Study of the influence of hard interlayers on seismic parameters via shaking table tests - Nature

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AbstractAccording to the third theorem of similarity, a layered physical model was established using two types of materials with different shear stiffnesses. This model was used to represent the prototype in shaking table tests, and the influences of the burial depth and thickness of the hard interlayer on the amplification factor and on the characteristic parameters of the response spectrum were analysed and studied. The study revealed the following: (1) The influence trends of the burial depth and thickness of the hard interlayer on the amplification factor and on the characteristic period of the response spectrum obtained from the shaking table tests were found to be consistent with those obtained from a one-dimensional equivalent linearization calculation. This comparison serves as a verification of the experimental results rather than as an independent conclusion.