Connecting structure of prefabricated frame beam and column

Abstract

The utility model discloses a prefabricated frame beam and column connecting structure which comprises a middle column, the left side and the right side of the middle column are connected with prefabricated beams, the prefabricated beams are anchored in the middle column through anchoring steel bars preset in bodies, and anchoring sections are formed; an adjustable connecting assembly is arranged in the anchoring section; the adjustable connecting assembly comprises a left straight thread sleeve and a right straight thread sleeve, a connecting sleeve is arranged between the two straight thread sleeves, the left side and the right side in the connecting sleeve are connected to the corresponding straight thread sleeves through hexagonal head bolts respectively, and the outer sides of the left straight thread sleeve and the right straight thread sleeve are connected with the corresponding anchoring steel bars respectively. By means of the gap between the connecting sleeve and the two hexagonal heads and the adjustable length of the bolt, the anchoring ribs on the two sides are connected into a steel bar with the same tensile strength or the same compressive strength, and the anchoring requirement in a column is met.

Description

Technical Field

[0001] This utility model relates to the field of building engineering technology, and in particular to a connection structure between prefabricated frame beams and columns. Background Technology

[0002] According to relevant regulations in the construction industry, the anchorage reinforcement bars of frame beams within the columns must extend 5d beyond the center of the column (see...). Figure 3 (Inner structure of the central ring), this will cause the anchor bars in the precast beams on both sides of the column to collide and intersect within the joint when they are in the same position. To avoid the anchor bars colliding, the bars must be offset to the left or right or up or down, which brings great trouble to the construction. In order to achieve effective anchorage of the anchor bars in the precast beams within the column, it is considered to prevent the anchor bars from extending beyond the center of the column, and then lap and weld a short steel bar (see Figure 4 (Inner structure of the middle ring) In practice, due to the dense reinforcement in the node area, it is difficult to guarantee the quality of on-site welding. We also considered using a straight threaded sleeve connection, which involves first screwing the sleeve into the anchor bar on one side, and then, after the precast beams on both sides are hoisted into place, retracting the sleeve and screwing it into the other beam for half its length. However, this method also failed in practice. First, it is difficult to align the anchor bars on both sides in a straight line. Second, the thread spacing of the anchor bars on both sides is not a multiple, making it impossible to screw them in. Utility Model Content

[0003] The technical problem to be solved by this utility model is: in order to overcome the shortcomings of the existing technology, a connection structure for prefabricated frame beams and columns is provided to overcome the errors of the steel bars on both sides of the column not being able to rotate, not being on the same straight line, and the arbitrary spacing of the threads on the steel bars, so as to connect the steel bars on both sides with equal strength through a new type of adjustable connection component.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a connection structure between a precast frame beam and a column, including a central column, with precast beams connected to the left and right sides of the central column, and the precast beams being anchored in the central column by anchoring steel bars preset in the body, forming an anchoring section.

[0005] An adjustable connection component is provided in the anchoring section, and the left and right sides of the adjustable connection component are respectively connected to the corresponding anchoring steel bars.

[0006] The adjustable connection assembly includes two straight threaded sleeves, and a connecting sleeve is provided between the two straight threaded sleeves. The left and right sides of the connecting sleeve are respectively connected to the corresponding straight threaded sleeves by hexagonal head bolts, and the outer sides of the two straight threaded sleeves are respectively connected to the corresponding anchoring steel bars.

[0007] The connecting sleeve is also provided with sealing plates on both the left and right ends.

[0008] Furthermore, the outer surface of the sealing plate described in this utility model is configured as an inclined surface structure;

[0009] By adopting the above technical solution, the sealing plate and the connecting sleeve are connected by bevel welding. When one side is under pressure, the straight threaded sleeve on that side can be tightly connected to the sealing plate, or an external locking nut can be used between the two to assist in locking. This can play a tightening role when under pressure, making the structure more stable.

[0010] Furthermore, the anchoring steel bar of this utility model is connected to the straight threaded sleeve through the threaded end.

[0011] Furthermore, the connecting sleeve of this utility model is provided with a through hole for the hexagonal head bolt to extend in an adjustable length. The bolt head of the hexagonal head bolt is confined inside the connecting sleeve because its diameter is larger than the diameter of the through hole.

[0012] Furthermore, in this utility model, there are gaps between the bolt head of the hexagonal head bolt and the inner wall of the connecting sleeve, and between the bolt of the hexagonal head bolt and the inner wall of the sealing plate.

[0013] By adopting the above technical solution, the gap between the connecting sleeve and the two hexagonal heads and the adjustable length of the bolts are used to connect the anchor bars on both sides into a single steel bar with equal tensile or compressive strength, thus meeting the anchoring requirements. This also solves the problems of the anchor bars on both sides of the precast beam not being on the same straight line and the thread spacing on both sides not being multiples.

[0014] The beneficial effects of this utility model are as follows: This utility model sets an adjustable connection component at the connection anchorage section between the precast frame beam and the column, and uses the gap between the connecting sleeve and the two hexagonal heads and the adjustable length of the bolts to achieve the connection of the anchor bars on both sides into a single steel bar with equal tensile or compressive strength, thus meeting the anchorage requirements and solving the problems that the anchor bars on both sides of the precast beam are not on the same straight line and that the thread spacing on both sides is not multiple. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the adjustable connection component in this utility model;

[0018] Figure 3This is a schematic diagram in the background technology illustrating the upward bending and avoidance treatment state when the anchor bars intersect inside the central column;

[0019] Figure 4 This is a schematic diagram of a structure in the background art showing the lap welding of a short steel bar to anchor the reinforcement;

[0020] Figure 5 This is a schematic diagram of the structure of the straight threaded sleeve and the sealing plate in this utility model, which uses an external locking nut to assist in locking.

[0021] The following are the labels in the diagram: 1. Central column, 2. Precast beam, 3. Anchoring steel bar, 4. Straight threaded sleeve, 5. Connecting sleeve, 6. Hex head bolt, 7. Sealing plate, 8. Thread, 9. External locking nut, 10. Bevel weld. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] like Figure 1 and Figure 2 The precast frame beam and column connection structure shown includes a central column 1, with precast beams 2 connected to the left and right sides of the central column 1. The precast beams 2 are anchored in the central column 1 by anchoring steel bars 3 pre-set in the body, forming an anchoring section. An adjustable connection component is provided in the anchoring section, and the left and right sides of the adjustable connection component are respectively connected to the corresponding anchoring steel bars 3.

[0024] The adjustable connection assembly includes two straight threaded sleeves 4 on the left and right, and a connecting sleeve 5 is provided between the two straight threaded sleeves 4. The left and right sides of the connecting sleeve 5 are respectively connected to the corresponding straight threaded sleeves 4 by hexagonal head bolts 6. The outer sides of the two straight threaded sleeves 4 are respectively connected to the corresponding anchoring steel bars 3. The left and right end faces of the connecting sleeve 5 are also provided with sealing plates 7.

[0025] The outer face of the sealing plate 7 is designed with a beveled structure, and the sealing plate 7 and the connecting sleeve 5 are connected by a bevel weld to form a bevel welded part 10. The anchoring steel bar 3 is connected to the straight threaded sleeve 4 through the thread 8 at its end.

[0026] The connecting sleeve 5 is provided with a through hole for the hexagonal head bolt 6 to extend in an adjustable length. The bolt head of the hexagonal head bolt 6 is confined inside the connecting sleeve 5 because its diameter is larger than the diameter of the through hole.

[0027] There are gaps between the bolt head of the hexagonal head bolt 6 and the inner wall of the connecting sleeve 5, and between the bolt of the hexagonal head bolt 6 and the inner wall of the sealing plate 7.

[0028] The main principle is: by adding a connecting sleeve and two hexagonal head bolts between two straight threaded sleeves, and by utilizing the gap between the connecting sleeve and the two hexagonal heads and the adjustable length of the bolts, the anchor bars on both sides are connected into a single steel bar with equal tensile or compressive strength, thus achieving the anchoring requirements. The lengths of the hexagonal head bolts and connecting sleeves themselves can be customized, and hexagonal head bolts and connecting sleeves of corresponding sizes can be used according to different environments.

[0029] When reinforcing bars require compression connection, the compression side of the connecting sleeve can be tightly connected to the sealing plate on that side with a straight threaded sleeve, or an external locking nut can be used between the two (see [link]). Figure 5 It assists in locking and can tighten under pressure.

[0030] This invention can also be used for connecting the upper and lower steel cages of concrete piles, as well as for connecting other steel bars that cannot be rotated on both sides.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A connection structure between precast frame beams and columns, characterized in that: Includes a central column (1), and precast beams (2) are connected to the left and right sides of the central column (1). The precast beams (2) are anchored in the central column (1) by anchoring steel bars (3) pre-set in the body, and form an anchoring section. An adjustable connection component is provided in the anchoring section, and the left and right sides of the adjustable connection component are respectively connected to the corresponding anchoring steel bars (3); The adjustable connection assembly includes two straight threaded sleeves (4) on the left and right sides. A connecting sleeve (5) is provided between the two straight threaded sleeves (4). The left and right sides of the connecting sleeve (5) are respectively connected to the corresponding straight threaded sleeves (4) by hexagonal head bolts (6). The outer sides of the two straight threaded sleeves (4) are respectively connected to the corresponding anchoring steel bars (3). The connecting sleeve (5) is also provided with sealing plates (7) on both the left and right ends.

2. The connection structure between precast frame beams and columns according to claim 1, characterized in that: The outer surface of the sealing plate (7) is configured as a sloping structure.

3. The connection structure between precast frame beams and columns according to claim 1, characterized in that: The anchoring steel bar (3) is connected to the straight threaded sleeve (4) through the thread (8) at its end.

4. The connection structure between precast frame beams and columns according to claim 1, characterized in that: The connecting sleeve (5) is provided with a through hole for the hexagonal head bolt (6) to extend in an adjustable length. The bolt head of the hexagonal head bolt (6) is limited inside the connecting sleeve (5) because its diameter is larger than the diameter of the through hole.

5. The connection structure between precast frame beams and columns according to claim 4, characterized in that: There are gaps between the bolt head of the hexagonal head bolt (6) and the inner wall of the connecting sleeve (5), and between the bolt of the hexagonal head bolt (6) and the inner wall of the sealing plate (7).

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