Assembly type reinforced concrete prefabricated column connecting structure

Abstract

A fabricated reinforced concrete prefabricated column connecting structure comprises a lower prefabricated column and an upper prefabricated column, longitudinal load-bearing steel bars are arranged in the upper prefabricated column and the lower prefabricated column, a connecting column head protrudes out of one end of the upper prefabricated column, a plurality of screw holes are formed in the end face of the connecting column head, and leveling screw rods are in threaded fit with the screw holes; the upper prefabricated column is provided with a protruding connecting column head, the connecting column head is aligned to the lower prefabricated column face to face, the load of the upper prefabricated column is transmitted to the column top of the lower prefabricated column through the leveling screw rod, the leveling screw rod is rotated to level the upper prefabricated column, and stirrups are bound to the peripheries of longitudinal load-bearing steel bars of the upper prefabricated column and the lower prefabricated column. The number of the screws on the upper portion is large enough to support the vertical load of the upper prefabricated column, the column top of the lower prefabricated column is scabbled, the upper prefabricated column is leveled by adjusting the leveling screws after the upper prefabricated column is hoisted in place, a cast-in-place section is poured secondarily after the upper prefabricated column is supported by the supporting legs to be stable, and accurate centering and leveling of the upper prefabricated column and the lower prefabricated column can be achieved.

Description

Technical Field

[0001] The utility model relates to the field of prefabricated frame column construction, in particular to an assembled reinforced concrete prefabricated column connection structure. Background Art

[0002] Prefabricated concrete structure is a concrete structure that is assembled / connected with prefabricated components as the main load-bearing components. It is one of the important directions of development of building structures in my country. It is conducive to the development of my country's building industrialization, improving production efficiency and saving energy, developing green and environmentally friendly buildings, and is conducive to improving and ensuring the quality of construction projects.

[0003] At the same time, compared with cast-in-place construction methods, prefabricated structures are conducive to green construction, because prefabricated construction can better meet the requirements of green construction such as land saving, energy saving, material saving, water saving and environmental protection, and reduce the negative impact on the environment, including reducing noise, preventing dust, reducing environmental pollution, clean transportation, reducing site interference, and saving water, electricity, materials and other resources and energy.

[0004] The connection and construction method of prefabricated frame structure columns is one of the key issues in prefabricated reinforced concrete structure technology. However, the longitudinal connecting steel bars reserved in the prefabricated columns are often bent and deformed during transportation, which makes it difficult to accurately align them with the extrusion sleeve during installation. The construction is difficult, and the engineering accuracy and quality are difficult to guarantee. At the same time, the current connection method is difficult to achieve complete equality with the cast-in-place overall structure, which affects the seismic performance of the structure and limits the use of prefabricated frame structures in high-intensity areas. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the defects of the prior art in that the leveling and alignment are not accurate and the node connection is difficult to be equal to the cast-in-place integral structure, and to provide an assembled reinforced concrete prefabricated column connection structure.

[0006] The utility model adopts a technical solution to solve its technical problem, which is an assembled reinforced concrete prefabricated column connection structure, comprising a lower prefabricated column and an upper prefabricated column, wherein the upper prefabricated column and the lower prefabricated column are provided with longitudinal force-bearing steel bars, one end of the upper prefabricated column is protruded with a connecting column head, the end face of the connecting column head is provided with a plurality of screw holes, and the threads on the screw holes are matched with leveling screws; the connecting column head is face-to-face with the lower prefabricated column, and the load of the upper prefabricated column is transmitted to the column top of the lower prefabricated column through the leveling screw, and the leveling screw is rotated to level the upper prefabricated column, and stirrups are bound around the longitudinal force-bearing steel bars of the upper prefabricated column and the lower prefabricated column.

[0007] Furthermore, the top of the lower prefabricated column and the protruding connecting column head of the upper prefabricated column are both roughened.

[0008] Furthermore, the upper precast column is leveled and supported by legs and then poured with concrete (micro-expansion high damping concrete) for a second time.

[0009] The utility model has the following beneficial technical effects:

[0010] In the utility model, the upper prefabricated column has a protruding connecting column head, and the end of the connecting column head has a plurality of evenly distributed screw holes, the diameter of the screw holes corresponds to the leveling screw, and the number of screws is sufficient to support the vertical load of the upper prefabricated column. The top of the lower prefabricated column is roughened, and the upper prefabricated column is hoisted into place to support the lower prefabricated column by adjusting the leveling screw, and the upper prefabricated column is leveled. After the upper prefabricated column is supported by the legs to stabilize, the formwork is supported, and the cast-in-place section is cast for the second time, which can achieve the effect of accurate centering and leveling of the upper prefabricated column and the lower prefabricated column. At the same time, the micro-expansion high-damping concrete poured for the second time can improve the ductility and energy dissipation capacity of the connection, ensure the overall performance of the connected structure, and is conducive to the application and promotion of prefabricated frame structures in high-intensity areas. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of an embodiment of an assembled reinforced concrete prefabricated column connection structure of the utility model;

[0012] Figure 2 It is a schematic diagram of the connection column head of an upper prefabricated column of an assembled reinforced concrete prefabricated column connection structure embodiment of the utility model.

[0013] Description of reference numerals:

[0014] 1. Pouring concrete; 2. Lower precast column; 3. Upper precast column; 4. Connecting column head; 5. Screw hole; 6. Leveling screw; 7. Upper longitudinal stress-bearing steel bar; 8. Lower longitudinal stress-bearing steel bar; 9. Stirrups. DETAILED DESCRIPTION

[0015] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0016] Reference Figure 1 and Figure 2The present embodiment comprises cast-in-place concrete 1, a lower prefabricated column 2 (or a prefabricated foundation short column), and an upper prefabricated column 3. The upper prefabricated column 3 and the lower prefabricated column 2 are both provided with longitudinal stress-bearing steel bars, wherein the upper prefabricated column 3 is provided with an upper longitudinal stress-bearing steel bar 7, and the lower prefabricated column 2 is provided with a lower longitudinal stress-bearing steel bar 8. A connecting column head 4 is protruded from one end of the upper prefabricated column 3, and a plurality of evenly distributed screw holes 5 are provided on the end surface of the connecting column head 4, and a leveling screw 6 is threadedly matched on the screw hole 5. The connecting column head 4 is face-to-face aligned with the top of the lower precast column 2, and the top of the lower precast column 2 and the surface of the connecting column head 4 are roughened, so that the vertical load of the upper precast column 3 is transmitted to the top of the lower precast column 2 through the leveling screw 6, and the leveling screw 6 is rotated to the screw-in length to level the upper precast column 3. After the upper precast column 3 and the lower precast column 2 are leveled, the upper longitudinal stress-bearing steel bars 7 of the upper precast column and the lower longitudinal stress-bearing steel bars 8 of the lower precast column are tied and overlapped by stirrups 9.

[0017] During leveling, the deadweight load of the upper precast column 3 is transferred to the top of the lower precast column 2 through the leveling screw 6.

[0018] After leveling the upper precast column 3, fix it with outriggers, and perform necessary formwork before pouring the secondary concrete (micro-expansion type high damping concrete) 1. After the secondary poured concrete 1 (micro-expansion type high damping concrete) reaches the designed strength, remove the formwork and the outriggers.

[0019] In this embodiment, the screw hole 5 connecting the column head 4 on the upper prefabricated column 3 can be made of steel or other rigid materials, and has a thread inside to facilitate the screwing in and out of the leveling screw 6 to transfer the vertical load.

[0020] The above are all preferred embodiments of the present utility model, and the protection scope of the present utility model is not limited thereto. Among them, the same parts are represented by the same figure marks. It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to the directions in the drawings, and the words "inside" and "outside" refer to the directions toward or away from the geometric center of a specific component, respectively. Therefore: All equivalent changes made according to the structure, shape, and principle of the present utility model should be covered within the protection scope of the present utility model.

Claims

1. An assembled reinforced concrete prefabricated column connection structure, characterized in that: The invention comprises a lower prefabricated column (2) and an upper prefabricated column (3), wherein the upper prefabricated column (3) has an upper longitudinal stress-bearing steel bar (7), and the lower prefabricated column (2) has a lower longitudinal stress-bearing steel bar (8). A connecting column head (4) protrudes from one end of the upper prefabricated column (3), and a plurality of screw holes (5) are arranged on the end surface of the connecting column head (4). The screw holes (5) are threadedly matched with leveling screw rods (6); the connecting column head (4) is face-to-face aligned with the lower prefabricated column (2), and the load of the upper prefabricated column (3) is transmitted to the top of the lower prefabricated column (2) via the leveling screw rod (6). The upper prefabricated column (3) is leveled by rotating the leveling screw rod (6), and stirrups (9) are bound around the upper longitudinal stress-bearing steel bar (7) and the lower longitudinal stress-bearing steel bar (8).

2. The prefabricated reinforced concrete column connection structure according to claim 1, characterized in that: The top of the lower prefabricated column (2) and the protruding connecting column head (4) of the upper prefabricated column (3) are both roughened.

3. The assembled reinforced concrete prefabricated column connection structure according to claim 1 is characterized in that: The deadweight load of the upper prefabricated column (3) is transferred to the top of the lower prefabricated column (2) through the leveling screw (6).

4. The assembled reinforced concrete prefabricated column connection structure according to claim 1, characterized in that: The upper prefabricated column (3) is precisely leveled by adjusting the leveling screw (6).

5. The assembled reinforced concrete prefabricated column connection structure according to claim 1, characterized in that: After the upper prefabricated column (3) is leveled, it is supported by legs and poured with concrete for the second time.

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