High-pier arc-shaped upper cross beam lightweight support system and mounting method thereof

Abstract

The invention discloses a high-pier arc-shaped upper cross beam lightweight support system and a mounting method thereof. The system comprises an arc-shaped bridge tower, a reserved hole penetrating through the arc-shaped bottom of a cross beam is formed in the cross beam of the bridge tower, a dismounting system and a mooring rope are arranged on the cross beam and correspond to the reserved hole, and a lower supporting frame located on the lower side of the arc-shaped bottom of the cross beam is arranged between the inner walls of tower columns of the bridge tower. An arched truss is arranged between the lower supporting frame and the arc-shaped bottom of the cross beam, the lower supporting frame comprises steel corbels, an upper main beam and a bottom main beam, the steel corbels are symmetrically and fixedly arranged on the inner walls of the tower columns in the transverse direction, the steel corbels located on the upper side are fixedly connected with the upper main beam, and the steel corbels located on the lower side are fixedly connected with the bottom main beam; and inclined strut steel pipes and inclined strut horizontal bracings are fixedly connected between the two ends of the bottom main beam and the upper main beam. According to the high-pier arc-shaped support system and the mounting method thereof, manual high-altitude welding work can be reduced, the section turnover rate is high, the structure is light, and construction and installation are facilitated.

Description

technical field [0001] The invention relates to the technical field of high-pier bridge engineering, in particular to a high-pier arc-shaped upper beam light-weight support system and an installation method thereof. Background technique [0002] At present, for the construction of domestic high pier beams, the form of corbel brackets has gradually replaced the traditional floor-standing steel pipe support system, and the economy and safety have been greatly improved. However, limited by the structural shape of bridge pylon beams, the lightweight design and prefabricated construction of support systems for large-volume and special-shaped structural beams are still the main research directions in the field of bridge construction. The curved beam design of the portal-shaped bridge tower has the characteristics of large volume, complex shape, and large size changes. Therefore, it is extremely difficult to design a high-bearing capacity and light-weight support that meets the con...

AI Technical Summary

Problems solved by technology

The curved beam design of the gate-shaped bridge tower has the characteristics of large volume, complex shape, and large size changes. Therefore, it is extremely difficult to design a high-bearing capacity and light-weight support that meets the construction load of the beam.

In addition, according to the traditional on-site welding process, a large number of profiles are required to be processed manually, which is time-consuming and labor-intensive. A large number of structures need to be welded at high altitudes. The risk of welding quality and construction safety is high, and the turnover rate after cutting off a large number of profiles is low.

Images