Foundation pit supporting structure

The utility model provides a foundation pit supporting structure, which relates to the field of geotechnical engineering, and comprises a plurality of steel pipe piles arranged on the outer side of a foundation pit, a plurality of connecting cross beams arranged on the side surfaces of the plurality of steel pipe piles, a plurality of supporting piles arranged on the side surfaces of the plurality of connecting cross beams, and a crown beam arranged above the plurality of steel pipe piles, a plurality of mounting holes are formed in the surface of the top beam, the top ends of the steel pipe piles are all located on the inner sides of the mounting holes of the top beam, and the mounting holes of the top beam are attached to the outer sides of the steel pipe piles. Meanwhile, the supporting structure has the advantages of being simple, convenient and fast to construct, short in construction period, good in integrity and free of occupying underground space outside the foundation pit, the distance between the re