超载预压加固宁波机场场道软基 English Version
Strengthening of Soft Clay Ground of Ningbo Airport Runway by Surcharge Precompression
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摘要: 本文介绍采用袋装砂井超载预压方法加固宁波机场场道软基的研究及应用成果,并分析了砂井井阻及涂抹作用对土体固结速率的影响,得出了一些有价值的结论。Abstract: Ningbo Airport is built on the soft clay ground firstly in China. It has a runway 3,000m in length and 45m in width. The thickness of soft clay is greater than 32m. The calculated consolidation settlement is 0.48m, far beyond the allowable limit. The soft clay ground is improved by wick drain and surcharge pre-compression. The airport has been put in servirce since July, 1990. Process and result of in situ test, ground improvement and settlement obsevation are discribed. Influences of smear and well resistance of wick drain on consolidation rate are discussed.
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