| Title |
A Study on the Prioritization and Combination Strategies of Smart Safety Technologies by Construction Phase in Modular Apartment Off-Site Construction |
| DOI |
https://doi.org/10.5659/JAIK.2026.42.6.389 |
| Keywords |
Modular apartment OSC construction; Smart safety technology; Construction phase; AHP-TOPSIS; Combination strategy |
| Abstract |
This study aims to identify the priorities of smart safety technologies by construction phase and to suggest combination strategies for modular
apartment OSC construction. To achieve this, major safety risk factors in the transportation, lifting, and installation phases were identified
through a literature review and analysis of prior studies. Five smart safety technology alternatives, namely IoT sensing, AI vision, worker
tracking, BIM/Digital Twin, and drone monitoring, were selected, and five evaluation criteria were established: safety, applicability, real-time
capability, data integration, and economic efficiency. An expert survey was conducted, and the relative importance of the evaluation criteria
was derived using the analytic hierarchy process (AHP), while the priorities of smart safety technology alternatives by construction phase
were analyzed using the technique for order preference by similarity to ideal solution (TOPSIS). The results show that safety was identified
as the most important evaluation criterion, followed by applicability, real-time capability, data integration, and economic efficiency. In the
transportation phase, IoT sensing and BIM/Digital Twin showed relatively high priorities. In the lifting phase, AI vision and worker tracking
were identified as the most suitable technologies. In the installation phase, AI vision and drone monitoring showed the highest priorities.
These findings indicate that smart safety technologies should not be applied uniformly across all construction phases, but should instead be
combined in a differentiated manner according to phase-specific risk characteristics and work conditions. The suggested combination strategies
were derived by considering phase-specific priorities together with the complementary functions of each technology. This study is meaningful
in that it systematically presents phase-specific priorities and suggested combination strategies for smart safety technologies in modular
apartment OSC construction. The results of this study can serve as practical reference data for safety planning and decision-making regarding
the adoption of smart safety technologies in modular construction projects. |