CN220888162U

CN220888162U - Single-block type assembled track structure of straddle type monorail tunnel

Info

Publication number: CN220888162U
Application number: CN202322378121.7U
Authority: CN
Inventors: 林东; 曾新平; 裴利华; 张俊龙; 何磊; 许东; 杨均; 周瑞锋; 杨友彬; 洪闰林; 包容; 杨雪洁
Original assignee: China Railway Siyuan Survey and Design Group Co Ltd; Southwest Survey and Design Co Ltd of China Railway Siyuan Survey and Design Group Co Ltd
Current assignee: China Railway Siyuan Survey and Design Group Co Ltd; Southwest Survey and Design Co Ltd of China Railway Siyuan Survey and Design Group Co Ltd
Priority date: 2023-09-01
Filing date: 2023-09-01
Publication date: 2024-05-03
Anticipated expiration: 2033-09-01

Abstract

The utility model discloses a single block type assembled track structure of a straddle type monorail tunnel, which belongs to the technical field of straddle type monorail tunnels and comprises a plurality of track units which are sequentially arranged along the longitudinal direction, wherein each track unit comprises a beam body positioned at the upper part and a base positioned at the lower part, the beam body and the base are integrally cast and formed, the beam body and the base adopt a hollow structure, the dead weight is reduced, the transportation and the construction are convenient, a secondary casting layer can be arranged at the periphery of the beam body, after the track unit installation is finished, the construction of the secondary casting layer at the periphery of the beam body is carried out, so that the integrity of the secondary casting layer is ensured, the smoothness of the running surface of the track structure is ensured, and interfaces and joints are respectively arranged on two adjacent end surfaces of each track unit to improve the installation precision of the track units.

Description

Single-block type assembled track structure of straddle type monorail tunnel

Technical Field

The utility model belongs to the technical field of straddle type monorail tunnels, and particularly relates to a single block type assembled track structure of a straddle type monorail tunnel.

Background

The straddle type monorail transportation is a rail transportation system for vehicles to travel on a straddle type rail beam through rubber wheels, and is suitable for traffic main lines in medium cities, large urban traffic encryption lines, urban traffic lines with relatively complex topography and sightseeing lines. And when the demand of the urban core section with dense buildings or the urban landscape is high, the straddle type monorail line is usually laid underground.

Currently, the track structure type of the monorail tunnel mainly comprises a support, a prefabricated track beam, a track wall or a fully prefabricated (semi-prefabricated) track wall and the like. However, the problems that the prefabricated part is oversized, dead weight is overweight, the connecting structure between the prefabricated part and the tunnel segment or the inverted arch is unreasonable, the connecting strength is not up to standard and the like exist in the actual construction process.

Therefore, there is a need for an assembled track structure, in which the size of the prefabricated member is smaller, the connection structure between the prefabricated member and the tunnel segment is reasonable, the on-site transportation and installation are convenient, and the local stress and the sedimentation difference of the tunnel are prevented.

Disclosure of utility model

In order to meet one or more of the above defects or improvement requirements of the prior art, the utility model provides a single block type assembled track structure of a straddle type single track tunnel, wherein track units are obtained by integrally casting a beam body and a base, and the track units are arranged in sequence along the longitudinal direction to obtain the track structure, so that the site construction efficiency is improved.

In order to achieve the above object, the present utility model provides a monolithic fabricated track structure for a straddle-type monorail tunnel, which is disposed on a tunnel floor, and is characterized by comprising a plurality of track units sequentially disposed in a longitudinal direction,

The track unit comprises a beam body positioned on the upper portion and a base positioned on the lower portion, wherein the beam body is integrally formed with the base, and the bottom of the base is of an arc-shaped structure, so that the bottom of the base is matched with a tunnel bottom plate.

As a further improvement of the utility model, the periphery of the beam body is provided with a secondary pouring layer, and the secondary pouring layer is formed by pouring pavement materials.

As a further improvement of the utility model, the periphery of the beam body is provided with a shear member, and the secondary pouring layer is connected with the shear member in an anchoring manner.

As a further improvement of the utility model, wing plates are respectively arranged on two sides of the base, and the lower surfaces of the wing plates are flush with the bottom surface of the base.

As a further improvement of the utility model, the beam body and/or the base are/is provided with through holes penetrating through the front end face and the rear end face of the beam body and/or the base, so that cavities are respectively formed in the beam body and/or the base.

As a further development of the utility model, at least one connecting and/or positioning part is provided between two adjacent rail units for the purpose of butt-jointing and/or connecting the two rail units.

As a further improvement of the utility model, the positioning part comprises joints and interfaces which are respectively arranged on two adjacent end surfaces of the two rail units and are matched and butted with each other, the joints and interfaces are used for realizing the butt joint of the two rail units,

And/or

The connecting part comprises two corresponding mounting holes and connecting pieces penetrating through the two mounting holes, wherein the two mounting holes are respectively arranged on two adjacent end faces of the track units, and the connecting pieces are used for realizing connection of the two track units.

As a further improvement of the utility model, the side wall surface of the track unit is provided with blind holes, the blind holes are arranged in one-to-one correspondence with the mounting holes, and the blind holes are communicated with the mounting holes.

As a further improvement of the utility model, two sides of the track unit are respectively provided with a side structural beam, the side structural beams comprise anchor bars pre-embedded on the tunnel bottom plate and concrete poured on the anchor bars, and the upper surfaces of the side structural beams are flush with the upper surface of the base.

As a further improvement of the utility model, a buffer pad is arranged between the base and the tunnel bottom plate;

Slurry materials are arranged between the track units and the tunnel bottom plate so as to fill gaps tightly.

The above-mentioned improved technical features can be combined with each other as long as they do not collide with each other.

In general, the above technical solutions conceived by the present utility model have the following beneficial effects compared with the prior art:

(1) The utility model relates to a single-block type assembled track structure of a straddle type single-track tunnel, which comprises a plurality of track units which are sequentially arranged along the longitudinal direction, wherein the track units are track precast blocks, each track unit comprises an upper track beam and a lower base, the track beams and the bases are integrally cast and formed, the track structure is divided into track sections, the size of the precast product is reduced, and a hollow structure is formed in the track units, so that the dead weight of the precast product is reduced, the site transportation and the installation are convenient, and the construction efficiency is improved;

(2) According to the single-piece type assembled track structure of the straddle type monorail tunnel, the bottom of the base is provided with the arc-shaped structure matched with the tunnel bottom plate, and the track structure and the tunnel bottom plate (tunnel duct piece) are connected in a through-length mode, so that loads transmitted to the tunnel by the vehicle and the track structure are uniformly distributed, longitudinal differential settlement is small, the stress of the tunnel is reasonable, and two adjacent track units in the longitudinal direction are connected through the second connecting piece, so that the longitudinal connection strength is improved;

(3) According to the single-piece type assembled track structure of the straddle type single-track tunnel, the interfaces and the joints are respectively arranged on the two adjacent end faces of each track unit, and the installation accuracy of the track units is improved through the matching butt joint of the interfaces and the joints;

(4) The utility model provides a single-block type assembled track structure of a straddle type monorail tunnel, which comprises a beam body and a secondary pouring layer arranged on the outer periphery of the beam body, wherein the beam body and a base are integrally poured to form a track precast block, and after the installation construction of a plurality of sections of track unit precast blocks is completed, the integral pouring construction of the secondary pouring layer is carried out, so that the construction precision requirement of a running track of a monorail vehicle can be met, and the running smoothness is ensured;

(5) The single-block type assembled track structure of the straddle type monorail tunnel is characterized in that gaps among track units and between the track units and a tunnel bottom plate are densely filled with slurry, side structure beams are arranged on two sides of the track units, so that the integrity of the track structure is improved, and construction of filling layers, ditches and other functional facilities is completed in the track structure main body, so that functions of evacuation, drainage and the like of the tunnel are perfected.

Drawings

FIG. 1 is a schematic cross-sectional view of a monolithic fabricated track structure for a straddle-type monorail tunnel in accordance with example 1 of the present utility model;

FIG. 2 is a schematic longitudinal sectional view of a monolithic fabricated track structure for a straddle-type monorail tunnel according to embodiment 1 of the present utility model;

FIG. 3 is a schematic cross-sectional view of a monolithic fabricated track structure for a straddle-type monorail tunnel according to embodiment 2 of the present utility model;

Like reference numerals denote like technical features throughout the drawings, in particular: 1. a first prefabricated block; 2. a second track unit; 201. a second prefabricated block; 202. a shear member; 203. secondary pouring layer; 3. a positioning part; 4. a first connector; 5. a cushion pad; 6. a side structural beam; 7. anchor bars; 8. a ditch; 9. a hand hole; 10. a tunnel floor.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model. In addition, the technical features of the embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

Examples:

The construction of a monolithic fabricated track for a straddle-type monorail tunnel in accordance with a preferred embodiment of the present utility model is shown in fig. 1-3. The track structure is arranged on a tunnel bottom plate 10 and comprises a plurality of track units and two side structure beams 6, wherein the track units are sequentially arranged along the longitudinal direction of a tunnel, the two side structure beams 6 are respectively arranged on two sides of the track units, each track unit comprises a track beam positioned on the upper portion and a base positioned on the lower portion, the bottom of the base is of an arc-shaped structure matched with the tunnel bottom plate 10, and the base is connected with the tunnel bottom plate 10 through a first connecting piece 4. Further, the length of each track unit is 1-10 m, and is determined according to the actual situation of the site and the hoisting capacity of the transportation equipment, so that the length of the track units can be reduced as much as possible, and meanwhile, the track units are plugged by plugging materials.

As shown in fig. 1 and 2, in a preferred embodiment, the first rail unit includes a first beam body and a base, the first beam body and the base are integrally formed and formed by concrete pouring, and a first precast block 1 (i.e., the first rail unit) is formed, wherein through holes penetrating through front and rear end surfaces of the base and the first beam body are formed in the middle of the base and the first beam body, so that the first beam body and the middle of the base respectively form a cavity, i.e., a hollow structure, to reduce the overall weight of the first rail unit, and a plurality of first beam bodies are sequentially spliced in a longitudinal direction, so that a rail beam structure can be formed, and further, the overall structure of the first beam body is dumbbell-shaped, and both side surfaces of an upper portion and a lower portion of the first beam body serve as contact surfaces of guide wheels and/or stabilizing wheels.

As shown in fig. 3, in another preferred embodiment, the second track unit 2 includes a second beam body and a base, the second beam body and the base are integrally cast to form a second precast block 201, further, a secondary casting layer 203 is further disposed on the outer periphery of the second beam body to form a track beam structure, and since the secondary casting layer 203 is further required to be disposed on the outer periphery of the beam body, the beam structure itself is smaller in size, which achieves the purposes of reducing size and weight without reducing weight by forming a hollow interior, on one hand, and is limited in size and cannot form an internal cavity, on the other hand. Thus, in this embodiment, only the base is provided with through holes penetrating the front and rear end surfaces thereof, and preferably, the through holes are two symmetrically disposed. Further preferably, the secondary casting layer is made of pavement materials including one or more of concrete, asphalt, sand and other pavement materials.

Further, in the casting molding process of the second beam body and the base, various shear members 202 including steel plates and shear nails are pre-embedded on the peripheral wall surface (namely the top and the side part of the beam body structure) of the second beam body, so that when the construction of the secondary casting layer 203 is carried out, the secondary casting layer 203 and the shear members 202 form anchoring connection, and the integrity between the secondary casting layer 203 and the second beam body is ensured. To be more specific, when the secondary pouring layer 203 is constructed, the installation and construction of the second precast blocks 201 of the segments need to be completed, and the overall pouring of the secondary pouring layer 203 is performed by arranging the side formwork, so that the accuracy requirement of the running surface of the vehicle is met.

Further, a first through hole communicated with the cavity is formed in the bottom of the base, the first connecting piece 4 arranged on the tunnel bottom plate 10 penetrates through the first through hole, so that the fixed connection of the track unit and the tunnel bottom plate 10 is achieved, the first connecting piece 4 is preferably a bolt, one end of the first connecting piece is embedded in the tunnel bottom plate 10, an external thread structure is arranged on the periphery of the other end of the first connecting piece, the first through hole penetrates through the first through hole, the first through hole is formed in the cavity of the base and is matched with the nut, and the fastening connection between the track unit and the tunnel bottom plate 10 is achieved through screwing the nut. In the actual installation process, the track unit can be positioned through the butt joint of the first through hole and the first connecting piece 4, so that the installation accuracy is improved.

Further, wing plates are respectively arranged on two sides of the base, and the bottom surfaces of the wing plates are flush with the bottom surface of the base, so that the bottom surface of the whole track unit forms a continuous arc-shaped structure to be matched with the tunnel bottom plate 10. The wing plates are provided with second through holes penetrating the upper and lower end surfaces thereof, and the first connecting members 4 also penetrate through the second through holes to strengthen the connection of the track units with the tunnel bottom plate 10. Further preferably, the wing plate is integrally cast with the rail unit. Further, when an excessively long prefabricated block of the track unit is selected, the first connecting piece 4 is not required to be arranged in the tunnel bottom plate 10 corresponding to the base in advance, and the fixed connection between the track unit and the tunnel bottom plate is completed through the connection between the wing plate and the tunnel bottom plate 10.

In one embodiment, the two wing plates on two sides of the base are symmetrically arranged about the vertical plane of the longitudinal center of the base, so that the length, width and thickness of the two wing plates are consistent, and meanwhile, the front end surface and the rear end surface of the wing plates are flush with the two end surfaces of the base. Further, the second through holes are a plurality of arranged at intervals along the longitudinal direction. Further illustratively, the longitudinal center of the beam is perpendicular to the horizontal plane and extends longitudinally past the longitudinal center of the beam.

Further, at least one positioning part 3 and/or a connecting part is arranged between two adjacent track units for realizing butt joint and/or connection between two longitudinally adjacent track units.

Further, the positioning portion 3 includes an interface and a joint that are respectively disposed on two adjacent end surfaces of the two track units, the interface and the joint can be mutually matched, so that when two adjacent track units are installed, whether the two are in the same position in the circumferential direction and the vertical direction is judged by whether the interface and the joint are matched and butted, so that the assembly precision is improved, and further preferably, the joint is of a tenon structure and corresponds to the tenon structure, and the interface is of a tenon structure.

Further, as shown in fig. 1, when the beam is the first beam, the joints or interfaces are preferably four provided on the end face of the rail unit. As shown in fig. 3, when the beam is the second Liang Tishi, the joints or interfaces are preferably two disposed on the end face of the beam. It should be noted that the connectors and the interfaces may be disposed on the same end face in a crossing manner, but when in use, the track unit structures on the same line should be kept uniform.

Further, the connecting portion comprises mounting holes which are formed in the end faces of two adjacent track units and second connecting pieces which penetrate through the two mounting holes, the two track units are fixedly connected through the second connecting pieces, and therefore the butt joint of the two track units in the longitudinal direction is achieved. Further preferably, the mounting holes are a plurality of on the end face of the rail unit.

In a preferred embodiment, the second connecting piece is an anchor bolt, before the track units are installed, the second connecting piece is preloaded into the installation hole of one end face of the track units uniformly, and when the track units are installed, the anchor bolt stretches into the installation hole of the other track unit, so that the two track units are fixedly connected.

In another preferred embodiment, the mounting hole is a screw hole, the second connecting piece is a bolt, the second connecting piece is matched with the second connecting piece, a hand hole 9 is arranged corresponding to the mounting hole, the hand hole 9 is a blind hole formed in the side wall surface of the rail unit, the blind hole is communicated with the mounting hole, after the butt joint of the rail unit is completed, a worker can insert the bolt into the two screw holes through the blind hole, and the connection of the two rail units is realized by screwing the nut.

Further, a cushion pad 5 is provided between the track precast block and the tunnel floor 10, and height adjustment is performed by increasing or decreasing the cushion pad 5. Further preferably, the cushion pad 5 is a plurality of cushion pads arranged at intervals along the circumferential direction, and the cushion pads 5 are arranged corresponding to the first connecting piece 4, that is, the cushion pads 5 are located at the fixed connection position of the base and the tunnel bottom plate 10, so as to play a role of buffering.

Further, after the installation of the precast block is completed, the gap is filled with filling slurry in a pressurizing manner, then the construction of the side structural beams 6 is performed, the side structural beams 6 comprise anchor bars 7 and concrete which are pre-buried on the tunnel bottom plate 10, two spaces are respectively formed between two side wall surfaces of the tunnel and the precast block through arranging the supporting molds on the tunnel bottom plate 10, the anchor bars 7 are pre-buried on the tunnel bottom plate 10 in the spaces, the side structural beams 6 positioned on two sides of the track unit are formed by casting concrete in the spaces, and the top surfaces of the side structural beams 6 are flush with the top surfaces of the bases and form tight combination with the track unit so as to play a reinforcing role on the track unit.

After the construction of the side structural beams 6 is completed, the forms are removed and the construction of the ditch 8, the filling layer and other auxiliary facilities is performed, thereby ensuring the improvement of the evacuation and drainage functions and other functions of the tunnel.

The track structure comprises a plurality of track units which are sequentially arranged along the longitudinal direction, wherein each track unit comprises a beam body positioned at the upper part and a base positioned at the lower part, the beam body and the base are integrally cast and formed, further, a secondary casting layer can be arranged at the periphery of the beam body, and after the track units are installed, the construction of the secondary casting layer at the periphery of the beam body is carried out, so that the integrity of the secondary casting layer is ensured, the beam body and the base adopt a hollow structure, the dead weight is reduced, the transportation and the construction are convenient, and the installation precision of the track units is improved by arranging interfaces and joints on two adjacent end surfaces of each track unit respectively.

It will be readily appreciated by those skilled in the art that the foregoing description is merely a preferred embodiment of the utility model and is not intended to limit the utility model, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the utility model are intended to be included within the scope of the utility model.

Claims

1. A single block type assembled track structure of a straddle type monorail tunnel is arranged on a tunnel bottom plate and is characterized by comprising a plurality of track units which are sequentially arranged along the longitudinal direction,

2. A straddle type monorail tunnel monolithic fabricated track structure according to claim 1, wherein the beam body periphery is provided with a secondary casting layer formed by casting of pavement material.

3. A straddle type monorail tunnel monolithic fabricated track structure according to claim 2, wherein said beam body is provided with shear members at its periphery, said secondary casting layer being in anchored connection with said shear members.

4. A straddle type monorail tunnel monolithic fabricated track structure according to any one of claims 1-3, wherein wing plates are respectively arranged on two sides of said base, and the lower surfaces of said wing plates are flush with the bottom surface of said base.

5. A straddle type monorail tunnel monolithic fabricated track structure according to any one of claims 1 to 3, wherein said beam and/or said base are provided with through holes penetrating through front and rear end surfaces thereof, such that the interiors of said beam and/or said base respectively form cavities.

6. A straddle type monorail tunnel monolithic fabricated track structure according to any one of claims 1-3, wherein at least one connection and/or positioning portion is provided between two adjacent track units for enabling butt joint and/or connection of the two track units.

7. The straddle type monorail tunnel monolithic fabricated track structure according to claim 6, wherein said positioning portion comprises joints and interfaces which are respectively provided on two adjacent end surfaces of said track units and are matched and butted with each other, for realizing the butt joint of the two track units,

And/or

8. The straddle type monorail tunnel monolithic assembly track structure according to claim 7, wherein blind holes are formed in the side wall surfaces of the track units, the blind holes are arranged in one-to-one correspondence with the mounting holes, and the blind holes are communicated with the mounting holes.

9. A straddle type monorail tunnel monolithic fabricated track structure according to any one of claims 1-3, wherein side structural beams are respectively arranged on two sides of the track unit, each side structural beam comprises an anchor bar pre-buried on the tunnel bottom plate and concrete poured on the anchor bar, and the upper surface of each side structural beam is flush with the upper surface of the base.

10. A straddle-type monorail tunnel monolithic fabricated track structure according to any one of claims 1-3, wherein a cushion pad is provided between said base and said tunnel floor;