Self-resetting energy-consuming square steel column foot

Abstract

The utility model belongs to the technical field of damping supports, and particularly relates to a self-resetting energy-dissipation square steel column foot. Comprising steel columns, a top plate, a bottom plate, strip-shaped energy dissipation mild steel and embedded plates. The top plate, the bottom plate and the steel column are vertically fixed on the steel column, and the top plate, the bottom plate and the pre-embedded plate are connected with a lower foundation through pre-stressed anchor bolts; stiffening rib plates are arranged between the top plate and the embedded plate and distributed around the steel column, every two stiffening rib plates in the front direction, the rear direction, the left direction and the right direction of the steel column define an installation space with an opening in the side face, a notch is formed in the portion, in the area of the installation space, of the bottom plate, and the strip-shaped energy dissipation soft steel is limited in the installation space. The upper end of the strip-shaped energy dissipation soft steel is connected with the top plate through high-strength bolts, and the lower end is connected with the embedded plate through high-strength bolts. The strip-shaped energy dissipation soft steel is a double-S-shaped curve, the double-S-shaped energy dissipation soft steel is used as an energy dissipation component, the damping effect is achieved through deformation of the double-S-shaped energy dissipation soft steel, and the steel structure column base has the ideal earthquake energy dissipation capacity.

Description

Technical Field

[0001] The utility model belongs to the technical field of shock-absorbing supports, and in particular relates to a self-resetting energy-consuming square steel column foot. Background Art

[0002] With the increasing improvement of earthquake resistance technology, the collapse of buildings and casualties in earthquakes have been effectively controlled, and the safety of people's lives and property has been largely guaranteed. However, the losses and impacts caused by earthquakes are still huge, and the overall losses caused by earthquake disasters have a subtle upward trend. Higher requirements are put forward for traditional steel structure column base nodes. The use of steel structure column base nodes with energy dissipation and shock absorption functions and self-reset capabilities can greatly reduce the damage to the main structure in an earthquake and reduce the losses caused by an earthquake. Most of the existing steel structure column base nodes do not have the ability to self-reset, and the energy dissipation capacity is not ideal. Utility Model Content

[0003] The utility model aims to solve the problems that the existing steel structure column foot nodes have no self-reset capability and unsatisfactory energy consumption capability.

[0004] The utility model provides the following technical solutions: a self-resetting energy-absorbing square steel column foot, comprising a steel column, a top plate, a bottom plate, a strip of energy-absorbing soft steel and an embedded plate;

[0005] The top plate and bottom plate are fixed vertically to the steel column, the bottom plate is supported on the embedded plate, and the top plate, bottom plate and embedded plate are connected to the lower foundation through prestressed anchor bolts;

[0006] Stiffening ribs are arranged between the top plate and the embedded plate. The stiffening ribs are distributed around the steel column. The stiffening ribs are arranged in pairs in the front, rear, left and right directions of the steel column to form an installation space with side openings. A notch is arranged in the bottom plate in the installation space area. The strip-shaped energy-absorbing soft steel is confined in the installation space. The upper end of the strip-shaped energy-absorbing soft steel is connected to the top plate by high-strength bolts, and the lower end is connected to the embedded plate by high-strength bolts.

[0007] Furthermore, the steel column is a square steel column, and the steel column is symmetrically centered after being combined with the top plate and the bottom plate.

[0008] Furthermore, the stiffening rib plate is a vertically arranged rectangular plate, which is perpendicular to the cylindrical surface of the steel column. The upper end of the stiffening rib plate is welded and fixed to the top plate, the side surface is welded and fixed to the steel column, and the bottom end is welded and fixed to the bottom plate.

[0009] Furthermore, the number of strip-shaped energy-absorbing soft steels in the front, rear, left and right directions of the steel column is equal, multiple strip-shaped energy-absorbing soft steels in the same direction are arranged along a straight line, and the connecting lines of multiple strip-shaped energy-absorbing soft steels in the same direction are symmetrical with the steel column as the center.

[0010] Furthermore, the base of the bottom plate is a square plate, a hole adapted to the steel column is arranged in the middle of the square plate, and notches are arranged in the center of the four sides.

[0011] Furthermore, the strip-shaped energy dissipation mild steel is a double S-shaped curve.

[0012] Compared with the prior art, the advantages of the present invention are:

[0013] The utility model provides a self-resetting energy-absorbing square steel column base, which uses double S-shaped energy-absorbing soft steel as an energy-absorbing component. Through the deformation of the double S-shaped energy-absorbing soft steel, it plays a role of shock absorption, so that the steel structure column base has an ideal ability to dissipate earthquake energy. Prestressed anchor bolts connect the top plate, the bottom plate, the embedded plate and the lower structure to prevent the column base from overturning. Large anchor bolt holes are reserved at the four corners of the top plate, the bottom plate and the embedded plate to ensure the movement of the column base. The structures between the various components are clear, and the processing and production are simple and easy to assemble, which can greatly shorten the construction period. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the combination of top plate, stiffening rib plate and bottom plate;

[0016] Figure 3 is a schematic diagram of the structure of the base plate;

[0017] Figure 4 It is a schematic diagram of the structure of strip energy-absorbing mild steel.

[0018] In the figure: 1-steel column; 2-top plate; 3-bottom plate; 4-stiffening rib plate; 5-strip energy-absorbing soft steel; 6-embedded plate; 7-high-strength bolt; 8-prestressed anchor bolt. DETAILED DESCRIPTION

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] like Figure 1 , Figure 2 As shown: a self-resetting energy-absorbing square steel column base, comprising a steel column 1, a top plate 2, a bottom plate 3, a strip of energy-absorbing soft steel 5 and an embedded plate 6.

[0021] The top plate 2 and the bottom plate 3 are vertically fixed on the steel column 1, the top plate 2 and the bottom plate 3 are welded to the steel column 1, the bottom plate 3 is supported on the embedded plate 6, and there is movable contact between the bottom plate 3 and the embedded plate 6. The top plate 2, the bottom plate 3, and the embedded plate 6 are connected to the lower foundation through prestressed anchor bolts 8.

[0022] A stiffening rib 4 is arranged between the top plate 2 and the embedded plate 6. The stiffening ribs 4 are distributed around the steel column 1. The stiffening ribs 4 are arranged in pairs in the front, rear, left and right directions of the steel column 1 to form an installation space with side openings. A notch is arranged in the installation space area of ​​the bottom plate 3. The strip-shaped energy-absorbing soft steel 5 is confined within the installation space. The upper end of the strip-shaped energy-absorbing soft steel 5 is connected to the top plate 2 by a high-strength bolt 7, and the lower end is connected to the embedded plate 6 by a high-strength bolt 7. The stiffening ribs 4 limit the distortion of the strip-shaped energy-absorbing soft steel 5 in the non-elastic direction.

[0023] During an earthquake, when relative displacement occurs between the steel column 1 and the lower foundation, the strip energy-absorbing soft steel 5 undergoes elastic deformation. The strip energy-absorbing soft steel 5 in four directions restrain each other and limit the displacement amplitude of the steel column 1. After the external force is unloaded, the strip energy-absorbing soft steel 5 is restored and the steel column 1 is restored.

[0024] The steel column 1, the top plate 2, the bottom plate 3, the embedded plate 6 and the stiffening rib plate 4 are all made of Q355 steel.

[0025] The steel column 1 is a square steel column. A square hole is left in the center of the top plate 2. The steel column 1 passes through the hole and is welded and fixed thereto. Bolt holes are evenly arranged on the four sides of the top plate 2.

[0026] A square hole is left in the center of the bottom plate 3. The size of the square hole is the same as the square hole of the top plate 2, and the position is aligned. After the steel column 1 passes through, it is welded and fixed around the hole. After the steel column 1 is combined with the top plate 2 and the bottom plate 3, it is symmetrical in the center.

[0027] The bottom plate 3 has a circular hole at each corner, and the embedded plate 6 has a circular hole at each corner, and the size and position of the circular hole are consistent with the circular hole of the bottom plate 3. The embedded plate 6 has bolt holes at uniform intervals along the four sides, and the positions of the bolt holes correspond to the bolt holes of the top plate 2 one by one.

[0028] like Figure 3 As shown: the base of the bottom plate 3 is a square plate, a hole matching the steel column 1 is arranged in the middle of the square plate, and notches are arranged in the center of the four sides.

[0029] The stiffening rib plate 4 is a vertically arranged rectangular plate, which is perpendicular to the cylindrical surface of the steel column 1 . The upper end of the stiffening rib plate 4 is welded and fixed to the top plate 2 , the side surface is welded and fixed to the steel column 1 , and the bottom end is welded and fixed to the bottom plate 3 .

[0030] The number of strip-shaped energy-absorbing soft steels 5 in the front, rear, left and right directions of the steel column 1 is equal, and multiple strip-shaped energy-absorbing soft steels 5 in the same direction are arranged along a straight line, and the connecting line of multiple strip-shaped energy-absorbing soft steels 5 in the same direction is symmetrical with the steel column 1 as the center.

[0031] like Figure 4 As shown: the strip-shaped energy-absorbing soft steel 5 is made of low-yield point LYP steel with a yield strength range of 175MPa-277MPa. The strip-shaped energy-absorbing soft steel 5 is a double S-shaped curve. Two strip-shaped energy-absorbing soft steels 5 are arranged in each of the four directions of the steel column 1: front, rear, left, and right.

[0032] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A self-resetting energy-absorbing square steel column foot, characterized in that: It comprises a steel column (1), a top plate (2), a bottom plate (3), a strip-shaped energy-absorbing soft steel (5) and an embedded plate (6); The top plate (2) and the bottom plate (3) are vertically fixed to the steel column (1), the bottom plate (3) is supported on the embedded plate (6), and the top plate (2), the bottom plate (3) and the embedded plate (6) are connected to the lower foundation through prestressed anchor bolts (8); A stiffening rib plate (4) is arranged between the top plate (2) and the embedded plate (6). The stiffening rib plates (4) are distributed around the steel column (1). In the four directions of the front, rear, left and right of the steel column (1), the stiffening rib plates (4) are arranged in pairs to form an installation space with a side opening. A notch is arranged in the installation space area of ​​the bottom plate (3). The strip-shaped energy-absorbing soft steel (5) is confined in the installation space. The upper end of the strip-shaped energy-absorbing soft steel (5) is connected to the top plate (2) by a high-strength bolt (7), and the lower end is connected to the embedded plate (6) by a high-strength bolt (7).

2. The self-resetting energy-absorbing square steel column base according to claim 1 is characterized in that: The steel column (1) is a square steel column, and the steel column (1) is symmetrically centered after being combined with the top plate (2) and the bottom plate (3).

3. The self-resetting energy-absorbing square steel column base according to claim 2 is characterized in that: The stiffening rib plate (4) is a vertically arranged rectangular plate, which is perpendicular to the cylindrical surface of the steel column (1) where it is located. The upper end of the stiffening rib plate (4) is welded and fixed to the top plate (2), the side surface is welded and fixed to the steel column (1), and the lower end is welded and fixed to the bottom plate (3).

4. The self-resetting energy-absorbing square steel column base according to claim 3 is characterized in that: The number of strip-shaped energy-absorbing soft steels (5) in the front, rear, left and right directions of the steel column (1) is equal, and multiple strip-shaped energy-absorbing soft steels (5) in the same direction are arranged along a straight line, and the connecting line of multiple strip-shaped energy-absorbing soft steels (5) in the same direction is symmetrical with the steel column (1) as the center.

5. The self-resetting energy-absorbing square steel column base according to claim 4 is characterized in that: The base of the bottom plate (3) is a square plate, a hole matching the steel column (1) is arranged in the middle of the square plate, and notches are arranged in the center of the four sides.

6. The self-resetting energy-absorbing square steel column base according to claim 1 is characterized in that: The strip-shaped energy-absorbing mild steel (5) is a double S-shaped curve.

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