Abstract. The experimental research of the form of behavior of structures and constructions under the effect of seismic load is of big practical interest. The most reliable way of experimental research of seismic effect is the instrumental observation of the form of behavior of an actual structure, construction or their model during a major earthquake. The result of experimental research of the possibility of simulating two-component seismic load with the utilization of systems of directional vibration machines is given in this work. The principle of the method of simulating the seismic load is that for vibration excitation in two mutualperpendicular directions on the floors of the 9,6 and 3 floors of the model ( in the places of onset of maximal shifting for the according mode) 6 directional oscillating machines were installed. The first three oscillating machines were exciting vibrations in the transverse direction and the other three in the longitudinal direction of the building (since the first three modes of vibrations are quintessential for multistory buildings). Each of the vibrators excited oscillations in a specific mode. It is demonstrated that with simultaneous effect of machines in two mutual-perpendicular directions, the duty cycle of the vibrations does not change. This allows for simulating the seismic load on the building in each direction separately.

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