TY  - JOUR
PY  - 1974//
TI  - Assessment of fatigue life of a steel girder bridge in service
JO  - Transportation research record
A1  - Csagoly, Paul
A1  - Cicci, Fernando
SP  - 26
EP  - 44
VL  - 507
IS  - 
N2  - To assess the fatigue life of welded, cover-plated steel girders, strain gauges were placed in critical locations on the superstructure of the Leslie Street overpass on the Toronto Bypass. Data were gathered for 200 hours in 12-hour continuous tape recording sessions. Analysis of the data revealed that normal traffic caused a live-load stress peak of 4,000 psi (2757 MPa) only once in 10 hours, which is less than 50 percent design live-load stress. Stress data gathered by various agencies during the past few years seem to indicate that either design stress does not occur at all or it occurs with such a low frequency that the development of any fatigue situation is precluded. The phenomenon is associated with the low probability of the simultaneous, multiple presence of loaded commercial vehicles on a structure. The problem is therefore statistical in nature. Its recognition appears to be in conflict with the prevailing concept used in fatigue consideration of highway bridges.<p /> <p>Language: en</p>
LA  - en
SN  - 0361-1981
UR  - http://dx.doi.org/
ID  - ref1
ER  -