| 英文摘要 |
In order to study the seismic behavior and soil-structure interaction of scoured bridges, shaking table tests were conducted on a model piled bridge foundation placed in the biaxial laminar shear box at the National Center for Research on Earthquake Engineering(NCREE), Taiwan. The model included a lumped mass representing the superstructure, a steel column, and a footing supported by an aluminum pile. The pile tip was fixed at the bottom of the shear box to simulate a pile embedded in a firm stratum. Strain gauges and accelerometers were placed on the pile surface to observe its behavior during the tests. Accelerations and displacements at various depths of soil specimen and settlement of the ground surface after each shaking were also measured. The model was subjected to oneand two-dimensional shakings, including white noise acceleration, sinusoidal acceleration and earthquake records. The performance of the model piled bridge foundation at various scouring conditions is discussed in this report. |
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