A Formwork-free Rapid Construction Pier Column Based on Centrifugal Method

Abstract

The invention discloses a formwork-free rapid construction pier column based on a centrifugal method, relates to the field of bridge substructure construction, and includes a first prefabricated tubular membrane shell and a second prefabricated tubular membrane shell, the first prefabricated tubular membrane shell Located directly below the second prefabricated tubular membrane shell, the port between the prefabricated tubular membrane shell and the upper pipe end of the second prefabricated tubular membrane shell is provided with a first pipe end connecting steel plate, and the prefabricated tubular membrane shell A second pipe end connecting steel plate is provided at the port between the membrane casing and the lower pipe end of the second prefabricated tubular membrane casing. A prefabricated tubular formwork was invented in the formwork-free rapid construction pier column based on the centrifugal method. The formwork was prefabricated in the factory by the centrifugal method, and the prefabricated sections were of standard length. They were spliced ​​and assembled on site and could be used as the core concrete for pouring pier columns. There is no need to dismantle the formwork on site, the construction speed is fast, the production efficiency is high, and the cost of the formwork is saved at the same time.

Description

Technical field: [0001] The invention relates to the field of bridge substructure construction, in particular to a formwork-free rapid construction pier column based on a centrifugal method. Background technique: [0002] With the continuous development of my country's economy, the scale of infrastructure construction such as bridges continues to expand, and higher requirements are put forward for the production quality, production efficiency, energy conservation and environmental protection of bridge construction. Among them, the bridge substructure piers are indispensable in bridge construction Few components and high demand. [0003] The traditional cast-in-place piers are to erect formwork, tie steel cages, and pour concrete at the construction site. It has the advantages of strong seismic performance of connection nodes and good structural integrity, but has the following disadvantages: [0004] (1) The formwork needs to be disassembled and erected on site, the demand f...

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Problems solved by technology

[0004](1) The formwork needs to be dismantled and erected on site. The demand for formwork is large, the formwork removal takes a long time, the turnover efficiency is low, and the construction period is long;

[0005] (2) The poured pier body concrete is ordinary concrete, which has relatively weak tensile performance and durability, and cracks in the pier body often occur when the design life is not reached , corrosion and other diseases, the later maintenance cost is high;

[0006](3) All processes of cast-in-place piers are operated on-site, and the quality of components is restricted by factors such as workers’ technical level, weather conditions, and surrounding environment, and standardized production cannot be realized. Production Low efficiency, large site pollution, no energy saving and environmental protection

[0008](1) The fully prefabricated pier columns, cap beams, caps and other components are not integrally poured, and the connection nodes are poured on site, the connection quality is difficult to guarantee, and the structural integrity is relatively poor , not suitable for use in high intensity areas;

[0009](2) The whole pier was prefabricated in the factory and then transported to the site. The pier is heavy, the transportation cost is high, and the on-site hoisting is difficult;

[0010](3) The size and length of the overall prefabricated pier columns are fixed, often require custom design, poor assembly flexibility, and low versatility

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