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- Bridges -- Retrofitting -- Oregon -- Case studies (1)
- Buckling (Mechanics) (1)
- Concrete bridges -- Earthquake effects (1)
- Damping (Mechanics) (1)
- Earthquake resistant design (1)
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- Electric insulators and insulation -- Testing (1)
- Electric transformers -- Earthquake effects (1)
- Gaskets (1)
- Left-turn lanes (1)
- Reinforced concrete -- Earthquake effects (1)
- Reinforced concrete construction -- Design and construction (1)
- Roads -- Interchanges and intersections -- Design (1)
- Traffic calming (1)
- Traffic circles (1)
- Traffic circles -- California -- San Diego -- Design and construction -- Case studies (1)
- Transportation corridors -- Safety measures (1)
Articles 1 - 3 of 3
Full-Text Articles in Engineering
Seismic Retrofit Case Study Of Reinforced Concrete Bridges With Buckling Restrained Braces, Michael K. Miotke
Seismic Retrofit Case Study Of Reinforced Concrete Bridges With Buckling Restrained Braces, Michael K. Miotke
Civil and Environmental Engineering Master's Project Reports
Many highway bridges in Oregon have been designed with minimal considerations for seismic hazard and are in need of retrofit. Although buckling restrained braces (BRBs) are not necessarily a new concept, using them to seismically retrofit bridges is. This case study investigates the BRB retrofit concept as compared to traditional retrofit measures for a sample of typical vulnerable bridges in Oregon. The objectives of evaluating these cases were to determine the feasibility of the concept both in terms of performance as well as construction costs. This study builds on the ongoing research at Portland State University into the development of …
Seismic Evaluation Of 196kv Transformer Bushings, Joanne R. Shields
Seismic Evaluation Of 196kv Transformer Bushings, Joanne R. Shields
Civil and Environmental Engineering Master's Project Reports
Transformer bushings have shown to have an unsatisfactory performance during earthquakes and have therefore been chosen for further testing. How the bushings fail, and how this failure can be prevented has been analyzed. Two used 196 kV bushings made by General Electric were chosen for seismic testing at the iSTAR laboratory located at Portland State University in Portland, OR. The multiple objectives that brought about these tests were: to determine how the bushings failed due to gasket extrusion at the porcelain-flange connection and to verify that the failure was due to pure tipping and not sliding, to determine the damping …
Feasibility Determination Guide For The Road Diet Plus: A Five/Four-Lane To Two-Lane Road Diet, Michael Williams
Feasibility Determination Guide For The Road Diet Plus: A Five/Four-Lane To Two-Lane Road Diet, Michael Williams
Civil and Environmental Engineering Master's Project Reports
Road diets are a popular tool for corridor improvement. Road diets are normally defined as the conversion of a four-lane undivided road to a three-lane undivided road made up of two through lanes separated by a center two-way-left-turn-lane (known as a TWLTL). This new configuration has similar vehicular capacity, greater safety and frees up right-of-way for other uses.
This work examines the possibility of going one step, or one lane, further. What is the possibility of reducing five- or four-lane roads to two-lanes? If this is possible, what are the corridor characteristics within which this process would be feasible?
The …