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Washington Park Reservoir Improvements: Accommodating Ancient Landslide Movement with a Compressible Inclusion
The Portland Water Bureau (PWB), until recently, had operated two open drinking water reservoirs at Washington Park, located in Portland, Oregon. The open reservoirs were part of a gravity-fed water system constructed during the 1890s. During original construction at the site, a large ancient landslide was re-activated. A project to improve the reliability and protection for the water supply is currently in progress, and includes a buried 12.4-million gallon (47 M liter) concrete reservoir. When completed, the project will provide a seismically resilient supply of drinking water to 360,000 people, including all of downtown Portland. The buried reservoir will be isolated from continued landslide movements using an innovative compressible inclusion. The compressible inclusion will deform in response to continued landslide movement, and in turn will impart relatively small, predictable loads on the buried reservoir walls. During a seismic event, the compressible inclusion will absorb landslide displacement as well as dampen reservoir displacements, reducing the demands on drilled shaft foundations and reservoir walls.
Washington Park Reservoir Improvements: Accommodating Ancient Landslide Movement with a Compressible Inclusion
The Portland Water Bureau (PWB), until recently, had operated two open drinking water reservoirs at Washington Park, located in Portland, Oregon. The open reservoirs were part of a gravity-fed water system constructed during the 1890s. During original construction at the site, a large ancient landslide was re-activated. A project to improve the reliability and protection for the water supply is currently in progress, and includes a buried 12.4-million gallon (47 M liter) concrete reservoir. When completed, the project will provide a seismically resilient supply of drinking water to 360,000 people, including all of downtown Portland. The buried reservoir will be isolated from continued landslide movements using an innovative compressible inclusion. The compressible inclusion will deform in response to continued landslide movement, and in turn will impart relatively small, predictable loads on the buried reservoir walls. During a seismic event, the compressible inclusion will absorb landslide displacement as well as dampen reservoir displacements, reducing the demands on drilled shaft foundations and reservoir walls.
Washington Park Reservoir Improvements: Accommodating Ancient Landslide Movement with a Compressible Inclusion
Westover, Thomas (author) / Hogan, Dan (author) / Heslin, Gerry (author) / Kost, Andrew (author)
Geo-Congress 2020 ; 2020 ; Minneapolis, Minnesota
Geo-Congress 2020 ; 128-141
2020-02-21
Conference paper
Electronic Resource
English
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