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Engineering Commons

Open Access. Powered by Scholars. Published by Universities.®

2019

Missouri University of Science and Technology

Series

INSPIRE Archived Webinars

Articles 1 - 3 of 3

Full-Text Articles in Engineering

Data To Risk-Informed Decisions Through Bridge Model Updating, Iris Tien Sep 2019

Data To Risk-Informed Decisions Through Bridge Model Updating, Iris Tien

INSPIRE Archived Webinars

Across the country, bridge structures are aging with use commonly extending beyond their original design lives. Decisions to repair, retrofit or rehabilitate these structures will support continued reliability and resilience of these structures. To better understand the states of the bridges at any point in time, there are new technologies to inspect, monitor and assess bridge conditions.

To effectively use the results of these inspections and monitoring activities, we need an understanding of the relation between varying inspection parameters and the predicted performance of bridge structures.

In this seminar, we will describe methods to use inspection data to update assessment ...


Performance Based Design For Bridge Piers Impacted By Heavy Trucks, Anil K. Agrawal Jun 2019

Performance Based Design For Bridge Piers Impacted By Heavy Trucks, Anil K. Agrawal

INSPIRE Archived Webinars

Based on bridge failure data compiled by New York State Department of Transportation, collision, both caused by vessel and vehicles, is the second leading cause of bridge failures after hydraulic. Current AASHTO-LRFD (2012) recommends designing a bridge pier vulnerable to vehicular impacts for an equivalent static force of 600 kips (2,670 kN) applied in a horizontal plane at a distance of 5.0 feet above the ground level. This research presents a performance-based approach for designing a bridge pier subject to impacts by tractor-semi-trailer weighing up to 80,000 lb based on an extensive investigation using finite element model ...


Battery-Free Wireless Strain Measurement Using An Antenna Sensor, Yang Wang Mar 2019

Battery-Free Wireless Strain Measurement Using An Antenna Sensor, Yang Wang

INSPIRE Archived Webinars

A battery-free antenna sensor can wirelessly measure strain on a structure. Bonded to the surface of a base structure, the antenna sensor deforms when the structure is under strain, causing the antenna’s electromagnetic resonance frequency to change. This resonance frequency change can be wirelessly interrogated and recorded by a reader through electromagnetic backscattering. A radio frequency identification (RFID) chip on the sensor harnesses a small amount of energy from the interrogation signal and responds to the reader. The resonance frequency change identified by the reader is then used to determine the strain applied on the structure. The latest antenna ...