Prefabricated UHPC formwork concrete-filled bridge guardrail and construction method thereof

Abstract

The invention belongs to the technical field of bridge engineering, and particularly relates to a bridge guardrail with a prefabricated UHPC formwork filled with concrete and a construction method thereof.The bridge guardrail comprises the prefabricated UHPC formwork, a plurality of embedded steel bars and at least one grouting hole, and the UHPC formwork comprises a first shell, a second shell and a third shell; the first shell, the third shell and the second shell are sequentially connected and integrally formed to define a UHPC mold shell; the second shell comprises a first prefabricated plate, a second prefabricated plate and a third prefabricated plate which are sequentially connected, the other end of the first prefabricated plate is connected with the third shell, and a plurality of reserved channels are formed in the third prefabricated plate to form a grid-shaped structure; one end of each pre-embedded steel bar is pre-embedded in the first shell, and the other end of each pre-embedded steel bar is pre-embedded in the second shell; the grouting hole is formed in the third shell and used for concrete grouting. The semi-prefabricated and semi-cast-in-place mode is adopted, the formwork project of site construction is reduced, and the construction efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of bridge engineering, and in particular relates to a prefabricated UHPC formwork filled with concrete bridge guardrail and a construction method thereof. Background technique [0002] At present, the traditional reinforced concrete guardrail generally adopts the structural form of erecting formwork and cast-in-place. When the bridge deck is poured, the protruding steel bars are embedded, and then the guardrail steel bars are bound and formed with the bridge deck protruding steel bars to form a steel skeleton, and finally the formwork is poured to construct the anti-collision guardrail. [0003] The existing reinforced concrete guardrail has the following shortcomings: 1. The traditional reinforced concrete guardrail often has the disadvantages of cumbersome binding of steel bars, time-consuming template construction, and large on-site workload; 2. As the final process of the construction of the main structu...

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Problems solved by technology

[0003] The existing reinforced concrete guardrails have the following disadvantages: 1. Traditional reinforced concrete guardrails often have the disadvantages of cumbersome binding of steel bars, time-consuming formwork construction, and large on-site workload; 2. As the final process of bridge main structure construction, traditional guardrails need to be poured A lot of time slows down the overall construction progress; 3. The cast-in-place guardrail also has shortcomings such as low degree of industrialization and heavy pollution, which does not conform to the trend of green buildings

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