Steel Bridge Truss Construction Skills, Steel Bridge Manufacturers Assembly Attention Points

              Steel bridge manufacturers, it is a truss girder assembled from steel bridges, and most of the steel bridges are connected by the hair window and fixed with bolts.

      Purpose: Because of its rapid erection and strong mobility, it is mostly used to erect simple bridges on rivers and cliffs during wartime. Now it is mostly used in engineering construction, such as gantry cranes, construction platforms, engineering access bridges, etc.

      Features: Steel-framed bridges are convenient and fast. They provide preconditions for support in many continuous cast-in-place beams that span highways and rivers. In the construction of hanging baskets and expressways across rivers, it can also provide access roads for construction, increasing the speed and convenience of construction. Bridge assembly with reinforced chords: A bridge with reinforced chords refers to the addition of reinforced chords to the upper and lower chords of the truss. The structure and connection parts are basically the same as those of a non-reinforced bridge. Strengthening chords are added to the upper and lower chords of each truss in the middle of the bridge. The chord bolts are used for the connection between the reinforced chord and the truss, and the reinforced chords are connected by truss pins. In order to prevent the bridge from being obstructed during the advancing process, inclined chords are installed at the truss where no reinforced chords are provided at the lower chords of the bridge. In a double-row or three-row reinforced bridge, the top support frame between the first row and the second row of trusses is installed on the reinforced chord. The support bolts connecting the support frame and the reinforced chord must be pre-installed on the reinforced chord before the reinforced chord is connected to the truss, otherwise the bolts cannot be inserted when the support frame is installed.

      ① After the second section of truss is assembled, assemble the third section of the inner row of trusses.

      ② Install the beam in front of the vertical rod at the rear end of the second section of the truss, clamp it with the beam clamp, but do not tighten it.

      ③ Install diagonal braces on the second beam, and install the wind-resistant tie rods of this section of the truss at the same time, to assemble the third section of the outer row of trusses of the bridge. The wind resistance rod will not be tightened temporarily.

      ④ Install the middle cross beam of the second section and clamp it with a cross beam clamp.

      ⑤Install the support frame and tighten the wind-resistant tie rods and beam clamps of the second section of the bridge. The following sections are assembled according to the same procedure.