Structure suitable for leveling and fixing cast-in-place joint of prefabricated column
By setting up a semispherical rigid prefabricated parts and a steel support kit at the connections of the prefabricated columns, and using the combination of elongated screws, the problems of high support difficulty and low installation accuracy in the construction of prefabricated columns are solved, and self-fixing and leveling are achieved. Improve construction safety and accuracy.
Patent Information
- Application Number
- CN202421271178.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-05
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2034-06-05
AI Technical Summary
In the existing prefabricated column construction technology, the prefabricated columns are heavy and the temporary support of the legs is difficult to support. Especially when there is no reinforced concrete floor slab on the ground, there is no fixed point at the lower end of the legs, which is limited in use, which affects safety; lifting alignment error Large, and longitudinally connected steel bars are difficult to install due to transportation bending deformation, and construction accuracy and quality are difficult to ensure.
A structure suitable for leveling and fixing of cast-in-place nodes of prefabricated columns is designed. By setting a hemispherical rigid prefabricated piece at the bottom of the connecting column head of the upper prefabricated column, and a groove is set on the top of the lower prefabricated column, using an upper steel support kit, A combination of steel support kit and pair elongated screws enables self-fixing and leveling.
This structure can be self-fixed without external support, and the application scenarios are not limited. The upper and lower steel support kits and the elongated screws can be reused, which improves the safety and accuracy of construction and reduces the difficulty of construction.
Smart Images
Figure CN222525557U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of prefabricated frame column construction, in particular to a structure suitable for leveling and fixing cast-in-place nodes of prefabricated columns. Background Art
[0002] Prefabricated buildings are energy-saving and environmentally friendly, and realize green construction. Prefabricated reinforced concrete structures are prefabricated in factories, with controllable quality, energy-saving and environmentally friendly, and high construction efficiency. They have been widely used in the field of engineering construction. The connection and construction method of its frame structure columns is one of the key issues in prefabricated reinforced concrete structure technology. At present, the upper and lower adjacent prefabricated columns of the frame structure of my country's "Technical Standards for Prefabricated Concrete Buildings" adopt temporary support of legs and longitudinal force-bearing steel bar extrusion sleeve connection structure. The prefabricated columns are heavy and temporary support of legs is difficult to stabilize. Especially when there is no reinforced concrete floor on the ground, there is no fixed point at the lower end of the legs, which limits the use and affects safety. In addition, the hoisting alignment error is large. At the same time, the longitudinal connection steel bars reserved for the prefabricated columns are often bent and deformed during transportation, which makes it difficult to accurately align with the extrusion sleeve during installation. The construction is difficult and the engineering accuracy and quality are difficult to guarantee.
[0003] To this end, we design a structure suitable for leveling and fixing the cast-in-place nodes of prefabricated columns. Utility Model Content
[0004] The utility model aims to address the deficiencies of the prior art and provide a structure suitable for leveling and fixing cast-in-place nodes of prefabricated columns, so as to solve the problems raised in the background art.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a structure suitable for leveling and fixing cast-in-place nodes of prefabricated columns, comprising a lower prefabricated column and an upper prefabricated column, the top of the lower prefabricated column is provided with a groove, the front and side surfaces of the lower prefabricated column are penetrated by lower steel support kits, two lower steel support kits are both located below the groove, a protruding connecting column head is reserved at the bottom of the upper prefabricated column, a rigid prefabricated part is buried at the bottom center of the connecting column head, the connecting column head is placed in the groove at the top of the lower prefabricated column, the front and side surfaces of the upper prefabricated column are penetrated by upper steel support kits, four pairs of elongated screws are threadedly connected between the two lower steel support kits and the two upper steel support kits.
[0006] Preferably, the lower steel support kit and the upper steel support kit are both square steel bars of the same shape and size, and screw holes that penetrate up and down and can cooperate with the elongated screw rods are reserved at both ends of the square steel bars.
[0007] Preferably, the rigid prefabricated part is a hemispherical steel prefabricated part.
[0008] Preferably, the pair of elongated screw rods are made of steel screw rods.
[0009] Compared with the prior art, the utility model provides a structure suitable for leveling and fixing cast-in-place nodes of prefabricated columns, which has the following beneficial effects:
[0010] 1. This structure is suitable for leveling and fixing the cast-in-place nodes of prefabricated columns. By arranging a hemispherical rigid prefabricated part at the bottom of the connecting column head of the upper prefabricated column, the vertical load of the upper prefabricated column can be transmitted to the lower prefabricated column, while ensuring that the upper prefabricated column can rotate freely at the top of the lower prefabricated column for leveling;
[0011] 2. This structure is suitable for leveling and fixing the cast-in-place nodes of prefabricated columns. By setting the upper steel support kit, the lower steel support kit and the elongated screw rods, self-fixation can be achieved without external supports such as legs. The application scenarios are almost unlimited, and the upper and lower steel support kits and the elongated screw rods can be reused. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0013] Figure 2 This is a schematic diagram of the bottom structure of the upper prefabricated column of the utility model.
[0014] Figure numerals: 1. lower prefabricated column; 2. upper prefabricated column; 3. lower steel support kit; 4. connecting column head; 5. rigid prefabricated part; 6. upper steel support kit; 7. elongated screw rod. DETAILED DESCRIPTION
[0015] 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.
[0016] See also Figure 1-Figure 2 In this embodiment: a structure suitable for leveling and fixing cast-in-place nodes of prefabricated columns, comprising a lower prefabricated column 1 and an upper prefabricated column 2, wherein a groove is arranged on the top of the lower prefabricated column 1, and lower steel support kits 3 are penetrated through the front and side surfaces of the lower prefabricated column 1, and the two lower steel support kits 3 are both located below the groove, and the lower steel support kits 3 can be pulled out from the lower prefabricated column 1.
[0017] A protruding connecting column head 4 is reserved at the bottom of the upper prefabricated column 2, and a rigid prefabricated part 5 is buried in the central position of the bottom of the connecting column head 4. The rigid prefabricated part 5 is a hemispherical steel prefabricated part. The connecting column head 4 is placed in the groove at the top of the lower prefabricated column 1. At this time, the rigid prefabricated part 5 is against the top of the lower prefabricated column 1, and the vertical load of the upper prefabricated column 2 is transmitted to the lower prefabricated column 1 through the rigid prefabricated part 5. The hemispherical rigid prefabricated part 5 can rotate freely to flexibly level the upper prefabricated column 2. The shape of the rigid prefabricated part 5 is not fixed to be hemispherical, and can also be replaced by an inverted cone or other shapes. The upper surface and side surfaces are penetrated by an upper steel support kit 6, and four elongated screws 7 are threadedly connected between the two lower steel support kits 3 and the two upper steel support kits 6. After the upper prefabricated column 2 is leveled, the upper prefabricated column 2 can be fixed by the upper and lower steel support kits through the elongated screws 7 without other external support. The lower steel support kit 3 and the upper steel support kit 6 are square steel bars of the same shape and size. Screw holes that pass through the upper and lower ends of the square steel bars are reserved and can cooperate with the elongated screws 7. The square steel bars can be replaced by I-beam bars or round steel bars, and the elongated screws 7 are steel screws.
[0018] The working principle and use process of the utility model: when the utility model is used for the structure of leveling and fixing the cast-in-place nodes of prefabricated columns, mortar is applied in the groove at the top of the lower prefabricated column 1, and the connecting column head 4 at the bottom of the upper prefabricated column 2 is placed in the groove. At this time, the rigid prefabricated part 5 is against the top of the lower prefabricated column 1, and the upper prefabricated column 2 is leveled by rotating the hemispherical rigid prefabricated part 5. After the upper prefabricated column 2 is leveled, the lower steel support kit 3 and the upper steel support kit 6 are connected by the elongated screw rods 7, so as to fix the upper prefabricated column 2. No other external support is required, and the application scenario is not restricted. Then, necessary formworks are set up around the upper and lower prefabricated columns for secondary pouring of concrete. After the concrete reaches the designed strength, the formwork is removed, and then the lower steel support kit 3, the upper steel support kit 6 and the elongated screw rods 7 are removed. The lower steel support kit 3, the upper steel support kit 6 and the elongated screw rods 7 can be reused.
[0019] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A structure suitable for leveling and fixing cast-in-place nodes of prefabricated columns, comprising a lower prefabricated column (1) and an upper prefabricated column (2), characterized in that: The top of the lower prefabricated column (1) is provided with a groove, and the front and side surfaces of the lower prefabricated column (1) are penetrated by lower profile steel support kits (3), and the two lower profile steel support kits (3) are located below the groove. The bottom of the upper prefabricated column (2) is reserved with a protruding connecting column head (4), and a rigid prefabricated part (5) is buried in the central position of the bottom of the connecting column head (4). The connecting column head (4) is placed in the groove at the top of the lower prefabricated column (1). The front and side surfaces of the upper prefabricated column (2) are penetrated by upper profile steel support kits (6), and four elongated screw rods (7) are connected between the two lower profile steel support kits (3) and the two upper profile steel support kits (6) by threads.
2. A structure suitable for leveling and fixing cast-in-place nodes of prefabricated columns according to claim 1, characterized in that: The lower steel support kit (3) and the upper steel support kit (6) are both square steel bars of the same shape and size, with screw holes penetrating from top to bottom and capable of cooperating with the elongated screw rods (7) being reserved at both ends of the square steel bars.
3. The structure suitable for leveling and fixing cast-in-place nodes of prefabricated columns according to claim 1, characterized in that: The rigid prefabricated part (5) is a hemispherical steel prefabricated part.
4. The structure suitable for leveling and fixing cast-in-place nodes of prefabricated columns according to claim 1, characterized in that: The pair of elongated screw rods (7) are made of steel screw rods.