Method and application for determining curve corner and deflection direction of road design curve

A deflection direction and road design technology, applied in special data processing applications, geometric CAD and other directions, can solve the problems of complicated calculation and deflection direction judgment, and achieve the effect of simple and clear calculation method, easy operation, and simplified judgment steps.
CN112699434BActive Publication Date: 2021-09-21CHINA RAILWAY NO 2 ENG GRP CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA RAILWAY NO 2 ENG GRP CO LTD
Publication Date
2021-09-21

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Abstract

The invention discloses a method for determining the curve angle and deflection direction of a road design curve and its application, and relates to the technical field of road plane alignment design and construction, including: obtaining the curve type of the target curve, and the first method for connecting the two ends of the target curve respectively. a straight line and a second straight line; two points are randomly selected on the first straight line and the second straight line respectively, and the azimuth of the first straight line and the second straight line are calculated; the azimuth deflection of the first straight line is obtained to the The minimum rotation angle value of the orientation of the second straight line; the curve rotation angle and deflection direction of the target curve are obtained according to the type of the target curve and the minimum rotation angle value. The invention also discloses the application of the method in engineering survey by using the total station. The calculation method of the present invention is simple and clear, and only needs to determine whether the target curve is a general curve or a reverse curve in the calculation process, and the calculation of the curve corner value and the deflection direction do not require any judgment steps.
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Description

technical field

[0001] The invention relates to the technical field of road plane alignment design and construction, in particular to a method for determining the curve corner and deflection direction of a road design curve and its application. Background technique

[0002] The planes of traffic engineering lines such as railways and highways are composed of straight lines and curves. Among them, the curves include circular curves and transitional curves, and the transitional curves are divided into clothoids and cubic parabolas. The basic structural form of a complete line plane curve is straight line + transitional curve + circular curve + transitional curve + straight line. Its combined transformation forms include: straight line + circular curve + straight line form, straight line + transitional curve + circular curve + straight line form, straight line + circular curve + transitional curve + straight line form, etc. Regardless of the type of plane curve, once the two ...

Claims

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