桩侧摩阻力对打入桩定向稳定性的影响

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Effect of Skin Friction on the Directional Stability of Driven Piles during Driving

摘要: 在本文中,把打桩时桩顶的锤击力作为一种周期荷载而导得Mathieu方程.从该方程的稳定界限,我们可求得桩的临界长度,也讨论了桩侧摩阻力对定向稳定性的影响.
- 桩 /
- 桩侧摩阻力 /
- 定向稳定性 /
- Mathieu方程 /
- 临界长度
Abstract: In this paper,the driving forces at a pile top are considered as a periodic load during driving and the Mathieu equation is derived.From the stability charts of this equation,we can obtain the critical length of the pile,and the effect of skin friction upon the critical length is discussed.
- pile /
- skin friction /
- directional stability /
- Mathieu equation /
- critical length

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[3]	Omar,R.M.,Discussion: The stability of slender piles during driving(Burgess,I.W.),Geotechnique,28(1978),234-239.
[4]	Omar,R.M.and T.J.Poskitt,Directional stability of piles during driving,Numerical Methods in Offshore Piling,ICE.London(1980),19-28.
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[6]	Nayfeh,A.H.,Perturbation Methods,John Wiley & Sons,(1961).60-61.

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