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首页> 外文期刊>Ocean Engineering >Model tests on tilt adjustment techniques for a mooring dolphin platform with three suction caisson foundations in clay
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Model tests on tilt adjustment techniques for a mooring dolphin platform with three suction caisson foundations in clay

机译：带有三个抽吸沉箱基础的黏土海豚平台倾斜调节技术的模型试验

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摘要

A series of installation model tests have been performed in order to investigate the influence of the inclination angle on caisson installation penetration behavior during the suction-assisted penetration process and to explore the feasibility of the caisson tilt adjusting technique by applying suction/positive pressure and intermittent pumping among the caissons. The specially designed experimental model was a mooring dolphin platform with three suction caisson foundations. The test results indicate that the tilt angle could be adjusted to 0.5° by applying different suction pressures inside the caissons in soft clay during the suction-assisted penetration process, even with an initial tilt angle of up to 6.28°. Moreover, in stiff clay, it was still possible to adjust the tilt from 6.6° to 1.29°. Aside from applying the suction in the caissons, positive pressures were also applied to the caissons during the tilt adjustment at larger tilt angles. The reciprocating tilt adjustment process resulted in a larger soil heave, especially at larger tilt angles. This side effect would make the final insertion depth of the suction caisson less than the designed depth.
机译：为了研究倾角对吸力辅助穿透过程中沉箱安装穿透行为的影响，并通过施加吸力/正压力和间歇性来研究沉箱倾斜调整技术的可行性，进行了一系列安装模型测试。沉箱中抽水。特别设计的实验模型是带有三个沉箱基础的系泊海豚平台。测试结果表明，即使在初始倾斜角最大为6.28°的情况下，在抽吸辅助渗透过程中，通过在软粘土中的沉箱内部施加不同的抽吸压力，也可以将倾斜角调整为0.5°。此外，在硬质粘土中，仍然可以将倾斜度从6.6°调整到1.29°。除了在沉箱中施加吸力外，在倾斜调整期间以较大的倾斜角度还向沉箱施加了正压。往复的倾斜调节过程导致更大的土壤起伏，尤其是在更大的倾斜角度下。该副作用将使抽吸沉箱的最终插入深度小于设计深度。

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  • 来源
    《Ocean Engineering》 |2013年第15期|96-105|共10页
  • 作者

    Puyang Zhang; Hongyan Ding; Conghuan Le;

  • 作者单位

    State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300072, China,Key Laboratory of Coast Civil Structure Safety (Tianjin University), Ministry of Education, Tianjin 300072, China,School of Civil Engineering, Tianjin University, Tianjin 300072, China;

    State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300072, China;

    State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300072, China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Suction caisson; Adjusting tilt; Installation; Removal; Soil heave;

    机译：吸沉箱;调整倾斜度;安装;拆除;土he;

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