Device and method for plate load test capable of simulating side load

The invention discloses a device and a method for a plate load test capable of simulating a side load, and belongs to the field of civil engineering. The device comprises a plurality of pressing devices, a first bearing plate and a second bearing plate capable of being nested in the first bearing plate, wherein one pressing device is arranged at a centre of the second bearing plate, the other pressing devices are arranged on the first bearing plate and circumferentially and uniformly distributed about the centre of the second bearing plate, and the first bearing plate is annular or square annular. The invention further discloses an experiment method. The experiment method comprises the steps of S1, nesting the second bearing plate in the first bearing plate; S2, arranging one jack at the centre of the second bearing plate, and uniformly arranging four jacks on the first bearing plate about the centre of the second bearing plate; S3, pressing the first bearing plate stage by stage and maintaining pressure valu