Framework for Structural Health Monitoring of Steel Bridges by Computer Vision

Abstract

The monitoring of a structural condition of steel bridges is an important issue. Good condition of infrastructure facilities ensures the safety and economic well-being of society. At the same time, due to the continuous development, rising wealth of the society and socio-economic integration of countries, the number of infrastructural objects is growing. Therefore, there is a need to introduce an easy-to-use and relatively low-cost method of bridge diagnostics. We can achieve these benefits by the use of Unmanned Aerial Vehicle-Based Remote Sensing and Digital Image Processing. In our study, we present a state-of-the-art framework for Structural Health Monitoring of steel bridges that involves literature review on steel bridges health monitoring, drone route planning, image acquisition, identification of visual markers that may indicate a poor condition of the structure and determining the scope of applicability. The presented framework of image processing procedure is suitable for diagnostics of steel truss riveted bridges. In our considerations, we used photographic documentation of the Fitzpatrick Bridge located in Tallassee, Alabama, USA.

Scheduling of a Parcel Delivery System Consisting of an Aerial Drone Interacting with Public Transportation Vehicles

“…The timetable T is used here. According to our model, increasing v enlarges the delivery area of both the drone-direct scheme and drone-vehicle scheme, see (3) and (9). The final return instants for all the cases have a decreasing trend, see Figure 9a, with the increase of v. However, when v doubles, the new return instants are not half of the old values.…”

“…With the fast development of drones (also called unmanned aerial vehicles (UAVs)) technology, drones have found various applications in civilian domains [1], such as wireless communication support [2], structural health inspection [3], farming [4], surveillance and monitoring [5][6][7] and parcel delivery [8,9]. Thanks to their mobility and flexibility, many logistics companies and many advanced control approaches such as autonomous landing [10], such as Amazon, Alibaba, DHL, SF Express, etc., have started to pay more attention to the application of drones in parcel delivery.…”

Hybridization of valuation procedures as a medicine supporting the real estate market and sustainable land use development during the covid-19 pandemic and afterwards

“…elevation condition, displacement, extent of damage, their nature affecting the value of the property ( Cieślak et al, 2020a ). CRP (Close Range Photogrammetry) ( Bernat et al, 2014 ; Janowski et al, 2006 ) imaging support with Computer Vision (CV) and Machine Learning (ML) ( Koch et al, 2015 ; Marchewka et al, 2020 ) technology automates e.g. detection of crack etc.…”

Estimation of Structural Deformed Configuration for Bridges Using Multi-Response Measurement Data

“…As bridges across the world continue aging, structural health monitoring (SHM) systems are being established and operated in many developed countries [1][2][3][4][5]. In an SHM system, measurement data such as displacement, strain, acceleration, slope, temperature, and wind speed measured by each sensor are collected and managed.…”