Mechanical behavior of three-hinge precast arch culvert in construction process through model experiment

抄録

In recent years, the construction of precast arch culverts, which include hinges in the main body, has been increasing. Precast arch culverts have hinge function, and thus, the evaluations of the mechanical behavior in construction process and the dynamic interaction between the soil and the culvert has become an important issue. The authors conducted 1/5 scale shaking table test to clarify the seismic behavior of a three-hinge precast arch culvert. Furthermore, the inner space displacement and the earth pressure of the culvert were measured at each construction stage. In this study, the relationship between the deformation of the culvert and the earth pressure acting on the culvert during construction process is discussed. From the results, it has been confirmed that the horizontal earth pressure acting on the culvert is larger than the earth pressure at rest because of the passive earth pressure when the banking height is higher than the crown.