A dynamic control method for steel bar installation quality used in silo slipform construction

Abstract

The invention discloses a rebar mounting quality dynamic control method used for silo slip-form construction. The method includes the following steps: setting up a slip-form system; fixing L-shaped round steel; determining a vertical rebar positioner, and fixing the same on a lifting frame in the shape of a Chinese character 'Kai' meaning opening; making a horizontal rebar positioner, and pre-burying the horizontal rebar positioner in concrete of the wall of a silo; enabling the L-shaped round steel and the vertical rebar positioner to synchronously slide upwards along with the slip-form system; connecting the horizontal rebar positioner insufficient in length; binding an intersection of a vertical rebar and a horizontal rebar stably by using tie wires. Specially-made rebar positioners including an L-shaped rebar protecting layer position, the annular-network type vertical rebar positioner and the crawling-ladder type horizontal rebar positioner are adopted, so that the mounting and positioning problem of the wall of the silo is solved; compared with conventional processes of using concrete cushion blocks to guarantee thickness of a rebar concrete protecting layer and using a manual binding mode to guarantee interval of transverse rebars and vertical rebars, the method has the advantages of accurate rebar positioning, operation simplicity, reliable quality and low cost and has good popularization and application prospect.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a dynamic control method for steel bar installation quality used in silo sliding form construction. Background technique [0002] In the construction field, the slipform construction technology is a special construction technology widely used in the construction of towering cast-in-place concrete structures. Compared with conventional construction methods, this construction technology has the advantages of high degree of mechanization, fast construction speed, less site occupation, strong structural integrity, good seismic performance, safe operation, significant environmental and economic comprehensive benefits, and can save formwork. And the materials needed to build the scaffolding, the formwork can be easily disassembled and assembled flexibly, and can be reused. [0003] Usually, the method of installation of reinforcement works in silo slipform construction i...

AI Technical Summary

Problems solved by technology

Judging from the project implementation results, the following problems generally exist: during the lifting process of the sliding form, due to the friction between the pads of the steel protection layer and the formwork, the pads are loosened or dropped, which affects the quality of the concrete; Concrete pouring and steel bar tying for the raised height must be completed within the stipulated time to ensure continuous slipform construction

In addition, if the reinforcement system is not in place, offset occurs, and it is also easy to cause the sliding formwork device to jam, shift, and the sliding form is not synchronized, resulting in warehouse wall offset or quality accidents

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