Reinforced joint of concrete filled steel tube flat cylindrical surface outer beam

Abstract

The utility model provides a concrete filled steel tube flat cylindrical surface outer beam reinforcing node, the outer contour of the section of a concrete filled steel tube flat column is rectangular, a longitudinal insertion plate is arranged between the middle parts of short edges in the column along the full height, and brackets are arranged at the rear part of a left outer cylindrical surface and the front part of a right outer cylindrical surface according to the same structural form; transverse reinforcing plates are respectively arranged in the left area and the right area corresponding to the joint with the bracket; sealing plates and transverse stiffening ribs are arranged on the portions, on the two sides of a bracket connecting web plate, of the end, connected with the concrete-filled steel tube flat column, of the bracket according to the same structural form, and haunched upper flange plates and underarm flange plates are welded to the portions, between the sealing plates and the outer cylindrical surface of the concrete-filled steel tube flat column, of the upper end of a bracket upper flange and the lower end of a bracket lower flange respectively. The haunching upper flange plate and the haunching underarm flange plate are vertically symmetrical, and plate bodies are inclined and are as wide as the bracket. The utility model solves the problem of column exposure of a high-rise steel structure building structure and the problem of insufficient out-of-plane connection rigidity of a flat column system, and is convenient to construct.

Description

Technical Field

[0001] The utility model relates to the field of construction, in particular to a reinforced node of an outer beam of a steel tube concrete flat column surface. Background Art

[0002] As people have higher requirements for regular large spaces inside their homes, it is necessary to consciously control the structural dimensions during the structural design stage. In particular, conventional large-section columns are prone to forming convex corners in the corners of the room. It has become a general trend to design the column section into a flat column with the same width as the wall. However, the slender flat column section is often not the inherent size of standard steel. How to quickly and efficiently produce such non-standard flat columns and how to design and strengthen the beam-column joints are urgent issues that need to be solved. Utility Model Content

[0003] In order to solve the above technical problems, the utility model proposes a steel tube concrete flat column surface external beam reinforcement node, which solves the problem of exposed columns in high-rise steel structure buildings and the problem of insufficient external connection rigidity of the flat column system, and is convenient to construct.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A reinforced steel tube concrete flat column outer beam node, the structural characteristics of which are:

[0006] The steel tube concrete flat column is made of unequal angle steel and equal angle steel. The cross-section outer contour is rectangular. A longitudinal insert is set along the full height between the middle of the short side of the column. The column is divided into two parts by the longitudinal insert into the left area and the right area. The rear of the left outer column and the front of the right outer column are provided with corbels in the same structural form. The left area and the right area are provided with transverse reinforcement plates corresponding to the connection with the corbels.

[0007] The cross-section of the corbel is an "I" shape, and the end portion connected to the steel tube concrete flat column is provided with a cover plate and a transverse stiffening rib on both sides of the corbel connecting web in the same structural form. The transverse stiffening rib is arranged between the upper flange of the corbel and the outer edge of the lower flange of the corbel, one end is welded to the outer cylindrical surface of the steel tube concrete flat column, and the other end is sealed by the cover plate between the corbel connecting web, the upper flange of the corbel and the lower flange of the corbel. An upper armpit flange plate and an underarm flange plate are respectively welded to the upper end of the upper flange of the corbel and the lower end of the lower flange of the corbel between the location of the cover plate and the outer cylindrical surface of the steel tube concrete flat column. The upper armpit flange plate and the underarm flange plate are symmetrical up and down, and the plate body is inclined and has the same width as the corbel. An upright upper armpit web plate is centrally arranged between the upper armpit flange plate and the upper flange of the corbel, and an upright underarm web plate is centrally arranged between the underarm flange plate and the lower flange of the corbel.

[0008] The structural features of the utility model also lie in:

[0009] The steel tube concrete flat column is filled with C30 self-compacting concrete.

[0010] The transverse reinforcement plate is aligned with the corbel connection web and has the same thickness. Full penetration butt welding and equal strength butt welding are adopted between them.

[0011] The left and right areas of the steel tube concrete flat column are divided into front, middle and rear areas by unequal angle steels and equal angle steels respectively, and the left and right corbels are connected to the rear area of ​​the left area and the front area of ​​the right area respectively.

[0012] Compared with the prior art, the beneficial effects of the utility model are embodied in:

[0013] The utility model innovatively utilizes multiple types of angle steel standard parts to splice and weld into non-standard flat column sections, fills the interior with self-compacting concrete, and designs out-of-plane beam reinforcement connection nodes by adding axilla corbels, thereby ensuring the rigidity of the node domain, effectively improving the seismic performance of high-rise steel structure buildings, solving the problems of exposed columns in high-rise steel structure buildings and insufficient out-of-plane connection stiffness of the flat column system, and has good application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0015] Figure 2 It is a cross-sectional structural schematic diagram of the utility model;

[0016] Figure 3 It is a side structural schematic diagram of the utility model.

[0017] In the figure, 1 is a steel tube concrete flat column; 11 is an unequal angle steel; 12 is an equal angle steel; 13 is C30 self-compacting concrete poured; 14 is a transverse reinforcing plate; 15 is a longitudinal insert plate; 21 is a corbel upper flange; 22 is a corbel lower flange; 23 is a corbel connecting web; 24 is a sealing plate; 25 is a transverse stiffening rib; 26 is an upper axil flange plate; 27 is an underarm flange plate; 28 is an upper axil web plate; 29 is an underarm web plate. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model will be clearly and completely described below in combination with the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.

[0019] Please refer to Figures 1 to 3 The reinforced node structure of the steel tube concrete flat column outer beam of this embodiment includes:

[0020] The steel tube concrete flat column 1 is formed by splicing unequal angle steels 11 and equal angle steels 12, and the outer contour of the cross section is rectangular. A longitudinal insert plate 15 is arranged along the full height between the middle of the short sides in the column. The column is divided into a left area and a right area by the longitudinal insert plate 15. The rear part of the left outer column surface and the front part of the right outer column surface are provided with a corbel in the same structural form. The left area and the right area are provided with a transverse reinforcing plate 14 corresponding to the connection with the corbel respectively.

[0021] The cross section of the corbel is an "I" shape, and the end connected to the steel tube concrete flat column 1 is provided with a sealing plate 24 and a transverse stiffening rib 25 on both sides of the corbel connection web 23 in the same structural form. The transverse stiffening rib 25 is arranged between the corbel upper flange 21 and the outer edge of the corbel lower flange 22, one end of which is welded to the outer cylindrical surface of the steel tube concrete flat column 1, and the other end is sealed between the corbel connection web 23, the corbel upper flange 21, and the corbel lower flange 22 by a sealing plate 24. An upper armpit flange plate 26 and an underarm flange plate 27 are welded between the sealing plate 24 and the outer cylindrical surface of the steel tube concrete flat column 1, and the upper armpit flange plate 26 and the underarm flange plate 27 are symmetrical up and down, and the plate body is inclined and has the same width as the corbel. An upright upper armpit web plate 28 is centrally arranged between the upper armpit flange plate 26 and the upper flange 21 of the corbel, and an upright underarm web plate 29 is centrally arranged between the underarm flange plate 27 and the lower flange 22 of the corbel.

[0022] In the specific implementation, the corresponding structural settings also include:

[0023] The steel tube concrete flat column 1 is filled with C30 self-compacting concrete 13.

[0024] The transverse reinforcing plate 14 is aligned with the corbel connecting web 23 and has the same thickness. Full penetration butt welding is adopted therebetween to ensure equal strength butt welding.

[0025] The left and right areas of the steel tube concrete flat column 1 are divided into front, middle and rear areas by unequal angle steels 11 and equal angle steels 12, respectively. The left and right corbels are connected to the rear area of ​​the left area and the front area of ​​the right area, respectively.

[0026] As an example, the construction can be carried out according to the following steps:

[0027] a. The steel tube concrete flat column 1 is made of various types of angle steel standard parts. The curved surface of the angle steel end needs to be cut and polished to become a straight mouth, and then a single groove is processed to facilitate subsequent welding work;

[0028] b. The welding sequence of the steel tube concrete flat column 1 follows the principle of welding from the middle to the surroundings. The angle steels are welded starting from the middle longitudinal insert plate 15. Single groove welding is required between the angle steel and the longitudinal insert plate 15, and between the angle steels. Finally, a rectangular cross section is enclosed to ensure that no dead angles are left for welding.

[0029] c. A transverse reinforcing plate 14 shall be provided at the connection between the steel tube concrete flat column 1 and the corbel, the thickness of which shall be equal to the corbel connection web 23, and full penetration butt welding shall be adopted between the plates to ensure equal strength butt welding;

[0030] d. At the end where the corbel is connected to the steel tube concrete flat column 1, transverse stiffening ribs 25 and sealing plates 24 are respectively arranged on both sides of the corbel connection web 23 to ensure the shear resistance of the node;

[0031] e. The upper and lower sides of the corbel are respectively provided with an upper armpit flange plate 26 and an lower armpit flange plate 27, as well as an upper armpit web plate 28 and an lower armpit web plate 29. The flanges are welded with grooves, and the webs are welded with double-sided fillet welds. The upper armpit web plate 28 and the lower armpit web plate 29 are processed with arc cutting to avoid stress concentration.

[0032] f. The cavity of the steel tube concrete flat column 1 is filled densely with C30 self-compacting concrete 13, and vibrated during the filling process to ensure uniform filling.

[0033] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A reinforced node of a steel tube concrete flat column outer beam, characterized by: The steel tube concrete flat column is made of unequal angle steel and equal angle steel. The cross-section outer contour is rectangular. A longitudinal insert is set along the full height between the middle of the short side of the column. The column is divided into two parts by the longitudinal insert into the left area and the right area. The rear of the left outer column and the front of the right outer column are provided with corbels in the same structural form. The left area and the right area are provided with transverse reinforcement plates corresponding to the connection with the corbels. The cross-section of the corbel is an "I" shape, and the end portion connected to the steel tube concrete flat column is provided with a cover plate and a transverse stiffening rib on both sides of the corbel connecting web in the same structural form. The transverse stiffening rib is arranged between the upper flange of the corbel and the outer edge of the lower flange of the corbel, one end is welded to the outer cylindrical surface of the steel tube concrete flat column, and the other end is sealed by the cover plate between the corbel connecting web, the upper flange of the corbel and the lower flange of the corbel. An upper armpit flange plate and an underarm flange plate are respectively welded to the upper end of the upper flange of the corbel and the lower end of the lower flange of the corbel between the location of the cover plate and the outer cylindrical surface of the steel tube concrete flat column. The upper armpit flange plate and the underarm flange plate are symmetrical up and down, and the plate body is inclined and has the same width as the corbel. An upright upper armpit web plate is centrally arranged between the upper armpit flange plate and the upper flange of the corbel, and an upright underarm web plate is centrally arranged between the underarm flange plate and the lower flange of the corbel.

2. The reinforced node of the steel tube concrete flat column outer beam according to claim 1 is characterized in that: The steel tube concrete flat column is filled with C30 self-compacting concrete.

3. The reinforced node of the steel tube concrete flat column outer beam according to claim 1 is characterized by: The transverse reinforcement plate is aligned with the corbel connection web and has the same thickness. Full penetration butt welding and equal strength butt welding are adopted between them.

4. The reinforced node of the steel tube concrete flat column outer beam according to claim 1 is characterized by: The left and right areas of the steel tube concrete flat column are divided into front, middle and rear areas by unequal angle steels and equal angle steels respectively, and the left and right corbels are connected to the rear area of ​​the left area and the front area of ​​the right area respectively.

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