Vibratory pile driving method has been adopted in onshore and offshore pile installation projects. However, its adverse impact on the surrounding environment remains unclear. This paper proposed an integrated MPM–FEM method to simulate the site vibration caused by the pile driving. An absorbing boundary that can take \({K}_{0}\) state into account was developed to transfer stress and velocity information as a shared boundary for the two methods. Then, the proposed method is validated by simulating the rigid strip foundation penetration and wave propagation. The bounding surface constitutive model was introduced to simulate the cyclic shakedown and degradation behavior of soil. Finally, the site vibration assessment under pile driving was analyzed for the ancient masonry seawall of Qiantang River based on the integrated MPM–FEM method. The calculated results based on the proposed model are consistent with the in situ measurements, which suggests that the proposed method can provide a reference for the evolution of soil dynamics response during vibratory pile driving.
