Prefabricated column-column connecting structure

Abstract

The utility model discloses a prefabricated assembly type column-column connecting structure which is characterized in that a plurality of upper column longitudinal bars are arranged in a prefabricated upper column in a penetrating mode, the two ends of each upper column longitudinal bar extend out of the prefabricated upper column, upper key grooves are formed in the middle positions of the upper end face and the lower end face of the prefabricated upper column, and a plurality of lower column longitudinal bars are arranged in a prefabricated lower column in a penetrating mode; the two ends of the lower column longitudinal bars extend out of the prefabricated upper column, lower key grooves are formed in the middles of the upper end face and the lower end face of the prefabricated lower column, supporting columns are arranged between the upper key grooves in the bottom of the prefabricated upper column and the lower key grooves in the top of the prefabricated lower column, and gaps are reserved between the upper column longitudinal bars and the lower column longitudinal bars at the corresponding positions. And concrete is poured between the prefabricated upper column and the prefabricated lower column. The prefabricated upper column is hoisted, then the prefabricated and fixed shear key I-steel is inserted into the lower key groove of the prefabricated lower column to be fixed, the ultra-high-performance concrete is poured after the perpendicularity is adjusted, the ultra-high-performance concrete can be generally and completely solidified within one day, the strength is high, and the production efficiency is also improved.

Description

Technical Field

[0001] The utility model relates to the technical field of assembled buildings, in particular to a prefabricated assembled column-to-column connection structure. Background Art

[0002] With the development of technology, the construction industry has gradually transitioned from on-site construction to prefabricated assembly. Prefabricated parts are produced in factories and assembled on-site, which greatly improves construction efficiency and speeds up construction progress. Prefabricated node connection methods are divided into wet connection and dry connection, but both have certain shortcomings. Wet connection not only has a long construction period, low construction efficiency, and difficult to ensure construction quality, but also increases the construction cost of prefabricated buildings. The most important thing is that it violates the original intention of prefabricated buildings. Dry connection also has the defects of complex connection structure, low construction efficiency, and poor stress performance.

[0003] In the prior art, CN219033791U discloses a prefabricated assembled column-column connection structure, including: a prefabricated upper column, a prefabricated lower column, an upper docking column section, a lower docking column section and a connection structure; the lower end of the prefabricated upper column is fixedly connected to the upper docking column section, and the upper end of the prefabricated lower column is fixedly connected to the lower docking column section; the connection structure includes: two first channel steels and two second channel steels; the two first channel steels are arranged oppositely and the back faces are opposite; the two second channel steels are arranged oppositely and the back faces are opposite, and the two second channel steels are arranged at intervals and located between the two first channel steels; the two ends of the second channel steel are in contact with the back faces of the two first channel steels; the upper docking column section and the lower docking column section are both located in the space surrounded by the two first channel steels and the two second channel steels. The connection structure of the utility model is simple in structure, convenient for instant assembly and disassembly at the construction site, and effectively improves the construction efficiency of assembled concrete structures. At the same time, the force performance of the column-column connection node is improved. It combines the advantages of wet connection and dry connection, but the structure is still too complicated and inconvenient for on-site construction. For this reason, we propose a prefabricated assembled column-to-column connection structure with simple structure and convenient construction. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide a prefabricated assembled column-to-column connection structure. The lower end of the prefabricated upper column is prefabricated with a shear key I-beam. When the columns are connected, the prefabricated upper column is hoisted, and then the shear key I-beam is inserted into the keyway of the prefabricated lower column for fixation. The connection area is made of concrete cast on site, which can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a prefabricated assembled column-to-column connection structure, comprising a prefabricated upper column, a prefabricated lower column and a supporting column, wherein a plurality of upper column longitudinal reinforcements are arranged through the prefabricated upper column, and both ends of the upper column longitudinal reinforcements extend out of the prefabricated upper column, and upper key grooves are arranged at the middle positions of the upper end face and the lower end face of the prefabricated upper column, a plurality of lower column longitudinal reinforcements are arranged through the prefabricated lower column, and both ends of the lower column longitudinal reinforcements extend out of the prefabricated upper column, and lower key grooves are arranged at the middle positions of the upper end face and the lower end face of the prefabricated lower column, a supporting column is arranged between the upper key groove at the bottom of the prefabricated upper column and the lower key groove at the top of the prefabricated lower column, a gap is left between the upper column longitudinal reinforcement and the lower column longitudinal reinforcement at corresponding positions, and concrete is poured between the prefabricated upper column and the prefabricated lower column.

[0006] Furthermore, the support column is a shear key I-beam.

[0007] Furthermore, the upper keyway and the lower keyway are both trapezoidal structures, which facilitates the insertion of the support column.

[0008] Furthermore, upper spiral stirrups and lower spiral stirrups are respectively arranged inside the prefabricated upper column and the prefabricated lower column. The upper spiral stirrups surround the periphery of multiple upper column longitudinal reinforcements, and the lower spiral stirrups surround the periphery of multiple lower column longitudinal reinforcements, thereby enhancing the structural strength of the prefabricated upper column and the prefabricated lower column.

[0009] Furthermore, concrete is poured between the prefabricated upper column and the prefabricated lower column, and a plurality of transverse reinforcing ribs are inserted in the middle to increase the connection strength.

[0010] Furthermore, the prefabricated upper column and the supporting column are prefabricated in advance into one piece.

[0011] Furthermore, after the prefabricated upper column, prefabricated lower column and supporting column are installed accordingly, a plurality of inclined support rods are installed around the prefabricated upper column to keep the supporting column vertical, and the inclined support rods are removed after the pouring is completed.

[0012] Compared with the prior art, the beneficial effects of the present invention are: the prefabricated assembled column-to-column connection structure has the following advantages:

[0013] Lift the prefabricated upper column, insert the prefabricated fixed shear key I-beam into the lower keyway of the prefabricated lower column, adjust the verticality and pour the ultra-high performance concrete. The ultra-high performance concrete can generally be completely solidified in one day, has high strength, and also improves production efficiency. The whole process is simple to construct.

[0014] The upper column longitudinal reinforcement and the lower column longitudinal reinforcement are overlapped, not pasted together, so that the concrete can fully wrap the steel bars without any gaps, ensuring that the poured column is strong and durable without cracking. After connection, all indicators meet national standards. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the prefabricated upper column of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the prefabricated lower column of the utility model;

[0018] Figure 4 Installation diagram of the utility model.

[0019] In the figure: 1 precast upper column, 11 upper keyway, 12 upper column longitudinal reinforcement, 2 precast lower column, 21 lower keyway, 22 lower column longitudinal reinforcement, 3 supporting column. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-4 The present embodiment provides a technical solution: a prefabricated assembled column-column connection structure, comprising a prefabricated upper column 1, a prefabricated lower column 2 and a supporting column 3, wherein a plurality of upper column longitudinal bars 12 are provided through the prefabricated upper column 1, and both ends of the upper column longitudinal bars 12 extend out of the prefabricated upper column 1, and upper key grooves 11 are provided at the middle positions of the upper end surface and the lower end surface of the prefabricated upper column 1, a plurality of lower column longitudinal bars 22 are provided through the prefabricated lower column 2, and both ends of the lower column longitudinal bars 22 extend out of the prefabricated upper column 1, and lower key grooves 21 are provided at the middle positions of the upper end surface and the lower end surface of the prefabricated lower column 2, and a supporting column 3 is provided between the upper key groove 11 at the bottom of the prefabricated upper column 1 and the lower key groove 21 at the top of the prefabricated lower column 2, and a gap is left between the upper column longitudinal bars 12 and the lower column longitudinal bars 22 at corresponding positions, and the upper column longitudinal bars 12 and the lower column longitudinal bars 22 correspond to each other one by one, and concrete is poured between the prefabricated upper column 1 and the prefabricated lower column 2, and ultra-high performance concrete (UHPC) is selected to improve construction efficiency.

[0022] Among them, the supporting column 3 is a shear key I-beam, and the upper key groove 11 and the lower key groove 21 are both trapezoidal structures, which are convenient for the plugging of the supporting column 3. The prefabricated upper column 1 and the prefabricated lower column 2 are respectively provided with upper spiral hoops and lower spiral hoops. The upper spiral hoops surround the periphery of multiple upper column longitudinal bars 12, and the lower spiral hoops surround the periphery of multiple lower column longitudinal bars 22, thereby enhancing the structural strength of the prefabricated upper column 1 and the prefabricated lower column 2.

[0023] Concrete is poured between the prefabricated upper column 1 and the prefabricated lower column 2, and multiple transverse reinforcing ribs are inserted in the middle to increase the connection strength. The prefabricated upper column 1 and the support column 3 are prefabricated in advance. After the prefabricated upper column 1, the prefabricated lower column 2 and the support column 3 are installed accordingly, multiple oblique support rods are installed around the prefabricated upper column 1 to keep the support column 3 vertical. After the pouring is completed, the oblique support rods are removed.

[0024] The working principle of a prefabricated assembled column-to-column connection structure provided by the utility model is as follows: the prefabricated upper column 1 is hoisted up, and then the prefabricated and fixed shear key I-beam is inserted into the lower key groove 21 of the prefabricated lower column 2 for fixing, and after the verticality is adjusted, ultra-high performance concrete can be poured. The ultra-high performance concrete can generally be completely solidified within one day, has high strength, and also improves production efficiency.

[0025] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A prefabricated column-to-column connection structure, characterized in that: The invention comprises a prefabricated upper column (1), a prefabricated lower column (2) and a supporting column (3), wherein a plurality of upper column longitudinal bars (12) are arranged through the prefabricated upper column (1), and both ends of the upper column longitudinal bars (12) extend out of the prefabricated upper column (1), and an upper key groove (11) is arranged at the middle position of the upper end surface and the lower end surface of the prefabricated upper column (1), and a plurality of lower column longitudinal bars (22) are arranged through the prefabricated lower column (2), and both ends of the lower column longitudinal bars (22) extend out of the prefabricated upper column (1). A prefabricated upper column (1) is extended, and a lower key groove (21) is provided at the middle position of the upper end surface and the lower end surface of the prefabricated lower column (2). A support column (3) is provided between the upper key groove (11) at the bottom of the prefabricated upper column (1) and the lower key groove (21) at the top of the prefabricated lower column (2). A gap is left between the upper column longitudinal reinforcement (12) and the lower column longitudinal reinforcement (22) at corresponding positions, and concrete is poured between the prefabricated upper column (1) and the prefabricated lower column (2).

2. A prefabricated column-to-column connection structure according to claim 1, characterized in that: The support column (3) is a shear key I-beam.

3. A prefabricated column-to-column connection structure according to claim 2, characterized in that: The upper key groove (11) and the lower key groove (21) are both trapezoidal structures.

4. The prefabricated column-to-column connection structure according to claim 1, characterized in that: The prefabricated upper column (1) and the prefabricated lower column (2) are respectively provided with upper spiral stirrups and lower spiral stirrups, wherein the upper spiral stirrups surround the periphery of a plurality of upper column longitudinal reinforcements (12), and the lower spiral stirrups surround the periphery of a plurality of lower column longitudinal reinforcements (22).

5. The prefabricated column-to-column connection structure according to claim 1, characterized in that: Concrete is poured between the prefabricated upper column (1) and the prefabricated lower column (2), and a plurality of transverse reinforcing ribs are inserted in between.

6. The prefabricated column-to-column connection structure according to claim 1, characterized in that: The prefabricated upper column (1) and the supporting column (3) are prefabricated in advance into one piece.

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