Study on Construction Technology of Rock-socketed Pile Group for Offshore Wind Turbine Generators
This paper simulates and analyzes the driveability of steel pipe pile under complex geological conditions by the GRLWEAP software,and studies the construction technology of integrated rock-socketed pile group based on the statistical analysis of the construction efficiency of different rock-socketed...
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| Main Author: | |
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| Format: | Article |
| Language: | zho |
| Published: |
Editorial Office of Pearl River
2020-01-01
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| Series: | Renmin Zhujiang |
| Subjects: | |
| Online Access: | http://www.renminzhujiang.cn/thesisDetails#10.3969/j.issn.1001-9235.2020.11.012 |
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| Summary: | This paper simulates and analyzes the driveability of steel pipe pile under complex geological conditions by the GRLWEAP software,and studies the construction technology of integrated rock-socketed pile group based on the statistical analysis of the construction efficiency of different rock-socketed equipment,such as percussion drill,rotary drill and auger drill.The results show that:When the bottom of the steel pipe pile in the granular strong weathered rock exceeds a certain depth,it is necessary to adopt the secondary pile sinking technology,which can effectively improve the efficiency of pile sinking.Under the engineering geological condition,the drilling efficiency of the rotary drill in the strong weathered rock layer is about 1.75~3.00 times that of the percussion drill,and the drilling efficiency in the weak weathered rock layer is relatively high.The drilling efficiency of auger drill increases obviously in most of the soil and rock layers such as sandy soil and strong weathered layers.The efficiency of the percussion drill in the covering layer is about 120% of that of the rotary drill.The successful construction of a high-power offshore test wind field shows that the optimized construction technology of rock-socketed piles has achieved good results in practical engineering applications. |
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| ISSN: | 1001-9235 |