BIM-based foundation pit support engineering profile drawing method

Abstract

The invention discloses a BIM (Building Information Modeling)-based foundation pit support engineering profile plotting method, which comprises the following steps of: respectively creating a foundation pit support model and a geological model on a Revit platform; respectively establishing a plurality of corresponding profile map family models according to a plurality of profile map types existingin the foundation pit support model; on the Revit platform, integrating the geologic model and the foundation pit enclosure model together to generate a foundation pit geology and enclosure model; onthe sectioning foundation pit geology and enclosure model, parameter information of the component and the stratum sectioned by the sectioning line is extracted, and the parameter information comprises the size and coordinate position information of the component and the geological information of the stratum; and determining a corresponding profile map family model according to the position of thesectioning line, assigning the parameter information of the component and the stratum to the profile map family model, hiding unwanted elements, and exporting to obtain a CAD engineering profile map.The method has the advantages that the CAD profile map can be derived quickly, efficiently and accurately through the BIM, and additional drawing in CAD is not needed.

Description

technical field [0001] The invention belongs to the technical field of engineering drawing, and in particular relates to a BIM-based method for drawing a section drawing of a foundation pit enclosure project. Background technique [0002] BIM is Building Information Modeling (Building Information Modeling). By establishing a three-dimensional model of the project and using digital technology, it provides the three-dimensional model with a construction engineering information base consistent with the actual situation. The information base not only contains the geometric information of the components, but also includes non- geometric information, etc. Based on this 3D model, the design and drawing of foundation pit enclosure engineering can be carried out. [0003] With the rapid development of urban construction in our country, all kinds of urban infrastructure and underground space can be rapidly developed, and the foundation pit project is developing in a deeper, larger an...

AI Technical Summary

Problems solved by technology

[0005] 1) The workload of CAD drawing is relatively large, and the work efficiency is low. It is necessary to express the three-dimensional shape in the plane view, and deviations will inevitably occur;

[0006] 2) The correlation between two-dimensional design drawings is not enough, not intuitive enough, the accuracy of the design often needs to be determined by experience, the subjectivity is relatively strong, and it is not easy to find errors in the design stage, and the accuracy of the design is difficult to guarantee

[0007] 3) During the design process of foundation pit enclosure engineering, changes are frequent

When the design changes, the two-dimensional design needs to modify the drawings repeatedly, which involves a lot of repetitive work, heavy and cumbersome workload, and it is difficult to ensure the uniformity of changes

[0008] 4) The visualization effect of the 2D design is not good, and the correlation between the drawings and the actual project is not enough. The construction personnel need to map the 2D drawings into a 3D actual model

[0009] To sum up, there are still many deficiencies in the drawing method of the section drawing of foundation pit enclosure engineering at the present stage, and it needs to be improved in drawing efficiency and drawing accuracy

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