T/JSJTQX 37-2023 Active

Scope: This document specifies the basic requirements, instruments and software, construction measurement, point cloud quality evaluation and improvement for laser point cloud measurement technology in intelligent measurement of highway subgrade and pavement. This document is applicable to intelligent measurement of highway subgrade and pavement. Main technical content: Introduction to the technical content of "Technical Regulations for Intelligent Measurement of Highway Subgrade and Pavement - Laser Point Cloud Measurement": In subgrade engineering, traditional measurement methods are time-consuming and labor-intensive, making it difficult to carry out measurement work, resulting in poor control of highway subgrade elevation, horizontal slope, width and slope angle. Intelligent measurement technology, with its high efficiency and accuracy, is gradually applied to engineering measurement work. In recent years, laser scanning instruments, as intelligent measurement instruments, have gradually expanded their application scenarios, and this technology has been gradually promoted in highway engineering measurement. This document summarizes the experience accumulated over the years in laser scanning technology in highway engineering measurement, conducts further in-depth research and investigation on the theory and practical work of laser scanning technology, provides specifications for the use of new technologies for laser point cloud measurement of subgrade and pavement, and stipulates the requirements for laser scanning instruments, procedures, data collection and processing, and modeling, etc.