Key Laboratory of New Technology for Construction of Cities in Mountain Area;
Chongqing University;
Chongqing 400045;
China;
National Joint Engineering Research Center of Geohazards Prevention in the Reservoir Areas Department;
Chongqing University;
Chongqing 400045;
China;
College of Civil Engineering;
Chongqing University;
Chongqing 400045;
China;
bearing behavior; expansive concrete pile; coral sand; side friction; numerical simulation;