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| 考虑土体轴对称波动时变模量桩的纵向振动特性 | |
| 引用本文： | 阙仁波,王奎华,祝春林.考虑土体轴对称波动时变模量桩的纵向振动特性[J].振动工程学报,2010,23(1). |
| 作者姓名： | 阙仁波 王奎华 祝春林 |
| 作者单位： | 1. 浙江大学软弱土与环境土工教育部重点实验室,浙江,杭州,310027;浙江大学岩土工程研究所,浙江,杭州,310027 2. 浙江大学岩土工程研究所,浙江,杭州,310027 3. 宁波市北仑区水利局,浙江,宁波,315800 |
| 基金项目： | 国家自然科学基金资助项目 |
| 摘 要： | 考虑土体轴对称波动效应,对变模量桩在任意激振力作用下的纵向振动特性进行了研究。假定桩为竖直、弹性、变模量体,土为线性粘弹性体。利用拉普拉斯变换,将定解问题转换到拉普拉斯域内求解,通过引入势函数并结合阻抗函数的传递性,得到了拉普拉斯域内的桩顶阻抗函数解析解,进而可得到频域内的桩顶阻抗函数和速度导纳的解析解,利用卷积定理和傅里叶逆变换,求得了半正弦脉冲激振力作用下桩顶速度时域响应半解析解。基于所得解讨论了桩身模量变化对桩顶速度导纳曲线和反射波曲线的影响,得到了许多重要结论。 |
| 关 键 词： | 变模量桩 轴对称波动效应 半正弦脉冲激振力 速度导纳曲线 反射波曲线 |
Longitudinal vibration of pile with variable modulus considering axisymmetric wave effect of soil |
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| QUE Ren-bo,WANG Kui-hua,ZHU Chun-lin.Longitudinal vibration of pile with variable modulus considering axisymmetric wave effect of soil[J].Journal of Vibration Engineering,2010,23(1). | |
| Authors: | QUE Ren-bo WANG Kui-hua ZHU Chun-lin |
| Affiliation: | QUE Ren-bo1,2,WANG Kui-hua2,ZHU Chun-lin3(1.Key Laboratory of Soft Soils , Geoenvironmental Engineering,Ministry of Education,Zhejiang University,Hangzhou 315100,China,2.Institute of Geotechnical Engineering,Hangzhou 310027,3.Ningbo Municipal Water Conservancy Bureau,Ningbo 315800,China) |
| Abstract: | Taking axisymmetric wave effect of soil into account,longitudinal vibration of pile with variable modulus undergoing vertical arbitrary load is theoretically investigated.The pile is assumed to be vertical,elastic and of variable modulus,and the soil is regarded as a linear visco-elastic layer with viscous damping.With Laplace transforms,the question can be solved in Laplace domain.With the aid of two potentials in conjunction with impedance transmit functions,an analytical solution for the impedance functi... |
| Keywords: | pile with variable modulus axisymmetric wave effect semi-sine exciting force mobility curves reflection wave curves |
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