CDC Compaction at Berth 9 Quay Extension Felixstowe, UK
详细信息 查看全文
- 作者：J.W. Vink ; jan-willem.vink@cofra.com" class="auth_mail" title="E-mail the corresponding author ; J.W. Dijkstra
- 关键词：Cofra Dynamic Compaction ; CDC ; Rapid Impact Compaction ; RIC ; Compaction ; granular soil ; sand ; densification ; heavy tamping
- 刊名：Procedia Engineering
- 出版年：2016
- 出版时间：2016
- 年：2016
- 卷：143
- 期：Complete
- 页码：1468-1476
- 全文大小：1548 K
文摘
In February 2015 Cofra Dynamic Compaction (CDC), a heavy Rapid Impact Compaction (RIC) technique to compact granular subsoil, was performed on the Berth 9 Quay Extension project in Felixstowe, UK. The extension consists of a 15.000m2 reclamation between sheet pile walls. The compaction of the reclamation was required to reduce future settlements and improve the properties of the sand behind the quay wall. An extensive compaction trial was performed before the start of the project to assess the compaction procedures and work method in relation to the specifications but also to assess the impact of the compaction on the Quay wall. Compaction effort was monitored during compaction with the use of the crane monitoring system which registers the (induced) settlement with increasing blows. The effect of the compaction has been measured with the use of pre- and post-compaction CPT's. The main quay wall displacements were continuously monitored by a manual station and a robotic total station. During the trial an inclinometer was used to gather more data. The paper focusses on the gathered data, findings and observations during the project and the compaction trials.