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Method for determining bearing capacity of offshore wind power large-diameter steel pipe pile foundation based on drilling wave velocity
The invention provides a method for determining the bearing capacity of an offshore wind power large-diameter steel pipe pile foundation based on the drilling wave velocity, and the method comprises the steps: obtaining the parameters of each soil layer according to the obtained wave velocity in a drilling hole; the parameters of each soil layer at least comprise a cohesive soil liquid index average value, a silt void ratio average value, a silty-fine sand standard penetration number average value, a medium sand standard penetration number average value, a coarse sand standard penetration number average value and a gravelly sand dynamic probing number average value; according to the parameters of all the soil layers, the limit side resistance standard value of the pile body is obtained; the axial bearing capacity of the steel pipe pile is obtained by combining the outer perimeter of the section of the pile body, the unit area limit pile side frictional resistance standard value of each layer of soil of the pile body, the length of the pile body penetrating through each layer of soil, the bearing capacity reduction coefficient, the limit side resistance standard value of the pile body and the peripheral area of the pile body; the method is simple and convenient to operate, short in time consumption and rapid in data processing, and solves the problem of long period of geotechnical test and in-situ test.
本发明提供了一种基于钻孔波速确定海上风电大直径钢管桩基承载力的方法，根据获取的钻孔内的波速，得到各土层的参数，各土层的参数至少包括：粘性土液性指数平均值、粉土空隙比平均值、粉细砂标贯击数平均值、中砂标贯击数平均值、粗砂标贯击数平均值和砾砂动探击数平均值；根据各土层的参数，得到桩体的极限侧阻力标准值；结合桩体截面外周长、桩体各层土的单位面积极限桩侧摩阻力标准值、桩体穿过各层土的长度、承载力折减系数、桩体的极限侧阻力标准值和桩体外围面积，得到钢管桩轴向承载力；本发明操作简便、耗时短、数据处理迅速，解决了土工试验和原位测试周期长的问题。
Method for determining bearing capacity of offshore wind power large-diameter steel pipe pile foundation based on drilling wave velocity
The invention provides a method for determining the bearing capacity of an offshore wind power large-diameter steel pipe pile foundation based on the drilling wave velocity, and the method comprises the steps: obtaining the parameters of each soil layer according to the obtained wave velocity in a drilling hole; the parameters of each soil layer at least comprise a cohesive soil liquid index average value, a silt void ratio average value, a silty-fine sand standard penetration number average value, a medium sand standard penetration number average value, a coarse sand standard penetration number average value and a gravelly sand dynamic probing number average value; according to the parameters of all the soil layers, the limit side resistance standard value of the pile body is obtained; the axial bearing capacity of the steel pipe pile is obtained by combining the outer perimeter of the section of the pile body, the unit area limit pile side frictional resistance standard value of each layer of soil of the pile body, the length of the pile body penetrating through each layer of soil, the bearing capacity reduction coefficient, the limit side resistance standard value of the pile body and the peripheral area of the pile body; the method is simple and convenient to operate, short in time consumption and rapid in data processing, and solves the problem of long period of geotechnical test and in-situ test.
本发明提供了一种基于钻孔波速确定海上风电大直径钢管桩基承载力的方法，根据获取的钻孔内的波速，得到各土层的参数，各土层的参数至少包括：粘性土液性指数平均值、粉土空隙比平均值、粉细砂标贯击数平均值、中砂标贯击数平均值、粗砂标贯击数平均值和砾砂动探击数平均值；根据各土层的参数，得到桩体的极限侧阻力标准值；结合桩体截面外周长、桩体各层土的单位面积极限桩侧摩阻力标准值、桩体穿过各层土的长度、承载力折减系数、桩体的极限侧阻力标准值和桩体外围面积，得到钢管桩轴向承载力；本发明操作简便、耗时短、数据处理迅速，解决了土工试验和原位测试周期长的问题。
Method for determining bearing capacity of offshore wind power large-diameter steel pipe pile foundation based on drilling wave velocity
基于钻孔波速确定海上风电大直径钢管桩基承载力的方法
LIU MU (author) / WANG JIWEN (author) / JIANG JUNYI (author) / YANG QINGYI (author) / LI RENJIE (author) / FAN PEIJUN (author) / SUN XU (author) / JI CHENGLIANG (author) / BIAN LEI (author) / YU SHENGFEI (author)
2022-11-18
Patent
Electronic Resource
Chinese
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