The road structure of highway passing under railway interchange and the method of converting level crossing into interchange
By designing the road structure of the railway interchange under the highway, the problem of construction affecting traffic and land cutting during the reconstruction of the level crossing is solved, and construction does not affect traffic and reduces land cutting, providing more space for the urban area.
Patent Information
- Application Number
- CN202010624269.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2020-07-02
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2040-07-02
AI Technical Summary
In the existing technology, when the intersection between the highway and the railway is converted into a railway interchange under the highway, the existing traffic will be affected during the construction period, and the local land is cut more, which increases the difficulty of reconstruction, especially in dense population and large traffic flow. The city is more difficult.
A road structure for road underpass railway interchange is designed, including underpass overpass and underpass. The underpass overpass is located below the horizontal surface of the railway track, crosses the railway, and maintains a preset distance from the original level crossing road, and underpasses underpass. The section is located below the underpass overpass, and the connecting section is connected to the unrenovated highway to ensure that construction does not affect normal passage and reduce land cutting.
The construction of level crossing to interchange has not affected existing traffic, minimized land cutting, provided more space for surrounding towns, and improved the feasibility and efficiency of reconstruction.
Smart Images
Figure CN111636265B_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the field of railway engineering, and particularly relates to a road structure for a highway to pass under a railway interchange and a method for converting a level crossing into an interchange. Background Art
[0002] Level crossings are the intersections of highways and railways, and are the weak link in my country's railway transportation. With the rapid development of my country's railway industry, level crossings have become a bottleneck restricting the speed increase of railways and the development of local transportation. Existing highway-rail level crossings are gradually being converted into flyovers. There are fewer and fewer highway-rail level crossings, but most of the remaining level crossings are difficult to reconstruct and difficult to implement. In addition, a considerable number of them are located near urban areas and towns with dense populations and heavy traffic, which further increases the difficulty of converting level crossings into flyovers. Existing highway-rail level crossings not only pose safety hazards, but also greatly reduce the efficiency of highway transportation, bringing inconvenience to the production and life of the people. It is imperative to reconstruct the remaining level crossings.
[0003] In the prior art, the reconstruction project of converting a highway-railway level crossing into a highway-underpass railway interchange requires the closure of the existing level crossing for construction, which may affect the existing traffic flow during the construction period, causing obstacles to highway transportation and people's travel. Summary of the invention
[0004] In order to solve the above technical problems, the embodiments of the present invention provide a road structure for a highway to pass under a railway interchange and a method for converting a level crossing into an interchange, which can ensure that the construction of the level crossing to be converted into an interchange does not affect the normal traffic of the existing level crossing, while minimizing the cutting of local land and providing more space for the development of surrounding towns.
[0005] In order to achieve the above purpose, the technical solution adopted by the embodiment of the present invention is as follows:
[0006] In a first aspect, an embodiment of the present invention provides a road structure in which a highway passes under a railway interchange, including a railway, an unmodified highway, an underpass converted from a highway-railway level crossing, and an underpass highway consisting of an underpass section and a connecting section; wherein:
[0007] The underpass is located below the horizontal plane of the railroad and crosses the railroad, and has a preset distance from the highway at the original level crossing;
[0008] The underpass section of the underpass highway is located below the underpass flyover;
[0009] The underpass highway connecting section, the connecting section and the underpass section are connected to the unreconstructed highway.
[0010] Preferably, the preset distance between the road passing under the overpass and the original level crossing is 20m to 30m along one side of the railway axis.
[0011] Preferably, the connecting section of the underpass road is connected to the unmodified road, and the connecting section is two sections connected to both ends of the underpass section, and each section is composed of two reverse curves connected.
[0012] Preferably, the connecting section and the underpass section of the underpass are connected to the unreconstructed road, the connecting section is a section composed of two reverse curves, one end of which is connected to the unreconstructed road and the other end is connected to the underpass section, and the other end of the underpass section is connected to the unreconstructed road on the other side of the level crossing.
[0013] Preferably, the slopes of the approach roads on both sides of the underpass are the maximum longitudinal slopes required by the technical requirements for highways of corresponding grades.
[0014] Preferably, the underpass highway connection section is formed by connecting two reverse curves whose curve radius is the minimum curve radius required by the technical requirements of the highway of the corresponding grade.
[0015] Preferably, the intersection angle between the underpass section of the underpass road and the railway is 45° to 90°.
[0016] In a second aspect, an embodiment of the present invention further provides a method for converting a level crossing into an overpass, the method comprising the following steps:
[0017] Step S1, setting the underpass below the horizontal plane of the rail and crossing the railroad, and having a preset distance from the highway at the original level crossing;
[0018] Step S2, setting the underpass section of the underpass highway below the underpass overpass;
[0019] Step S3, connecting the connecting section of the underpass road to the unreconstructed road, wherein the connecting section is two sections connected to both ends of the underpass section; or connecting the connecting section and the underpass section of the underpass road to the unreconstructed road, wherein the connecting section is one section, one end of the connecting section is connected to the unreconstructed road, and the other end is connected to the underpass section, and the other end of the underpass section is connected to the unreconstructed road on the other side of the level crossing.
[0020] Preferably, the underpass road connection section is configured to be composed of two reverse curves connected.
[0021] Preferably, the preset distance between the road passing under the overpass and the original level crossing is set to 20 to 30 m on one side along the railway axis.
[0022] The present invention has the following beneficial effects:
[0023] The road structure of a highway under a railway interchange and the method for converting a level crossing into an interchange provided in the embodiments of the present invention, the road structure includes a railway, an unconverted highway, an underpass converted from a highway-railway level crossing, and an underpass highway consisting of an underpass section and a connecting section; the underpass highway is located below the horizontal plane of the rails and intersects the railway, and has a preset distance from the highway at the original level crossing; the underpass section of the underpass highway is located below the underpass highway; the connecting section of the underpass highway is connected to the unconverted highway. The embodiments of the present invention ensure that the construction of converting a level crossing into an interchange does not affect the normal traffic of the existing level crossing, does not hinder highway transportation and public travel, and at the same time minimizes the cutting of local land, providing more space for the development of surrounding towns. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.
[0025] Figure 1 It is a schematic plan view of a road structure (the railway and the unmodified road intersect vertically) of a road under a railway interchange according to a first embodiment of the present invention;
[0026] Figure 2 It is a schematic plan view of a road structure (the railway and the unmodified road are obliquely intersected) of a highway under a railway interchange according to a second embodiment of the present invention;
[0027] Description of reference numerals:
[0028] 1. Railway; 2. Unrenovated highway; 3. Highway-railway level crossing; 4. Underpass of highway; 41. Underpass section; 42. Connecting section; 5. Underpass overpass. DETAILED DESCRIPTION
[0029] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.
[0030] Embodiment 1:
[0031] This embodiment discloses a road structure in which a highway passes under a railway interchange. Considering that vertical intersections or near-vertical intersections between railways and highways are common, the vertical intersection of railway 1 and unmodified highway 2 is taken as an example and described in detail with reference to the fourth-class highway standard. Figure 1As shown, it includes a railway 1, an unmodified highway 2, an underpass 5 transformed from a highway-railway level crossing 3, and an underpass highway 4 composed of an underpass section 41 and a connecting section 42; wherein the underpass 5 is located below the horizontal plane of the rails and crosses the railway 1, and the preset distance from the highway at the original level crossing 3 is 20m axially displaced along the railway 1. The underpass section 41 of the underpass highway 4 is located below the underpass 5, below the railway 1 and vertically crosses the railway 1; the connecting section 42 of the underpass highway 4 is connected to the unmodified highway 2, and the connecting section 42 is two sections connected to both ends of the underpass section 41, and each connecting section 42 is composed of two reverse curves with a curve radius of 30m. The height below the bottom of the underpass 5 is 5m, and the elevation from the bottom of the underpass 5 to the track surface of the railway 1 is 1.2m. The slope of the underpass road 4 is 8%, and the length of the underpass road 4 on both sides is (5m+1.2m) / 8%=77.5m.
[0032] This embodiment also provides a method for converting a level crossing into an overpass, to achieve the above-mentioned road structure where the highway passes under the railway overpass. The method for converting a level crossing into an overpass comprises the following steps:
[0033] Step S1, setting the underpass 5 below the horizontal plane of the rails and crossing the railway 1, and having a preset distance from the highway of the original level crossing 3;
[0034] Step S2, setting the underpass section of the underpass highway 4 below the underpass overpass 5;
[0035] Step S3, connecting the connecting section 42 of the underpass road 4 to the unmodified road 2, wherein the connecting section 42 is two sections connected to both ends of the underpass section 41.
[0036] Further, step S1 is specifically as follows: the net height of the underpass 5 is set to 5m below the bottom of the underpass 5, and the elevation from the bottom of the underpass 5 to the track surface of the railway 1 is set to 1.2m. The underpass 5 is set below the horizontal plane of the rail and crosses the railway 1, and the preset distance from the highway of the original level crossing 3 is set to 20m lateral displacement along the axial direction of the railway 1;
[0037] Further, step S2 specifically includes: setting the underpass section 41 of the underpass highway 4 below the underpass overpass 5, with the intersection angle with the railway 1 being 90°;
[0038] Further, step S3 specifically includes: connecting the connection section 42 of the underpass road 4 to the unmodified road 2, the connection section 42 is two sections connected to the two ends of the underpass section 41, and the two connection sections 42 of the underpass road 4 are both set to be composed of two reverse curves with a curve radius of 30m. The slope of the approach road of the underpass road 4 is set to 8%, and the length of the approach roads on both sides of the underpass road 4 is set to (5m+1.2m) / 8%=77.5m.
[0039] It can be seen from the above technical solutions that the road structure of the highway passing under the railway interchange and the method of converting the level crossing into an interchange provided in this embodiment can ensure that the construction of the level crossing into an interchange does not affect the normal traffic of the existing level crossing, and will not cause obstacles to road transportation and people's travel. At the same time, it minimizes the cutting of local land and provides more space for the development of surrounding towns.
[0040] Embodiment 2:
[0041] This embodiment discloses a road structure in which a highway passes under a railway interchange. Taking the oblique intersection of a railway 1 and an unreconstructed highway 2 as an example, the structure is described in detail with reference to the fourth-class highway standard. Figure 2 As shown, it includes a railway 1, an unmodified highway 2, an underpass 5 modified from a highway-railway level crossing 3, and an underpass highway 4 composed of an underpass section 41 and a connecting section 42; wherein the underpass 5 is located below the horizontal plane of the rails and crosses the railway 1, and the preset distance from the highway at the original level crossing 3 is 20m on one side along the axis of the railway 1. The underpass section of the underpass highway 4 is located below the underpass 5, and vertically crosses the railway 1 below the railway 1; the connecting section 42 and the underpass section 41 of the underpass highway 4 are connected to the unmodified highway 2, and the connecting section 42 is a section composed of two reverse curves with a curve radius of 30m, one end of which is connected to the unmodified highway 2, and the other end is connected to the underpass section 41, and the other end of the underpass section 41 is connected to the unmodified highway 2 on the other side of the level crossing 3. The height below the bottom of the underpass 5 is 5m, and the elevation from the bottom of the underpass 5 to the track surface of the railway 1 is 1.2m. The slope of the underpass road 4 is 8%, and the length of the underpass road 4 on both sides is (5m+1.2m) / 8%=77.5m.
[0042] This embodiment also provides a method for converting a level crossing into an overpass, so as to realize the above-mentioned road structure of the highway passing under the railway overpass. The method for converting a level crossing into an overpass comprises the following steps:
[0043] Step S1, setting the underpass 5 below the horizontal plane of the rails and crossing the railway 1, and having a preset distance from the highway of the original level crossing 3;
[0044] Step S2, setting the underpass section 41 of the underpass highway 4 below the underpass overpass 5;
[0045] Step S3, connecting the connecting section 42 and the underpass section 41 of the underpass road 4 to the unreconstructed road 2, wherein the connecting section 42 is a section, one end of the connecting section 42 is connected to the unreconstructed road 2, and the other end is connected to the underpass section 41, and the other end of the underpass section 41 is connected to the unreconstructed road 2 on the other side of the level crossing 3.
[0046] Further, step S1 is specifically as follows: the net height of the underpass 5 is set to 5m below the bottom of the underpass 5, and the elevation from the bottom of the underpass 5 to the track surface of the railway 1 is set to 1.2m. The underpass 5 is set below the horizontal plane of the rail and crosses the railway 1, and the preset distance from the highway of the original level crossing 3 is set to 20m on one side along the axis of the railway 1;
[0047] Further, step S2 specifically includes: setting the underpass section 41 of the underpass highway 4 below the underpass overpass 5, with the intersection angle with the railway 1 being 90°;
[0048] Further, step S3 is specifically as follows: connecting the connecting section 42 and the underpass section 41 of the underpass road 4 to the unmodified road 2, the connecting section 42 is a section, one end of the connecting section 42 is connected to the unmodified road 2, and the other end is connected to the underpass section 41, the other end of the underpass section 41 is connected to the unmodified road 2 on the other side of the level crossing 3, and the connecting section 42 of the underpass road 4 is composed of two reverse curves with a curve radius of 30m. The slope of the approach road of the underpass road 4 is set to 8%, and the length of the approach roads on both sides of the underpass road 4 is set to (5m+1.2m) / 8%=77.5m.
[0049] It can be seen from the above technical solutions that the road structure of the highway passing under the railway interchange and the method of converting the level crossing into an interchange provided in this embodiment ensure that the construction of the level crossing into an interchange does not affect the normal traffic of the existing level crossing, and will not cause obstacles to road transportation and people's travel. At the same time, it minimizes the cutting of local land and provides more space for the development of surrounding towns.
[0050] The present invention has been described in detail above through embodiments, but the contents described are only exemplary embodiments of the present invention and cannot be considered to limit the scope of implementation of the present invention. The protection scope of the present invention is defined by the claims. Anyone who utilizes the technical solution described in the present invention, or a technician in the field, inspired by the technical solution of the present invention, designs a similar technical solution within the essence and protection scope of the present invention to achieve the above technical effects, or makes equal changes and improvements to the scope of application, etc., shall still fall within the scope of protection covered by the patent of the present invention.
Claims
1. A road structure where a highway passes under a railway interchange, characterized in that: The road structure includes railways, unmodified highways, underpasses transformed from road-rail level crossings, and underpasses consisting of underpass sections and connecting sections; The underpass is located below the horizontal plane of the railroad and crosses the railroad, and has a preset distance from the highway at the original level crossing; The underpass section of the underpass highway is located below the underpass flyover; The underpass road connection section and the underpass section are connected to the unmodified road, or the underpass road connection section is connected to the unmodified road, and the connection section is two sections connected to both ends of the underpass section; The preset distance between the highway under the overpass and the original level crossing is 20m to 30m along one side of the railway axis; The slope of the approach roads on both sides of the underpass is the maximum longitudinal slope required by the technical requirements of roads of corresponding grades.
2. A road structure for a highway passing under a railway interchange according to claim 1, characterized in that: The connecting section of the underpass road is connected to the unmodified road. The connecting section is two sections connected to both ends of the underpass section, and each section is composed of two reverse curves connected.
3. The road structure of a highway passing under a railway interchange according to claim 1, characterized in that: The connecting section and the underpass section of the underpass are connected to the unreconstructed road. The connecting section is a section composed of two reverse curves, one end of which is connected to the unreconstructed road and the other end is connected to the underpass section. The other end of the underpass section is connected to the unreconstructed road on the other side of the level crossing.
4. The road structure of a highway passing under a railway interchange according to claim 1, characterized in that: The underpass highway connection section is formed by connecting two reverse curves whose curve radius is the minimum curve radius required by the technical requirements of highways of corresponding grades.
5. The road structure of a highway passing under a railway interchange according to claim 1, characterized in that: The intersection angle between the underpass section of the underpass highway and the railway is 45° to 90°.
6. A method for converting a level crossing into an overpass, characterized in that Using a road structure according to any one of claims 1 to 5 in which a highway passes under a railway interchange, the method comprises the following steps: Step S1, setting the underpass below the horizontal plane of the rail and crossing the railroad, and having a preset distance from the highway at the original level crossing; Step S2, setting the underpass section of the underpass highway below the underpass overpass; Step S3, connecting the connecting section of the underpass road to the unreconstructed road, wherein the connecting section is two sections connected to both ends of the underpass section; or connecting the connecting section and the underpass section of the underpass road to the unreconstructed road, wherein the connecting section is one section, one end of the connecting section is connected to the unreconstructed road, and the other end is connected to the underpass section, and the other end of the underpass section is connected to the unreconstructed road on the other side of the level crossing.
7. The method for converting a level crossing into an overpass according to claim 6, characterized in that: The underpass road connection section is configured to be composed of two reverse curves connected.
8. The method for converting a level crossing into an overpass according to claim 6, characterized in that: The preset distance between the highway passing under the overpass and the original level crossing is set to 20 to 30 m on one side of the railway axis.