ABSTRACT

The main task of this study is to introduce an applied methodology using terrestrial laser scanner for facilitating the process of detecting, measuring defects and evaluating the condition assessment of rigid pavement instead of traditional visual inspection methods which cause waste of time, high cost and work to disrupt traffic. Terrestrial laser scanner (TLS) was used to create a three-dimensional model for rigid pavement of Gas station in Kafr El-sheikh city in Egypt to evaluate the condition assessment and defect detecting. The evaluation was carried out on rigid pavement slabs with different distress types such as transverse cracking, joint spalling, polished aggregate, blow up, punch out failures, and surface defects. Pavement distresses were identified in terms of defected area, crack width, and intensity. Geometric properties of each rigid pavements slabs are also determined from terrestrial laser scanner observations such as dimensions, settlement of each rigid slab using plane equation technique, rotation and tilting angles for each slab. MAGNET COLLAGE software program was applied to process TLS data and surface cracks measuring. Designed MATLAB software program are also created to fit TLS observations to plane equations. Based on the results, it is deduced that the distortion of rigid slabs ranged from 10 to 46 mm as maximum values and from 1 to 5 mm as minimum values, the angles of the rotation of studied rigid pavement slabs ranged from 0° to 2.3° but the angles of tilting of studied rigid pavement slabs are ranged from −1.6° to 1.9°. The revealed defects in the studied Gas station using terrestrial laser scanner observations provide a significant improvement for detecting rigid pavements characteristics and distresses.

摘要

本研究的主要任务是介绍一种使用地面激光扫描仪的应用方法，以促进检测、测量缺陷和评估刚性路面的状况评估的过程，而不是传统的目视检查方法，因为传统的目视检查方法会浪费时间、成本高并且需要工作扰乱交通。地面激光扫描仪 (TLS) 用于为埃及 Kafr El-sheikh 市加油站的刚性路面创建三维模型，以评估状况评估和缺陷检测。对具有不同破坏类型的刚性路面板进行了评估，例如横向开裂、接缝剥落、抛光骨料、爆破、冲孔失效和表面缺陷。根据缺陷面积、裂缝宽度和强度确定路面损坏情况。每个刚性路面板的几何特性也由地面激光扫描仪观察确定，例如尺寸、使用平面方程技术的每个刚性板的沉降、每个板的旋转和倾斜角。MAGNET COLLAGE 软件程序用于处理 TLS 数据和表面裂纹测量。还创建了设计的 MATLAB 软件程序以将 TLS 观测值拟合到平面方程。根据结果​​推断，刚性板的变形最大值为 10 至 46 mm，最小值为 1 至 5 mm，所研究的刚性路面板的旋转角度范围为 0° 至 2.3°但所研究的刚性路面板的倾斜角度范围为 -1.6° 至 1.9°。