Please wait a minute...
浙江大学学报(工学版)
浙江大学学报(工学版)
土木工程     
静钻根植竹节桩纵向振动特性及应用研究
王奎华,李振亚,吕述晖,张鹏,庾焱秋
浙江大学 滨海和城市岩土工程研究中心,浙江 杭州 310058
Vertical vibration characteristics of static drill rooted nodular pile and its applications
WANG Kui-hua, LI Zhen-ya, LV Shu-hui, ZHANG Peng, YU Yan-qiu
Research Center of Coastal and Urban Geotechnical Engineering, Zhejiang University, Hangzhou 310058, China
 全文: PDF(1237 KB)   HTML
摘要：

针对“静钻根植竹节桩”这一新桩型的特点,建立考虑桩周土径向和竖向非均质的桩体纵向振动定解问题.采用阻抗函数递推方法,结合拉氏变换对定解问题进行求解,得到桩顶阻抗函数.利用卷积定理和傅里叶逆变换，求得任意激振力作用下桩顶速度响应的半解析解.通过比较低频范围内桩顶复刚度响应曲线和时域内桩顶速度响应曲线,分析竹节长度和竹节半径、桩周扩底高度和扩底半径、浆液配比及桩周水泥土硬化的时效性和搅拌均匀性等因素对桩顶动力响应的影响,揭示这一新桩型的动力特性.将理论计算曲线与现场实测曲线进行拟合对比.结果表明：理论计算曲线与现场实测曲线较为吻合,采用所建立的模型能够较好地反映静钻根植竹节桩的实际动力特性.
Abstract:

Aiming at the characteristics of a new kind of pile named static drill rooted nodular pile, the vibration problem of pile considering the non-homogeneity of  soil around the pile in both radial and vertical directions was inrestigated.  The impedance functions of a pile about velocity and displacement were derived by means of impedance recursive method integrated with Laplace transform. Then,  the semi-analytical solution for the velocity response of the pile subjected to a semi-sine wave exciting force was developed with convolution theorem and inverse Fourier transform. Through comparison of the response curve in low frequency domain and the response curve in time domain, the effects of several factors were analyzed, such as: the length and  radius of bamboo joint, the height and  radius of expanded-base, the ratio of cement in the serum, the timeliness of the hardening of cement-treated soil around  pile and the mixing uniformity. Thus, the dynamic response of the pile was revealed. Finally, the theoretical calculation curve was compared with the directly measured curve by fitting. Results show that the proposed model  can primly reflect the real dynamic characteristics of static drill rooted nodular pile．
出版日期: 2015-08-28
:  TU 473  
基金资助:

国家自然科学基金资助项目（51378464）
作者简介: 王奎华(1965-)，男，教授，从事桩基动力学理论及土工测试方法研究. E-mail: zdwkh0618@zju.edu.cn
服务　　
把本文推荐给朋友
加入引用管理器
E-mail Alert
RSS
作者相关文章　　

引用本文:

王奎华,李振亚,吕述晖,张鹏,庾焱秋. 静钻根植竹节桩纵向振动特性及应用研究[J]. 浙江大学学报(工学版), 10.3785/j.issn.1008-973X.2015.03.018.

WANG Kui-hua, LI Zhen-ya, LV Shu-hui, ZHANG Peng, YU Yan-qiu. Vertical vibration characteristics of static drill rooted nodular pile and its applications. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 10.3785/j.issn.1008-973X.2015.03.018.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2015.03.018    或    http://www.zjujournals.com/eng/CN/Y2015/V49/I3/522

［1］ NOGAMI T, NOVAK M. Soil-pile interaction in vertical vibration ［J］. Earthquake Engineering and Structural Dynamics, 1976, 4: 277-293．
［2］ NOVAK M, NOGAMI T. Soil-pile interaction in horizontal vibration ［J］. International Journal of Earthquake Engineering and Structural Dynamics, 1977, 5(3): 153-168．
［3］ 王奎华, 谢康和, 曾国熙. 有限长桩受迫振动问题解析解及应用［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．
［4］ 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. 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．
［5］ 胡昌斌,王奎华,谢康和. 考虑桩土耦合作用时弹性支撑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 vibration of a pile with elastic bottom boundaries and its application ［J］. Engineering Mechanics, 2003,20(2):146-154．
［6］ YANG D Y, WANG K H, ZHANG Z Q, et al. Vertical dynamic response of pile in a radially heterogeneous soil layer \[J\]. International Journal for Numerical and Analytical Methods in Geomechanics,2009,33(8):1039-1054.
［7］ MANNA B,  BAIDYA D K. Dynamic nonlinear response of pile foundations under vertical vibration: theory versus experiment ［J］. Soil Dynamics and Earthquake Engineering, 2010, 30(6): 456-469．
［8］ WANG K H, WU W B, ZHANG Z Q, et al. Longitudinal dynamic response of an inhomogeneous viscoelastic pile ［J］. Computers and Geotechnics, 2010, 37: 536-544．
［9］ 王奎华,王宁,吴文兵.预应力管桩焊接缝对桩基完整性检测的影响［J］.浙江大学学报：工学版,2012, 46（9）：1625-1632．
WANG Kui-hua, WANG Ning, WU Wen-bing. Influence of weld on integrity testing of prestressed pipe piles ［J］. Journal of Zhejiang University: Engineering Science, 2012, 46(9):1625-1632．
［10］ GHARAHI A,  RAHIMIAN M, ESKANDARI-GHADI M, et al. Elastostatic response of a pile embedded in a transversely isotropic half-space under transverse loading ［J］. International Journal for Numerical and Analytical Methods in Geomechanics. 2013, 37: 2897-2915．
［11］ TAKASHI H, MADAN B K. Load tests on bored PHC nodular piles in different ground conditions and the bearing capacity based on simple soil parameters ［J］. Journal of Architecture and  Building Seience, 1995, 1:89-94.
［12］ KOBAYASHI K, OGURA H. Vertical bearing capacity of bored pre-cast pile with enlarged base considering diameter of the enlarged excavation around pile toe ［J］. Advances in Deep Foundations, 2007:277-283.
［13］ FUTAMI M B K T, OGURA H, TOMONO M, et al. Considering group behavior of friction piles for settlement analysis of buildings ［C］∥ Structural Engineering World Congress, Yokohama：SEWC 2002:18．
［14］ NOVAK M, ABOUL-ELLA F. Dynamic soil reaction for plane strain case ［J］. Journal of the Engineering Mechanical Division, 1978a, 104(EM4): 953-959．
［15］ RANDOLPH M F, DEEKS A J. Dynamic and static soil models for axial pile response ［C］ ∥ Proceedings of the 4th International Conference on the Application of Stress Wave Theory to Piles. Hague: CRC, 1992: 21-24．
［16］ 王腾,王奎华,谢康和. 任意段变截面桩纵向振动的半解析解及应用［J］.岩土工程学报,2000,22（6）：654-658．
WANG Teng, WANG Kui-hua, XIE Kang-he. A quasi-analytical solution to longitudinal vibration of pile with variable sections and its application ［J］. Chinese Journal of Geotechnical Engineering, 2000, 22（6）:654-658．
[1] 吴意谦,朱彦鹏. 潜水地区基坑降水诱发地面沉降的一种改进算法[J]. 浙江大学学报(工学版), 2016, 50(11): 2188-2197.
[2] 袁炳祥, 吴跃东, 陈锐, 冯仲文, 汪亦显. 侧向受荷桩周土体内部位移场的模型试验研究[J]. 浙江大学学报(工学版), 2016, 50(10): 2031-2036.
[3] 徐铨彪,陈刚,贺景峰,龚顺风. 复合配筋混凝土预制方桩抗弯性能试验[J]. 浙江大学学报(工学版), 2016, 50(9): 1768-1776.
[4] 单华峰, 夏唐代, 俞峰, 胡军华, 潘金龙. 地下增层开挖托换桩的屈曲稳定临界荷载分析[J]. 浙江大学学报(工学版), 2016, 50(8): 1425-1430.
[5] 何奔,王欢,洪义,王立忠,赵长军,秦肖. 竖向荷载对黏土地基中单桩水平受荷性能的影响[J]. 浙江大学学报(工学版), 2016, 50(7): 1221-1229.
[6] 邱子义,韩同春,豆红强,李智宁. 桩后及桩侧土拱共同作用的抗滑桩桩间距分析[J]. 浙江大学学报(工学版), 2016, 50(3): 551-558.
[7] 庾焱秋,王奎华,吕述晖,徐礼阁. 传感器黏结剂对低应变测试曲线的影响[J]. 浙江大学学报(工学版), 2015, 49(9): 1725-1730.
[8] 苟尧泊,俞峰,夏唐代. 增层开挖引起既有预制桩残余应力释放分析[J]. 浙江大学学报(工学版), 2015, 49(5): 969-974.
[9] 刘念武, 龚晓南, 俞峰. 大直径钻孔灌注桩的竖向承载性能[J]. 浙江大学学报(工学版), 2015, 49(4): 763-768.
[10] 龙凡, 王立忠, 李凯, 李玲玲. 舟山黏土和温州黏土灵敏度差别成因[J]. 浙江大学学报(工学版), 2015, 49(2): 218-224.
[11] 王奎华,陈鑫,吕述晖,吴文兵,李振亚. 自由振动时带承台单桩的纵向动力特性[J]. 浙江大学学报(工学版), 2014, 48(9): 1595-1602.
[12] 刘念武,龚晓南,楼春晖. 软土地区基坑开挖对周边设施的变形特性影响[J]. 浙江大学学报(工学版), 2014, 48(7): 1141-1147.
[13] 伍程杰, 龚晓南, 俞峰, 楼春晖, 刘念武. 既有高层建筑地下增层开挖桩端阻力损失[J]. 浙江大学学报(工学版), 2014, 48(4): 671-678.
[14] 胡安峰, 张光建, 贾玉帅, 张晓冬. 刚度衰减模型在大直径桩累积侧向位移分析中的应用[J]. J4, 2014, 48(4): 721-726.
[15] 王忠瑾,谢新宇,方鹏飞,李金柱,金伟良. 刚性长短组合桩的非线性沉降计算分析[J]. J4, 2014, 48(3): 463-470.