Study on Artificial Island Ground Improvement Method and Effect

Abstract:

The artificial island ground on an open sea is covered by thick soft soil. It must be improved before using. In accordance with a designing scheme, the ground treatment method is inserting drain boards on land and jointed dewatering surcharge preloading, the residual settlement is not more than 30cm after improvement and the average consolidation degree is more than 85%. In order to estimate ground improvement effect and construction safety, instruments are buried to monitor the whole ground improving processes. By monitoring settlement and pore water pressure, it is shown that the total ground settlement in construction is 2234mm, its final settlement is 2464mm, and consolidation degree and residual settlement respectively satisfy requirements. In ground improvement, horizontal displacement is small and construction is safe. Meanwhile, the results of soil properties and vane shear strength detection tests show the soft soil ground is greatly reduced in water content and porosity ratio, and improved in strength. It is named that the ground improvement method is reasonable and reaches expected effect.

• Periodical: Advanced Materials Research (Volumes 1030-1032)
• Pages: 1037-1040
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1030-1032.1037
• Online since: September 2014
• Authors: Jin Fang Hou*, Ju Chen, Jian Yu
• Keywords: Dewatering Preloading, Horizontal Displacement, Porosity Ratio, Settlement, Soft Soil Ground Improvement

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