Self-supporting prefabricated column hybrid connection and construction method thereof

A hybrid connection and construction method technology, applied in the direction of columns, pier columns, pillars, etc., can solve the problems that the design method is not mature enough, and it is difficult to further take advantage of the speed advantage of prefabricated buildings, so as to achieve convenient engineering design and application, high construction efficiency, Reduce the effect of using

Active Publication Date: 2020-06-05
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the precast column adopts "wet connection", it is necessary to fix the upper and lower precast columns through lateral support first, and then pour the mortar at the connection part. It takes 2-28 days of curing time and the subsequent construction can only be carried out after the mortar reaches a certain strength. The construction progress is delayed, and it is difficult to further take advantage of the speed advantage of prefabricated buildings
[0004] "Dry connection" usually adopts mechanical connection methods such as bolt connection, which usually does not require lateral support, and the construction speed is extremely fast, but its connection performance has its own characteristics, and the corresponding design method is not mature enough

Method used

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  • Self-supporting prefabricated column hybrid connection and construction method thereof
  • Self-supporting prefabricated column hybrid connection and construction method thereof
  • Self-supporting prefabricated column hybrid connection and construction method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] like Figures 1 to 2 , the four bolt connectors 11 are respectively at the corners of the upper prefabricated column 1, the four sleeves 12 are respectively at the middle position of the side of the upper prefabricated column 1, the bolt connectors 11, the sleeve 12 and the lower end surface of the upper prefabricated column 1 on the same plane. The upper prefabricated column 1 also has a first longitudinal steel bar 13 and a second longitudinal steel bar 14. The first longitudinal steel bar 13 is connected with the bolt connector 11 through an internal thread, and the second longitudinal steel bar 14 is connected with the sleeve 12 through an internal thread. There are third longitudinal reinforcement bars 21 and fourth longitudinal reinforcement bars 22 in the lower prefabricated column 2 .

[0030] like image 3 , the top center of the bolt connector 11 has a bolt connector inner threaded hole 111, and the bottom center has a bolt connector bottom plate hole 112. ...

Embodiment 2

[0040] like Figure 5 , the four bolt connectors 11 are respectively at the corners of the upper prefabricated column 1, the four sleeves 12 are respectively in the middle of the side surface of the upper prefabricated column 1, the bolt connectors 11, the sleeve 12 and the lower end surface of the upper prefabricated column 1 on the same plane. The upper prefabricated column 1 also has a first longitudinal steel bar 13 and a second longitudinal steel bar 14. The first longitudinal steel bar 13 is fixedly connected with the bolt connector 11 through nuts, and the second longitudinal steel bar 14 is connected with the sleeve 12 through internal threads. There are third longitudinal reinforcement bars 21 and fourth longitudinal reinforcement bars 22 in the lower prefabricated column 2 .

Embodiment 3

[0042] like Image 6 , the four bolt connectors 11 are respectively at the corners of the upper prefabricated column 1, the four sleeves 12 are respectively in the middle of the side surface of the upper prefabricated column 1, the bolt connectors 11, the sleeve 12 and the lower end surface of the upper prefabricated column 1 on the same plane. The upper prefabricated column 1 also has a first longitudinal steel bar 13 and a second longitudinal steel bar 14. The first longitudinal steel bar 13 and the bolt connector 11 are connected by internal threads, and the second longitudinal steel bar 14 and the sleeve 12 are filled with high-strength grouting material. connect. There are third longitudinal reinforcement bars 21 and fourth longitudinal reinforcement bars 22 in the lower prefabricated column 2 .

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Abstract

The invention discloses a self-supporting prefabricated column hybrid connection and a construction method thereof. The hybrid connection comprises an upper prefabricated column and a lower prefabricated column, wherein screw bolt connecting elements and sleeves are arranged at the bottom of the upper prefabricated column; a first longitudinal steel bar and a second longitudinal steel bar are arranged in the upper prefabricated column; a third longitudinal steel bar and a fourth longitudinal steel bar are arranged in the lower prefabricated column; the screw bolt connecting elements are respectively connected with the first longitudinal steel bar and the third longitudinal steel bar; the sleeves are respectively connected with the second longitudinal steel bar and the fourth longitudinal steel bar; and an enclosure region is formed between the lower prefabricated column and the sleeves through post pouring. The method comprises the following steps of fastening the first longitudinal steel bar and the screw bolt connecting element; fastening the end part of the second longitudinal steel bar and the sleeve; pre-burying the screw bolt connecting elements, the sleeves, the first longitudinal steel bar and the second longitudinal steel bar; fastening the third longitudinal steel bar and the screw bolt connecting element; extending the fourth longitudinal steel bar into the sleeve; pouring grouting materials into the sleeves; and forming the enclosure region through post pouring. After the connection is completed, a load can be borne immediately; lateral support is not needed; the construction efficiency is high; and the construction cost is favorably reduced.

Description

technical field [0001] The invention relates to the connection of prefabricated reinforced concrete components, in particular to a hybrid connection of self-supporting prefabricated columns and a construction method thereof. Background technique [0002] With the transformation and upgrading of the construction industry, prefabricated buildings have attracted more and more attention from the engineering community. As an industrialized structural form, prefabricated concrete frame structure is widely used in various residential, office buildings and other buildings. For prefabricated concrete frame structures, the connection performance and construction efficiency of prefabricated columns play a crucial role in the performance and construction time of prefabricated concrete frame structures. [0003] In terms of construction method, the connection between prefabricated columns can be divided into "wet connection" and "dry connection". Among them, "wet connection" usually us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04C3/34E04B1/58E04G21/00
CPCE04C3/34E04B1/58E04G21/00
Inventor 王春林卿缘冯德成孙建
Owner SOUTHEAST UNIV
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