Drawing method for showing three-dimensional figure of underground pipelines by using plane figure

Abstract

The invention provides a drawing method for showing a three-dimensional figure of underground pipelines by using a plane figure, which can be realized by a 2D figure processor. A road plane figure, aroad section cutting plane figure, a vertical pipe position figure, a ground datum line and a pipeline vertical view are integrated according to an underground pipeline figure drawn according to the invention so that the three-dimensional relationship between the underground pipelines is clear at a glance and has strong visibility to be convenient for error detection. The invention can accuratelyand simply label the horizontal and vertical sizes of the pipelines, the pipelines with same distances on the figure have same actual distances, and the figure can be used as an engineering construction figure so that the construction precision and the construction speed are greatly improved.

Description

technical field [0001] The invention relates to a drawing method for underground pipeline graphics, in particular to a drawing method for expressing three-dimensional graphics of underground pipelines with plane graphics. Background technique [0002] In recent years, with the progress of the city and the improvement of the quality of the living environment, people's dependence on underground pipelines has increased day by day, and the configuration of underground pipelines has become increasingly complex. Usually, during the construction of underground pipelines, construction personnel need to comprehensively infer the distribution of underground pipelines through multiple plane construction drawings, such as road cross-section pipe location maps, road plane pipe location maps, and road intersection pipe location plans. This method is poor intuition, difficult to detect errors, and thus inefficient. [0003] Such as figure 1 As shown, the three-dimensional perspective vie...

AI Technical Summary

Problems solved by technology

However, it is necessary to use complex computer software and expensive 3D graphics processors to draw such a three-dimensional perspective view of underground pipelines. If it is necessary to first generate three views (so-called modeling), even if a simple pipeline is drawn, the cost will be high. and time consuming

Secondly, because the three-dimensional perspective drawing has the characteristics that the near side is large and the far side is small, in the above-mentioned three-dimensional perspective view of underground pipelines, the line segments with the same length do not necessarily represent the same actual distance. The scale cannot meet the requirements of actual construction. If the drawing is defaced or the size is unclear, it is impossible to use the method of measuring on paper to obtain the actual three-dimensional size

In addition, when the underground pipeline is too complex, it is difficult for any 3D perspective view of the underground pipeline to clearly mark the 3D distribution of all underground pipelines, and it is difficult to detect design errors

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