Determination method for minimum chamfer value of red lines of road intersection

Abstract

The invention discloses a determination method for a minimum chamfer value of red lines of a road intersection. The determination method comprises the following steps: determining a right-angle vertex A of a sight distance triangle; calculating safe parking sight distances of a first straight movement motor vehicle lane which is closest to the central line on a right side transverse road, and a straight movement motor vehicle lane which is closest to the right side of a vertical road, and rounding up calculating results up to integers to obtain safe parking sight distances adopted values S1 and S2 of the two motor vehicle lanes; constructing the sight distance triangle; calculating the minimum chamfer value of a direction red line of the intersection; and taking the maximum value of the four directions as the minimum chamfer value of the whole intersection red line. According to the determination method, the minimum chamfer value of the red lines of the sight distance triangle is utilized for making up of the vacancy of a specific evaluation method of the red line chamfer by existing specifications; and the intersection occupied area can be reasonably planned under the condition of guaranteeing the safety, and the utilization efficiency of urban road land resources is improved.

Description

technical field [0001] The invention belongs to the field of road design in urban municipal and traffic planning, and particularly relates to a method of using a safe parking sight distance triangle model to perform unified processing and calculation of the minimum cut angle value of the red line of the intersection, so as to obtain different road level intersections that meet the requirements of motor vehicles. Calculation process and method of the minimum cut angle value of the intersection red line under the requirement of safe driving. Background technique [0002] The red line planning of road sections and intersections is an important part of urban planning and road planning and design. The red line is the dividing line between urban road land and other land uses. The redline of the road intersects at the same time as the road intersects the road at the level intersection. On the road section, the road range is controlled by the road boundary line, which includes: the...

AI Technical Summary

Problems solved by technology

There are many studies on the width of the red line and the principle of value selection in relevant theoretical research, but there is almost no research on the cut angle of the red line at the intersection and the scale of the intersection.

[0004] (2) In actual engineering design, engineering designers in different regions often refer to experience and lack the necessary demonstration process, resulting in the intersection scale being too large or too small

Excessively large intersections cause problems such as waste of land resources and difficulties for pedestrians to cross the street; too small intersections cannot meet the driver's sight distance requirements, resulting in traffic accidents

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