Improving the design of piles driven in chalk through the ALPACA research project
Improving the design of piles driven in chalk through the ALPACA research project
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通过羊驼研究项目改进粉笔打桩的设计
DOI:
10.1051/geotech/2019008
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发表时间:
2019
期刊:
影响因子:
--
通讯作者:
Jardine R
中科院分区:
文献类型:
--
作者:
Jardine R
Chalk is present under large areas of NW Europe as a low-density, porous, weak carbonate rock. Large numbers of offshore wind turbines, bridges and port facilities rely on piles driven in chalk. Current European practice assumes ultimate shaft resistances that appear low in comparison with the Chalk’s unconfined compression strength and CPT cone resistance ranges and can impact very significantly on project economics. Little guidance is available on pile driveability, set-up or lateral resistance in chalk, or on how piles driven in chalk can sustain axial or lateral cyclic loading. This paper describes the ALPACA (Axial-Lateral Pile Analysis for Chalk Applying multi-scale field and laboratory testing) project funded by EPSRC and Industry that is developing new design guidance through comprehensive field testing at a well-characterised low-to-medium density test site, supported by analysis of other tests. Field experiments on 36 driven piles, sixteen of which employ high resolution fibre-optic strain gauges, is supported by advanced laboratory andin situtesting, as well as theoretical analysis. The field work commenced in October 2017 and was largely complete in May 2019.
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1976
期刊:
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作者:
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