Pedestrian and vehicle diversion guardrail based on large-diameter shield fully-prefabricated box culvert

Abstract

The utility model provides a man-vehicle diversion guardrail based on a large-diameter shield fully-prefabricated box culvert, which solves the problems of complex installation, high maintenance cost and insufficient safety of the traditional isolation facility, and comprises a plurality of guardrail bases, guardrail upright posts and guardrail cross beams, the plurality of guardrail bases are distributed along the front-back extension direction of a shield tunnel, and the guardrail upright posts are distributed on the guardrail cross beams. Each guardrail base comprises a transverse base plate, connecting plates extending downwards in an inclined mode are arranged at the left end and the right end of each transverse base plate, the whole guardrail base is of a trapezoidal structure, mounting holes are formed in the connecting plates, and the two connecting plates are connected with box culvert bolt holes formed in the mode that two adjacent box culverts are assembled through arc-shaped bolts. The bottoms of the guardrail stand columns are fixedly connected with the transverse base plate of the guardrail base through bolt assemblies, hole inserting grooves allowing the ends of the guardrail cross beams to be inserted are formed in the left sides and the right sides of the guardrail stand columns, and the two ends of each guardrail cross beam are assembled and connected with the hole inserting grooves of the two adjacent guardrail stand columns respectively.

Description

TECHNICAL FIELD

[0001] The utility model relates to large diameter shield tunneling infrastructure field, concretely relates to a person vehicle shunting guardrail for large diameter shield full prefabricated box culvert. BACKGROUND

[0002] With the rapid development of urban traffic, shield method construction tunnel is widely used in the construction of underground passage because of its small influence on ground traffic and surrounding environment. In the process of assembling segments, full prefabricated box culvert needs to be assembled in the shield tunnel, and the top surface of the assembled box culvert forms a channel for people and vehicles to pass through. However, in the closed and limited space environment of the tunnel, factors such as insufficient lighting and mixed driving of people and vehicles frequently lead to safety accidents, seriously threatening the safety of tunnel engineering.

[0003] Therefore, it is necessary to install isolation facilities in the tunnel. However, traditional tunnel isolation facilities are mostly temporary or semi-permanent structures, which have the problems of complex installation, high maintenance cost, insufficient safety, and difficulty in meeting the requirements of rapid deployment and adjustment. Therefore, it is extremely important to develop a new type of person-vehicle shunting guardrail based on large diameter shield. SUMMARY

[0004] The utility model provides a kind of person-vehicle shunting guardrail based on large diameter shield full prefabricated box culvert, solve the problem that traditional isolation facilities are complex to install, high maintenance cost, insufficient safety, to effectively realize person-vehicle shunting, significantly improve road safety and traffic efficiency.

[0005] The utility model is realized by the following technical solutions:

[0006] A kind of person-vehicle shunting guardrail based on large diameter shield full prefabricated box culvert, including multiple guardrail pedestals, guardrail uprights and guardrail cross beams, multiple guardrail pedestals are distributed along the front and rear extension direction of shield tunnel, each guardrail pedestal includes transverse base plate, the left and right ends of the transverse base plate are provided with connection plate extending downward, the guardrail pedestal is trapezoidal structure as a whole, installation hole is provided on the connection plate, two connection plates are connected by arc bolt respectively with the box culvert bolt hole of adjacent two box culverts assembled;

[0007] The bottom of the guardrail upright is fixedly connected with the transverse base plate of the guardrail pedestal by bolt assembly, the left and right sides of the guardrail upright are provided with hole insertion slot allowing the end of the guardrail cross beam to be inserted, and the two ends of the guardrail cross beam are respectively assembled and connected with the hole insertion slot of the adjacent two guardrail uprights.

[0008] Further, the end of the guardrail cross beam is connected by cross beam fixing bolt after extending into the hole insertion slot of the guardrail upright.

[0009] Further, the top ends of the adjacent guardrail posts are connected into one body by the top rod.

[0010] Further, the distance between the two adjacent guardrail posts is the sum of the lengths of the two box culverts.

[0011] Further, the guardrail base, the guardrail post and the guardrail beam are all made of steel prefabricated parts.

[0012] The utility model discloses compared with prior art has the beneficial effects as follows:

[0013] 1. The utility model discloses a people and vehicle shunting protection facility based on large diameter shield full prefabricated box culvert, including a plurality of guardrail base, guardrail post and guardrail beam, and the two connecting plates of guardrail base are connected through arc bolt with the box culvert bolt hole of the assembly of two adjacent box culverts, and the guardrail post is stably installed on the guardrail base through bolt, and after the installation of two side guardrail posts is completed, the guardrail beam will be inserted into the hole slot of the both sides of guardrail post.

[0014] The whole structure design is reasonable, and the installation and disassembly process is simple, safe and efficient, thereby effectively realizing people and vehicle shunting, and significantly improving road safety and traffic efficiency.

[0015] 2, the guardrail base, the guardrail post and the guardrail beam adopt prefabricated components, improve construction precision, and ensure the overall stability and safety of the guardrail.

[0016] 3, the design incorporates the hole slot structure of beam fixing bolt, optimizes the disassembly and maintenance process of guardrail, improves its operation convenience, significantly improves the convenience and efficiency of the installation process of guardrail, and greatly shortens the construction period. DRAWINGS

[0017] Figure 1 It is the people and vehicle shunting guardrail schematic diagram based on large diameter shield full prefabricated box culvert.

[0018] Figure 2 It is the guardrail base schematic diagram.

[0019] Figure 3 It is the guardrail post schematic diagram.

[0020] Figure 4 It is the guardrail base installation schematic diagram.

[0021] Figure 5 It is the people and vehicle shunting guardrail use state schematic diagram.

[0022] In the diagram: 1. Guardrail base, 11. Horizontal base plate, 12. Connecting plate, 13. Mounting hole, 2. Guardrail post, 3. Guardrail beam, 4. Box culvert bolt hole, 5. Arc bolt, 6. Top rod, 7. Hole slot, 8. Rear crossbeam fixing bolt. Detailed Implementation

[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0024] In the description of the utility model, it should be understood that the terms "front", "rear", "up", "down", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the 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. Therefore, they should not be construed as limitations on the utility model.

[0025] To achieve pedestrian and vehicle separation in the box culvert passage of a shield tunnel, this embodiment discloses a pedestrian and vehicle separation guardrail based on a large-diameter, fully prefabricated shield box culvert, such as... Figures 1-3 As shown, the system mainly includes multiple guardrail bases 1, guardrail posts 2, and guardrail beams 3. All guardrail bases 1, posts 2, and beams 3 are made of precast steel components. Multiple guardrail bases 1 are distributed along the front-to-back extension direction of the shield tunnel. Each guardrail base 1 includes a transverse base plate 11, with connecting plates 12 extending downwards and outwards at both ends of the transverse base plate 11, thus forming a trapezoidal structure. Mounting holes 13 are pre-drilled on the connecting plates 12. As is well known, during the assembly of fully precast box culverts, box culvert bolt holes 4 are pre-drilled on the top surface of the box culvert near the assembly joints. Adjacent box culverts are connected by arc-shaped bolts 5 that mate with the box culvert bolt holes 4. To facilitate the fixing of the pedestrian and vehicle separation guardrail described in this embodiment, the two connecting plates 12 of the guardrail base 1 are connected to the bolt holes 4 of the box culverts that are assembled with the adjacent box culverts by means of arc bolts 5. This not only makes it convenient and quick to fix the guardrail base 1, but also avoids re-drilling holes on the top surface of the box culvert, greatly reducing the complexity of operation.

[0026] The bottom of the guardrail post 2 is fixedly connected with the transverse base plate 11 of the guardrail base 1 through a bolt assembly, and the left and right sides of the guardrail post 2 are processed with hole insertion slots 7 allowing the end portions of the cross beams to be inserted. The two end portions of the guardrail cross beam 3 are respectively inserted into the hole insertion slots 7 of the adjacent two guardrail posts 2 and then connected through cross beam fixing bolts 8. In order to further strengthen the stability of the people-vehicle separation guardrail, the top ends of the adjacent guardrail posts 2 are connected into one through a top rod 6 and a bolt assembly.

[0027] The specific installation process of the people-vehicle separation guardrail based on the large-diameter shield full-precast box culvert according to the embodiment is as follows:

[0028] As shown in Figures 4-5 In the embodiment, the distance between the adjacent two guardrail posts 2 is the length distance of the two box culverts, and the two connecting plates 12 of the guardrail base 1 are connected with the box culvert bolt holes 4 of the two adjacent box culverts through arc-shaped bolts 5 after the two connecting plates 12 are assembled with the two adjacent box culverts. After the guardrail base 1 is fixed, the guardrail posts 2 are stably installed on the guardrail base 1 through bolts, and after the installation of the two guardrail posts 2 is completed, the guardrail cross beam 3 is inserted into the hole insertion slots on the two sides of the guardrail post 2 and is fastened and connected through the cross beam fixing bolts. The overall structure design is reasonable, the installation and disassembly process is simple, the safety performance is high, and the efficiency is remarkable, so that the people-vehicle separation is effectively realized, and the road safety and the traffic efficiency are significantly improved.

Claims

1. A people-car separation guard based on a large-diameter shield full-precast box culvert, characterized in that, The application relates to a fence structure for a shield tunnel, which comprises a plurality of fence bases, fence columns and fence beams, the plurality of fence bases are distributed along the front-rear extension direction of the shield tunnel, each fence base comprises a transverse base plate, the left and right ends of the transverse base plate are provided with connecting plates extending downward in an oblique direction, the whole fence base is in a trapezoidal structure, mounting holes are arranged on the connecting plates, and the box culvert bolt holes of two box culverts assembled with adjacent two box culverts are connected through arc-shaped bolts. The bottom of the fence column is fixedly connected with the transverse base plate of the fence base through a bolt assembly, the left and right sides of the fence column are provided with hole insertion slots allowing the end portions of the fence beams to be inserted, and the two end portions of the fence beam are assembled and connected with the hole insertion slots of the adjacent two fence columns.

2. The people-car separation fence based on large-diameter shield full-precast box culvert according to claim 1, characterized in that, The end portion of the fence beam is connected through a beam fixing bolt after being inserted into the hole insertion slot of the fence column.

3. The people-car separation fence based on large-diameter shield full-precast box culvert according to claim 1, characterized in that, The top ends of the adjacent fence columns are connected into a whole through a top rod.

4. The people and vehicle separated guardrail based on the large-diameter shield full-precast box culvert according to claim 1, characterized in that, The interval between the adjacent two fence columns is the sum of the lengths of the two box culverts.

5. The people-vehicle separation fence based on large-diameter shield full-precast box culvert according to any one of claims 1-4, characterized in that, The fence base, the fence column and the fence beam are all made of steel prefabricated parts.

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