GEOHAZARD - FOLLOW US

Etats-Unis
A BRUGG GROUP COMPANY
Etats-Unis

Kaikoura State Highway 1 (SR1-2)

Kaikoura SH1, 7343, Peketa Kaikoura, Nouvelle-Zélande
2019
Client
NCTIR and NZTA
Entrepreneur
Rock Control
Objet protégé
Route/Rue
Classe énergétique
500 kJ
Hauteur du système
3.0 m
Longueur du système
100 m
Protection anticorrosion
GEOBRUGG ULTRACOATING®
Situation de départ

The Kaikoura M7.8 earthquake caused widespread damage to the road and rail corridor for approximately 20 km North and South of the Kaikoura township. Over forty major slips inundated the road and rail with more than 750'000 m³ of material from source zones up to 500 meters above sea level.  The highly fractured Grey Wacke means frequent future rockfalls and debris loads. The high rockfall frequency created the requirement for a geohazard solution at Site 1-2.

Description

The original design and installation was a 50 meters long 3 meters high GBE-500A barrier. After installation, the decision was made to install an additional 50 meters of barrier to protect the highway further. The system was easily extended by upgrading the northernmost post to a support rope separation with no material wastage.


The GBA-500A is a hinged post system. The barrier has upslope anchors, which reduce the post foundation forces and therefore minimise impact to the precast concrete wall and shotcrete retaining walls below. The rockfall barrier used a 10 meters post spacing, had two downslope anchors due to a curved alinement and as previously mentioned was split into two sections with a support rope separation. Due to the highly fractured rock mass, self-drilling anchors were required. Geobrugg type II flex heads transfer the loads to the bar anchors. The mesh was ultra-coated due to its proximity to the sea.

Votre contact local

Kevin H. Coyle
Kevin H. Coyle
Regional Manager Northeast
Natural Hazards
Geobrugg North America, LLC
3 Beaudet Terr
Columbia CT 06237 / Etats-Unis
Téléphone +1 860 377 3230

Contact form

Saleh Feidi
Saleh Feidi
Regional Manager California
Natural Hazards
Geobrugg North America, LLC
8921 Emperor Ave.
San Gabriel, California 91775 / Etats-Unis
Téléphone +1 909 706 8964

Contact form

John Kalejta
John Kalejta
Regional Manager Central US
Natural Hazards
Geobrugg North America, LLC
3215 67th Avenue Pl
Greeley CO 80634 / Etats-Unis
Téléphone +1 505 220 1404

Contact form

Bob Lyne
Bob Lyne
Regional Manager Southeast
Natural Hazards
Geobrugg North America, LLC
8004 Windspray Drive
Summerfield NC 27358 / Etats-Unis
Téléphone +1 336 337 0945

Contact form

Pierce Runnels, Civil Engineer
Pierce Runnels, Civil Engineer
General Manager Geobrugg North America
Natural Hazards
Geobrugg North America, LLC
22 Centro Algodones
Téléphone +1 505 771 4080
Mobile +1 505 400 0796

Contact form

Tim Shevlin
Tim Shevlin
Sales Director
Natural Hazards
Geobrugg North America, LLC
4676 Commercial St. SE, PMB 174
Salem OR 97302 / Etats-Unis
Téléphone +1 503 423 7258

Contact form