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Umbrella Arching and Compensation Grouting in Order to Protect Settlement-Sensitive Buildings over Large Shotcrete Excavations in Gravel
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作者 Habil.Jochen Fillibeck Andy Klinger +1 位作者 Martin Sailer Stephan Geuder 《Journal of Civil Engineering and Architecture》 2022年第2期53-66,共14页
The Tunnel Oberau, with a length of 2.9 km, forms the core of the local bypass of Oberau. Between the two massifs Kirchbichl and Mühlberg, the tunnel is situated in the valley of the Gießenbach in alluvial g... The Tunnel Oberau, with a length of 2.9 km, forms the core of the local bypass of Oberau. Between the two massifs Kirchbichl and Mühlberg, the tunnel is situated in the valley of the Gießenbach in alluvial gravel with only a small overlap underneath settlement-sensitive buildings. In this paper, the measures in the tunnel to minimize the settlements of the buildings during the shotcrete excavations are described. Basis for this planning were extensive 3D-FE-calculations. Furthermore, under two buildings a compensation grouting measure was carried out, in order to compensate the occurring settlements. This paper describes how the required time and the amount of injection material (grout) could be reduced during the compensation grouting in highly permeable gravel. 展开更多
关键词 Umbrella arching shotcrete excavation compensation grouting excavation in gravel
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