Deep foundation pit supporting device

The utility model relates to a deep foundation pit supporting device which comprises a supporting pile and a diagonal bracing steel pipe. A plurality of vertical steel plates and steel pipes are arranged in the support piles, and the steel plates and the steel pipes are connected in a penetrating manner; the upper end of the supporting pile is fixedly sleeved with a surrounding purlin, a through hole is formed in the upper end of the steel plate, the upper end of the inclined strut steel pipe is inserted into the surrounding purlin and penetrates through the through hole in the upper end of the steel plate, and an acute angle is formed between the inclined strut steel pipe and the supporting pile. Inclined steel bars are welded at the upper ends of the inclined strut steel pipes and are arranged in the enclosing purlins; the lower end of the inclined strut steel pipe is inserted into a soil layer and provided with a plurality of holes. 本实用新型涉及深基坑支护装置，包括支护桩和斜撑钢管；所述支护桩中设置有多个竖向的钢板和钢管，所述钢板和钢管穿插连接；所述支护桩的上端固定套设有围檩，