Method and system for determining opening width of logistics plot based on connecting road

Abstract

The present application relates to a logistics plot opening width determination method and system based on connected roads, according to the red line width of the external road connected with the plot, the road cross section and the size of the vehicle entering and leaving the plot, different cases are divided to determine the specific size of the plot opening width, compared with the current selected range value, the value is more scientific, the most suitable plot opening width size can be determined according to different planning requirements, not only can ensure that the large truck can pass smoothly, but also can not occupy too much land area, balance between plot utilization rate and vehicle passing safety.

Description

Technical Field

[0001] This invention relates to the field of transportation planning technology, specifically to a method and system for determining the opening width of logistics plots based on connecting roads. Background Technology

[0002] The statements in this section are merely background information related to the present invention and do not necessarily constitute prior art.

[0003] In the early planning stage, logistics areas are presented in the form of plots of land. Each plot typically has at least one entrance / exit connecting to external roads. The width of these entrances / exits needs to accommodate the straight-ahead and turning requirements of logistics vehicles, ensuring that they can enter the plot from external roads. Since logistics vehicles are usually heavy-duty trucks with long bodies, sufficient space is required to meet their turning needs. The width of the plot's entrances / exits provides turning space for vehicles when entering the plot from external roads via turning points, or when exiting the external roads from the plot's openings.

[0004] Currently, the width requirement for the entrances and exits of a plot of land is a range value, which is usually determined based on one-way or two-way traffic conditions and the number of lanes. When selecting the range value during the specific construction stage, it is easy to have problems with the opening width being too wide or too narrow. If it is too wide, it will affect the intensive use of land and the operation of connecting urban roads and facilities. If it is too narrow, it will not be able to meet the turning radius of large trucks, which will easily lead to traffic accidents. Summary of the Invention

[0005] To address the technical problems mentioned above, this invention provides a method and system for determining the opening width of logistics plots based on connecting roads, which utilizes the width of the road boundary line connecting the plots, the road cross-section, and the dimensions of vehicles entering and exiting the plots for setting.

[0006] To achieve the above objectives, the present invention employs the following technical embodiments:

[0007] The first aspect of the present invention provides a method for determining the opening width of a logistics plot based on connecting roads, comprising the following steps:

[0008] Determine the road cross-section form, obtain the dimensions of each lane in the road and the vehicle parameters for entering and exiting the plot, and determine the inner turning radius r of the vehicle when entering or exiting the plot from the outside road, and the distance W between the outer side of the vehicle and the road red line.

[0009] If W≥r, then the width of the plot opening is the sum of the width of the external road and twice the inner turning radius r;

[0010] If W < r, the width of the plot opening is determined based on the distance between the lane edge and the road red line when the vehicle turns, as well as the turning radius r.

[0011] Furthermore, the width of the external road is determined according to the following formula:

[0012]

[0013] In the above formula, W R Where L is the required road width, C is the wheelbase between the front and rear axles of the vehicle, d is the front overhang of the vehicle, R is the minimum turning radius on the outside, r is the minimum turning radius on the inside, and 0.5 is the width of the outer seat belt or curb strip.

[0014] Furthermore, the minimum turning radius r on the inner side is determined according to the following formula:

[0015]

[0016] In the above formula, 0.5 represents the width of the external seat belt or curb strip.

[0017] Furthermore, the distance W between the outer edge of the vehicle and the road red line is determined according to the following formula:

[0018] W = W g +W p +W b +W s +n·W m ;

[0019] In the formula, W R For the required road width, W g To reduce the width of the green line, W p W is the width of the sidewalk. b W is the width of the non-motorized vehicle lane. s W is the width of the separation zone between motor vehicles and non-motor vehicles. m denoted as the width of a single motor vehicle lane, and n as the number of outer lanes for turning vehicles.

[0020] Furthermore, if W ≥ r, then the width of the plot opening is the sum of the width of the external road and twice the inner turning radius r; specifically: the width of the plot opening or the width of the median strip opening is W R +2r, symmetrically set on both sides along the center line of the plot entrance and exit.

[0021] Furthermore, if W < r, the width of the plot opening is determined based on the distance between the lane edge and the road red line when the vehicle turns, and the turning radius r; including:

[0022] The width of the opening for the motor vehicle lane in the plot is W. R +r', where Symmetrically arranged on both sides along the center line of the entrance and exit;

[0023] Within the plot, the width of the opening in the road or the median strip is... They are symmetrically arranged on both sides along the center line of the entrance and exit.

[0024] A second aspect of the present invention provides a system for implementing the above-described method, comprising:

[0025] The data acquisition module is configured to: determine the road cross-section form, obtain the dimensions of each lane in the road and the vehicle parameters for entering and exiting the plot, determine the inner turning radius r of the vehicle when entering or exiting the plot from the outside road, and the distance W between the outer side of the vehicle and the road red line;

[0026] The width data output module is configured such that if W≥r, the width of the plot opening is the sum of the width of the external road and twice the inner turning radius r.

[0027] The width data output module is also configured such that if W < r, the width of the plot opening is determined based on the distance between the lane edge and the road red line and the turning radius r when the vehicle turns.

[0028] A third aspect of the present invention provides a computer-readable storage medium.

[0029] A computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps in the method for determining the opening width of a logistics plot based on connecting roads as described above.

[0030] A fourth aspect of the present invention provides a computer device.

[0031] A computer device includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the steps in the method for determining the opening width of a logistics plot based on connecting roads as described above.

[0032] Compared with the prior art, one or more of the above technical embodiments have the following beneficial effects:

[0033] Based on the width of the external road boundary line connecting to the plot, the road cross-section, and the size of vehicles entering and exiting the plot, the specific dimensions of the plot opening width are determined according to different situations. Compared with the currently selected range values, the values ​​are more scientific and can determine the most suitable plot opening width dimensions according to different planning needs. This ensures that large trucks can pass smoothly without occupying too much land area, achieving a balance between plot utilization and vehicle traffic safety. Attached Figure Description

[0034] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0035] Figure 1 A schematic diagram illustrating the process of determining the opening width of a logistics plot based on connecting roads, provided for one or more embodiments of the present invention;

[0036] Figure 2 A schematic diagram showing the location of each lane at the opening of a logistics plot, provided for one or more embodiments of the present invention;

[0037] Figure 3 This is a schematic diagram of the turning radius of a vehicle in a lane provided in one or more embodiments of the present invention;

[0038] Figure 4 This is a schematic diagram illustrating a turning vehicle whose right profile is greater than the road red line in one or more embodiments of the present invention;

[0039] Figure 5 This is a schematic diagram illustrating a scenario where the distance along the actual road red line of a motor vehicle road is greater than the turning radius of a vehicle, provided for one or more embodiments of the present invention.

[0040] Figure 6 A schematic diagram of the width of the opening red line of a logistics plot provided for one or more embodiments of the present invention;

[0041] Figure 7 A schematic diagram of vehicle dimensions provided for one or more embodiments of the present invention;

[0042] Figure 8 A schematic diagram of a vehicle turning trajectory in an opening of a logistics plot, provided for one or more embodiments of the present invention. Detailed Implementation

[0043] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0044] It should be noted that the following detailed descriptions are exemplary and intended to provide further illustration of the invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0045] As described in the background section, excessively narrow entrances and exits directly impact the efficiency and safety of vehicles entering and exiting the site, while excessive width hinders intensive land use and affects the operation of connecting urban roads and infrastructure. The size of vehicles entering and exiting the site must be considered; otherwise, large vehicles may repeatedly turn back and forth, occupying multiple lanes, thus affecting road traffic flow and reducing traffic safety and efficiency. The length of the approach roads to the site entrances and exits also affects the safety and efficiency of vehicle access, as well as the land use efficiency, potentially leading to disorderly operation or vehicle weaving.

[0046] Therefore, the following embodiments provide a method and system for determining the opening width of logistics plots based on connecting roads, which is set based on the red line width of the connecting roads, the road cross-section, and the size of vehicles entering and exiting the plots.

[0047] Example 1:

[0048] like Figures 1-8 As shown, the method for determining the opening width of a logistics plot based on connecting roads includes the following steps:

[0049] Determine the road cross-section form, obtain the dimensions of each lane in the road and the vehicle parameters for entering and exiting the plot, and determine the inner turning radius r of the vehicle when entering or exiting the plot from the outside road, and the distance W between the outer side of the vehicle and the road red line.

[0050] If W ≥ r, then the width of the plot opening is the sum of the width of the outer road and twice the inner turning radius r. That is, the plot opening is designed with a separation strip between motorized and non-motorized lanes based on the vehicle traffic width, and the separation strip is designed with the traffic width plus twice the radius r.

[0051] If W < r, then the width of the plot opening is determined based on the distance between the lane edge and the road red line when a vehicle turns, as well as the turning radius r. That is, the width of the plot opening and the width of the median strip opening are calculated based on the distance between the lane edge and the road red line when a vehicle turns, and the turning radius.

[0052] Specifically:

[0053] Step 1: Determine the cross-sectional shape of the road and the width of each structural element (also known as a component) within the road.

[0054] like Figure 2 As shown, these are the widths W of the green line. g Sidewalk width W p Non-motorized vehicle lane width W b The width of the non-motorized vehicle separation strip W s The width of a single motor vehicle lane is W m The number of outer lanes for turning vehicles is n (n≥0), and the road red line is the boundary line between the external road and the land parcel.

[0055] Step 2: Determine the maximum vehicle parameters and turning radius for entering and exiting the plot.

[0056] like Figure 3 As shown, L - wheelbase of the vehicle's front and rear axles (m); C - front overhang of the vehicle (m); d - vehicle width (m); W R - Required road width (m); R - Minimum turning radius on the outside (m); r - Minimum turning radius on the inside (m).

[0057] Required road width W R As shown in the following formula:

[0058]

[0059] In the above formula, 0.5 represents the width (m) of the external seat belt (curb strip) of the vehicle body;

[0060]

[0061] In the above formula, 0.5 represents the width (m) of the external seat belt (curb strip) of the vehicle body;

[0062] Step 3: Case 1, such as Figure 4 As shown, the distance from the right profile of a turning vehicle to the road red line is not less than the vehicle's turning radius, i.e., W ≥ r, where W = W g +W p +W b +W s +n·W m If the opening width of the plot is greater than or equal to W R The width of the opening in the road or non-motorized vehicle separation strip is W. R +2r, symmetrically set on both sides along the center line of the entrance and exit.

[0063] Step 4: Scenario 2, such as Figure 5 As shown, the distance of the motor vehicle road along the actual road red line is greater than the vehicle's turning radius, i.e., W < r, where W = W g +W p +W b +W s +n·W m The width of the opening for the motor vehicle lane on the plot is W. R +r′, where The width of the opening in the road or non-motorized vehicle separation strip is They are symmetrically arranged on both sides along the center line of the entrance and exit.

[0064] Calculation example.

[0065] The width of the right-of-way, the width of the motor vehicle lane, the width of the slow lane, the width of the pedestrian lane, and the width of the setback line of the road connecting the entrance and exit of the plot should be clearly defined;

[0066] In this embodiment, as Figure 6 As shown, the road cross-section consists of a two-way four-lane road (14.5 meters wide), a non-motorized vehicle lane (3.5 meters wide), and a sidewalk (3 meters wide), with a 10-meter-wide green line.

[0067] Determine the type and size of vehicles entering and exiting the plot, and select the largest vehicle among those entering and exiting the plot based on the principle of meeting the most unfavorable conditions.

[0068] In this embodiment, the following is selected: Figure 7 The vehicle dimensions are shown.

[0069] Select the basic data for the plot opening, namely the default opening width and the default turning radius.

[0070] In this embodiment, the opening width of the plot is selected as 7 meters (3.5 meters * 2) for two-way two-lane roads, and the turning radius is selected as 15 meters.

[0071] Based on the basic data, the vehicle trajectories of vehicles entering and leaving the plot are analyzed. The requirements for vehicles entering and leaving the plot are as follows: vehicles entering from the right can smoothly enter the plot in the innermost lane, vehicles exiting from the right can not encroach on the opposite lane, vehicles entering from the left can smoothly enter the plot in the outermost lane, and vehicles exiting from the left can smoothly enter the outermost lane.

[0072] Based on the vehicles entering and exiting the plot, the largest vehicle is selected as the calculation vehicle. The space swept by the vehicle trajectory is the minimum space size requirement for the plot opening. Using the Autoturn software, we analyze and calculate the turning radius and required space for each vehicle type to enter and exit smoothly in one go, which is the minimum space required for entry and exit.

[0073] The width of the site opening is determined based on the requirements for smooth vehicle turning. The site opening width is 14.64 meters, so we take 15 meters. The road opening width is 42.59 meters, so we take 43 meters. Figure 8 As shown.

[0074] The above process determines the specific dimensions of the plot opening width based on the width of the external road boundary line connecting to the plot, the road cross-section, and the size of vehicles entering and exiting the plot, categorizing different situations.

[0075] Currently, the opening width of the land parcel is set based on the minimum turning radius corresponding to the length and speed limit of different vehicles. The minimum turning radius is defined as the radius of the circle traced by the center of the outer steering wheel on the supporting plane. In actual operation, even when the turning radius is met, large trucks and trailers, due to their large front overhang length and track width, sweep an area larger than the minimum turning radius area during turning. Furthermore, there is no constraint on the inner radius of the swept area. Therefore, in actual operation, setting the width based on the minimum turning radius range can lead to problems such as vehicles being unable to enter or exit in one go, occupying oncoming lanes, hindering road traffic efficiency, reducing land parcel access efficiency, and increasing traffic safety hazards.

[0076] The method proposed in this plan is more scientific than the currently selected range values, and it can achieve coordinated feedback between road width and plot opening width. It has strong practical significance to take into account the plot, road setback line, and road red line width in the urban planning and road planning stages. It can determine the most suitable plot opening width according to different planning needs, which can ensure that large trucks can pass smoothly without occupying too much land area, and achieve a balance between plot utilization and vehicle traffic safety.

[0077] Example 2:

[0078] A system for determining the opening width of logistics plots based on connecting roads includes:

[0079] The data acquisition module is configured to: determine the road cross-section form, obtain the dimensions of each lane in the road and the vehicle parameters for entering and exiting the plot, determine the inner turning radius r of the vehicle when entering or exiting the plot from the outside road, and the distance W between the outer side of the vehicle and the road red line;

[0080] The width data output module is configured such that if W≥r, the width of the plot opening is the sum of the width of the external road and twice the inner turning radius r.

[0081] The width data output module is also configured such that if W < r, the width of the plot opening is determined based on the distance between the lane edge and the road red line and the turning radius r when the vehicle turns.

[0082] Based on the width of the external road boundary line connecting to the plot, the road cross-section, and the size of vehicles entering and exiting the plot, the specific dimensions of the plot opening width are determined according to different situations. Compared with the currently selected range values, the values ​​are more scientific and can determine the most suitable plot opening width dimensions according to different planning needs. This ensures that large trucks can pass smoothly without occupying too much land area, achieving a balance between plot utilization and vehicle traffic safety.

[0083] Example 3:

[0084] This embodiment provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps in the method for determining the opening width of a logistics plot based on connecting roads as described in Embodiment 1 above.

[0085] Based on the width of the external road boundary line connecting to the plot, the road cross-section, and the size of vehicles entering and exiting the plot, the specific dimensions of the plot opening width are determined according to different situations. Compared with the currently selected range values, the values ​​are more scientific and can determine the most suitable plot opening width dimensions according to different planning needs. This ensures that large trucks can pass smoothly without occupying too much land area, achieving a balance between plot utilization and vehicle traffic safety.

[0086] Example 4:

[0087] This embodiment provides a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, it implements the steps in the method for determining the opening width of a logistics plot based on connecting roads as described in Embodiment 1 above.

[0088] Based on the width of the external road boundary line connecting to the plot, the road cross-section, and the size of vehicles entering and exiting the plot, the specific dimensions of the plot opening width are determined according to different situations. Compared with the currently selected range values, the values ​​are more scientific and can determine the most suitable plot opening width dimensions according to different planning needs. This ensures that large trucks can pass smoothly without occupying too much land area, achieving a balance between plot utilization and vehicle traffic safety.

[0089] The steps or modules involved in Embodiments 2 to 4 above correspond to those in Embodiment 1. For specific implementation details, please refer to the relevant description section of Embodiment 1. The term "computer-readable storage medium" should be understood as a single medium or multiple media including one or more instruction sets; it should also be understood as including any medium capable of storing, encoding, or carrying an instruction set for execution by a processor and enabling the processor to perform any of the methods in this invention.

[0090] The steps or networks involved in Embodiments 2 to 4 above correspond to those in Embodiment 1. For specific implementation details, please refer to the relevant description section of Embodiment 1. The term "computer-readable storage medium" should be understood as a single medium or multiple media including one or more instruction sets; it should also be understood as including any medium capable of storing, encoding, or carrying an instruction set for execution by a processor and enabling the processor to perform any of the methods in this invention.

Claims

1. A method for determining the opening width of logistics plots based on connecting roads, characterized in that, Includes the following steps: Determine the road cross-section, obtain the dimensions of each lane and vehicle parameters for entering and exiting the site, and determine the inner turning radius of vehicles entering and exiting the site from external roads. r and the distance between the outer edge of the vehicle and the road red line. W ; like W ≥ r The opening width of the plot is then equal to the required road width and twice the inner turning radius. r sum; like W < r The width of the plot opening is determined by the distance between the lane edge and the road red line when a vehicle turns, as well as the turning radius. r Determined, including: Within the plot, the openings for motor vehicle lanes are symmetrically arranged on both sides along the center line of the entrance and exit, and the opening widths are shown in the following formula; W R +r’ ,in ; In the formula, W R For the required road width, r The minimum turning radius on the inside; Also includes: Within the plot, openings in the road or non-motorized vehicle separation strip are symmetrically arranged on both sides along the centerline of the entrance / exit, with the opening widths shown in the following formula: ； In the formula, W R For the required road width, r The minimum turning radius on the inside. W m The width of a single motor vehicle lane. n This refers to the number of lanes outside the turning lanes for motor vehicles.

2. The method for determining the opening width of a logistics plot based on connecting roads as described in claim 1, characterized in that, The required road width is determined by the following formula: +0.5 ； In the above formula, W R For the required road width, L This refers to the wheelbase between the front and rear axles of the vehicle. C For the front suspension of the vehicle. d For vehicle width, r 0.5 represents the minimum turning radius on the inside, and 0.5 represents the width of the outer seat belt or curb.

3. The method for determining the opening width of a logistics plot based on connecting roads as described in claim 1, characterized in that, The minimum turning radius r on the inner side is determined by the following formula: ； In the above formula, W R For the required road width, L This refers to the wheelbase between the front and rear axles of the vehicle. C For the front suspension of the vehicle. d 0.5 represents the width of the vehicle, and 0.5 represents the width of the exterior seat belt or curb strip.

4. The method for determining the opening width of a logistics plot based on connecting roads as described in claim 3, characterized in that, The distance W between the outer edge of the vehicle and the road red line is determined by the following formula: W=W g +W p +W b +W s +n·W m ； In the formula, W g To reduce the width of the green line, W p The width of the sidewalk W b This refers to the width of the non-motorized vehicle lane. W s The width of the separation strip between motor vehicles and non-motor vehicles. W m The width of a single motor vehicle lane. n This refers to the number of lanes outside the turning lanes for motor vehicles.

5. The method for determining the opening width of a logistics plot based on connecting roads as described in claim 1, characterized in that, like W ≥ r The opening width of the plot is then equal to the required road width and twice the minimum inner turning radius. r The sum; specifically: The width of the plot opening or the width of the separation strip between motorized and non-motorized lanes are as follows: , W R The required road width is symmetrically set on both sides of the center line of the plot entrance and exit.

6. A system for determining the opening width of logistics plots based on connecting roads, characterized in that, include: The data acquisition module is configured to: determine the road cross-section, acquire the dimensions of each lane in the road and vehicle parameters for entering and exiting the land parcel, and determine the inner turning radius of vehicles entering and exiting the land parcel from external roads. r and the distance between the outer edge of the vehicle and the road red line. W ; The width data output module is configured as follows: W ≥ r The opening width of the plot is then equal to the required road width and twice the inner turning radius. r sum; The width data output module is also configured to: if W < r The width of the plot opening is determined by the distance between the lane edge and the road red line when a vehicle turns, as well as the turning radius. r Determined, including: Within the plot, the openings for motor vehicle lanes are symmetrically arranged on both sides along the center line of the entrance and exit, and the opening widths are shown in the following formula; W R +r’ ,in ; In the formula, W R For the required road width, r The minimum turning radius on the inside; Also includes: Within the plot, openings in the road or non-motorized vehicle separation strip are symmetrically arranged on both sides along the centerline of the entrance / exit, with the opening widths shown in the following formula: ； In the formula, W R For the required road width, r The minimum turning radius on the inside. W m The width of a single motor vehicle lane. n This refers to the number of lanes outside the turning lanes for motor vehicles.

7. A computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the method for determining the opening width of a logistics plot based on connecting roads as described in any one of claims 1-5.

8. A computer device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the program, it implements the steps in the method for determining the opening width of a logistics plot based on connecting roads as described in any one of claims 1-5.

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