More From Peter Dusicka & Selamawit T Mehary

OTREC-RR-12-03 By Peter Dusicka et al.
eBook (PDF): $0.00
Gusset plates connect individual steel truss bridge members together at a node. In 10% of the 200,000 steel bridges in US in 2008, failure of a single truss or connection could lead to collapse.... More > Regular inspection and load rating are essential for the safe operation and maintenance of these bridges. The Minneapolis I-35 Bridge collapse was the first gusset failure where a design flaw was implicated. Load rating gusset plates is a significant challenge given the number of connections and the complexity of accurately evaluating each one. The majority of research on gusset plate strength is from small-scale connections. More refined techniques are needed to conduct high-fidelity capacity evaluations. Finite element analysis (FEA) is widely used in structural engineering. Using FEA in gusset plate evaluation presents challenges due to the connections’ large-scale, high degree of geometric variability and complex load paths.< Less
OTREC-RR-12-03 By Peter Dusicka et al.
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Gusset plates connect individual steel truss bridge members together at a node. In 10% of the 200,000 steel bridges in US in 2008, failure of a single truss or connection could lead to collapse.... More > Regular inspection and load rating are essential for the safe operation and maintenance of these bridges. The Minneapolis I-35 Bridge collapse was the first gusset failure where a design flaw was implicated. Load rating gusset plates is a significant challenge given the number of connections and the complexity of accurately evaluating each one. The majority of research on gusset plate strength is from small-scale connections. More refined techniques are needed to conduct high-fidelity capacity evaluations. Finite element analysis (FEA) is widely used in structural engineering. Using FEA in gusset plate evaluation presents challenges due to the connections’ large-scale, high degree of geometric variability and complex load paths.< Less
OTREC-RR-11-08 By Peter Dusicka & Jeff Roberts
Paperback: $5.41
Prints in 3-5 business days
Frequently traveled roads in Oregon are in seismically active areas. Many of our bridges were designed and built to lateral demands that were assumed to be less than the current expectation, due to... More > improved awareness of seismic hazard and enhanced understanding of the non-linear response of bridges. This vulnerability to earthquakes can result in not only immediate damage, but also in the potentially lingering economic impact of disrupted traffic and freight. Fragility curves were constructed assuming lognormal capacity and demand distributions. Probability of failure was determined for slight, moderate, extensive, and complete damage. Statistical values were compared to the median and dispersion values proposed by other researchers, and calculated using guidelines from the HAZUS Technical Manual. Older multiple-span bridges were found to be significantly more fragile than the models. Through this modeling and analysis, the relative fragility of the modeled typical 3-span and 5-span bridges was determined.< Less
OTREC-TT-09-01 By Trevor D. Smith & Peter Dusicka
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