WO2021189760A1

WO2021189760A1 - Toe-shaped track beam and straddle-type monorail traffic system

Info

Publication number: WO2021189760A1
Application number: PCT/CN2020/110520
Authority: WO
Inventors: 武农; 吕刚; 蒋小锐; 陈志广; 刘建友; 雷慧锋; 吴麦奎; 李汶京; 曹永刚; 汪胜; 周江天; 陈学峰; 马福东; 赵巧兰; 宋月光; 仲崇海; 张轩
Original assignee: 中铁工程设计咨询集团有限公司
Priority date: 2020-03-26
Filing date: 2020-08-21
Publication date: 2021-09-30
Also published as: CN111118977B; CN111118977A

Abstract

Disclosed are a toe-shaped track beam and a straddle-type monorail traffic system. The toe-shaped track beam comprises: beam bodies, which are sequentially connected end to end; first flange plates, which are connected to one side of the bottoms of the beam bodies; second flange plates, which are connected to the other side of the bottoms of the beam bodies; and connecting positions, which are arranged on the first flange plates and/or the second flange plates and are used for being connected to a rail pillow block. According to the present invention, structures such as supports and anchor boxes do not need to be arranged in a tunnel, such that the cross section of the tunnel can be significantly reduced, the construction cost is reduced, all loads can be prevented from being intensively enacted on the bottom of the tunnel, and the force applied to the bottom of the tunnel is effectively and uniformly dispersed.

Description

Toe-shaped track beam and straddle type monorail transportation system

Technical field

The invention relates to the field of rail transit, in particular to a toe-shaped track beam of a straddle-type monorail underground section and a straddle-type monorail transit system.

Background technique

After the straddle-type monorail enters the underground, in order to ensure the manufacturing accuracy of the track, the structure of the support type prefabricated track beam is mostly used in the tunnel at present, which makes the train load and the load of the track beam itself concentrated on the support pier , The lower part of the support also needs an anchor box, which causes the tunnel space to contain track beams, supports, anchor boxes and other series of components, and the lower space is wasted. At the same time, the overall size of the tunnel section is too large, which significantly increases the project cost and reduces the span The economics of the seat-type monorail underground section. Furthermore, the above-mentioned supported precast track beam will also cause concentrated tensile pressure at the bottom of the tunnel, so it can hardly be used in shields and underground excavated soil tunnels with a thin bottom.

Summary of the invention

In view of the shortcomings of the prior art, the present invention provides a toe-shaped track beam and straddle monorail transportation system, which does not need to set up supports, anchor boxes and other structures in the tunnel, which can greatly reduce the tunnel section and reduce the project cost. , It can prevent all loads from being concentrated on the bottom of the tunnel, effectively dispersing the force on the bottom of the tunnel evenly.

In order to achieve the above objectives, the present invention provides the following technical solutions:

A toe-shaped track beam is provided, which includes: beam bodies connected end to end in sequence; a first flange plate connected to one side of the bottom of the beam body; and a second flange plate connected to another bottom of the beam body Side; connecting position, which is provided on the first flange plate and/or the second flange plate for connecting track sleepers.

Preferably, at least one beam body is an internal hollow structure.

Preferably, a wear-resistant layer is provided on the top of each beam.

Preferably, the beam body, the first flange plate, and the second flange plate are integrally prefabricated.

Preferably, the toe-shaped track beam further includes: a beam backing plate connected to the bottom of the first flange plate and/or the bottom of the second flange plate.

Preferably, each beam body has a tooth-shaped structure at the head and tail, so that two adjacent beam bodies are in tenon and butt joint.

A straddle-type monorail transportation system is also provided, which includes: a tunnel; a track sleeper, which is arranged in the tunnel and connected to the bottom of the tunnel; and the toe-shaped track beam passes through the first flange The plate and/or the second flange plate are connected to the upper end surface of the track sleeper block.

Preferably, the rail sleeper includes: a sleeper body; a bottom support part connected to the bottom of the sleeper body; and a transverse stopper connected to the end of the sleeper body.

Preferably, the main body of the pillow block, the bottom support portion and the transverse stopper are integrally prefabricated.

Preferably, the track sleepers are arranged along the extension direction of the track beams, and the spacing is 1.2-1.5m.

Compared with the prior art, the present invention has the following beneficial effects:

The load bearing structure of the track beam in the present invention has a small dead weight, saves materials, is economical and environmentally friendly, and can improve the anti-overturning stability of the beam body by arranging flange plates. At the same time, the track beam can be a prefabricated part, which is convenient for installation, maintenance and replacement. The straddle-type monorail transportation system does not need to set up supports, anchor boxes and other structures in the tunnel, which can greatly reduce the tunnel section and reduce the project cost. force.

Description of the drawings

Figure 1 is the overall structure diagram of the straddle monorail transit system in the present invention;

Figure 2 is an elevation view of the toe-shaped track beam of the underground section of the straddle monorail in the present invention;

Figure 3 is an elevation view of the track sleeper in the present invention;

4 is a schematic diagram of the connection between the toe-shaped track beam and the track sleeper in the underground section of the straddle-type monorail according to the present invention;

Figure 5 is a plan view of the track sleeper in the present invention;

Figure 6 is a longitudinal section view of the straddle monorail transportation system of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

Example 1:

As shown in Figures 1-2, the toe-shaped track beam in this embodiment is specifically a straddle-type monorail underground section toe-shaped track beam, which includes: a plurality of beams 100 connected end to end in sequence; a first flange plate 1 , Which is connected to the bottom side of the beam body 100; the second flange plate 2, which is connected to the other side of the bottom of the beam body 100, the first flange plate 1 and the second flange plate 2 along the beam The vertical center axis Y of the body 100 is symmetrically arranged; the connecting position 3 (such as a bolt hole, etc.) is arranged on the first flange plate 1 and/or the second flange plate 2 for connecting rail sleepers, There may be two connecting positions 3, and they are also symmetrically arranged along the vertical center axis Y of the beam body 100. Thus, flange plates can be provided on both sides of the bottom of the beam body 100 to improve the anti-overturning stability of the rail beam under the action of the train rolling force and the centrifugal force of the curve section.

Further, the beam body 100, the first flange plate 1, and the second flange plate 2 are integrally prefabricated, and they are all made of lightweight high-strength concrete, so that mass production can be realized through factory prefabrication, and The manufacturing precision is high, it can be assembled at the construction site, and it is convenient for subsequent maintenance and replacement to improve construction efficiency; at the same time, at least one beam body 100 is an internal hollow structure with an internal cavity 101, which can reduce dead weight, save materials, and reduce project costs.

Further, a wear-resistant layer 102 is provided on the top of each beam 100. Preferably, the wear-resistant layer 102 is a concrete layer, thereby improving the accuracy and wear resistance of the contact surface between the beam 100 and the vehicle; A beam body 100 has tooth-shaped structures 104 at the head and tail, so that two adjacent beam bodies 100 are butt-jointed through the tooth-shaped structure 104 to form a staggered tenon-shaped tooth structure, thereby improving the longitudinal smoothness of the track beam.

Example 2:

The difference between this embodiment and Embodiment 1 is that, as shown in FIG. 2, the toe-shaped track beam further includes: a beam backing plate 4, which is connected to the bottom of the first flange plate 1 and/or the second The bottom of the two-flange plate 2 is used to adjust the height and shape of the track beam to better adapt to the construction accuracy requirements of different topography and landforms.

Example 3:

This embodiment provides a straddle-type monorail transportation system, as shown in FIG. 1-2, which includes: a tunnel 200; track sleepers, which are arranged in the tunnel 200; the toe described in

embodiment

1 or 2. Shaped track beam, which extends along the traveling direction of the vehicle (such as a straddle monorail train), and is connected to the upper end surface of the rail sleeper through the first flange plate 1 and/or the second flange plate 2 of the beam body 100 , The vehicle runs on the toe-shaped rail beam and along the beam body 100.

Specifically, as shown in Figs. 3-4, the track sleeper in this embodiment includes: a sleeper body 5; a beam body connection 6 (such as a bolt hole, etc.), which is arranged on the upper end surface of the sleeper body 5. Used to connect the first flange plate 1 and/or the second flange plate 2. In this embodiment, the fasteners S (such as bolts, etc.) pass through the flange plate connection position 3 and the beam body connection position 6 in order to The beam body 100 is connected to the upper end surface of the pillow body 5; the bottom support portion 7 is connected to the bottom of the pillow body 5 to form a "concave" structure integrally with the bottom of the pillow body 5; and a lateral stop The block 8 is connected to the end of the pillow block body 5. Preferably, the bottom support portion 7 and the lateral stopper 8 have two, and they are both symmetrically arranged along the vertical central axis Y'of the pillow body 5, and each beam 100 is located at two lateral stoppers. Between 8.

As shown in Figure 1, the rail sleeper is connected to the bottom of the tunnel 200 through the bottom support 7 and/or the bottom surface of the sleeper body 5. In this embodiment, the bottom support 7 and/or the sleeper The bottom surface of the main body 5 and the tunnel 200 are cemented by self-leveling concrete, and the bottom support portion 7 and the bottom surface of the pillow body 5 are concave structures as a whole, which is more conducive to the pouring of self-leveling concrete, and can also be planted in self-leveling concrete. Ribs to improve the connection strength.

At the same time, the pillow block body 5, the bottom support portion 7 and the transverse stop block 8 are integrally prefabricated, and as shown in FIG. 5, the overall length L of the track pillow is 2000mm, and the overall width W is 200-300mm or 400-600mm, The overall length L includes the lengths of the lateral stopper 8 and the pillow block body 5; thus, mass production can be realized through factory prefabrication, and the manufacturing accuracy is high, it can be assembled at the construction site, and it is convenient for subsequent maintenance and replacement. Improve construction efficiency and reduce project cost.

Similarly, as shown in FIG. 3, the track sleeper in this embodiment further includes: a sleeper pad 9 connected to the bottom of the bottom support part 7. As a result, the overall height and shape of the track sleeper can be adjusted through the sleeper pad 9 so as to better adapt to the construction accuracy requirements of different topography and landforms. Further, the pillow block pad 9 is a prefabricated concrete part, which has the advantages of high rigidity and high strength.

As shown in Figure 6, the track sleepers are arranged along the extension direction of the track beams, and in order to spread the load of the track beams evenly through the track sleepers to the bottom of the tunnel and the surrounding rock, each ring of tunnel segment 201 is provided with a The track sleeper blocks and the distance between the track sleepers is 1.2~1.5m, which can greatly reduce the span of the track beam by setting a reasonable spacing, further reduce the bending moment of the track beam and greatly reduce the amount of reinforcement.

Furthermore, there are two types of rail sleepers in this embodiment: the overall length L is 2000mm, and the overall width W is 200-300mm or 400-600mm (the model with a width W of 400-600mm is shown in Figures 1 and 6). Reference numeral 401, the model with a width W of 200-300mm is reference numeral 402 in Figures 1 and 6); wherein the track sleeper with an overall width of 400-600mm is located at the joint 105 of the beam body (that is, two adjacent beams Therefore, the weight of the joint 105 of the track beam body can be supported by the rail sleeper block with a wider width, so that the track beam can be prevented from being disjointed, and the connection stability can be further improved.

As a result, the straddle-type monorail transportation system in this embodiment has a simple structural design, and does not need to set up supports, anchor boxes and other structures in the tunnel, thereby reducing the size of the tunnel section and reducing the cost; and the vehicle (that is, the straddle-type The load of the monorail train is transferred to the sleeper through the track beam, and then transferred to the bottom structure of the tunnel (such as the invert), and finally borne by the surrounding rock of the tunnel, so that the force of the bottom structure of the tunnel is uniform and reasonable, and the train load is avoided. The load of the track beam is concentrated on the buttresses, causing the bottom of the tunnel to be concentrated and damaged.

In summary, the track sleepers and beam bodies in the present invention can be prefabricated parts, which can realize factory and large-scale prefabrication, have high manufacturing precision, and have a height adjustment function, which can easily connect the track beam and the tunnel, and is convenient Construction and post-maintenance; at the same time, the straddle-type monorail transportation system is convenient for construction and installation, and the structure is stable. The straddle-type monorail transportation system does not need to set up supports, anchor boxes and other structures in the tunnel, which can greatly reduce the tunnel section , Reduce the project cost, and avoid all loads concentrated on the bottom of the tunnel, effectively and evenly dispersing the force on the bottom of the tunnel.

It should be noted that the technical features in the foregoing embodiments 1 to 3 can be combined arbitrarily, and the combined technical solutions all belong to the protection scope of the present application. And in this article, terms such as "include", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also Other elements that are not explicitly listed, or also include elements inherent to this process, method, article, or equipment. If there are no more restrictions, the element defined by the sentence "including a..." does not exclude the existence of other identical elements in the process, method, article, or equipment that includes the element.

Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. And variations, the scope of the present invention is defined by the appended claims and their equivalents.

Claims

A toe-shaped track beam is characterized by comprising: beam bodies connected end to end in sequence; a first flange plate connected to the bottom side of the beam body; and a second flange plate connected to the bottom part of the beam body. One side; the connecting position, which is provided on the first flange plate and/or the second flange plate, and is used to connect the track sleepers; the beam body backing plate, which connects the bottom of the first flange plate and/or Or the bottom of the second flange plate; the first flange plate and the second flange plate support the beam upward so that the bottom of the beam is suspended.
The track beam according to claim 1, wherein at least one beam body is an internal hollow structure.
The track beam according to claim 1, wherein the top of each beam body is provided with a wear-resistant layer.
The track beam according to claim 1, wherein the beam body, the first flange plate, and the second flange plate are integrally prefabricated.
The track beam according to claim 1, wherein each beam body has a tooth-shaped structure at the end and end, so that two adjacent beam bodies are connected by tenon and tenon.
A straddle-type monorail transportation system, which is characterized by comprising: a tunnel; a track sleeper, the components of which include a sleeper body, a bottom support portion located at the lower end of the sleeper body and oppositely disposed, and an upper end of the sleeper block Two lateral stoppers on opposite sides, the bottom support part is connected to the tunnel and the connecting surface is inclined outward, the pillow body is supported by the bottom support part in the tunnel suspended upward; any one of claims 1-5 The toe-shaped rail beam is connected to the upper end surface of the pillow body through the first flange plate and/or the second flange plate and is located between the two transverse stoppers, the pillow body The upper end surface is provided with a beam body connection position connected with the connection position, the beam body connection position extends downwardly into the corresponding bottom support part, and the connection position and the beam body connection position are connected by a fastener.
7. The straddle-type monorail transportation system according to claim 6, wherein the main body of the sleeper block, the bottom support portion and the lateral stopper are integrally prefabricated.
7. The straddle-type monorail transportation system according to claim 6, wherein the track sleepers are arranged along the extension direction of the track beams, and the spacing is 1.2-1.5m.