Curve corner and deflection direction determination method and application of road design curve

A deflection direction and road design technology, applied in special data processing applications, geometric CAD, etc., can solve the problems of cumbersome calculation and judgment of deflection direction, and achieve the effect of simple and clear calculation method, easy operation, and simplified judgment steps

Active Publication Date: 2021-04-23
CHINA RAILWAY NO 2 ENG GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the complicated problem of calculating the curve angle and judging the deflection direction o

Method used

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  • Curve corner and deflection direction determination method and application of road design curve
  • Curve corner and deflection direction determination method and application of road design curve
  • Curve corner and deflection direction determination method and application of road design curve

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0059]Example 1

[0060]The design of the railway and highway engineering lines involves the determination of a large number of curve corner calculations and curve deflection directions, but the existing intersection method calculates the curve corner, and the direction of determination of the curve is more complicated, resulting in engineering line flat design. Steps are cumbersome, therefore need to develop a simpler curve corner calculation and determination of the direction of curve deflection.

[0061]In order to solve the above technical problems, the inventors have proposed a method of determining the curve angle and deflection direction of road design curves in the present application. Seefigure 1 Specifically, the following steps:

[0062]S1: Depending on the road plan design information acquisition the curve type of the target curve and the first straight line and the second straight line connected to both ends of the target curve, obtain the intersection g of the first straight li...

Example Embodiment

[0124]Example 2

[0125]The curve angle of the road design curve and the deflection direction determination method of the road design curve is applied to the full station analyzer measuring polar coordinate method for calculating the size of the polar coordinate angle and the deflection direction of the sampling angle.

[0126]The application includes the following steps:

[0127]SeeFigure 5 Establish a coordinate system, and determine the coordinates of the mirror, rear view point, and placement point in the coordinate system. Determine the first straight line with the full station instrumentation mirror and the rear view point, and its orientation points to the direction of the rear view; The instrumentation mirror point and the ingress point determine the second straight line, the orientation pointing point direction; the whole station instrumentation is the first straight line and the second straight intersection;

[0128]Calculate the orientation of the first straight line according to the...

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Abstract

The invention discloses a curve corner and deflection direction determination method and application of a road design curve, and relates to the technical field of road plane alignment design and construction.The curve corner and deflection direction determination method comprises the steps: obtaining the curve type of a target curve and a first straight line and a second straight line which are connected to the two ends of the target curve respectively; randomly taking two points on the first straight line and the second straight line respectively, and calculating the orientation of the first straight line and the orientation of the second straight line; obtaining a minimum rotation angle value of the orientation of the first straight line deflected to the orientation of the second straight line; obtaining a curve corner and a deflection direction of the target curve according to the type of the target curve and the minimum corner value. The invention also discloses an application of the method in engineering surveying by adopting the total station. The calculation method is simple and clear, it is only needed to determine whether the target curve is a common curve or a turn-back curve in the calculation process, and curve corner value calculation and deflection direction do not need any judgment step.

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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Application Information

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IPC IPC(8): G06F30/13
CPCG06F30/13
Inventor 杨维裕
Owner CHINA RAILWAY NO 2 ENG GRP CO LTD
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