Next Article in Journal
A Continuous Identity Authentication Scheme Based on Physiological and Behavioral Characteristics
Next Article in Special Issue
Visualization of Concrete Slump Flow Using the Kinect Sensor
Previous Article in Journal
Combined Layer/Particle Approaches in Surface Molecular Imprinting of Proteins: Signal Enhancement and Competition
Previous Article in Special Issue
Use of Savitzky–Golay Filter for Performances Improvement of SHM Systems Based on Neural Networks and Distributed PZT Sensors
Article Menu
Issue 1 (January) cover image

Export Article

Open AccessArticle
Sensors 2018, 18(1), 181; https://doi.org/10.3390/s18010181

Fatigue Reliability Assessment for Orthotropic Steel Decks Based on Long-Term Strain Monitoring

1
Beijing Advanced Innovation Center for Future Urban Design, Beijing University of Civil Engineering and Architecture, Beijing 100044, China
2
Weidlinger Transportation Practice, Thornton Tomasetti, Inc., New York, NY 10005, USA
*
Author to whom correspondence should be addressed.
Received: 7 December 2017 / Revised: 3 January 2018 / Accepted: 6 January 2018 / Published: 10 January 2018
Full-Text   |   PDF [2685 KB, uploaded 11 January 2018]   |  

Abstract

A time-dependent fatigue reliability assessment approach is proposed for welded details of orthotropic steel decks (OSDs) using long-term strain monitoring data. The fatigue reliability limit function of the welded details is established based on the Eurocode specifications. Depending on the distribution characteristics of the measured daily equivalent stress range, either the lognormal distribution or Gaussian mixture model (GMM) is selected to quantify its uncertainty. Subsequently, the fatigue reliability can be calculated using either an explicit formula or the Monte Carlo method. This proposed approach is applied for the fatigue reliability evaluation of two rib-to-deck and two rib-to-rib welded fatigue details of an in-service suspension bridge. The results show that the reliability indices decrease significantly with bridge’s service life. Except for a rib-to-deck detail, all other three welded details cannot meet the target fatigue reliability during this bridge’s 100-year service life. The proposed approach can help bridge owners and operators make informed decisions regarding maintenance and repair of potential fatigue cracks. View Full-Text
Keywords: orthotropic steel deck; structural health monitoring; fatigue reliability; gaussian mixture model; suspension bridge orthotropic steel deck; structural health monitoring; fatigue reliability; gaussian mixture model; suspension bridge
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Deng, Y.; Li, A.; Feng, D. Fatigue Reliability Assessment for Orthotropic Steel Decks Based on Long-Term Strain Monitoring. Sensors 2018, 18, 181.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top