A virtual intersection method for construction stakeout
A forward intersection and sample point technology, applied in the direction of instrumentation, geometric CAD, calculation, etc., can solve the problems of lack of visibility, influence of visibility of control points, quality of surveying and mapping work and inconvenience of progress, etc.
Inactive Publication Date: 2018-09-25
XIAN UNIV OF SCI & TECH
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Problems solved by technology
In urban areas with relatively dense buildings, due to the rapid update of buildings, new buildings or obstacles that affect the visibility are added between the original control points that communicate with each other, so that the visibility between control points is affected. The impact is even completely invisible, which brings inconvenience to the quality and progress of surveying and mapping work
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[0041] Such as figure 1 , figure 2 with image 3 As shown, a kind of construction lofting virtual front intersection method of the present invention comprises the following steps:
[0042] Step 1. Select the transition point and the known point of virtual forward intersection: select the corresponding transition point for the two original known points that block the line of sight from each other, where the two original known points are the original known point A and the original known point A respectively. Point B, select transition point C in the area that the original known point A sees through, select transition point D in the area that the original known point B sees through; select a virtual front between transition point C and transition point D The known intersection point O, the known virtual forward intersection point O is located within the rectangle ABDC, the known virtual forward intersection point O is in sight with the transition point C, transition point D an...
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The invention discloses a virtual front intersection method for a construction layout. The method comprises the steps that 1, transition points and a virtual front intersection known point are selected; 2, observation data is acquired; 3, the distance between an original known point A and an original known point B is calculated; 4, the distances between the original known point A and the originalknown point B and the virtual front intersection known point O, the degree of an angle CAO, the degree of an angle DBO, the degree of an angle BAO, and the degree of an angle ABO are calculated; 5, the coordinate of the virtual front intersection known point O is calculated; 6, the coordinates of a transition point C and a transition point D are calculated; 7, the construction layout is achieved.According to the virtual front intersection method for the construction layout, the transition points are added within the observation range of the original known points, the virtual front intersection known point is added in the observation range of the transition points, the coordinates of the transition points and the virtual front intersection known point are calculated by combining with the geometrical relation among the original known points, the transition points and the virtual front intersection known point, accordingly, the construction layout of a construction area is completed, andthe problem of the construction layout with no intervisibility of the original known points is solved.
Description
technical field [0001] The invention belongs to the technical field of construction stakeout, and in particular relates to a virtual forward intersection method for construction stakeout. Background technique [0002] The surveying work of construction engineering exists in the whole process of construction work, and the construction lofting work plays a vital role in the work progress and construction quality of the whole project. However, with the advancement of urbanization and the rapid development of urban and rural construction, high-rise buildings continue to increase. In urban areas with relatively dense buildings, due to the rapid update of buildings, new buildings or obstacles that affect the visibility are added between the original control points that communicate with each other, so that the visibility between control points is affected. The impact is even completely invisible, which brings inconvenience to the quality and progress of surveying and mapping work....
Claims
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IPC IPC(8): G06F17/50
CPCG06F30/13G06F30/20
Inventor 朱庆伟刘明明
Owner XIAN UNIV OF SCI & TECH