KR101141252B1 - Method of damping architectural structure and architectural structure having damping apparatus - Google Patents

Abstract

According to the damping method of the disclosed building structure, there is provided a damping device having an energy dissipation capability including a plastic behavior member between a connecting beam and a vertical extension member connecting adjacent vertical extension members. The damping device plastically deforms when a force of a predetermined magnitude or more is applied to the elastic member in a direction perpendicular to the longitudinal direction of the connecting beam. Therefore, it is possible to improve the vibration damping performance of the building structure, it is possible to reduce the cost by reducing the reinforcement such as reinforcing bars included in the vertical member.

Description

METHOD OF DAMPING ARCHITECTURAL STRUCTURE AND ARCHITECTURAL STRUCTURE HAVING DAMPING APPARATUS}

The present invention relates to a method for damping a building structure, and more particularly, to a building structure having a damping method and a damping device for a building structure.

Generally, building structures are constructed with structural systems that provide resistance to lateral forces. For example, a typical building structure may have columns extending vertically and beams connecting these columns. Recently, as the construction of high-rise and high-rise building structures has increased, building structures having shear walls and connecting beams have been widely constructed using RC (Reinforced Concrete). RC method is to arrange reinforcing bar in concrete so that both are united and receive external force.

 In the case of such a building structure, in particular a high-rise building structure, when the lateral pressure is applied to the building structure by an earthquake or strong wind, shaking or damage of the building structure may occur due to shear deformation generated in the pillars. In addition, since the bending moment and shear force generated by the lateral load are concentrated at the joint where the vertical structural member and the horizontal structural member are connected, a complex rebar arrangement is performed at the joint to resist extreme loads such as earthquakes and strong winds. According to the seismic design to secure the seismic performance, even after the reinforcing bar is reinforced, the joint becomes plastic after the earthquake load and thus cannot be reused.

Therefore, in order to prevent the above problems, it is necessary to provide damping (damping) and restoring force to the building structure, and considering the increasing number of skyscrapers, the need for providing adequate damping and restoring force is increasing.

Accordingly, an object of the present invention is to provide a damping method for a building structure that can provide a damping and restoring force.

Another object of the present invention is to provide a building structure having a damping device for performing the damping method of the building structure.

According to the damping method of a building structure according to an embodiment for achieving the above object of the present invention, there is provided a damping device capable of bilinear behavior to have an energy dissipation capacity between the connecting beam and the vertical extension member connecting the adjacent vertical extension member to provide. When the damping device is subjected to a force of a predetermined magnitude or more in the longitudinal direction of the connecting beam or in a direction perpendicular to the longitudinal direction, the damping device performs a plastic behavior.

According to an embodiment of the present invention, the damping device may include an elastic member, the elastic member may provide a restoring force to the plastically deformed damping device.

According to an embodiment of the present invention, the vertical extension member is a shear wall including reinforcement-concrete, and the connecting beam may include at least one selected from the group consisting of reinforcement-concrete, steel and reinforcement-steel-concrete.

Building structure having a damping device according to an embodiment for achieving the object of the present invention is provided between a plurality of vertical extension members, connecting beams connecting adjacent vertical extension members and between the connecting beams and the vertical extension member, and corresponding to the stress And a damping device capable of bilinear behavior.

According to an embodiment of the present invention, the damping device may include a plastic behavior member that performs a plastic behavior with respect to a force of a predetermined size or more, and an elastic member that provides a restoring force to the damping apparatus.

According to the present invention described above, it is possible to greatly improve the vibration damping performance of the building structure. Therefore, it is possible to reduce the reinforcing materials such as reinforcing bars included in the vertical member, which may lead to effects such as load reduction and cost reduction.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. As the inventive concept allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to a specific disclosed form, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention. In describing the drawings, similar reference numerals are used for similar elements. In the accompanying drawings, the dimensions of the structures are shown in an enlarged scale than actual for clarity of the invention.

1 is a partial perspective view of a building structure having a damping device for connecting a vertical extension member and a connecting beam. 2 is a cutaway perspective view illustrating a damping device used in a damping method of a building structure according to an embodiment of the present invention, and FIG. 3 is a cross-sectional view illustrating the damping device of FIG. 1.

Referring to FIG. 1, a damping device 100 is provided between the vertical extension member 300 and the connecting beam 200. The damping device 100 connects the vertical extension member 300 and the connecting beam 200.

The vertical extension member 300 may have a length in a vertical direction, and the upper and lower ends of the vertical extension member 300 may be connected to the bottom member, and may support a load such as a bottom member connected to the upper part. For example, the vertical extension member 300 may be a core, a circumferential column, a shear wall, an end wall, and the like of a building structure. According to one embodiment of the invention, the vertically extending member is a shear wall made of reinforced concrete (RC).

The connecting beam 200 extends horizontally to connect the vertical extension members 300. As shown in FIG. 1, the plurality of connecting beams 200 connect the vertical extension members 300, so that the plurality of vertical extension members 300 may be connected. The connecting beam 200 may include reinforcing-concrete (RC), steel (Steel), steel-reinforcing-concrete (SRC), and the like.

2 and 3, the damping device 100 is provided between the first connecting plate 9, the second connecting plate 10, and the first connecting plate 9 and the second connecting plate 10. An elastic bearing positioned. The first connecting plate 9 is connected to the vertically extending member (not shown) through the first fixing member 16, and the second connecting plate 10 is connected to the connecting beam through the second fixing member 15. 200, to transfer pressure to the elastic bearing.

The elastic bearing comprises an elastic resin 5, a core 7 and an internal reinforcement plate 2. The elastic resin 5 may be made of, for example, rubber, and specifically, natural rubber, synthetic rubber, or vulcanized rubber may be used. The elastic resin 5 has an inner hollow for accommodating the core 7, and the hollow extends in the longitudinal direction of the connecting beam. According to the exemplary embodiment of the present invention, the elastic resin 5 may have a cross section of a rectangular or square shape with respect to the longitudinal direction of the connecting beam, but may have another polygonal shape such as an octagonal shape or a circular shape. The elastic resin 5 corresponds to an elastic member that provides elastic force and restoring force to the elastic bearing.

The core 7 may have a cylindrical shape and is accommodated in a hollow inside the elastic resin 5. Preferably, the core 7 may be made of lead. The lead core corresponds to a plastic behavior member capable of plastic behavior with respect to a pressure of a predetermined size or more.

The inner reinforcing plate 2 may have a plate shape parallel to the direction perpendicular to the longitudinal direction of the connecting beam 200. The inner reinforcing plate (2) may be embedded in the elastic resin (5) spaced apart from each other, for example, may be made of steel. The inner reinforcing plate 2 may increase the rigidity of the elastic bearing to prevent the bearing from being excessively contracted or extended by the lateral pressure or tension.

The elastic bearing may further comprise a first end steel plate 3 adjacent to the first connecting plate 9 and a second end steel plate 4 adjacent to the second connecting plate 10. The first and second end steel plates 3, 4 may be in contact with the core 7 and are thicker than the inner reinforcing plate 2. The first and second end steel plates 3, 4 are connected to the first connecting plate 9 and the second connecting plate 10 via shear keys 12. Thus, the vertical pressure applied to the first connecting plate 9 and the second connecting plate 10 is transmitted. The first and second end steel plates 3 and 4 may be fixed to the first connecting plate 9 and the second connecting plate 10 using fixing bolts 11.

4 is a side view schematically illustrating a building structure in which stress is dispersed by a damping method of the building structure according to an embodiment of the present invention, and FIG. 5 is a partial side view of the building structure of FIG. 4. 6 is a graph showing the hysteresis characteristics of the damping device used in the damping method of a building structure according to an embodiment of the present invention.

Damping method of the building structure according to an embodiment of the present invention provides a damping device capable of bilinear behavior. The hysteretic characteristics of a structure with respect to stress can be distinguished according to the method of energy dissipation, and depending on the structure and material, bilinear behavior, friction behavior, viscoelastic behavior, viscous behavior, etc. can be obtained. Possible bilinear behavior members may be included, and a plurality of members having different behaviors may be used as a result of which bilinear behavior is possible. For example, the lead-rubber elastic bearing used in one embodiment of the present invention provides a damping device capable of bilinear behavior using lead and rubber having different behavior characteristics.

4 and 5, a damping device 100 is provided between the vertical member 400 and the connecting beam 500 of the building structure. When a building structure, in particular, a high-rise building structure is subjected to a lateral pressure of a predetermined size or more due to an earthquake, strong wind, or the like, as shown in FIG. Shear and flexural stresses occur. These shear and flexural stresses are structurally prone to concentrate on the joint or joint between the beam and the vertical member.

When the building structure is bent in the horizontal direction, the damping device behaves in response to the generated stress. In this process, the damping device dissipates energy and provides restoring force according to the type of device.

When the building structure is bent in the horizontal direction, the elastic bearing of the damping device deforms in response to the pressure applied. In this process, the lead core of the elastic bearing exhibits plastic behavior and the elastic resin provides restoring force. The deformation of the elastic bearing can be represented schematically in the graph of FIG. In the graph of FIG. 6, the vertical axis represents the force N in the vertical direction applied to the elastic bearing, and the horizontal axis represents the displacement S. FIG. 6 schematically shows the behavior of an elastic bearing, where the actual behavior may not represent a straight line. Actual behavior of the elastic bearing may vary depending on the thickness of the elastic resin, the width of the elastic resin, the elastic modulus of the elastic resin, the length of the lead core, the diameter of the lead core, the thickness of the reinforcing plate, and the like.

Referring to FIG. 6, it can be seen that the hysteretic relationship of the elastic bearings is bilinear and has a high energy dissipation capacity. Assuming that yield (deformation) due to shear stress and flexural stress of the elastic bearing occurs at any value Y, the yield stress of the connecting beam needs to be greater than the yield stress of the damping device. Otherwise, the beams may break before the damping by deformation of the damping device is provided.

Damping method of the building structure according to an embodiment of the present invention, in particular can be usefully used in high-rise building structure. In the case of a high-rise building structure, since the bending and vibration appear more structurally in the upper part of the building structure, a method of installing only the upper part of the building structure or installing more than the lower part by varying the installation ratio of the damping device may be used.

Damping method of the building structure according to an embodiment of the present invention, can significantly improve the vibration damping performance of the building structure. Therefore, it is possible to reduce the reinforcing materials such as reinforcing bars included in the vertical member, which may lead to effects such as load reduction and cost reduction. In addition, the damping method of the building structure may be used not only for new building structures but also for vibration suppression reinforcement of existing building structures.

As described above with reference to the preferred embodiment of the present invention, those skilled in the art without departing from the spirit and scope of the present invention described in the claims below various modifications and It will be appreciated that it can be changed.

The present invention described above relates to a building structure having a damping method and a damping device for a building structure, and can be used in the field of construction, design, and the like of a building structure.

1 is a partial perspective view of a building structure having a damping device for connecting a vertical extension member and a connecting beam.

2 is a cutaway perspective view illustrating a damping device used in a damping method of a building structure according to an embodiment of the present invention.

3 is a cross-sectional view illustrating the damping device of FIG. 1.

4 is a side view schematically illustrating a building structure in which stress is dispersed by a damping method of the building structure according to an embodiment of the present invention.

5 is a partial side view of the building structure of FIG. 4.

6 is a graph showing the hysteresis characteristics of the damping device used in the damping method of a building structure according to an embodiment of the present invention.

Claims (6)

delete delete delete A plurality of vertically extending members; Connecting beams connecting adjacent vertically extending members; And A damping device provided between the connecting beam and the vertical extension member and capable of plastic behavior and recovery in the vertical direction in response to a predetermined stress or more; The damping device has a shape extending in the longitudinal direction of the connecting beam, the core capable of plastic behavior; And And an elastic resin having a hollow for accommodating the core and providing a restoring force to the damping device. delete The damping device according to claim 4, wherein the vertical extension member is a shear wall including reinforcement-concrete, and the connecting beam includes at least one selected from the group consisting of reinforcement-concrete, steel and reinforcement-steel-concrete. Building construction.

Images