• 全国中文核心期刊
  • 中国科技核心期刊
  • 美国工程索引(EI)收录期刊
  • Scopus数据库收录期刊
WANG Xing-hua, ZHANG Min. Dynamical response of vertically loaded pile in half-space of unsaturated porous media[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(7): 1210-1220.
Citation: WANG Xing-hua, ZHANG Min. Dynamical response of vertically loaded pile in half-space of unsaturated porous media[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(7): 1210-1220.

Dynamical response of vertically loaded pile in half-space of unsaturated porous media

More Information
  • Received Date: June 26, 2012
  • Published Date: July 16, 2013
  • By virtue of the 3D axisymmetric three-phase elastodynamic theory and considering the effect of matric suction on the dynamic shear modulus, the harmonic dynamic response of end-bearing piles embedded in unsaturated poroelastic medium subjected to vertical loading is investigated. The resistance factor and vibration modes of the soil layer are obtained from the direct decoupling of the governing equations by employing the differential operator splitting and variable separation method. On the basis of the assumptions of perfect contact along the pile-soil and the rigid supported type at the pile tip, the wave equation for the pile treated as a bar and described by the conventional 1-D structure vibration theory is then solved. Ultimately, the functions of complex stiffness at the top of the pile together with the soil impedances in the frequency domain are derived, and the selected numerical solutions are presented to portray the influences of principal parameters on the dynamic behaviors of pile. The results show that as the saturation decreases, the dynamic stiffness factor and the equivalent damping both decrease, while the resonance frequencies of the pile-soil system are almost not affected. It is necessary to differentiate the various responses evoked by the moduli of soil and pile during the analysis of pile-soil modulus ratio. The proposed model reveals an entire evolutional process of dynamic response of soil from single-phase media to two phase saturated media, and provides a comprehensive theoretical framework to describe the dynamic behavior of pile under actual soil environment.
  • [1]
    ZENG X,RAJAPAKSE R K N D. Dynamic axial load transfer from elastic bar to poroelastic medium[J]. Journal of Engineering Mechanics, 1999, 125(9): 1048-1055.
    MUKI R,STERNBERG E. Elastostatic load-transfer to a half-space from a partially embedded axially loaded rod[J]. International Journal of Solids and Structures, 1970, 6(1): 69-90.
    JIN B,ZHOU D,ZHONG Z. Lateral dynamic compliance of pile embedded in poroelastic half space[J]. Soil Dynamics and Earthquake Engineering, 2001, 21: 519-525.
    WANG J H,ZHOU X L,LU J F. Dynamic response of pile groups embedded in a poroelastic medium[J]. Soil Dynamics and Earthquake Engineering, 2003, 23(3): 235-242.
    ZHOU X L,WANG J H. Analysis of pile groups in a poroelastic medium subjected to horizontal vibration[J]. Computers and Geotechnics, 2009, 36(3): 406-418.
    ZHOU X L,WANG J H,JIANG L F,et al. Transient dynamic response of pile to vertical load in saturated soil[J]. Mechanics Research Communications, 2009, 36: 618-624.
    XU B,LU J F,WANG J H. Dynamic responses of a pile embedded in a layered poroelastic half-space to harmonic lateral loads[J]. International Journal for Numerical and Analytical Methods in Geomechanics, 2010, 34: 493-515.
    NOVAK M,ABOUL-ELLA F,NOGAMI T. Dynamic soil reactions for plane strain case[J]. Journal of Engineering Mechanics, 1978, 104(4): 953-959.
    NOVAK M,ABOUL-ELLA F. Impedance functions of piles in layered media[J]. Journal of Engineering Mechanics, 1978, 104(6): 643-661.
    NOGAMI T,NOVAK M. Soil-pile interaction in vertical vibration[J]. Earthquake Engineering & Structural Dynamics, 1976, 4(3): 277-293.
    李 强. 考虑三维波动的饱和土中桩纵向耦合振动理论[D]. 杭州: 浙江大学, 2004.(LI Qiang. Study on pile longitudinal vibration in saturated soil considering three dimensional effect[D]. Hangzhou: Zhejiang University, 2004. (in Chinese))
    余 俊,尚守平,任 慧,等. 饱和土中桩竖向振动响应分析[J]. (工程力学), 2008, 25(10): 187-193.(YU Jun,SHANG Shou-ping,REN Hui,et al. Vertical dynamic response of pile in saturated soil[J]. Engineering Mechanics, 2008, 25(10): 187-193. (in Chinese))
    刘林超,杨 骁. 基于多孔介质理论的饱和土-桩纵向耦合振动研究[J]. (土木工程学报), 2009, 42(9): 89-95.(LIU Lin-chao,YANG Xiao. Study of vertical coupled vibrations of piles in saturated soils using porous medium theory[J]. China Civil Engineering Journal, 2009, 42(9): 89-95. (in Chinese))
    SANTOS J E,CORBERó J M,DOUGLAS J. Static and dynamic behavior of a porous solid saturated by a two-phase fluid[J]. CORBERó J M, DOUGLAS J. Static and dynamic behavior of a porous solid saturated by a two-phase fluid[J]. Journal of the Acoustical Society of America, 1990, 87(4): 1428-1438.
    SANTOS J E,DOUGLAS J,CORBERó J M,et al. A model for wave propagation in a porous medium saturated by a two-phase fluid[J]. CORBERó J M, et al. A model for wave propagation in a porous medium saturated by a two-phase fluid[J]. Journal of the Acoustical Society of America, 1990, 87(4): 1439-1448.
    SANTOS J E,RAVAZZOLI C L,GAUZELLINO R M,et al. Simulation of waves in poro-viscoelastic rocks saturated by immiscible fluids: numerical evidence of a second slow wave[J]. Journal of Computational Acoustics, 2004, 12(1): 1-21.
    ALLEN F A,RICHART F E,WOODS R D. Fluid wave propagation in saturated and nearly saturated sands[J]. Journal of Geotechnical Engineering, ASCE, 1980, 106(3): 235-254.
    张智卿,王奎华,谢康和,等. 成层非饱和土中桩的纵向振动特性分析[J]. (科技通报), 2007, 23(1): 88-96.(ZHANG Zhi-qing,WANG Kui-hua,XIE Kang-he,et al. A study on longitudinal vibration behavior of inhomogeneous pile embedded in layered unsaturated soils[J]. Bulletin of Science and Technology, 2007, 23(1): 88-96. (in Chinese))
    张智卿,王奎华,李 强,等.非饱和土中端承桩纵向振动问题简化解[J]. (工程力学), 2010, 27(5): 159-165.(ZHANG Zhi-qing,WANG Kui-hua,LI Qiang,et al. Simplified solution for vertical vibration of an end bearing pile embedded in unsaturated soil[J]. Engineering Mechanics, 2010, 27(5): 159-165. (in Chinese))
    VARDOULAKIS I,BESKOS D E. Dynamic behavior of nearly saturated porous media[J]. Mechanics of Materials, 1986, 5(1): 87-108.
    张智卿,王奎华,谢康和.非饱和土层中桩的扭转振动响应分析[J]. (岩土工程学报), 2006, 28(6): 729-734.(ZHANG Zhi-qing,WANG Kui-hua,XIE Kang-he. Torsional vibration of a pile embedded in unsaturated soil[J]. Chinese Journal of Geotechnical Engineering, 2006, 28(6): 729-734. (in Chinese))
    张智卿,王奎华,谢康和,等. 非饱和土中弹性支承桩的扭转振动响应分析[J]. (计算力学学报), 2008, 25(4): 552-556.(ZHANG Zhi-qing,WANG Kui-hua,XIE Kang-he,et al. Torsional vibration of a pile with elastic bottom boundaries embedded in unsaturated soil[J]. Chinese Journal of Computational Mechanics, 2008, 25(4): 552-556. (in Chinese))
    徐明江. 非饱和土地基与基础的动力响应研究[D]. (广州:华南理工大学), 2010.(XU Ming-jiang. Investigation on dynamic response of unsaturated soils and foundation[D]. Guangzhou: South China University of Technology, 2010. (in Chinese))
    VAN GENUCHTEN MT. A closed-form equation for predicting the hydraulic conductivity of unsaturated soils[J]. Soil Science Society of America Journal, 1980, 44(5): 892-898.
    MUALEM Y. A new model for predicting the hydraulic conductivity of unsaturated porous media[J]. Water Resources Research, 1976, 12(3): 513-522.
    BOLZON G,SCHREFLER B A,ZIENKIEWICZ O C. Elastoplastic soil constitutive laws generalized to partially saturated states[J]. Géotechnique, 1996, 46(2): 279-289.
    胡昌斌,王奎华,谢康和. 考虑桩土耦合作用时弹性支承桩纵向振动特性分析及应用[J]. (工程力学),2003, 20(2): 146-154.(HU Chang-bin,WANG Kui-hua,XIE Kang-he. Soil-pile interaction in vertical vibrations of a pile with elastic bottom boundaries and its applications[J]. Engineering Mechanics, 2003, 20(2): 146-154. (in Chinese))
  • Related Articles

    [1]CUI Chun-yi, ZHANG Shi-ping, YANG Gang, LI Xiao-fei. Vertical vibration of floating piles in saturated viscoelastic half-space considering wave effect of subsoil under pile bottom[J]. Chinese Journal of Geotechnical Engineering, 2015, 37(5): 878-892. DOI: 10.11779/CJGE201505014
    [2]HAN Hua-qiang, CHEN Sheng-shui, FU Hua, LING Hua. Effect of previous cyclic loading on deformation characteristics of dam materials[J]. Chinese Journal of Geotechnical Engineering, 2015, 37(2): 263-268. DOI: 10.11779/CJGE201502008
    [3]LI Chuan, FANG Da-yong, XIE Ying-en, ZHANG Ting, DU Xiu-zhong, SUN Chang-li. Analysis and monitoring of reconstruction project of vertical support for Fengsha Pumping Station engineering in soft soils[J]. Chinese Journal of Geotechnical Engineering, 2012, 34(suppl): 692-698.
    [4]Chai Jing, Wu Yongping, Hou Zhongjie, Su Puzheng. Experimental study on vertical stress of surrounding rock with equivalent material model[J]. Chinese Journal of Geotechnical Engineering, 2000, 22(2): 218-221.
    [5]Der Wen Chang, Hsien Heng Lee, Jin Fwu Ou Yang. Time-domain response of vertically loaded pile with soil models applied[J]. Chinese Journal of Geotechnical Engineering, 2000, 22(2): 162-169.
    [6]Zhang Ding. Analysis and computation of the deformation modulus of the pile in the composite foundation[J]. Chinese Journal of Geotechnical Engineering, 1999, 21(2): 70-73.
    [7]Zhang Zaiming. Analysis of Nonlinear Behavior of Equivalent Deformation Modulus[J]. Chinese Journal of Geotechnical Engineering, 1997, 19(5): 58-61.
    [8]Peng Xuanmao, Fu Zuoxin, Zhang Ziming. Analysis of Vertical Anchor Bar in the Rock Foundation[J]. Chinese Journal of Geotechnical Engineering, 1991, 13(5): 54-63.
    [9]Huang Chuanzhi. A Solution to Terzaghi’s Multidimensional Consolidation Differential Equation[J]. Chinese Journal of Geotechnical Engineering, 1991, 13(1): 34-47.

Catalog

    Article views (341) PDF downloads (291) Cited by()
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return