岩土工程学报2024，Vol.46Issue(z2)：166-170,5.DOI:10.11779/CJGE2024S20030
瑞利波作用下考虑竖向荷载影响的单桩在饱和软土中的水平动力分析
Horizontal dynamic analysis of a single pile in saturated soft soils under Rayleigh wave action consideringe effects of vertical loads
摘要
Abstract
The pile generates horizontal vibration under the combined action of vertical loads and Rayleigh waves,and the vertical loads will increase the horizontal displacement due to the second-order effects.In order to study the horizontal dynamic response of piles in saturated soft soil foundation,a model for calculating the dynamic response of a single pile under the action of Rayleigh waves is established.Based on the Biot theory,the horizontal dynamic response of saturated soft soil foundation in a uniform free field is calculated.The boundary conditions are used to obtain the closure solution of soil resistance.Based on the Timoshenko beam theory,the dynamic differential equation for the pile foundation is established,and the analytical solutions of the horizontal displacement,bending moment and rotation angle of the pile are obtained.Numerical examples are used to verify the correctness of the model,and the influences of the vertical load and dimensionless frequency on the horizontal vibration of the pile are analyzed.It is found that the vertical load and pile length have a great influence on the horizontal vibration.关键词
饱和软土/柔性约束/水平振动/瑞利波/Timoshenko梁Key words
saturated soft soil/flexible constraint/horizontal vibration/Rayleigh wave/Timoshenko beam分类
建筑与水利引用本文复制引用
周凤玺,高智岗,曹小林,戴国亮..瑞利波作用下考虑竖向荷载影响的单桩在饱和软土中的水平动力分析[J].岩土工程学报,2024,46(z2):166-170,5.基金项目
国家自然科学基金项目(12362032,1878160,52078128) （12362032,1878160,52078128）
甘肃省重点研发计划项目(23YFFA0063) （23YFFA0063）
