BIM modeling of urban infrastructure using drone aerial surveys

Author(s)

Júlio César Franco Júnior

• Document type: Master's Dissertation
• Press: São Carlos.
• Institution: Universidade de São Paulo (USP). Escola de Engenharia de São Carlos (EESC/SBD)
• Defense date: 2019-12-04

Examining board members

Márcio Minto Fabricio; Arivaldo Leão de Amorim; Eloisa Dezen kempter; Marcel Fantin

• Advisor: Márcio Minto Fabricio

Abstract

The development of urban infrastructure, as well as its maintenance, require structured technical documentation for management efficiency and access to essential information for interventions and emergencies. The problematic involves existing outdated information, interventions with inconsistent and unintegrated records, obsolete data, and gaps of information that generate systematic losses of information throughout the lifecycle of urban infrastructure. This work proposes the study of UAVs/drones and BIM for surveying and documenting urban infrastructure. Therefore, it includes the investigation and development of maps and 3D models, comprising the study of aerial survey techniques, digital photogrammetry, and BIM modeling for data integration and documentation of infrastructure works at Campus 2, USP São Carlos. Methods and research approach include (i) bibliographic research, focusing on digital aerial photogrammetry, building information modeling, and urban infrastructure; (ii) exploring tools for aerial surveying, image and point cloud processing, and BIM modeling; and (iii) experimental research applying aerial survey with DJI Mavic Pro, image processing using Structure from Motion (SfM) via PIX4D, Agisoft Photoscan, and Autodesk Recap, and BIM modeling with Autodesk suit. Results encompass analyses of the use of aerial photogrammetry and BIM for urban infrastructure by means of aerial photo acquisition, 2D maps, and the development of orthophotos and 3D models. Results demonstrate the effective combination of survey and modeling technologies for application in urban infrastructure. The generated products add to a digital asset information base that can enhance the integration of documentation technical data. The knowledge derived from this work helps to clarify, in practice, the use of techniques for surveying and modeling of urban infrastructure, what represent potential improvement opportunities for the documentation and management of urban infrastructure systems. (AU)

• FAPESP's process: 17/24896-4 - Infrastructure building information modeling for integrated project delivery of university campus
• Grantee: Júlio César Franco Júnior
• Support Opportunities: Scholarships in Brazil - Master