Processing method of anti-seismic self-locking-type rolling semi-grouting sleeve and processing method of concrete component

Abstract

The invention provides a processing method of an anti-seismic self-locking-type rolling semi-grouting sleeve and a processing method of a concrete component. The processing method of the anti-seismicself-locking-type rolling semi-grouting sleeve comprises the following steps that 1) a seamless steel pipe with proper wall thickness is selected, an appropriate length of the seamless steel pipe is cut to prepare the sleeve, and the sleeve comprises a non-grouting connecting section and a grouting connecting section; and internal threads are formed in the inner wall of the non-grouting connectingsection, a plurality of grooves are formed in the grouting connecting section, and a plurality of convex ribs are rolled on the inner surface of the grouting connecting section; 2) annular reinforcing ribs are installed in the grooves of the side walls of the sleeve; 3) a seamless steel pipe with proper wall thickness is selected, a proper length of the seamless steel pipe is cut to prepare a steel pipe transition section, wherein external threads are formed on one section of the pipe body of the steel pipe transition section, and the other section of the pipe body of the steel pipe transition section is a rolling depression section; and 4) a plurality of longitudinal guiding rebars, a plurality of annular fixing steel rings and inclined steel branches are welded into a self-locking steelskeleton. Each part of the grouting sleeve is processed and manufactured separately, and the quality of each part is easy to control. The connection between the grouting sleeve and the steel pipe transition section is operated by machineries, the quality of threaded connection is easy to control, and the self-locking steel skeleton is adopted to realize pulling-resistance and improve anti- seismic performance.

Description

technical field [0001] The invention belongs to the field of prefabricated building construction, in particular to a method for processing an anti-seismic assembled self-locking rolling semi-grouting sleeve connection structure and a method for processing an assembled concrete component. Background technique [0002] The prefabricated concrete building construction technology is a concrete structure construction technology that prefabricates the prefabricated concrete components in the factory, assembles them at the construction site, and then assembles them through reliable connection methods. 1. The cement-based grouting material forms a whole to form an assembled integral concrete structure. This technology is energy-saving and environmentally friendly, and the components are highly standardized, which can greatly save the construction period. The core and difficulty is the quality of the steel connection. Currently, it is commonly used in semi-grouting or full The grouti...

AI Technical Summary

Problems solved by technology

The above two types of sleeves have their own disadvantages. Among them, the cast iron (steel) sleeve has a bulky appearance and high technical requirements, and the processing quality of the sleeve is difficult to guarantee; the machining sleeve is mainly made of steel rods or thick-walled steel pipes. The material is made by hollowing out the steel bar or milling the inner wall of the thick-walled steel pipe by mechanical milling. Although it is relatively strong, it is still relatively heavy, and the material consumption is large, the production cost is high, and the production efficiency is low.

[0004] Chinese patent document CN104563396A discloses a pier head extruded semi-grouting steel bar sleeve and connecting structure and CN102587586A discloses a new type of cement grouting thread composite steel bar connecting joint. The sleeve part is directly processed by hot-rolled seamless steel pipe or steel pipe. Compared with the milling process of solid steel rods, it has certain advantages, but there are still the following disadvantages: 1) The diameter of the sleeve at the non-grouting connection end is quite different from the diameter of the steel bar to be connected. 2) The grooves and / or convex ribs used for shear resistance inside the sleeve are made by rolling or spinning. In order to meet the requirements of JGJ107 standard I joints, the The wall thickness of the barrel is thicker, resulting in a bulky sleeve profile

[0005] To sum up, the currently disclosed grouting sleeves have disadvantages such as difficult processing, bulky form, high cost, and poor deformation resistance, and the existing technologies and processes are difficult to ensure that the steel bars to be connected can be connected coaxially, and it is difficult to ensure that the inside of the sleeve Grout dense

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