KR101686763B1 - Isolator having anti-uplifting function - Google Patents

Isolator having anti-uplifting function Download PDF

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Publication number
KR101686763B1
KR101686763B1 KR1020160000769A KR20160000769A KR101686763B1 KR 101686763 B1 KR101686763 B1 KR 101686763B1 KR 1020160000769 A KR1020160000769 A KR 1020160000769A KR 20160000769 A KR20160000769 A KR 20160000769A KR 101686763 B1 KR101686763 B1 KR 101686763B1
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KR
South Korea
Prior art keywords
bearing block
block
upper plate
guide
guide block
Prior art date
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KR1020160000769A
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Korean (ko)
Inventor
조영철
방인석
지용수
백준호
이찬영
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조영철
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Priority to KR1020160000769A priority Critical patent/KR101686763B1/en
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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00—Structural or constructional details of bridges
    • E01D19/04—Bearings; Hinges
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00—Structural or constructional details of bridges
    • E01D19/04—Bearings; Hinges
    • E01D19/042—Mechanical bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Vibration Prevention Devices (AREA)

Abstract

Disclosed is a vibration isolation device which has the same resistance performance with respect to all horizontal directions, a small size with a recovery function, and a negative reaction resistor function. The vibration isolation device comprises: an upper plate which is installed at a lower surface of an upper structure; a lower plate which is installed on a support structure for supporting the upper structure; a bearing block which touches a lower surface of the upper plate by surface and allows a horizontal displacement of the upper plate; an elastic member which elastically supports the bearing block; a negative reaction resistor pin which penetrates the elastic member in a vertical direction, wherein one end of the negative reaction resistor pin is fixed at one among the lower plate and the bearing block while the other end is held by a holding portion formed at the other of the lower plate and the bearing block such that the bearing block is inclined while preventing the bearing block from being lifted upwards; first negative reaction resistor bars which are arranged left and right under the bearing block or by penetrating the bearing block, wherein both ends of the first negative reaction resistor bars protrude to left and right sides from the bearing block; and a guide block which extends downwards from the upper plate; and a first holding bump which is installed at the guide block and, when the upper plate is lifted upwards, prevents the upper plate from being lifted upwards by holding the upper plate at both ends of the first negative reaction resistor bar.

Description

[0001] Isolator having anti-uplifting function [

The present invention relates to an improvement of a seismic system, and more particularly, to an improvement of an seismic system that elastically supports a load of an upper structure to a substructure while permitting horizontal displacement between the support structure and the upper structure due to an earthquake or the like.

In general, a seismic isolation device is an apparatus installed between a support structure and an upper structure so that an upper structure such as a top plate, which is a slab structure of a bridge, is properly supported on a supporting structure such as a bridge supporting it, There are various types and functions depending on the support load.

Some of the teaching apparatuses are provided at the fixed ends of bridges so as to elastically support only the upward and downward loads of the upper structure and do not allow the upper structure to move in the horizontal direction. However, The installed structure permits thermal expansion or thermal contraction of the supported upper structure and slides within a limited range to buffer and absorb the dynamic load acting in the horizontal direction due to wind pressure, running, stopping, earthquake, etc. of wind, Sometimes the structure is allowed to move in the horizontal direction to provide an isolation function.

In general, a seismic isolation device having a function to resist a negative reaction force takes a form of a scissor or a cross. 12 and 15 of US2006 / 0174555 A1. When the upper structure to be supported is moved in only one direction of the throttling direction or the direction perpendicular to the throttling direction with respect to the lower structure, When the upper structure simultaneously moves in the direction perpendicular to the throttling direction and the throttling direction, since the height of the upper structure is simultaneously increased, the bi-directional resultant force acts to increase the resistance, so that the resistance characteristics in all directions are not the same. There is a problem that it occupies a large area.

For the isolation devices that have the same resistance characteristics in all directions and occupy a relatively small area, registration number 10-0757749 (structure isolation device), 10-1383506 (isolation device with no restoration area removed), 10-1327566 (Hereinafter referred to as " pre-registered invention ") of the present invention. Pre-registration The same type of isolation device as the invention is installed in a place where the anti-resisting function is not needed because it has excellent seismic performance but does not have a negative-reaction resistance function. Where a negative reaction force function is required, it shall be installed with a separate device providing negative reaction force function.

In the seismic device of the same type as the line registration invention (aka EQS), the upper plate fixed to the bottom of the upper structure is installed in a much larger area than the lower plate fixed on the upper surface of the lower structure, and the upper plate causes horizontal displacement. It is difficult to install resistive components. Particularly, since the horizontal position between the upper plate and the lower plate is changed in the forward and backward directions and left and right, it is not possible to install a component resistant to the negative reaction force in the bidirectional movable end, which requires horizontal displacement in both directions of the throttling axis and the orthogonal axis. In fact.

An object of the present invention is to provide an isolation device having the same resistance characteristics in all horizontal directions but also having a negative-reaction-resistance function.

Another object of the present invention is to provide an isolation device having a small area but excellent seismic performance and also having a negative-reaction-resistance function.

It is still another object of the present invention to provide an isolation device that has the same resistance characteristics in all the horizontal directions, occupies a small area, has excellent isolation performance, has a negative-reaction-resistance function, and has a restoration performance.

The present invention provides a seismic isolation device having a negative-reaction-resistance function, the seismic isolation device comprising: a top plate part installed on a bottom surface of an upper structure; A lower plate installed on a supporting structure for supporting the upper structure; A bearing block which permits horizontal displacement of the upper plate portion in a state in which the upper surface is in surface contact with the lower surface of the upper plate portion; An elastic body elastically supporting the bearing block; One end of the elastic block is fixed to one of the lower plate and the bearing block and the other end is hooked on a retaining portion formed on the other of the lower plate and the bearing block so that the bearing block is lifted upward A sub-reaction resistance pin which allows the tilting of the bearing block while preventing the sub- A first sub-reaction force resistance bar disposed laterally from the lower side of the bearing block and having both ends protruded laterally from left and right sides of the bearing block; A guide block extending downward from the upper plate portion; And a first latching protrusion installed on the guide block and engaged with both ends of the first sub-reaction force resisting bar to prevent the upper plate from being lifted upward when the upper plate is lifted upward,
The guide block and the first engaging jaw are moved in the forward and backward directions in a state of being in contact with the first sub-
As shown in FIG. 3, the first sub-reaction force resistance bar is inserted into the guide groove and protruded downward from the bottom surface of the bearing block, It is installed so as not to move forward and backward,
Wherein the first sub reaction force resistance bar and the guide groove are formed in a rectangular cross section and a sliding member is provided on the upper surface and both side surfaces of the first sub reaction force resistance bar and the inner surface of the guide groove.

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Preferably, the elastic members are separated from each other at an interval in front and back, and the sub-reaction force resisting fins are provided for each of the separated elastic members, and the first sub-reaction resistance bar passes through between the elastic members separated before and after.

And the lower plate portion may be provided so as to support the elastic members separated in the front and rear directions and spaced apart from each other.

It is preferable that a rotation supporting groove is formed at both ends of the first auxiliary reaction force resistance bar and a rotation supporting body is provided in the rotation supporting groove for rotatably supporting a surface in surface contact with the inner surface of the guide block.

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An elastic mechanism may be provided between the bearing block and the guide block to elastically support the bearing block and the guide block while allowing the guide block to move back and forth.

The guide block is installed on the left and right and front and rear sides of the bearing block at intervals along the entire circumference thereof and elastically supports the bearing block and the inner surface of the guide block on all four sides of the bearing block, An elastic mechanism allowing front, rear, and left and right movement of the front and rear wheels can be provided.

At this time, an elastic body for elastically supporting between the bearing block side surface and the inner surface of the guide block may be provided on the outer peripheral surface of the first sub-reaction force resistance bar protruding laterally from both sides of the bearing block.

Wherein the guide block is disposed at an interval along the front and rear sides of the bearing block and is disposed at a position below the bearing block or through the bearing block so as not to be in contact with the first minor- A second auxiliary reaction force bar protruding in both forward and backward directions and a second auxiliary reaction force bar provided on the guide block and hooked to both ends of the second auxiliary reaction force resistance bar when the upper plate is lifted upward to prevent the upper plate from being lifted upward And can have a second stopping jaw.

If necessary, an elastic mechanism may be provided between the bearing block and the guide block to elastically support the bearing block and the guide block while allowing the guide block to move back and forth, left and right, or back and forth and left and right.

The outer peripheral surface of the first sub-reaction force resistance bar projected on both lateral sides of the bearing block and / or the outer peripheral surface of the second sub-reaction force bar protruding in both lateral directions before and after the bearing block, And an elastic body for elastically supporting the inner surface of the guide block.

According to the present invention, it is possible to obtain a seismic isolation device having a negative resistance resistance function with the same resistance performance in all horizontal directions.

According to the present invention, it is possible to obtain an isolation device having the same resistance performance in all the horizontal directions, a small area, a restoration performance, and a negative-reaction-resistance function.

1 is an exploded perspective view of a seismic isolation device having a negative-reaction-resistance function according to the present invention,
Figure 2 is a cross-sectional view according to II of Figure 1,
Fig. 3 is a longitudinal sectional view taken along the line JJ in Fig. 1,
Fig. 4 is a plan view showing a state in which the upper plate is removed,
Fig. 5 is a view showing a modification of Fig. 4,
Fig. 6 is a view showing another modification of Fig. 4,
FIG. 7 is a view showing a modification of FIG. 3,
FIG. 8 is a plan view showing still another modification of FIG. 3. FIG.

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

2 is a cross-sectional view taken along line II in FIG. 1, FIG. 3 is a longitudinal sectional view taken along line JJ in FIG. 1, and FIG. 4 is a cross-sectional view taken along the line II- FIG.

1 to 4, an isolation device 100 having a negative-reaction-resistance function according to the present invention has a top plate 110 installed on a bottom surface of an upper structure. On the bottom surface of the upper plate 110, a sliding member SM1 made of a stainless steel plate or the like is preferably provided. The upper plate 110 is provided with a guide block 111 which extends downward along the bottom edge and protrudes downward.

The guide block 111 is installed on the left and right and front and rear sides of the bearing block 120 with an interval therebetween and is in contact with the inner surface of the guide block 111 on all four sides of the bearing block 120 An elastic mechanism 130 is provided. The elastic mechanism 130 also functions to guide the guide block 111 back and forth and to the left and right while elastically supporting the bearing block 120 and the guide block 111.

The guide block 111 is provided at its lower end with a first locking protrusion 112 protruding inward. The first latching jaw 112 is engaged with both ends of the first sub reaction force resistance bar 140 described later when the upper plate 110 is lifted upward to prevent the upper plate 110 from being lifted upward . The first latching jaws 112 are provided only on the left and right guide blocks 111. The first locking step 112 is preferably installed in the guide block 111 through the bolt B. [ The first stopping protrusion 112 may be installed in the guide block 111 through welding and may be integrally installed with the guide block 111 using a member having an L-shaped cross section.

The base isolation device 100 having a negative-reaction-resistance function according to the present invention is provided with a lower plate portion 150 provided on a support structure for supporting the upper structure. The lower plate portion 150 of this embodiment is separated from the front and back at an interval, and supports the elastic members 160 separated in the front and rear directions. The lower plate portion 150 is provided with a hole 151 having a latching portion 152. The engaging portion 152 is preferably formed as a spherical surface.

An elastic body 160 is provided on each of the two lower plate portions 150 and the bearing block 120 is supported by the two elastic bodies 160. The elastic body 160 elastically supports the load of the upper structure transmitted through the bearing block 120 while buffering the vertical vibration or impact of the upper structure. As such an elastic body 160, a polyurethane disk is used. The elastic member 160 is provided with a hole 161 through which the sub-reaction resistance pin 170, which will be described later, can pass. Each of the sub-reaction force resisting fins 170 is provided for each of the elastic members 160 that are separately arranged in the front and rear directions. The first sub-reaction force resisting bar 140 is installed to pass between the two elastic members 160 separated from each other.

The bearing block 120 is a portion that permits horizontal displacement of the upper plate 110 in a state in which the upper surface of the bearing block 120 is in surface contact with the bottom surface of the upper plate 110 and a sliding material SM2 such as PTFE is provided on the upper surface. The bearing block 120 transfers the load of the upper structure to the elastic body 160, thereby fixing the upper end of the sub-reaction force resisting pin 170. The sub-reaction force resisting pin 170 may be fixed to the lower plate portion 150 and the retaining portion may be provided on the bearing block 120. [ On the side surface of the bearing block 120, a plurality of shaft holes 121 for providing an elastic mechanism 130 are formed at intervals. A guide groove 123 is formed in the bottom surface of the bearing block 120 so that the first auxiliary reaction resistance bar 140 is movably coupled to the guide groove 123. Accordingly, the bearing block 120 guides the movement of the upper structure and the lower structure relative to each other when the upper structure and the lower structure move relative to each other due to an earthquake or the like. Sometimes, these guide grooves 123 may be formed by grooves or cylindrical grooves or holes of semi-cylindrical cross-section.

On the side surface of the bearing block 120, an elastic mechanism 130 is provided through the shaft hole 121. The elastic mechanism 130 is in contact with the inner surface of the guide block 111 to elastically support the bearing block 120 and the guide block 111 while guiding the front and back movement of the guide block 111 Also. The elastic mechanism 130 includes an elastic body 132 mounted on an outer peripheral surface of the shaft 131 and the shaft 131 so as to be able to be retractably mounted and one end of the shaft 131 to prevent the elastic body 132 from coming off, And a separation preventing jaw 133 which is in surface contact with the inner surface of the guide block 111. [ A slip material such as PTFE is attached to the outer surface of the release- The elastic mechanism 130 is preferably installed in the bearing block 120. However, when the limit horizontal movement distance between the bearing block 120 and the upper plate 110 is small, the elastic mechanism 130 may be installed on the guide block 111, Of course it is.

The first partial reaction force resistance bar 140 is inserted into the guide groove 123 from the lower side of the bearing block 120 to the left and right and protrudes from both sides of the bearing block 120 on both sides. The first sub reaction force resistance bar 140 is preferably formed in a rectangular cross section, but may be formed of a semi-cylindrical body or a cylindrical body. Slip materials SM1 and SM2 are preferably provided on the upper surface and both sides of the first sub reaction force resistance bar 140 and on the inner surface of the guide groove 123 in contact with the upper surface. The first auxiliary reaction force resistance bar 140 also serves to guide the upper plate 110 to move in the forward and backward directions in a state where both end portions thereof are in contact with the guide block 111 and the first latching lug 112 . To this end, a contact portion between the first sub reaction force resistance bar 140 and the guide block 111 and a contact portion between the first sub reaction force bar 140 and the first stopper 112 are formed of a stainless steel plate and PTFE And the sliding members SM1 and SM2 are respectively installed.

At the same time, both end portions of the first sub reaction force resistance bar 140 may be installed slightly spaced upward from the first stopping jaw 112 for allowing the inclination.

Particularly, a rotation support groove 141 is formed at the end portion of the first sub-reaction-force resistance bar 140 at a portion contacting the guide block 111, and the rotation support groove 141 is formed in the rotation support groove 141 on the inner surface of the guide block 111 It is preferable that a tilting support body 142 for supporting the surface that is in contact with the surface is provided. The pivotal support body 142 may be made of a material having excellent sliding properties such as PTFE or engineering plastic, or a sliding material such as PTFE may be attached to the contact surface.

The isolation device 100 having the sub-reaction force resistance function according to the present invention has the sub-reaction force resisting pin 170. The sub-reaction force resisting pin 170 is fixed to the bearing block 120 at one end by passing the elastic body 160 vertically and the other end is caught by the retaining portion 152 formed at the lower plate 150, 120 from being heard upward. To this end, a jaw portion 171 is formed at one end of the sub-reaction force resisting pin 170. The upper surface of the jaw portion 171 is formed into a spherical surface so that the bearing block 120 can smoothly pivot up and down so as to be tilted back and forth or right and left and the hole 151 formed in the lower plate portion 150 can be inclined Resistance resistance pin 170 for the sake of convenience. The diameter of the hole 151 may be determined according to the diameter and inclination allowance of the negative-reaction-force resisting pin 170.

The embodiment described with reference to Figs. 1 to 4 is provided at a bidirectional movable end, and provides a restoring force for exerting a force in a direction to return the upper structure supported when the external force is removed.

Fig. 5 is a view showing a modification of Fig. 4. Fig.

The vibration isolating apparatus 100 for use in a place where it is not necessary to provide a restoring force after displacement in the horizontal direction is installed between the bearing block 120 and the guide block 111 by installing the elastic mechanism 130 described in the previous embodiment It can be made in a state where it is not.

The rest are the same as those described with reference to Figs.

Fig. 6 is a view showing another modification of Fig. 4. Fig.

The front and rear guide blocks 111 of the isolation device 100 according to the present invention are installed in close contact with the side surfaces of the bearing block 120 so that the upper structure and the upper plate portion 110 So that the upper structure and the upper plate 110 can be restrained from moving in the front-rear direction. An isolator 100 as shown in Fig. 6 is used for one movable end.

The rest are the same as those described with reference to Figs.

FIG. 7 is a view showing a modification of FIG. 3. FIG.

A semi-cylindrical guide groove 123 may be formed on the bottom surface of the bearing block 120 and the top surface of the first auxiliary reaction resistance bar 140 may be formed as a semicylindrical surface so as to be slightly rotatable.

The rest are the same as those described with reference to Figs.

FIG. 8 is a plan view showing still another modification of FIG. 3. FIG.

The guide groove 123 is formed on the bottom surface of the bearing block 120 at the front and rear positions of the central elastic body 160 and two first partial reaction force resistance bars 140 are provided to constitute the isolation device according to the present invention . One elastic mechanism 130 may be provided on one side of the bearing block 120.

When the bearing block 120 is made large, the elastic body 160, the elastic mechanism 130, and the first sub reaction force resistance bar 140 may be installed in two or more.

The rest are the same as those described with reference to Figs.

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The present invention can be used to create an isolation device having the same resistance to the displacement in the entire horizontal direction and also having a negative-reaction-resistance function.

100: Isolation device 110: Upper plate
111: guide block 112: first stopping jaw
114: second engaging jaw 120: bearing block
123: guide groove 130: elastic member
140: Part 1 Reaction force resistance bar 143: Part 2 Reaction force resistance bar
150: lower plate part 152:
160: elastic body 170: negative reaction force resistance pin
171: jaw

Claims (12)

A bearing block for permitting horizontal displacement of the upper plate portion in a state in which the upper surface is in surface contact with the bottom surface of the upper plate portion, a bearing block for supporting the bearing block for supporting the upper structure, And one end of the elastic member is fixed to one of the lower plate portion and the bearing block and the other end of the elastic member is caught by a retaining portion formed on the other of the lower plate portion and the bearing block And a guide block extending downward from the upper plate portion, the guide block including: a plurality of guide pins;
A first sub-reaction force resistance bar disposed laterally from the lower side of the bearing block and having both ends protruded laterally from left and right sides of the bearing block; And
And a first latching protrusion installed on the guide block and engaged with both ends of the first sub-reaction force resisting bar to prevent the upper plate from being lifted upward when the upper plate is lifted upward,
The guide block and the first engaging jaw are moved in the forward and backward directions in a state of being in contact with the first sub-
The first auxiliary reaction force resistance bar is inserted into the guide groove and protrudes downward from the bottom surface of the bearing block so as to be guided in the left and right directions and can not move forward and backward Installed,
Wherein the first auxiliary reaction force resistance bar and the guide groove are formed in a rectangular cross-sectional shape, and a sliding member is provided on the upper surface and both side surfaces of the first auxiliary reaction force resistance bar and on the inner surface of the guide groove,
A rotation support groove is formed at both ends of the first sub reaction force resistance bar and a rotation support body for supporting the surface of the guide block in contact with the inner surface of the guide block in a rotatable manner to receive rotation of the guide block is provided Wherein the base member has a negative impact resistance function. delete [Claim 2] The method according to claim 1, wherein the elastic members are separated from each other at an interval in front and back, and each of the sub-reaction resistance fins is provided for each of the elastic members separated in the front and rear direction, Wherein the bottom plate is provided with a through-hole. The base isolation device according to claim 3, wherein the lower plate portion is provided so as to support the elastic bodies separated by the front and rear at an interval. delete delete The bearing block according to any one of claims 1, 3, and 4, further comprising: a resilient portion for elastically supporting the bearing block and the guide block between the bearing block and the guide block, And a mechanism is provided in the base member. 2. The bearing block according to claim 1, wherein the guide block is provided at an interval along the front and rear sides of the bearing block, and the bearing block is elastically supported on the four sides of the bearing block between the bearing block and the inner surface of the guide block Wherein an elastic mechanism is provided for allowing the guide block to move back and forth and to the left and right. delete delete delete delete
KR1020160000769A 2016-01-05 2016-01-05 Isolator having anti-uplifting function KR101686763B1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100726164B1 (en) * 2006-03-15 2007-06-13 주식회사 에스코알티에스 Bridge bearing with elastic materials for resisting negative reactions
KR20140117052A (en) * 2013-03-26 2014-10-07 유니슨이테크 주식회사 Earthquake isolation system against vertical negative reaction
KR101548479B1 (en) * 2015-02-11 2015-08-31 조영철 Spring restoring and frictional type seismic isolator

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100726164B1 (en) * 2006-03-15 2007-06-13 주식회사 에스코알티에스 Bridge bearing with elastic materials for resisting negative reactions
KR20140117052A (en) * 2013-03-26 2014-10-07 유니슨이테크 주식회사 Earthquake isolation system against vertical negative reaction
KR101548479B1 (en) * 2015-02-11 2015-08-31 조영철 Spring restoring and frictional type seismic isolator

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