Soil Plugging Effect on Drivability Prediction of Offshore Platform Piles
Soil Plugging Effect on Drivability Prediction of Offshore Platform Piles
摘要
Field measurements of driving resistances and heights of soil core during driving were made offshore and onshore of steel pipe piles. Measured data show that the height of soil core varies differently for piles of different diameters with the increase of penetration. Dynamic plugging could be assumed never to occur for steel pipe piles with diameters over 900 mm. Soil resistances at the time of continuous driving (SRD) are back analyzed from blow counts with an empirical distribution of resistances suppported by many early dynamic measurements. A method of predicting SRD is finally suggested.
Field measurements of driving resistances and heights of soil core during driving were made offshore and onshore of steel pipe piles. Measured data show that the height of soil core varies differently for piles of different diameters with the increase of penetration. Dynamic plugging could be assumed never to occur for steel pipe piles with diameters over 900 mm. Soil resistances at the time of continuous driving (SRD) are back analyzed from blow counts with an empirical distribution of resistances suppported by many early dynamic measurements. A method of predicting SRD is finally suggested.
作者
Zhu Guangyu, Lu Tongsheng, Tang Nianci and Zai Jinzhang 1. Senior Engineer, Research Institute of the Third Navigation Engineering Bureau, Ministry of Communications,Shanghai2. Lecturer, Dept. of Communications and Transportation Engineering, Southeast University, Nanjing3. Professor, Dept. of Communications and Transportation Engineering, Southeast University, Nanjing4. Associate Professor, Institute of Geotechnical Engineering, Tongji University, Shanghai
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