Book
Nondestructive testing and identification for bridge rating. Phase 2, steel-stringer bridges
01 Apr 1994
Abstract
Nondestructive dynamic field testing and structural identification studies on three (2, 20, and 43-years old) steel-stringer bridges are presented. The bridges were rated by code procedures and by field-calibrated comprehensive 3-D finite-element models developed by structural identification. Experimentally measured and analytically simulated modal flexibilities were correlated with bridge deflections obtained under proof-load level truck-load tests. Test results indicated that all three bridges, although constructed as noncomposite, exhibited composite action between the slab and girders. While the composite action was near-perfect in the 2-year-old bridge, the older bridges exhibited partially-composite behavior due to deterioration of the chemical bond and friction. The rating factors obtained by field-calibrated models exceeded the corresponding operating rating factors by about two and a half to four times for the three test bridges. The rating process and the resulting factors helped to identify and conceptualize a number of unresolved important issues that influence bridge rating and management.
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Details
- Title
- Nondestructive testing and identification for bridge rating. Phase 2, steel-stringer bridges
- Creators
- A Aktan
- Resource Type
- Book
- Language
- English
- Academic Unit
- [Retired Faculty]; College of Engineering
- Identifiers
- 991020705465204721