A prefabricated steel-reinforced concrete column deep socket joint

Abstract

The present invention discloses a prefabricated assembled steel-concrete column deep socket joint, comprising an upper joint, a lower joint, a bolt hole steel frame, a high-strength bolt, a high-strength nut and concrete; the upper joint comprises a first joint steel frame, a second joint steel frame, a third joint steel frame and a fourth joint steel frame, and its four sides are provided with eight rows and two columns of bolt holes; the lower joint comprises a fifth joint steel frame with a hollow ✚-shaped cross section, and its four protruding columns are provided with eight rows and two columns of bolt holes on the opposite sides; the upper joint and the lower joint are pre-cast with concrete; the upper joint is embedded in the lower joint from top to bottom, and the high-strength bolt is passed through the upper joint and the lower joint along the inner cavity of the bolt hole steel frame, and then fastened with a high-strength nut. The present invention realizes the deep socket joint of the upper and lower column joints, has good stability, is very strong in resistance to comprehensive internal stress, has no wet operation on site, and can be installed after completion, which greatly improves the construction efficiency.

Description

Technical Field

[0001] The invention relates to the field of construction, and in particular to a prefabricated assembled steel-framed concrete column deep socket joint. Background Art

[0002] At present, prefabricated building structures have just started, and the forms of prefabricated steel-reinforced concrete components are very limited. There are even fewer forms of such column joints, and the only column joints are flange plus shear key forms. However, this type of column joint has major defects: there is no cross connection length between the upper and lower columns, which makes the stability of this joint poor and the ability to resist comprehensive internal stress is very limited; and part of the concrete needs to be poured during installation, which greatly limits the scope of application. Summary of the invention

[0003] In order to overcome the defects of the prior art, the present invention provides a prefabricated assembled steel-reinforced concrete column deep socket joint with very long upper and lower column cross-connections, good stability, strong resistance to comprehensive internal stress, no wet operation on site, and a wide range of applications.

[0004] The technical scheme is as follows: it comprises an upper joint, a lower joint, a steel frame with bolt holes, high-strength bolts, high-strength nuts and concrete; the upper joint comprises a first joint steel frame, a second joint steel frame, a third joint steel frame and a fourth joint steel frame respectively connected to the four corners of the bottom surface of the upper prefabricated column; the first joint steel frame, the second joint steel frame, the third joint steel frame and the fourth joint steel frame are all bottomless hollow cuboids of the same specification formed by rolling and welding steel plates; the four sides of each hollow cuboid are provided with eight rows and two columns of bolt holes; the rows of bolt holes on the two opposite sides of each hollow cuboid correspond to each other; each hollow cuboid has ... each hollow cuboid has eight rows and two columns of bolt holes; each hollow cuboid has eight rows and two columns of bolt holes; each hollow cuboid has eight rows and two columns of bolt holes; each hollow cuboid has eight rows and two columns of bolt holes; each hollow cuboid has eight rows and two columns of bolt holes; each hollow cuboid has eight rows and two columns of bolt holes; each hollow cuboid has eight rows and two columns of bolt holes; each hollow cuboid has eight rows and two columns of bolt holes; each hollow cuboid has eight rows and two columns of bolt holes; each hollow cuboid has The rows of bolt holes on two adjacent sides of the cube are not on the same horizontal plane, and the horizontal plane where a row of bolt holes on one side is located is between the horizontal planes where two rows of bolt holes on its adjacent side are located. The rows of bolt holes in the same upper and lower positions of different hollow rectangular blocks are all on the same horizontal plane; the lower joint includes a fifth joint steel frame connected to the top surface of the lower prefabricated column and formed by rolling and welding steel plates with a hollow ✚-shaped cross-section. The protruding front, back, left, and right four columnar bodies are hollow rectangular blocks of the same specifications without a bottom and with only three sides. The opposite sides of each hollow rectangular block are provided with eight corresponding The bolt holes in two rows are arranged in a row, the bolt holes in each row of adjacent hollow cuboids are not on the same horizontal plane, and the horizontal plane where the bolt holes in a row of a hollow cuboid are located is between the horizontal planes where the bolt holes in two rows of its adjacent hollow cuboids are located, and the bolt holes in each row of different hollow cuboids with the same upper and lower positions are all on the same horizontal plane; the bolt hole steel frame is a cylinder made of rolled and welded steel plates that matches the inner diameter of the bolt holes, and the bolt hole steel frame is welded between the corresponding bolt holes on the opposite sides of each hollow cuboid of the upper joint and the lower joint; each hollow cuboid of the upper joint is welded with the bolt hole steel frame Concrete is poured in advance in the hollow, and concrete is poured in advance in the lower joint in the hollow with bolt hole steel frame welded thereon; when the upper joint and the lower joint are prefabricated and assembled, the first joint steel frame, the second joint steel frame, the third joint steel frame and the fourth joint steel frame are respectively embedded in the left front space, the right front space, the left rear space and the right rear space of the fifth joint steel frame from top to bottom to realize the socket connection of the upper and lower joints, the bolt hole steel frames of the upper joint are respectively aligned with the inner diameters of the bolt hole steel frames of the corresponding lower joints on the same horizontal plane, and high-strength bolts are used to penetrate the upper joint and the lower joint along the inner length of the bolt hole steel frame cavity, and then fastened with high-strength nuts.

[0005] The above technical solution can be further optimized as follows:

[0006] The socket length between the upper joint and the lower joint is greater than 1.2 meters.

[0007] The steel plate is Q235 steel plate.

[0008] The high-strength nut is fastened in cooperation with the high-strength washer.

[0009] The high-strength bolts are high-strength hexagonal head bolts, and the high-strength nuts are high-strength hexagonal nuts.

[0010] The high-strength hexagonal head bolts, high-strength hexagonal nuts and high-strength washers are made of 45# steel or 20 manganese titanium boron steel.

[0011] Compared with the prior art, the present invention mainly has the following beneficial technical effects:

[0012] 1. The cross connection of the upper and lower columns is more than 1.2 meters long, realizing the deep socket joints of the upper and lower columns, so that the joints have good stability and strong resistance to comprehensive internal stress.

[0013] 2. No more concrete is poured when connecting the upper and lower columns, which truly achieves no wet work on site and can be completed after installation, greatly improving construction efficiency.

[0014] 3. The bolt holes and bolt hole steel frames on the joints are reasonably distributed, laying a good foundation for achieving a firm connection between the upper and lower column joints.

[0015] 4. Use reliable high-strength bolts, high-strength nuts and high-strength washers to provide good protection for the firm connection of the upper and lower column joints.

[0016] 5. Strong adaptability and wide application range. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional overall structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the upper joint structure of the present invention;

[0019] Figure 3 This is a schematic diagram of the lower joint structure of the present invention;

[0020] Figure 4 This is a schematic diagram of the distribution of bolt holes and steel frames of the upper joint of the present invention;

[0021] Figure 5 It is a schematic diagram of the distribution of the bolt holes and steel frames of the lower joint of the present invention;

[0022] Figure 6 Schematic diagram of the horizontal section of the present invention Figure 1 ;

[0023] Figure 7 Schematic diagram of the horizontal section of the present invention Figure 2 ;

[0024] In the figure: 1-upper precast column, 2-high-strength bolt, 3-lower precast column, 4-lower joint, 5-upper joint, 6-first joint steel frame, 7-second joint steel frame, 8-concrete, 9-fourth joint steel frame, 10-third joint steel frame, 11-fifth joint steel frame, 12-bolt hole steel frame of upper joint, 13-bolt hole steel frame of lower joint, 14-left front space of lower joint, 15-left rear space of lower joint, 16-right rear space of lower joint, 17-right front space of lower joint, 18-high-strength nut, 19-bolt hole. DETAILED DESCRIPTION

[0025] The present invention is described in detail below in conjunction with the embodiments and drawings.

[0026] Example 1

[0027] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7A prefabricated assembled steel-concrete column deep socket joint, comprising an upper joint 4, a lower joint 5, a bolt hole steel frame, a high-strength bolt 2, a high-strength nut 18 and concrete 8. The upper joint 4 comprises a first joint steel frame 6, a second joint steel frame 7, a third joint steel frame 10 and a fourth joint steel frame 9 respectively connected to the four corners of the bottom surface of the upper prefabricated column 1. The first joint steel frame 6, the second joint steel frame 7, the third joint steel frame 10 and the fourth joint steel frame 9 are all bottomless hollow cuboids of the same specification formed by rolling and welding steel plates. The four sides of each hollow cuboid are provided with eight rows and two columns of bolt holes 19. The rows of bolt holes 19 on the two opposite sides of each hollow cuboid correspond to each other. The rows of bolt holes 19 on the two adjacent sides of each hollow cuboid are not on the same horizontal plane, and the horizontal plane where a row of bolt holes 19 on one side is located is between the horizontal planes where two rows of bolt holes 19 on its adjacent side are located. The rows of bolt holes 19 with the same upper and lower positions in different hollow cuboids are all on the same horizontal plane. The lower joint 5 includes a fifth joint steel frame 11 connected to the top surface of the lower prefabricated column 3 and formed by rolling and welding steel plates, with a cross section in the shape of a hollow ✚. The four protruding front, back, left, and right columns are hollow cuboids of the same specifications without a bottom and with only three sides. The opposite sides of each hollow cuboid are provided with eight rows and two columns of bolt holes 19 corresponding to each other. The bolt holes 19 in each row of adjacent hollow cuboids are not on the same horizontal plane, and the horizontal plane where a row of bolt holes 19 in a hollow cuboid is located is between the horizontal planes where two rows of bolt holes 19 in its adjacent hollow cuboids are located. The bolt holes 19 in the same upper and lower positions in different hollow cuboids are all on the same horizontal plane. The bolt hole steel frame is a cylinder formed by rolling and welding steel plates and matching the inner diameter of the bolt holes 19. The bolt hole steel frame is welded between the corresponding bolt holes 19 on the opposite sides of each hollow cuboid of the upper joint 4 and the lower joint 5. Concrete 8 is pre-cast in the hollow of each hollow cuboid of the upper joint 4 with a bolt hole steel frame welded thereon, and concrete 8 is pre-cast in the hollow of the lower joint 5 with a bolt hole steel frame welded thereon. When the upper joint 4 and the lower joint 5 are prefabricated and assembled, the first joint steel frame 6, the second joint steel frame 7, the third joint steel frame 10 and the fourth joint steel frame 9 are respectively embedded in the left front space 14, the right front space 17, the left rear space 15 and the right rear space 16 of the fifth joint steel frame 11 from top to bottom to realize the upper and lower joint socket connection, and the bolt hole steel frame 12 of the upper joint is respectively aligned with the inner diameter of the bolt hole steel frame 13 of the corresponding lower joint on the same horizontal plane, and the high-strength bolt 2 is passed through the upper joint 4 and the lower joint 5 along the inner length of the bolt hole steel frame cavity, and then fastened with a high-strength nut 18.

[0028] Example 2

[0029] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 A prefabricated assembled steel-concrete column deep socket joint, comprising an upper joint 4, a lower joint 5, a bolt hole steel frame, a high-strength bolt 2, a high-strength nut 18 and concrete 8. The upper joint 4 comprises a first joint steel frame 6, a second joint steel frame 7, a third joint steel frame 10 and a fourth joint steel frame 9 respectively connected to the four corners of the bottom surface of the upper prefabricated column 1. The first joint steel frame 6, the second joint steel frame 7, the third joint steel frame 10 and the fourth joint steel frame 9 are all bottomless hollow cuboids of the same specification formed by rolling and welding steel plates. The four sides of each hollow cuboid are provided with eight rows and two columns of bolt holes 19. The rows of bolt holes 19 on the two opposite sides of each hollow cuboid correspond to each other. The rows of bolt holes 19 on the two adjacent sides of each hollow cuboid are not on the same horizontal plane, and the horizontal plane where a row of bolt holes 19 on one side is located is between the horizontal planes where two rows of bolt holes 19 on its adjacent side are located. The rows of bolt holes 19 with the same upper and lower positions in different hollow cuboids are all on the same horizontal plane. The lower joint 5 includes a fifth joint steel frame 11 connected to the top surface of the lower prefabricated column 3 and formed by rolling and welding steel plates, with a cross section in the shape of a hollow ✚. The four protruding front, back, left, and right columns are hollow cuboids of the same specifications without a bottom and with only three sides. The opposite sides of each hollow cuboid are provided with eight rows and two columns of bolt holes 19 corresponding to each other. The bolt holes 19 in each row of adjacent hollow cuboids are not on the same horizontal plane, and the horizontal plane where a row of bolt holes 19 in a hollow cuboid is located is between the horizontal planes where two rows of bolt holes 19 in its adjacent hollow cuboids are located. The bolt holes 19 in the same upper and lower positions in different hollow cuboids are all on the same horizontal plane. The bolt hole steel frame is a cylinder formed by rolling and welding steel plates and matching the inner diameter of the bolt holes 19. The bolt hole steel frame is welded between the corresponding bolt holes 19 on the opposite sides of each hollow cuboid of the upper joint 4 and the lower joint 5. Concrete 8 is pre-cast in the hollow of each hollow cuboid of the upper joint 4 with a bolt hole steel frame welded thereon, and concrete 8 is pre-cast in the hollow of the lower joint 5 with a bolt hole steel frame welded thereon. When the upper joint 4 and the lower joint 5 are prefabricated and assembled, the first joint steel frame 6, the second joint steel frame 7, the third joint steel frame 10 and the fourth joint steel frame 9 are respectively embedded in the left front space 14, the right front space 17, the left rear space 15 and the right rear space 16 of the fifth joint steel frame 11 from top to bottom to realize the upper and lower joint socket connection, and the bolt hole steel frame 12 of the upper joint is respectively aligned with the inner diameter of the bolt hole steel frame 13 of the corresponding lower joint on the same horizontal plane, and the high-strength bolt 2 is passed through the upper joint 4 and the lower joint 5 along the inner length of the bolt hole steel frame cavity, and then fastened with a high-strength nut 18.

[0030] The socket length of the upper joint 4 and the lower joint 5 is greater than 1.2 meters to achieve deep socketing of the upper and lower column joints, ensuring that the joint has good stability and strong resistance to comprehensive internal stress.

[0031] Example 3

[0032] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 A prefabricated assembled steel-concrete column deep socket joint, comprising an upper joint 4, a lower joint 5, a bolt hole steel frame, a high-strength bolt 2, a high-strength nut 18 and concrete 8. The upper joint 4 comprises a first joint steel frame 6, a second joint steel frame 7, a third joint steel frame 10 and a fourth joint steel frame 9 respectively connected to the four corners of the bottom surface of the upper prefabricated column 1. The first joint steel frame 6, the second joint steel frame 7, the third joint steel frame 10 and the fourth joint steel frame 9 are all bottomless hollow cuboids of the same specification formed by rolling and welding steel plates. The four sides of each hollow cuboid are provided with eight rows and two columns of bolt holes 19. The rows of bolt holes 19 on the two opposite sides of each hollow cuboid correspond to each other. The rows of bolt holes 19 on the two adjacent sides of each hollow cuboid are not on the same horizontal plane, and the horizontal plane where a row of bolt holes 19 on one side is located is between the horizontal planes where two rows of bolt holes 19 on its adjacent side are located. The rows of bolt holes 19 with the same upper and lower positions in different hollow cuboids are all on the same horizontal plane. The lower joint 5 includes a fifth joint steel frame 11 connected to the top surface of the lower prefabricated column 3 and formed by rolling and welding steel plates, with a cross section in the shape of a hollow ✚. The four protruding front, back, left, and right columns are hollow cuboids of the same specifications without a bottom and with only three sides. The opposite sides of each hollow cuboid are provided with eight rows and two columns of bolt holes 19 corresponding to each other. The bolt holes 19 in each row of adjacent hollow cuboids are not on the same horizontal plane, and the horizontal plane where a row of bolt holes 19 in a hollow cuboid is located is between the horizontal planes where two rows of bolt holes 19 in its adjacent hollow cuboids are located. The bolt holes 19 in the same upper and lower positions in different hollow cuboids are all on the same horizontal plane. The bolt hole steel frame is a cylinder formed by rolling and welding steel plates and matching the inner diameter of the bolt holes 19. The bolt hole steel frame is welded between the corresponding bolt holes 19 on the opposite sides of each hollow cuboid of the upper joint 4 and the lower joint 5. Concrete 8 is pre-cast in the hollow of each hollow cuboid of the upper joint 4 with a bolt hole steel frame welded thereon, and concrete 8 is pre-cast in the hollow of the lower joint 5 with a bolt hole steel frame welded thereon. When the upper joint 4 and the lower joint 5 are prefabricated and assembled, the first joint steel frame 6, the second joint steel frame 7, the third joint steel frame 10 and the fourth joint steel frame 9 are respectively embedded in the left front space 14, the right front space 17, the left rear space 15 and the right rear space 16 of the fifth joint steel frame 11 from top to bottom to realize the upper and lower joint socket connection, and the bolt hole steel frame 12 of the upper joint is respectively aligned with the inner diameter of the bolt hole steel frame 13 of the corresponding lower joint on the same horizontal plane, and the high-strength bolt 2 is passed through the upper joint 4 and the lower joint 5 along the inner length of the bolt hole steel frame cavity, and then fastened with a high-strength nut 18.

[0033] The socket length of the upper joint 4 and the lower joint 5 is greater than 1.2 meters to achieve deep socketing of the upper and lower column joints, ensuring that the joint has good stability and strong resistance to comprehensive internal stress; the steel plate adopts Q235 steel plate with good comprehensive performance.

[0034] Example 4

[0035] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7A prefabricated assembled steel-concrete column deep socket joint, comprising an upper joint 4, a lower joint 5, a bolt hole steel frame, a high-strength bolt 2, a high-strength nut 18 and concrete 8. The upper joint 4 comprises a first joint steel frame 6, a second joint steel frame 7, a third joint steel frame 10 and a fourth joint steel frame 9 respectively connected to the four corners of the bottom surface of the upper prefabricated column 1. The first joint steel frame 6, the second joint steel frame 7, the third joint steel frame 10 and the fourth joint steel frame 9 are all bottomless hollow cuboids of the same specification formed by rolling and welding steel plates. The four sides of each hollow cuboid are provided with eight rows and two columns of bolt holes 19. The rows of bolt holes 19 on the two opposite sides of each hollow cuboid correspond to each other. The rows of bolt holes 19 on the two adjacent sides of each hollow cuboid are not on the same horizontal plane, and the horizontal plane where a row of bolt holes 19 on one side is located is between the horizontal planes where two rows of bolt holes 19 on its adjacent side are located. The rows of bolt holes 19 with the same upper and lower positions in different hollow cuboids are all on the same horizontal plane. The lower joint 5 includes a fifth joint steel frame 11 connected to the top surface of the lower prefabricated column 3 and formed by rolling and welding steel plates, with a cross section in the shape of a hollow ✚. The four protruding front, back, left, and right columns are hollow cuboids of the same specifications without a bottom and with only three sides. The opposite sides of each hollow cuboid are provided with eight rows and two columns of bolt holes 19 corresponding to each other. The bolt holes 19 in each row of adjacent hollow cuboids are not on the same horizontal plane, and the horizontal plane where a row of bolt holes 19 in a hollow cuboid is located is between the horizontal planes where two rows of bolt holes 19 in its adjacent hollow cuboids are located. The bolt holes 19 in the same upper and lower positions in different hollow cuboids are all on the same horizontal plane. The bolt hole steel frame is a cylinder formed by rolling and welding steel plates and matching the inner diameter of the bolt holes 19. The bolt hole steel frame is welded between the corresponding bolt holes 19 on the opposite sides of each hollow cuboid of the upper joint 4 and the lower joint 5. Concrete 8 is pre-cast in the hollow of each hollow cuboid of the upper joint 4 with a bolt hole steel frame welded thereon, and concrete 8 is pre-cast in the hollow of the lower joint 5 with a bolt hole steel frame welded thereon. When the upper joint 4 and the lower joint 5 are prefabricated and assembled, the first joint steel frame 6, the second joint steel frame 7, the third joint steel frame 10 and the fourth joint steel frame 9 are respectively embedded in the left front space 14, the right front space 17, the left rear space 15 and the right rear space 16 of the fifth joint steel frame 11 from top to bottom to realize the upper and lower joint socket connection, and the bolt hole steel frame 12 of the upper joint is respectively aligned with the inner diameter of the bolt hole steel frame 13 of the corresponding lower joint on the same horizontal plane, and the high-strength bolt 2 is passed through the upper joint 4 and the lower joint 5 along the inner length of the bolt hole steel frame cavity, and then fastened with a high-strength nut 18.

[0036] The socket length of the upper joint 4 and the lower joint 5 is greater than 1.2 meters to achieve deep socket joints of the upper and lower column joints, ensuring that the joint has good stability and strong resistance to comprehensive internal stress; the steel plate adopts Q235 steel plate with good comprehensive performance; the high-strength nut 18 is tightened with a high-strength washer to protect the surface of the joint from being scratched by the high-strength nut 18.

[0037] Example 5

[0038] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7A prefabricated assembled steel-concrete column deep socket joint, comprising an upper joint 4, a lower joint 5, a bolt hole steel frame, a high-strength bolt 2, a high-strength nut 18 and concrete 8. The upper joint 4 comprises a first joint steel frame 6, a second joint steel frame 7, a third joint steel frame 10 and a fourth joint steel frame 9 respectively connected to the four corners of the bottom surface of the upper prefabricated column 1. The first joint steel frame 6, the second joint steel frame 7, the third joint steel frame 10 and the fourth joint steel frame 9 are all bottomless hollow cuboids of the same specification formed by rolling and welding steel plates. The four sides of each hollow cuboid are provided with eight rows and two columns of bolt holes 19. The rows of bolt holes 19 on the two opposite sides of each hollow cuboid correspond to each other. The rows of bolt holes 19 on the two adjacent sides of each hollow cuboid are not on the same horizontal plane, and the horizontal plane where a row of bolt holes 19 on one side is located is between the horizontal planes where two rows of bolt holes 19 on its adjacent side are located. The rows of bolt holes 19 with the same upper and lower positions in different hollow cuboids are all on the same horizontal plane. The lower joint 5 includes a fifth joint steel frame 11 connected to the top surface of the lower prefabricated column 3 and formed by rolling and welding steel plates, with a cross section in the shape of a hollow ✚. The four protruding front, back, left, and right columns are hollow cuboids of the same specifications without a bottom and with only three sides. The opposite sides of each hollow cuboid are provided with eight rows and two columns of bolt holes 19 corresponding to each other. The bolt holes 19 in each row of adjacent hollow cuboids are not on the same horizontal plane, and the horizontal plane where a row of bolt holes 19 in a hollow cuboid is located is between the horizontal planes where two rows of bolt holes 19 in its adjacent hollow cuboids are located. The bolt holes 19 in the same upper and lower positions in different hollow cuboids are all on the same horizontal plane. The bolt hole steel frame is a cylinder formed by rolling and welding steel plates and matching the inner diameter of the bolt holes 19. The bolt hole steel frame is welded between the corresponding bolt holes 19 on the opposite sides of each hollow cuboid of the upper joint 4 and the lower joint 5. Concrete 8 is pre-cast in the hollow of each hollow cuboid of the upper joint 4 with a bolt hole steel frame welded thereon, and concrete 8 is pre-cast in the hollow of the lower joint 5 with a bolt hole steel frame welded thereon. When the upper joint 4 and the lower joint 5 are prefabricated and assembled, the first joint steel frame 6, the second joint steel frame 7, the third joint steel frame 10 and the fourth joint steel frame 9 are respectively embedded in the left front space 14, the right front space 17, the left rear space 15 and the right rear space 16 of the fifth joint steel frame 11 from top to bottom to realize the upper and lower joint socket connection, and the bolt hole steel frame 12 of the upper joint is respectively aligned with the inner diameter of the bolt hole steel frame 13 of the corresponding lower joint on the same horizontal plane, and the high-strength bolt 2 is passed through the upper joint 4 and the lower joint 5 along the inner length of the bolt hole steel frame cavity, and then fastened with a high-strength nut 18.

[0039] The socket length of the upper joint 4 and the lower joint 5 is greater than 1.2 meters to achieve deep socket joints of the upper and lower column joints, ensuring that the joint has good stability and strong resistance to comprehensive internal stress; the steel plate adopts Q235 steel plate with good comprehensive performance; the high-strength nut 18 is tightened with a high-strength washer to protect the surface of the joint from being scratched by the high-strength nut 18; the high-strength bolt 2 adopts a high-strength hexagonal head bolt, and the high-strength nut 18 adopts a high-strength hexagonal nut to enhance its stability.

[0040] Example 6

[0041] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7A prefabricated assembled steel-concrete column deep socket joint, comprising an upper joint 4, a lower joint 5, a bolt hole steel frame, a high-strength bolt 2, a high-strength nut 18 and concrete 8. The upper joint 4 comprises a first joint steel frame 6, a second joint steel frame 7, a third joint steel frame 10 and a fourth joint steel frame 9 respectively connected to the four corners of the bottom surface of the upper prefabricated column 1. The first joint steel frame 6, the second joint steel frame 7, the third joint steel frame 10 and the fourth joint steel frame 9 are all bottomless hollow cuboids of the same specification formed by rolling and welding steel plates. The four sides of each hollow cuboid are provided with eight rows and two columns of bolt holes 19. The rows of bolt holes 19 on the two opposite sides of each hollow cuboid correspond to each other. The rows of bolt holes 19 on the two adjacent sides of each hollow cuboid are not on the same horizontal plane, and the horizontal plane where a row of bolt holes 19 on one side is located is between the horizontal planes where two rows of bolt holes 19 on its adjacent side are located. The rows of bolt holes 19 with the same upper and lower positions in different hollow cuboids are all on the same horizontal plane. The lower joint 5 includes a fifth joint steel frame 11 connected to the top surface of the lower prefabricated column 3 and formed by rolling and welding steel plates, with a cross section in the shape of a hollow ✚. The four protruding front, back, left, and right columns are hollow cuboids of the same specifications without a bottom and with only three sides. The opposite sides of each hollow cuboid are provided with eight rows and two columns of bolt holes 19 corresponding to each other. The bolt holes 19 in each row of adjacent hollow cuboids are not on the same horizontal plane, and the horizontal plane where a row of bolt holes 19 in a hollow cuboid is located is between the horizontal planes where two rows of bolt holes 19 in its adjacent hollow cuboids are located. The bolt holes 19 in the same upper and lower positions in different hollow cuboids are all on the same horizontal plane. The bolt hole steel frame is a cylinder formed by rolling and welding steel plates and matching the inner diameter of the bolt holes 19. The bolt hole steel frame is welded between the corresponding bolt holes 19 on the opposite sides of each hollow cuboid of the upper joint 4 and the lower joint 5. Concrete 8 is pre-cast in the hollow of each hollow cuboid of the upper joint 4 with a bolt hole steel frame welded thereon, and concrete 8 is pre-cast in the hollow of the lower joint 5 with a bolt hole steel frame welded thereon. When the upper joint 4 and the lower joint 5 are prefabricated and assembled, the first joint steel frame 6, the second joint steel frame 7, the third joint steel frame 10 and the fourth joint steel frame 9 are respectively embedded in the left front space 14, the right front space 17, the left rear space 15 and the right rear space 16 of the fifth joint steel frame 11 from top to bottom to realize the upper and lower joint socket connection, and the bolt hole steel frame 12 of the upper joint is respectively aligned with the inner diameter of the bolt hole steel frame 13 of the corresponding lower joint on the same horizontal plane, and the high-strength bolt 2 is passed through the upper joint 4 and the lower joint 5 along the inner length of the bolt hole steel frame cavity, and then fastened with a high-strength nut 18.

[0042] The socket length of the above-mentioned upper joint 4 and lower joint 5 is greater than 1.2 meters to achieve deep socket of the upper and lower column joints, ensuring that the joint has good stability and strong resistance to comprehensive internal stress; the steel plate adopts Q235 steel plate with good comprehensive performance; the high-strength nut 18 is tightened with the high-strength washer to protect the surface of the joint from being scratched by the high-strength nut 18; the high-strength bolt 2 adopts a high-strength hexagonal head bolt, and the high-strength nut 18 adopts a high-strength hexagonal nut to enhance its stability; the material of the high-strength hexagonal head bolt, high-strength hexagonal nut and high-strength washer is high-strength 45 steel or 20 manganese titanium boron steel.

[0043] The basic principles of the present invention are as follows:

[0044] Before the first joint steel frame 6, the second joint steel frame 7, the third joint steel frame 10 and the fourth joint steel frame 9 are rolled and welded, the bolt hole steel frame 12 of the upper joint is welded to the steel plate in advance; before the fifth joint steel frame 11 is rolled and welded, the bolt hole steel frame 13 of the lower joint is welded to the steel plate in advance; the high-strength bolts 2, high-strength nuts 18 and high-strength washers are purchased as finished products from the manufacturer; the bolt holes 19 on the steel plate are drilled and formed with an electric drill; concrete 8 is poured in advance into the first joint steel frame 6, the second joint steel frame 7, the third joint steel frame 10 and the fourth joint steel frame 9 to form a complete upper joint 4 prefabricated part; concrete 8 is poured in advance into the fifth joint steel frame 11 to form a complete lower joint 5 prefabricated part; the complete upper joint 4 prefabricated part and the complete lower joint 5 prefabricated part are combined together to form a joint as a whole. The specific construction steps of this deep socket joint are generally as follows: the first step is that the upper joint 4 and the lower joint 5 are both manufactured in the factory. After arriving at the site, the lower joint 5 is installed at the bottom to receive the upper joint 4; the second step is that the upper joint 4 is embedded in the lower joint 5 from top to bottom, and the inner diameters of the bolt hole steel frame 12 of the upper joint and the bolt hole steel frame 13 of the lower joint are aligned respectively; the third step is to pass the screw rod of the high-strength bolt 2 through the upper joint 4 and the lower joint 5 along the inner length of the bolt hole steel frame; the fourth step is to put on the high-strength washer, tighten each high-strength nut 18, and check the tightness of each high-strength nut 18 one by one to ensure that there is no risk.

Claims

1. A prefabricated steel-reinforced concrete column deep socket joint, characterized in that: It includes an upper joint, a lower joint, a bolt hole steel frame, high-strength bolts, high-strength nuts and concrete; the upper joint includes a first joint steel frame, a second joint steel frame, a third joint steel frame and a fourth joint steel frame respectively connected to the four corners of the bottom surface of the upper prefabricated column, the first joint steel frame, the second joint steel frame, the third joint steel frame and the fourth joint steel frame are all bottomless hollow cuboids of the same specifications formed by rolling and welding steel plates, and the four sides of each hollow cuboid are provided with eight rows and two columns of bolt holes, and the rows of bolt holes on the two opposite sides of each hollow cuboid correspond to each other, and the adjacent two sides of each hollow cuboid are connected to each other. The rows of bolt holes on the sides are not on the same horizontal plane, and the horizontal plane of a row of bolt holes on one side is between the horizontal planes of two rows of bolt holes on its adjacent side. The rows of bolt holes in the same upper and lower positions of different hollow cuboids are on the same horizontal plane. The lower joint includes a fifth joint steel frame connected to the top surface of the lower prefabricated column and formed by rolling and welding steel plates with a hollow +-shaped cross-section. The protruding front, back, left, and right four columnar bodies are hollow cuboids with the same specifications and no bottom and only three sides. The opposite sides of each hollow cuboid are provided with eight rows and two columns corresponding to each other. The bolt holes of adjacent hollow cuboids are not on the same horizontal plane, and the horizontal plane of a row of bolt holes of a hollow cuboid is between the horizontal planes of two rows of bolt holes of its adjacent hollow cuboids. The bolt holes of different hollow cuboids with the same upper and lower positions are all on the same horizontal plane. The bolt hole steel frame is a cylinder made of rolled and welded steel plates that matches the inner diameter of the bolt holes. The bolt hole steel frame is welded between the corresponding bolt holes on the opposite sides of the hollow cuboids of the upper joint and the lower joint. The hollow cuboids of the upper joint are welded with the bolt hole steel frame in the hollow The upper and lower joints are pre-cast with concrete in the hollow of the steel frame with bolt holes welded therein; when the upper and lower joints are prefabricated and assembled, the first joint steel frame, the second joint steel frame, the third joint steel frame and the fourth joint steel frame are respectively embedded in the left front space, the right front space, the left rear space and the right rear space of the fifth joint steel frame from top to bottom to realize the socket connection of the upper and lower joints, the bolt hole steel frame of the upper joint is respectively aligned with the inner diameter of the bolt hole steel frame of the corresponding lower joint on the same horizontal plane, and the high-strength bolts are passed through the upper and lower joints along the inner length of the bolt hole steel frame cavity, and then fastened with high-strength nuts; The socket length between the upper joint and the lower joint is greater than 1.2 meters; The high-strength nut is fastened in cooperation with the high-strength washer.

2. A prefabricated steel-reinforced concrete column deep socket joint according to claim 1, characterized in that: The high-strength bolts are high-strength hexagonal head bolts, and the high-strength nuts are high-strength hexagonal nuts.

3. A prefabricated steel-reinforced concrete column deep socket joint according to claim 2, characterized in that: The high-strength hexagonal head bolts, high-strength hexagonal nuts and high-strength washers are made of 45# steel or 20 manganese titanium boron steel.

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