Arch bridge shape-finding device based on inverse hoisting method and using method of arch bridge shape-finding device

The invention belongs to the technical field of bridges, and particularly relates to an arch bridge shape-finding device based on an inverse hoisting method and a using method of the arch bridge shape-finding device based on the inverse hoisting method. Two ends of the arch-shaped piece are connected with the fixing components; the bridge floor beam component is arranged below the arched piece, and a sliding block is arranged on the bridge floor beam component; and one end of the suspender is connected with the fixing member. According to the device, a designer can intuitively observe the change of the structural form. The use method of the arch bridge shape finding device based on the inverse hoisting method comprises the following steps: fixing the fixing component; the arch-shaped piece is installed on the fixing component through the first adjusting buckle; connecting one end of the suspender to the arch piece; a sliding block is installed on the bridge deck beam component, a second adjusting buckle is in