Research of parametric modeling methods for isolated foundation based on Revit secondary development

doi:10.11996/JG.j.2095-302X.2026010194

Abstract

Abstract:

With the widespread application of Building Information Modeling (BIM) technology in the field of engineering design, the Revit platform-driven 3D forward design has developed into a relatively mature solution for superstructure. However, as a critical structural component, isolated foundations still face challenges such as low efficiency and poor information integrity in 3D modeling and drawing generation. Moreover, due to the closed data interfaces of mainstream structural analysis software, it is extremely challenging to directly extract reinforcement information from fundamental database files and synchronize to the properties of Revit elements. To address this limitation, a new parametric modeling algorithm for isolated foundations based on AutoCAD layer and text recognition was proposed, utilizing the Revit Application Programming Interface (API) and the Model-View-ViewModel (MVVM) design pattern. By importing foundation layout and reinforcement annotation drawings generated by structural analysis software (e.g., YJK) into Revit, the algorithm calculated the center coordinates and planar dimensions of foundations using layer-recognition methods. Then, a matching logic was established between foundations and reinforcement annotations according to their relative positions. Subsequently, text recognition was employed to extract the corresponding annotations’ numbering, height, and reinforcement information, which were then automatically written into the family properties of the model. Additionally, the extraction of model attributes and geometric face references enabled automatic annotation of foundation dimensions and reinforcement. Finally, the proposed method was applied to the parametric modeling and drafting of isolated foundations for a self- built cold storage factory and was compared against conventional methods. The results demonstrated that this algorithm significantly improved the efficiency of three-dimensional modeling and annotation drawing for isolated foundations, while exhibiting excellent compatibility with calculation files exported from PKPM software.

Key words: isolated foundation, parametric modeling, Revit, secondary development, building information modeling

CLC Number:

TU17

DENG Peng, TAN Wenzheng, LUO Huiming, LI Shuai, YANG Bin. Research of parametric modeling methods for isolated foundation based on Revit secondary development[J]. Journal of Graphics, 2026, 47(1): 194-203.

Figures/Tables 14

Table 1 Partial methods and their functions in Revit API

方法名称	功能
GetOutline()	获取边界框的最大和最小坐标点
ZoomAndCenterRectangle()	居中缩放显示当前视图指定区域
NewFamilyInstance()	创建新的Revit族实例
Set()	修改Revit元素参数值
Delete()	删除指定的Revit元素
get_Geometry()	获取Revit元素的几何信息
NewDimension()	创建线性尺寸标注
Create()	创建结构基础标记

Fig. 1 Revit secondary development process

Fig. 2 MVVM architecture logic

Fig. 3 Isolated foundation types ((a) Tapered single-stage; (b) Stepped single-stage; (c) Stepped two-stage; (d) Stepped three-stage)

Fig. 4 Simplified geometric calculation diagram for two-stage isolated foundation ((a) θ=0; (b) 0<θ<π/2)

Fig. 5 Reinforcement annotation style based on the Flat Method ((a) Detailed annotation; (b) Simple annotation)

Table 2 Isolated foundation centralized annotation content

Fig. 6 Isolated foundation model creation process

Fig. 7 Three dimensional model of self-made factory building

Fig. 8 Isolated foundation conventional modeling method

Fig. 9 Revit secondary development plugin interface

Fig. 10 Partial modeling results of isolated foundation

Fig. 11 Partial annotation results of isolated foundation

Table 3 Modeling and drafting time for isolated foundation under different methods/min

方法	参数化建模			标注出图
方法	模型生成	建模处理	总耗时	标注出图
手动方法	120.0		120.0	90.0
TSRS	1.1	35.0	36.1	90.0
Revit-YJKS	0.8	35.0	35.8	25.0
本文方法	1.2	17.0	18.2	15.0

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