Direct Analysis of a Steel Railway Bridge via Monitoring System of an Instrumented Structure

Abstract

Railway infrastructure maintenance is essential in implementing the transportation system. Most of these railway bridges have suffered gradual deterioration over time. Predictive structural health monitoring (SHM) is required by installing instrumentation sensors on railway bridges to determine the condition of the railway bridge infrastructure at the site. This research aims to analyze and assess the existing condition of steel railway bridges to understand the load-deformation characteristics, bearing capacity, and dynamic response of the structure. This paper describes a valuable method for assessing the condition of steel railway bridges during operation. This paper presents a direct analysis of the steel railway bridge structure, with a span of 40.00 meters, a width of 4.40 meters, and a height of 6.60 meters. The steel structure railway bridge is modeled in 3D in detail, and numerical analysis is carried out using finite element analysis based on input parameters obtained from manual field measurements and instrumentation sensors. The expected result of the development of this SHM System is to know the performance of the steel railway bridge structure in real-time via the dashboard display. The results showed that the carrying capacity of the railway bridge was in a relatively safe condition. This case study may help practice engineers and researchers in future research. It can be a valuable reference for future research in developing and applying such a system to a typical case.

Online Real-Time Monitoring System of A Structural Steel Railway Bridge Using Wireless Smart Sensors

“…16, the highest natural frequency data on the X-axis is 6.250 Hz. This figure corresponds to the number generated from numerical analysis, which gives a natural frequency result of 6.103 Hz and occurs in 0.164 seconds [65]. The dynamic response of the bridge can be obtained by applying a similar analysis to the recorded accelerations during and after the passing of trains over the railway bridge.…”