KR101365093B1 - Earthquake isolation device for supporting a structure - Google Patents

Abstract

The present invention relates to an earthquake isolation device for supporting a structure capable of extending service life by easing impact applied to a building and a bridge by reducing and buffering the impact of a dynamic load, such as an earthquake and a wind load, and capable of protecting a bridge by buffering impact suddenly applied in a horizontal direction and having the original function of an existing bridge bearing by being easily applied to the known various bridge bearings. The earthquake isolation device includes: a lower base; an upper base installed on the lower base; a support unit installed between the lower base and the upper base and controlling a load or rotating moment applied to the lower base; an earthquake isolation unit installed in the support unit to be attached and detached and buffering transverse force by abutting the upper base to be movable; and an auxiliary buffering member which mutually and elastically connects the lower base and the upper base and which allows the upper and lower bases to be bent in the movement direction when the lower and upper bases move and to be restored through elastic force when the lower and upper bases are restored.

Description

Earthquake isolation device for supporting a structure}

The present invention relates to a seismic isolator, and more particularly, to dampen and reduce the impact on dynamic loads such as earthquakes and wind loads to alleviate the impacts on buildings and bridges, so that the seismic isolator for supporting a structure can extend its durability life. Relates to a device.

In general, since the vehicle travels at a high speed on a bridge having a structure in which a top plate is placed on a bridge, a load that changes every moment is applied to the bridge.

In addition, in a large bridge with a relatively long top plate, the amount of expansion of the top plate is increased due to the heat deformation according to the change of the season. Therefore, it should be designed to allow relative movement at the contact portion of the top plate and the bridge.

In addition, it should have a supporting structure that can cushion the impact on the bridge in the horizontal direction due to an earthquake or the like.

To this end, a seismic isolator for supporting the structure is usually installed between the bridge piers and the upper plate.

That is, the seismic isolator is located at the contact point of the upper structure and the lower structure of the bridge and statically absorbs the relative displacement or horizontal force of the upper structure due to the change of the upper structure and the left and right (wind direction), etc. to smooth the seismic function of the bridge, It is an important device to extend the lifespan.

Such conventional seismic isolator is Korea Patent No. 10-0762941, which is provided between the upper structure and the lower structure of the bridge to support the load of the upper structure and at the same time due to other external forces such as vibration and wind load due to earthquake A seismic isolating bearing device for a structure for protecting the upper structure and the lower structure from vibration is disclosed.

However, the seismic isolating bearing device for the structure has a problem that the absorption range for the earthquake in the horizontal direction is quite insignificant, and the structure is complicated and economical when the earthquake occurs.

The problem to be solved by the present invention is that the shock and shock to the dynamic loads such as earthquakes and wind loads to reduce the impact on buildings and bridges to extend the endurance life, yet to achieve a relatively simple structure, which is quite convenient to manufacture In particular, the present invention is to provide a seismic isolator for supporting the structure to protect the bridge by buffering a sudden impact force in the horizontal direction as well as the unique function of the existing bridge device by easily applied to a variety of known bridge device.

As means for solving the above problems, the present invention,

Lower base;

An upper base installed on the lower base;

A support unit installed between the lower base and the upper base to control a rotation moment or a load applied to the upper base and the lower base;

A seismic isolation unit detachably installed on the support unit and movable against the upper base to cushion the force in the transverse direction;

And an auxiliary buffer member that elastically connects the lower base and the upper base to each other and bends in a moving direction when the lower base or the upper base moves, and assists the restoration by resilience when restoring the lower base or the upper base. Features provide a seismic isolation device for supporting the structure.

The lower base of the above-described base isolation device for supporting structure,

A pad receiving groove into which the support unit is inserted;

It is preferable to have a coupling portion through which the elastic bolt of the auxiliary buffer member is inserted.

The upper base of the above-described base isolation device for supporting structure,

A stainless plate installed on a bottom surface of the stainless steel plate to be slidably opposed to the base isolation unit;

It is preferable to have a support piece protruding downward to restrain the outer surface of the base isolation unit inserted into the inner side.

The support unit of the above-described seismic isolator for supporting structure,

A pad inserted into the pad receiving groove;

A sealing ring inserted into the pad receiving groove to fix the pad;

A pedestal mounted on the pad with a pressing protrusion facing the pad and a shear pin receiving groove formed at an upper center thereof;

It is preferable that the sealing member is provided on the circumferential surface of the pressing projection.

The base isolation unit of the base isolation device for supporting a structure described above is

A seismic isolation plate having a shear pin inserted into the shear pin accommodation groove and a fluorine resin plate accommodation groove on which a fluorine resin plate is installed;

A fluorine resin plate installed in the fluorine resin plate receiving groove so as to slide against the stainless plate;

A support ring surrounding the circumference of the shear pin;

A shock absorbing member radially installed around the shear pin and supported at both ends by a shear pin and a support ring to buffer a force in a transverse direction;

It is preferable that the buffer member is provided with a coupling hole through which an insertion hole is inserted, and is configured between a support piece and a support ring, and constitutes a restraining ring to block the separation of the buffer member. In particular, the shear pin is provided with a pair of stepped portions.

The auxiliary buffer member of the above-described seismic isolator for supporting structure,

Fixture fixed to the upper base via a fastening means;

An elastic bolt made of a synthetic resin material having one end portion rotatably fitted to the fixture and the other end portion inserted into the coupling portion of the lower base and having an elasticity therethrough;

A nut which is fastened to the other end of the elastic bolt to prevent separation from the coupling part;

It is preferable to include a fixing pin which is fitted to the other end of the elastic bolt to prevent the nut from being separated.

It is preferable that the expansion portion is further provided with a reinforcement portion of the above-described structure supporting base isolation device.

According to the present invention, by increasing the intrinsic period of the bridge structure artificially to reduce the induction of earthquake load as much as possible to greatly improve the stability of the bridge structure, even if the impact force of the omnidirectional shock absorbing member quickly It cushions and alleviates shock, preventing shock from being delivered to the bridge, which significantly extends the service life of the bridge. Moreover, the elastic bolt assists the restoration of the lower base and the cushioning member. The side effect of making sure that the shock is prepared can be expected.

In addition, since the buffer member is inserted into the coupling hole of the restraint ring to maintain the constant position (horizontal state) at all times, even if the shock absorbing member is compressed by the shear pin and the support ring, the compressed shock absorbing member is separated or distorted and the opposite side. Since the shock absorbing member is prevented from being distorted due to the separation between the shear pin and the support ring, it is possible to prevent a malfunction problem due to distortion or detachment, and thus there is an advantage that it is possible to always expect a uniform buffering ability.

Furthermore, it can be applied to various well-known bridge devices, while maintaining the original functions of the existing bridge devices (for example, rotation, vertical load, and telescopic load) while maintaining impact force against dynamic loads such as earthquakes and wind loads. Since it can buffer and damp vibrations, there is an advantage of significantly extending the life span of the bridge.

1 is a perspective perspective view of the seismic isolator for supporting the structure according to the present invention.
Figure 2 is a bottom perspective view of a seismic isolator for supporting the structure according to the present invention.
Figure 3 is an exploded perspective view of a seismic isolator for supporting the structure according to the present invention.
Figure 4 is an exploded bottom perspective view of a seismic isolator for supporting the structure according to the present invention.
Figure 5 is a plan sectional view of a seismic isolation device for supporting the structure according to the present invention.
Figure 6 is a front sectional view of the seismic isolator for supporting the structure according to the present invention.

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

1 is a combined perspective view of a seismic isolator for supporting a structure according to the present invention, Figure 2 is a bottom perspective view of a seismic isolator for supporting a structure according to the present invention, Figure 3 is an exploded perspective view of the seismic isolator for supporting the structure according to the present invention. 4 is a bottom exploded perspective view of a seismic isolator for supporting a structure according to the present invention, FIG. 5 is a plan cross-sectional view of a seismic isolator for supporting a structure according to the present invention, and FIG. It is a cross section.

1 to 6, a seismic isolation device for supporting a structure according to an embodiment of the present invention includes a lower base 210 and an upper base 220, a support unit 230, an isolation unit 240, and an auxiliary unit. It includes a buffer member 250, which is installed in upper structures, buildings, and bridges, such as power distribution equipment, to stably support the structure while buffering and reducing the impact force against dynamic loads such as earthquakes or wind loads and reducing vibration. do.

3 and 4, the lower base 210 is provided with a pad receiving portion 211 at the center thereof, and a coupling portion 212 is provided at the edge thereof.

Here, the pad accommodating part 211 is a groove having an inner opening upward so that the pad 231 of the support unit 230 can be accommodated inside, and the coupling part 212 is elastic of the auxiliary buffer member 250. It is a hole through which the bolt 252 can be inserted.

On the other hand, the coupling portion 212 is formed in the upper portion of the truncated cone-shaped expansion (212a (see Fig. 2), the insertion portion 212b (see Figure 2) is formed on the lower side.

Here, when the elastic bolt 252 is elastically deformed (bending) by the lower base 210 and the upper base 220, the expansion part 212a receives the deformation angle as much as possible and the elastic bolt 252 is broken. It is used to prevent things (shearing).

One end portion of the bush 253 constituting the auxiliary buffer member 250 is inserted into the insertion portion 212b.

3 and 4, the upper base 220 is a plate having a predetermined thickness, and includes a stainless plate 221 and a support piece 222, and is disposed on the lower base 210.

Here, the stainless steel plate 221 is installed on the bottom surface of the upper base 220 so as to slide slidably against the fluorine resin plate 242 of the seismic isolation plate 241 to be described later, to receive a horizontal displacement, The support piece 222 is disposed radially with respect to the stainless steel plate 221 to serve to restrain the support ring 243, which will be described later, so that it is not separated out.

3 and 4, the support unit 230 includes a pad 231, a sealing ring 232, a pedestal 233, and a sealing member 234. In the present embodiment, the lower base 210 is provided. And is installed between the upper base 220 and a function of controlling a rotation moment or a load applied to the upper base 210 and the lower base 220.

The pad 231 is prevented from being separated by a sealing ring 232 accommodated in the pad receiving portion 211 of the lower base 210 and inserted together.

Here, the pad 231 not only gives the rotation angle of the upper base 220 but also functions to stably buffer the load transmitted from the upper base 220 with an even vertical load distribution.

The sealing ring 232 is inserted into the pad accommodating portion 211 to prevent the pad 231 from being separated.

The pedestal 233 is mounted on the upper surface of the pad 231. In the present exemplary embodiment, the pedestal 233 is formed at the lower center of the pressing protrusion 233a against the upper surface of the pad 231 and presses the pad 231. It is provided with a shear pin receiving groove (233b).

Then, the shear pin receiving groove 233b is inserted into the shear pin 241a of the seismic isolation plate 241 to be described later.

The sealing member 234 is installed on the circumferential surface of the pressing protrusion 233a of the pedestal 233 and serves to block infiltration water between the lower base 210 and the pedestal 233.

3 and 4, the seismic isolation unit 240 is composed of an isolation plate 241, a fluorine resin plate 242, a support ring 243, a buffer member 244, and a confinement ring 245. In the present embodiment, the support unit 230 is detachably installed and movable to the upper base 220 so as to buffer the force in the transverse direction.

The base isolation plate 241 includes a shear pin 241a formed at the lower center and a fluorine resin plate accommodation groove 241b formed at the upper center.

Here, the shear pin 241a is inserted into the shear pin receiving groove 233b of the pedestal 233, and the fluorine resin plate 242 is inserted into and installed (fixed) into the fluorine resin plate receiving groove 241b.

According to this embodiment, when the lower base 210 and the support unit 230 moves in the transverse direction, since the shear pin 241a is inserted into the shear pin receiving groove 233b, the base isolation plate 241 is the lower base. It is possible to move in the transverse direction with the 210 and the support unit 230.

On the other hand, the shear pin 241a is provided with a pair of stepped portions 241a-1, wherein the pair of stepped portions 241a-1 has a tip end portion when the buffer member 244 is compressed in the transverse direction. Or it bends up to prevent it from falling out of position (horizontal state).

In particular, the distance between the pair of stepped portions 241a-1 is preferably equal to or slightly larger than the thickness of the buffer member 244.

Meanwhile, in the case of the buffer member 244, there may be a problem that the circumference protrudes convexly during compression, and thus pushes the seismic isolation plate 241 upward, so that a pair of stepped portions 241a are formed on the shear pin 241a. It is preferable to form -1).

The fluorine resin plate 242 is made of polytetrafluoroethylene (PTFE), which is commonly known under the trade names Teflon and Pluon, and is installed in the fluorine resin plate receiving groove 241b of the base plate 241. To be slidably coupled to the stainless steel plate 221 of the upper base 220 serves to minimize friction during movement.

The support ring 243 is installed to surround the shear pin 241a and is fixed by the support piece 222.

Here, the support ring 243 serves to block the shock absorbing member 244 is separated from the outside.

5 and 6, the buffer member 244 is radially installed around the shear pin 241 and both ends thereof are supported by the shear pin 241 and the support ring 243 in the transverse direction. Functions to cushion the force.

Here, the buffer member 244 is a synthetic resin material that can buffer the external shock, for example, a polyurethane (polyurethane) was applied, in addition, if it can perform the same function in the art, any of the known Application is also possible.

On the other hand, when the shock absorbing member 244 is pressed by the shear pin 241a moving in the lateral direction, the shock absorbing member 244 on the pressurized side is fixed but the shock absorbing member 244 on the opposite side is the shear pin ( Due to the separation between the 241a and the support ring 243, there may be a problem that the twist or one side is inclined to lose its function, it can be solved through the restraining ring (245).

The restraining ring 245 has a coupling hole 245a through which the buffer member 244 is inserted, and is disposed between the shear pin 241a and the support ring 243 to prevent the buffer member 244 from twisting. Function.

According to this embodiment, even if the shock absorbing member 244 is pressed by the shear pin 241a, the opposite shock absorbing member 244 is formed of the stepped portion 241a-1 and the restraining ring 245 of the shear pin 241a. Since it is supported while maintaining the horizontal state by the coupling hole (245a) it can fundamentally solve problems such as distortion.

3 and 4, the auxiliary buffer member 250 includes a fixture 251, an elastic bolt 252, a bush 253, a washer 254, a nut 255, and a fixing pin 256. It is configured, and serves to assist this to be quickly restored during the restoration of the upper base 220 and the buffer member 244 while interconnecting the lower base 210 and the upper base 220.

The fixture 251 is disposed on the lower surface of the upper base 220 is fixed via a fastening member (for example, bolts and nuts).

In particular, the fastener 251 is formed with a head receiving portion (251a), the inside of the head receiving portion (251a) is an elastic bolt (semi-spherical head (see Fig. 2) of the elastic bolt 252 is accommodated to be rotated) 252 is formed to correspond to the hemispherical head (see Fig. 2).

The elastic bolt 252 is a synthetic resin material of the elastic material, in the case of the present embodiment, a polyurethane (polyurethane) was applied, if any other than that can perform the same function in the field, the application of any known It is possible. The hemispherical head (see FIG. 2) formed at one end of the elastic bolt 252 is rotatably fitted to the above-described fixture 251, and the other end is fitted to the engaging portion 211b of the lower base 210 to penetrate therethrough. do.

The bush 253 is inserted into the elastic bolt 252 and inserted into the insertion portion 211b-2 of the lower base 210 to support the lower end of the elastic bolt 252.

The washer 254 is fitted to the elastic bolt 252 is disposed on the lower surface of the bush 253.

The nut 255 is fastened to the elastic bolt 252 to prevent the separation of the bush 253 and the washer 254 fitted to the elastic bolt 252.

The fixing pin 256 is inserted into the elastic bolt 252 to prevent the nut 255 from loosening and detaching.

It describes the action of the seismic isolator for supporting the structure according to the present invention made of a configuration as described above.

First, a seismic isolator according to the present invention is installed between a bridge (or alternating; not shown) and a bridge deck (not shown).

When the vertical load is repeatedly generated in the bridge in the state as described above, the impact load by the bridge top plate is transmitted to the support unit 230 through the top plate 200, the pad 231 of the support unit 230 is The shock load is absorbed and cushioned to accommodate the shock load, and when the rotational force is applied, the pad 231 is pressed while the support 230 of the support unit 230 rotates in the rotational direction, thereby causing the pad 231. Is deformed to accommodate rotation.

On the other hand, when an earthquake load due to an earthquake is applied to the bridge, the earthquake load transmitted through the bridge is attenuated by the seismic isolation device, which prevents the earthquake load from being transferred to the bridge deck, so that the bridge deck is displaced due to the earthquake load. And risks such as failing.

In more detail, when the seismic load is transmitted to the pier, the lower base 210 and the support unit 230 and the base isolation unit 240 of the seismic isolator fixed to the pier are stainless steel via the fluorine resin plate 242. The seismic load is naturally attenuated by increasing the intrinsic period of the bridge structure while sliding in a state in which it is opposed to the plate 221.

In addition, the upper base 220 supports the bridge top plate without moving together when the lower base 210 moves, so that earthquake loads are not transmitted to the bridge top plate, such as shaking (vibration), misalignment, twisting, and falling. This can be greatly reduced.

In addition, the shock absorbing member 244 disposed between the shear pin 241a of the base isolation unit 240 and the support ring 243, and fitted into the coupling hole 245a of the constraining ring 245, is moved in the lateral direction. It is gradually pressed by the support ring 243 with limited movement by the shear pin 241a and the support piece 222 of the plate 241, and buffers the shock in the transverse direction. The shock absorbing member 244 is quickly restored and pushes the shear pin 241a, which causes the base isolation unit 240 and the support unit 230 and the lower base 210 to return to their initial positions to prepare for the next shock. Done.

On the other hand, the auxiliary buffer member 250 for interconnecting the lower base 220 and the upper base 210 is also deformed due to the movement of the lower base 210, which will be described in more detail, the fixture 251 The head portion of the elastic bolt 252 accommodated in the head accommodating part 251a is naturally rotated along the spherical surface of the head accommodating part 251a, and at the same time, the body portion of the elastic bolt 252 is gradually bent to lower base 210. The expansion of the lower portion 221b-1 abuts the inclined surface to limit the movement of the lower base 210, if the force acts in the opposite direction, the elastic bolt 252 is quickly restored while the lower base 210 and the buffer member Assist in the restoration of (244).

Therefore, according to the present embodiment, by artificially increasing the intrinsic period of the bridge structure through the above-described action, it is possible to greatly reduce the induction of earthquake load to greatly improve the stability of the bridge structure, the impact force in all directions Even if this is applied, the shock absorbing member 244 quickly buffers and alleviates the shock, thereby preventing the shock from being transmitted to the bridge, thereby significantly extending the durability life of the bridge, and furthermore, the elastic bolt 252 has a lower base. Auxiliary effects that can reliably prepare for the next impact due to rapid restoration can also be expected because it assists the restoration of the 210 and the buffer member 244.

In addition, since the shock absorbing member 244 is inserted into the coupling hole 245a of the constraining ring 245 to maintain a fixed position (horizontal state), the shock absorbing member 244 is prevented by the shear pin 241a and the support ring 243. ) Even if the compressed shock absorbing member 244 is separated or distorted and the other side of the shock absorbing member 244 can be prevented from being twisted due to the separation between the shear pin 241a and the support ring 243 to warp or detachment Since it is possible to prevent the malfunction problem, there is an advantage that you can always expect a uniform buffer capacity.

Furthermore, it can be applied to various well-known bridge devices, while maintaining the original functions of the existing bridge devices (for example, rotation, vertical load, and telescopic load) while maintaining impact force against dynamic loads such as earthquakes and wind loads. Since it can buffer and damp vibrations, there is an advantage of significantly extending the life span of the bridge.

In the case of the present embodiment, as an example, the port type has been described in detail by way of example, but this is only one embodiment, and in addition, various well-known (bridge) bearings, for example, pivot spherical Since the present invention can be applied to any number of disc supports and the like, it is not preferable to limit the analysis to this.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the appended claims.

210: lower base 211: pad receiving groove 212: coupling portion
212a: expansion portion 212b: insertion portion 220: upper base
221: stainless steel plate 222: support piece 230: support unit
231: pad 232: sealing ring 233: pedestal
234: sealing member 240: base isolation unit 241: base isolation plate
241a: Shear pin 241b: Fluorine resin plate receiving groove
242: fluorine resin plate 243: support ring 244: buffer member
244a: coupling hole 245: restraining ring 250: auxiliary buffer member
251: fastener 252: elastic bolt 253: bush
254: washer 255: nut 256: fixing pin

Claims (8)

A lower base having a pad receiving groove opened upward;
An upper base installed on the lower base;
Pedestal mounted on the pad with a pad inserted into the pad receiving groove, a sealing ring inserted into the pad receiving groove to secure the pad, a pressing projection facing the pad, and a shear pin receiving groove formed at the upper center thereof. A support unit configured to include a sealing member installed on a circumferential surface of the pressing protrusion to control a rotation moment or a load applied to the upper base and the lower base;
And a seismic isolation unit detachably installed on the support unit and movable against the upper base to cushion the force in the transverse direction.
The method of claim 1,
And an auxiliary buffer member that elastically connects the lower base and the upper base to each other and bends in a moving direction when the lower base or the upper base moves, and assists the restoration by resilience when restoring the lower base or the upper base. A seismic isolator for supporting the structure, characterized in that.
3. The method of claim 2,
The lower base includes:
A pad receiving groove into which the support unit is inserted;
The seismic isolator for supporting the structure, characterized in that it comprises a coupling portion through which the elastic bolt of the auxiliary buffer member is inserted.
The method of claim 1,
The upper base includes:
A stainless plate installed on a bottom surface of the stainless steel plate to be slidably opposed to the base isolation unit;
The seismic isolator for supporting a structure, characterized in that it comprises a support piece for restraining the outer surface of the seismic isolation unit is protruded downward and inserted into the inner side.
The method of claim 1,
The base isolation unit,
A seismic isolation plate having a shear pin inserted into the shear pin accommodation groove and a fluorine resin plate accommodation groove on which a fluorine resin plate is installed;
A fluorine resin plate installed in the fluorine resin plate receiving groove so as to slide against the stainless plate;
A support ring surrounding the circumference of the shear pin;
A shock absorbing member radially installed around the shear pin and supported at both ends by a shear pin and a support ring to buffer a force in a transverse direction;
The damping device for supporting the structure, characterized in that the buffer member is provided with a coupling hole through which the insertion member is inserted between the support piece and the support ring and comprises a restraining ring to block the separation of the buffer member.
3. The method of claim 2,
The auxiliary buffer member,
Fixture fixed to the upper base via a fastening means;
An elastic bolt made of a synthetic resin material having one end portion rotatably fitted to the fixture and the other end portion inserted into the coupling portion of the lower base and having an elasticity therethrough;
A nut which is fastened to the other end of the elastic bolt to prevent separation from the coupling part;
The seismic isolator for supporting a structure, characterized in that it comprises a fixing pin which is inserted into the other end of the elastic bolt to prevent the nut from being separated.
The method of claim 3,
The coupling part is seismic isolator for supporting the structure, characterized in that the expansion portion is further provided with reinforcement.
The method of claim 5,
The shear pin isolating structure supporting apparatus, characterized in that provided with a pair of stepped portion.

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