The proposed 210-hectare Craney Island Eastward Expansion (and its subsequent development as a container terminal) in Portsmouth, Virginia is the largest port-development land reclamation ever proposed along the eastern U.S. coast. The shallow water site is underlain by substantial (25- to 40-meter-thick) deposits of highly compressible, weak clay that are predicted to settle 7 to 10 meters under the weight of the land reclamation fill and terminal loads. Prediction and acceleration of the settlement under the surcharge loads is thus vital for: land reclamation and ground improvement sequencing, the stability of the proposed containment dikes, and the construction-terminal development schedule. The project design required development of advanced analytical procedures to couple the geotechnical relationships between load, consolidation, settlement, strength gain, and stability.
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机译:弗吉尼亚州朴茨茅斯拟议的占地210公顷的Craney Island Eastward Expansion(及其后续开发为集装箱码头)是美国东部沿海地区有史以来最大规模的港口开发土地开垦计划。浅水区被大量可压缩的弱黏土沉积(厚度为25至40米),这些沉积物预计将在土地开垦填筑物和终端荷载的作用下沉降7至10米。因此,对超载情况下沉降的预测和加速对以下方面至关重要:土地开垦和地面改良的顺序,拟建的围堤的稳定性以及施工终点的开发进度。项目设计要求开发高级分析程序,以将载荷,固结,沉降,强度增加和稳定性之间的岩土关系联系起来。
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