{"id":32350,"date":"2026-06-16T12:29:33","date_gmt":"2026-06-16T10:29:33","guid":{"rendered":"https:\/\/www.bessac.com\/?p=32350"},"modified":"2026-06-16T12:31:23","modified_gmt":"2026-06-16T10:31:23","slug":"grand-paris-express-line-15-east-north-soletanche-bachy-mobilised-across-three-strategic-stations","status":"publish","type":"post","link":"https:\/\/www.bessac.com\/en\/grand-paris-express-line-15-east-north-soletanche-bachy-mobilised-across-three-strategic-stations\/","title":{"rendered":"Grand Paris Express \u2013 Line 15 East North: Soletanche Bachy mobilised across three strategic stations"},"content":{"rendered":"

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Grand Paris Express \u2013 Line 15 East North: Soletanche Bachy mobilised across three strategic stations<\/p>\n<\/div>

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As part of the IRIS joint venture, the teams of Soletanche Bachy France, BESSAC and Soletanche Bachy Tunnels are working on three stations of Line 15 East of the Grand Paris Express, in Seine-Saint-Denis. Each construction site has its own technical constraints and demands a high level of precision.<\/strong><\/span><\/div>\n<\/div>
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Drancy \u2013 Bobigny Station<\/strong><\/span><\/span><\/p>\n

The first station to be launched, it is also the first to be delivered in diaphragm walls in early March. The works mobilised 1,500 tonnes of steel for 15,150 m\u00b2 excavated, with a 3-metre embedment into the coarse limestone. The TBM will pass through an “empty box” in roughly a year’s time, following the completion of part of the station’s permanent structures, built using the top-down method under the protection of the diaphragm walls.<\/span><\/span><\/p>\n<\/div>

Fort d’Aubervilliers Station<\/strong><\/span><\/span><\/p>\n

The diaphragm walls of this second station are nearing completion. In total, 17,800 m\u00b2 have been excavated and 1,800 tonnes of steel installed. Before civil works begin \u2014 also planned using the top-down method in autumn \u2014 the demobilisation of diaphragm wall equipment is getting underway in parallel with a pumping test scheduled for early summer, which will determine whether or not a grouted base slab is required.<\/span><\/span><\/p>\n<\/div>

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Mairie d’Aubervilliers Station<\/strong><\/span><\/span><\/p>\n

The deepest station on Line 15 East North, located just a few metres from the town hall, it requires diaphragm walls reaching 56 metres in depth, embedded in the coarse limestone to approximately 15 m, for a total excavated area of 21,000 m\u00b2 and a total of 2,500 tonnes of steel installed. The TBM will pass through a “full box” this summer, while the diaphragm walls will not yet be fully completed. Another distinctive feature of this station is the installation of 8 pre-founded columns using heavy-duty PRS sections (600 t), anchored in foundation barrettes.\u00a0<\/span><\/span><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

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Congratulations to the teams on these projects!<\/strong><\/span><\/span><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div><\/div><\/div><\/div><\/div>

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