A kind of assembly structure of prefabricated concrete components

Abstract

The invention provides an assembly structure of a prefabricated concrete member; the sleeve includes a non-grouting connection section and a grouting connection section, the steel skeleton includes inner barbs and outer barbs, and the diameter of the channel surrounded by a plurality of inner barbs is smaller than that of the second waiting barb. The diameter of the connecting steel bar, the diameter of the outline surrounded by the outer barbs is greater than the diameter of the inner cavity of the grouting connection section. The alignment device includes a lower support and an upper support; both the upper support and the lower support are electromagnets; the upper support and the lower support are opposite to the magnetic poles and connected in series on the same circuit. Each part of the grouting sleeve is processed separately, reassembled, and mass-produced, which is easy to control the quality of each part; the connection between the grouting sleeve and the transition section of the steel pipe is mechanically operated in the factory, which is easy to control the quality of the threaded connection, and the self-locking steel frame is adopted to realize The purpose of pulling out is to improve the shock resistance. Through the principle of magnetic levitation, the steel bars of the upper and lower concrete members can be quickly and accurately aligned, saving time and effort. Through the circuit connected in series, the same magnetic force of multiple sets of supporting mechanisms can be realized to ensure stable supporting.

Description

Technical field [0001] The invention belongs to the field of prefabricated building construction, in particular to an assembling structure of prefabricated concrete components. Background technique [0002] From the perspective of the global environment, it is imperative for the construction industry to develop prefabricated construction methods. The continuous advancement of prefabricated concrete construction technology has provided a technical foundation for improving the performance of prefabricated structures and realizing the housing industry. The prefabricated concrete structure refers to the concrete structure assembled by the reliable connection method of precast concrete components, and then the prefabricated concrete structure is formed into a whole with the on-site post-pouring concrete and cement-based grouting material, which is the assembled monolithic concrete structure. And the difficulty is the quality of the steel connection, that is, the existing technology an...

AI Technical Summary

Problems solved by technology

The prefabricated concrete structure refers to the concrete structure assembled by prefabricated concrete components through a reliable connection method, and then the prefabricated concrete structure is integrated with the post-cast concrete and cement-based grouting materials on site to form an integrated concrete structure. Its core And the difficulty is the quality of the steel bar connection, that is, the existing technology and process are difficult to guarantee the coaxial butt joint of the steel bars to be connected. At present, non-shrinkage or micro-expansion cement-based grouting materials are usually poured into the semi-grouting or full-grouting sleeves to realize prefabricated components. The connection between them, but the existing construction technology is difficult to ensure that the sleeve is filled with grouting material, and it is difficult to ensure that the grouting is dense, and there is no effective technical means to detect the grouting density in the specific engineering construction. Therefore, the prefabricated building The development and use in areas with high seismic fortification requirements are limited. Therefore, in order to realize the universal applicability of prefabricated construction technology, it is necessary to address the above problems and improve the connection structure and construction technology in a targeted manner.

[0003] Due to the large geometric size of the full-grouting sleeve, the grouting workload is large, the construction is difficult, and the reinforcement area around the connection node is large. At present, half-grouting sleeves are commonly used in engineering, and the widely used half-grouting sleeves are cast iron. One end of the sleeve is directly connected to the steel bar bolt, and the other end is directly connected by grouting. Therefore, at the construction site, the ribs on the steel bar must be stripped clean, and one end of the steel bar is cold-rolled into wire, and then threaded with the half-grouting sleeve. The disadvantages of the connection method are: 1) the on-site thread processing process is complicated, and the quality standard is difficult to control; 2) when the thread connection is carried out on the construction site, a torque wrench must be used, which is difficult to operate; 3) the steel bar inserted into the grouting sleeve The length and threaded connection quality control must meet the requirements of national standards and regulations, and it is extremely difficult to achieve a high pass rate; 4) In the currently disclosed technology, the semi-grouted connection structure mainly adds ribs from the non-grouted connection section and the side wall of the grouted sleeve. To improve the strength of the connection part of the fabricated concrete member, so that the wall of the sleeve is thicker and the self-heavy

In the prior art, it is generally adjusted manually by tapping with a wrench or bending with pliers. The adjustment process is noisy and the precision is low.

Images