Study on pile-soil bonding condition based on transient shock response using piezoceramic sensors

The field evaluation of pile-soil combination is a key step in the service life pile foundation. However, due to time-varying nature interaction, there no efficient method accurately analyze it. This paper introduces health monitoring technique for assessing state bond. transient vibration coupling was measured by piezoelectric ceramic sensor. In experiment, different bond states and soil were simulated taking clay density as an example. A horizontal force applied top pile, induced stress wave detected intelligent aggregate sensor embedded pile. At same time, artificial separation example, binding analyzed, influence conditions on bonding characteristics studied. An energy index quantitative quality proposed. Taking piles buried two layers with densities effects Experimental numerical results verified effectiveness proposed method. three factors influenced coupling. experimental approach pave way directly judge whether between evaluate safety.