Risk Analysis for Earthquake-Damaged Buildings Using Point Cloud and BIM Data: A Case Study of the Daeseong Apartment Complex in Pohang, South Korea

Abstract

Since 2016, the frequency and scale of earthquakes have been rapidly increasing in South Korea. In particular, the damage caused by the Gyeongju and Pohang earthquakes has attracted considerable attention since 2017, leading to changes in social insensitivity to safety and the perception of seismic damage to facilities. However, the current risk assessment technology for earthquake-damaged buildings is subjective and inaccurate, as it is based on visual inspection for a limited time. Accordingly, this study focuses on improving the method of analysis of disaster-damaged buildings. To this end, the study analyzes the risk factors of earthquake-damaged buildings by comparing point cloud data using 3D scanning technology with Building Information Modeling (BIM) spatial information, which is based on the existing design information. To apply this technology, existing design information was acquired through BIM modeling of the existing 2D design drawings of Building E in the Daeseong Apartment Complex (located in Heunghae-eup, Pohang City). This study is expected to contribute to improving the efficiency of measurement technology for earthquake-damaged buildings by analyzing old buildings’ BIM-based 3D modeling visualization information without drawing information, and thus improving the accuracy of seismic damage risk measurement by scanning point cloud data.

The uptake of City Information Modelling (CIM): a comprehensive review of current implementations, challenges and future outlook

“…, 2021). In this regard, the CIM can play an important role in enhancing the predictability of occurring natural disasters and developing viable strategies to increase urban resilience (Park and Seo, 2021; Lu et al. , 2020b; Lei et al.…”

“…, 2007). The review showed that studies implemented CIM for various purposes including analysis and mitigation of risks associated with earthquakes (Park and Seo, 2021; Trendafiloski et al. , 2009; Lu et al.…”

“…Modelling urban design by moving from "disaster vulnerability" to "disaster resilience" in order to develop resilient communities (Sajjad et al, 2021). In this regard, the CIM can play an important role in enhancing the predictability of occurring natural disasters and developing viable strategies to increase urban resilience (Park and Seo, 2021;Lu et al, 2020b;Lei et al, 2020;Isikdag et al, 2007).…”

“…The review showed that studies implemented CIM for various purposes including analysis and mitigation of risks associated with earthquakes (Park and Seo, 2021;Trendafiloski et al, 2009;Lu et al, 2019), fire response management (Ma et al, 2019;Isikdag et al, 2007) and urban flood inundation (Rong et al, 2020;Singh and Garg, 2016). For instance, Rong et al (2020) developed hydrodynamic models to quantify the risks associated with floods in a coastal city.…”

Seismic building design work process using building information modeling (BIM) technology for Malaysian Government projects

“…This study demonstrates that BIM is beneficial not only for building assessment but also for response activities. Latest, a study by Park and Seo (2021) also shows that risk assessment for earthquake damaged-building can be improved by comparing BIM-based 3D modeling visualization with point cloud data using 3D scanning technology. This proposed risk assessment technology can be an appropriate methodology for measuring current building values.…”