CN211447492U - Toughness steel column - Google Patents

Abstract

The utility model discloses a ductile steel column, which is constructed on a concrete foundation. The main column is arranged vertically, and the bottom surface is connected with the overhanging bottom plate; the bottom of the overhanging bottom plate is connected with the top of the high-strength bearing; The combined disc spring is fixed, and the bottom end is inserted into the concrete foundation to be fixed. The ductile steel column in the utility model has strong stability and a certain self-resetting function.

Description

A ductile steel column

technical field

The utility model relates to the technical field of anti-seismic structure systems, in particular to a ductile steel column.

Background technique

In recent years, recoverable functional structures have become a research hotspot and have attracted much attention. They can not only protect people's lives and property during an earthquake, but also quickly restore the normal use of the structure after a strong earthquake, reducing the repair and reinforcement of damaged structures. cost. Ductile steel columns can reduce structural damage by lifting the column bottom during moderate or large earthquakes. Studies have shown that the rocking of the structure can reduce the seismic action and improve the ductility design requirements of the structure itself, reduce earthquake damage, and save the cost of the structure. Relax the constraints between the structure and the foundation or between the components, so that the contact surface between the structure and the foundation or the components has only the compressive capacity but no tensile capacity, the structure will sway under the action of the earthquake, and the structure will be reset by the pre-compression, forming a self-reset structure.

Therefore, it is an urgent problem for those skilled in the art to develop a ductile steel column with strong stability and a certain self-reset function.

Utility model content

In view of this, the utility model provides a tough steel column with strong stability and a certain self-resetting function.

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

A ductile steel column is constructed on a concrete foundation, comprising: a high-strength bearing, a main column, an overhanging bottom plate, and a high-strength anchor rod;

The bottom end of the high-strength support is inserted into the limiting groove formed on the top surface of the concrete foundation;

The main column is arranged vertically, and the bottom surface is connected with the overhanging bottom plate;

The bottom of the overhanging bottom plate is connected with the top of the high-strength support;

The top end of the high-strength anchor rod passes through the overhanging bottom plate and then is sheathed with a composite composite disc spring for fixation, and the bottom end is inserted into the concrete foundation for fixation.

The beneficial effect of adopting the above technical scheme is that the high-strength bearing of the present invention is lifted during the earthquake, the main column is swayed, and the elastic restoring force of the composite disc spring can effectively reduce the residual deformation of the main column under the action of earthquake, thereby realizing The self-reset function of the main column, at the same time, because the cross-section of the high-strength support is smaller than the cross-sectional size of the main column, the rotation radius of the column foot is effectively reduced, and the impact on the upper structural components and non-structural components is reduced. Improve the stability of the main column.

Preferably, cushioning rubber pads are provided at the bottom and around the limiting groove, and the cushioning rubber pads can buffer the rocking interface during an earthquake.

Preferably, the main column is a steel column or a concrete-filled steel tubular column, and a plurality of transverse stiffening ribs are evenly arranged in the main column, and the transverse stiffening ribs can improve the stability of the main column.

Preferably, a plurality of vertical support plates are vertically arranged between the transverse stiffening rib at the bottommost end of the main column and the overhanging bottom plate, which can improve the structural strength of the main column.

Preferably, a triangular plate stiffening rib is fixed between the top of the overhanging bottom plate and the outer wall of the main column to improve the stability of the connection between the overhanging bottom plate and the main column.

Preferably, an end connecting plate is fixed at the bottom end of the overhanging bottom plate, and a support stiffening rib is fixed between the end connecting plate and the high-strength support, which can improve the stability of the connection between the connecting plate and the high-strength support. sex.

Preferably, both ends of the composite composite disc spring are provided with rigid backing plates, and the rigid backing plates are sleeved on the high-strength anchor rod.

Preferably, the high-strength support is a cylindrical, truncated or prismatic structure made of steel and/or concrete, and the cross-sectional dimension of the lower end of the high-strength support in the direction of rotational deformation is smaller than that of the main column in the corresponding The cross-sectional size of the direction can enhance the anti-seismic effect.

Preferably, the high-strength anchor rods are installed on both sides or around the main column.

A construction and installation method of a ductile steel column, characterized in that it comprises the following steps:

S1, tie the steel bar first, in the support formwork, then pour the concrete foundation, and pre-embed the high-strength bolt in the concrete foundation;

S2. Assemble the main column, the transverse stiffener, the overhanging bottom plate, the vertical support plate, the high-strength support, the triangular plate stiffener, the support stiffener and the end portion The connection board is prefabricated;

S3. Complete the bolt splicing or welding connection of the end connecting plate of the high-strength support and the overhanging bottom plate of the main column in the factory or complete the bolt splicing or welding connection at the construction site, and at the same time complete the bolt splicing connection or welding connection. The support stiffening rib is fixed between the bottom of the end connecting plate and the side wall of the high-strength support, and the triangular plate stiffening rib is fixed on the side wall of the main column and the top of the overhanging bottom plate between;

S4. Lay the buffer rubber pad at the bottom and around the limit groove of the concrete foundation, and complete the connection between the main column and the high-strength support. The lower part of the high-strength support is placed in the In the limit groove, calibrate the position, and fix the main column with temporary support;

S5. Sleeve the rigid backing plate, the composite composite disc spring and bolts on the high-strength bolt located above the overhanging bottom plate in sequence, and tighten the bolts in turn to the composite composite disc springs. The spring applies a certain preload, which is applied in sequence according to the symmetrical position, and calibrated;

S6. After the construction of the upper main structure is completed, the vertical gravity load will cause a certain axial deformation of the high-strength support. According to the designed preload of the composite composite disc spring, the bolts are further tightened to make the composite Combine disc springs to achieve the final design preload.

As can be seen from the above technical solutions, compared with the prior art, the present disclosure provides a ductile steel column, which has the following beneficial effects:

1. The stability and self-recovery ability of the main column in the present utility model are strong. Compared with the existing self-resetting steel columns at present, the present utility model can not only significantly increase the stability of the overall structure through the composite combination of disc springs and high-strength bearings, The turning radius of the structure is reduced, and the self-recovery ability is significantly improved, and the buffer rubber pad arranged at the bottom of the main column can also buffer the rocking interface;

2. In the present utility model, the structure swing is realized by the high-strength support at the bottom, which can effectively reduce the turning radius of the bottom of the main column and reduce the rigidity requirement for the end connecting plate. control.

3. The utility model can be used in important building structures in high-intensity earthquake areas, has strong self-resetting ability, strong structural stability, and is of great significance, and can be widely used in various recoverable functional building structures.

Description of drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description It is only an embodiment of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained according to the provided drawings without creative efforts.

Fig. 1 accompanying drawing is the vertical sectional view of the main column provided by the utility model;

Fig. 2 accompanying drawing is the structural representation of the main column provided by the utility model;

Fig. 3 accompanying drawing is the front view of the main column provided by the utility model;

Figure 4 is a top view of the main column provided by the utility model.

Among them, in the figure,

1-Main column; 2-Transverse stiffener; 3-Extruded bottom plate; 4-High-strength bolt; 5-Vertical support plate; 6-Composite combined disc spring; 7-Support stiffener; 8-Triangular plate stiffener ; 9- end connecting plate; 10- high-strength bearing; 11- bolt; 12- rigid backing plate; 13- limit groove; 14- buffer rubber pad; 15- concrete foundation.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to 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 implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

Example 1:

Referring to Figures 1 to 4, the embodiment of the present utility model discloses a ductile steel column, which is constructed on a concrete foundation 15, including: a high-strength bearing 10, a main column 1, an overhanging base plate 3, and a high-strength anchor rod 4; the bottom end of the high-strength support 10 is inserted into the limiting groove 13 formed on the top surface of the concrete foundation 15; the main column 1 is arranged vertically, and the bottom surface is connected with the overhanging bottom plate 3; The top ends of the high-strength supports 10 are connected; the top end of the high-strength anchor rod 4 passes through the outrigger base plate 3 and then is sheathed with a composite composite disc spring 6 for fixation, and the bottom end is inserted into the concrete foundation 15 for fixation. The high-strength support 10 is made of high-strength steel and concrete. The high-strength support 10 can be a simple steel member or a steel pipe filled with high-strength concrete. The bearing capacity and rigidity are designed to meet the requirements of the superstructure. In addition to placing the high-strength support 10 in the limiting groove 13 of the concrete foundation 15 to limit its lateral sliding, a lateral limiting device can also be fixed on the concrete foundation 15 to restrict the lateral sliding of the high-strength support 10 .

In order to further optimize the above technical solution, cushioning rubber pads 14 are provided at the bottom and the periphery of the limiting groove 13 .

In order to further optimize the above technical solution, the main column 1 is a steel column or a concrete-filled steel tubular column, and a plurality of transverse stiffening ribs 2 are evenly arranged in the main column 1 .

In order to further optimize the above technical solution, a plurality of vertical support plates 5 are vertically arranged between the transverse stiffening rib 2 at the bottommost end of the main column 1 and the overhanging bottom plate 3 . The vertical support plate 5 is aligned with the vertical force bearing member of the high-strength support 10 .

In order to further optimize the above technical solution, a triangular plate stiffening rib 8 is fixed between the top of the overhanging bottom plate 3 and the outer wall of the main column 1 .

In order to further optimize the above technical solution, an end connecting plate 9 is fixed at the bottom end of the overhanging bottom plate 3 , and a support stiffening rib 7 is fixed between the end connecting plate 9 and the high-strength support 10 .

In order to further optimize the above technical solution, both ends of the composite composite disc spring 6 are provided with rigid pads 12 , and the rigid pads 12 are sleeved on the high-strength anchor rod 4 .

In order to further optimize the above technical solution, the high-strength support 10 is a cylindrical, truncated or prismatic structure made of steel and/or concrete, and the cross-sectional dimension of the lower end of the high-strength support 10 is smaller in the rotational deformation direction than the main column 1 Cross-sectional dimension in the corresponding direction.

In order to further optimize the above technical solution, the high-strength bolts 4 are installed on both sides or around the main column 1 .

The main column (ie, ductile steel column) provided in this embodiment is applied to a steel frame structure or a composite structure, and the self-resetting force is provided by the composite composite disc spring 6, and the bottom surface of the high-strength support 10 is used as the rocking interface. Under the action of the load, the bottom of the main column 1 does not lift, and the main structure remains elastic; under the action of a large earthquake, the high-strength bearing 10 is lifted, the main column 1 is swayed, and the elastic restoring force of the composite composite disc spring 6 is effectively reduced. The residual deformation of the main column 1 under the action of the earthquake, so as to realize the self-resetting function of the main column 1. At the same time, since the cross-section of the high-strength support 10 is smaller than the cross-sectional size of the main column 1, the bottom column of the main column 1 is effectively reduced. The turning radius of the foot, reducing the impact on the upper structural and non-structural components. Because the high-strength support 10 can be bolted to the overhanging bottom plate 3 through the end connecting plate 9, it is a detachable connection method, the utility model has a convenient and efficient installation and disassembly function, and the high-strength support after the earthquake can be realized by disassembling and replacing. Replacement of seat 10.

Example 2:

The present embodiment discloses a construction and installation method for a ductile steel column, comprising the following steps:

S1, first bind the steel bars, support the formwork, then pour the concrete foundation 15, and pre-embed the high-strength anchor rod 4 in the concrete foundation 15;

S2, prefabricating the main column 1, the transverse stiffener 2, the overhanging bottom plate 4, the vertical support plate 5, the high-strength support 10, the triangular plate stiffener 8, the support stiffener 7 and the end connecting plate 9;

S3. The end connecting plate 9 of the high-strength bearing 10 and the overhanging bottom plate 4 of the main column 1 are bolted or welded at the factory or bolted or welded at the construction site, and the support stiffeners 7 It is fixed between the bottom of the end connecting plate 9 and the side wall of the high-strength support 10, and the triangular plate stiffener 8 is fixed between the side wall of the main column 1 and the top of the overhanging bottom plate 4;

S4. Lay buffer rubber pads 14 at the bottom and around the limit groove 13 of the concrete foundation 15, and complete the connection between the main column 1 and the high-strength support 10. The lower part of the high-strength support 10 is placed in the limit groove 13, and calibrated position, and fix the main column 1 with temporary supports;

S5. Sleeve the rigid backing plate 12, the composite composite disc spring 6 and the bolts 11 on the high-strength anchor rod 4 located above the overhanging bottom plate 4 in turn, and tighten the bolts 11 in turn to apply a certain preload to the composite composite disc spring 6. Pressure, applied in sequence according to the symmetrical position, and calibrated;

S6. After the construction of the upper main structure is completed, the vertical gravity load will cause a certain axial deformation of the high-strength bearing 10. According to the designed pre-pressure of the composite composite disc spring 6, the bolts 11 are further tightened to make the composite composite disc spring 6 The final design preload is reached.

The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same and similar parts between the various embodiments can be referred to each other. As for the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant part can be referred to the description of the method.

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 readily apparent to those skilled in the art, and the generic principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Thus, the present invention is not intended to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (9)

1. A ductile steel column, characterized in that it is constructed on a concrete foundation (15), comprising: a high-strength bearing (10), a main column (1), an overhanging base plate (3), a high-strength bolt (4) ); The bottom end of the high-strength support (10) is inserted into the limiting groove (13) formed on the top surface of the concrete foundation (15); The main column (1) is arranged vertically, and the bottom surface is connected with the overhanging bottom plate (3); The bottom of the overhanging bottom plate (3) is connected with the top end of the high-strength support (10); The top end of the high-strength anchor rod (4) passes through the overhanging bottom plate (3), and then is sheathed with a composite composite disc spring (6) for fixation, and the bottom end is inserted into the concrete foundation (15) for fixation. 2 . The ductile steel column according to claim 1 , wherein the bottom and the periphery of the limiting groove ( 13 ) are provided with buffer rubber pads ( 14 ). 3 . 3. A ductile steel column according to claim 2, characterized in that the main column (1) is a steel column or a concrete-filled steel tubular column, and a plurality of transverse stiffeners are evenly arranged in the main column (1) Ribs (2). 4. A ductile steel column according to claim 3, characterized in that, between the transverse stiffening rib (2) at the bottommost end of the main column (1) and the overhanging bottom plate (3) A plurality of vertical support plates (5) are directly arranged. 5. A ductile steel column according to any one of claims 1-4, characterized in that a triangular plate stiffener is fixed between the top of the overhanging bottom plate (3) and the outer wall of the main column (1). Ribs (8). 6. A ductile steel column according to claim 5, characterized in that an end connecting plate (9) is fixed at the bottom end of the overhanging bottom plate (3), and the end connecting plate (9) is connected with A support stiffening rib (7) is fixed between the high-strength supports (10). 7. A ductile steel column according to claim 6, characterized in that both ends of the composite composite disc spring (6) are provided with rigid pads (12), and the rigid pads (12) It is sleeved on the high-strength anchor rod (4). 8. A ductile steel column according to any one of claims 1-4, 6 or 7, wherein the high-strength support (10) is a cylindrical or truncated cone made of steel and/or concrete Or a prismatic structure, the cross-sectional dimension of the lower end of the high-strength support (10) in the direction of rotational deformation is smaller than the cross-sectional dimension of the main column (1) in the corresponding direction. 9 . The ductile steel column according to claim 8 , wherein the high-strength bolts ( 4 ) are installed on both sides or around the main column ( 1 ). 10 .

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