Large-span corridor between unequal-height high-rise buildings

The invention relates to the field of corridors, in particular to a large-span corridor between unequal-height high-rise buildings, which comprises a bottom plate layer, a top plate layer, chord pipes, web members and preassembled pipes, elastic plates for the chord pipes to abut against are arranged on the preassembled pipes, and avoiding mechanisms for avoiding the elastic plates when the chord pipes on the top plate layer approach are arranged on the four lower preassembled pipes. The elastic plate can be reset again after successful avoidance; a connecting rod and a first elastic piece are arranged in the preassembling pipe; a positioning groove is formed in the upper surface of the connecting rod, a through hole communicated with the elastic plate and the positioning groove is formed in the preassembling pipe, a positioning rod which penetrates through the through hole and is inserted into the positioning groove is arranged on the elastic plate, and the positioning rod is used for positioning the connect