アメリカ合衆国
アメリカ合衆国

myGeobrugg

衝撃対策 - Anchor reinforcement motorway tunnel 2008

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衝撃対策 - Anchor reinforcement motorway tunnel 2008

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衝撃対策 - Anchor reinforcement motorway tunnel 2008

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設置年

2008

状況

-

説明

Some of the tie bars in the vicinity of a gravity wall have corrosion problems. These corrosion problems can result in tie bars suddenly fracturing – brittle fracture – and flying into the clearance gage profi le of the adjacent freeway lane. The aim of an elaboration was to brake the tie bars at a relatively short distance, preventing them from penetrating the lane space. Geobrugg’s answer comprises a high-tensile steel wire mesh stretched in front of the 64 tie bar heads and provided with four braking rods, two at the top and two at the bottom. The ingenious interaction of this mesh and the specially designed braking system permitted a reduction in kinetic energy of up to 30 kJ for a defl ection of only 40 cm. Use is made here of the specifi c material properties of the utilized steel (very high dynamic- plastic deformation capability).

顧客名

Federal Road Office Astra

エンジニアリング

Geobrugg AG

保護対象

その他

担当者の連絡先

Ivo Naef
 

Ivo Naef

Sales Manager Safety Solutions

衝撃防護
Geobrugg AG,Aachstrasse 11,8590 Romanshorn / スイス Sales Manager Safety Solutions

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