The paper presents analysis of dynamic response of multiple support structures to seismic and mining related paraseismic excitation. Dimensions of the basis of structures are comparable with the length of the wave propagating in the ground and due to it they are exposed to non-uniform kinematic excitation. Calculations of the dynamic response were performed for earth dam at Niedzica and for concrete bridge at LGOM. It was stated that non-uniformity of ground movement may cause significant changes in the dynamic response - both its reduction as well as its growth.
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