A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Nondestructive Testing and Identification for Bridge Rating. Phase 2. Steel-Stringer Bridges
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 bridge 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 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.
Nondestructive Testing and Identification for Bridge Rating. Phase 2. Steel-Stringer Bridges
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 bridge 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 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.
Nondestructive Testing and Identification for Bridge Rating. Phase 2. Steel-Stringer Bridges
A. E. Aktan (author) / C. Chuntavan (author) / K. L. Lee (author) / D. N. Farhey (author)
1994
268 pages
Report
No indication
English
Highway Engineering , Quality Control & Reliability , Industrial & Mechanical Engineering , Nondestructive tests , Steel structures , Bridge inspection , Structural analysis , Finite element analysis , Composite structures , Bridge design , Design analysis , Structural failure , Impact tests , Bridge maintenance , System identification , Loads(Forces) , Eigenvalues , Bridge tests , Steel stringer bridges
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