Automatic supporting assembly and underground diaphragm wall steel box construction method adopting automatic supporting assembly

The invention relates to the field of underground diaphragm wall intelligent construction equipment, in particular to an automatic supporting assembly and an underground diaphragm wall steel box construction method adopting the automatic supporting assembly. The supporting equipment comprises a multifunctional chassis, and a supporting frame mechanism is arranged on the multifunctional chassis. The support frame mechanism comprises a plurality of support frame bodies; the adjacent supporting frame bodies are sequentially stacked. An extrusion limiting structure is arranged on the side face of each supporting frame body. According to the automatic supporting assembly, rigid supporting can be conducted on the steel box, the stability and safety of the steel box in the butt joint construction process are improved, steel box construction can still be conducted safely even in the weather environment with large wind power, and therefore the construction progress can be guaranteed, and the project construction cost