摘要
通过采用桩底、桩侧壁复合式后注浆新工艺,在确保风机基础桩基承载力满足设计要求的情况下,最大程度优化减小钢管桩斜桩钻孔深度,制定技术先进、安全可靠的钢管桩嵌岩斜桩后注浆质量检测方法,解决超厚强风化岩层地质环境下海上风电基础钢管桩斜桩超长钻孔(嵌岩钻机钻头出钢管桩斜桩沉桩桩底标高后继续钻进成孔深度大于15 m,一般超过20 m)的技术难题,该项新技术具有重要的推广应用价值。
a composite post-grouting technology is applied to pile bottom and pile side wall in order to minimize the drilling depth of inclined steel pipe pile subject to the bearing capacity of wind turbine foundation pile meeting the design requirements.In addition,an advanced and reliable inspection method for post-grouting quality is established to solve the technical difficulty of ultra-deep borehole of inclined steel pipe piles as offshore wind power foundation under the condition of ultra-thick strongly weathered rock stratum.(Rock-embedded drill continues to penetrate by over 15 m at least,or over 20 m in general below the bottom elevation of inclined steel pipe pile.)The new technology is worth promoting and applying.
作者
郭新杰
Guo Xinjie(Xiamen Branch of CCCC Third Harbor Engineering Co.,Ltd.,Xiamen Fujian 361006,China)
出处
《港工技术》
2021年第3期85-90,共6页
Port Engineering Technology
关键词
海上风电
钢管桩
嵌岩斜桩
后注浆
offshore wind power
steel pipe pile
rock-embedded inclined pile
post-grouting
