EXPERIMENTAL STUDY ON DIFFERENTIAL SETTLEMENT CONTROL PER￣FORMANCE OF PRESTRESSED REINFORCED CUSHION

Differential settlement is one of the main factors that cause road damage and traffic accidents. Reinforced soil technology is widely used as an economic control measure. We design a comparative model test between reinforced cushion and prestressed reinforced cushion and study the deformation law and the differential settlement control performance of the prestressed reinforced cushion. The comparative tests revealed the excellent deformation control ability of prestressed reinforced cushion under differential settlement. The results show that prestressed reinforced cushion can effectively reduce differential settlement, especially the serious differential settlement near the interface of soft and hard roadbed. In addition, prestressed reinforced cushion has better energy dissipation capacity. And stress superposition occurs when the additional stress is transferred from the cushion to the roadbed, and increasing trend will appear. The paper can provide reference and basis for the performance research and engineering application of prestressed reinforced structures under differential settlement.