Permanent and temporary combined anchoring-free guardrail for road reconstruction and extension

Abstract

The utility model discloses a highway reconstruction and expansion permanent and temporary combined anchoring-free guardrail, which comprises a guardrail, an upright post and a concrete base, a plurality of preformed holes are arranged on the concrete base, the bottom of the upright post is fixed in the preformed holes, the guardrail is connected with the upright post, and a water through groove is arranged on the bottom surface of the concrete base. According to the overall design, the two wave-shaped beam plates and the concrete base can be connected in series according to the required length, and vehicles running in opposite directions can be effectively isolated, prevented from collision and guided; the device is convenient to move and can be repeatedly used; after the two wave-shaped beam plates and the anti-blocking blocks are dismantled, a new concrete structure can be additionally arranged on the concrete base to form the F-shaped concrete guardrail.

Description

Technical Field

[0001] The utility model relates to the field of highway guardrails, in particular to an anchor-free guardrail for highway reconstruction and expansion that combines permanent and temporary functions. Background Art

[0002] The necessary temporary safety, service and management facilities should be set up during the reconstruction and expansion of expressways. Temporary traffic projects and facilities along the route should take into account the versatility and reusability of the facilities and should be easy to dismantle and move.

[0003] According to Chapter 9 of the "Design Specifications for Highway Reconstruction and Expansion Traffic Engineering and Facilities Alongside" (JTG / T L80-2014), when maintaining a speed of 60 km / h or above on a traffic section, temporary isolation facilities should include continuously interlocking precast concrete guardrail blocks, continuously interlocking water barriers filled with water (or sand), and corrugated beam guardrails. However, in practice, concrete guardrails are difficult to move, water barriers provide insufficient protection, and corrugated beam guardrails are not mobile.

[0004] At present, some mobile steel guardrail products with anti-collision grade reaching level three (A) have been used to renovate and expand temporary guardrails. However, after the renovation and expansion construction is completed, the mobile steel guardrails can no longer be used in large quantities on the highway, resulting in great waste. Utility Model Content

[0005] The purpose of this utility model is to address the above-mentioned problems existing in the existing technology and provide a permanent and temporary anchor-free guardrail for highway reconstruction and expansion. It is used to solve the problems that temporary isolation and protection facilities in existing reconstruction and expansion construction are insufficient in protection capacity, difficult to move, and temporary guardrails cannot be used on the highway after reconstruction and expansion.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] An anchor-free guardrail for highway reconstruction and expansion, which is a combination of permanent and temporary, includes a guardrail, a column and a concrete base. The concrete base is provided with multiple reserved holes, the bottom of the column is fixed in the reserved holes, the guardrail and the column are connected, and a water trough is provided on the bottom surface of the concrete base.

[0008] The roadbed below the gutter is laid with concrete as described above.

[0009] As described above, the guardrails are arranged in sequence in a plurality, and adjacent guardrails are connected to each other; the concrete bases are arranged in sequence in a plurality, and adjacent concrete bases are connected to each other.

[0010] As mentioned above, the two sides of the concrete base are climbing sills and collision surfaces from top to bottom.

[0011] The top of the concrete base is vertically embedded with a clamping groove piece at two ends, the top end of the clamping groove piece is open, the inside of the clamping groove piece is hollow, the side of the clamping groove piece is flush with the end face of the concrete base and is provided with a vertical slot, and the two wings of the I-shaped connecting piece are vertically inserted into the clamping groove pieces at the end of the adjacent concrete base respectively, and the two sides of the connecting plate between the two wings are inserted into the vertical slots of the clamping groove pieces at the end of the adjacent concrete base respectively.

[0012] The guardrail is a two-wave beam plate, the threaded end of the fixing bolt is sequentially threaded into the two-wave beam plate and the blocking block and is screwed into the threaded hole pre-buried in the column, the side of the blocking block in contact with the column is an arc surface, and the arc surface is matched with the shape of the column.

[0013] The guardrail is an F-shaped concrete guardrail upper structure, a cylindrical through hole penetrating the top face and the bottom face is reserved on the F-shaped concrete guardrail upper structure, the column is inserted into the cylindrical through hole, the bottom face of the F-shaped concrete guardrail upper structure is arranged on the top face of the concrete base, cement mortar or epoxy resin is filled between the column and the inner wall of the cylindrical through hole, and the bottom face of the F-shaped concrete guardrail upper structure and the top face of the concrete base are connected through the cement mortar.

[0014] The top of the F-shaped concrete guardrail upper structure is vertically embedded with a clamping groove piece at two ends, the top end of the clamping groove piece is open, the inside of the clamping groove piece is hollow, the side of the clamping groove piece is flush with the end face of the F-shaped concrete guardrail upper structure and is provided with a vertical slot, the two wings of the I-shaped connecting piece are vertically inserted into the clamping groove pieces at the end of the adjacent F-shaped concrete guardrail upper structure respectively, and the two sides of the connecting plate between the two wings are inserted into the vertical slots of the clamping groove pieces at the end of the adjacent F-shaped concrete guardrail upper structure respectively.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The utility model discloses whole's design can be connected in series according to need length, can effectively isolate and protect to the vehicle of opposite direction, and the anti -collision ability is higher;Two wave beam plates can be combined and spliced with the existing high -speed old wave beam parts, are convenient for dismantling and moving, have universality and reusability;After the reconstruction construction is completed, can utilize the concrete base combination in the highway central separation zone, and combine into the F-shaped concrete guardrail, reduce the waste of temporary facilities. ACCURACY OF DRAWINGS

[0017] Figure 1 It is the structure schematic drawing that the utility model is used as the temporary anchor-free guardrail;

[0018] Figure 2 It is the explosion drawing that the utility model is used as the temporary anchor-free guardrail;

[0019] Figure 3This is a schematic diagram of the installation of the slot parts and the I-shaped connector;

[0020] Figure 4 This is a structural conversion diagram of the utility model used as a temporary anchor-free guardrail to be converted into a permanent anchor-free guardrail;

[0021] Figure 5 This is a structural diagram of a double-row permanent anchor-free guardrail;

[0022] Figure 6 This is an exploded diagram of a double row of permanent anchor-free guardrails;

[0023] Figure 7 This is a structural diagram of a single-row permanent anchor-free guardrail.

[0024] In the figure: 1. Two-corrugated beam plate; 2. Anti-obstruction block; 3. Column; 4. Reserved hole; 5. Slot; 6. I-shaped connector; 7. Climbing step; 8. Collision surface; 9. Water trough; 10. F-type concrete guardrail upper structure; 11. Concrete base; 12. Surface layer; 13. Base layer; 14. Sleeper beam; 15. Support block. DETAILED DESCRIPTION

[0025] To facilitate those skilled in the art to understand and use the present invention, the present invention is further described in detail below in conjunction with embodiments. It should be understood that the implementation examples described herein are only used to illustrate and explain the present invention and are not used to limit the present invention.

[0026] Example 1

[0027] like Figure 1 As shown, a permanent and temporary anchor-free guardrail for highway reconstruction and expansion includes a guardrail, a column 3, and a concrete base 11; the guardrail and the column 3 are fixedly connected, and the bottom of the column 3 is inserted into the reserved hole 4 of the concrete base 11 and fixed. As a preferred fixing method, cement mortar is poured into the reserved hole 4 to firmly connect the bottom of the column 3 to the reserved hole 4.

[0028] As a preferred solution, multiple guardrails are arranged in sequence, with adjacent guardrails connected. Multiple concrete bases 11 are arranged in sequence, with adjacent concrete bases 11 connected. The guardrails and concrete bases 11 can be connected in series to form a whole according to the required length and placed in the center of the lane of the renovated and expanded road to separate oncoming traffic.

[0029] The concrete base does not need to be anchored and can be placed directly on a flat road surface. Its own weight ensures the overall stability of the guardrail while avoiding damage to the roadbed and pavement. It can be moved relatively quickly at traffic transfer nodes.

[0030] As a preferred solution, the concrete base 11 is elongated, and a plurality of reserved holes 4 are sequentially arranged on the top of the concrete base 11 along the length direction. From top to bottom, the two sides of the concrete base 11 are respectively provided with a climbing step 7 and a collision surface 8. The angle formed by the climbing step 7 and the horizontal plane is 50-60 degrees, preferably 55 degrees. The collision surface 8 is a vertical surface. Such a collision surface allows the front of the vehicle to be lifted to a certain height before hitting the corrugated beam guardrail when the vehicle collides, thereby reducing a certain amount of collision energy.

[0031] As a preferred solution, a water trough 9 is provided on the bottom surface of the concrete base 11. The water trough 9 is similar to an inverted trough body. When the utility model is used in the central dividing strip of a highway, the highways on both sides of the utility model can be drained through the water trough 9. Furthermore, concrete can be filled at the bottom of the water trough 9 so that the concrete covers the roadbed below the water trough 9, thereby ensuring drainage of the central dividing strip while preventing water from directly seeping into the roadbed.

[0032] As a preferred embodiment, a slot member 5 is vertically embedded in the top of each end of the concrete base 11. The slot member 5 has an open top and a hollow interior. One side of the slot member 5 is flush with the end surface of the concrete base 11 and has a vertical seam. The two wings of the I-shaped connector 6 are vertically inserted into the slot members 5 at the ends of the adjacent concrete base 11, and the two sides of the connecting plate between the two wings are inserted into the vertical seams of the slot members 5 at the ends of the adjacent concrete base 11. The slot members 5 connect the ends of the adjacent concrete bases 11. Furthermore, the cross-sectional shape of the hollow portion of the slot member 5 matches the cross-sectional shape of the wings of the I-shaped connector 6, facilitating the insertion of the wings of the I-shaped connector 6 into the hollow portion of the slot member 5. Furthermore, an inverted U-shaped handle is provided on the top of the I-shaped connector 6 to facilitate manual lifting and removal of the I-shaped connector 6, facilitating the connection and disconnection of the concrete bases 11.

[0033] When the present invention is used as a temporary anchor-free guardrail, the guardrail is composed of two corrugated beams 1, which are connected to the columns 3 through the anti-blocking blocks 2. As a preferred solution, the side of the anti-blocking blocks 2 in contact with the columns 3 is adapted to the shape of the columns 3, that is, the side of the anti-blocking blocks 2 in contact with the columns 3 is an arc surface, and the arc surface is adapted to the shape of the columns 3 for better fixation. The threaded ends of the fixing bolts pass through the two corrugated beams 1 and the anti-blocking blocks 2 in sequence and are tightened into the pre-buried threaded holes on the columns 3. Each row of concrete bases 11 corresponds to two rows of two corrugated beams 1, and the columns 3 are located between the two rows of two corrugated beams 1. The adjacent two corrugated beams 1 in each row of two corrugated beams 1 are connected and fixed by splicing bolts. The material of the corrugated beam guardrail is relatively common on existing old highways, which is convenient for reuse and saves construction costs.

[0034] When the utility model is used as a concrete guardrail on a highway, the guardrail is an F-type concrete guardrail upper structure 10, and a cylindrical through hole penetrating the top and bottom surfaces is reserved on the F-type concrete guardrail upper structure 10. The column 3 is inserted into the cylindrical through hole. The bottom surface of the F-type concrete guardrail upper structure 10 is set on the top surface of the concrete base 11. The concrete base 11 serves as the lower structure of the F-type concrete guardrail. Mortar or epoxy resin is filled between the column 3 and the inner wall of the cylindrical through hole. Preferably, the bottom surface of the F-type concrete guardrail upper structure 10 and the top surface of the concrete base 11 are connected by cement mortar to prevent water infiltration.

[0035] As a preferred solution, a slot member 5 is vertically embedded in the top of both ends of the F-type concrete guardrail superstructure 10. The top of the slot member 5 is open, and the interior of the slot member 5 is hollow. One side of the slot member 5 is flush with the end face of the F-type concrete guardrail superstructure 10 and is provided with a vertical seam. The two wing plates of the I-shaped connector 6 are respectively vertically inserted into the slot members 5 at the ends of the adjacent F-type concrete guardrail superstructure 10, and the two sides of the connecting plate between the two wing plates are respectively inserted into the vertical seams of the slot members 5 at the ends of the adjacent F-type concrete guardrail superstructure 10. Furthermore, an inverted U-shaped handle is provided on the top of the I-shaped connector 6 to facilitate manual lifting and removal of the I-shaped connector 6, thereby facilitating the connection and separation of the F-type concrete guardrail superstructures 10.

[0036] As a preferred solution, Figure 5-6 As shown, there are two rows of concrete bases 11, and support blocks are provided between the bottom of the inner side collision surfaces 8 of the two rows of concrete bases 11. The support blocks are used to limit the two rows of concrete bases 11 to prevent the two rows of concrete bases 11 from moving relative to each other. The support blocks and the two rows of concrete bases 11 are all provided on the bolster, and the bolster is flush with the base layer. The base layer on both sides of the bolster is paved with a surface layer, and the surface layer is paved to the bottom of the outer side collision surface 8 of the two rows of concrete bases 11.

[0037] As another preferred solution, Figure 7 As shown, the concrete base 11 is in a single row. The concrete base 11 is set on the bolster, and the bolster is flush with the base. The base on both sides of the bolster is paved with a surface layer, and the surface layer is paved to the bottom of the collision surface 8 on both sides of the concrete base 11.

[0038] Example 2:

[0039] A method for constructing a permanent and temporary highway reconstruction and expansion guardrail according to embodiment 1 includes the following steps:

[0040] Construction steps of temporary anchor-free guardrail:

[0041] Step 1.1, laying concrete bases 11 on the ground, connecting adjacent concrete bases 11 through the clamping groove piece 5 and the I-shaped connecting piece 6;

[0042] Step 1.2, inserting the corresponding column 3 into each reserved hole 4 on the concrete base 11, and pouring cement mortar into the gap between the reserved hole 4 and the bottom of the column 3 and waiting for a certain time to solidify, realizing the installation of the concrete base 11 and the column 3;

[0043] Step 1.3, placing the anti-blocking block 2 between the two-wave beam slab 1 and the column 3, the threaded end of the fixing bolt penetrates the two-wave beam slab 1 and the anti-blocking block 2 in turn and is tightened into the threaded hole pre-buried in the column 3, and the adjacent two-wave beam slabs 1 are connected and fixed through splicing bolts, realizing the installation of the two-wave beam slab 1;

[0044] Permanent anchor-free guardrail reconstruction construction steps:

[0045] Step 2.1: remove the connection between the two-wave beam slab 1, the anti-blocking block 2 and the column 3, pull out the I-shaped connecting piece 6 used to connect the concrete base 11, and hoist the concrete base 11 to the newly built highway central median strip, and then connect the adjacent connecting concrete bases 11 through the I-shaped connecting piece 6;

[0046] Step 2.2: hoist the F-shaped concrete guardrail superstructure 10 to the concrete base 11, insert the column 3 into the reserved cylindrical through hole of the F-shaped concrete guardrail superstructure 10, and use cement mortar to fill the gap between the F-shaped concrete guardrail superstructure 10 and the concrete base 11;

[0047] Step 2.3: connect the adjacent F-shaped concrete guardrail superstructures 10 through the I-shaped connecting piece 6;

[0048] Step 2.4: fill the gap between the adjacent F-shaped concrete guardrail superstructures 10 and the gap between the concrete bases 11 with cement mortar to prevent water from seeping in;

[0049] Step 2.5: inject mortar or epoxy resin from the top of the cylindrical through hole into the cylindrical through hole, fill the entire cylindrical through hole and wait for solidification, and firmly connect the F-shaped concrete guardrail superstructure 10 and the concrete base 11.

[0050] Finally, a central median strip separated concrete guardrail is formed as shown in Figure 6 The anti-collision capacity can reach five (SA) levels.

[0051] As another embodiment, if the cast-in-place process of the F-type concrete guardrail upper structure 10 is adopted, the structural steel bars of the F-type concrete guardrail upper structure 10 can be welded to the columns to strengthen the connection between the F-type concrete guardrail upper structure 10 and the concrete base. The longitudinal length of the cast-in-place F-type concrete guardrail upper structure 10 is determined according to the requirements of the transverse expansion joint, and the longitudinal connection adopts reserved steel casing and steel bar connection.

[0052] like Figure 7 As shown, after the upper structure 10 and the concrete base 11 of the F-type concrete guardrail are firmly connected, it can also be used as an integral concrete guardrail, and the anti-collision capability can reach level five (SA).

[0053] It should be noted that the embodiments described in this utility model are merely illustrative of the spirit of this utility model. Those skilled in the art of the technology to which this utility model relates may make various modifications, additions, or substitute similar methods to the described embodiments without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A permanent and temporary anchor-free guardrail for highway reconstruction and expansion, comprising a guardrail, characterized in that: The utility model also includes a column (3) and a concrete base (11), wherein a plurality of reserved holes (4) are provided on the concrete base (11), the bottom of the column (3) is fixed in the reserved hole (4), the guardrail and the column (3) are connected, and a water trough (9) is provided on the bottom surface of the concrete base (11), and a slot member (5) is vertically buried at the top of both ends of the concrete base (11), the top of the slot member (5) is open, the inside of the slot member (5) is hollow, one side of the slot member (5) is flush with the end surface of the concrete base (11) and a vertical seam is provided, and the two wing plates of the I-shaped connecting member (6) are respectively vertically inserted into the slot member (5) at the end of the adjacent concrete base (11), and the two sides of the connecting plate between the two wing plates are respectively inserted into the vertical seams of the slot member (5) at the end of the adjacent concrete base (11).

2. The anchor-free guardrail for highway reconstruction and expansion combined with permanent and temporary installations according to claim 1 is characterized in that: The roadbed below the water channel (9) is paved with concrete.

3. The anchor-free guardrail for highway reconstruction and expansion combined with permanent and temporary installations according to claim 1 is characterized in that: The guardrails are arranged in sequence in a plurality of pieces, and adjacent guardrails are connected to each other. The concrete bases (11) are arranged in sequence in a plurality of pieces, and adjacent concrete bases (11) are connected to each other.

4. The anchor-free guardrail for highway reconstruction and expansion combined with permanent and temporary installations according to claim 1 is characterized in that: The two sides of the concrete base (11) are, from top to bottom, a climbing ridge (7) and a collision surface (8).

5. The anchor-free guardrail for highway reconstruction and expansion combined with permanent and temporary use according to claim 1 is characterized in that: The guardrail comprises two corrugated beam plates (1), the threaded ends of the fixing bolts sequentially pass through the two corrugated beam plates (1) and the anti-blocking block (2) and are screwed into pre-buried threaded holes on the columns (3), and the side surface of the anti-blocking block (2) in contact with the column (3) is an arc surface, which is adapted to the shape of the column (3).

6. The anchor-free guardrail for highway reconstruction and expansion combined with permanent and temporary installations according to claim 1 is characterized in that: The guardrail is an F-type concrete guardrail upper structure (10), a cylindrical through hole penetrating the top and bottom surfaces of the F-type concrete guardrail upper structure (10) is reserved, a column (3) is inserted into the cylindrical through hole, the bottom surface of the F-type concrete guardrail upper structure (10) is arranged on the top surface of the concrete base (11), cement mortar or epoxy resin is filled between the column (3) and the inner wall of the cylindrical through hole, and the bottom surface of the F-type concrete guardrail upper structure (10) and the top surface of the concrete base (11) are connected by cement mortar.

7. The anchor-free guardrail for highway reconstruction and expansion combined with permanent and temporary installations according to claim 6 is characterized in that: A slot member (5) is vertically embedded at the top of both ends of the F-shaped concrete guardrail upper structure (10). The top of the slot member (5) is open, and the interior of the slot member (5) is hollow. One side of the slot member (5) is flush with the end surface of the F-shaped concrete guardrail upper structure (10) and is provided with a vertical seam. The two wing plates of the I-shaped connector (6) are respectively vertically inserted into the slot members (5) at the ends of the adjacent F-shaped concrete guardrail upper structure (10), and the two sides of the connecting plate between the two wing plates are respectively inserted into the vertical seams of the slot members (5) at the ends of the adjacent F-shaped concrete guardrail upper structure (10).

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