Large-diameter and super-long reinforcement cage and construction method thereof

Abstract

The invention discloses a large-diameter and super-long reinforcement cage and a construction method thereof. The reinforcement cage comprises a plurality of reinforcement cage units; each reinforcement cage unit comprises a plurality of spaced and parallel reinforcing ribs; a plurality of main ribs are equidistantly arranged in the circumferential direction of the reinforcing ribs; the main ribsand the reinforcing ribs are welded together; a screw is arranged at each of two ends of each main rib respectively; adjacent two reinforcement cage units are connected as a whole through the main ribs and sleeves in threaded connection with the main ribs; stirrups are also arranged in the circumferential direction of the joint between adjacent two reinforcement cage units. The construction methodcomprises the following steps: building of a rebar processing table, processing of the main ribs, making and mounting of the reinforcement cage units, hoisting of the reinforcement cage, lengtheningof the orifice and the like. According to the large-diameter and super-long reinforcement cage disclosed by the invention, the sleeve connection operation is convenient, hoisting and sinking can be performed after the reinforcement cage is tested qualified, the technical requirement of lengthening the orifice of the reinforcement cage as well as the requirements in construction period and qualitycan be met, and the value in promotion and application is relatively high.

Description

technical field [0001] The invention belongs to the technical field of concrete construction, and in particular relates to a large-diameter super-long reinforcement cage and a construction method thereof. Background technique [0002] With the continuous increase of high-rise and ultra-high-rise buildings, the use of large-diameter super-long cast-in-place piles is becoming more and more extensive. The pile length and pile diameter of cast-in-situ piles are constantly increasing, and its unique advantages compared with prefabricated piles are gradually emerging, especially in super high-rise, bridge, high-speed rail and railway projects, the pile length has exceeded 150m, and the pile diameter Reach more than 4m. [0003] The "Code for Design of Concrete Structures" GB 50010-2010 stipulates that when the diameter of tension reinforcement d>25mm and the diameter of compression reinforcement d>28mm, it is not suitable to use lap joints. Ordinary reinforcement cages are...

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Problems solved by technology

However, the large-diameter steel bar needs to be welded with groove butt. It can be hoisted and sunk only after passing the inspection and meeting the specified tec

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