Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for judging pile slipping in piling process based on energy conservation principle
The invention discloses a method for judging whether pile slipping occurs in a pile driving process based on an energy conservation principle, aiming at a pile slipping phenomenon frequently occurring on the sea, the invention firstly provides a reduction formula for calculation of soil resistance in a pile slipping dynamic process, and the reduction formula is used for fitting in combination with a plurality of actual cases on the basis of ICP-05 and UWA-13; then, the reduction method is used for calculating the soil resistance after hammering, the buoyancy is calculated at the same time, and an equilibrium equation of the pile movement process is established; the unit displacement is set, the change of the pile speed after the unit displacement is determined through energy conservation, if the speed is larger than 0, the unit displacement continues to be increased for cyclic calculation, and otherwise, it is indicated that the pile stops moving within the displacement range. According to the method, the number of required parameters is small, calculation is easy and convenient, the pile sliding condition can be judged before hammering, and the method has important significance in actual engineering.
本发明公开了一种基于能量守恒原理判断打桩过程中是否溜桩的方法，针对海上常出现的溜桩现象，本发明首先对溜桩动态过程中土阻力的计算提出了一个折减公式，其是在ICP‑05和UWA‑13的基础上结合多个实际案例进行拟合，得出了最合适的折减系数，然后再用该折减方法计算锤击后的土阻力，同时计算浮力，建立桩运动过程的平衡方程；设定单位位移大小，通过能量守恒确定单位位移后桩速度的变化，若速度大于0，则继续增加单位位移进行循环计算，反之，则说明桩在该位移范围内停止运动。该方法所需参数较少，计算起来较为简便，可以在锤击前判断溜桩的情况，在实际工程中具有较为重要的意义。
Method for judging pile slipping in piling process based on energy conservation principle
The invention discloses a method for judging whether pile slipping occurs in a pile driving process based on an energy conservation principle, aiming at a pile slipping phenomenon frequently occurring on the sea, the invention firstly provides a reduction formula for calculation of soil resistance in a pile slipping dynamic process, and the reduction formula is used for fitting in combination with a plurality of actual cases on the basis of ICP-05 and UWA-13; then, the reduction method is used for calculating the soil resistance after hammering, the buoyancy is calculated at the same time, and an equilibrium equation of the pile movement process is established; the unit displacement is set, the change of the pile speed after the unit displacement is determined through energy conservation, if the speed is larger than 0, the unit displacement continues to be increased for cyclic calculation, and otherwise, it is indicated that the pile stops moving within the displacement range. According to the method, the number of required parameters is small, calculation is easy and convenient, the pile sliding condition can be judged before hammering, and the method has important significance in actual engineering.
本发明公开了一种基于能量守恒原理判断打桩过程中是否溜桩的方法，针对海上常出现的溜桩现象，本发明首先对溜桩动态过程中土阻力的计算提出了一个折减公式，其是在ICP‑05和UWA‑13的基础上结合多个实际案例进行拟合，得出了最合适的折减系数，然后再用该折减方法计算锤击后的土阻力，同时计算浮力，建立桩运动过程的平衡方程；设定单位位移大小，通过能量守恒确定单位位移后桩速度的变化，若速度大于0，则继续增加单位位移进行循环计算，反之，则说明桩在该位移范围内停止运动。该方法所需参数较少，计算起来较为简便，可以在锤击前判断溜桩的情况，在实际工程中具有较为重要的意义。
Method for judging pile slipping in piling process based on energy conservation principle
一种基于能量守恒原理判断打桩过程中是否溜桩的方法
SHI RUILONG (Autor:in) / YANG YITAO (Autor:in) / YANG ZHONGXUAN (Autor:in) / HE BEN (Autor:in) / KUMANE (Autor:in)
08.10.2024
Patent
Elektronische Ressource
Chinesisch
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