Abstract：A study on longitudinal vibration of a viscoelastic pile has been solved by integral transformation method in this paper， with transfer function and impulse response function of pile-soil system have been obtained as well. The analytical solution of displacement(velocity) at the pile top subjected to any form of excitation，can be solved by the convolution of impulse response function and excitation function. This method overcomes the limit of the method of separation of variables，in which only steady-sine excitation can be considered，and extends the adaptability of the solution. Furthermore，this paper also proposes a case study of low-strain integrity testing considering high-frequency disturbing signal. Because of the existence of pile damping，the response to high-frequency component of testing signal would be filtered automatically，and the waveform of subsequently reflection corresponds to low-frequency component would be wide and flat at the same time. When the pile damping is quite great，the location of take-off point of reflection would be shifted，and can?t be the basis for the test of one dimensional elastic wave velocity.
吴君涛1，2，王奎华1，2，高 柳1，2，肖 偲1，2，李振亚1，2. 考虑桩身材料阻尼的桩基纵向振动积分变换解及其应用[J]. 岩石力学与工程学报, 0, (): 152-152.
WU Juntao1，2，WANG Kuihua1，2，GAO Liu 1，2，XIAO Si1，2，Li Zhenya1，2. Study on longitudinal vibration of a viscoelastic pile by integral transformation and its application. , 0, (): 152-152.