Soft-ground multi-cell twin-cantilever arched bridge structure and its construction method

Abstract

The present invention discloses one kind of multiple-opening double-cantilever arch bridge in soft foundation and its construction process, and belongs to the field of arch bridge building technology. The multiple-opening double-cantilever arch bridge includes two arch bridge abutments, two edge opening cantilever arch beams located between these two arch bridge abutments and several double-cantilever arch beams connected between these edge opening cantilever arch beams. The present invention has the advantages of short construction period, low construction cost and capacity of preventing side shifting or subsidence of the arch bridge abutments.

Description

technical field [0001] The invention discloses a porous double-cantilever arched bridge structure on a soft soil foundation and a construction method thereof, belonging to the technical field of arched bridge construction. Background technique [0002] Arch bridge is the most commonly used type of bridge in my country. It is the crown of all kinds of bridges with its many styles and large quantity. The arch bridge is beautiful in shape, with rounded curves and full of dynamic sense. Porous arch bridges generally have the largest middle hole, and the diameters of the holes on both sides decrease in proportion. When the main arch of a hole is loaded, the load can be transmitted from near to far to the main arch of other holes through the deformation of the pier or the action of the structure on the arch, and finally to the arch foot abutment. Therefore, the arch foot abutment must Withstand large horizontal thrust. For arch bridges on soft soil foundations, large horizonta...

AI Technical Summary

Problems solved by technology

For soft soil foundation arch bridges, under the action of large horizontal thrust, it is easy to cause the arch foot abutment to move sideways or settle, thus affecting the safety of the entire arch bridge

For this reason, arch-foot abutment foundations must be treated with arch-foot foundation anti-thrust treatment. The cost increases, the construction period is lengthened, and the anti-thrust treatment of arch feet on soft soil foundations has always been a technical difficulty. Not ideal, many arch bridges in soft soil areas tend to have bridge deck settlement or cracking with the passage of time

For this reason, there are also some arch bridges that add horizontal tie rods to the arch bottom so that the arch foot abutment does not generate horizontal thrust, thus avoiding the anti-thrust treatment of the arch foot foundation, but the added horizontal tie rods not only reduce the navigable height, but also destroy the beautiful curve of the arch bridge The shape is still unsatisfactory

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