Monopile foundations are currently the most significant support form for offshore wind turbines. An experimental investigation of the vibrating monopile was conducted inside the cohesionless saturated sand bed to examine the pore water pressure oscillation response law and amplitude variation features around the monopile under the vibration effect. The experimental results indicate that the vibration loading force Fp, vibration frequency fv and vibration amplitude Av have remarkable impacts on the various characteristics of the pore pressure response around the monopile foundation. The lower t...