Soil improvement works for an offshore land reclamation
Soil improvement works for an offshore land reclamation
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DOI：
10.1680/geng.2009.162.1.21
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发表时间：
2009-02
期刊：
影响因子：
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通讯作者：
J. Chu;M. W. Bo;A. Arulrajah
中科院分区：
文献类型：
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作者：
J. Chu;M. W. Bo;A. Arulrajah
樟宜东填海工程是沿新加坡东海岸前滨分五期进行。填海区的水深为5至15米。该项目涉及在50米厚的海底软粘土上水力放置2.72亿立方米的沙子。为了加速下垫软海相粘土的固结过程，安装了共计170,000公里的预制垂直排水管（PVDs）。土壤改良工程的总面积约为1200公顷。本文介绍了现场条件和采用的土壤改良工程。利用全尺寸现场仪器、实验室和现场试验进行了中试，以验证设计，检查使用PVDs进行土壤改良工程的有效性，并确定最合适的排水间距。介绍和解释了从试验试验和填海工程中获得的实地监测数据。固结度计算为…
The Changi East reclamation project was carried out in five phases along the foreshore of the east coast of Singapore. The water depths in the reclaimed area ranged from 5 to 15 m. The project involved hydraulic placement of 272 million m3 of sand onto soft seabed marine clay up to 50 m thick. A linear total of 170,000 km of prefabricated vertical drains (PVDs) were installed for accelerating the consolidation process of the underlying soft marine clay. The soil improvement works covered a total area of approximately 1200 ha. In this paper, the site conditions and the soil improvement works adopted are described. Pilot tests with full-scale field instrumentations as well as laboratory and in situ tests were carried out to verify the design, check the effectiveness of the soil improvement works using PVDs, and establish the most suitable drain spacing. Field monitoring data obtained from both the pilot tests and the reclamation works are presented and interpreted. Degree of consolidation was calculated bas...