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梁-桩-土竖向耦合振动特性分析

吕述晖 王奎华 张鹏

吕述晖, 王奎华, 张鹏. 梁-桩-土竖向耦合振动特性分析[J]. 力学学报, 2015, 47(1): 169-173. doi: 10.6052/0459-1879-14-082
引用本文: 吕述晖, 王奎华, 张鹏. 梁-桩-土竖向耦合振动特性分析[J]. 力学学报, 2015, 47(1): 169-173. doi: 10.6052/0459-1879-14-082
Lü Shuhui, Wang Kuihua, Zhang Peng. VERTICAL COUPLING VIBRATION OF BEAM-PILE-SOIL SYSTEM[J]. Chinese Journal of Theoretical and Applied Mechanics, 2015, 47(1): 169-173. doi: 10.6052/0459-1879-14-082
Citation: Lü Shuhui, Wang Kuihua, Zhang Peng. VERTICAL COUPLING VIBRATION OF BEAM-PILE-SOIL SYSTEM[J]. Chinese Journal of Theoretical and Applied Mechanics, 2015, 47(1): 169-173. doi: 10.6052/0459-1879-14-082

梁-桩-土竖向耦合振动特性分析

doi: 10.6052/0459-1879-14-082
基金项目: 国家自然科学基金资助项目 (51378464).
详细信息
    作者简介:

    王奎华,教授,主要研究方向:桩基工程学,土工测试技术.E-mail: zdwkh0618@zju.edu.cn

  • 中图分类号: TU473

VERTICAL COUPLING VIBRATION OF BEAM-PILE-SOIL SYSTEM

Funds: The project was supported by the National Natural Science Foundation of China (51378464).
  • 摘要: 针对桩与连续梁组合这一基础形式,研究了梁—桩—土竖向耦合振动特性. 首先,将桩假设为一维黏弹性杆件,采用平面应变模型模拟桩侧成层土对桩的动力作用. 同时,桩顶对梁的支撑简化为竖向点支撑. 然后,分别根据一维杆件纵向振动理论和Timoshenko梁理论给出桩和梁的竖向振动控制方程并求解,进而借助离散傅里叶逆变换获得在梁上瞬时激振下梁和土层以上桩段的时域响应半解析解. 通过与有限元模拟结果对比,验证了解的合理性. 在此基础上,讨论了梁几何参数和桩身缺陷对梁—桩—土竖向耦合振动特性的影响.

     

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出版历程
  • 收稿日期:  2014-09-22
  • 修回日期:  2014-11-05
  • 刊出日期:  2015-01-18

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