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饱和半空间表面无限长梁的沉降变形

王鹏, 史吏, 张丙钦, 谷川

王鹏, 史吏, 张丙钦, 谷川. 饱和半空间表面无限长梁的沉降变形[J]. 岩土工程学报, 2017, 39(6): 1022-1029. DOI: 10.11779/CJGE201706007
引用本文: 王鹏, 史吏, 张丙钦, 谷川. 饱和半空间表面无限长梁的沉降变形[J]. 岩土工程学报, 2017, 39(6): 1022-1029. DOI: 10.11779/CJGE201706007
WANG Peng, SHI Li, ZHANG Bing-qin, GU Chuan. Bending consolidation of an infinite beam of finite width resting on a saturated poroelastic halfspace[J]. Chinese Journal of Geotechnical Engineering, 2017, 39(6): 1022-1029. DOI: 10.11779/CJGE201706007
Citation: WANG Peng, SHI Li, ZHANG Bing-qin, GU Chuan. Bending consolidation of an infinite beam of finite width resting on a saturated poroelastic halfspace[J]. Chinese Journal of Geotechnical Engineering, 2017, 39(6): 1022-1029. DOI: 10.11779/CJGE201706007

饱和半空间表面无限长梁的沉降变形  English Version

基金项目: 国家自然科学基金项目(51208383); 浙江省自然科学基金项目(LQ12E08008); 浙江省重点科技创新团队项目(2011R50020)
详细信息
    作者简介:

    王 鹏(1984- ),男,博士,副教授,主要从事土动力学及地基处理方面的研究。E-mail: geowangpeng@163.com。

  • 中图分类号: TU435

Bending consolidation of an infinite beam of finite width resting on a saturated poroelastic halfspace

  • 摘要: 采用解析方法研究了饱和半空间表面无限长欧拉梁的沉降变形特性。假定梁与地基的竖向接触应力沿梁截面均匀分布、梁的挠度与梁截面下地基表面的位移均值相等,分别考虑地基表面完全透水及完全不透水情况,基于Fourier及Laplace联合变换获得了问题的解析解,并通过已有研究结果及ABAQUSTM有限元分析模型对比验证了解的正确性。分析结果表明,梁的弯曲刚度、地基的排水及不排水泊松比以及地基表面的透水条件对梁的沉降变形有明显影响。
    Abstract: The time-dependent flexural behavior of an infinite beam of finite width resting on the surface of a saturated poroelastic halfspace is examined. The vertical contact stress is assumed to be uniformly distributed across the beam section. The displacement continuity is achieved by equaling the beam deflection to the average displacement of the halfspace surface under the beam width. The drainage condition at the surface of the poroelastic halfspace is considered as either completely drained or completely undrained. The problem is analytically solved using the Fourier and Laplace transformations. The developed solutions are verified via comparisons with the existing analytical solutions and computational results by finite element code ABAQUSTM. The numerical results indicate that the beam bending rigidity, the drained and undrained Poisson’s ratios and the drainage boundary conditions at the halfspace surface have important influences on the flexural responses of the beam.
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  • 收稿日期:  2016-01-07
  • 发布日期:  2017-06-24

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