Arch bridge construction method for combined beam-steel arch combined system

Abstract

The invention relates to an arch bridge construction method for a combined beam-steel arch combined system. The method is characterized by comprising the following steps: assembling a steel arch, a steel beam and a temporary supporting rod for connecting the steel arch and the steel beam into an arch beam combined system ashore in advance, arranging pushing guide beams at the ends of the arch beam combined system, performing integral pushing by using pushing equipment arranged at the top of each pier, detaching the temporary rods and the pushing guide beams after the pushing is in place, and tensioning hanging rods in batch to perform bridge deck construction. The invention provides the arch bridge construction method completely different from the traditional methods; and the arch bridge construction method has high popularization values on the aspects of applicability, economy, processing quality, construction period and the like, has development significance for later similar engineering, and can be extended to the construction of steel beam-steel arch combined system arch bridges.

Description

Technical field: [0001] The invention relates to the field of design and construction of arch bridges, in particular to a construction method for an arch bridge with combined beam-steel arch combination system. Background technique: [0002] The traditional construction methods of arch bridges include support construction method, cable hoisting method, swivel construction method and so on. [0003] The swivel construction method divides the arch ring or the entire upper structure into two half-spans, manufactures half-archs on both banks, and then uses a power device to rotate the two half-archs to the position of the bridge axis to form an arch. This method has fast construction speed and low cost. It is lower, but it is not suitable for arch bridges or multi-span continuous arch bridges located in the middle of the river and far from the two banks. [0004] The cable hoisting construction uses the cable hoisting system to carry out the construction without support by sett...

AI Technical Summary

Problems solved by technology

Regardless of the method used to construct the steel beam, the construction of the steel arch requires the erection of supports on the steel beams, often requiring more temporary piers to ensure the force of the steel beams, and the cost of setting temporary piers and erecting supports in the river The difficulty and difficulty are very high, and for rivers with navigation requirements, the location and number of temporary piers will be restricted by navigation

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