Construction method of wave-shaped micro pile structure for foundation reinforcement

The invention relates to a construction method of a wave-shaped micro pile structure for foundation reinforcement. According to the technical scheme, the construction method of the wave-shaped micro pile structure for foundation reinforcement is characterized by comprising the steps that preparation work is conducted, specifically, measuring, positioning and paying off are conducted, and a pile foundation is in place; drilling to form a micro pile hole; a spray head of a jet grouting machine tool is arranged at the designed elevation position of the bottom of the micro pile in the pile hole; a high-pressure jet grouting technology is adopted for forming a pile body in a drilled hole, the pile body is composed of expansion bodies and uniform cylinders in an alternating mode from bottom to top, the diameter of the expansion bodies is larger than that of the uniform cylinders, and during pile forming, all sections of the pile body form the uniform cylinders or the expansion bodies by controlling high-pressure je