Abstract：Based on Biot’s dynamic wave equation for porous-saturated soil, the response of an end bearing pipe pile embedded in homogeneously isotropic saturated soil and subjected to a transient torsional loading is theoretically investigated. At first, the vibration displacement solution of the saturated soil is solved. By utilizing the continuity and boundary conditions of the pile-soil system, the dynamic response of the twist angle of the pipe pile is obtained in a closed form. Finally, the influence of major parameters on the complex stiffness of pile top and the twist angle of the pipe pile is investigated. It is shown that, in the low-frequency stage which focused by dynamic foundation design, the modulus ratio of soil around pile and inner soil, the thickness and the slenderness of pipe pile have a distinct influence on the dynamic response of pile. But the influence of the coupled coefficient of fluid and solid phase can be neglected.
靳建明1,张智卿1，吴章土1，李西斌2. 饱和土中管桩的扭转振动特性研究[J]. 振动与冲击, 2015, 34(11): 52-57.
Jin Jian-ming1，ZHANG Zhi-qing1,WU Zhang-tu1,LI Xi-bin2. Dynamic torsional response of a pipe pile embedded in a porous-saturated soil. JOURNAL OF VIBRATION AND SHOCK, 2015, 34(11): 52-57.
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