KR102023595B1 - Apparatus for jointing frame structure and support bracket for the same - Google Patents

Abstract

To prevent twisting and slipping between the members constituting the steel structure, and to prevent relative rotational displacement between the members, a long hole is formed on at least one surface and has a surface contacting each of the first member and the second member to be connected. A fastener, a slit formed in the first member or the second member and a fastening means for fastening the fastener to the first member or the second member through the elongated hole, which is provided between the first member or the second member and the fastener Provided is a structure connecting device including a flow preventing bracket.

Description

Flow preventing bracket of structure connecting device and connecting device {APPARATUS FOR JOINTING FRAME STRUCTURE AND SUPPORT BRACKET FOR THE SAME}

Disclosed is a flow preventing bracket provided in a connecting device and a connecting device for connecting a steel structure.

For example, in a building, steel structures are installed in the structure of a building to construct interior or exterior materials. The steel structure may be a truss-type structure in which a steel tube or beam is disposed horizontally and vertically and joined.

Steel structure is a component that connects the structure of the building and the interior and exterior panel system, and is a very important non-structural element to secure the seismic performance of the building.

In the case of the structure in which each member of the steel structure is welded, the joints are welded to be very solid, but there is a risk of being damaged without being able to follow the dynamic behavior of the structure in the event of an earthquake.

Accordingly, there is an increasing demand for a non-welding connection structure in which each member constituting the steel structure is bolted to improve the shock resistance.

Provided is a structure preventing device and a flow preventing bracket of the connecting device to prevent the twisting and slipping between each member of the steel structure.

Provided is a structure preventing device and a flow preventing bracket of the connecting device to prevent relative rotational displacement between each member of the steel structure.

The structure connecting device of the present embodiment includes a fastener having a surface contacting each of the first member and the second member constituting the structure and having a long hole formed on at least one surface thereof, a slit formed in the first member or the second member, and the long hole formed therein. Fastening means for fastening the fastener to the first member or the second member through, and may include a flow preventing bracket installed between the first member or the second member and the fastener.

The anti-flow bracket of the present embodiment forms a long hole on the surface and protrudes from one side to both sides along the long hole, and may include a protrusion inserted into the long hole of the fastener and the slit of the first member or the second member. have.

Each of the protrusions may be formed at one end portion of the long hole.

Each of the protrusions may include a locking part in which at least a part of both sides of the width direction constitute a plane.

Each of the protrusions may include a latching portion in which both sides in the width direction contact at least two places in the width direction both sides of the long hole and in the width direction both sides of the slit, respectively.

Each of the protrusions may have a width corresponding to the width of the long hole and the width of the slit.

The locking portion may have a structure in contact with both side surfaces in the width direction of the long hole and both side surfaces in the width direction of the slit.

Each of the protrusions may further include a curved portion that is integrally formed at the tip of the engaging portion and curved in an arc shape in contact with the tip of the long hole and the tip of the slit.

The flow preventing bracket may be made of a metal material or a nonmetal material including urethane.

Thus, according to this embodiment, the relative rotation between the fastener and the steel structure is prevented, it is possible to prevent the steel structure is twisted or twisted fastening during construction. Thus, it is possible to fasten the steel frame structure more securely.

In addition, it is possible to increase the adhesion and fastening force between the steel structure and the fast, it is possible to improve the seismic characteristics by minimizing the phenomenon that the bolt slips off the fastener when the earthquake occurs.

1 is an exploded perspective view of a structure connecting device according to the present embodiment.
Figure 2 shows the assembled state of the structure connecting device according to this embodiment.
3 is a cross-sectional view showing an assembly state of the structure connecting apparatus according to the present embodiment.
4 and 5 show the bracket of the structure connecting device according to the present embodiment.
6 is a view showing the bracket of the structure connecting device according to another embodiment.
7 to 9 are photographs showing the results of the seismic resistance test of the steel structure assembled with the structure connecting device according to the present embodiment in comparison with the prior art.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art can easily understand, the embodiments described below may be modified in various forms without departing from the concept and scope of the present invention. Where possible, the same or similar parts are represented using the same reference numerals in the drawings.

The terminology used below is merely to refer to specific embodiments, and is not intended to limit the present invention. As used herein, the singular forms “a,” “an,” and “the” include plural forms as well, unless the phrases clearly indicate the opposite. As used herein, the meaning of “comprising” embodies a particular characteristic, region, integer, step, operation, element, and / or component, and other specific characteristics, region, integer, step, operation, element, component, and / or group. It does not exclude the presence or addition of.

All terms including technical terms and scientific terms used below have the same meaning as those commonly understood by those skilled in the art. Terms defined in advance are additionally interpreted to have a meaning consistent with the related technical literature and the presently disclosed contents, and are not interpreted in an ideal or very formal sense unless defined.

Figure 1 shows an exploded state of the structure connecting device according to the present embodiment, Figures 2 and 3 illustrate the assembled state of the structure connecting device and its cross-sectional structure.

Hereinafter, the present embodiment will be described by way of example as a connecting device for the steel structure in which the square tube having a rectangular cross-sectional structure is connected in a grid form. The structure connecting device 10 is applicable to all of the structures assembled in various forms in addition to the steel structure of the grid form. For convenience of description, the members arranged vertically among the structures connected in a grid form are referred to as the first member 100 and the members arranged horizontally are referred to as the second member 200.

As shown in FIG. 1, the structure connecting device 10 according to the present embodiment includes a fastener 20 and a fastener 20 connecting the first member 100 and the second member 200 to the first member 100. ) And a flow preventing bracket 40 installed between the fastening means fastening to the second member 200 and the first member 100 or the second member 200 and the fastener 20, respectively.

In this embodiment, the fastening means may be a bolt 30 and a nut 32. As the nut 32 is fastened to the bolt 30, the fastener 20 is fixed to the first member 100 and the second member 200. Thus, the first member 100 and the second member 200 are assembled through the fastener 20.

The first member 100 and the second member 200 have slits 110 and 2120 extending on the fastening surface of the fastener 20, respectively. The slit 110.210 may be formed to a width such that the screw shaft of the bolt 30 passes sufficiently and the head of the bolt is sufficiently larger than the screw shaft diameter of the bolt 30 and smaller than the head diameter of the bolt 30. In the following description, the width means a length with respect to the z-axis direction in FIG. 1, and the width direction means a z-axis direction.

One front end of the slits 110 and 210 may extend to end portions of the first member 100 and the second member 200. Circular holes 120 and 220 may be formed at opposite ends of the slit so that the bolt head of the bolt 30 as a fastening means may be fitted thereto.

The fastener 20 may be a thin plate structure that is bent at right angles. The fastener 20 is bent at a right angle to contact the first member 100 and the second member 200, respectively. Hereinafter, each curved portion of the fastener 20 is referred to as a first plate 22 and a second plate. The first plate 22 is a portion in contact with the first member 100, and the second plate is a portion in contact with the second member 200.

The first plate 22 and the second plate 24 of the fastener 20 have long holes 26 and 28 on their surfaces, respectively. The long holes 26 and 28 are formed at positions coincident with the slits 110 and 210. In the present embodiment, the long holes 26 and 28 may be formed to have the same size as the width of the slits 110 and 210, respectively.

Thus, for example, when the first plate 22 of the fastener 20 is brought into close contact with the first member 100, the slit in which the long hole 26 provided in the first plate 22 is formed in the first member 100 is formed. Coincides with 110.

 In this embodiment, the flow preventing bracket 40 may be installed between the first member 100 and the first plate 22 of the fastener 20. Of course, in addition to the above structure, the flow preventing bracket 40 may be installed between the second member 200 and the second plate 24 of the fastener 20. Hereinafter, the present embodiment describes a structure in which the flow preventing bracket 40 is installed between the first member 100 and the first plate 22 of the fastener 20 as an example.

The flow preventing bracket 40 is a thin plate structure, and may be formed in a size substantially similar to that of the first plate 22. Flow preventing bracket 40 has a long hole 42 formed on the surface. The long hole is a long elongated hole, the width of the long hole 42 may be formed to the same size as the width of the long hole 26 provided in the first plate (22).

Accordingly, the bolt 30 is inserted through the long hole 26, the long hole 42, and the slit 110 in a state where the flow preventing bracket 40 is inserted between the first plate 22 and the first member 100. Can be penetrated. Then, the fastener can be fixed to the first member by fastening and tightening the nut 32 to the bolt 30 protruding outward through the long hole 26 of the first plate.

In this embodiment, the flow preventing bracket 40 may be made of a metal material. The flow preventing bracket 40 may be made of a non-metal material having low thermal conductivity, for example, urethane or the like in addition to the metal material. If the flow preventing bracket 40 is made of a urethane material, it is possible to prevent the generation of condensation. In addition, the flow preventing bracket 40 may improve adhesion between the fastener 20 and the structure by the viscoelasticity and friction of the urethane. As a result, the joint between the fastener 20 and the structure may be closely adhered to induce an improved seismic characteristic.

The flow preventing bracket 40 is installed between the fastener 20 and the first member 100 to prevent the fastener 20 from being rotationally displaced or twisted with respect to the first member 100.

To this end, as shown in FIG. 4, the flow preventing bracket 40 may include protrusions 44 protruding from both sides to the outside, respectively. The protrusion 44 is formed on one side along the long hole 42, and has a structure of being inserted into the long hole 26 of the fastener 20 and the slit 110 of the first member 100, respectively. Protruding height of the projections 44 is sufficient enough to be inserted into the long hole 26 or the slit 110, can be variously modified depending on the thickness of the steel structure or fastener 20.

As shown in FIG. 5, the protrusion 44 of the present embodiment may be formed at one end portion of the long hole 42. The two protrusions 44 protrude from both sides of the flow preventing bracket 40 by only changing directions at the same position. Thus, since the protrusion 44 is located at one end of the long hole 42, the bolt 30 and the flow preventing bracket 40 can be relatively moved to an appropriate position through the remaining long extended portion of the long hole 42.

The protrusions 44 protruding in both directions are each formed to have a width D having a length corresponding to the width of the long hole 26 and the width of the slit 110, respectively. In addition, each of the protrusions 44 may include a locking portion 46 in which at least a portion of both sides in the width direction forms a plane. To form a plane means that the side surface of the engaging portion is flat and is in surface contact with both sides in the width direction of the long hole or both sides in the width direction of the slit.

In the present embodiment, the locking portion 46 has a structure in which the width D is equal to the width of the slit or the long hole, and both sides of the width direction extend in a straight line to form a flat plane. The locking portion 46 is fitted into the long hole 26 or the slit 110 and is in surface contact with the inner side of the long hole and the inner side of the slit. In other words, the locking portions 46 of the protrusions 44 are in contact with both side surfaces of the long hole in the width direction and both sides of the slit in the width direction.

As such, the engaging portion 46 of the protrusion 44 is in surface contact with the side surface of the slit 110, so that relative rotation is not performed between the first member 100 and the flow preventing bracket 40. Similarly, the engaging portion 46 of the projection 44 on the opposite side of the flow preventing bracket 40 is in surface contact with the side surface of the long hole 26, so that the flow preventing bracket 40 and the first member 100 are relatively in contact with each other. No rotation will take place. Therefore, the fastener 20 and the first member 100 coupled to each other by the flow preventing bracket 40 are prevented from being rotated relative to each other. That is, when the first member 100 and the flow preventing bracket 40 rotate with each other, the edges of the catching portion 46 are caught on the inner surface of the slit to prevent rotation.

The length (L) of the locking portion 46 of the protrusion 44 is sufficient to prevent the rotation of the flow preventing bracket 40, and varies depending on the material of the flow preventing bracket 40 or the fastener 20 or the structure. Is deformable.

As mentioned above, in addition to the planar structure in which the surface contact is made, the locking part may be modified into various structures for preventing rotation. For example, the engaging portion of each projection may have a structure in which both sides in the width direction are in contact with each other in at least two places at intervals on both sides in the width direction of the long hole and both sides in the width direction of the slit. For example, the widthwise side surface of the long hole and the engaging portion contact each other at at least two places, so that each contact point of the engaging portion acts like a corner of the engaging portion of the flat surface to prevent the projection from rotating in the long hole. Therefore, in addition to the structure in which the locking portion is in contact with the surface contact as described above in two places also can prevent the occurrence of rotational displacement between the two members.

Each of the protrusions 44 may further include a curved portion 48 that is integrally formed at the distal end of the locking portion 46 and is in contact with the distal end of the long hole 26 and the distal end of the slit 110. The curved portion 48 forms a body with the catching portion 46. The curved portion 48 may be curved in an arc shape to correspond to the tip of the long hole or the tip of the slit.

By providing the curved portion 48, the projections 40, which are also processed in the shape of an arc, can be installed more smoothly in close contact with the projections 40 at the tip of the long hole 26 or the tip of the slit 110.

6 shows another embodiment of the flow preventing bracket 40 having a different structure of the protrusion 44.

The flow preventing bracket 40 shown in FIG. 6 is identical to the structure of the flow preventing bracket 40 described above except that the structure includes only the locking portion 46 without the curved portion (see 48 of FIG. 5). Therefore, the same reference numerals are used for the components described above, and detailed description thereof will be omitted.

The protrusion 44 of the flow preventing bracket 40 of the present embodiment simply includes only the locking portion 46, which makes it easier to manufacture and to reduce the raw materials used during manufacturing, thereby increasing the cost competitiveness of the product.

Experimental Example

Applying the flow prevention bracket prepared according to this embodiment to assemble the steel structure as a connecting device. The seismic simulation test using the vibration table was performed on the assembled steel structures and the seismic performance was tested.

Hereinafter, the embodiment is, as mentioned, the steel structure of the structure to which the flow preventing bracket is applied, the comparative example is a steel structure assembled using a conventional connecting device is not applied to the flow preventing bracket.

Both the examples and the comparative examples were excited using the actual observation earthquake wave (EL centro NS, 1940). At this time, the experiment was conducted while adjusting the acceleration factor of the used earthquake wave to increase the magnitude of the maximum acceleration so that the maximum acceleration of the input earthquake wave as the reference is the design level acceleration.

In both the Examples and Comparative Examples, the arrangement structure and form of the steel structure are the same. All of the steel structures were connected so that the exterior material could be attached two horizontally and six horizontally. The stone finishing material was constructed in the same manner as the exterior material attached to the steel structure and mounted on the steel structure of the example and the comparative example.

The experiment was carried out under the same conditions. After the excitation test, the soundness of the steel structure and the dropping of the stone finish were observed.

As a result of the experiment, when the damage situation was observed according to the acceleration level, when the KBC design rule was viewed as 1, both the Example and the comparative example showed a slight change. Therefore, it can be confirmed that the seismic performance of the design rule secures both the examples and the comparative examples.

However, when the excitation force of 0.7233 PGA (g) was applied at 3.5 times the design rule, a significant difference appeared in the experimental results of the examples and the comparative examples.

7 to 9 show the results of observing the external states of the examples and the comparative examples after applying 3.5 times the excitation force of the design rule.

In FIG. 7, the right side shows the state with respect to a comparative example, and the left side shows the state with respect to an Example. As shown in FIG. 7, in the case of the comparative example, it is possible to confirm that the joint of the stone finish is dropped by the seismic wave so that the stone finish is dropped from the steel structure. On the contrary, in the case of the embodiment, by applying the play prevention bracket, twisting is prevented against the seismic wave, so that the stone finishing material is not dropped and it is confirmed that it is very sound.

When observing the state of the back of the embodiment and the comparative example, in the case of the comparative example it can be seen that the connecting device for connecting the steel structure as shown in Figure 8 is removed with the stone finish.

On the other hand, in the case of the embodiment it can be seen that the connection device for connecting the steel structure is maintained very sound as it is initially connected.

As such, by assembling the steel structure with the connection device of the present embodiment to which the flow preventing bracket is applied, it is possible to prevent the twist or rotational displacement between the steel structure and the connecting device to secure a strong shock resistance even at 3.5 times or more of the design force.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited thereto, and various modifications and changes can be made within the scope of the claims and the detailed description of the invention and the accompanying drawings. Naturally, it belongs to the range of.

10: connecting device 20: fastener
22: first plate 24: second plate
26,28: long hole 30: bolt
32: nut 40: flow preventing bracket
42: long hole 44: turning
46: locking portion 48: curved portion

Claims (14)

A fastener having a surface in contact with each of the first member and the second member constituting the structure and having a long hole in at least one surface thereof,
Fastening means for fastening the fastener to the first member or the second member through the slit and the long hole formed in the first member or the second member, and
Flow prevention bracket installed between the first member or the second member and the fastener
Including,
The flow preventing bracket has a long hole formed on the surface, the structure connecting device comprising a projection which is formed to protrude from one side to both sides along the long hole is inserted into the long hole of the fastener and the slit of the first member or the second member. The method of claim 1,
And each of the protrusions has a width corresponding to the width of the long hole and the width of the slit. The method of claim 1,
The flow preventing bracket is a structure connecting device made of a non-metal material including a metal material or urethane. The method according to any one of claims 1 to 3,
Each of the protrusions comprises a locking portion in which at least a portion of both sides in the width direction form a plane. The method according to any one of claims 1 to 3,
And each of the protrusions includes a locking portion which contacts both sides in the width direction of the elongated hole and at least two sides in the width direction of the slit, respectively. The method of claim 4, wherein
Each of the engaging portions is a structure connecting device of the structure in contact with both sides in the width direction of the long hole and both sides in the width direction of the slit. The method of claim 6,
Each of the protrusions is formed integrally with the front end of the engaging portion further comprises a curved portion curved in the form of an arc contacting the front end of the long hole and the front end of the slit. A fastener having a surface contacting each of the first member and the second member constituting the structure and having a long hole formed on at least one surface thereof, a slit formed in the first member or the second member and the fastener through the long hole; In the flow preventing bracket provided between the fastener and the first member, or the fastener and the second member of the structure connecting device including a fastening means for fastening to the member or the second member,
The anti-flow bracket has a long hole formed on the surface of the structure connecting device including a projection which is formed to protrude from one side to both sides along the long hole and inserted into the long hole of the fastener and the slit of the first member or the second member. Anti-flow bracket. The method of claim 8,
The protrusion is a flow preventing bracket of the structure connecting device is formed with a width corresponding to the width of the long hole and the width of the slit, respectively. The method of claim 8,
The flow preventing bracket is a flow preventing bracket of a structure connecting device made of a non-metal material including a metal material or urethane. The method according to any one of claims 8 to 10,
Each of the protrusions is a flow preventing bracket of the structure connecting device, each of which comprises a locking portion of which at least a portion of both sides in the width direction forming a plane. The method according to any one of claims 8 to 10,
Each of the protrusions is a flow preventing bracket of the structure connecting device, each of the width direction both sides in the width direction of the long hole and the width direction side of the slit, respectively. The method of claim 11,
The engaging portion is a flow preventing bracket of the structure connecting device of the structure in contact with both sides in the width direction of the long hole and both sides in the width direction of the slit. The method of claim 13,
Each of the protrusions is integrally formed at the end of the engaging portion and the flow preventing bracket of the structure connecting device further comprises a curved portion curved in the form of an arc contacting the front end of the long hole and the front end of the slit.

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