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Cascade Mountain, US Highway 12

边坡稳定 - Cascade Mountain, US Highway 12 2017

Rolled cable net (S4-250) / Cable Net drape with DELTAX® G80/2 mm wire mesh backing

边坡稳定 - Cascade Mountain, US Highway 12 2017

Antiquated, traditional cable nets being replaced

边坡稳定 - Cascade Mountain, US Highway 12 2017

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.

边坡稳定 - Cascade Mountain, US Highway 12 2017

System is less than one year old and has taken a beating, according to WSDOT personnel. It's reported that the mesh and the rope and hardware infrastructure is holding up well.

边坡稳定 - Cascade Mountain, US Highway 12 2017

Detail of olled Cable Net and DELTAX® after the impact

 

安装年份

2017

情况

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).

地質學

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.)

描述

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.

客户

Washington State Department of Transportation

工程

Washington State Department of Transportation

承包商

Hi-Tech Rockfall Construction, Inc.

防护对象

Road

腐蚀保护

GEOBRUGG SUPERCOATING

本地联系方式

Kevin Coyle
 

Kevin Coyle

Regional Manager Northeast

自然災害防護
Hydraulic Engineering
Geobrugg North America, LLC,3 Beaudet Terr,CT 06237 Columbia / 美国 Regional Manager Northeast

联系地址

Saleh Feidi
 

Saleh Feidi

自然災害防護
Hydraulic Engineering
Geobrugg North America, LLC,8921 Emperor Ave.,91775 San Gabriel, California / 美国

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John Kalejta
 

John Kalejta

自然災害防護
Hydraulic Engineering
Geobrugg North America, LLC,KS 67226 Wichita / 美国

联系地址

Bob Lyne
 

Bob Lyne

自然災害防護
Hydraulic Engineering
Geobrugg North America, LLC,8004 Windspray Drive,NC 27358 Summerfield / 美国

联系地址

Pierce Runnels, Civil Engineer
   

Pierce Runnels

General Manager Geobrugg North America

自然災害防護
Geobrugg North America, LLC,22 Centro Algodones , Civil Engineer General Manager Geobrugg North America

联系地址

Tim Shevlin
 

Tim Shevlin

自然災害防護
Geobrugg North America, LLC,OR 97302 Salem / 美国

联系地址