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J4  2010, Vol. 44 Issue (10): 2021-2028    DOI: 10.3785/j.issn.1008-973X.2010.10.030
岩土工程、土木及建筑工程     
非均质土中基于虚土桩法的桩基纵向振动
杨冬英1,2, 王奎华1
1.浙江大学 岩土工程研究所 软弱土与环境土工教育部重点实验室,浙江 杭州310027;2.苏州科技学院 土木工程学院,江苏 苏州 215011
Vertical vibration of pile based on fictitious soilpile model in inhomogeneous soil
YANG Dong ying1,2, WANG Kui hua1
1. MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, Institute of Geotechnical Engineering, Zhejiang University, Hangzhou 310027, China; 2. School of Civil Engineering, Suzhou University of Science and Technology, Suzhou 215011, China
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摘要:

在考虑桩底有限土层影响的情况下,研究非均质土中桩在纵向振动荷载作用下的动力特性.在将桩截面积范围内有限层桩底土模拟为虚土桩的基础上,建立虚土桩土、桩土耦合振动模型,采用复刚度传递多圈层平面应变模型建立桩、虚土桩与桩侧土的纵向振动动力方程,利用桩土、虚土桩土以及虚土桩桩的耦合接触条件求解动力方程,得到桩顶频域响应解析解和时域响应半解析解.通过对虚土桩参数的研究检验桩底土对桩动力响应的影响,得到一系列桩顶速度导纳曲线、时域反射波曲线以及复刚度曲线表现规律图.

Abstract:

The dynamic response of pile in inhomogeneous soil was analyzed under vertical dynamic loads by considering the influence of finite soil layers under pile. The dynamic interaction model was conducted based on the finite soil layers of which the crosssection area is equal to the pile were modelled as fictitious soilpile. The dynamic equations of fictitious soilpile, pile and soil were built by complex stiffness transfer model of radial multizone plane strain and solved by using the continuity condition of fictitious soilpile, pile and soil. Then the analytical dynamic response solution in frequency domain and the semianalytical dynamic response solution in time domain at the top of pile were obtained. Parametric studies of fictitious soilpile were performed to examine the effect on the dynamic responses of pile. The curves of the velocity admittance, reflected wave and complex stiffness at the top of pile were obtained.

出版日期: 2010-10-01
:  TU 473  
基金资助:

国家自然科学基金资助项目(50879077);苏州科技学院基金资助项目.

通讯作者: 王奎华,男,教授.     E-mail: zdwkh0618@zju.edu.cn
作者简介: 杨冬英(1980—),女,江苏苏州人,讲师,从事桩基动力学理论及土动力学理论等研究.E-mail: iiydong@126.com
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引用本文:

杨冬英, 王奎华. 非均质土中基于虚土桩法的桩基纵向振动[J]. J4, 2010, 44(10): 2021-2028.

YANG Dong ying, WANG Kui hua. Vertical vibration of pile based on fictitious soilpile model in inhomogeneous soil. J4, 2010, 44(10): 2021-2028.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2010.10.030        http://www.zjujournals.com/eng/CN/Y2010/V44/I10/2021

[1] NOVAK M, BEREDUGO Y O. Vertical vibration of embedded footings [J]. Journal of Soil Mechanics and Foundation Division, 1972, 98(12): 1291-1310.

[2] MATLOCK H, FOO S H, BRYANT L L. Simulation of lateral pile behavior [C]∥ Proceeding of Earthquake Engineering and Soil Dynamics. Pasadena: ASCE, 1978: 600-619.

[3] NOGAMI T, KONAGAI K. Time domain axial response of dynamically loaded single piles [J]. Journal of Engineering Mechanics, 1986, 112(11): 1241-1252.

[4] NOGAMI T, KONAGAI K. Dynamic response of vertically loaded nonlinear pile foundations [J]. Journal of Geotechnical Engineering, 1987, 113(2):147-160.

[5] NOGAMI T,KONAGAI K. Time domain flexural response of dynamically loaded single piles [J]. Journal Engineering Mechanics, 1988, 114(9): 1512-1525.

[6] 王奎华,谢康和,曾国熙.有限长桩受迫振动问题解析解及其应用[J].岩土工程学报,1997,19(6): 27-35.

WANG Kuihua, XIE Kanghe, ZENG Guoxi. Analytical solution to vibration of finite length pile under exciting force and its application [J]. Chinese Journal of Geotechnical Engineering, 1997, 19(6): 27-35.

[7] 王奎华,谢康和,曾国熙. 变截面阻抗桩受迫振动问题解析解及应用[J]. 土木工程学报, 1998, 31(6): 56-67.

 WANG Kuihua, XIE Kanghe, ZENG Guoxi. An analytical solution to forced vibration of foundation pile with variable section impedance and its application [J]. China Civil Engineering Journal, 1998, 31(6): 56-67.

[8] 王奎华.变截面阻抗桩纵向振动问题积分变换解[J]. 力学学报,2001,33(4): 479-491.

WANG Kuihua. A study on vertical vibration of pile with inhomogeneous cross section acoustic impedance with Laplace transform [J]. Acta Mechanica Sinica, 2001, 33(4): 479-491.

[9] 王腾,王奎华,谢康和.成层土中桩的纵向振动理论研究及应用[J].土木工程学报,2002,35(1): 83-87.

WANG Teng, WANG Kuihua, XIE Kanghe. Study on vibration properties of piles in layered soil [J]. China Civil Engineering Journal, 2002, 35(1): 83-87.

[10] NOVAK M. Dynamic stiffness and damping of piles [J]. Canadian Geotechnical Journal, 1974, 11(4): 574-598.

[11] NOVAK M,ABOULELLA F. Impedance functions of piles in layered media [J]. Journal of the Engineering Mechanical Division, 1978, 104(EM3): 643-661.

[12] NOVAK M, NOGAMI T, ABOULELLA F. Dynamic soil reaction for plane strain case [J]. Journal of the Engineering Mechanical Division, 1978, 104(4): 953-959.

[13] HAN Y C. Dynamic vertical response of piles in nonlinear soil [J]. Journal of Geotechnical and Geoenvironmental Engineering, 1997, 123(8): 710-716.

[14] EL NAGGAR M H, NOVAK M. Nonlinear axial interaction in pile dynamics [J]. Journal of Geotechnical Engineering, 1994, 120(4): 678-695.

[15] EL NAGGAR M H. Vertical and torsional soil reactions for radially inhomogeneous soil layer [J]. Structural Engineering and Mechanics, 2000, 10(4): 299-312.

[16] NOGAMI T,HARN S C. Dynamic soil stiffnesses at side of embedded structures with rectangular base [J]. Journal of Engineering Mechanics, 2003, 129(8): 963-973.

[17] 王奎华,杨冬英,张智卿.基于复刚度传递多圈层平面应变模型的桩动力响应研究[J].岩石力学与工程学报,2008,27(4): 825-831.

WANG Kuihua,YANG Dongying,ZHANG Zhiqing. Study on dynamic response of pile based on complex stiffness transfer model of radial multizone plane strain [J]. Chinese Journal of Rock Mechanics and Engineering, 2008, 27(4): 825-831.

[18] 胡昌斌,王奎华,谢康和.基于平面应变假定基桩适用性理论研究[J].岩土工程学报,2003, 25(5): 595-601.

HU Changbin, WANG Kuihua, XIE Kanghe. Study on theories of axial response of dynamically loaded single piles based on plane strain assumption [J]. Chinese Journal of Geotechnical Engineering, 2003, 25(5): 595-601.

[19] 周铁桥,王奎华,谢康和,等.轴对称径向非均质土中桩的纵向振动特性分析[J].岩土工程学报,2005,27(6): 720-725.

ZHOU Tieqiao, WANG Kuihua, XIE Kanghe, et al. Vertical vibration analysis of piles in radial heterogeneous soil [J]. Chinese Journal of Geotechnical Engineering, 2005,27(6): 720-725.

[20] 王奎华,阙仁波,夏建中.考虑土体真三维波动效应时桩的振动理论及对近似理论的校核[J].岩石力学与工程学报, 2005, 24(8): 1362-1370.

WANG Kuihua,QUE Renbo,XIA Jianzhong. Theory of pile vibration considering true threedimensional wave effect of soil and its check on the approximate theories [J]. Chinese Journal of Rock Mechanics and Engineering,2005,24(8): 1362-1370.

[21] 李强,王奎华,谢康和.饱和土中端承桩纵向振动特性研究[J].力学学报,2004,36(4): 435-442.

LI Qiang,WANG Kuihua,XIE Kanghe. Vertical vibration of an end bearing pile embedded in saturated soil [J]. Acta Mechanica Sinica,2004,36(4): 435-442.

[22] 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.

[23] 胡昌斌.考虑土竖向波动效应的桩土纵向耦合振动理论[D]. 杭州:浙江大学,2003.

HU Changbin. Study on soilpile interaction in longitudinal vibration considering vertical wave effect of soil [D]. Hangzhou: Zhejiang University, 2003.

[24] 彭吉五.考虑基岩埋置深度影响时单桩沉降特性研究[D]. 杭州:浙江大学,2007.

PENG Jiwu. Research on the settlement of single pile considering the effect of embedded depth for bedrock [D]. Hangzhou: Zhejiang University, 2007.

[25] 陈嘉熙.虚土桩法可行性初步研究与分析[D]. 杭州:浙江大学,2008.

CHEN Jiaxi. Preliminary feasibility studies and analysis on method of virtual pile of soil [D]. Hangzhou: Zhejiang University, 2008.

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