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A platform for research: civil engineering, architecture and urbanism
Horizontal-rocking vibration impedance determining method for part embedded type pile foundation
The invention discloses a horizontal-rocking vibration impedance determining method for a part embedded type pile foundation. The horizontal-rocking vibration impedance determining method includes thefollowing steps that pile body and pile periphery layered saturated soil is scattered along the z axis according to the horizontal layering condition of the pile periphery layered saturated soil, andthe saturated soil is scattered and weakened in the radial direction of the pile foundation in a ring shape according to the weakening condition of each layer of pile periphery soil body; saturated soil fluctuation equations of all ring layers after scattering are established according to the Biot theory, a matrix of displacement fields and stress fields of the saturated soil of all the ring layers is solved, then unit horizontal dynamical reaction on the pile and soil contact face is calculated, a pre-established free transverse vibration equation of a non-embedded section pile body and a pre-established forced transverse vibration equation of an embedded section pile body under the saturated soil horizontal dynamical reaction effect are solved, force, deformation continuity conditions and pile bottom boundary conditions of all pile sections are obtained, and horizontal-rocking vibration impedance of the part embedded type pile foundation is calculated. By means of the method, the calculation precision of the horizontal-rocking impedance of the part embedded type pile foundation in the pile foundation project can be improved.
本发明公开了一种部分埋入式桩基的水平‑摇摆振动阻抗确定方法，包括如下步骤：根据桩周层状饱和土的水平分层情况，沿z轴离散桩身及桩周层状饱和土，根据每一层桩周土体的弱化情况，沿桩基径向圈状离散弱化域饱和土；根据Biot理论建立离散后各圈层饱和土波动方程并求解得到各圈层饱和土的位移场和应力场的矩阵，再计算桩土接触面上的单位水平动反力，求解预先建立的非埋置段桩身的自由横向振动方程以及埋置段桩身在饱和土水平动反力作用下的受迫横向振动方程，得到各桩段力、变形连续条件和桩底边界条件，计算出部分埋入式桩基的水平‑摇摆振动阻抗。本方法能够提高桩基工程中部分埋入式桩基水平‑摇摆阻抗的计算精度。
Horizontal-rocking vibration impedance determining method for part embedded type pile foundation
The invention discloses a horizontal-rocking vibration impedance determining method for a part embedded type pile foundation. The horizontal-rocking vibration impedance determining method includes thefollowing steps that pile body and pile periphery layered saturated soil is scattered along the z axis according to the horizontal layering condition of the pile periphery layered saturated soil, andthe saturated soil is scattered and weakened in the radial direction of the pile foundation in a ring shape according to the weakening condition of each layer of pile periphery soil body; saturated soil fluctuation equations of all ring layers after scattering are established according to the Biot theory, a matrix of displacement fields and stress fields of the saturated soil of all the ring layers is solved, then unit horizontal dynamical reaction on the pile and soil contact face is calculated, a pre-established free transverse vibration equation of a non-embedded section pile body and a pre-established forced transverse vibration equation of an embedded section pile body under the saturated soil horizontal dynamical reaction effect are solved, force, deformation continuity conditions and pile bottom boundary conditions of all pile sections are obtained, and horizontal-rocking vibration impedance of the part embedded type pile foundation is calculated. By means of the method, the calculation precision of the horizontal-rocking impedance of the part embedded type pile foundation in the pile foundation project can be improved.
本发明公开了一种部分埋入式桩基的水平‑摇摆振动阻抗确定方法，包括如下步骤：根据桩周层状饱和土的水平分层情况，沿z轴离散桩身及桩周层状饱和土，根据每一层桩周土体的弱化情况，沿桩基径向圈状离散弱化域饱和土；根据Biot理论建立离散后各圈层饱和土波动方程并求解得到各圈层饱和土的位移场和应力场的矩阵，再计算桩土接触面上的单位水平动反力，求解预先建立的非埋置段桩身的自由横向振动方程以及埋置段桩身在饱和土水平动反力作用下的受迫横向振动方程，得到各桩段力、变形连续条件和桩底边界条件，计算出部分埋入式桩基的水平‑摇摆振动阻抗。本方法能够提高桩基工程中部分埋入式桩基水平‑摇摆阻抗的计算精度。
Horizontal-rocking vibration impedance determining method for part embedded type pile foundation
一种部分埋入式桩基的水平-摇摆振动阻抗确定方法
WANG JUE (author) / HAN YIMING (author) / ZHANG YUQUAN (author) / YE HUIRAN (author)
2020-11-20
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
Effects of Flexibility on Rocking Impedance of Deeply Embedded Foundation
| Online Contents | 2004
Effects of Flexibility on Rocking Impedance of Deeply Embedded Foundation
| British Library Online Contents | 2004
Nonlinear Sway-Rocking Stiffness of Pile Foundation
| TIBKAT | 2021
Nonlinear Sway–Rocking Stiffness of Pile Foundation
| Springer Verlag | 2021