Bridge integrally-assembled pier and construction method

Abstract

The invention discloses a bridge integrally-assembled pier and a construction method. The structural system of the bridge integrally-assembled pier is composed of integrally-assembled PHC pipe piles, assembled bearing platforms, an assembled tie beam, segment prefabricated pier bodies, an assembled cover beam and other components. The assembled bearing platforms, the assembled tie beam, the segment prefabricated pier bodies and the assembled cover beam are connected through steel pipes and a prestressing system. In the installation process, a prestressing tendon penetrates through all the components at first, positioning is completed through steel pipe sleeves under the self weight condition, the prestressing steel tendon is tensioned integrally, and a system is formed. According to the bridge integrally-assembled pier and the construction method, the components all adopt an industrialized production process and an assembly installation process, the construction period is shortened, and environment protecting is facilitated; a part of the components is made of high-strength concrete, so that materials are saved, and the construction cost is reduced; the detachable, replaceable and recycling effects are achieved, and energy saving and emission reducing are facilitated; and the seismic performance of the system is excellent.

Description

technical field [0001] The invention relates to the field of bridge engineering construction, in particular to a structural form and a construction method of an integrally assembled pier of a bridge. Background technique [0002] Assembled bridge piers are divided into several components along the vertical modularization, such as cap beams (pier caps), pier bodies, caps, pile foundations, etc., which are manufactured in factories or prefabricated sites, and then transported to the construction site for construction. Assembled on site. Compared with cast-in-place components, its advantages mainly include: factory prefabrication and other stages of construction on site can be carried out at the same time, shortening the construction period; factory standardized production is conducive to quality assurance and reduced labor costs; it is conducive to environmental protection and has better adaptability in complex climates and environments. powerful. This is in line with the de...

AI Technical Summary

Problems solved by technology

The amount of concrete and steel used in the prefabricated components of the traditional bridge substructure is equivalent to that of the cast-in-place structure, and the economy is at a disadvantage after considering the transportation and hoisting costs

Secondly, the existing assembly and connection methods of prefabricated components include flange welding, cast-in-place embedded and steel anchoring, etc., the process is relatively complicated, the construction is difficult and the seismic performance is insufficient

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