Lock catch steel pipe pile and foundation pit enclosure structure

The invention discloses a lock catch steel pipe pile and a foundation pit enclosure structure. A first lock catch and a second lock catch are connected to the outer wall of a steel pipe of the lock catch steel pipe pile, and the first lock catch and the second lock catch are arranged in the axis direction of the lock catch steel pipe pile. In every two adjacent lock catch steel pipe piles, the first lock catch of one lock catch steel pipe pile is connected with the second lock catch of the other lock catch steel pipe pile in a matched mode. According to the lock catch steel pipe pile and the foundation pit enclosure structure, when a foundation pit is enclosed by connecting the lock catch steel pipe piles, the assembly operation is simple, the complex process of pouring a large number of occlusive piles and continuous walls in the traditional construction process is omitted, meanwhile, the lock catch steel pipe pile has the characteristics that materials can be obtained conveniently, and manufacturing is easy