A magnetic levitation connection positioning method for prefabricated concrete components

Abstract

The invention provides a magnetic suspension connecting positioning method for reinforcements of fabricated concrete components. The magnetic suspension connecting positioning method comprises the following steps that (1) the upper concrete component is hoisted to the set position firstly; (2) the lower concrete component and the upper concrete component are each provided with at least two first marks and second marks; (3) lower brackets and upper brackets are arranged on the first marks and the second marks correspondingly, and the lower brackets and the upper brackets are both electromagnets, are opposite in a homopolar mode, and are connected to the same circuit in series; (4) the circuit is controlled by a control mechanism to be powered on, under the effect of magnetic force, the upper brackets and the lower brackets are centered, and thus positing of the upper concrete component and the lower concrete component is completed; (5) the magnitude of a current is controlled through the control mechanism to enable the upper concrete component to fall onto a cushion block; and (6) the upper brackets and the lower brackets are pulled out. According to the magnetic suspension connecting positioning method, through the series circuit, it can be ensured that the magnetic force of a plurality of bearing mechanisms is the same, the stable bearing is ensured, through the magnetic suspension principle, the reinforcements of the upper and lower concrete components are quickly and accurately centered, and the time and labor are saved.

Description

technical field [0001] The invention belongs to the field of prefabricated buildings, and in particular relates to a magnetic levitation connection positioning method for prefabricated concrete components. Background technique [0002] The biggest feature of prefabricated buildings is green construction, energy saving and environmental protection. The prefabricated concrete components used are assembled and connected at the construction site, which can avoid or reduce the impact of construction on the surrounding environment. The high degree of mechanization can greatly shorten the construction period and reduce construction costs. On-site labor resource input. From the perspective of the global environment, it is imperative for the construction industry to develop into a prefabricated construction method. [0003] The prefabricated concrete structure refers to the concrete structure assembled by prefabricated concrete components through reliable connection, and then the pr...

AI Technical Summary

Problems solved by technology

The core and difficult point of the connection of prefabricated concrete members is the quality of the connection of the steel bars in the upper and lower concrete members. The existing technology and process are difficult to ensure that the non-grouting connecting steel bars and the grouting connecting steel bars are coaxially connected in the grouting sleeve.

According to statistics, in actual engineering, the accurate centering connection rate between the sleeve and the grouted connecting steel bar is about 20%. The main reasons are as follows: 1) It is difficult to insert the grouted connecting steel bar at the end of the same component into the corresponding sleeve, which makes the installation of the component difficult ;2) When the steel bar of the grouting connection section is inserted into the grouting sleeve, it is close to the inner wall of the sleeve. During subsequent grouting, the grout cannot completely wrap the steel bar of the grouting connection section, so that the connection strength of the sleeve is greatly reduced, and the connection part of the component is seriously weakened. load transfer

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