JP2014047849A - Aseismic base isolation support equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an aseismic base isolation equipment in which a vertical earthquake motion aseismic base isolation part for absorbing low frequency vibration and energy generated at the time of vertical earthquake motion is installed at a lateral earthquake motion aseismic base isolation part for sliding and releasing lateral earthquake motion.SOLUTION: There are provided a lateral earthquake motion aseismic base isolation part 2 in which plural rows of connected sliding bands 20e installed between the overlapped edged disks are pushed out in sequence from the edged disk installed on a ground surface to cause bent resistance generated during lateral rotation and sliding motion to transfer a residual width of earthquake force that could not be slid and calmed down in sequence to the multi-overlapped edged disks and irregular lateral earthquake motion to be slid and calmed down every time to isolate vibration over a slid amount and a vertical earthquake motion aseismic base isolation part 3 installed at the lateral earthquake motion aseismic base isolation part 2, in which energy of low frequency vibration and energy of vertical earthquake motion generated during pushing-up and withdrawal compress semi-solid material installed in a cylinder through a piston 34a and a total repulsion force generated at a plurality of resilient balloons 32c storing compressed gas buried in semi-solid material absorb the energy of vertical vibration so as to insulate absorbed amount of vibration.

Description

The present invention relates to a seismic isolation support device that prevents strong lateral ground motion, low frequency vibration, and longitudinal ground motion.

Many wooden buildings in our country are high in strength for light weight and excellent in functionality. Those that are carefully designed and constructed, such as foundation strength and countermeasures for subsidence, and the addition of walls and braces, have significantly higher seismic performance. However, there is a drawback that it is easy to burn and decay, and there are many cases in which the spread of fire in a wooden building has become a major player in disasters. In Japan, the percentage of wooden buildings is high, and disaster prevention measures are an important issue for earthquake countermeasures. In recent housing conditions, not only vibrations due to earthquakes, but also low-frequency vibrations generated when vehicles pass on nearby roads, the buildings are distorted and the building life is shortened. For this reason, a seismic isolation structure that takes low-frequency vibration into account is required.

2. Description of the Related Art There is known a vibration isolator capable of almost completely removing mechanical vibrations and traffic vibrations in a wooden detached house and the like and being easy to construct as a foundation structure of a building. This is a foundation structure of a building which has a large equivalent damping and is a porous elastic rubber molded body and mainly supports a vertical load of 30 kN / m ² or less, and the foundation structure is a concrete structure. And a rubber pad that damps vibration transmitted from the ground. The rubber pad is made of porous elastic rubber, has a spring constant of 0,49 to 4,7 kN / cm, and 10 to Some have a thickness of 100 mm, and are scattered throughout the bottom surface of the foundation body (see, for example, Patent Document 1).

Conventionally, earthquake resistance that suppresses damage to buildings due to earthquake motion has been made strongly to withstand earthquakes in structures and facilities before the earthquake, and is related to seismic isolation structures, especially absorbing vibrations associated with earthquakes and traffic. There is a seismic isolation structure that can improve the durability of a workpiece such as a building (see, for example, Patent Document 2). In addition, a vibration control device that reduces the vibration of a building that has undergone seismic isolation as a whole building (see, for example, Patent Document 3) uses a device or machine to reduce the earthquake response of a structure and absorbs energy. There are some which reduce displacement due to longer period, such as reducing the seismic force by using the device together and increasing the natural period.

Furthermore, a seismic isolation device for a direct type earthquake (pitch) is known among seismic isolation devices that can protect buildings of all types from large-scale earthquakes to small-scale buildings. In order to protect buildings and structures from earthquakes, they are installed between the foundation and the structure column in combination with a seismic isolation device for rolling, to attenuate the impact of pitching during a direct earthquake. There are air pressure bags of which the floor of the completed building can be freely adjusted horizontally (for example, see Patent Document 4).

JP 2002-257192 A JP 2006-104684 A JP 2009-108630 A JP-A-8-333920

  The conventional anti-vibration technology for preventing vibrations to buildings as described above is a method of reducing the propagation of vibrations from the surroundings to buildings, etc., a method of blocking the path of propagation of vibrations to buildings, etc. The structure / facility is designed to withstand vibration, such as by absorbing the energy of the inside or the route along the way. As a result, pre-earthquake measures are taken to minimize damage to buildings. However, in recent years, the pre-earthquake countermeasures that have been found have deteriorated in strength and cracks after the earthquake, and there are problems such as repair of the earthquake-resistant part in preparation for repeated earthquakes.

In recent years, there has been a demand for a seismic isolation device capable of coping with horizontal seismic motion and direct vertical seismic motion simultaneously. However, there is a demand for a seismic isolation structure that takes low-frequency vibration into account. Therefore, in order to reduce the relative cost and make it earthquake resistant, and to make it semi-permanent with no additional cost, the maintenance-free implementation of equipment that does not use electronic components makes it possible to generate irregular and intense earthquake motion that repeatedly attacks. It is necessary to restore the reliability by securing the corresponding functions and improving the durability.

  The present invention is intended to solve the problems of such a conventional configuration, and realizes a maintenance-free device that is simple and durable without countering natural wonders and repeatedly attacks irregularities. In response to strong and strong lateral seismic motion, the load of the building is supported and the propagation of seismic force is slid along the route. An object of the present invention is to provide an integrated seismic isolation support device that absorbs energy generated at the time of lifting and withdrawing, which has a great influence on low-frequency vibration and buildings, against longitudinal seismic vibrations.

  In the present invention, in order to achieve the above object, the first flanged disk connecting the first outer peripheral ring standing upright along the circumferential portion is fixed on the horizontal ground surface, and one side of the first outer peripheral ring is The first support plate is connected to the first support shaft provided at one end side in the equally divided direction in a horizontally rotating state, and the other side is connected to the center of the back surface of the second flanged disk overlapped with the first flanged disk. There are many assemblies in which the connected slide strips connected to the first support holes that open in the horizontal direction are horizontally rotated and slidable between the above-mentioned stacked second flanged disks. A semi-solid body in which a plurality of elastic balloons containing compressed gas of a predetermined pressure are embedded in the overlapped horizontal seismic vibration isolation section and the horizontal seismic vibration isolation section with an interval between the semi-solid body and the semi-solid body are hermetically sealed A cylinder loaded with a piston to pressurize is installed, and a predetermined distance between the piston and the foundation pillar of the building A vertical seismic motion vibration isolation portion supported by the piston support member to secure the upper, a seismic isolation support device provided with.

Further, the second problem-solving means is the seismic isolation support device according to claim 1, wherein the connecting type slide belt has a central portion with an upper part of the upper surface of the lower circular plate projecting the engagement shaft in the vertical direction. A plurality of sliders joined to the lower surface part of the upper disk provided with a shaft hole in which the engagement shaft is fitted in a horizontal rotation state are connected to each other. Has a drop ring groove that runs parallel to the upper surface of the lower disk and has a cross-section notched in the shape of a U. The shaft hole has a diameter larger than the spacer diameter along the lower surface of the upper disk. The mooring shelf is provided with a C-shaped spacer that fits into the drop ring groove, and the joining range to be joined together with the shaft hole at one end of the upper disc is linearly accommodated. A first guide surface notched over the left rear is provided, and the other end of the lower disc is joined in parallel with the axial direction of the engagement shaft. Crowded put focus range in a straight line Note provided a second guide surface cutaway over the left front, it is obtained by such a form of quantifying bent to the left from a straight state.

A third problem-solving means is the seismic isolation support device according to claim 1, wherein the balloon is formed of a porous elastic rubber molded body having a spring constant of 0, 49 to 4,7 kN / cm, and is circular. It is shaped into a sphere based on slab, or an inflated bud, has a thickness of around 1 to 2 mm, and is provided with a closure plug that closes the inlet from the inside after injecting a compressed gas of a predetermined pressure is there.

The operation of the first problem solving means is as follows. In other words, during the horizontal earthquake motion, in the range of the total skid width, the multiple rows of connected planing belts interposed between the first flanged disk and the second flanged disk are installed on the ground surface. By sequentially pushing out from the single-headed disk, the bending resistance that occurs when it rotates horizontally and slides one after another on the double-sided disk with multiple overlapping of the remaining width of the seismic force that could not be slid. It is reported that the amount of slippage is prevented by slipping the irregular and intense lateral seismic motion that repeatedly attacks. In addition, when low-frequency vibrations and longitudinal seismic vibrations occur, the compressed gas embedded in the semi-solid body is created when the semi-solid body charged in the cylinder is pressurized by the energy generated during thrusting and pulling down. The total repulsive force generated in a plurality of balloons rich in elasticity that encloses the body absorbs the energy of the longitudinal vibration, thereby preventing the absorbed amount.

  In addition, the second problem solving means is that, when a lateral earthquake motion occurs, multiple rows of connected runways interposed between the first and second barbed discs load the building. The bending resistance that occurs when horizontally turning and sliding is prevented by sliding from the first flanged disk installed on the ground surface in order to prevent liberation of the second flanged disk stacked while supporting. In addition to mitigating the impact force when one after another the remaining width of the seismic force that could not be crushed is transmitted to the overlapping discs, the sliding resistance that occurs when horizontally rotating and sliding is By offsetting part of the force, the offset amount is reduced. That is, the effect of enhancing the range of the total skid width of the lateral seismic vibration isolation unit is exhibited.

As described above, in the seismic isolation support device of the present invention, a plurality of rows of connected slide belts interposed between stacked barbed discs are sequentially pushed out from the first barbed disc installed on the ground surface. Therefore, the bending resistance generated during horizontal rotation and sliding conveys the remaining width of the seismic force that could not be slid into the overlapping brazed discs one after another, and the irregular and intense attack repeatedly A horizontal seismic vibration isolator that dampens the amount of slipping and a horizontal seismic vibration isolator installed by sliding the horizontal seismic motion each time. The energy is applied to the semi-solid body inserted into the cylinder via the piston, and the total repulsive force generated in multiple elastic balloons containing the compressed gas embedded in the semi-solid body absorbs the energy of longitudinal vibration. Longitudinal seismic vibration isolator that absorbs the absorbed amount by , With. As a result, the system is maintenance-free, and it can prevent irregular and intense horizontal and low-frequency vibrations and vertical seismic motions that repeatedly strike, and prevent the damage to human life by suppressing the deterioration of buildings.

The perspective view which comprises the seismic isolation support apparatus which shows embodiment of this invention. The state figure which shows the horizontal rotation and sliding state of a horizontal seismic vibration isolation part. The perspective view for demonstrating a vertical seismic vibration isolation part. The perspective view for demonstrating the connection type gliding belt of 2nd Example.

  Within the scope of the gist of the present invention, the present invention includes those to which known techniques are added and those in which known techniques are excluded from the present invention. The scope of the present invention is not limited to the following specific examples.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS.

In FIG. 1, 1 is a seismic isolation support device of the present invention, which is composed of a lateral seismic vibration isolator 2 and a longitudinal seismic motion isolator 3, and will be described from a lateral seismic motion isolator 2 corresponding to lateral seismic motion. A first flanged disk 21a in which a first outer ring 21c rises on the circumference of the first disk 21b is connected to a fixed platen 11a installed on a horizontal ground surface on which the foundation pillar 36 of the building is located. A second flanged disk 22a is superimposed on the first flanged disk 21a, a third flanged disk 23a is stacked on the second flanged disk 22a, and a fourth flanged disk 23a is stacked on the fourth flanged disk 23a. A flanged disk 24a is stacked, and an installation board 31 for mounting the vertical seismic vibration isolator 3 is stacked on the fourth flanged disk 24a.

Reference numeral 21a denotes a first flanged disk, and a plurality of rows of connected slide belts 21e (one connected in the figure) provided in a gap provided between the first flanged disk 21a and the second flanged disk 22a. Is connected to the first support shaft 21d provided on one end side in the equally dividing direction of the first outer peripheral ring 21c, one side of which rises to the circumferential portion, and the like. The side is overlapped with a support hole 21k provided on the other side of the first support plate 21j that is supported at the center of the back surface of the second flanged disk 22a. Moreover, the second flanged disk 22a, the third flanged disk 23a, and the fourth flanged disk 24a are provided in the same manner as the first flanged disk 21a described above, Since they are substantially the same, the reference numerals of the structures having the same members and the same functions are changed in numerical values, the same reference numerals are given at the end, and the description thereof is omitted.

  The shape of the first flanged disc 21a will be described. A fixed plate that is made of steel and is connected to a first outer ring 21c that stands upright on the circumference of the first disc 21b and is installed on a horizontal ground surface. 11a. Bolt holes 11b for anchors that are fixed to the ground are opened in the thick part of the fixed platen 11a. The thickness of the first circular plate 21b is preferably as thin as possible within a range in which the strength can be guaranteed by selecting a material and the like, and the thick portion is not to exceed the top end range of the first outer peripheral ring 21c. The same number of first support shafts 21d that respectively connect one side (the first outer peripheral ring 21c side) of the plurality of rows of connecting slide belts 21e in a rotating state are provided in the equally divided direction.

In FIG. 4, reference numeral 20a denotes a flanged disk, and the standing width of the outer peripheral ring 20c that rises on the circumferential portion of the disk 20b is formed to be the same as the thickness of the connected sliding band 20e. The cross section of the bearing shaft 20d has a cross section toward the axial center parallel to the fitting surface 20m, similar to the engaging shaft 20i of the slider 20s constituting the connecting sliding belt 20e. It is provided with a falling ring groove 20q cut out in the shape of the letter. The surface of the disk 20b of the flanged disk 20a is treated so that it becomes smooth by electric discharge machining so that excessive sliding resistance does not occur when the articulated slide belt 20e rotates and slides horizontally. Is done. The second brazed disk 22a is also formed in the same manner as the first brazed disk 21a, and the back surface is subjected to electric discharge machining so as to be as smooth as the front surface. The plate 23a and the fourth flanged disk 24a are also formed and processed with the same members as the first flanged disk 21a and have the same function.

Here, the support plate 20j is a disk type, and the same number of support holes 20k that respectively connect the other side (support plate side) of the plurality of rows of connected slide belts 20e in a rotating state are opened.
The upper layer of the support hole 20k is provided with a mooring shelf 20n cut to a diameter larger than the diameter of the C-shaped spacer 20o parallel to the lower surface of the support plate 20j, and the mooring shelf 20n has an outer peripheral surface below the glans hem of the engaging shaft 20i. 20l is provided with a drop ring groove 20q having a U-shaped cross-section cut toward the axis parallel to the fitting surface 20m, and the C-shaped spacer 20o retained on the mooring shelf 20n is expanded to fit into the drop ring groove 20q. To do. The thickness of the support plate 20j is the same as the axial length of the support shaft 20d and the engagement shaft 20i.

Then, with respect to the first support shaft 21d provided on one end side in the equally divided direction of the first outer peripheral ring 21c that connects the one side of the connecting type slide belt 21e in a rotating state with the first flanged disc 21a as a stationary system. Thus, the position where the other side of the connecting type slide belt 21e, which is the relative direction, is connected to the rotating state is the first support hole 21k opened to the other side of the first support plate 21j. Thereby, the remaining width of the seismic force that could not be slid can be transmitted to the first support plate 21j in a counterclockwise manner.

With the above-described configuration, the multiple rows of connected planing belts 21e interposed between the second flanged disk 22a stacked on the first flanged disk 21a during the horizontal earthquake motion are installed on the ground surface. By being sequentially pushed out from the one-sided disk 21a, the bending resistance that occurs when horizontally rotating and sliding is a flanged disk 22a in which the remaining width of the seismic force that could not be slid is repeatedly overlapped, 23a, 24a can be reported one after another, and the irregular and intense lateral earthquake motion that repeatedly attacks can be slid every time. In addition, the remaining width of the seismic force that the uppermost fourth circular plate 24a could not be slid is the vertical seismic motion seismic isolation installed in the lateral seismic seismic isolation unit 2 through the stacked installation panel 31. Reported to Part 3.

Next, the longitudinal seismic isolation part 3 will be described. A cylinder 32a in which a semi-solid body 32b and a piston 34a are inserted is installed in the lateral seismic isolation part 2, and a compressed gas having a predetermined pressure is applied to the semi-solid body 32b. A plurality of balloons 32c are embedded at intervals, and a building load is applied via a piston 34a inserted from above. The cylinder 32a and the building are supported by the piston support 35a so that a predetermined distance is provided between the piston 34a and the foundation column 36 of the building so that the cylinder 32a does not contact the building.

In FIG. 3, reference numeral 32a denotes a cylinder having a cylindrical container structure, which requires high strength and high rigidity. Therefore, medium carbon steel forged with special steel is used. Further, a building load is applied to the charged semi-solid body 32b via the piston 34a, and the inner surface 32d of the cylinder 32a is always in a pressurized state. In addition, the device is required to have sufficient strength to withstand the energy generated at the time of thrusting and pulling out, but the device is also required to be downsized. It is desirable that the bore diameter and stroke length of the cylinder 32a be as small as possible from each of the 34a and the semi-solid body 32b.

The semi-solid body 32b is a jelly-like substance, and when energy generated at the time of lifting and pulling is applied via the piston 43a, the cylinder 32a passes through a slight gap formed by the piston ring 34c attached to the piston 43a. In order to prevent leakage to the upper part of the body, it can be prevented by making a substance that does not flow by itself. This jelly-like substance may be grease produced from petroleum.

The “balloon” described in the claims contracts instantly without the compressed gas contained in the balloon 32c leaking out to the semi-solid body 32b side when energy generated at the time of pushing and pulling is applied. It is requested to do. Moreover, an expansion function is required that instantaneously expands the capacity when released from contraction. Therefore, the material is a material excellent in oil resistance, organic solvent resistance, and compression resistance, and it is necessary that the material does not deform itself and that it does not undergo plastic deformation even during long-term compression. In addition, from the need to have resilience, 0, 49 to 4,7 kN / cm
Those formed from a porous elastic rubber molded body having a spring constant of The balloon 32c rich in elasticity can be regularly expanded and contracted in combination with the compressed gas by being embedded in the semi-solid body 32b charged in the cylinder 32a at intervals.

The balloon 32c has a thickness of about 1 to 2 mm when an arbitrary surface area as an energy absorbing material for low-frequency vibrations and longitudinal earthquake motions is 20 square centimeters. If the porosity of the porous elastic rubber molding is less than 5%, the equivalent damping coefficient becomes small and low-frequency vibration cannot be removed. If the porosity exceeds 50%, the compressive strength is insufficient. In the range of 5 to 50%, the porosity is adjusted so that the strain can be 5 to 15%. Further, a closing stopper for preventing leakage is fitted from the inside to an inlet into which a compressed gas of a predetermined pressure is injected.

The piston 34a is formed in the same manner as a piston made of aluminum alloy that is generally used for engines. Further, in order to maintain neutrality, the piston ring 34c that is in airtight contact with the inner surface 32d of the cylinder 32a is fitted in the ring grooves 34b provided in the upper, middle, and lower stages, respectively, and the reciprocating piston 34a is moved to the cylinder 32a. Even when it is tilted, the tilt is always corrected. In addition, the semi-solid body 32b that is always placed under pressure reaches the upper part of the cylinder 32a through a slight gap created by the piston ring 34c, so that when additional pressure is applied to the semi-solid body 32b, the piston 34a An elastic rubber ring 33 having a lambda-shaped cross section that expands and closes the gap is provided at the top portion of the. The piston ring 34c is made of PTFE (tetrafluoroethylene resin) containing a filler.

In the piston support 35a, the column fixing plate 35e provided on the top surface 35c and the foundation column 36 are connected by fastening bolts so as to support the foundation column 36 of the building. Also, since it is necessary to prevent the cylinder 32a and the building from contacting or colliding when the piston 34a reciprocates, the piston support 35a is a piston from the tip to the end of the piston 34a. It is made of aluminum alloy that is 5/2 times the stroke or more and that is short in terms of compression strength.

Here, from the viewpoint of compression strength and flexibility, the form in which the piston support 35a and the piston 34a are connected is a method in which a chrome-plated sphere 35b is dropped into a hemispherical aluminum alloy tray 34e. A split spacer 34h for preventing the sphere 35b from being released is placed on the upper part of the tray 34e. To prevent this separation, a tapered wall surface 34d is formed which shrinks from the opening opened on the upper surface of the cylinder 32a toward the tray 34e, and a stopper groove 43f into which the separation prevention ring 34g is fitted is formed on the tapered wall surface 34d. This stopper groove 4
In 3f, a separation preventing ring 34g is mounted after the ring contour is shrunk so as not to provide a gap with the divided spacer 34h.

With the above configuration, during low-frequency vibration and longitudinal earthquake motion, energy generated during thrusting and withdrawal is embedded in the semi-solid body 32b when the piston 34a pressurizes the semi-solid body 32b inserted into the cylinder 32a with a time difference. The total repulsive force generated in the plurality of balloons 32c rich in elasticity containing the compressed gas absorbed absorbs the energy of longitudinal vibration.

The operation of the above configuration will be described below. At the time of the lateral earthquake motion, a plurality of rows of connected slide belts 21e interposed between the first flanged disk 21a and the second flanged disk 22a were installed on the ground surface within the range of the total skid width. By being sequentially pushed out from the first flanged disk 21a, the bending resistance generated when horizontally rotating and sliding is the flanged disk 22a in which the remaining width of the seismic force that could not be slid by sliding is overlapped. , 23a and 24a one after another, and the irregular and intense lateral seismic motion that repeatedly attacks can be slid each time, so that the amount of sliding can be prevented.

In addition, when low-frequency vibrations and longitudinal seismic vibrations occur, energy generated during thrusting and pulling down is embedded in the semi-solid body 32b by applying pressure to the semi-solid body 32b charged in the cylinder 32a via the piston 34a. The total repulsive force generated in the plurality of balloons 32c rich in elasticity containing the compressed gas absorbed absorbs the energy of the longitudinal vibration, so that the absorbed amount can be prevented from vibration.

Next, an embodiment of the second invention will be described with reference to FIGS.

In FIG. 4, 20e is a connection type slide belt, and its shape will be described in detail. An engagement shaft 20i protruding vertically is provided at the center of the upper surface of the lower disk 20h, and a shaft hole 20g into which the engagement shaft 20i is fitted in a rotating state is opened at the center of the upper disk 20f. The slider 20s is formed by joining the lower surface part of the upper disk and the upper surface part of the lower disk 20h. Then, the engagement shaft 20i provided on the lower disk 20h is fitted into the shaft holes 20g opened in the upper disk 20f on the connection side so that the connection type slide belt 20e has a predetermined connection length. A number of sliders 20s are connected to each other.

The connecting type slide belt 20e has an upper disk 20f on the upper layer part of the shaft hole 20g so that the engaging shaft 20i of the lower disk 20h fitted therein does not fall off from the shaft hole 20g opened to the upper disk 20f on the connection side. The mooring shelf 20n is cut to a diameter larger than the spacer diameter parallel to the lower surface (fitting surface 20m) of the upper surface of the lower disk 20h on the outer peripheral surface 20l below the glans hem of the engaging shaft 20i. 20m) is provided with a drop ring groove 20q cut out in a U-shape toward the axis parallel to the center. As a result, when the engagement shaft 20i is fitted into the shaft hole 20g, the C-shaped spacer 20o retained on the mooring shelf 20n is temporarily expanded and fitted into the drop ring groove 20q provided in the engagement shaft 20i. .

One side of the connecting type slide belt 20e is provided on the support shaft 20d when the support shaft 20d provided on one end side of the rising outer ring 20c is fitted in the shaft hole 20g opened in the upper disk 20f. The C-shaped spacer 20o retained on the mooring shelf 20n is temporarily expanded and fitted into the drop ring groove, while the other side is fitted into a support hole 20k in which the engagement shaft 20i opens on the other side of the support plate 20j. At this time, a C-shaped spacer retained on a mooring shelf provided on the support plate 20j is temporarily expanded and fitted into the drop ring groove 20q provided on the engagement shaft 20i. As a result, the first flanged disc 2
1a and second flanged disk 22a, second flanged disk 22a and third flanged disk 23a, third flanged disk 23a, fourth flanged disk 24a, and fourth flanged disk 24a The installation disks 31 are connected to each other.

The slider 20s is made of a sintered alloy or cast iron, and a part of the back surface of the upper disk 20f and a part of the surface of the lower disk 20h are joined, and one end of the upper disk 20f is joined to one end of the upper disk 20f. A notched first guide surface 20p is provided so that the joining range to be joined is contained in a straight line and is also provided in the shaft hole 20g along the left rear, and the joining range to be joined is linearly provided at the other end of the lower disk 20h. A notched second guide surface 20r is provided so as to extend in the axial direction of the engagement shaft 20i over the left front. As a result, the connecting type slide belt 20e can take a form of bending to the left from the straight line state, and the minimum bending diameter to be bent can be set to the support plate 20j diameter plus 20s3 parallel sliders. .

Here, the sliding surface of the slider 20s is coated with a material having lubricity such as polychloro, trifluoro, ethylene, etc., so that the lubrication is smoothed, and the friction generated on the sliding surface during a lateral earthquake motion. In order to reduce the force, horizontal rotation and smoothing of the sliding are achieved. Also, a porous material such as sintered alloy or growth cast iron is impregnated with lubricating oil,
Since the lubricating oil expands due to frictional heat generated on the sliding surface, the lubricating oil oozes out on the sliding surface.By reducing the frictional force, the lubrication is smoothed and the horizontal rotation and smoothing of the sliding are facilitated. It may be as shown.

In FIG. 2, the operation state of the coupled slide zone 21 e configured as described above will be described. One end side of the first flanged disc 21 a that connects one side of the coupled slide zone 21 e during a lateral earthquake motion ( The bending resistance that occurs when horizontally rotating and sliding ((a) to (c) in FIG. 2) is pushed out from the left intersection of the horizontal axis Y), and the seismic force that the slip wrinkle could not be generated The remaining width is transmitted to the overlapped second flanged disk 22a via the first support plate 21j connecting the other side ((d) to (f) in FIG. 2). In this way, the remaining width of the seismic force that could not be slid can be transmitted one after another to the multiple overlapping brazed disks 23a, 24a ((g) to (i), ( j) to (l)). In addition, the articulated slide belt 21e, which takes the form of quantitative bending, relieves the impact force when transmitting the remaining width of the seismic force one after another to the overlaid circular plates 22a, 23a, 24a, The sliding resistance that occurs during sliding offsets part of the seismic force.

The operation of the above configuration will be described below. During the horizontal earthquake motion, a plurality of rows of connected planing strips 21e interposed between the first flanged disk 21a and the second flanged disk 22a are stacked while supporting the load of the building. By preventing the disc 22a from being released and sequentially pushing it out from the first flanged disc 21a installed on the ground surface, the bending resistance generated when horizontally rotating and sliding cannot prevent slippage. In addition to mitigating the impact force when successively transmitting the remaining width of the seismic force to the brazed discs 22a, 23a, and 24a, the sliding resistance generated when horizontally rotating and sliding is By offsetting a part, the offset amount is reduced. That is, the effect of enhancing the range of the total skid width of the lateral seismic vibration isolation unit 2 is obtained.

1 Seismic isolation support device 2 Seismic isolation base

3 Vertical seismic motion isolation

20e
Articulated runway (common)
21a to 24a First to fourth circular plate 21j First support plate 32a Cylinder 32b Semi-solid body 32c Balloon 34a Piston 35a Piston support Y
Horizontal axis of seismic isolation support device

In the present invention, in order to achieve the above object, the first flanged disk connecting the first outer peripheral ring standing upright along the circumferential portion is fixed on the horizontal ground surface, and one side of the first outer peripheral ring is connect horizontally pivotally to the first support shaft provided at equally divided positions, the first support plate connected to the central portion of the back surface of the second edge with disc other side is superimposed on the circular plate with the first edge, the A plurality of articulated slide strips that are connected to the first support hole that opens to the opposite side across the support shaft and the central part so as to be able to rotate horizontally are horizontally rotated between the stacked second flanged disks. A horizontal seismic motion isolation part with multiple overlapping installations that can be moved and slidable, and a plurality of highly elastic balloons containing compressed gas of a predetermined pressure are embedded in the horizontal seismic isolation part at intervals. A cylinder filled with a semi-solid body and a piston for air-tightly pressurizing the semi-solid body. , A vertical seismic motion seismic isolation unit having a piston support to ensure a predetermined distance or more between the fundamental pillars of the object is a seismic isolation support device provided with.

According to a second aspect of the present invention, there is provided the seismic isolation support device according to claim 1, wherein the connecting type slide belt is configured by connecting a plurality of sliders to each other, and the slider is an engagement shaft at a central portion. that joining the lower surface one part of the upper disc engaging shaft of the other sliding element is provided with a shaft hole fitted into to be horizontally rotatable in the top one portion and the central portion of the lower circular plate projecting in the vertical direction In addition, the outer peripheral surface below the bottom of the glans head of the engaging shaft is provided with a drop ring groove that is parallel to the upper surface of the lower disk and cut into a U-shaped cross section toward the shaft center. A mooring shelf that is cut to a diameter larger than the diameter of the C-shaped spacer is provided in parallel with the lower surface of the disk, and the C-shaped spacer that fits into the drop ring groove is disposed on the mooring shelf, and a shaft hole is formed at one end of the upper disk. a first guide surface lacking to cut the over the fitting range of other sliding element to be joined to elaborate in Note left rear placed on lead straight line parallel to the provided Provided crowded put fitting range of other sliding element to the bonding in parallel to the other end of the lower disc in the axial direction of the engagement shaft on lead straight noted second guide surface cutaway over the left front The articulated slidable belt is configured to bend in a fixed amount from the straight line to the left.

21a is a first flanged disk, and a plurality of rows of connected slide belts 21e (one connected in the figure) in a gap provided between the first flanged disk 22a and the second flanged disk 22a. There is interposed, the articulated sliding band 21e, the one side is pivotally connected to the first support shaft 21d provided at equally divided positions of the first outer peripheral wheel 21c which rises circumference, the other side is overlapped and of the first support plate 21j for supporting the central portion of the back surface of the second edge with a disc 22a, it is pivotally connected to the bearing hole 21k that opens on the opposite side across the first support shaft 21d and the central portion . Moreover, the second flanged disk 22a, the third flanged disk 23a, and the fourth flanged disk 24a are provided in the same manner as the first flanged disk 21a described above, Since they are substantially the same, the reference numerals of the structures having the same members and the same functions are changed in numerical values, the same reference numerals are given at the end, and the description thereof is omitted.

The shape of the first flanged disc 21a will be described. A fixed plate that is made of steel and is connected to a first outer ring 21c that stands upright on the circumference of the first disc 21b and is installed on a horizontal ground surface. 11a. Bolt holes 11b for anchors that are fixed to the ground are opened in the thick part of the fixed platen 11a. The thickness of the first circular plate 21b is preferably as thin as possible within a range in which the strength can be guaranteed by selecting a material and the like, and the thick portion is not to exceed the top end range of the first outer peripheral ring 21c. one side of the same number respectively connected to (first outer peripheral wheel 21c side) rotatably first support shaft 21d of the connecting sliding band 21e of the plurality of rows are provided equally divided positions.

Here, the support plate 20j is of a disk shape, and the same number of support holes 20k that respectively connect the other side (support plate side) of the plurality of rows of connected slide belts 20e so as to be rotatable are opened. The upper layer of the hole 20k is provided with a mooring shelf 20n cut to a diameter larger than the diameter of the C-shaped spacer 20o, which is parallel to the lower surface of the support plate 20j, and the outer periphery below the glans hem of the engaging shaft 20i to be fitted into the mooring shelf 20n. The surface 201 is provided with a drop ring groove 20q having a U-shaped cross-section cut toward the axis parallel to the fitting surface 20m, and the C-shaped spacer 20o retained on the mooring shelf 20n is expanded to fit into the drop ring groove 20q. Match. The thickness of the support plate 20j is the same as the axial length of the support shaft 20d and the engagement shaft 20i.

Then, a first edge with a disk 21a as a static system, with respect to the first support shaft 21d provided at equally divided positions of the first outer peripheral wheel 21c for connecting one side of the articulated sliding band 21e rotatably, other side of the articulated sliding band 21e is a relative direction rotatably connected position, the first support plate 21j, a first bearing hole 21k which opens to the opposite side across the first support shaft 21d and the central portion And Thereby, the remaining width of the seismic force that could not be slid can be transmitted to the first support plate 21j in a counterclockwise manner.

Next, the longitudinal seismic isolation part 3 will be described. A cylinder 32a in which a semi-solid body 32b and a piston 34a are inserted is installed in the lateral seismic isolation part 2, and a compressed gas having a predetermined pressure is applied to the semi-solid body 32b. A plurality of balloons 32c are embedded at intervals, and a building load is applied via a piston 34a inserted from above. Thus also, so that the cylinder 32a and building does not contact, the piston support 35a to secure a predetermined distance are found provided between the foundation pillars 36 of the piston 34a and the building.

In FIG. 4, 20e is a connection type slide belt, and its shape will be described in detail. The engaging shaft 20i projecting in a direction perpendicular to the central portion of the upper surface of the lower disc 20h provided, opening the shaft hole 20g of the engaging shaft 20i of the other Kassoko 20s in the center of the upper disc 20f is fitted into rotatably Then, the slider 20s is formed by joining the lower surface part of the upper disk 20f and the upper surface part of the lower disk 20h. Then, the engagement shaft 20i provided on the lower disk 20h is fitted in the shaft hole 20g opened in the upper disk 20f of the other slider 20s so that the connection type slide belt 20e has a predetermined connection length. in, constructed by connecting a Kassoko 20s together the necessary number to each other.

The articulated slide belt 20e has a lower surface (fitting of the upper disk 20f on the upper layer of the shaft hole 20g so that the engagement shaft 20i of the other slider 20s does not fall out of the shaft hole 20g opened in the upper disk 20f. comprising a mooring shelf 20n that digging further larger diameter than the C-type spacer diameter which parallel to the plane 20 m), parallel to the upper surface (fitting surface 20 m) of the lower disc 20h to glans skirt under the outer circumferential surface 20l of the engaging shaft 20i There is a falling ring groove 20q cut out in a U shape toward the axial center. Thus, the engaging shaft 20i of the other Kassoko 20s is upon fitted in the shaft hole 20g, fitting the C-shaped spacer 20o to the落輪groove 20q was Tomeokika above mooring shelf 20n provided one o'clock extended to .

Further, one side of the connecting type slide belt 20e is provided on the support shaft 20d when the support shaft 20d provided at the equally divided position of the rising outer ring 20c is fitted into the shaft hole 20g opened in the upper disk 20f. While the C-shaped spacer 20o retained on the mooring shelf 20n is temporarily expanded and fitted into the falling ring groove 20q , the other side sandwiches the support shaft 20d and the center portion of the support plate 20j on the other side. in upon fitted into bearing holes 20k which opens to the opposite side, the落輪groove 20q provided on the engaging shaft 20i of the C-type spacer 20o which Tomeokika mooring shelf 20n provided in the support plate 20j temporarily extended by fitting Te, first edge with circular plate 21a and the second edge with a circular plate 22a, a second edge with a circular plate 22a and the third edge with the disc 23a, the disc 23a and the fourth edge with the third edge Attached disk 24a, fourth flanged disk 24a and installation circle 31 are respectively connected.

The slider 20s is made of a sintered alloy or cast iron, and a part of the back surface of the upper disk 20f and a part of the surface of the lower disk 20h are joined, and one end of the upper disk 20f is joined to one end of the upper disk 20f. crowded put fitting range of other Kassoko 20s joining on lead straight noted over the left rear is provided a first guide surface 20p of cutaway to parallel to the shaft hole 20g, the other end of the lower disc 20h is crowded put fitting range of other Kassoko 20s joining on lead straight noted over the left front is provided with a second guide surface 20r of cutaway to parallel to the axial direction of the engaging shaft 20i. As a result, the connecting type slide belt 20e can take a form of bending to the left from the straight line state, and the minimum bending diameter to be bent can be set to the support plate 20j diameter plus 20s3 parallel sliders. .

Claims (3)

A first support in which a first flanged disk connected with a first outer peripheral ring standing upright along a circumferential portion is fixed on a horizontal ground surface, and one side is provided at one end side in the equally divided direction of the first outer peripheral ring. Connected to the shaft in a state of horizontal rotation, the other side is horizontal to the first support hole that opens to the other side of the first support plate that connects to the center of the back surface of the second flanged disk that is superimposed on the first flanged disk. Lateral seismic motion isolation part with multiple overlapping installations, each of which is connected to the above-mentioned second flanged disk so as to be able to rotate and slide horizontally. When,
The horizontal seismic motion isolation part was charged with a semi-solid body in which a plurality of elastic balloons containing compressed gas of a predetermined pressure were embedded at intervals, and a piston for hermetically pressurizing the semi-solid body. A longitudinal seismic isolation part supported by a piston support body, in which a cylinder is installed and a predetermined distance or more is secured between the piston and the foundation pillar of the building,
A seismic isolation support device characterized by comprising: The seismic isolation support device according to claim 1,
An upper stage disk in which the connecting type slide belt is provided with a shaft hole in which the engagement shaft is fitted in the horizontal rotation state in the central part and a central part of the upper stage part of the lower stage disk in which the engagement shaft protrudes in the vertical direction. A plurality of sliders joined to the lower surface part of the lower surface of the engagement shaft are connected to each other, and the glans hem lower outer peripheral surface of the engagement shaft has a cross section parallel to the upper surface of the lower disk and directed to the axis. A drop ring groove cut out in a U-shape is provided, and a mooring shelf that is cut along the lower surface of the upper disk and is cut to a diameter larger than the spacer diameter is provided on the surface layer portion of the shaft hole. A first guide surface in which a C-shaped spacer that fits into the groove is disposed, and the joining range to be joined along the shaft hole is linearly confined at one end of the upper disc and is cut out to the left rear. The other end of the lower disk is parallel to the axial direction of the engagement shaft and the joining range to be joined is contained in a straight line and is still left forward The second guide surface notching provided I, seismic isolation support device, characterized in that is adapted to take the form of quantifying bent to the left from a straight state. The seismic isolation support device according to claim 1,
The balloon is formed from a porous elastic rubber molded body having a spring constant of 0, 49 to 4,7 kN / cm, and formed into a sphere based on a circle or an inflated bud, A seismic isolation support device having a thickness before and after and provided with a stopper plug for closing an injection port from the inside after injecting a compressed gas having a predetermined pressure.