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原文传递 LARGE SCALE SOIL IMPROVEMENT IN THE ZEEBRUGGE OUTER HARBOUR

题名：	LARGE SCALE SOIL IMPROVEMENT IN THE ZEEBRUGGE OUTER HARBOUR
作者：	G. GYSELYNCK; J. MAERTENS; W. VAN ALBOOM; L. VAN DAMME; G. WELLENS
关键词：	OUTER HARBOUR; SOIL IMPROVEMENT
摘要：	For the development of a quay wall on the south side of the Wielingen dock in the outer harbour of Zeebrugge, a huge area has been reclaimed by hydraulic filling. This work raised the levels from about –10.00 m TAW to +8.00 TAW, in an area where the tide normally ranges around about 5 meters. Water depths to -15.00 m TAW allow for the loading and unloading of paper for the paper industry. Behind the cargo handling area a large number of warehouses was built (transit and short stay warehouses, distribution 1 and 2). Reclamation works started about January 1999 and by the spring of 2001 about 40.000 m2 of warehouses were built. The record period of construction necessitated from the very start the availability of a fill with adequate deformation-free load bearing qualities. The hydraulic fill was primarily subject to two types of deficiencies, being on the one hand the inclusion of soft cohesive silt and peat layers, and on the other the insufficient density of the sand layers. Several soil improvement techniques were put at work, depending on the in situ soil profile, and depending on the time available: the two most important were dynamic compaction and accelerated consolidation under preloading. The evaluation of the performance of the soil improvement techniques was monitored through the continuous execution of cone tests. The consolidation under the pre-load was checked by settlement and pore pressure measurements. A large number of settlement measurements were executed through PE-tubes installed under the applied fill. This allowed to judge the settlement evolution in time and adjust the numerical model to come to a more accurate prediction of the consolidation period. At its extreme, the total settlement mounted up to about 2 meters. In the post-construction period, the settlements of the warehouses will be monitored by measurement on a grid of reference points, fixed to well-chosen structural elements.
总页数：	Proceedings of the 30th PIANC-AIPCN Congress. Sydney Australia. 22-26 Sept. 2002. pp16
报告类型：	科技报告