The benefit of 3D laser scanning technology in the generation and calibration of FEM models for health assessment of concrete structures.

Hao Yang,Ingo Neumann,Xiangyang Xu

doi:10.3390/s141121889

Hao Yang, Ingo Neumann + Show 1 more

Open Access

https://doi.org/10.3390/s141121889

Copy DOI

Abstract

Terrestrial laser scanning technology (TLS) is a new technique for quickly getting three-dimensional information. In this paper we research the health assessment of concrete structures with a Finite Element Method (FEM) model based on TLS. The goal focuses on the benefits of 3D TLS in the generation and calibration of FEM models, in order to build a convenient, efficient and intelligent model which can be widely used for the detection and assessment of bridges, buildings, subways and other objects. After comparing the finite element simulation with surface-based measurement data from TLS, the FEM model is determined to be acceptable with an error of less than 5%. The benefit of TLS lies mainly in the possibility of a surface-based validation of results predicted by the FEM model.

Highlights

Terrestrial 3D laser scanning technology (TLS) is a relatively new technique for quickly getting three-dimensional spatial information. It was hailed as another technological revolution in the field of surveying and mapping after GPS technology which accurately reconstructs the scanned objects and builds high-fidelity, high-precision 3D point clouds [1]
The results demonstrated that terrestrial laser scanning can be used to quantify cliff failures to a previously unobtainable precision
14.17 kN which will be compared with Finite Element Method (FEM) model (See Figure 12)

Summary

Introduction

Terrestrial 3D laser scanning technology (TLS) is a relatively new technique for quickly getting three-dimensional spatial information. It was hailed as another technological revolution in the field of surveying and mapping after GPS technology which accurately reconstructs the scanned objects and builds high-fidelity, high-precision 3D point clouds [1]. Through such processes, TLS is able to acquire a dense 3D coordinate information effectively and precisely over the entire objects or surfaces. TLS technology with high reliability, precision and good flexibility has broad application prospects. The TLS technology is widely used in high-precision ground information, three-dimensional measuring and three-dimensional digital design

Methods

Results

Conclusion