hole or mechanical anchors, use level to adjust verticality of column 2 to ensure that axis of column 2 is perpendicular to the center line of the road; after column 2 is grouted through the reserved hole 11 or fixed by mechanical anchors, use level to calibrate to ensure that axis of guardrail is perpendicular to the center line of road to improve overall impact resistance.

[0058] S3, the mounting frame 3 is integrated and mounted on the top of the column 2 and fixed by bolts or buckles;

[0059] S4, installing the sliding guide part 5, sleeve the sliding guide plate 51 on the guide rod 53 and the corrugated beam guardrail 4, and sleeve the elastic member 54 on the outer periphery of the guide rod 53; install the rigid rotating shaft 521 of the rotating guide cylinder 52 on the outer side of the sliding guide plate 51 through the bearing, and ensure that it can rotate freely around the horizontal axis;

[0060] S5. The corrugated beam guardrail 4 plates are modularly spliced. The corrugated beam guardrail 4 plate units are fixed to the two sides of the mounting frame 3 by bolts or rivets. Adjacent corrugated beam guardrails 4 are overlapped or plug-in connected to ensure that the corrugated beam guardrail 4 is continuous and has no obvious gaps. The two ends of the guide rod 53 are fixed to the mounting frame 3 by welding or threaded connection.

[0061] S6, fix the water bag 6, unfold the water bag 6 along the guardrail longitudinally, fix the front and rear ends of the water bag 6 to the first guide plate 511 of the guardrails on both sides by hooks or clamps, make the top of the water bag 6 flush with the top of the guardrail, make the water outlet 61 of the water bag 6 face the first guide plate 511 / the second guide plate 512, and inject a proper amount of water through the water injection hole 62 to increase the collision buffering performance;

[0062] S7, system integration and acceptance, check the connection firmness of each component, test the elastic reset function of the sliding guide part 5 and the rotation flexibility of the rotating guide cylinder 52, ensure that the water storage bag 6 has no leakage, and finally verify the anti-collision performance of the overall guardrail through a load test.

[0063] The factory-prefabricated concrete base has uniform specifications and only needs to be positioned and fixed on site (such as step S1), avoiding the time-consuming steps of formwork support and concrete curing in the traditional cast-in-place process, shortening the construction period. In addition, the steps of inserting the column 2 into the reserved hole 11 (S2), installing the mounting frame 3 (S3), and splicing the guardrail unit (S5) all adopt the "insertion-fixing" or "lap-connection" method, reducing on-site welding or cutting operations and improving installation speed.

[0064] The modular construction method includes base fixing, column 2 installation, mounting frame 3 assembly, sliding guide 5 installation, guardrail board splicing, water storage bag 6 fixing and system joint adjustment. The modular design reduces on-site welding, shortens the construction period, and each component can be replaced independently, reducing maintenance costs.

[0065] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A composite corrugated beam guardrail based on a precast concrete base, characterized in that: The combined corrugated beam guardrail based on the precast concrete base comprises: A precast concrete base, wherein a reserved hole is provided in the middle of the precast concrete base, and pre-buried steel sleeves are provided on both sides of the precast concrete base, and the precast concrete base is fixed to the central isolation zone of the road; A column, wherein the column is fixed in a reserved hole of the precast concrete base; A mounting frame, the mounting frame is mounted on the top of the column; A corrugated beam guardrail is fixed on both sides of the mounting frame.

2. The combined corrugated beam guardrail based on a precast concrete base according to claim 1 is characterized in that: The mounting frame comprises: A mounting cap, the mounting cap is sleeved and fixed on the top of the column; Wing plates, the wing plates are arranged on both sides of the mounting cap; A mounting plate, the mounting plate being fixed to the end of the wing plate, and the corrugated beam guardrail being fixed to the mounting plate; The mounting cap, wing plate and mounting plate adopt an integrated structure.

3. The combined corrugated beam guardrail based on a precast concrete base according to claim 1 is characterized in that: It also includes a plurality of sliding guide parts, which are slidably arranged on the corrugated beam guardrail, and the sliding guide parts include: A sliding guide plate, wherein the sliding guide plate is slidably sleeved on the corrugated beam guardrail; The rotating guide cylinder is rotatably arranged on the outer side of the sliding guide plate, and the rotating direction of the rotating guide cylinder is perpendicular to the horizontal plane.

4. The combined corrugated beam guardrail based on a precast concrete base according to claim 3 is characterized in that: The rotating guide cylinder comprises a rigid rotating shaft and an elastic layer covering the outside of the rigid rotating shaft, and the rigid rotating shaft can be rotatably arranged on the sliding guide plate.

5. The combined corrugated beam guardrail based on a precast concrete base according to claim 4 is characterized in that: The sliding guide part also includes a guide rod and an elastic member sleeved on the guide rod, the guide rod is arranged along the length direction of the corrugated beam guardrail, the guide rod is fixed on the mounting frame, and the sliding guide plate is slidably arranged on the guide rod, one end of the elastic member is connected to the mounting frame, and the other end of the elastic member is connected to the sliding guide plate.

6. The combined corrugated beam guardrail based on a precast concrete base according to claim 5 is characterized in that: The sliding guide plate includes a first guide plate and a second guide plate, the top of the first guide plate exceeds the top height of the corrugated beam guardrail by 60 to 90 cm, and the inner side of the first guide plate extends toward the direction close to the corrugated beam guardrail on the other side; the first guide plate and the second guide plate are spaced apart, and the sliding guide plates at the corresponding positions of the two corrugated beam guardrails are the first guide plate and the second guide plate respectively.

7. The combined corrugated beam guardrail based on a precast concrete base according to claim 6 is characterized in that: It also includes a water storage bag, which is located between the two corrugated beam guardrails. The front and rear sides of the water storage bag are respectively fixed to the first guide plates on the two corrugated beam guardrails. The top height of the water storage bag is flush with the top height of the corrugated beam guardrails. A water outlet hole is opened at the top of the water storage bag near the first guide plate and the second guide plate. The water storage bag is provided with a water injection hole, and a sealing cover is provided on the water injection hole.

8. A modular construction method for a combined corrugated beam guardrail based on a precast concrete base, used for installing the combined corrugated beam guardrail based on a precast concrete base according to claim 7, characterized in that: The modular construction method of the combined corrugated beam guardrail based on the precast concrete base comprises the following steps: S1. Positioning and fixing the prefabricated base: transport the prefabricated concrete base to the preset position of the central isolation zone of the road, and fix it in the isolation zone foundation through anchor bars or expansion bolts at the bottom of the base; S2. Installation and calibration of columns: insert the columns into the reserved holes of the precast concrete base, fix the columns by grouting in the holes or by mechanical anchors, and use a level to adjust the verticality of the columns to ensure that the axis of the columns is perpendicular to the center line of the road; S3, the mounting frame is integrated and mounted on the top of the column and fixed by bolts or buckles; S4, installation of the sliding guide part, sleeve the sliding guide plate on the guide rod and the corrugated beam guardrail, and sleeve the elastic member on the outer periphery of the guide rod; install the rigid rotating shaft of the rotating guide cylinder on the outer side of the sliding guide plate through the bearing, and ensure that it can rotate freely around the horizontal axis; S5. Modular splicing of corrugated beam guardrail panels. Fix the corrugated beam guardrail panel units to both sides of the mounting frame by bolts or rivets. Adjacent corrugated beam guardrails are connected by lap joints or plug-in connections to ensure that the corrugated beam guardrails are continuous and have no obvious gaps. Fix the two ends of the guide rod to the mounting frame by welding or threaded connection. S6. Fix the water bag. Expand the water bag longitudinally along the guardrail, fix the front and rear ends of the water bag to the first guide plates of the guardrails on both sides through hooks or clamps, make the top of the water bag flush with the top of the guardrail, and make the water outlet of the water bag face the first guide plate / second guide plate, and inject a proper amount of water through the water injection hole to increase the collision buffering performance; S7. System integration and acceptance: check the connection firmness of each component, test the elastic reset function of the sliding guide and the rotation flexibility of the rotating guide cylinder, ensure that the water storage bag is leak-free, and finally verify the anti-collision performance of the overall guardrail through a load test.

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