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A BRUGG GROUP COMPANY
США

Cascade Mountain, US Highway 12

US-12, 98937, 48935 US-12, Naches, WA 98937, США
2017
DELTAX® G80/2 Специальные решения Rolled Cable Net (US only)
Клиент
Washington State Department of Transportation
Проектировщик
Washington State Department of Transportation
Подрядчик
Hi-Tech Rockfall Construction, Inc.
Защищаемый объект
Дорога
Защита от коррозии
GEOBRUGG SUPERCOATING®
Площадь укрепления
780 m²
Высота склона
25 m
Уклон
70 ° - 85 °
Экспозиция
-
Rеология

White Pass Scenic Byway and was featured in Newell Campbell’s geologic road guide (1975) (Fig. H-1). The byway passes through one of the most scenic and geologically interesting areas in Washington. There are tens of volcanic centers that range in age from earliest Miocene to Pleistocene. Late Paleozoic/Mesozoic sedimentary rocks and metamorphic rocks, glacial deposits, and large active landslides are also exposed along the way. The Russell Ranch Formation is exposed near MP 148 along US 12. The Russell Ranch unit includes marine sedimentary and volcanic rocks that are at least in part of Late Jurassic and Early Cretaceous age (~145–130 Ma).  Numerous Quarternary landslide and talus Deposits are also 

From INFORMATION CIRCULAR 107 (Pringle, et al.)

Ситуация

US Highway 12 is the Southern most pass that crosses the Cascade Mountain in the state of Washington, USA.  Numerous slopes near White Pass are active rockfall areas.  They have been mitigated over the decades with many solutions including numerous draped mesh systems composed of traditional cable nets.  One such antiquated cable net drape at MP 152 was draped across a rockfall chute and in 2017 was destroyed by severe rock and snow slides.  The Washington Department of Transportation decided to update the system with the stronger and improved Rolled Cable Nets (S4-250).

Описание

Geobrugg worked with the Washington Department of Transportation assisting them in creating a robust Rolled Cable Net drape. The updated drape included upsized and redundant support rope infrastructure. The support rope and flexible wire rope cable anchors were made of 1-1/8" ropes having 130 kip ultimate strength.  The Rolled Cable Nets (S4-250) being 30 % stronger than the nets being replaced were chosen as they performed well in another nearby installation. Hi-Tech Rockfall Construction, Inc. performed scaling at the site and quickly installed the large Rolled Cable Net panels.

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Kevin H. Coyle
Kevin H. Coyle
Regional Manager Northeast
Инженерная защита
Geobrugg North America, LLC
3 Beaudet Terr
Columbia CT 06237 / США
Телефон +1 860 377 3230

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Saleh Feidi
Saleh Feidi
Regional Manager California
Инженерная защита
Geobrugg North America, LLC
8921 Emperor Ave.
San Gabriel, California 91775 / США
Телефон +1 909 706 8964

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John Kalejta
John Kalejta
Regional Manager Central US
Инженерная защита
Geobrugg North America, LLC
3215 67th Avenue Pl
Greeley CO 80634 / США
Телефон +1 505 220 1404

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Bob Lyne
Bob Lyne
Regional Manager Southeast
Инженерная защита
Geobrugg North America, LLC
8004 Windspray Drive
Summerfield NC 27358 / США
Телефон +1 336 337 0945

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Pierce Runnels, Civil Engineer
Pierce Runnels, Civil Engineer
General Manager Geobrugg North America
Инженерная защита
Geobrugg North America, LLC
22 Centro Algodones
Телефон +1 505 771 4080
Мобильный +1 505 400 0796

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Tim Shevlin
Tim Shevlin
Sales Director
Инженерная защита
Geobrugg North America, LLC
4676 Commercial St. SE, PMB 174
Salem OR 97302 / США
Телефон +1 503 423 7258

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