CN108951908B - Frame shear wall structure with swing energy dissipation column - Google Patents

Abstract

The invention discloses a frame shear wall structure with swing energy dissipation columns. One end of the frame beam is fixed on the shear wall, the upper end of the frame column is fixedly connected with the other end of the frame beam, and the reinforced concrete pier is in the shape of a groove. Structure, the lower end of the frame column is inserted into the reinforced concrete pier, the two energy dissipation members are respectively located in the reinforced concrete pier, and the two energy dissipation members are respectively located on both sides of the frame column; the second screws pass through the reinforced concrete pier in turn. The second end plate of the side wall, the first end plate and the flange of the frame column, the end of the steel plate is fixed on the flange of the frame column, one end of each first screw is provided with a first limiter, and the end of each first screw is After the other end passes through the bottom of the reinforced concrete pier and the steel plate, a second limiting member is arranged, a first spring and a second spring are arranged on each first screw rod, and a third spring is arranged on each second screw rod. Reset effect, and it is more convenient to replace after earthquake damage.

Description

A frame shear wall structure with swaying energy dissipating columns

technical field

The invention belongs to the field of earthquake resistance and shock absorption of civil engineering, and relates to a frame shear wall structure with swing energy dissipation columns.

Background technique

The traditional seismic concept is generally to enhance the seismic capacity of the structure by increasing the stiffness, strength and ductility of the structure, but this approach usually leads to serious damage to the structure after the earthquake, and it is difficult to repair. In recent years, the rocking structure system has become one of the important research directions in the field of earthquake engineering because it can significantly reduce the post-earthquake damage of the structure. At present, there are various implementation methods such as the swing column system, the swing wall system, the combination of the swing structure and the energy dissipation and shock absorption device.

The rocking system is a self-resetting passive seismic system that can rotate around its bottom. The rocking structure system does not use the deformation of the structure itself to dissipate the seismic energy, but relaxes the constraints of the structural system to form the rocking components. The deformation tends to be consistent, and the deformation is concentrated on the rocking interface, and dampers are set in these parts to dissipate energy. The existing research results show that the rocking wall system can make the deformation of each layer of the structure tend to be uniform, can effectively control the concentration of structural deformation, and can exert the overall seismic and energy dissipation capacity of the structure. The rocking wall system has been practically applied to the frame structure, and has shown a good seismic effect.

The swinging column system also has the self-resetting ability. At present, the self-resetting ability of the swinging column system is mainly provided by the prestressed unbonded steel strand, which is not only difficult to construct, but also the self-resetting effect is not obvious. In addition, the current rocker column system is not easy to replace after earthquake damage.

SUMMARY OF THE INVENTION

The purpose of the present invention is to overcome the above-mentioned shortcomings of the prior art, and to provide a frame shear wall structure with swaying energy dissipating columns, which has a self-reset effect and is more convenient to replace after earthquake damage.

In order to achieve the above purpose, the frame shear wall structure with swing energy dissipation columns of the present invention includes swing energy dissipation columns, frame beams, shear walls and two energy dissipation components, wherein the swing energy dissipation columns include frame columns. and reinforced concrete piers;

One end of the frame beam is fixed on the shear wall, the upper end of the frame column is fixedly connected with the other end of the frame beam, the reinforced concrete pier is a groove-shaped structure, the lower end of the frame column is inserted into the reinforced concrete pier, and the two energy dissipation components are It is located in the reinforced concrete pier, and the two energy dissipation members are located on both sides of the frame column;

Both of the two energy-consuming components include a steel plate, a first end plate, a second end plate, a number of first screws and a number of second screws. The flange of the plate and the frame column, the end of the steel plate is fixed on the flange of the frame column, one end of each first screw rod is provided with a first stopper, and the other end of each first screw rod passes through the bottom of the reinforced concrete pier and the flange. A second limiting member is arranged behind the steel plate, each first screw is provided with a first spring and a second spring, and each second screw is provided with a third spring, wherein the first spring is located between the first limiting member and the reinforced concrete Between the piers, the second spring is located between the second limiting member and the steel plate, and the third spring is located between the first end plate and the second end plate.

Each second screw is divided into two groups, wherein the first group of second screws is located directly above the second group of second screws.

The energy dissipation member also includes two folded plates, wherein both ends of the two folded plates are fixed on the first end plate and the second end plate respectively, and the two folded plates are located in the first group of the second screw and the second group of Between the second screws, and the two folded plates are located on both sides of the frame column web.

Corrugated steel plates are arranged between two adjacent second screws in the same group of second screws, wherein one end of the corrugated steel plate is fixed on the first end plate, and the other end of the corrugated steel plate is fixed on the second end plate.

The steel plate is fixed on the flange of the frame column through the angle steel.

The first limiting member and the second limiting member are both nuts.

The bottom of the reinforced concrete pier is provided with a first groove, the side of the reinforced concrete pier is provided with a second groove, the first stopper and the first spring are located in the first groove, and the end of the second screw rod is located in the second groove. in the slot.

Both ends of the first end plate are provided with limit plates, the limit plates and the first end plate form a concave component, and the concave component is fastened to the side wall of the reinforced concrete pier.

The first spring, the second spring and the third spring are all SMA shape memory alloy springs.

The bending angle of the corrugated steel plate is 135o, and it has a wavy structure.

The present invention has the following beneficial effects:

The frame shear wall structure with the swinging energy dissipation column of the present invention adopts the swinging energy dissipation column to bear the main energy consumption during the specific operation. The advantages are that in the case of the same size, the energy that can be absorbed is larger, and the anti-seismic and shock-absorbing effects are better. In addition, the present invention adopts an assembled structure, and the parts are connected by screws, and the damaged parts can be damaged many times after the earthquake. Replacement, to achieve the purpose of easy connection replacement and rapid recovery of seismic function. In addition, the present invention uses the spring to consume the seismic energy and make it reset, and has an excellent automatic reset effect.

Further, under the action of wind load or small earthquake, the folded plate and corrugated steel plate play a role to ensure the lateral rigidity of the structural column. When a medium or large earthquake occurs, one end of the frame column can be lifted to make the structure as a whole occur. Swing, so as to prevent the local deformation of the structure from being too large. At this time, the springs, folded plates and corrugated steel plates come into play, so that the entire structural column is always in an elastic state during the earthquake, so that the structure can continue to operate.

Description of drawings

Fig. 1 is the structural representation of the present invention;

2 is a schematic structural diagram of an energy-consuming rocking column in the present invention;

3 is a front view of an energy-consuming rocking column in the present invention;

Fig. 4 is the right side view of the energy-consuming rocking column in the present invention;

Fig. 5 is the top view of the energy-consuming rocking column in the present invention;

6 is a positional relationship diagram of the corrugated steel plate 8, the folded plate 7, the first end plate 5 and the second end plate 6 in the present invention;

Fig. 7 is the positional relationship diagram of angle steel 15 and steel plate 13 in the present invention;

FIG. 8 is a positional relationship diagram of the steel plate 13 and the second spring 12 in the present invention.

Among them, 1 is the shear wall, 2 is the frame beam, 3 is the frame column, 4 is the reinforced concrete pier, 5 is the first end plate, 6 is the second end plate, 7 is the folded plate, 8 is the corrugated steel plate, and 9 is the The first screw, 10 is the second screw, 11 is the first spring, 12 is the second spring, 13 is the steel plate, 14 is the third spring, and 15 is the angle steel.

Detailed ways

Below in conjunction with accompanying drawing, the present invention is described in further detail:

Referring to FIGS. 1 to 8 , the frame shear wall structure with swing energy dissipation columns according to the present invention includes swing energy dissipation columns, frame beams 2 , shear walls 1 and two energy dissipation components, wherein the swing energy dissipation The column includes a frame column 3 and a reinforced concrete pier 4; one end of the frame beam 2 is fixed on the shear wall 1, the upper end of the frame column 3 is fixedly connected with the other end of the frame beam 2, the reinforced concrete pier 4 is a groove-shaped structure, and the frame The lower end of the column 3 is inserted into the reinforced concrete pier 4, the two energy dissipation members are respectively located in the reinforced concrete pier 4, and the two energy dissipation members are respectively located on both sides of the frame column 3; The first end plate 5 , the second end plate 6 , several first screws 9 and several second screws 10 , and each second screw 10 passes through the second end plate 6 and the first end plate 5 of the side wall of the reinforced concrete pier 4 in sequence and the flange of the frame column 3, the end of the steel plate 13 is fixed on the flange of the frame column 3, one end of each first screw 9 is provided with a first stopper, and the other end of each first screw 9 passes through the reinforced concrete The bottom of the pier 4 and the back of the steel plate 13 are provided with a second limiting member, each of the first screws 9 is provided with a first spring 11 and a second spring 12, and each of the second screws 10 is provided with a third spring 14. A spring 11 is located between the first limiting member and the reinforced concrete pier 4 , the second spring 12 is located between the second limiting member and the steel plate 13 , and the third spring 14 is located between the first end plate 5 and the second end plate 6 Among them, the first limiting member and the second limiting member are both nuts; the steel plate 13 is fixed on the flange of the frame column 3 through the angle steel 15 .

Each of the second screws 10 is divided into two groups, wherein the first group of the second screws 10 is located directly above the second group of the second screws 10 . The energy-consuming member also includes two folded plates 7, wherein both ends of the two folded plates 7 are respectively fixed on the first end plate 5 and the second end plate 6, and the two folded plates 7 are located in the first group of the second end plate 7. Between the screw 10 and the second group of second screws 10, and the two folded plates 7 are located on both sides of the web of the frame column 3; waveforms are set between two adjacent second screws 10 in the same group of second screws 10 The steel plate 8, wherein one end of the corrugated steel plate 8 is fixed on the first end plate 5, and the other end of the corrugated steel plate 8 is fixed on the second end plate 6.

The bottom of the reinforced concrete pier 4 is provided with a first groove, the side of the reinforced concrete pier 4 is provided with a second groove, the first limiting member and the first spring 11 are located in the first groove, and the end of the second screw 10 It is located in the second groove; both ends of the first end plate 5 are provided with limit plates, and the limit plates and the first end plate 5 form a concave member, and the concave member is buckled on the side wall of the reinforced concrete pier 4 .

The first spring 11 , the second spring 12 and the third spring 14 are all SMA shape memory alloy springs; the bending angle of the corrugated steel plate 8 is 135° and has a wave-shaped structure.

The end of each second screw 10 is sleeved with a nut and a circular backing plate, and a circular backing plate is provided between the first spring 11 and the nut and between the second spring 12 and the nut.

All components of the rocking energy dissipation column are connected by bolts or screws. Under the action of wind load or small shock, the folded plate 7 and the corrugated steel plate 8 play a role to ensure the lateral stiffness of the structural column. After the earthquake occurs, the second spring 12 and the third spring 14 first generate elastic deformation and consume energy to ensure that the structure itself is not damaged, and can be disassembled and replaced after the earthquake.

In actual operation, the bearing capacity of the reinforced concrete pier 4 is reduced due to the excavation of a certain space. The lost bearing capacity can be compensated by reducing the spacing of the horizontally distributed reinforcement bars in the reinforced concrete pier 4 within the parallel height range.

Claims (7)

1. A frame shear wall structure with a swinging energy dissipation column is characterized in that, comprising a swinging energy dissipation column, a frame beam (2), a shear wall (1) and two energy dissipation components, wherein the swinging energy dissipation Energy columns include frame columns (3) and reinforced concrete piers (4); One end of the frame beam (2) is fixed on the shear wall (1), the upper end of the frame column (3) is fixedly connected to the other end of the frame beam (2), the reinforced concrete pier (4) is a groove-shaped structure, and the frame column The lower end of (3) is inserted into the reinforced concrete pier (4), the two energy dissipation members are respectively located in the reinforced concrete pier (4), and the two energy dissipation members are respectively located on both sides of the frame column (3); Both of the two energy-consuming components include a steel plate (13), a first end plate (5), a second end plate (6), a plurality of first screws (9) and a plurality of second screws (10), each second screw (10) ) pass through the second end plate (6), the first end plate (5) and the flange of the frame column (3) of the side wall of the reinforced concrete pier (4) in turn, and the end of the steel plate (13) is fixed to the frame column ( 3) On the flange of each first screw (9), one end of each first screw (9) is provided with a first limiting member, and the other end of each first screw (9) passes through the bottom of the reinforced concrete pier (4) and after the steel plate (13). A second limiting member is provided, each first screw (9) is provided with a first spring (11) and a second spring (12), and each second screw (10) is provided with a third spring (14), wherein , the first spring (11) is located between the first stopper and the reinforced concrete pier (4), the second spring (12) is located between the second stopper and the steel plate (13), and the third spring (14) is located between the second stopper and the steel plate (13) between the first end plate (5) and the second end plate (6); Each second screw (10) is divided into two groups, wherein the first group of second screws (10) is located directly above the second group of second screws (10); The energy dissipation member further comprises two folded plates (7), wherein both ends of the two folded plates (7) are respectively fixed on the first end plate (5) and the second end plate (6), and the two folded plates (7) are respectively fixed on the first end plate (5) and the second end plate (6). (7) Both are located between the first group of second screws (10) and the second group of second screws (10), and the two folded plates (7) are located on both sides of the web of the frame column (3); Corrugated steel plates (8) are arranged between two adjacent second screws (10) in the same group of second screws (10), wherein one end of the corrugated steel plates (8) is fixed on the first end plate (5), The other end of the corrugated steel plate (8) is fixed on the second end plate (6). 2 . The frame shear wall structure with swaying energy dissipation columns according to claim 1 , wherein the steel plate ( 13 ) is fixed on the flange of the frame column ( 3 ) through the angle steel ( 15 ). 3 . 3 . The frame shear wall structure with swaying energy dissipation columns according to claim 1 , wherein the first limiting member and the second limiting member are nuts. 4 . 4. The frame shear wall structure with a swinging energy dissipation column according to claim 1, wherein the bottom of the reinforced concrete pier (4) is provided with a first groove, and the side of the reinforced concrete pier (4) is provided with There is a second groove, the first limiting member and the first spring (11) are located in the first groove, and the end of the second screw rod (10) is located in the second groove. 5. The frame shear wall structure with swaying energy dissipating columns according to claim 1, wherein the first end plate (5) is provided with limit plates at both ends, and the limit plates are connected to the first end plate (5). 5) A concave member is formed, and the concave member is fastened to the side wall of the reinforced concrete pier (4). 6. The frame shear wall structure with a swinging energy dissipation column according to claim 1, wherein the first spring (11), the second spring (12) and the third spring (14) are all SMA shapes Memory alloy spring. 7 . The frame shear wall structure with swaying energy dissipation columns according to claim 1 , wherein the bending angle of the corrugated steel plate ( 8 ) is 135° and has a wave-shaped structure. 8 .

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