BIM (Building Information Modeling)-based special-shaped earthwork engineering quantity measuring and calculating method and device

Abstract

The invention discloses a BIM (Building Information Modeling)-based special-shaped earthwork engineering quantity measuring and calculating method and device, and the method comprises the steps: S01, building an original terrain curved surface model, and designing a finished curved surface model; s02, establishing a volume curved surface model according to the original terrain curved surface model and the designed curved surface model, and calculating the total volume of earthwork of each excavation and filling partition; s03, determining a partition range according to the original terrain curved surface model and the designed curved surface model, and establishing a plurality of horizontal layered curved surface models; and S04, establishing boundary curved surface models among the areas with different compaction degrees, performing layering according to each currently obtained curved surface model, generating a volume curved surface of each layer, and performing calculation according to a volume curved surface iterative subtraction method to obtain the filling earth-rock work amount of each layer with different compaction degrees. The method can achieve the measurement and calculation of the engineering quantity of the ultra-large special-shaped earthwork, and has the advantages of being simple in implementation method, high in flexibility, high in measurement and calculation efficiency, high in measurement and calculation precision and the like.

Description

technical field [0001] The invention relates to the technical field of earthwork engineering measurement, in particular to a BIM-based measurement and calculation method and device for special-shaped earthwork engineering quantities. Background technique [0002] The quantity of earthwork is an important guiding basis for the construction party's bidding budget measurement, professional subcontracting settlement measurement, construction management, earthwork allocation, technical plan, etc., and its division, layering and sub-compaction degree engineering quantity are one of its main contents. The measurement and calculation of special-shaped earthwork is complicated, especially for super-large (millions of square meters) special-shaped earthwork. For the calculation of earth and stone calculations on special-shaped curved surfaces, at present, it is mainly based on the topographic survey point data, using the manual measurement method of the two-dimensional drawing section...

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Problems solved by technology

[0003] 1. The simulated slope design lacks authenticity, and there will be a large error with the real slope design, and the engineering quantity obtained by surface-to-surface stretching between sections is not accurate, especially for super-large earthworks of millions of cubic meters , the calculation error is extremely large, and only rough measurement can be realized;

[0004] 2. The measurement efficiency is low, and timely measurement cannot be realized, especially for earthwork filling projects with complex compaction zones and a large number of filling layers, it takes a lot of time to achieve measurement. The above-mentioned calculation method based on manual calculation is efficient It will not be able to meet the construction timeliness requirements;

[0005] 3. It is impossible to realize the linkage modification of parameters and measurement results. Once the design parameters are modified, all measurement needs to be re-executed, and a large number of repetitive calculations need to be performed, which cannot provide real-time reference data for construction in time.

However, the above-mentioned intelligent calculation method of earthwork volume based on BIM software is only suitable for small-scale earthwork engineering, and is not suitable for the measurement and calculation of large-scale, especially super-large earthwork volume. A large number of layers, and the division and sub-compaction degree are complicated, which will lead to extremely long calculation time and cannot meet the timeliness requirements of the project

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