Large-span steel tubular arched bridge vertical rotation construction and linear control method

The invention discloses and provides a large-span steel tubular arched bridge vertical rotation construction and linear control method which is easy for controlling the elastic deformation, short in construction period, fewer in nodes, good in installation quality and rapid and safe in installation. A large-span steel tubular arched bridge comprises at least two half-span arched ribs. The method comprises the following steps: slightly and vertically adjusting the linearity of an upstream arched rib and a downstream arched rib and relative positions of the arched ribs on two banks; arranging a steel stranded cable on a vertical web member which is closest to a closure opening, and slightly adjusting the transverse relative position of the steel stranded cable and the closure opening between the arched ribs on two banks; arranging two pairs of refined threaded steel on a chord pipe of the closure opening so as to slightly adjust the transverse relative positions between the inner chord pipes of the arched ribs, and forming tension brace inside the arched ribs; rigidly connecting the arched ribs by adopting two jacks and two liner pipes, wherein each jack acts on an upper chord of a main chord pipe, and each liner pipe acts on a lower chord of the main chord pipe.