Horizontal static load test device and method

The invention relates to the technical field of foundation detection, in particular to a horizontal static load test device and method. The device comprises a jack, a mounting frame, a mounting seat, a screw rod, a fastening piece a, a hinging part and an indicating part, a groove is formed in the mounting frame; a through hole a is formed in the bottom surface of the groove; the end face, away from the mounting frame, of the mounting base is arranged to be an inwards-sunken spherical face a. The screw is in threaded fit connection with the mounting seat; the fastening piece a penetrates through the through hole a and is detachably connected with the screw rod; the hinging part is connected with the fixed end of the jack, and the spherical surface b of the hinging part presses the spherical surface of the mounting seat; an identification part for identifying the sphere center position of the spherical surface at the other end of the hinge part is arranged on the hinge part; in the initial state, the indicatin