Full-scale reinforced concrete bridge bent condition assessment using forced vibration testing

Jeremy L. Achter; Marvin W. Halling; Kevin C. Womack

doi:10.1117/12.387831

9 June 2000 Full-scale reinforced concrete bridge bent condition assessment using forced vibration testing

Jeremy L. Achter, Marvin W. Halling, Kevin C. Womack

Proceedings Volume 3995, Nondestructive Evaluation of Highways, Utilities, and Pipelines IV; (2000) https://doi.org/10.1117/12.387831
Event: SPIE's 5th Annual International Symposium on Nondestructive Evaluation and Health Monitoring of Aging Infrastructure, 2000, Newport Beach, CA, United States

Abstract

Recent research has been conducted at Utah State University regarding the ability to assess the condition of a reinforced concrete bridge bent. Three full-scale, in-situ, reinforced concrete bridge bents were tested and modeled through varying states of damage. Each bent was initially tested in an undamaged state using a horizontal sine-sweep test. The forced-vibration testing was achieved using an eccentric mass shaker. The structures were tested in the frequencies ranging from 1.0 Hz to 20.0 Hz in increments of 0.05 Hz. A known amount of damage was inflicted upon each bent for two separate states. The sine-sweep test was re-administered for each damage state. The changes in dynamic characteristics, such as frequencies and mode shapes, were noted from state to state. Detailed finite element models were constructed to match the changes in dynamic characteristics of each bent for each state. This was achieved by matching the severity and location of the structural damage of the model to the field structures. Decreases in structural stiffness were detected with modal analysis. The models were consistent in matching the changes of the field structures. A method was devised for locating possible regions of structural damage.

Citation Download Citation

Jeremy L. Achter, Marvin W. Halling, and Kevin C. Womack "Full-scale reinforced concrete bridge bent condition assessment using forced vibration testing", Proc. SPIE 3995, Nondestructive Evaluation of Highways, Utilities, and Pipelines IV, (9 June 2000); https://doi.org/10.1117/12.387831

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available