Anchorage-free movable steel-concrete guardrail

Abstract

The utility model discloses a kind of movable steel concrete guardrails of exempting from anchoring, belong to traffic safety facilities field.The guardrail includes concrete pedestal, upright, cross beam and two wave board, and is connected through anchoring bolt between concrete pedestal, and one end is provided with boss, the other end is provided with adaptive recess to quickly align;Concrete pedestal is connected with upright through anchoring bolt, and upright and cross beam, cross beam and two wave board are respectively connected through connecting bolt, connection.It does not need to anchor road foundation, each component is connected by standard bolt, can be quickly aligned by means of boss and boss, and it is convenient to assemble, it is convenient to move and reuse, can adapt to temporary protection scene, and it has good stability and crashworthiness.

Description

Technical Field

[0001] This utility model relates to the field of guardrail technology, specifically to an anchor-free movable steel-concrete guardrail. Background Technology

[0002] In the field of road traffic safety, guardrails serve as crucial protective facilities to prevent vehicles from crossing the road or entering oncoming lanes, ensuring traffic order and pedestrian safety. Traditional guardrail installation often requires complex anchoring operations, involving drilling holes in the ground and inserting anchors to secure the guardrails. This anchoring method has several drawbacks. Firstly, the construction process is cumbersome, requiring specialized equipment and personnel, and consuming significant time and labor costs. Secondly, it can damage the road foundation, and when the guardrails need to be repositioned or removed, difficulties arise, hindering flexible relocation and reuse.

[0003] With the development of traffic engineering, higher demands are being placed on the convenience, maintainability, and reusability of guardrails. Some existing movable guardrails are structurally inadequate, employing simple splicing methods and lacking stable and reliable connection structures. When subjected to external forces such as vehicle impacts, they are prone to loosening and insufficient overall stability, failing to effectively provide protection. Therefore, there is an urgent need for an anchor-free and movable guardrail that avoids the shortcomings of traditional anchoring methods while ensuring structural stability and reliable connections, thus meeting the diverse needs of modern traffic engineering. Utility Model Content

[0004] The purpose of this utility model is to provide an anchor-free movable steel-concrete guardrail to solve the above-mentioned technical problems.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an anchor-free movable steel-concrete guardrail, comprising a concrete base, posts, horizontal beams and two-wave plates, wherein multiple sets of concrete bases can be spliced ​​to form a guardrail base of the required length. Each set of concrete bases is provided with insertion holes for column insertion. After the column is inserted into the insertion hole, it is connected to the column by the first anchor bolt to form a fixed connection. The transverse beam is correspondingly set on each set of columns and is fixedly connected to the column by the first connecting bolt. The two-wave plate is fixed to the column by the transverse beam and a second connecting bolt is connected to each set of columns.

[0006] Preferably, the concrete base has an upper extension platform at one end along its length and a lower extension platform at the other end along its length. The lower extension platform has a second anchor bolt at its top, and the upper extension platform has a second anchor hole for insertion into the second anchor bolt on the adjacent concrete base.

[0007] Preferably, the lower extension platform has a boss at the top and a recess at the bottom for matching the boss on the adjacent concrete base. The boss and the recess cooperate with each other to achieve rapid alignment of the adjacent concrete base.

[0008] Preferably, transverse beams are symmetrically arranged on both sides of each set of column positions, and the two-wave plates are symmetrically arranged on the front and rear sides of the transverse beams.

[0009] Preferably, the concrete base is made of C30 concrete.

[0010] Preferably, the columns, crossbeams, and double-wave plates are made of steel.

[0011] Preferably, the first anchor bolt, the second anchor bolt, the first connecting bolt, and the second connecting bolt are all high-strength bolts.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: Anchor-free design: No need for destructive actions such as drilling into the road foundation. Stable placement is achieved through the weight of the concrete base itself and the connection between the bases, which facilitates movement and reuse, reducing construction and maintenance costs. Reliable connection: The components are connected by high-strength bolts, ensuring the stability and impact resistance of the overall structure and effectively improving the protective performance of the guardrail; Reasonable structure: It adopts a steel-concrete composite structure, with a concrete base providing stable support and steel structural components ensuring overall strength, while also having good durability and resistance to deformation. Easy installation: All components are connected by standardized bolts and can be quickly aligned using the boss and countertop mechanism. The assembly process is simple and efficient, allowing for rapid installation and disassembly of the guardrail, meeting the needs of temporary protection, road construction, and other scenarios. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of 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 based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of this embodiment; Figure 2 This is a structural schematic diagram highlighting the lower part of the overall structure in this embodiment; Figure 3 This is a schematic diagram highlighting the concrete base used for splicing one side in this embodiment; Figure 4 This is a perspective view of the concrete base in this embodiment.

[0015] The attached diagram lists the components represented by each number as follows: 1. Concrete base; 2. Column; 3. Horizontal diaphragm; 4. Two-wave plate; 5. First anchor bolt; 6. First connecting bolt; 7. Second connecting bolt; 8. Second anchor bolt; 9. Boss; 10. Recess; 11. Second anchor hole; 12. Upper extension platform; 13. Lower extension platform; 14. Insertion hole. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-4 This utility model provides a technical solution: This embodiment details the specific structure, component connection relationship, and assembly method of an anchor-free movable steel-concrete guardrail. The guardrail is mainly composed of a concrete base 1, posts 2, horizontal beams 3, double-wave plates 4, and various high-strength bolts. Through standardized design and precise connection, each component together achieves the core functions of anchor-free installation, movable adjustment, and stable protection.

[0018] The concrete base 1 serves as the load-bearing foundation of the guardrail. Each base is integrally cast using C30 concrete. Each concrete base 1 can be 2000mm×400mm×400mm (length×width×height), with an integrally formed anti-slip texture with a depth of 5mm at the bottom. The above dimensions are one embodiment and can be adjusted appropriately according to the environment. A cylindrical insertion hole 14 is provided at the center of the top for inserting the post 2 to ensure that the post 2 is evenly stressed after installation. At both ends of the concrete base 1 along its length, an upper extension platform 12 and a lower extension platform 13 are integrally formed. The upper extension platform 12 extends along the width of the base and has a through second anchoring hole 11 on its end face. The lower extension platform 13 is also set along the width, and a second anchoring bolt 8 is fixedly installed near the edge of the top (not integrally formed with the lower extension platform 13; the second anchoring bolt 8 is inserted into the reserved bolt hole at the docking point of the two bases to achieve docking of the two bases). The upper surface of the lower extension platform 13 also integrally protrudes to form a boss 9. Correspondingly, the lower surface of the lower extension platform 13 has a recess 10 that matches the size of the boss 9 on the adjacent concrete base 1. The boss 9 has a height of 40mm, an upper bottom width of 100mm, and a lower bottom width of 150mm. The other end has a corresponding recess 10 that matches the boss 9. The recess 10 has a depth of 35mm, and the gap between the boss and the recess 9 is 10mm. The above dimensions are one embodiment, and can be adjusted appropriately according to the environment. When multiple sets of bases need to be spliced ​​to form a guardrail base, firstly, the protrusion 9 of the lower extension platform 13 of the previous set of bases is embedded into the concave platform 10 at the bottom of the lower extension platform 13 of the next set of bases. The cooperation of the concave and convex structures enables the quick alignment of adjacent bases and avoids splicing misalignment. Then, the second anchor bolt 8 of the lower extension platform 13 of the previous set of bases is inserted into the second anchor hole 11 of the upper extension platform 12 of the next set of bases, and the nut is tightened to complete the fixation. Multiple sets of bases are spliced ​​in this way to form a base of the required length. The entire process does not require drilling, planting bars or other anchoring operations on the ground. Stable placement is achieved solely by the weight of the base itself and the overall structure after splicing.

[0019] The column 2 is made of high-strength steel, and its cross-sectional dimensions match the insertion holes 14 on the concrete base 1. During installation, the column 2 is inserted into the insertion holes 14 of each base, with the insertion depth such that the bottom of the column 2 is flush with the bottom wall of the insertion hole 14. Then, the first anchor bolt 5 passes through the pre-set bolt hole at the bottom of the column 2 through the side wall of the concrete base 1. After tightening the first anchor bolt 5, the column 2 is firmly connected to the base, preventing the column 2 from tilting or being pulled out when subjected to lateral impact. The column 2 can be made of Q235 steel with a cross-sectional dimension of 140mm × 4.5mm × 850mm (outer diameter × wall thickness × height). The column 2 has an installation hole at the bolt connection position of the concrete base 1, 200mm from the bottom, for cooperating with the first anchor bolt 5 of the concrete base 1 to achieve the connection and fixation between the column 2 and the concrete base 1.

[0020] The diaphragm beam 3 is also made of steel and is horizontally arranged, symmetrically distributed on the left and right sides of each set of columns 2. The end of the diaphragm beam 3 has mounting holes corresponding to the bolt holes on the side wall of the column 2. The first connecting bolt 6 passes through the mounting holes and is fastened to the column 2, so that the diaphragm beam 3 and the column 2 form a vertical and stable lateral support structure, providing a reliable carrier for the installation of the second wave plate 4. The diaphragm beam 3 can be made of Q235 steel, with an overall size of 480mm×200mm×50mm (length×height×width) and a thickness of 4.5mm. The diaphragm beam 3 has two holes with a diameter of 22mm for connecting to the column 2 through the first connecting bolt 6. At the connection position with the second wave plate 4, there is a 2-20×30 (length×width) hole for cooperating with the second connecting bolt 7 to achieve connection with the second wave plate 4.

[0021] The second-wave plate 4 is made of corrugated steel, and its curvature matches that of conventional road guardrails. It is symmetrically arranged on both the front and rear sides of the transverse beam 3. The edges of the second-wave plate 4 are flush with the surface of the transverse beam 3. Simultaneously, at the corresponding positions of each set of posts 2, the pre-set connecting holes on the second-wave plate 4 align with the corresponding bolt holes on the posts 2. The second-wave plate 4 is then locked and fixed to the posts 2 using the second connecting bolts 7. This dual fixing method (fluid flush with the transverse beam 3 for load bearing, and bolted connection to the posts 2) allows the second-wave plate 4 to evenly distribute force when impacted by a vehicle, preventing localized deformation or detachment. The second-wave plate 4... Q235 corrugated steel plate can be selected, which meets the specifications of DB1 type double-wave plate 4 in "Corrugated Beam Steel Guardrail" (GB / T31439.1-2015). Its effective length is 4320mm, wave height is 85mm, wave pitch is 310mm, and plate thickness is 4mm. The double-wave plate 4 has a pre-set connecting part along the edge of the length direction, and 20mm×30mm bolt holes are opened at the connection position of the crossbeam 3. The second connecting bolt 7 is used to achieve a detachable connection with the crossbeam 3. The hole spacing is adapted to the connection node of the crossbeam 3 to meet the installation accuracy requirements specified in the standard.

[0022] It should be noted that the first anchor bolt 5, the second anchor bolt 8, the first connecting bolt 6, and the second connecting bolt 7 are all high-strength bolts. For example, if grade 8.8 high-strength bolts are used, spring washers and flat washers are used to prevent loosening. The first anchor bolt 5 has a size of M20×360mm; the second anchor bolt 8 has a size of M27×320; the first connecting bolt 6 has a size of M16×180mm; and the second connecting bolt 7 has a size of M16×50mm. This ensures the shear and tensile strength of the connection nodes of each component, and together with the C30 concrete base 1 and the steel structure columns 2, transverse beams 3, and double-wave plates 4, forms a stable steel-concrete composite structure.

[0023] The entire guardrail assembly process can be completed quickly in the order of "base splicing - column 2 fixing - crossbeam 3 installation - double wave plate 4 assembly". When disassembling, you only need to loosen each bolt in sequence to disassemble the parts, which is convenient for movement and reuse. Its anchor-free design avoids damage to the road foundation, and the reliable connection structure ensures the protective performance, perfectly adapting to the diverse needs of temporary traffic control, road construction protection and other scenarios.

[0024] In this embodiment, the assembly steps of the guardrail are as follows: Step 1: Base alignment and connection Place the first concrete base 1 flat on the road surface to be installed (the road surface must be flat and no drilling pretreatment is required). Then take the second base and align its concave platform 10 with the protrusion 9 of the first base. Slowly push it in along the guide of the protrusion 9 until the end faces of the two bases fit together (quick alignment is achieved through the cooperation of the concave and protrusion 9). Next, insert the second anchor bolt 8 into the reserved bolt hole at the joint of the two bases and tighten it with a torque wrench (tightening torque is 80-100 N·m) to make the adjacent bases form a stable whole. Repeat the above operation to complete the assembly of multiple bases according to the protection length.

[0025] Step 2: Fixing column 2 to the base Place the column 2 at the pre-set bolt holes of the concrete base 1, aligning the mounting hole of the column 2 200mm from the bottom with the bolt hole of the base; insert the first anchor bolt 5, then put in the flat washer and spring washer in sequence, and tighten the nut (tightening torque is 90-110N·m) to ensure that the column 2 is perpendicular to the base (verticality deviation ≤1°).

[0026] Step 3: Connection between the transverse diaphragm beam 3 and the column 2 Align the 22mm diameter hole on the crossbeam 3 with the corresponding hole on the column 2, insert the first connecting bolt 6 and tighten it (tightening torque is 70-90 N·m). Install two first connecting bolts 6 at each connection point to achieve horizontal fixation of the crossbeam 3; each column 2 is connected to two crossbeams 3.

[0027] Step 4: Assembly of the second wave plate 4 and the transverse diaphragm beam 3 Place the mounting ears of the second wave plate 4 against the side of the crossbeam 3, aligning the mounting ear bolt holes with the through holes of the crossbeam 3; insert the second connecting bolt 7 and tighten it (tightening torque is 60-80 N·m); connect each section of the second wave plate 4 to form a whole according to the specifications.

[0028] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that modifications may be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A movable steel-concrete guardrail without anchorage, characterized in that: Includes concrete base (1), column (2), crossbeam (3) and double wave plate (4), multiple sets of concrete base (1) can be spliced ​​to form the guardrail base of the required length; Each concrete base (1) is provided with a plug hole (14) for inserting the column (2). After the column (2) is inserted into the plug hole (14), it is connected to the column (2) by the first anchor bolt (5) to form a fixed connection. The crossbeam (3) is correspondingly set on each column (2) and is fixedly connected to the column (2) by the first connecting bolt (6). The double wave plate (4) is fixed to the column (2) by the crossbeam (3) and is connected to the second connecting bolt (7) at each column (2).

2. The anchor-free movable steel-concrete guardrail according to claim 1, characterized in that: The concrete base (1) has an upper extension platform (12) at one end of its length and a lower extension platform (13) at the other end of its length. The lower extension platform (13) has a second anchor bolt (8) at its top and the upper extension platform (12) has a second anchor hole (11) for insertion into the second anchor bolt (8) on the adjacent concrete base (1).

3. The anchor-free movable reinforced concrete guardrail according to claim 2, characterized in that: The lower extension platform (13) is provided with a boss (9) at the top, and the upper extension platform (12) is provided with a concave platform (10) at the bottom for the boss (9) on the adjacent concrete base (1) to match. The boss and the concave platform (10) cooperate with each other to achieve rapid alignment of the adjacent concrete base (1).

4. The anchor-free movable reinforced concrete guardrail according to claim 1, characterized in that: A transverse beam (3) is symmetrically arranged on both sides of each column (2), and the two-wave plate (4) is symmetrically arranged on the front and back sides of the transverse beam (3).

5. The anchor-free movable steel-concrete guardrail according to claim 1, characterized in that: The concrete base (1) is made of C30 concrete.

6. The anchor-free movable reinforced concrete guardrail according to claim 1, characterized in that: The columns (2), crossbeams (3) and double-wave plates (4) are made of steel.

7. The anchor-free movable reinforced concrete guardrail according to claim 1, characterized in that: The first anchor bolt (5), the second anchor bolt (8), the first connecting bolt (6) and the second connecting bolt (7) are all high-strength bolts.

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