Double-combination-sleeve connection structure and construction method for lattice beam connection

Abstract

The invention discloses a double-combination-sleeve connection structure and a construction method for lattice beam connection. The double-combination-sleeve connection structure comprises a first combination sleeve and a second combination sleeve which are oppositely arranged, the first combination sleeve and the second combination sleeve are connected through a connecting rod and are the same instructure, and each of the first combination sleeve and the second combination sleeve comprises a main sleeve, an auxiliary sleeve, a radial adjusting sleeve and an axial adjusting sleeve. The construction method comprises the steps that first, the model of the double-combination-sleeve connection structure is selected; second, the exposed ends of a set of pre-buried steel bars are connected; third, the exposed ends of another set of pre-buried steel bars are connected; fourth, a sealing layer is filled; and fifth, a concrete fixing layer is poured. According to the double-combination-sleeveconnection structure, the spacing between the exposed ends of every two pre-buried steel bars can be roughly adjusted, the spacing between the exposed ends of every two pre-buried steel bars can be finely adjusted, the application range is wide, construction is easy and convenient, the construction efficiency is high, and the construction period is shortened.

Description

technical field [0001] The invention belongs to the technical field of prefabricated building construction, and in particular relates to a double-combined sleeve connection structure and a construction method for lattice beam connection. Background technique [0002] In prefabricated structures, as the requirements for green construction become higher and higher, the use of straight threaded sleeves to connect pre-embedded steel bars is becoming more and more widely used. However, in the actual construction process, straight threaded sleeves are used to embed The following defects still exist in the steel bar connection: 1. When using a straight threaded sleeve to connect the pre-embedded steel bars, due to construction errors, the centerlines of the two reserved steel bars that need to be connected are prone to misalignment, resulting in two pre-embedded steel bars that need to be connected. The remaining steel bars cannot be connected; 2. When the exposed ends of the two r...

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Problems solved by technology

[0002] In prefabricated structures, as the requirements for green construction become higher and higher, the use of straight threaded sleeves to connect pre-embedded steel bars is becoming more and more widely used. However, in the actual construction process, straight threaded sleeves are used to embed The following defects still exist in the steel bar connection: 1. When using a straight threaded sleeve to connect the pre-embedded steel bars, due to construction errors, the centerlines of the two reserved steel bars that need to be connected are prone to misalignment, resulting in two pre-embedded steel bars that need to be connected. The remaining steel bars cannot be connected; 2. When the exposed ends of the two reserved steel bars that need to be connected are processed with external threads, the strength of the exposed ends of the reserved steel bars is weakened, resulting in unqualified connection quality of the reserved steel bars; in order to solve the above defects, a There is a way to connect the pre-embedded steel bars with a combined sleeve. However, in the actual use process, when the following situations occur, the combined sleeve still cannot be used normally or the adjustment range cannot meet the requirements. For example, in the first case The two reserved steel bars that need to be connected are located on different straight lines; the second case is that the distance between the ends of the two reserved steel bars that need to be connected is too large; the third case is that the two reserved steel bars that need to be connected Therefore, in order to broaden the application range of the combined sleeve, a construction method for the connection structure of the double combined sleeve and the connection of the lattice beam should be provided

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