Volker Stevin Ltd (VSL) has been commissioned by Align JV to install approximately 394 no. tubular piles over four different jetties required for the construction of the HS2 Colne Valley Viaduct.
Align is a joint venture of Bouygues Travaux Publics, Sir Robert McAlpine, and VolkerFitzpatrick that has been contracted by HS2 to deliver the Central 1 portion of HS2 phase 1, which includes the 3.4km viaduct over the Colne Valley.
Geobest carried out driveability analyses for the above mentioned piles. All steel tubular piles, of different dimensions and penetration lengths, will be installed in hard chalk layers. By means of preliminary soil investigations in the initial phase, the expected pile resistance (SRD) was mapped out. In the second phase, on the basis of an extensive soil investigation campaign and the results of two pile tests, the expected pile resistance was adjusted and the driving analyses were finalised.
The pile driving will take approximately one year. The beginning of the work is scheduled for May 2021.