Column head for connecting steel column and concrete in reconstruction project

Abstract

The utility model discloses a column head for connection of a steel column and concrete in a reconstruction project, which comprises a concrete column head steel plate sleeve, a concrete column, a beam side steel plate sleeve, a concrete beam and a column foot bottom plate arranged at the bottom of a newly-added steel column, and the bottom of the newly-added steel column is connected with the column foot bottom plate. A reserved grouting hole is formed in the top of the concrete column head steel plate sleeve, the grouting hole is reserved through the column head steel plate sleeve, a steel column foot anchor bolt is pre-buried, an inorganic concrete material is adopted for pouring, the steel plate sleeve and the concrete column head are connected through opposite-penetrating screws, sealant is injected, and the steel plate sleeve can replace a formwork in traditional concrete structure construction at the same time. Concrete wet operation construction procedures are reduced to a certain extent, the on-site assembly rate of an assembly type building can be effectively increased, the on-site construction environment of the building is improved, industrialization of prefabricated parts of the assembly type building is achieved, meanwhile, due to the fact that inorganic grouting materials are adopted for pouring the joints, the maintenance time of concrete columns is greatly shortened, and the earthquake resistance of the joints is improved.

Description

Technical Field

[0001] The utility model belongs to the technical fields of building reinforcement and reconstruction as well as prefabricated buildings, and particularly relates to a column head for connecting a steel column and concrete in a renovation project. Background Technique

[0002] With the change of urban buildings and land, it is necessary to renovate the appearance of some areas that are incompatible with the development of modern cities. For buildings that have reached the service life (buildings with a service life of 50 years), to extend the subsequent service life of the building, demolition or reinforcement is usually used for renovation. For some buildings, the land value itself is still relatively high. After demolition and reconstruction, due to the restriction of the urban road setback, reconstruction is impossible, resulting in the loss of some state-owned property, which is unacceptable. Therefore, for urban renewal and transformation, reinforcement and renovation are usually selected;

[0003] In the renovation of building appearance, the steel structure has the advantages of light self-weight, no wet operation, high construction efficiency, and can adapt to various building shapes. Therefore, it is the preferred structural type for realizing building shapes in building appearance renovation projects. Old houses usually have a concrete structure as the structural system, and the cross-section of the concrete column generally cannot meet the installation requirements of the newly added steel column. In the connection area, the column head needs to be enlarged or a corbel needs to be set. How to ensure the stable connection between the newly added steel structure and the original concrete structure while taking into account the convenience and speed of construction has become an inevitable problem in such renovation projects. At present, there is no mature method for this kind of reinforcement node;

[0004] Therefore, the utility model provides a column head structure for connecting a steel column and a concrete column in a renovation project Content of the Utility Model

[0005] The purpose of the utility model is to provide a column head for connecting a steel column and concrete in a renovation project to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A column head for connecting a steel column and concrete in a renovation project, including a concrete column head steel plate sleeve, a concrete column, a beam side steel plate sleeve, a concrete beam, and a column base plate arranged at the bottom of the newly added steel column. The bottom of the newly added steel column is connected with a column base plate, and the newly added steel column is installed on the top end face of the concrete column. A reserved grouting hole is arranged at the top of the concrete column head steel plate sleeve. A through bolt is connected through between the concrete column head steel plate sleeve and the concrete column. Sealant is poured around the through bolt. Inorganic concrete material is poured into the concrete column head steel plate sleeve. A nut for locking the through bolt is threadedly sleeved at the end of the through bolt.

[0007] Preferably, steel column anchor bolts are connected between the column base plate and the steel plate sleeve of the column head. The steel column anchor bolts are embedded in the concrete steel plate sleeve of the column head. The column base plate is connected to the concrete steel plate sleeve of the column head through the embedded steel column anchor bolts to maintain the firm connection between the through bolts and the masonry structure wall and prevent the problem of shaking of the through bolts.

[0008] Preferably, anchor bars for fixing the steel plate sleeve on the beam side are provided on the steel plate sleeve on the beam side to strengthen the overall firmness of the steel plate sleeve on the beam side.

[0009] Preferably, a reserved hole is provided at the penetrating part of the concrete column and the through bolt. The concrete steel plate sleeve of the column head is fixed on the concrete column through the through bolt penetrating the reserved hole.

[0010] Preferably, the newly added steel column is welded to the column base plate, and the column base plate is connected to the concrete steel plate sleeve of the column head through the embedded steel column anchor bolts to improve the support firmness strength at the connection between the newly added steel column and the column base plate.

[0011] Preferably, a reserved hole is provided at the penetrating part of the through bolt on one side of the concrete beam. The steel plate sleeve on the beam side is fixed on the concrete beam through the through bolt penetrating the reserved hole, and the end of the through bolt is locked by a nut.

[0012] Preferably, the inorganic concrete material is poured into the interior of the concrete steel plate sleeve of the column head through the grouting hole, which can avoid formwork support and improve the construction efficiency.

[0013] Compared with the prior art, the technical effects and advantages of the present utility model are as follows: For the column head connecting the steel column and the concrete in the renovation project, while sealing the connection between the through bolt and the concrete structure with sealant, the firm connection between the through bolt and the masonry structure wall is maintained. By reserving a grouting hole in the steel plate sleeve of the column head and embedding the anchor bolts at the column foot of the steel column, and using inorganic concrete material for pouring, the steel plate sleeve and the concrete column head are connected by through bolts and sealed with sealant. The steel plate sleeve can also replace the formwork in the construction of traditional concrete structures, reducing the wet construction process of concrete to a certain extent, effectively improving the on-site assembly rate of prefabricated buildings, improving the construction environment on the construction site, realizing the industrialization of prefabricated components of prefabricated buildings. At the same time, since inorganic grouting material is used for pouring the joints, the curing time of the concrete column is greatly shortened, thereby improving the seismic performance of the joints and strengthening the integrity. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is the large-scale plan view of the column head connection node of the structure of the present utility model;

[0015] Figure 2 is the large-scale elevation view of the column head connection node of the structure of the present utility model.

[0016] Figure 3The large-scale drawing of the column head connection node A-A of the structure of the utility model.

[0017] Figure 4 The large-scale drawing of the column head connection node B-B of the structure of the utility model.

[0018] Figure 5 The large-scale drawing of the steel plate sleeve on the side of the beam of the structure of the utility model.

[0019] In the figure: 1. Steel plate sleeve of concrete column head; 2. Concrete column; 3. Steel plate sleeve on the side of the beam; 4. Concrete beam; 5. Column base plate; 6. Newly added steel column; 7. Steel column anchor bolt; 8. Reserved grouting hole; 9. Through bolt; 10. Inorganic concrete material; 11. Sealant; 12. Concrete floor slab; 13. Anchor bar; 14. Nut. Specific implementation manner

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0021] Please refer to Figures 1-5 , the present utility model provides a technical solution: A column head for connecting a steel column and concrete in a renovation project, including a steel plate sleeve 1 of a concrete column head, a concrete column 2, a steel plate sleeve 3 on the side of the beam, a concrete beam 4, and a column base plate 5 provided at the bottom of the newly added steel column 6. The bottom of the newly added steel column 6 is connected with a column base plate 5, and the newly added steel column 6 is installed on the top end face of the concrete column 2. A reserved grouting hole 8 is provided at the top of the steel plate sleeve 1 of the concrete column head. A through bolt 9 is connected through between the steel plate sleeve 1 of the concrete column head and the concrete column 2. Sealant 11 is poured around the through bolt 9. While sealing the connection between the through bolt 9 and the concrete structure with the sealant 11, the firmness of the connection between the through bolt and the masonry structure wall is maintained.

[0022] Inorganic concrete material 10 is poured into the steel plate sleeve 1 of the concrete column head. A nut 14 for locking the through bolt 9 is threadedly sleeved at the end of the through bolt 9. The end of the through bolt 9 is locked by the nut 14. A steel column anchor bolt 7 is connected between the column base plate 5 and the steel plate sleeve 1 of the column head. The steel column anchor bolt 7 is embedded in the steel plate sleeve 1 of the concrete column head. The column base plate 5 is connected to the steel plate sleeve 1 of the concrete column head through the embedded steel column anchor bolt 7.

[0023] The steel plate sleeve 3 on the side of the beam is provided with anchor bars 13 for fixing the fixed steel plate sleeve 3 on the side of the beam. There are reserved holes at the penetrating part of the concrete column 2 and the through bolts 9. The steel plate sleeve 1 at the head of the concrete column is fixed on the concrete column 2 through the through bolts 9 penetrating the reserved holes.

[0024] The newly added steel column 6 is welded to the column base plate 5. The column base plate 5 is connected to the steel plate sleeve 1 at the head of the concrete column through the embedded steel column anchor bolts 7. There are reserved holes at the penetrating part of the through bolts 9 on one side of the concrete beam 4. The steel plate sleeve 3 on the side of the beam is fixed on the concrete beam 4 through the through bolts 9 penetrating the reserved holes, and the ends of the through bolts 9 are locked by nuts 14.

[0025] The inorganic concrete material 10 is poured into the interior of the steel plate sleeve 1 at the head of the concrete column through the grouting holes 8. Pouring the inorganic concrete material 10 through the grouting holes 8 can avoid formwork support and improve the construction efficiency.

[0026] Specifically, in use, the grouting holes 8 are reserved in the steel plate sleeve 1 at the head of the column and the steel column base anchor bolts 7 are embedded. The inorganic concrete material 10 is poured, which can reduce the use of formwork and formwork supports, and can accelerate the efficiency of pouring the inorganic concrete 10. The steel plate sleeve 1 at the head of the concrete column is connected and locked with the concrete column 2 through a batch of through bolts 9, and the grouting sealant 11 is poured to achieve the sealing effect in later use. The steel plate sleeve at the head of the concrete column can replace the formwork in the traditional concrete structure construction, reduce the wet operation construction process of concrete to a certain extent, effectively improve the on-site assembly rate of prefabricated buildings, improve the on-site construction environment of buildings, and realize the industrialization of prefabricated components of prefabricated buildings. At the same time, since the inorganic grouting material is used to pour the joints, the curing time of the concrete column is greatly shortened, thereby improving the seismic resistance of the joints and strengthening the integrity.

[0027] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A column head for connecting a steel column and concrete in a renovation project, comprising a concrete column head steel plate sleeve (1), a concrete column (2), a beam side steel plate sleeve (3), a concrete beam (4), and a column base plate (5) provided at the bottom of a newly added steel column (6), characterized in that: The bottom of the newly added steel column (6) is connected with a column base plate (5), and the newly added steel column (6) is installed on the top end face of the concrete column (2). A reserved grouting hole (8) is provided at the top of the concrete column head steel plate sleeve (1). A through bolt (9) is connected through between the concrete column head steel plate sleeve (1) and the concrete column (2). Sealant (11) is poured around the through bolt (9). Inorganic concrete material (10) is poured into the concrete column head steel plate sleeve (1). A nut (14) for locking the through bolt (9) is threadedly sleeved at the end of the through bolt (9).

2. The column head for connecting a steel column and concrete in a renovation project according to claim 1, wherein: A steel column anchor bolt (7) is connected between the column base plate (5) and the column head steel plate sleeve (1). The steel column anchor bolt (7) is embedded in the concrete column head steel plate sleeve (1). The column base plate (5) is connected to the concrete column head steel plate sleeve (1) through the embedded steel column anchor bolt (7).

3. A column head for connecting a steel column and concrete in a renovation project according to claim 1, characterized in that: Anchor bars (13) for fixing the fixed beam side steel plate sleeve (3) are provided on the beam side steel plate sleeve (3).

4. A column head for connecting a steel column and concrete in a renovation project according to claim 1, characterized in that: A reserved hole is provided at the penetration part of the concrete column (2) and the through bolt (9). The concrete column head steel plate sleeve (1) is fixed on the concrete column (2) through the through bolt (9) penetrating the reserved hole.

5. A column head for connecting a steel column and concrete in a renovation project according to claim 1, characterized in that: The newly added steel column (6) is welded to the column base plate (5), and the column base plate (5) is connected to the concrete column head steel plate sleeve (1) through the embedded steel column anchor bolt (7).

6. The column head for connecting a steel column and concrete in a renovation project according to claim 1, characterized in that: A reserved hole is provided at the penetration part of the through bolt (9) on one side of the concrete beam (4). The beam side steel plate sleeve (3) is fixed on the concrete beam (4) through the through bolt (9) penetrating the reserved hole, and the end of the through bolt (9) is locked by a nut (14).

7. The column head for connecting a steel column and concrete in a renovation project according to claim 1, wherein: The inorganic concrete material (10) is poured into the interior of the concrete column head steel plate sleeve (1) through the grouting hole (8).

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