Thermomechanical analysis of the Kishwaukee Bridge from global and local deformation measurements

George M. Lloyd; Ming L. Wang; Xuan Wang

doi:10.1117/12.540215

29 July 2004 Thermomechanical analysis of the Kishwaukee Bridge from global and local deformation measurements

George M. Lloyd, Ming L. Wang, Xuan Wang

Proceedings Volume 5391, Smart Structures and Materials 2004: Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems; (2004) https://doi.org/10.1117/12.540215
Event: Smart Structures and Materials, 2004, San Diego, CA, United States

Abstract

The Kishwaukee bridge (circa 1979) is a five-span pre-cast post-tensioned segmental concrete box girder bridge. The structure has been under increasingly stringent inspection since extensive cracking adjacent to the piers in the webs was observed. There is limited observational evidence that continued propagation of the cracks has been occurring, and static load testing of the structure in 2000 provided direct indications of locally excessive stresses in the shear reinforcement. Since that time, the authors have developed instrumentation which continuously monitors the bridge. Our previous thermal analyses and modeling based upon the data collected demonstrates that thermal equilibrium is rare for this structure, a situation that undoubtably applies to most bridges of this type. Partly due to this constant disequilibrium, basing alarm criteria on real time measurements is untenable. In this paper we develop a two-step monitoring strategy which can be applied to both global and local deformation data. The strategy is based on preliminary modeling to identify the thermomechanical influences, followed by a second step using a bootstrap comparator.

Citation Download Citation

George M. Lloyd, Ming L. Wang, and Xuan Wang "Thermomechanical analysis of the Kishwaukee Bridge from global and local deformation measurements", Proc. SPIE 5391, Smart Structures and Materials 2004: Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems, (29 July 2004); https://doi.org/10.1117/12.540215

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

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
6 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Bridges

Data modeling

Sensors

Thermal modeling

Statistical analysis

Temperature metrology

Inspection

Show All Keywords

Keywords/Phrases

Search In:

Publication Years