Empirical Study on Structural Safety Diagnosis of Large-Scale Civil Infrastructure Using Laser Scanning and BIM

Abstract

Existing structural safety diagnosis methods are time-consuming due to personnel-oriented measurement methods and have a limitation that it is difficult to obtain consistent research results. In order to overcome these limitations, this study proposes a structural safety diagnosis method using laser scanning and BIM. In spite of the various studies related to laser scanning and BIM, it is difficult to find a study that verifies the effect of shortening the service period and cost reduction in terms of project management. Therefore, in this study, case analysis of structural safety diagnosis of large-scale civil infrastructure was conducted. In the structural safety diagnosis, the laser scanning data and the BIM model were compared and analyzed to determine the degree of deformation of pipe rack (e.g., truss, column). Laser scanning data reflects the deformation state of large-scale civil infrastructure. On the other hand, the BIM model was constructed by reflecting the state before the transformation with reference to the laser scanning data. Finally, proposed method of structural safety diagnosis saved four months. In terms of manpower saving, 125 man-month was saved. The research findings can provide a quantitative basis for the introduction of laser scanning and BIM technology in the structural safety diagnosis of aging large-scale civil infrastructures. However, the limitations of this study have not been analyzed economically by considering the investment cost (e.g., hardware, software, training, etc.) of laser scanning and BIM technology and the cost saving effect of technology introduction.

A Survey of Applications With Combined BIM and 3D Laser Scanning in the Life Cycle of Buildings

“…The adoption of 3D laser scanning technology improved 50 % efficiency and retrench 40 % of cost as against the traditional approach in Yongxin Floodgate Pumping Station Project in China. Ham et al [5] presented a structural safety diagnosis method using 3D laser scanning and BIM. In the case analysis, the point cloud and the BIM model were compared and analyzed to determine the degree of deformation of pipe rack.…”

“…TLS is usually fixed on a stable tripod or observation pile, and it can achieve up a precision of several millimeters from one hundred meters range. Point cloud derived from TLS is usually used for progress tracking [4], struct health monitoring [5] [6] and 3D reconstruction [7]. Although TLS provides data at the rate of about one million points per second, it generates complete point cloud of a building slower than MLS.…”

Laser Scanning Based Surface Flatness Measurement Using Flat Mirrors for Enhancing Scan Coverage Range

“…However, these two traditional flatness assessment methods are performed manually or by contact-type devices, which are time-consuming, labor-intensive and prone to human errors. As an alternative, terrestrial laser scanner (TLS) has been widely used and considered as a promising 3D data acquisition technology for concrete surface inspection because of the nature of noncontact and accurate measurement [9][10][11][12][13][14][15][16][17]. Nevertheless, there are still limitations according to previous studies in order to ensure the feasibility of the TLS-based surface flatness inspection.…”

BIM-Based Visualization Research in the Construction Industry: A Network Analysis

“…As the construction industry has been criticized for many reasons, such as for large energy consumption [7,8], resources wastage [9,10], and inefficient communication [11,12], BIM is regarded as a potential solution for the existing problems. Recently, BIM has been employed in many fields, such as in the sustainable design of buildings [13,14,15], lifecycle energy optimization [16,17], e-commerce and e-negotiation [18,19], cost performance improvement [20,21,22], renovation strategy optimization [6,23,24], structural safety diagnosis [25], and productivity improvement [26].…”