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Protection contre les chutes de pierres - Balmi-Tschuggen 2015

View from the protected road of two barriers: On the line 1.1 (2000 kJ, H = 6 m) installed on the bare rock face and on the line 1.7 (2000 kJ, H = 5 m) installed on a very steep and high slope.

Protection contre les chutes de pierres - Balmi-Tschuggen 2015

Technical pre-approval of the line 1.2 (1500 kJ, H = 6 m).

Protection contre les chutes de pierres - Balmi-Tschuggen 2015

View from above the line 1.3 (1000 kJ, H = 6 m).

Protection contre les chutes de pierres - Balmi-Tschuggen 2015

In anticipation of small diameter falling rocks on the line 1.2 (1500 kJ, H = 6 m), a very fine secondary mesh was installed (25 mm x 25 mm) along with the barrier.

Protection contre les chutes de pierres - Balmi-Tschuggen 2015

View of heavy traffic and the rockfall barrier protecting the road from above the 1.2 line.

Protection contre les chutes de pierres - Balmi-Tschuggen 2015

The very same day of installation acceptance by the customer (ASTRA - Federal Roads Office), several blocks were successfully retained by the line 1.9 (2000 kJ H = 5 m, adapted to withstand snow pressure).

Protection contre les chutes de pierres - Balmi-Tschuggen 2015

View of the lines 1.9, 2.0 and 2.2 (all 2000 kJ, H = 5 or 6 m). Due to their location, they are also adapted to withstand snow pressure.

Protection contre les chutes de pierres - Balmi-Tschuggen 2015

Impact October 2019 and the protected road

Protection contre les chutes de pierres - Balmi-Tschuggen 2015

Rockfall impact October 2019

Protection contre les chutes de pierres - Balmi-Tschuggen 2015

Successful rockfall protection

Protection contre les chutes de pierres - Balmi-Tschuggen 2015

" ... blocks of about 3.5 Cubic meter ..." (Jungfrau Zeitung, November 1st, 2019)

 

Longueur du système

16 m - 80 m

 

Année d’installation

2015

Situation de départ

The existing rockfall barriers above national highway A8 over the Brünig Pass were greatly weakened after years of prevalent heavy snowfalls and had to be replaced. Therefore, the Swiss Federal Roads Office (ASTRA) in 2014 invited IMPULS AG to consult the new project (installed by Gasser Felstechnik AG).

Description

A total of eleven lines* with energy absorption capacities between 1,000 and 2,000 kJ were installed:

1000 kJ: height = 6 m, length = 30 m

1500 kJ: height = 6 m, length = 56 m

2000 kJ: height = 5 m and 6 m, length = 122 m

In addition, five lines were dimensioned for rockfall as well as for snow slide so that multi-hazard barriers  were installed:


2000
kJ: height = 5 m and 6 m, length = 139 m

* The RXI barriers used are now superseded by the RXE barriers.

Client

Bundesamt für Strassen (ASTRA)

Entrepreneur

Gasser Felstechnik AG

Objet protégé

Route/Rue

Protection anticorrosion

galvanisé

Ingénierie

IMPULS AG

Votre contact local

Kevin H. Coyle
 

Kevin H. Coyle

Regional Manager Northeast

Risques naturels
Ingénierie Hydraulique
Geobrugg North America, LLC,3 Beaudet Terr,Columbia CT 06237 / Etats-Unis Regional Manager Northeast

E-mail

Saleh Feidi
 

Saleh Feidi

Regional Manager California

Risques naturels
Ingénierie Hydraulique
Geobrugg North America, LLC,8921 Emperor Ave.,San Gabriel, California 91775 / Etats-Unis Regional Manager California

E-mail

John Kalejta
 

John Kalejta

Regional Manager Central US

Risques naturels
Ingénierie Hydraulique
Geobrugg North America, LLC,3215 67th Avenue Pl,Greeley CO 80634 / Etats-Unis Regional Manager Central US

E-mail

Bob Lyne
 

Bob Lyne

Regional Manager Southeast

Risques naturels
Ingénierie Hydraulique
Geobrugg North America, LLC,8004 Windspray Drive,Summerfield NC 27358 / Etats-Unis Regional Manager Southeast

E-mail

Pierce Runnels, Civil Engineer
   

Pierce Runnels

General Manager Geobrugg North America

Risques naturels
Geobrugg North America, LLC,22 Centro Algodones , Civil Engineer General Manager Geobrugg North America

E-mail

Tim Shevlin
 

Tim Shevlin

Sales Director

Risques naturels
Geobrugg North America, LLC,Salem OR 97302 / Etats-Unis Sales Director

E-mail