KR-20260067073-A - Method for evaluating the condition of structures with an automatically generating BIM model including deformation and damage information

KR20260067073AKR 20260067073 AKR20260067073 AKR 20260067073AKR-20260067073-A

Abstract

The present invention relates to a method for evaluating the condition of a structure using a technology for automatically generating a BIM model that reflects deformation and damage. More specifically, the invention relates to a method for evaluating the condition of a structure using a technology for automatically generating a BIM model that reflects deformation and damage, which automatically detects deformation and damage information using the PCD (Point Cloud Data) of a structure, automatically generates a BIM model that reflects deformation information using this information, and automatically generates a BIM model that reflects both deformation and damage information by mapping damage information to the generated BIM model, thereby automating the evaluation of the condition of the structure.

Inventors

이종한
이민진
마수빈

Assignees

인하대학교 산학협력단

Dates

Publication Date: 20260512
Application Date: 20241105

Claims (10)

In a method for evaluating the condition of a structure using BIM model automatic generation technology performed by a computing device, A data collection step for acquiring a PCD having three-dimensional coordinate components of a structure; A deformation information extraction step for extracting deformation information of a structure from a PCD obtained through the above data collection step; BIM model generation step for creating a BIM model of a structure that reflects deformation information; A damage information extraction step for extracting damage information formed in a structure from the PCD obtained through the above data collection step; A damage information mapping step for mapping damage information extracted in the damage information extraction step to the BIM model generated in the above BIM model generation step; and A condition assessment step for performing a condition assessment of a structure using a BIM model that reflects deformation and damage information; comprising Structural condition assessment method using automatic BIM model generation technology reflecting deformation and damage.
In Article 1, The above deformation information extraction step is, A step comprising a topslope deformation extraction step and a settlement deformation extraction step for extracting topslope deformation information and settlement deformation information of a structure, respectively, from the above PCD, Structural condition assessment method using automatic BIM model generation technology reflecting deformation and damage.
In Paragraph 2, The above conductive deformation extraction step is, Upper and lower PCD separation step for separating the PCDs corresponding to the upper and lower parts of the structure from the above PCD; A model setting and fitting step for setting and fitting linear or non-linear models capable of representing upper and lower PCDs using a linear or non-linear model extraction algorithm; An optimal model selection step for selecting the optimal model that best represents the separated upper and lower PCDs through a goodness-of-fit evaluation of the set and fitted linear and/or nonlinear models; and Equation and range extraction step for deriving an equation for a selected optimal model and extracting the ranges of upper and lower PCDs; comprising Structural condition assessment method using automatic BIM model generation technology reflecting deformation and damage.
In Paragraph 2, The above settlement deformation extraction step is, A step for separating PCDs at both ends corresponding to the longitudinal ends from the PCD of the above structure; A height extraction step for extracting the height of a structure using separated two-sided end PCDs; and A settlement depth extraction step for extracting the settlement depth of a structure using the height of the extracted structure; comprising Structural condition assessment method using automatic BIM model generation technology reflecting deformation and damage.
In Article 1, The above BIM model creation step is, A PCD-based model generation step for generating a BIM model of a structure including deformation information using the PCD obtained through the above data collection step; and A parametric-based model generation step for generating a BIM model for parts where PCD cannot be obtained; including Structural condition assessment method using automatic BIM model generation technology reflecting deformation and damage.
In Paragraph 5, The above PCD-based model generation step is, A line generation step that generates the upper and lower lines of the structure, respectively, using information obtained in the deformation information extraction step; A surface generation step of generating an upper surface and a lower surface by adding thickness information of a structure obtained from PCD to the upper and lower lines; and A first BIM model generation step of generating a BIM model of a structure by sweeping from the upper surface to the lower surface; Structural condition assessment method using automatic BIM model generation technology reflecting deformation and damage.
In Paragraph 5, The above parametric-based model generation step is, A section parameter definition step for defining structural section parameters for parts where PCD cannot be obtained; A cross-sectional coordinate generation step for generating cross-sectional coordinates corresponding to defined cross-sectional parameters; and A second BIM model generation step, comprising generating a cross section using the generated cross section coordinates and then generating a BIM model by sweeping in the longitudinal direction; Structural condition assessment method using automatic BIM model generation technology reflecting deformation and damage.
In Article 1, The above damage information extraction step is, A layer creation step for forming a layer on the PCD surface collected in the data collection step; A damage detection step for detecting a damaged portion exceeding a preset undamaged depth by measuring the depth from the plan view of the PCD where the layer is generated; and A damage depth and coordinate extraction step comprising measuring the depth of the damaged portion to distinguish the type of damage and extracting the coordinates of the damaged portion on the PCD; Structural condition assessment method using automatic BIM model generation technology reflecting deformation and damage.
In Article 1, The above damage information mapping step is, A unit area definition step that defines the unit area for each type of damage to be represented on the BIM model; A coordinate conversion step for converting the damage location coordinates on the above PCD into BIM coordinates generated in the BIM model creation step; and A damage mapping step comprising displaying a damage representation unit area defined in a unit area definition step on a BIM model corresponding to the BIM coordinates transformed in the coordinate transformation step; Structural condition assessment method using automatic BIM model generation technology reflecting deformation and damage.
In a method for evaluating the condition of a structure using BIM model automatic generation technology performed by a computing device, A method for evaluating the condition of a structure using a deformation and damage-reflecting BIM model automatic generation technology, which automatically detects deformation and damage information using the PCD (Point Cloud Data) of a structure, automatically generates a BIM model reflecting the detected deformation and damage information, and automates the condition evaluation of the structure using the generated BIM model.

Description

Method for evaluating the condition of structures with an automatically generating BIM model including deformation and damage information The present invention relates to a method for evaluating the condition of a structure using a technology for automatically generating a BIM model that reflects deformation and damage. More specifically, the invention relates to a method for evaluating the condition of a structure using a technology for automatically generating a BIM model that reflects deformation and damage, which automatically detects deformation and damage information using the PCD (Point Cloud Data) of a structure, automatically generates a BIM model that reflects deformation information using this information, and automatically generates a BIM model that reflects both deformation and damage information by mapping damage information to the generated BIM model, thereby automating the evaluation of the condition of the structure. Generally, social infrastructure refers to facilities that serve as the basis for various production activities and facilities that enhance the convenience of people's lives, and among these, structures may include retaining walls, roads, bridges, tunnels, etc. Recently, there has been a rapid increase in aging structures that have exceeded 30 years of service life. In other words, since structures can experience deformation and damage that degrades their performance due to various physical factors after construction, safe and reliable inspection methods are required to assess the deformation state and extent of damage. In particular, since structures constituting social infrastructure can cause significant loss of life and economic damage if proper maintenance and repairs are not carried out, it is crucial to accurately assess their condition to establish an appropriate maintenance plan. Recently, research has been underway to apply Building Information Modeling (BIM) technology to the maintenance of aging structures, but the reality is that this technology is mostly utilized only during the design phase of the structures. In addition, while some prior art technologies have been disclosed that allow for the digitization of exterior inspection maps for structural condition assessment or their integration with 3D BIM models, most of them merely represent damage information included in the exterior inspection maps in a separately generated 3D BIM model. Furthermore, no systems or methods related to automatically generating a BIM model with damage information reflected, or automatically performing structural condition assessment based on the generated BIM model, have been presented yet. Meanwhile, reverse engineering techniques, which have been widely used in the fields of machinery, design, and heavy industry, are also recently being used in the construction industry, a representative example being Scan-to-BIM. Scan-to-BIM generally refers to reverse engineering based on BIM data, which involves extracting digital shape information and drawings from structures that do not have design drawings by utilizing technologies such as 3D scanning. Recently, its scope of application has diversified to include not only the creation of drawings for structures without drawings, but also repair or maintenance work, construction progress monitoring, structural safety diagnosis, and measurement of construction precision. In the Scan-to-BIM process, the procedure for generating BIM data through 3D scanning can generally consist of a field survey and scan survey planning stage, a field 3D scanning operation execution stage, a stage of acquiring point cloud data (hereinafter referred to as 'PCD') having three-dimensional coordinate components, a data registration, alignment, and merging stage, and a BIM data generation stage through the fusion of PCD and BIM. As prior art regarding such Scan-to-BIM, Korean Registered Patent Publication No. 10-2353827 discloses a rule-based Scan-to-BIM mapping pipeline structural design apparatus and method. The aforementioned prior art is characterized by the technical feature of extracting a pipe shape from a PCD obtained by scanning a scanned object, defining rules for mapping the extracted pipe shape to a BIM object, and designing a Scan-to-BIM mapping pipeline structure based on the defined mapping rules; however, since this is a technology intended simply to map the pipe shape extracted from the PCD to BIM, it has the disadvantage of lacking means or methods to reflect deformation that occurs in the structure, i.e., the pipeline. Furthermore, the level of technology application to social infrastructure facilities such as bridges is also very low. In other words, aging structures inevitably involve deformation caused by long-term applied loads. Therefore, for the maintenance of such aging structures, the detection and history management of deformation must be carried out. Since this requires the analysis of long-term change trends for each structural member, th