Dragging-adjustable cross-brace device for continuous beams of spatial steel pipe trusses

A dragging-adjustable cross-brace device for continuous beams of spatial steel pipe trusses belongs to the technical field of road and bridge construction, and is characterized in that cross-brace components are truss structures, each cross-brace component consists of two steel trusses which are connected via a horizontal connecting system, the cross-brace components are connected with an upper chord and a lower chord of a spatial steel pipe truss by shroud rings and steel pins, upper chords and lower chords of the cross-brace components are made of section steel, bidirectional expandable lead screws are disposed at three positions between each piece of cross-brace section steel and each shroud ring, each steel pin is directly arranged at one position between each piece of cross-brace section steel and each shroud ring, the length of each bidirectional expandable lead screw can be determined according to the maximum cross slope of a bent cap, and a dragging section passes through the maximum cross slope. The dragging adjustable cross-brace device has the advantages that the bidirectional expandable lead screws match with pin hole structures, and the dragging adjustable cross-brace device solves technical problems of requirements that positions of perpendicular planes of two steel pipe trusses are adjustable and faulted movement of horizontal planes of the two steel pipe trusses are allowed when the spatial steel pipe trusses pass through small-radius planar curves or bent caps with variable cross slopes and variable widths in a striding manner by means of dragging, is simple in method and has better economical and social benefits.