BIM-based engineering quantity extraction system and method for beam-slab prefabrication and cast-in-place structures

Abstract

The invention provides a BIM-based system and method for extracting engineering quantities of prefabricated and cast-in-place structures of beam and slab. The method comprises the steps of establishing component groups of a combined structure and a cast-in-place structure of the structural beam and slab by utilizing a BIM; endowing the component group of the combined structure with first visible parameters, and endowing the component group of the cast-in-place structure with second visible parameters; building an integral structure model containing the combined structure and the cast-in-place structure by utilizing the established component groups; inputting the first visible parameters to the integral structure model, and obtaining a first separation model only displaying the combined structure; extracting geometric data of the combined structure in the first separation model, and making an engineering quantity report of the combined structure; inputting the second visible parameters to the integral structure model, and obtaining a second separation model only displaying the cast-in-place structure; and extracting geometric data of the cast-in-place structure in the second separation model, and making an engineering quantity report of the cast-in-place structure. According to the system and the method, the engineering quantities of prefabricated and cast-in-place parts of the structure beam and slab can be quickly extracted and calculated.

Description

technical field [0001] The invention relates to large-scale prefabricated frame structure building information construction technology, in particular to a BIM-based engineering quantity extraction system and method for beam-slab prefabrication and cast-in-place structures. Background technique [0002] Large-scale prefabricated frame structures include prefabricated composite beams, prefabricated composite slabs, and prefabricated double T panels, which involve large-scale construction, high investment, a large number of prefabricated components, and a large amount of data and information. In the construction process of large-scale prefabricated frame structures Among them, the engineering quantity calculation is the key link to control the project cost. At the same time, the shape of the superimposed surface of the prefabricated and cast-in-place composite structure is irregular, which makes the engineering quantity calculation cumbersome, time-consuming, and large in error....

AI Technical Summary

Problems solved by technology

[0002] Large-scale prefabricated frame structures include prefabricated composite beams, prefabricated composite slabs, and prefabricated double T panels, which involve large-scale construction, high investment, a large number of prefabricated components, and a large amount of data and information. In the construction process of large-scale prefabricated frame structures Among them, the engineering quantity calculation is the key link to control the project cost. At the same time, the shape of the superimposed surface of the prefabricated and cast-in-place composite structure is irregular, resulting in cumbersome, time-consuming and large errors in the calculation of the engineering quantity.

[0003] At present, the conventional model engineering quantity statistics method can only extract the concrete quantity of the component as a whole at one time. If you want to separate and extract the concrete quantity of the prefabricated layer and the cast-in-place layer, you must separately establish the models of the prefabricated layer and the cast-in-place layer. This method not only causes The amount of modeling is repetitive, and because the size of each component is different, users are prone to make mistakes when modeling separately. Users must read the drawings while inputting data into the computer while considering the deduction relationship. Quantity calculation expressions are listed, the calculation is very cumbersome, and errors in this method will cause a large modification cost

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