External wrapping steel plate connection type segmental prefabricated assembly concrete pier

Abstract

An external wrapping steel plate connection type segmental prefabricated assembly concrete pier comprises a plurality of prefabricated rectangular concrete segments, a cast-in-situ pile cap, a pre-stressed steel strand and a high-strength bolt. A segment joint external wrapping steel plate is arranged around the upper end of each prefabricated rectangular concrete segment, and adjacent prefabricated rectangular concrete segment are in vertical inserted connection. A horizontal pre-embedded positioning steel plate is arranged in the cast-in-situ pile cap, a rectangular space is reserved in thecenter of the pre-embedded positioning steel plate, and the lower edge of each pre-embedded external wrapping steel plate is welded to the center edge of the pre-embedded positioning steel plate whilethe upper portion extends out of the cast-in-situ pile cap to form a space allowing insertion of the bottommost prefabricated rectangular concrete segment. The pre-stressed steel strand penetrates the prefabricated rectangular concrete segments and the cast-in-situ pile cap from top to bottom. The high-strength bolt is arranged at the bottom of the cast-in-situ pile cap to anchor the pre-stressedsteel strand extending out of the cast-in-situ pile cap. By prestress of the pre-stressed steel strand, the self-reset performance is improved; by the external wrapping steel plates, shear resistanceof the segmental prefabricated assembly concrete pier is improved, easiness in industrial manufacturing is achieved, onsite construction procedures are reduced, and construction efficiency is greatlyimproved.

Description

technical field [0001] The invention belongs to the technical field of bridge engineering, in particular to a prefabricated assembled segmental concrete bridge pier connected by outsourcing steel plates. Background technique [0002] With the rapid development of urban traffic, people are increasingly calling for high-quality bridge construction, short construction period, and reducing disturbance to surrounding traffic and construction noise. It is against this background that segmental prefabricated piers come into use. And born. Segmental prefabricated assembled bridge piers can be produced in a factory and constructed in a prefabricated manner, thus providing a reliable guarantee for the construction speed and construction quality of the bridge piers. [0003] Segmental prefabricated piers are still in their infancy in my country. Although they have the characteristics of high construction efficiency and good quality of prefabricated components, the joints of segmental ...

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Problems solved by technology

[0003] Segmental prefabricated piers are still in their infancy in my country. Although they have the characteristics of high construction efficiency and good quality of prefabricated components, the joints of segmental piers are weak points, especially the shear resistance at the joints. Performance is particularly weak

[0004] At present, the forms and connection devices of most prefabricated segmental assembled piers have disadvantages such as complex construction technology and large amount of on-site construction work. Therefore, in view of the above problems, a new connection method with good shear resistance and high self-resetting ability is still needed

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