When constructing Reinforced Concrete (RC) components, rebar spacing must be inspected in the field before pouring concrete. The traditional inspection of rebar spacing: (1) depends on the experience of the individual inspector; (2) is limited to a pass/fail outcome; and (3) is in general conducted with limited time. This paper presents a recognition algorithm that automatically identifies the rebar position using LiDAR. The result is an automatic Rebar Layout Quality Index (RLQI). Researchers collected LiDAR data from a real rebar mat, compared it with the design drawings, and obtained the RLQI for both top and bottom rebar mats. The authors also quantified the quality of the structural construction with a new flexural relative moment strength index. This methodology has the potential to reduce inspection time and increase the reliability of inspections through an objective assessment of rebar spacing, by creating an as-built record of actual rebar location in the structure.

在建造钢筋混凝土 (RC) 组件时，在浇筑混凝土之前必须在现场检查钢筋间距。传统的钢筋间距检验：（1）取决于个体检验员的经验；(2) 仅限于通过/失败结果；(3) 一般是在有限的时间内进行。本文提出了一种使用激光雷达自动识别钢筋位置的识别算法。结果是自动钢筋布局质量指数 (RLQI)。研究人员从真实的钢筋垫上收集 LiDAR 数据，将其与设计图纸进行比较，并获得顶部和底部钢筋垫的 RLQI。作者还使用新的弯曲相对力矩强度指数量化了结构结构的质量。