Fabricated medial strip guardrail

Abstract

The utility model relates to the technical field of expressway medial strip guardrail structure improvement, in particular to an assembly type medial strip guardrail, which adopts building blocks as unit structures, the upper surface of each building block is provided with a convex edge, and the lower surface of each building block is provided with a sliding groove. According to the construction and maintenance method, the building blocks are arranged, then the medial strip guardrail structure is formed in the mode that the multiple building blocks are spliced in a staggered mode, the medial strip guardrail structure is designed in an I shape or an H shape, the construction and maintenance difficulty of the whole medial strip guardrail structure is small, and the construction and maintenance requirements of an expressway can be better met.

Description

Technical Field

[0001] The utility model relates to the technical field of the improvement of the guardrail structure in the central isolation belt of expressways, in particular to an assembled central isolation belt guardrail. Background Technique

[0002] After the expressway is put into use, a central isolation belt guardrail will be set up to reduce the occurrence of traffic accidents. The central isolation belt guardrail should have isolation and protection functions, and it can effectively prevent the accident vehicle from rushing into the oncoming lane and causing secondary accidents.

[0003] With the continuous enhancement of people's safety awareness and the continuous improvement of national standard specifications, higher requirements are put forward for the safety performance and rapid maintenance performance of the central isolation belt guardrail. Therefore, those skilled in the art need a new type of central isolation belt guardrail with a certain protection level, convenient installation and disassembly, good appearance effect and low cost. Content of the Utility Model

[0004] The purpose of the utility model is to solve the above problems and design an assembled central isolation belt guardrail.

[0005] To achieve the above purpose, the technical solution of the utility model is as follows: an assembled central isolation belt guardrail includes several sections of guardrail structures. Adjacent two sections of the guardrail structures are connected by expansion bolts and connecting steel plates. The guardrail structure is a wall structure with a vertical and horizontal cross-section in the shape of "I" or "H". When the vertical and horizontal cross-section of the guardrail structure is in the shape of "I", the guardrail structure is composed of a precast wall. When the vertical and horizontal cross-section of the guardrail structure is in the shape of "H", the guardrail structure is composed of two precast walls connected by a cross plate. The precast wall is formed by laying multiple structure layers layer by layer from bottom to top to form a wall structure. The structure layer is a long strip structure formed by connecting multiple blocks. The blocks in adjacent two structure layers are spliced in a staggered manner.

[0006] The block is a block structure with a vertical and horizontal cross-section in the shape of a trapezoid. The upper surface of the block is provided with a convex rib, and the lower surface of the block is provided with a chute. The convex rib can be inserted into the chute by horizontal sliding to form a detachable connection fit.

[0007] The vertical and horizontal cross-section of the convex rib is in the shape of "Ω", and the vertical and horizontal cross-section of the chute is in the shape of "Ω".

[0008] When the blocks in adjacent two structure layers are spliced in a staggered manner, the adjacent blocks are closely attached.

[0009] Two vertical plates are arranged above the horizontal plate, and the horizontal plate, the two vertical plates and the two prefabricated walls together form a trough-shaped structure.

[0010] The vertical plate is clamped and limited by grooved angle steel, and the lower surface of the horizontal plate is supported by long strip angle steel.

[0011] Support brackets are installed on the surface of the vertical plate, and the support brackets are used to support and install communication pipelines.

[0012] An anti-glare plate installation groove and a prefabricated irrigation port are provided on the upper edge of the vertical plate.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. This application adopts a staggered splicing method of multiple blocks to form the central divider guardrail of the highway. While ensuring the protection capacity of the central divider guardrail, it improves the structural flexibility of the entire central divider guardrail. The staff can quickly dismantle, replace or repair the central divider guardrail during maintenance, which effectively improves the efficiency of maintenance construction and reduces the risks borne by the staff;

[0015] 2. The application has a simple structural design, low manufacturing cost, and low construction difficulty, which can better meet the needs of highway functions and maintenance. More importantly, the application can be constructed using small hoisting equipment, thereby significantly reducing the construction cost;

[0016] 3. The structural design of this application fully considers the needs of communication line layout. Support and hanger brackets are installed on the sides of the vertical plates, and the communication lines under the horizontal plates are hoisted and fixed by using the support and hanger bracket structures, so as to better meet the needs of actual construction and actual use;

[0017] 4. This application sets an anti-glare plate installation groove and a prefabricated irrigation port on the upper edge of the vertical plate to provide structural support for the anti-glare and greening of the guardrail and improve the functionality of the guardrail;

[0018] 5. This application utilizes a support and hanger structure to arrange the communication pipelines below the horizontal plate. Compared with the traditional underground communication pipeline arrangement method, it has the advantages of convenient later maintenance and construction, saving costs and time, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of an assembled central dividing strip guardrail described in Example 1 of the utility model;

[0020] Figure 2 In the embodiment 1 of the utility model, when the vertical transverse cross section of the guardrail structure is an "I" shape Figure 1 Schematic diagram of the structure of the AA surface in the middle;

[0021] Figure 3 When the vertical transverse section of the guardrail structure in Embodiment 1 of the present utility model is in an "H" shape Figure 1 This is a schematic structural view of the A-A plane in it;

[0022] Figure 4 This is the present utility model Figure 3 This is a schematic structural view of the B-B plane (i.e., the vertical longitudinal section of the guardrail structure) in it;

[0023] Figure 5 This is a schematic structural view of the building block described in Embodiment 1 of the present utility model;

[0024] Figure 6 This is a schematic structural view of the building block described in Embodiment 2 of the present utility model;

[0025] Figure 7 This is a schematic structural view of the building block described in Embodiment 3 of the present utility model;

[0026] Figure 8 This is a schematic structural view of the building block described in Embodiment 4 of the present utility model;

[0027] In the figure, 1. building block; 2. convex rib; 3. chute; 4. horizontal plate; 5. vertical plate; 6. grooved angle steel; 7. long strip angle steel; 8. support hanger; 9. communication pipeline; 10. anti-glare plate installation groove; 11. precast irrigation port. Detailed implementation manners

[0028] The following combines the accompanying drawings to specifically describe the embodiments of the present utility model:

[0029] Embodiment 1

[0030] An assembled central divider guardrail, as Figure 1-5 shown, includes several sections of guardrail structures. The several sections of guardrail structures are arranged along the center line of the highway. Adjacent two sections of guardrail structures are connected by expansion bolts and connecting steel plates. As Figure 1 shown, the length of each section of guardrail structure is four meters. The guardrail structure is a wall structure with a vertical transverse section in an "I" shape or an "H" shape. When the vertical transverse section of the guardrail structure is in an "I" shape, the guardrail structure is composed of a precast wall, as Figure 2 shown. When the vertical transverse section of the guardrail structure is in an "H" shape, the guardrail structure is composed of two precast walls connected by a horizontal plate 4, as Figure 3As shown, the prefabricated wall is formed by laying together multiple structural layers layer by layer in order from bottom to top to form a wall structure, the structural layer is a long strip structure formed by connecting multiple building blocks 1 together, and the building blocks in two adjacent structural layers are spliced ​​in a staggered manner; wherein, the staggered splicing means that the upper end of a building block 1 is spliced ​​with the lower ends of two adjacent building blocks 2 in its upper layer, and the lower end of a building block 1 is spliced ​​with the upper ends of two adjacent building blocks 3 in its lower layer.

[0031] It should be noted that the building block is a block structure with a trapezoidal vertical cross-section. The trapezoid includes an isosceles trapezoid and a right-angled trapezoid. When the vertical cross-section of the guardrail structure is an "I" shape, the shape of the vertical cross-section of the building block is an isosceles trapezoid. When the vertical cross-section of the guardrail structure is an "H" shape, the shape of the vertical cross-section of the building block is a right-angled trapezoid. The length direction of the building block is consistent with the length direction of the structural layer. A convex rib 2 is provided on the upper surface of the building block, and a slide groove 3 is provided on the lower surface of the building block. The length direction of the rib and the length direction of the slide groove are consistent with the length direction of the building block. The length value of the rib and the length value of the slide groove are the same as the length value of the building block. One end face of the rib is aligned with one end face of the building block, and the other end face of the rib is aligned with the other end face of the building block. One end of the slide groove is connected to one end face of the building block, and the other end of the slide groove is connected to the other end face of the building block. The shape and size of the rib match the shape and size of the slide groove. The rib can be inserted into the slide groove by horizontal sliding to form a detachable connection.

[0032] Among them, the rib is located on the upper surface of the building block, and the slide groove is located on the lower surface of the building block. The position of the rib corresponds to the position of the slide groove, the length direction of the rib and the length direction of the slide groove are parallel to the length direction of the building block, and the vertical transverse cross-sectional shape of the rib matches the vertical transverse cross-sectional shape of the slide groove; the vertical transverse cross-sectional shape of the rib is "Ω"-shaped, and the vertical transverse cross-sectional shape of the slide groove is "Ω"-shaped; when the building blocks in two adjacent structural layers are spliced ​​in a staggered manner, the adjacent building blocks are tightly fitted, that is, the side surfaces of two adjacent building blocks one are fitted to each other, the upper surface of building block one is fitted to the lower surface of building block two of its upper layer, and the lower surface of building block one is fitted to the upper surface of building block three of its lower layer.

[0033] like Figure 3 and Figure 4As shown in the figure, the left side of the horizontal plate is connected to the side surface of a precast wall, and the right side of the horizontal plate is connected to the side surface of another precast wall. There are two vertical plates 5 above the horizontal plate, one vertical plate is in front of the horizontal plate, and the other vertical plate is behind the horizontal plate. The left side of one vertical plate is connected to the side surface of a precast wall, and the right side of one vertical plate is connected to the side surface of another precast wall. The lower edge of the rear side of one vertical plate is connected to the front surface of the horizontal plate. The left side of the other vertical plate is connected to the side surface of a precast wall, and the right side of the other vertical plate is connected to the side surface of another precast wall. The lower edge of the front side of the other vertical plate is connected to the rear surface of the horizontal plate. The horizontal plate, the two vertical plates and the two precast walls together form a trough-shaped structure, and the trough-shaped structure is used to carry planting soil.

[0034] It should be noted that the left side and the right side of the vertical plate are respectively clamped and limited by groove-shaped angle steels 6, and the lower edge of the vertical plate can also be supported and limited by groove-shaped angle steels. The groove-shaped angle steels are connected to the side surface of the precast wall. The lower surface of the horizontal plate is respectively supported by two strip-shaped angle steels 7. The length value of the strip-shaped angle steel matches the length value of the horizontal plate. The strip-shaped angle steel and the groove-shaped angle steel are both connected to the side surface of the precast wall by expansion bolts. Among them, support brackets 8 are installed on the front surface of one vertical plate and the rear surface of the other vertical plate. The two support brackets are used to support and install communication pipelines 9. An anti-glare plate installation groove 10 and a precast irrigation port 11 are provided at the upper edge of the vertical plate. The anti-glare plate installation groove is used to install anti-glare plates, and the precast irrigation port is used to install irrigation water pipes.

[0035] Embodiment 2

[0036] As Figure 6 shown in the figure, increase the height of the convex rib of the building block, and at the same time adjust the height of the inner cavity of the building block chute. By increasing the height of the convex rib and the inner cavity of the chute, the contact area between the convex rib and the chute is increased, so as to improve the firmness when the building blocks are spliced alternately and improve the protection effect of the median guardrail.

[0037] Embodiment 3

[0038] As Figure 7 shown in the figure, modify the vertical and horizontal cross-sectional shape of the convex rib of the building block to a "ji" shape, and modify the vertical and horizontal cross-sectional shape of the building block chute to a "ji" shape. The others are the same as in Embodiment 1.

[0039] Embodiment 4

[0040] As Figure 8As shown, modify the vertical transverse cross-sectional shape of the convex rib of the building block into a "P" shape, and modify the vertical transverse cross-sectional shape of the sliding groove of the building block into a "P" shape. Such building blocks can be applied to various wall structures of median barriers, especially to the "H"-shaped wall structure, where the circular direction of the "P" faces the impact surface of the "H"-shaped wall structure, which can better improve the connection strength of the wall structure. Others are the same as in Embodiment 1.

[0041] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation. An element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including the element.

[0042] The above technical solutions only reflect the preferred technical solutions of the technical solutions of the present utility model. Some changes that those skilled in the art of this technology may make to some parts thereof all reflect the principles of the present utility model and fall within the protection scope of the present utility model.

Claims

1. An assembled central dividing strip guardrail, comprising a plurality of guardrail structures, wherein the guardrail structure is a wall structure with a vertical transverse cross section of an "I" shape or an "H" shape. When the vertical transverse cross section of the guardrail structure is an "I" shape, the guardrail structure is composed of a prefabricated wall. When the vertical transverse cross section of the guardrail structure is an "H" shape, the guardrail structure is composed of two prefabricated walls connected by a transverse plate (4), characterized in that: The prefabricated wall is formed by laying together multiple structural layers layer by layer in order from bottom to top to form a wall structure, wherein the structural layers are formed into a long strip structure by connecting multiple building blocks (1) together, and the building blocks in two adjacent structural layers are spliced ​​in a staggered manner.

2. The assembled central dividing strip guardrail according to claim 1, characterized in that: The building block is a block structure with a trapezoidal vertical cross-sectional shape. The upper surface of the building block is provided with a ridge (2), and the lower surface of the building block is provided with a slide groove (3). The ridge can be inserted into the slide groove by horizontal sliding to form a detachable connection.

3. The assembled central dividing strip guardrail according to claim 2 is characterized in that: The vertical transverse cross-section of the ridge is in an "Ω" shape, and the vertical transverse cross-section of the chute is in an "Ω" shape.

4. The assembled central dividing strip guardrail according to claim 3 is characterized in that: When the building blocks in two adjacent structural layers are spliced ​​in a staggered manner, the adjacent building blocks fit tightly together.

5. The assembled central dividing strip guardrail according to claim 1, characterized in that: Two vertical plates (5) are arranged above the horizontal plate, and the horizontal plate, the two vertical plates and the two prefabricated walls together form a trough-shaped structure.

6. The assembled central dividing strip guardrail according to claim 5, characterized in that: The vertical plate is clamped and limited by groove-shaped angle steel (6), and the lower surface of the horizontal plate is supported by long strip angle steel (7).

7. The assembled central dividing strip guardrail according to claim 6, characterized in that: A support bracket (8) is installed on the surface of the vertical plate, and the support bracket is used to support and install a communication pipeline (9).

8. The assembled central dividing strip guardrail according to claim 7, characterized in that: An anti-glare plate installation groove (10) and a prefabricated irrigation port (11) are provided on the upper edge of the vertical plate.

Images