Medium-high steel arch bridge rotation construction device and method

Abstract

The invention relates to a medium-high steel arch bridge rotation construction device and method which are used for realizing sectional rotation construction of a steel arch bridge. The steel arch bridge comprises an arch foot and a semiarch section, the arch foot is fixed on a deck beam, the arch foot is provided with a parting face matched with the semiarch section, the construction device comprises a hinge support, a backward-pulling mechanism, a lifting mechanism and a supporting mechanism, the hinge support is fixed on the arch foot and below the parting face, the semiarch section can rotate around the hinge support, the supporting mechanism is mounted on the semiarch section, one ends of the backward-pulling mechanism and the lifting mechanism are connected with one end, away from the semiarch section, of the supporting mechanism, the other end of the backward-pulling mechanism is fixed on the deck beam, and the other end of the lifting mechanism is connected with one end, away from the arch foot, of the semiarch section. Compared with the prior art, the construction device has the advantages that welding quality and stability are ensured, and arch bridge construction periodis shortened greatly.

Description

technical field [0001] The invention relates to the technical field of bridge construction, in particular to a swivel construction device and construction method of a medium-high steel arch bridge. Background technique [0002] In recent years, with the progress of the society, the development of the economy, and the improvement of aesthetics, more and more bridge designs are not limited to the realization of the use function, but more attention is paid to the novelty and uniqueness of its shape, and the organic design of the urban landscape. Combination etc. Various forms of steel arch bridges continue to emerge, and the super-high, super-heavy and super-large steel arch sections bring great challenges to bridge construction. However, the traditional steel arch bridge construction methods such as suspension assembly method, truss outrigger method, erection method, etc., when the span is large, the self-weight is large and the building height is high. Generally, the support...

AI Technical Summary

Problems solved by technology

However, the traditional steel arch bridge construction methods such as suspension assembly method, truss outrigger method, erection method, etc., when the span is large, the self-weight is large and the building height is high. Generally, the support method has many construction procedures, and the arch rib joint more

Therefore, there are disadvantages such as long cycle, large amount of high-altitude welding, difficulty in guaranteeing welding quality, potential safety hazards for operators, large tonnage of cranes, and high cost of construction measures.

Therefore, this traditional extensive and low-efficiency construction method is no longer suitable

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