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Method for arranging entrance and exit of low-grade road on high-grade road

A high-level, entry-exit technology, applied in the traffic field, can solve the problems of long buffer sections, limited space distance, and difficulty in ensuring safety, and achieve the effect of reducing the length of the passage, saving investment, and ensuring the safety of the intersection.

Pending Publication Date: 2022-05-27
云南省设计院集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although there are similar situations where low-speed roads and express roads intersect, such intersections require a long buffer section, and it is difficult to ensure safety when the space distance is limited and a low-grade road entrance and exit connected with a high-grade road must be opened. , so how to ensure the safety of driving into or out of high-grade highways within a limited space distance is of great significance

Method used

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  • Method for arranging entrance and exit of low-grade road on high-grade road
  • Method for arranging entrance and exit of low-grade road on high-grade road
  • Method for arranging entrance and exit of low-grade road on high-grade road

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Embodiment 1

[0032] A community is surrounded by mountains on three sides, and only one side can be set up with entrances and exits. This side is directly opposite to the expressway. In order to ensure the travel of the community, the entrances and exits must be built. At the same time, because the community is surrounded by mountains on three sides, and there are no surrounding road construction conditions, openings and expressways must be set up. connection. The design speed of the expressway is 80km / h, and the design speed of the entrance and exit of the community is 20km / h. The maximum value of the angle between the entrance and exit road slopes is 4°.

[0033] The opening setting method includes the following steps:

[0034] 1. The design speed of the main line of the road is V1=80km / h, the design speed of the entrance and exit is V2=20km / h, and the angle of the slope is β=4°;

[0035] 2. Calculate the length of the deceleration channel: a 1 Take 5m / s 2 , decelerate uphill, use a ...

Embodiment 2

[0043] The design speed of a certain highway is 100km / h, and there are some villages scattered along the route. A certain village needs to set up openings on the first-class transit road. For details of the opening method, see figure 2 . The design speed of the open road in the village is 30km / h. The maximum value of the angle between the entrance and exit road slopes is 4°.

[0044] The opening setting method includes the following steps:

[0045] 1. The design speed of the main line of the road is V1=100km / h, the design speed of the opening is V2=30km / h, and the included angle of the slope is β=4°:

[0046] 2. Calculate the length of the deceleration channel: a 1 Take 5m / s 2 , decelerate uphill, use a 1 +gsinβ

[0047]

[0048] 3. Calculate the length of the acceleration channel: a 2 Take 2.5m / s 2 , accelerate downhill, use a 2 +gsinβ

[0049]

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Abstract

The invention relates to a method for arranging a low-level road entrance and exit on a high-level road, which belongs to the technical field of traffic and comprises the following steps: arranging an acceleration channel and a deceleration channel at the low-level road vehicle entrance and exit; the acceleration channel and the deceleration channel are respectively connected with the high-grade road connector; and the height difference is calculated according to the longitudinal slope of the acceleration and deceleration channel. Accurate calculation is carried out by combining the vehicle acceleration, the vehicle deceleration and the road longitudinal slope, safe connection between the community vehicle entrance and exit and the high-grade road can be achieved, and the length of the buffer channel can be reduced to a certain extent while the safety of the connection channel is improved; and compared with the existing highway and expressway acceleration and deceleration channel setting method, the channel length is reduced, so that the investment is reduced.

Description

technical field [0001] The invention belongs to the technical field of traffic, and in particular relates to a method for setting low-grade road entrances and exits on high-grade roads. Background technique [0002] For the sake of traffic safety, my country's current regulations stipulate that "the entrances and exits of public buildings that attract a lot of traffic and people should not be set up on both sides of urban expressways". Due to the high speed of expressway, usually 60-100km / h, while the speed of the entrance and exit of the plot is generally lower, usually below 30km / h, a large speed difference can easily cause traffic accidents and threaten driving safety. Therefore, most of my country's urban and rural planning management technical regulations also have similar regulations "opening is strictly prohibited on urban expressways". [0003] However, in reality, due to various reasons such as actual land sale, transfer, planning-construction contradictions, etc.,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C1/00E01C1/02
CPCE01C1/002E01C1/02Y02A30/60
Inventor 杨立柱张富琼赵晓霞李海
Owner 云南省设计院集团有限公司
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