KR20210112568A - Wire damping apparatus for lintel - Google Patents

Abstract

The present invention relates to a wire damping apparatus for a lintel which positions a damping unit with a damping wire of a ring shape in a lintel beam between reinforced concrete shear walls between a pair of anchors to secure excellent seismic performance and have a uniform damping force in a parallel shear wall system to realize stable damping performance, and effectively absorbs multi-axis vibration and impacts for a horizontal load to secure structural stability. The wire damping apparatus for a lintel comprises a pair of anchors provided to be separated from each other and a damping unit provided between the anchors to be provided in a lintel beam between reinforced concrete shear walls. The damping unit includes a wire damper consisting of a pair of fixing blocks provided to be separated from each other and having a plurality of penetration holes arranged in a vertical direction, and a damping wire penetrating the penetration holes of the pair of fixing blocks in a ring shape to connect the pair of fixing blocks.

Description

Wire damping apparatus for lintel

The present invention secures excellent seismic performance in a parallel shear wall system by locating a damping part provided with a ring-shaped damping wire between a pair of anchorages in a lintel between the shear walls of a reinforced concrete structure, and provides stable damping performance with uniform damping force It is about a lintel-type wire vibration damping device that can achieve structural stability by effectively absorbing multi-axis vibrations and shocks for horizontal loads.

High-rise buildings should be designed to ensure the safety of structures against horizontal loads such as earthquakes and winds as well as gravity loads.

For this purpose, various lateral force resistance systems are used in high-rise buildings. Among them, a shear wall structure that resists lateral force by a shear wall having high rigidity of the building core is used the most.

The shear wall is a structural wall designed to resist the horizontal force acting parallel to the surface of the wall, and also serves as a bearing wall to support the vertical load.

This shear wall is fixed to the upper part of the foundation and behaves as a cantilever structure. In this case, when it is difficult to control the horizontal displacement with only a single shear wall, a coupled shear wall structure that can additionally secure horizontal rigidity by connecting a plurality of independent shear walls to each other is used.

In this parallel shear wall structure, neighboring shear walls are connected to each other by lintel beams.

In a general lintel beam system in which a lintel beam and a shear wall are integrally formed, shear failure may occur in the central part when a large lateral force is applied due to a strong earthquake or the like.

However, since the lintel beam is classified as a primary member constituting the main structural member, the tolerance standard is strictly applied. Accordingly, as in Korean Patent Laid-Open Publication No. 10-2016-0082643, a detail for reinforcing the strength and rigidity of a lintel beam by increasing the amount of reinforcing bar has been used a lot. However, this prior art cannot absorb seismic energy because the ductility of the member is lowered due to the increase in the amount of reinforcing bars, and this greatly increases the shear force and the overturning moment of the bottom surface of the shear wall as a whole.

Accordingly, in the prior Patent Registration No. 10-1186448, a damping plate in the form of a dog bone was used to absorb plastic deformation. However, the registration technique is complicated in design because the stiffness of the damper in the x, y, and z axes is different, and a damping effect for multi-axis excitation cannot be expected. In addition, the fatigue strength of the damping plate is weak, so there is a limit to the durability life.

In order to solve the above problems, an object of the present invention is to provide a lintel-type wire vibration damping device that can secure excellent seismic performance in a parallel shear wall system and realize stable vibration damping performance against earthquakes with a uniform damping force.

An object of the present invention is to provide a lintel-type wire vibration damping device capable of securing structural stability by effectively absorbing multiaxial vibrations and shocks for horizontal loads such as earthquakes.

The present invention according to a preferred embodiment relates to a lintel-type wire vibration damping device comprising a pair of anchorages provided to be spaced apart from each other and a damping part provided between the anchorages and provided in a lintel between the shear walls of a reinforced concrete structure, the The damping part is provided to be spaced apart from each other, and a pair of fixed blocks having a plurality of through-holes disposed in the vertical direction, respectively, and a damping wire connecting the pair of fixed blocks by penetrating the through-holes of the pair of fixed blocks in a ring shape It provides a lintel-type wire damping device, characterized in that it comprises a wire damper consisting of.

The present invention according to another preferred embodiment provides a lintel-type wire vibration damping device, characterized in that the damping wire sequentially penetrates through a plurality of through-holes disposed in the vertical direction and is spirally formed.

The present invention according to another preferred embodiment provides a lintel-type wire vibration damping device, wherein the damping unit is provided with at least two or more of the wire dampers and is connected in series with each other.

The present invention according to another preferred embodiment provides a lintel-type wire damping device characterized in that the adjacent wire dampers are connected by coupling the fixing blocks to each other.

In the present invention according to another preferred embodiment, a T-shaped shear key is protruded from the front surface of one fixed block among the fixed blocks connecting the neighboring wire dampers, and the T-shaped shear key is inserted into the front surface of the corresponding other fixed block. It provides a lintel-type wire vibration damping device, characterized in that a fitting groove having a shape corresponding to the shear key is formed.

The present invention according to another preferred embodiment is a lintel-type wire vibration damping device characterized in that the coupling protrusions of the L-shaped cross-section are respectively protruded from the front surface of the fixing blocks connecting the adjacent wire dampers, and the coupling protrusions are coupled to engage each other. provides

The present invention according to another preferred embodiment provides a lintel-type wire vibration damping device, characterized in that a control tube is provided between the through hole and the damping wire.

According to the present invention as described above, there are the following effects.

First, it is provided in the lintel beam between the shear walls of the reinforced concrete structure, it is possible to provide a lintel-type wire vibration damping device comprising a damping part provided between a pair of anchorages. In particular, since the damping part is configured to include a wire damper connecting a pair of spaced apart fixed blocks with a damping wire penetrating in a ring shape, the damping force and ductility can be greatly increased by the excellent ductility of the damping wire.

Accordingly, in a parallel shear wall system, the shear wall and the vibration damping device efficiently share the seismic load to secure excellent seismic performance, and it is economical because the cross section of structural members can be reduced compared to the seismic design.

Second, since the damping wire is circularly arranged in a ring shape, it is possible to sufficiently secure the damping effect for multiaxial excitation unlike the existing damping device.

Third, various damping ratios can be realized by adjusting the number or diameter of damping wires, and stable vibration damping performance can be realized by securing a uniform damping force.

1 is an elevational cross-sectional view showing a state in which the present invention lintel type wire vibration damping apparatus is installed.
Fig. 2 is a perspective view showing a lintel-shaped wire vibration damping apparatus of the present invention.
3 is a perspective view showing an embodiment of a wire damper;
Figure 4 is a perspective view showing the coupling relationship of the split-type fixed block.
5 is a perspective view showing a wire damper provided with a spiral damping wire.
6 is a perspective view showing an embodiment in which a plurality of wire dampers are connected in series;
7 is a perspective view showing a coupling state of a wire damper connected in series according to an embodiment.
Figure 8 is a perspective view showing the coupling relationship of the fixed block by the T-shaped shear key.
9 is a perspective view showing a coupling state of a wire damper connected in series according to another embodiment.
10 is a perspective view showing the coupling relationship of the fixing block by the coupling protrusion.
Fig. 11 is a perspective view showing an embodiment of an adjustment tube;
12 is a perspective view showing a coupling relationship between the control tube and the damping wire.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings and preferred embodiments.

1 is an elevational cross-sectional view showing a state in which the lintel-type wire vibration damping apparatus of the present invention is installed, FIG. 2 is a perspective view showing the lintel-type wire vibration damping apparatus of the present invention, and FIG. 3 is a perspective view showing an embodiment of the wire damper. And Figure 4 is a perspective view showing the coupling relationship of the split type fixed block.

1, 2, etc., the present invention lintel-shaped wire vibration damping device is composed of a pair of anchorages (4) provided to be spaced apart from each other and a damping unit (5) provided between the anchorages (4). It relates to a lintel-shaped wire vibration damping device (3) provided in a lintel beam (2) between the shear walls (1) of a reinforced concrete structure, wherein the damping part (5) is provided to be spaced apart from each other, and a plurality of vertically arranged A damping wire connecting a pair of fixing blocks 51 having a through hole 511 formed thereon and a pair of fixing blocks 51 passing through the through holes 511 of the pair of fixing blocks 51 in a ring shape. It is characterized in that it is configured to include a wire damper (50) consisting of (52).

The present invention secures excellent seismic performance in a parallel shear wall system, has a uniform damping force, can stably implement seismic damping performance against earthquakes, and effectively absorbs multi-axis vibration and shock for horizontal loads such as earthquakes to ensure structural stability. It is to provide a lintel-shaped wire vibration damping device that can be

The present invention lintel-type wire vibration damping apparatus is installed in the lintel beam (2) which connects between the reinforced concrete shear walls (1) constructed to be spaced apart from each other to form a parallel shear wall system.

Therefore, unlike the existing seismic design technique in which both columns and shear walls bear the seismic load, the shear wall 1 and the vibration damping device 3 efficiently share the seismic load. can be reduced, which is economical and efficient.

The lintel-shaped wire vibration damping device 3 includes a pair of anchorages 4 spaced apart from each other and a damping unit 5 provided between the anchorages 4 .

That is, the vibration damping device 3 is provided with anchoring holes 4 on both sides of the central damping part 5 .

The anchorage (4) is fixed to the end of the damping part (5).

The anchorage hole (4) is located in the lintel beam (2) and is coupled to the anchorage beam (41) which transmits the load to the damping part (5) and the anchorage reinforcing bar (42) which is coupled to the anchorage beam (41) and fixed in the shear wall (1). ) can be configured.

The settlement beam 41 can be configured as a cheolgolbo.

The damping part 5 absorbs energy from the lintel 2 by damping force and ductility.

As shown in FIGS. 2 and 3 , the damping unit 5 includes a wire damper 50 including a pair of fixing blocks 51 and a damping wire 52 .

The pair of fixing blocks 51 are spaced apart from each other, and the pair of fixing blocks 51 are interconnected by a ring-shaped damping wire 52 .

To this end, a through hole 511 through which the damping wire 52 passes in the width direction is formed in each fixing block 51 .

A plurality of the through holes 511 are formed to be spaced apart from each other in the vertical direction of the fixing block 51 .

It is possible to couple the anchorage beam 41 of the anchorage hole 4 to the rear surface of the fixing block 51 .

The damping wire 52 passes through the through hole 511 of the pair of fixing blocks 51 and may be formed of a steel wire or a stranded wire.

By utilizing the excellent ductility of the damping wire 52 as a damper, the damping force and ductility of the vibration damping device 3 can be greatly increased.

Energy is dissipated by shear or tensile deformation of the damping wire 52 when the relative displacement of the adjacent fixed blocks 51 occurs.

Since the inside of the ring-shaped damping wire 52 is filled with concrete, excessive displacement of the damping wire 52 can be controlled by the concrete inside.

In addition, since the concrete inside the damping wire 52 is constrained by the damping wire 52, the strength and ductility of the concrete are greatly increased.

In addition, since the damping wire 52 is circularly arranged in a ring shape, it is possible to secure a damping effect for multi-axis excitation unlike a conventional damping device.

Unlike the case in which it is difficult to change the damping ratio using the conventional damping plate, in the present invention, various damping ratios can be realized by adjusting the number or diameter of the damping wires 52 .

In addition, since the conventional damping plate may cause interfacial separation between the contact surfaces with concrete, a separate shear connection material is required for integration. In contrast, in the present invention, since the damping wires 52 provided in a plurality of rows are each buried in the concrete, interfacial separation does not occur, and the integrity with the concrete is excellent.

As shown in FIG. 4 , the fixing block 51 is divided into front and rear to facilitate the coupling of the fixing block 51 and the damping wire 52 when the damping unit 5 is manufactured, so that the first unit 51 ′). and a second unit 51".

Semicircular grooves are formed on the bonding surfaces of the first unit 51' and the second unit 51" so that they correspond to each other, so that a through hole is formed when the first unit 51' and the second unit 51" are combined. (511) can be configured to form.

The first unit 51' and the second unit 51" can be coupled to each other by bolts, welding, or the like.

5 is a perspective view showing a wire damper provided with a spiral damping wire.

As shown in FIG. 5 , the damping wire 52 may be spirally formed to sequentially penetrate a plurality of through-holes 511 disposed in the vertical direction.

The damping wire 52 may be configured as a single closed ring member, or may be configured in a continuous spiral shape as shown in FIG. 5 .

Since the damping wire 52 in the form of a spiral reinforcing bar continuously restrains the deep concrete inside, the concrete restraint effect is excellent and the ductility ability is more excellent.

6 is a perspective view illustrating an embodiment in which a plurality of wire dampers are connected in series.

As shown in FIG. 6 , the damping unit 5 may include at least two wire dampers 50a and 50b and are connected in series to each other.

When the length of the lintel 2 is long or the allowable displacement or dissipated energy is large, the distance between the fixing blocks 51 may be increased and the length of the damping wire 52 may be formed to be longer, but the length of the damping wire 2 is excessive. When it is too long, it is difficult to expect energy dissipation due to shear deformation or axial deformation (tensile and compression) as only bending deformation occurs mainly in the damping wire 2 .

Accordingly, by connecting the plurality of wire dampers 50a and 50b in series, the allowable displacement of the entire vibration damping device 3 can be increased while minimizing the length of the damping wires 52a and 52b.

Accordingly, the ductility and damping force of the vibration damping device 3 can be maximized.

The fixing block 51 connecting the wire dampers 50a and 50b between the adjacent wire dampers 50a and 50b may be integrally formed.

That is, the damping wires 52a and 52b of the left and right wire dampers 50a and 50b can be connected to one fixed block 51 located in the middle.

To this end, one side of the fixing blocks 51a and 51b facing the wire dampers 50a and 50b may be connected to each other and disposed in series.

In some cases, the fixing blocks 51a and 51b connecting the adjacent wire dampers 50a and 50b may be integrally formed.

7 is a perspective view illustrating a coupling state of a wire damper connected in series according to an embodiment.

7, the adjacent wire dampers (50a, 50b) can be connected by coupling the fixing blocks (51a, 51b) to each other.

As shown in FIG. 6 , the adjacent wire dampers 50a and 50b share the fixed blocks 51a and 51b of the connected side and can be connected in series, but as shown in FIG. 7 , each of the wire dampers 50a and 50b may be separately provided and the fixing blocks 51a and 51b of the adjacent wire dampers 50a and 50b may be connected to each other by coupling.

Accordingly, it is possible to connect a desired number of wire dampers 50a and 50b in series in consideration of the size of the lintel 2, the size of the horizontal load, and the like.

The adjacent fixing blocks 51a and 51b can be joined by bolts, welding, or the like.

8 is a perspective view showing the coupling relationship of the fixed block by the T-shaped shear key.

7 and 8, a T-shaped shear key 512 is formed protruding from the front of the fixed block 51a on one side of the fixed blocks 51a and 51b connecting the neighboring wire dampers 50a and 50b. and a fitting groove 513 having a shape corresponding to the T-shaped shear key 512 may be formed on the front surface of the corresponding other side of the fixing block 51b so that the T-shaped shear key 512 is inserted.

By combining the T-shaped shear key 512 and the fitting groove 513, the adjacent wire dampers 50a and 50b may be connected.

A T-shaped shear key 512 is protruded from one side of the fixing block 51a, and a T-shaped fitting groove 513 corresponding to the shape of the T-shaped shear key 512 is formed in the other fixing block 51b to fit them together. Can be combined and fixed.

In this case, when deformation occurs in the lintel beam 2 due to a horizontal load, the T-shaped shear key 512 slides inside the fitting groove 513 to further dissipate energy by frictional force.

The fitting groove 513 should be formed so as not to interfere with the through hole 511 of the fixing block 51 .

9 is a perspective view illustrating a coupling state of a wire damper connected in series according to another embodiment, and FIG. 10 is a perspective view showing a coupling relationship of a fixing block by a coupling protrusion.

As shown in FIGS. 9 and 10 , coupling protrusions 514a and 514b of L-shaped cross-section are formed protruding from the front surfaces of the fixing blocks 51a and 51b connecting the adjacent wire dampers 50a and 50b, respectively. The coupling protrusions 514a and 514b may be coupled to engage each other.

For coupling of the adjacent fixing blocks (51a, 51b), both fixing blocks (51a, 51b) may form coupling protrusions (514a, 514b) of L-shaped cross-section, respectively, on the surfaces facing each other. Accordingly, it is possible to use the fixing blocks 51a and 51b having the same shape, so that manufacturing and management are easy.

As in the above-described T-shaped shear key 512, energy dissipation is possible by frictional force during vertical sliding movement between the coupling protrusions 514a and 514b.

In addition, the coupling protrusions 514a and 514b of the L-shaped cross section are capable of additional energy dissipation by the deformation of the coupling protrusions 514a and 514b itself.

A locking protrusion 515 may be formed to protrude inside the end portions of the coupling protrusions 514a and 514b to prevent the out-of-plane direction departure.

11 is a perspective view illustrating an embodiment of an adjustment tube, and FIG. 12 is a perspective view illustrating a coupling relationship between the adjustment tube and the damping wire.

11 and 12 , a control tube 53 may be provided between the through hole 511 and the damping wire 52 .

In the present invention, it is possible to implement various damping ratios by adjusting the number or diameter of the damping wires 52 .

Therefore, the diameter of the through hole 511 is larger than the diameter of the damping wire 52 so that the damping wire 52 of various diameters can be used in the fixed block 51 of a single standard, and the through hole 511 and the damping wire are formed. The adjustment tube (53) can be filled in the clearance between (52).

In particular, by using the control tube 53 having the same inner diameter as the diameter of the through hole 511, it can be configured to apply the damping wire 52 of various diameters to the through hole 511 of the same diameter.

The control tube 53 is preferably formed of a hard elastic member to support the damping wire 52 to absorb vibration. To this end, the control tube 53 may be configured using an earthquake-resistant rubber such as polyamide, polyester, polycarbonate, polyether, or polyurethane.

At both ends of the control tube 53 , flanges 531 that are hooked on both sides of the fixing block 51 to prevent the control tube 53 from being separated may be formed to protrude. In this case, the fixing block 51 may be formed separately into a first unit 51 ′ and a second unit 51 ″ in order to couple the control tube 53 into the through hole 511 .

1: Shear wall 2: Lining beam
3: vibration damper 4: anchorage
41: settlement information 42: settlement rebar
5: damping part 50, 50a, 50b: wire damper
51, 51a, 51b: fixed block 51': first unit
51": second unit 511: through hole
512: T-shaped shear key 513: fitting groove
514a, 514b: coupling protrusion 515: locking jaw
52, 52a, 52b: damping wire 53: control tube
531: flange

Claims (7)

A lintel type provided in the lintel 2 between the shear wall 1 of the reinforced concrete structure composed of a pair of anchorages 4 provided to be spaced apart from each other and a damping part 5 provided between the anchorages 4 It relates to a wire damping device (3),
The damping unit 5 is provided to be spaced apart from each other and includes a pair of fixing blocks 51 having a plurality of through holes 511 arranged in the vertical direction, respectively, and through holes of the pair of fixing blocks 51 ( A lintel-type wire damping device comprising a wire damper (50) composed of a damping wire (52) connecting a pair of fixing blocks (51) by penetrating 511) in a ring shape.
In claim 1,
The damping wire (52) is a lintel type wire vibration damping apparatus, characterized in that it is spirally formed by sequentially passing through a plurality of through holes (511) arranged in the vertical direction.
In claim 1,
The damping unit (5) is provided with at least two or more of the wire dampers (50a, 50b), and is connected in series with each other.
In claim 3,
Neighboring wire dampers (50a, 50b) are connected to each other by coupling the fixing blocks (51a, 51b).
In claim 4,
A T-shaped shear key 512 is protruded from the front of the fixed block 51a on one side of the fixed blocks 51a and 51b connecting the neighboring wire dampers 50a and 50b, and the corresponding fixed block 51b on the other side. A lintel-type wire vibration damping apparatus, characterized in that a fitting groove (513) having a shape corresponding to the T-shaped shear key (512) is formed on the front side so that the T-shaped shear key (512) is inserted.
In claim 4,
On the front surface of the fixing blocks 51a and 51b connecting the adjacent wire dampers 50a and 50b, coupling protrusions 514a and 514b of L-shaped cross-section are formed to protrude, so that the coupling protrusions 514a and 514b are engaged with each other. A lintel-type wire vibration damping device, characterized in that it is coupled.
In claim 1,
An adjustment pipe (53) is provided between the through hole (511) and the damping wire (52).

Images