基于波动方程的液压锤打桩参数标定研究OA
Parameter calibration of hydraulic hammer pile driving based on wave equation
桩基贯入过程的准确预测对于海上风电及大型桩基工程具有重要意义.故基于一维波动方程和有限差分法,结合桩、锤及桩周土体动力特性,建立了打桩数值分析模型,并对液压锤的质量与刚度进行了标定.通过数值模拟分析南海某风电场现场打桩数据,研究了锤击数随贯入深度的发展规律,并与实测结果进行对比.结果表明:程序能够稳定反映桩基贯入过程的动力响应,模拟结果与现场数据整体吻合.基于打桩数值分析模型的快速计算与参数标定方法,为桩锤性能评估、施工参数优化及工程应用提供了可靠技术支撑.
Accurate prediction of the pile penetration process is of great significance for offshore wind power and large-scale pile foundation engineering.Therefore,based on the one-dimensional wave equation and the finite difference method,a numerical analysis model for pile driving is established by integrating the dynamic characteristics of the pile,hammer,and surrounding soil,and the mass and stiffness of the hydraulic hammer are calibrated accordingly.By simulating the pile driving process from an offshore wind farm in the South China Sea,the development pattern of blow counts with penetration depth is investigated and compared with field measurements.The results indicate that the program can stably capture the dynamic response during the pile penetration process,and the simulation results are in good agreement with the field data.The rapid computation and parameter calibration method based on the numerical pile driving analysis model provides reliable technical support for hammer performance evaluation,construction parameter optimization,and engineering applications.
俞剑;何冠邦;李业勋;王衔
同济大学地下建筑与工程系,上海 200092||同济大学岩土及地下工程教育部重点实验室,上海 200092同济大学地下建筑与工程系,上海 200092||同济大学岩土及地下工程教育部重点实验室,上海 200092中交第三航务工程局有限公司,上海 200032中交第三航务工程局有限公司,上海 200032
建筑与水利
波动方程打桩数值分析液压锤标定工程应用
wave equationnumerical analysis of pile drivingcalibration of hydraulic hammerengineering application
《岩土工程学报》 2026 (z2)
33-37,5
国家重点研发计划项目(2024YFB2605500)国家自然科学基金项目(51908420)
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