Roadbed structure of straddle type monorail low-lying line and construction method thereof
阅读说明:本技术 跨座式单轨低置线路的路基结构及其施工方法 (Roadbed structure of straddle type monorail low-lying line and construction method thereof ) 是由 康承磊 谢淼 焦世杰 张健 盘法侦 李晓娜 杨昆 王海蝶 于 2020-06-24 设计创作,主要内容包括:本发明提供了一种跨座式单轨低置线路的路基结构及其施工方法,路基结构包括用于支撑跨座式单轨的轨道梁的多个墩台和多个支承件,多个墩台沿轨道梁的延伸方向间隔布设,墩台支撑于轨道梁的端部并与轨道梁的底部固定连接;同一轨道梁的相邻两墩台之间设置有支承件,支承件支撑于轨道梁的底部且轨道梁能够脱离支承件的支撑。该路基结构的墩台与支承件同时承担轨道梁及其上部列车的荷载,并将荷载传递至地层中,同时支承件能够控制轨道梁的变形,结构稳定可靠。相比于高架形式的结构,本发明的路基结构减少了桥梁占比,缩短了工期,显著降低了投资造价。(The invention provides a roadbed structure of a straddle type monorail low-lying line and a construction method thereof, wherein the roadbed structure comprises a plurality of piers and a plurality of supporting pieces, wherein the piers are used for supporting a track beam of a straddle type monorail; and a supporting part is arranged between two adjacent abutments of the same track beam, the supporting part is supported at the bottom of the track beam, and the track beam can be separated from the support of the supporting part. The pier and the supporting piece of the roadbed structure simultaneously bear the load of the track beam and the train on the upper portion of the track beam and transmit the load to the stratum, and meanwhile, the supporting piece can control the deformation of the track beam, and the structure is stable and reliable. Compared with an overhead structure, the roadbed structure provided by the invention has the advantages that the bridge occupation ratio is reduced, the construction period is shortened, and the investment cost is obviously reduced.)
1. The utility model provides a stride roadbed structure of a formula monorail low circuit of putting which characterized in that: the device comprises a plurality of abutments and a plurality of supporting pieces, wherein the abutments are used for supporting a track beam of the straddle type monorail and are arranged at intervals along the extending direction of the track beam, and the abutments are supported at the end part of the track beam and are fixedly connected with the bottom of the track beam; the supporting piece is arranged between every two adjacent abutments of the same track beam, the supporting piece is supported at the bottom of the track beam, and the track beam can be separated from the supporting piece.
2. The roadbed structure of claim 1, wherein the support members are formed with grooves, and the bottom of the track beams are wedged into the grooves.
3. The roadbed structure of claim 2, wherein the support member comprises an auxiliary beam, a connection plate provided on the auxiliary beam, the auxiliary beam being laid under the track beam, and a groove formed on the connection plate to wedge the track beam.
4. The roadbed structure of claim 3, wherein the auxiliary beams are arranged perpendicular to the extending direction of the track beams; and/or
Grooves are formed in the two ends, perpendicular to the direction of the track beams, of the connecting plate respectively and used for wedging the two track beams.
5. The roadbed structure of claim 1, wherein one of the supporting members is arranged between two adjacent abutments, and the supporting member is positioned between the two abutments.
6. The roadbed structure according to any one of claims 1 to 5, wherein the lower part of the support member is buried in the ground, and the thickness of the support member buried in the ground is 1/4 to 1 of the thickness of the support member.
7. The roadbed structure of any one of claims 1 to 5, wherein the pier comprises a bearing platform, a support and a plurality of cast-in-situ bored piles for supporting the bearing platform, the support is arranged on the bearing platform and is fixedly connected with the track beam to support the track beam, the top ends of the plurality of cast-in-situ bored piles are supported on the bearing platform, and the bottom ends of the plurality of cast-in-situ bored piles penetrate through the weak stratum and then extend into the bearing stratum.
8. The roadbed structure of claim 7, wherein the bearing platform is perpendicular to the extending direction of the track beam, the number of the support bases is multiple, and the plurality of the support bases are arranged on the bearing platform at intervals to support the plurality of track beams.
9. The roadbed structure of claim 7, wherein the lower part of the bearing platform is buried in the ground, and the thickness of the bearing platform buried in the ground is 1/4-1 of the thickness of the bearing platform.
10. A roadbed structure construction method, which is used for constructing the roadbed structure of the straddle-type monorail low-lying line of any one of claims 1 to 9, and comprises the following steps:
constructing a plurality of piers, and arranging the plurality of piers at intervals along the extending direction of the track beam and supporting the plurality of piers at the end part of the track beam;
fixedly connecting the plurality of abutments with the bottoms of the track beams respectively;
and constructing a plurality of supporting pieces, uniformly arranging the supporting pieces between two adjacent abutments of the same track beam, and detachably supporting the supporting pieces at the bottom of the track beam.
11. The method for constructing a roadbed structure according to claim 10, wherein the step of constructing a plurality of piers so that the plurality of piers are arranged at intervals along the extending direction of the track beam and supported at the end of the track beam specifically comprises:
constructing a plurality of cast-in-situ bored piles, wherein the cast-in-situ bored piles are arranged at intervals, and one end, far away from the track beam, of each cast-in-situ bored pile penetrates through the weak stratum and extends into the bearing layer;
constructing a bearing platform at the top ends of the plurality of cast-in-situ bored piles, fixing the bearing platform on the plurality of cast-in-situ bored piles, and reserving the positions of the supports on the bearing platform;
constructing the support at a reserved position on the bearing platform, and fixedly connecting the support with the track beam to complete the construction of a single pier;
and repeating the steps to finish the construction of the plurality of piers, and arranging the plurality of piers at intervals along the extending direction of the track beam.
Technical Field
The invention relates to the technical field of straddle type monorail traffic engineering, in particular to a roadbed structure of a straddle type monorail low-level line and a construction method thereof.
Background
The straddle type monorail is a novel rail transit which is supported, stabilized and guided by a rail beam, and a vehicle body rides on the rail beam to run. The straddle type monorail traffic engineering is built and operated in many places in China due to the advantages of small occupied area, strong climbing and curve capacity, small noise, small landscape influence, large building density adaptability and the like. The straddle type monorail is an important choice for urban rail transit construction, the construction strength of the straddle type monorail is continuously expanded, but the straddle type monorail is mainly in an overhead form basically, the construction cost is high, and the maintenance and the repair are difficult. Therefore, it is necessary to research a roadbed structure of a straddle type monorail low-lying line.
Disclosure of Invention
The invention aims to provide a roadbed structure of a straddle type monorail low-lying line and a construction method thereof, and aims to solve the technical problems that a straddle type monorail in the prior art is mainly overhead, high in manufacturing cost and difficult to maintain.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the invention provides a roadbed structure of a straddle type monorail low-lying line, which comprises a plurality of piers and a plurality of supporting pieces, wherein the piers are used for supporting a track beam of a straddle type monorail; the supporting piece is arranged between every two adjacent abutments of the same track beam, the supporting piece is supported at the bottom of the track beam, and the track beam can be separated from the supporting piece.
Further, a groove is formed on the support, and the bottom of the track beam is wedged into the groove.
Further, the support comprises an auxiliary beam and a connecting plate arranged on the auxiliary beam, the auxiliary beam is laid below the track beam, and a groove is formed in the connecting plate to be wedged into the track beam.
Further, the auxiliary beam is arranged perpendicular to the extending direction of the track beam; and/or grooves are formed at two ends of the connecting plate along the direction perpendicular to the track beams respectively and used for wedging the two track beams.
Furthermore, one supporting piece is arranged between every two adjacent abutments, and the supporting piece is positioned between the two abutments.
Furthermore, the lower part of the support member is buried in the ground, and the thickness of the support member buried in the ground is 1/4-1 of the thickness of the support member.
Further, the pier comprises a bearing platform, a support and a plurality of cast-in-situ bored piles, wherein the cast-in-situ bored piles are used for supporting the bearing platform, the support is arranged on the bearing platform and is fixedly connected with the track beam to support the track beam, the top ends of the cast-in-situ bored piles are supported on the bearing platform, and the bottom ends of the cast-in-situ bored piles penetrate through the weak stratum and then stretch into the bearing layer.
Furthermore, the bearing platform is perpendicular to the extending direction of the track beam, the number of the supporting seats is multiple, and the supporting seats are distributed on the bearing platform at intervals to support the track beams.
Furthermore, the lower part of the bearing platform is embedded in the ground, and the thickness of the bearing platform embedded in the ground is 1/4-1 of the thickness of the bearing platform.
According to another aspect of the invention, a method for constructing a roadbed structure of the straddle type monorail overhead line is further provided, and the method comprises the following steps: constructing a plurality of piers, and arranging the plurality of piers at intervals along the extending direction of the track beam and supporting the plurality of piers at the end part of the track beam; fixedly connecting the plurality of abutments with the bottoms of the track beams respectively; and constructing a plurality of supporting pieces, uniformly arranging the supporting pieces between two adjacent abutments of the same track beam, and detachably supporting the supporting pieces at the bottom of the track beam.
Further, the step of constructing a plurality of abutments to arrange the plurality of abutments at intervals along the extending direction of the rail beam and to support the plurality of abutments on the end of the rail beam specifically includes: constructing a plurality of cast-in-situ bored piles, wherein the cast-in-situ bored piles are arranged at intervals, and one end, far away from the track beam, of each cast-in-situ bored pile penetrates through the weak stratum and extends into the bearing layer; constructing a bearing platform at the top ends of the plurality of cast-in-situ bored piles, fixing the bearing platform on the plurality of cast-in-situ bored piles, and reserving the positions of the supports on the bearing platform; constructing the support at a reserved position on the bearing platform, and fixedly connecting the support with the track beam to complete the construction of a single pier; and repeating the steps to finish the construction of the plurality of piers, and arranging the plurality of piers at intervals along the extending direction of the track beam.
The invention provides a roadbed structure of a straddle type monorail low-lying line.A pier supporting track beam is respectively arranged at two end parts of a track beam and fixedly connected with the pier supporting track beam, and a supporting piece is arranged between two adjacent piers of the same track beam and detachably supported at the bottom of the track beam; the pier and the supporting piece simultaneously bear the load of the track beam and the train on the upper portion of the track beam and transmit the load to the ground, and meanwhile, the supporting piece can control deformation of the track beam, and the structure is stable and reliable. Compared with an overhead structure, the roadbed structure provided by the invention has the advantages that the bridge occupation ratio is reduced, the construction period is shortened, and the investment cost is obviously reduced.
Drawings
Fig. 1 is a schematic cross-sectional structural view of a roadbed structure of a straddle-type monorail low-level line provided by the embodiment of the invention, wherein a track beam and a train are shown;
fig. 2 is a schematic longitudinal sectional view of a roadbed structure of a straddle-type monorail low-lying line provided by the embodiment of the invention, wherein a track beam is shown;
FIG. 3 is a schematic structural view of the support shown in FIG. 2;
fig. 4 is a flowchart of a construction method of a roadbed structure according to an embodiment of the present invention.
Description of reference numerals:
10. a track beam; 20. a train; 50. a weak formation; 60. a support layer; 70. side ditches;
30. pier abutment; 31. a bearing platform; 32. a support; 33. drilling a cast-in-place pile;
40. a support member; 41. an auxiliary beam; 42. a connecting plate; 42a, grooves.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. In the description of the present invention, the relevant orientation or positional relationship is based on the orientation or positional relationship shown in fig. 1, where "up" and "down" refer to the up-down direction of fig. 1. It is to be understood that such directional terms are merely used to facilitate describing the invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must be constructed and operated in a particular orientation and therefore should not be considered as limiting the invention.
Referring to fig. 1 and 2, in a first aspect of the embodiments of the present application, there is provided a roadbed structure of a straddle-type monorail low-lying line, comprising a plurality of
The roadbed structure of this application embodiment lays a plurality of
In addition, on the
In the roadbed structure of the straddle-type monorail low-lying line provided by the embodiment of the application, the
It will be appreciated that the non-fixed connection between the
Wherein the
In the embodiment of the present application, the
It is understood that one or more supporting
In the embodiment of the present application, the supporting
In the embodiment of the present application, whether or not the
In the embodiment of the present application, the bearing
In some embodiments, the bearing
In the embodiment of the present application, the
Referring to fig. 4, in a second aspect of the embodiments of the present application, there is provided a method for constructing a roadbed structure of the straddle-type monorail low-level line, including the following steps: s1, constructing a plurality of
In the embodiment of the present application, the
In some embodiments, the step of constructing the plurality of
In the embodiment of the present application, the cast-in-situ
In some embodiments,
Specifically, the construction method of the roadbed structure in the embodiment of the application comprises the following steps:
1. firstly, side slope excavation and site leveling are carried out, and necessary side slope protection is carried out according to design.
2. Side ditches 70 are respectively constructed on two sides of the position where the
3. The construction of a plurality of cast-in-situ
4. The construction method comprises the steps of constructing a
5. The
6. After the cast-in-situ
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the present invention, and all such changes or substitutions are included in the scope of the present invention. Moreover, the technical solutions in the embodiments of the present invention may be combined with each other, but it is necessary to be able to be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent, and is not within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
- 上一篇:一种医用注射器针头装配设备
- 下一篇:跨座式单轨低置线路的道岔基础结构及其施工方法