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摘要：
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在浅覆盖层花岗岩地区进行钢管桩施工,存在易偏位、桩尖易卷口和进度慢等技术难题。文章依托三峡坝河口重件码头和杨家湾集装箱杂货码头钢管桩基础工程,探讨了以上问题。结果认为,采用钻打结合技术沉桩,可增加桩的嵌岩深度,成桩质量也可得到保障。
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When installing steel tubular piles in regions where granite is shallowly overburdened, the piles are easy to deviate and the pile tip is easy to warp, resulting in slow driving. These problems are discussed in the light of the construction of the steel tubular pile foundations for Bahekou Heavy Cargo Wharf in the Three Gorges and Yangjiawan Container & General Cargo Wharf. It is deemed after the discussion that installation of steel tubular piles with a technology combining boreholing with driving can not only increase the embedded depth of the piles but also ensure the quality of the piles installed.
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