基于行波分解的泛频响函数法在高承台桩灾后无损检测评估中的应用研究

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摘要针对现有方法在高承台桩灾后无损检测和评估中的局限性，本文提出了基于行波分解的泛频响函数法。首先，将承台对桩顶的作用简化为粘弹性支撑边界，采用自行编制的波动分析程序求得检测截面处的泛频响函数；然后，通过在该位置虚拟输入半正弦激励脉冲，将泛频响函数所包含的信息转换到时域内进行分析，得到检测截面以下虚拟隔离单桩桩顶的速度时域响应曲线；最后，分析了相关参数对泛频响函数和由此转换而来的时域响应的影响。结果表明，基于行波分解的泛频响函数法，能在不破坏上部结构的前提下，完全消除其对检测结果的影响，从而将复杂结构体系下的基桩转化到单桩模式下进行检测分析，简化了检测步骤，降低了分析难度。

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	李振亚1
	王奎华1
	吴文兵2

关键词 ：桥梁工程, 无损检测, 泛频响函数, 高承台桩, 行波分解, 波动分析程序

Abstract：The universal frequency response function method based on traveling wave decomposition is put forward aiming at the limitation of the existing methods in nondestructive testing and assessment of post-disaster tall platform pile foundation. Firstly, the reaction of the pile cap acting on the pile head is simplified as complex impedance, and the universal frequency response function of the test section is calculated by using wave equation analysis program. Then, the information contained in the universal frequency response function is switched from the frequency domain to the time domain by virtually applying a half-sine pulse at the test section. As a result, the time domain response curve of the virtually isolated single pile below the test section is obtained. Finally, a parametric study was undertaken to investigate the influences of pile-soil parameters on universal frequency response function as well as the time domain response translated from it. The results show that the method proposed can completely eliminate the influence of the superstructure, which simplifies the testing procedure and reduces the difficulty of analysis.

Key words： Bridge engineering Nondestructive test Universal frequency response function Tall platform pile Traveling wave decomposition Wave equation analysis program

收稿日期: 2016-02-24 出版日期: 2017-09-28

引用本文:

李振亚1，王奎华1，吴文兵2. 基于行波分解的泛频响函数法在高承台桩灾后无损检测评估中的应用研究[J]. 振动与冲击, 2017, 36(19): 21-28.
LI Zhen-ya1, WANG Kui-hua1, WU Wen-bing2. Application of the Universal Frequency Response Function Method Based on Traveling Wave Decomposition in Nondestructive Testing and Assessment of Post-disaster Tall Platform Pile Foundation. JOURNAL OF VIBRATION AND SHOCK, 2017, 36(19): 21-28.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2017/V36/I19/21

[1] 徐攸在，刘家林，刘杰.用小应变动测法测定码头桩完整性的初步探讨[J].港工技术，2001，8（34）：36-37.
XU You-zai, LIU Jia-lin, LIU Jie. Preliminary investigation of integrity testing of pier piles by low-strain dynamic method[J]. Port Engineering Technology, 2001, 8(34): 36-37.
[2] 孙熙平，王元战，徐满意，等.高桩码头基桩完整性检测技术研究综述[J].港工技术，2010,47（2）：50-53。
SUN Xi-ping, WANG Yuan-zhan, XU Man-yi, et al. Research summary of integrity detection for high-piled wharf pile[J]. Port Engineering Technology, 2010, 47(2): 50-53.
[3] 孙熙平，王元战，徐满意。等.应力波在高桩码头基桩中传播数值模拟研究[J].港工技术，2010,47（4）：26-28.
SUN Xi-pin, WANG Yuan-zhan, XU Man-yi, et al. Numerical research of wave propagation in foundation pile of high-piled wharf[J]. Port Engineering Technology, 2010, 47(4): 26-28.
[4] 柴华友, 刘明贵, 白世伟, 等.应力波在承台-桩系统中传播数值分析[J].岩土工程学报，2003，25（5）：624-628.
CHAI Hua-you, LIU Ming-gui, BAI Shi-wei, et al. Numerical analysis of wave propagation in platform-pile system[J]. Chinese Journal of Geotechnical Engineering, 2003, 25(5): 624-628.
[5] 柴华友，刘明贵，李祺，等.应力波在平台-桩系统中传播的实验研究[J].岩土力学，2002,23（4）：459-464.
CHAI Hua-you, LIU Ming-gui, LI Qi, et al. Propagation of stress waves in a plate-pile system: experimental studies[J]. Rock and Soil Mechanics, 2002, 23(4): 459-464.
[6] ADDISON P S, SIBBALD A, WATSON J N. Wavelet analysis: a mathematical microscope with civil engineering applications. Insight 1997; 39(7): 493–497.
[7] ADDISON P S, WATSON J N. Wavelet analysis for low-strain integrity testing of foundation piles. Proceedings of the 5th International conference on inspection, appraisal, repairs, maintenance of buildings and structures, Singapore; 1997. p. 15–16.
[8] NI S H, LO K F, LEHMANN L, et al. Time-frequency analyses of pile-integrity testing using wavelet transform [J]. Computers and Geotechnics, 2008, 35: 600-607.
[9] HARTUNG M, MEIER K, RODATZ W. Integrity testing on model pile. Proceedings of the 4th international conference on the application of stress-wave theory to piles. Netherlands, Rotterdam; 1992. p. 265–271.
[10] LO K F, NI S H, HUANG Y H. Non-destructive test for pile beneath bridge in the time, frequency, and time-frequency domains using transient loading[J]. Nonlinear Dynamic, 2010, 62: 349-361.
[11] GASSMAN S L, FINNO R J. Cutoff frequencies for impulse response tests of existing foundation[J]. Journal of Performance of Constructed Facilities, 2000, 14(1): 11-21.
[12] DAVIS A G. Nondestructive evaluation of existing deep foundations[J]. Journal of Performance of Constructed Facilities, ASCE, 1995, 9(1): 57-74.
[13] DAVIS A G, EVANS J G, HERTLEIN B H. Nondestructive evaluation of concrete radioactive waste tanks[J]. Journal of Performance of Constructed Facilities, ASCE, 1997, 11(11): 161-167.
[14] FINNO R J, OSBORN P W. Parallel seismic evaluation of the NDE Test Section at the National Geotechnical Experimentation Site at Northwestern University[R]. The Infrastructure Technology Institute, Northwestern University, 1997.
[15] NI S H, HUANG Y H, ZHOU X M, et al. Inclination correction of the parallel seismic test for pile length detection[J]. Computers and Geotechnics, 2011, 38: 127-132.
[16] HUANG D Z, CHEN L Z. Studies on parallel seismic testing for integrity of cemented soil columns[J]. Journal of Zhejiang University SCIENCE A, 2007, 8(11): 1746-1953.
[17] HUANG D Z, CHEN L Z. 3D finite element analysis of parallel seismic testing for integrity evaluation of in-service piles[C]. Geo-Denver 2007: New Peaks in Geotechnics, 2007.
[18] LIAO S T, TONG J H, CHEN C H, et al. Numerical simulation and experimental study of parallel seismic test for piles[J]. International Journal of Solids and Structures, 2006, 43: 2279-2298.
[19] 陈龙珠，赵荣欣. 旁孔透射法确定桩底深度计算方法评价[J].地下空间与工程学报,2010,6(1): 157-161.
CHEN Long-zhu, ZHAO Rong-xin. On Determination Of Pile Length With Parallel Seismic Testing For Existing Structures[J]. Chinese Journal of Underground Space and Engineering, 2010,6(1): 157-161.
[20] 杜烨，陈龙珠，马晔，等. 旁孔透射法确定桩底深度方法的有限元分析[J]. 防灾减灾工程学报,2012,32(6): 731-736.
DU Ye, CHEN Long-zhu, MA Ye, et al. Determination Of Pile Length Using Parallel Seismic Testing With FEM Simulation[J]. Chinese Journal of Disaster Prevention and Mitigation Engineering, 2012,32(6): 731-736.
[21] 黄大治，陈龙珠.旁孔透射法检测水泥搅拌桩的三维有限元分析[J]. 上海交通大学学报,2007,41(6): 960-964.
HANG Da-zhi, CHEN Long-zhu. 3D Finite Element Analysis Of Parallel Seismic Method For Integrity Of Cemented Soil Columns[J]. Journal of Shanghai Jiaotong University, 2007,41(6): 960-964.
[22] 黄大治，陈龙珠.旁孔透射波法检测既有建筑物的三维有限元分析[J].岩土力学，2008,29（6）：1569-1574.
HUANG Da-zhi, CHEN Long-zhu. 3D finite element analysis of parallel seismic tests for integrity of piles of existing structures[J]. Rock and Soil mechanics, 2008, 29(6): 1569-1574.
[23] RANDOLPH M F, DEEKS A J. Dynamic and Static Soil Modes for Axial Pile Response. [C]//Proceedings of the 4th International Conference on the Application of Stress Wave Theory to Piles, The Hague, The Netherlands. 1992: 21-24.