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  3. Trimbergtunnel, Highway A44

Trimbergtunnel, Highway A44, Hesse, Germany

TUNNELLING & MINING SYSTEMS

 

Project:
Trimbergtunnel, Highway A44, Hesse, Germany

 

Construction Period:
2018 - 2019

 

Owner:
Federal Republic of Germany, represented by DEGES

 

Main contractor:
ARGE Tunnel Trimberg, Hochtief Infrastructure GmbH und
Ed. Züblin AG, Direktion im Tunnelbau

 

Scope of supply:
High strength SN Anchors SAS 900 / 1050 SN Ø 18,6, length 4.0 m and 6.0 m

 

Application:
The Trimberg tunnel is part of construction phase 9 and part of the new construction of BAB 44. As a cross-connection of the A7 motorway near Kassel and the A4 near Herleshausen, the A44 with the Trimberg tunnel relieves the suburban road network from trans-regional transit traffic and connects the region to the nationwide trunk road network.
The Trimberg tunnel consists of two tubes of 600 m - each of which 440 m are driven by mining in cyclic method. The tunneling intersects the new red sandstone the so called Bernburg sequence and is executed in shotcrete construction by excavator driving and blasting. To secure the excavation section while the new high-strength SAS SN anchors are used.
Among the advantages of the high-strength SAS SN anchors, in addition to the possibility of rough handling on the construction site and their length flexibility due to the endless coarse thread, is, above all, a 44 % weight reduction compared to conventional products, which allow manual setting even of longer installation lengths. Especially in connection with the physical workload, the new development of the Stahlwerk Annahütte steelworks contributes to significant improvements.

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