| 粘弹性地基中管桩的纵向振动特性研究 |
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| 引用本文： | 丁选明,陈磊.粘弹性地基中管桩的纵向振动特性研究[J].长江科学院院报,2009,26(3):32-35. |
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| 作者姓名： | 丁选明 陈磊 |
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| 作者单位： | 1. 长江科学院,水利部岩土力学与工程重点实验室,武汉,430010;河海大学,岩土工程科学研究所,南京,210098
2. 河海大学,岩土工程科学研究所,南京,210098 |
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| 摘 要： | 基于经典的平面应变假定，推导出了管桩动力响应的频域解析表达式。分析了土体剪切模量、阻尼系数、桩芯土、桩径等对振动特性的影响。计算结果表明：土体剪切模量越大，速度导纳曲线和复动刚度曲线振荡幅值越小；土体阻尼系数越大，速度导纳曲线振荡幅值越小；桩周土对桩壁的摩阻力要比桩芯土大；桩径越小，桩芯土对桩的作用力越小。
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| 关 键 词： | 管桩 粘弹性地基 动刚度 速度导纳 动力响应 |
Study on Vertical Vibration Characteristics of Pipe Piles in Viscoelastic Soil |
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| DING Xuan-ming,CHEN Lei.Study on Vertical Vibration Characteristics of Pipe Piles in Viscoelastic Soil[J].Journal of Yangtze River Scientific Research Institute,2009,26(3):32-35. |
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| Authors: | DING Xuan-ming CHEN Lei |
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| Affiliation: | 1.Key Laboratory of Geotechnical Mechanics and Engineering of the Ministry of Water Resources;Yangtze River Scientific Research Institute;Wuhan 430010;China;2.Geotechnical Research Institute;Hohai University;Nanjing 210098;China |
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| Abstract: | On the basis of classical plane strain case,the analytical solution on dynamic response of pipe pile in frequency domain was derived.The influences of soil shear modulus,damping coefficient,inner soil and diameter on vibration characteristics were studied.Numerical results indicated as follows: The oscillating amplitude of velocity admittance curve and dynamic complex stiffness curve is reduced with the increase of soil shear modulus and damping coefficient.The frictional resistance of outer soil is larger ... |
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| Keywords: | pipe pile viscoelastic soil dynamic stiffness velocity admittance dynamic response |
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