JP2004285590A - Floating preventing device and anchor structure of structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent floating of an upper structure during the operation of a stopper. <P>SOLUTION: This floating preventing device includes: upper and lower hard plates 4, 5; a slider 6 disposed between the upper and lower hard plates 4, 5 and having engagement parts 10, 11 projected in the direction of the outside diameter at both upper and lower ends; and floating preventing members 7, 8 having cylindrical wall parts 12, 13 projected on the hard plates 4, 5 to demarcate a sliding area of the slider 6 and floating preventing piece parts 14, 15 projected from the upper edge and lower edge of the wall parts 12, 13 continuously in the circumferential direction toward the inside diameter. When an earthquake occurs, the upper and lower engagement parts 10, 11 of the slider 6 engage with the floating preventing piece parts 14, 15 in the vertical direction to thereby prevent floating of the upper structure. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【００５７】
【式１】

【００５８】
【発明の効果】
本発明に係る浮き上がり防止装置は、地震発生時に構造物の上部構造と下部構造の相対的な水平方向の変位に応じて、上下の硬質板が相対的に水平方向に変位し、ストッパ装置が機能したときには、滑動体の上下の係合部に、上下の浮き上がり防止部材の浮き上がり防止片部がそれぞれオーバーラップした状態（被さった状態）になる。この状態で、構造物の上部構造に鉛直方向上向きの力が作用すると、浮き上がり防止装置は、構造物の上部構造に作用する鉛直方向の力に対し、滑動体の上下の係合部と、上下の浮き上がり防止部材の浮き上がり防止片部が鉛直方向に係合して、構造物の上部構造が浮き上がるのを防止することができる。
【図面の簡単な説明】
【図１】本発明の第１実施形態に係る浮き上がり防止装置を示す縦断面図。
【図２】図１に示す浮き上がり防止装置の平面図。
【図３】図１に示す浮き上がり防止装置の施工工程を示す平面図。
【図４】図１に示す浮き上がり防止装置の使用状態を示す縦断面図。
【図５】図１に示す浮き上がり防止装置の使用状態を示す縦断面図。
【図６】図１に示す浮き上がり防止装置の使用状態を示す縦断面図。
【図７】構造物のアンカー構造を示す平面図。
【図８】構造物のアンカー構造に用いるストッパ機能を備えた転がり支承装置の一実施形態を示す縦断面図。
【図９】図８に示すストッパ機能を備えた転がり支承装置の使用状態を示す縦断面図。
【図１０】ストッパ機能を備えた浮き上がり防止装置の実施形態を示す縦断面図。
【図１１】ストッパ機能を備えた浮き上がり防止装置の使用状態を示す縦断面図。
【図１２】ストッパ機能を備えた浮き上がり防止装置の変形例を示す縦断面図。
【図１３】ストッパ機能を備えた浮き上がり防止装置の変形例を示す縦断面図。
【図１４】構造物のアンカー構造に浮き上がり防止装置を配設した状態を示す平面図。
【図１５】構造物のアンカー構造に用いる転がり支承装置の一実施形態を示す縦断面図。
【図１６】構造物のアンカー構造に用いる制振装置の一実施形態を示す縦断面図。
【図１７】従来の住宅の上部構造のアンカー構造を示す図。
【図１８】基礎パッキン材を示す図。
【符号の説明】
１ 浮き上がり防止装置
２ 住宅の土台（構造物の上部構造）
３ 基礎コンクリート（下部構造）
４、５ 硬質板
６ 滑動体
７、８ 浮き上がり防止部材
１０、１１ 係合部
１２、１３ 壁部
１４、１５ 浮き上がり防止片部
２２、２３ 弾性緩衝材[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an anchor structure of a structure which is mounted between an upper structure and a lower structure of a structure and fixes the upper structure on the lower structure, and a lifting prevention device used for the anchor structure of the structure. .
[0002]
[Prior art]
A lightweight structure such as a house is constructed on a basic concrete 101 generally called a cloth foundation. When the base 103 (upper structure) of a building (structure) is fixed on the basic concrete 101 (lower structure), for example, as shown in FIG. The base is buried in the base 101, the upper part of the anchor bolt 102 is penetrated through the base 103, and the portion protruding from the upper surface of the base 103 is fixed with the washer 104 and the nut 105.
[0003]
However, if the base 103 is simply fixed on the foundation concrete 101, traffic vibration generated by the traffic of a large vehicle is transmitted from the foundation concrete 101 to the foundation 103 as it is. For this reason, as shown in FIG. 18, there has been a configuration in which a rubber plate 100 is interposed between a base 103 and a foundation concrete 101 to reduce traffic vibration. However, even in this case, the anchor bolt 102 firmly connects the foundation 103 and the foundation concrete 101, and the vibration is transmitted from the foundation concrete 101 to the foundation 103 via the anchor bolt 102 as it is, and the vibration is not reduced so much. No seismic isolation effect was obtained.
[0004]
In addition, such a rubber plate 100 has a function as a base packing material for ventilation of a base part of a house. That is, by arranging a plurality of rubber plates 100 at predetermined intervals between the foundation concrete 101 and the base 103 of the house, the gap between the foundation 103 and the foundation concrete 101 causes Ventilation of the inside can be performed, the flow of air in the foundation concrete 101 is improved, and moisture can be reduced. Further, by cutting the edge between the base concrete 101 and the base 103, there is an effect that the moisture absorbed by the base concrete 101 is not transmitted to the base 103.
[0005]
As a known document indicating the general technical level of this type of basic packing material, the following Patent Document 1 is known.
[0006]
In addition, as a basic packing material that also has a vibration damping function that absorbs vibration caused by traffic and earthquake caused by the traffic of large vehicles such as dump trucks and railway cars, rubber for restoration with circular holes between upper and lower hard plates Japanese Patent Application Laid-Open Publication No. HEI 10-163566 proposes a structure in which a rolling material is provided and a hard sphere is rollably disposed in a hole of a rubber material.
[0007]
[Patent Document 1] JP-A-2001-355350
[Patent Document 2] JP-A-2000-110403
[0008]
[Problems to be solved by the invention]
The base packing material described in Patent Document 1 described above merely sandwiches a rubber material between the upper structure and the lower structure of a structure, and is used for vibrations caused by large vehicles such as earthquakes and dump trucks, and traffic of railway vehicles. Insufficient vibration damping function to absorb traffic vibrations caused by traffic.
[0009]
Further, although the base packing material described in Patent Document 2 can be expected to have a certain vibration damping effect, it is not guaranteed that the hard sphere is located at the center of the hole of the rubber material at the time of installation due to its structure. . For this reason, there is a possibility that the hard sphere is disposed in contact with the inner peripheral surface of the hole of the rubber material, and in such a case, the hard sphere immediately rides on the rubber material during vibration. According to the knowledge of the present inventors, when a hard sphere rides on a rubber material, the rubber material may be damaged at a position where the hard sphere rides, so that a sufficient vibration damping effect cannot be obtained.
[0010]
Also, seismic isolation devices using a combination of laminated rubber and oil dampers are well known, but the laminated rubber and oil dampers used in such seismic isolation methods are limited by the vertical load and horizontal load that one device bears. Because of the size of the equipment and the difficulty in miniaturization due to the structure of the equipment, the equipment is large, the installation cost and the installation space are large, and it is uneconomical for relatively small structures such as ordinary houses, and it is not widely used. Not.
[0011]
As shown in FIG. 7, the present inventors have proposed a rolling bearing device 32 (or a sliding bearing device) as an anchor structure 30 of a structure that is not bulky, inexpensive, has both vibration absorbing performance and a function as a basic packing material, as shown in FIG. Are distributed between the lower structure 3 and the upper structure of the structure so as to support the vertical load of the upper structure of the structure (not shown). A plurality of vibration damping devices 33 each having attached thereto are separately arranged between the lower structure 3 and the upper structure of the structure so as to suppress the torsional vibration of the upper structure of the structure. ing.
[0012]
As a stopper device used for the anchor structure 30 of such a structure, as shown in FIG. 8, the upper and lower structures 3 and 3 are provided respectively on the upper structure 2 and the lower structure 3 of the structure, and have upper and lower surfaces each having a rolling surface on a facing surface. A hard plate 51, 52, a hard sphere 53 sandwiched between upper and lower hard plates 51, 52 and positioned at the center of the rolling surface of the upper and lower hard plates 51, 52; The stopper members 54 and 55 projecting from the peripheral edges of the rolling surfaces of the hard plates 51 and 52 so as to define the rolling area of the hard sphere 53 are provided on the inner peripheral surfaces of the stopper members 54 and 55, respectively. A rolling bearing device 50 having elastic stoppers 56 and 57 and having a stopper function is proposed. In the illustrated rolling bearing device 50 having a stopper function, the hard sphere 53 is moved to the center of the rolling surface of the upper and lower hard plates 51, 52 by positioning members 58, 59 attached to the upper and lower hard plates 51, 52. Is positioned.
[0013]
As shown in FIG. 9, when the upper and lower hard plates 51, 52 relatively move in the horizontal direction during an earthquake, the rolling bearing device 50 having such a stopper function can move the upper and lower hard plates 51, 52 relative to each other. Accordingly, the rolling of the hard sphere 53 rolling between the upper and lower hard plates 51 and 52 is restricted by being sandwiched between stopper members 54 and 55 attached to the upper and lower hard plates 51 and 52, and the upper and lower stopper members 54 and 55 are restricted. Further, the relative horizontal displacement of the upper and lower hard plates 51 and 52 is regulated via the hard sphere 53.
[0014]
The rolling bearing device 50 having the stopper function also serves as a rolling bearing device, and as shown in FIG. 7, all or a part of the rolling bearing device 32 is replaced with a rolling bearing device having the stopper function. Thus, there is an advantage that it is not necessary to separately provide another stopper device.
[0015]
However, the rolling bearing device 50 having the stopper function has a large inertial force acting on the superstructure due to the earthquake, and the horizontal force acting on one device exerts a larger horizontal force than planned at the design stage. In the state shown in FIG. 9, the hard sphere 53 further rides on the elastic cushioning material 57 attached to the lower stopper member 55, or the upper stopper member 54 rides on the hard sphere 53 in the state shown in FIG. Since a force acts on the upper structure 2, a vertical force acts on the upper structure 2 and the upper structure 2 floats. In order to prevent the upper structure 2 from floating, the number of the rolling bearing devices 50 having a stopper function instead of the rolling bearing device 32 may be increased to reduce the horizontal force acting on one device. However, since the rolling bearing device 50 having such a stopper function is more expensive than the normal rolling bearing device 33 having no stopper function, when the number of the rolling bearing devices 50 having the stopper function is increased, the anchor of the structure is increased. The cost of the structure can be expensive.
[0016]
Therefore, an object of the present invention is to prevent the above-described upper structure from lifting in the anchor structure of such a structure.
[0017]
[Means for Solving the Problems]
The lifting prevention device according to the present invention is slidably disposed on the lower hard plate between upper and lower hard plates disposed on surfaces of the structure facing the upper structure and the lower structure, respectively. A sliding body having engaging portions projecting continuously in the circumferential direction at both upper and lower ends, and a cylindrical wall portion protruding from opposite surfaces of the upper and lower hard plates so as to define a sliding area of the sliding body. And a lifting prevention member having a lifting prevention piece portion continuously projecting in the radial direction from the upper edge of the wall portion in the circumferential direction, and the upper and lower hard plates relatively move in the horizontal direction and the sliding body is formed. When sliding to the peripheral edge of the sliding area between the upper and lower hard plates, the lifting prevention pieces of the lifting prevention members attached to the upper and lower hard plates respectively overlap the upper and lower engaging portions of the sliding body, and the upper hard plate. The board rises It is characterized in that to prevent.
[0018]
In this lifting prevention device, in order to reduce the sliding resistance of the sliding body, when the device is disposed between the upper structure and the lower structure of the structure, the device is disposed together with the rolling bearing device or the sliding bearing device to slide. It is preferable to provide a gap between the body and the upper hard plate. In this case, the gap between the sliding body and the upper hard plate is preferably set to 1 mm or more.
[0019]
In order to prevent the sliding body from being damaged by the shear force received from the upper and lower lifting prevention members, when the sliding body is disposed between the upper structure and the lower structure of the structure, it is separately disposed together with the stopper device. When the relative movement of the upper and lower hard plates in the horizontal direction is restricted by the stopper device, the lifting prevention pieces of the upper and lower lifting prevention members overlap with the upper and lower engagement portions of the sliding body, respectively, and slide. It is preferable that the body does not abut both the upper and lower lifting prevention members at the same time in the horizontal direction. In this case, when the sliding body is brought into contact with one of the lifting prevention members, it is preferable to set a gap in the horizontal direction between the other lifting prevention member and the sliding body that does not come into contact with the sliding body to 5 mm or more.
[0020]
In addition, sufficient strength is ensured for the sliding body and the lifting prevention member, and an elastic cushioning material is disposed on the inner peripheral surface of the lifting prevention member and / or the outer peripheral surface of the sliding body. When the structure is moved in the horizontal direction relatively, the upper and lower lifting prevention members are brought into contact with the sliding body, and the lifting prevention device allows the upper structure and the lower structure of the structure to move relative to each other in the horizontal direction. The amount of movement can be regulated, and the lifting prevention device can have a function of a stopper.
[0021]
In addition, since the above-described lifting prevention device is not bulky and can be manufactured at low cost, the rolling bearing device or the sliding bearing device is provided with a lower structure and an upper structure of the structure so as to support the vertical load of the upper structure of the structure. A plurality of vibration damping devices, each of which is provided with a hard plate attached to the upper and lower end surfaces of the high-damping rubber, are disposed at a lower portion of the structure so as to suppress torsional vibration of the upper structure of the structure. The present invention is suitable for a device for preventing floating of an anchor structure of a structure which is dispersed and disposed between a structure and an upper structure.
[0022]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, a lifting prevention device according to an embodiment of the present invention and an anchor structure of a structure using the lifting prevention device will be described with reference to the drawings.
[0023]
As shown in FIG. 1, an uplift prevention device 1 includes upper and lower hard plates 4 and 5 disposed on opposite surfaces of a base 2 (upper structure of a structure) and a foundation concrete 3 (lower structure) of a house. A sliding member 6 slidably disposed on the hard plate 5 and lifting prevention members 7, 8 protruding from a peripheral edge of a sliding region of the sliding member 6 on opposite surfaces of the upper and lower hard plates 4, 5. Have.
[0024]
As shown in FIG. 2, the hard plates 4 and 5 are substantially rhombic plate-shaped members having required hardness and flatness. The upper surface of the lower hard plate 5 is provided with a sliding surface on which the sliding body 6 is disposed. The sliding surface is finished smoothly to ensure smooth sliding of the sliding body 6. The distance D between the upper and lower hard plates 4 and 5 is determined by the height of a separately provided bearing device (rolling bearing device, sliding bearing device) between the base 2 of the house and the foundation concrete 3.
[0025]
The sliding body 6 is a substantially dumbbell-shaped member having a columnar column portion 9 and disk-like engaging portions 10 and 11 continuously protruding in the outer diameter direction at both upper and lower ends of the columnar portion 9 in the circumferential direction. is there. The height H of the sliding body 6 is set lower than the distance D between the upper and lower hard plates 4 and 5, so that the sliding body 6 and the upper hard plate 4 are not in contact with each other, and the resistance of the sliding body 6 to sliding is reduced. are doing. The gap between the upper surface of the sliding member 6 and the lower surface of the upper hard plate 4 may be set to 1 mm or more in order to ensure smooth sliding of the sliding member 6.
[0026]
The upper surface of the lower hard plate 5 serving as a sliding surface and the lower surface of the sliding body 6 may have a small coefficient of friction in order to ensure smooth sliding. For example, those having been subjected to surface treatment such as polishing or resin coating may be used. Good, specifically, polyacetal resin, polyester resin, nylon resin (nylon 6, nylon 66), etc., which have excellent self-lubricating properties and abrasion resistance, or hard plastics such as glass fiber, carbon fiber, asbestos , Calcium carbonate, mica, whisker, etc., or various inorganic fillers such as molybdenum disulfide, carbon powder, solid lubricant such as graphite, metal plate such as stainless steel or synthetic resin plate It is good to use one coated with a fluorine-based resin such as polytetrafluoroethylene or ceramics with a smooth surface.
[0027]
The lifting prevention members 7 and 8 are members that engage with the upper and lower engaging portions 10 and 11 of the sliding body 6 to prevent the upper hard plate 4 from lifting, respectively, and face the upper and lower hard plates 4 and 5. Is attached to each. The lifting prevention members 7 and 8 include cylindrical walls 12 and 13 projecting from the hard plates 4 and 5 so as to define a sliding region of the sliding body 6, and upper and lower edges of the walls 12 and 13. And lifting prevention pieces 14 and 15 that protrude in the inner diameter direction continuously from each other in the circumferential direction.
[0028]
As shown in FIG. 1, the lifting prevention device 1 has a base 2 (a superstructure of a structure) of a house and a foundation concrete 3 (with a sliding body 6 disposed between upper and lower hard plates 4 and 5). Substructure).
[0029]
As shown in FIG. 2, bolt fastening portions 18 and 19 for fastening anchor bolts 16 and 17 are provided on both sides of the upper and lower hard plates 4 and 5 of the lifting prevention device 1. A notch 20 is formed in the first bolt fastening portion 18 on one side along a straight line L connecting the bolt fastening portions 18 and 19 on both sides, and the second bolt fastening portion 19 on the opposite side has a bolt fastening portion on both sides. A notch 21 is formed along a direction orthogonal to a straight line L connecting the lines 18 and 19. More specifically, the notch 21 of the second bolt fastening portion 19 is centered on a predetermined fastening position (for example, a designed bolt fastening position O) of the first bolt fastening portion 18, and has a predetermined bolt pitch (for example, designed). Are formed along an arc C having a radius equal to the bolt pitch P). The widths of the notches 20, 21 of the bolt fastening portions 18, 19 are slightly larger than the diameters of the anchor bolts 16, 17, and the anchor bolts 16, 17 are mounted along the notches 20, 21. It can be detached. In addition, the notches 20 and 21 are formed deeper than designed bolt fastening positions so as to allow for errors during construction.
[0030]
When this lifting prevention device 1 is installed, as shown in FIG. 3, the one-side anchor bolt 16 is attached to the first bolt fastening portion 18 along the notch 20, and as shown by a two-dot chain line in the drawing. It is preferable that the lifting prevention device 1 is rotated, the opposite anchor bolt 17 is attached to the second bolt fastening portion 19 along the notch 21, and the lifting prevention device 1 is fixed with a nut.
[0031]
This lifting prevention device 1 includes a rolling bearing device 32 (see FIG. 15), a sliding bearing device, and a rolling bearing having a stopper function between a base 2 (upper structure of a structure) and a foundation concrete 3 (lower structure) of a house. It is constructed together with the device 50 and the vibration damping device 33 (see FIG. 16), and forms the vibration damping layer 31 between the base 2 and the foundation concrete 3 of the house.
[0032]
When an earthquake occurs, the base 2 of the house and the foundation concrete 3 are relatively displaced in the horizontal direction. As shown in FIG. 4, in the lifting prevention device 1, the upper and lower hard plates 4, 5 are relatively displaced in the horizontal direction according to the relative displacement between the base 2 of the house and the foundation concrete 3. As shown in FIG. 5, the sliding body 6 abuts against one of the upper and lower hard plates 4, 5 and the lifting prevention members 7, 8 (elastic cushioning materials 9, 10) to form the lower hard plate 5. Start slipping over. When the stopper function of the rolling bearing device 50 (see FIG. 9) provided with the stopper function is functioning together, as shown in FIG. 6, the upper and lower engaging portions 10, 11 of the sliding body 6 are provided. In addition, the lifting prevention pieces 14 and 15 of the upper and lower lifting prevention members 7 and 8 are in a state of being overlapped (covered).
[0033]
In this state, in the rolling bearing device 50 (see FIG. 9) provided with a stopper function disposed together, the hard sphere 53 rides on the elastic cushioning material 57 attached to the lower stopper member 55, or the upper or lower member. The force by which the stopper member 54 tries to ride on the hard sphere 53 may act on the base 2 (upper structure) of the house, causing an upward force in the vertical direction. At this time, the lifting prevention device 1 is provided with the upper and lower engaging portions 10 and 11 of the sliding member 6 and the engaging portions 10 and 11 of the sliding member 6 in response to a vertical force acting on the base 2 (upper structure) of the house. The lifting prevention pieces 14 and 15 of the upper and lower lifting prevention members 7 and 8 which are respectively overlapped with each other are vertically engaged to prevent the base 2 (upper structure of the structure) of the house from floating. .
[0034]
In addition, in the lifting prevention device 1 according to this embodiment, the sliding body 6 simultaneously hits both the upper and lower lifting prevention members 7 and 8 in the horizontal direction relative to the stopper device 50 provided together. We do not touch. In other words, as shown in FIG. 9, the relative movement of the upper and lower hard plates 4 and 5 in the horizontal direction is restricted by the stopper device 50, and the sliding body 6 is moved to one of the upper and lower lifting prevention members 7 (8). When it is in contact, a gap S is formed between the other lifting prevention device 8 (7) and the sliding body 6.
[0035]
Thereby, the sliding body 6 is sandwiched between the upper and lower lifting prevention members 7 and 8, and it is possible to prevent a large shearing force from acting on the sliding body 6 or the lifting prevention members 7 and 8. When the sliding body 6 is brought into contact with one of the upper and lower lifting prevention members 7 (8), the distance between the lifting prevention member 8 (7) on the non-contacting side and the sliding body 6 is about 5 mm. The gap S is preferably generated. Further, an elastic buffer may be attached to the sliding body 6 or the lifting prevention members 7, 8 in order to reduce the contact sound when the sliding body 6 and the lifting prevention members 7, 8 hit.
[0036]
Next, a modification of the lifting prevention device will be described.
[0037]
As shown in FIG. 10, the lifting prevention device 1a according to the modified example has an impact when the sliding body 6 collides with the lifting prevention members 7, 8 on the inner peripheral surfaces of the walls 12, 13 of the lifting prevention members 7, 8. And elastic cushioning members 22 and 23 for reducing collision noise. For the elastic cushioning members 22 and 23, an elastic material such as rubber or soft urethane material may be used. In the lifting prevention device 1a, when the stopper function of the rolling bearing device having the stopper function functions, as shown in FIG. 11, the sliding body 6 abuts on both the upper and lower lifting prevention members 7, 8 in the horizontal direction. Thus, in addition to the above-described lifting prevention function, the stopper also functions as a stopper for restricting horizontal displacement of the upper structure and the lower structure of the structure.
[0038]
If the lift prevention device 1a having the stopper function is used, the horizontal displacement of the upper structure and the lower structure of the structure is regulated by the stopper function. Therefore, the horizontal force acting on the rolling bearing device 50 having the stopper function is reduced. Can be reduced. Further, in the rolling bearing device 50 having each stopper function, the horizontal force is reduced, and the force for pushing up the base 2 (the upper structure of the structure) of the house is reduced. The force acting on In addition, since the elastic cushioning members 22 and 23 are provided on the inner peripheral surfaces of the lifting prevention members 7 and 8, the shock and the collision sound when the sliding body 6 and the lifting prevention members 7 and 8 collide can be reduced. Smooth sliding of the sliding body 6 can be ensured. In the lifting prevention device 1a having the stopper function, when the function as the stopper is performed, the sliding member 6 and the lifting prevention members 7, 8 are subjected to a horizontal shearing force. It is necessary to ensure a sufficient strength against the shearing force in 7 and 8.
[0039]
As the lifting prevention device 1a having such a stopper function, an example in which the elastic cushioning members 22 and 23 are provided on the inner peripheral surfaces of the lifting prevention members 7 and 8 has been exemplified. However, the lifting prevention device 1a 'shown in FIG. In addition, the elastic cushioning member 24 may be disposed on the outer peripheral surface of the sliding body 6, and the inner peripheral surfaces of the lifting preventing members 7, 8 and the sliding body 6 as in the lifting preventing device 1a '' shown in FIG. Elastic cushioning members 22, 23, and 24 may be provided on both of the outer peripheral surfaces. When the elastic buffer 24 is provided on the outer peripheral surface of the sliding body 6, the elastic buffer 24 is attached to the upper and lower hard plates 4 and 5 so that the elastic buffer 24 does not hinder the sliding of the sliding body 6. It is good to arrange so that it does not touch.
[0040]
Next, an embodiment of a structure anchor structure 30 'using the lifting prevention device 1 will be described.
[0041]
As shown in FIG. 14, the anchor structure 30 'of the structure includes a plurality of rolling bearing devices 32 (or sliding bearing devices) and stoppers so as to support the vertical load of the house (superstructure of the structure) substantially evenly. The rolling bearing device 50 having the function is dispersed and arranged, and the plural vibration damping devices 33 are dispersed and arranged so as to cooperate to suppress the torsional vibration of the house (superstructure of the structure). Further, a lifting prevention device 1 is provided between a base 2 of a house and a foundation concrete 3.
[0042]
The lifting prevention device 1 according to the present invention can be manufactured and installed at low cost and is not bulky, so it is suitable for use in the anchor structure 30 ′ of the above-described structure. By disposing the prevention device 1 between the upper structure and the lower structure of the structure, it is possible to prevent the upper structure of the structure from rising during an earthquake.
[0043]
In addition, the position at which the lifting prevention device 1 is disposed can be arbitrarily determined. However, it is preferable that the distance between the point of force for pushing up the upper structure of the structure and the lifting prevention device 1 for regulating the force is shorter. In addition, the force acting on the sliding body 6 and the lifting prevention members 7 and 8 of the lifting prevention device 1 in the vertical direction is reduced, so that the number of the lifting prevention devices 1 to be installed can be reduced, and equipment costs can be reduced. Therefore, it is preferable that the lifting prevention device 1 be disposed near the rolling bearing device 50 having a stopper function.
[0044]
If this lifting prevention device 1 is provided, even if a vertical force acts so as to lift the upper structure 2 of the structure by the rolling bearing device 50 having a stopper function, the upper structure 2 of the structure is maintained. Without being lifted up, the vibration damping function of the vibration damping device 33 is efficiently exerted against the shaking of the earthquake.
[0045]
Hereinafter, the rolling bearing device 32 and the vibration damping device 33 used for the anchor structure of the structure will be described.
[0046]
For example, as shown in FIG. 15, the rolling bearing device 32 includes a hard sphere 41, a cylindrical positioning member 42 that houses the hard sphere 41, and a hard plate that vertically sandwiches the hard sphere 41 and the positioning member 42. The one provided with 43 and 44 is used. As shown in FIG. 16, for example, the damping device 33 includes a cylindrical damping member 45 made of a rubber-like elastic body made of high-damping rubber, and hard plates 46 and 47 sandwiching the damping member 45 vertically. A rubber covering material 48, hard plates 46 and 47 are respectively vulcanized and bonded to the upper end and the lower end of the vibration damping member 45, and the outer peripheral surface of the vibration damping member 45 is covered with the rubber covering material 48. Used.
[0047]
Since the rolling bearing device 32 and the vibration damping device 33 are not bulky, they are suitable for an anchor structure of a structure having a function of a base packing. Note that, instead of the rolling bearing device 32, a sliding bearing device (not shown) may be used. Specifically, the vibration damping device 33 is disposed such that the eccentricity of the vibration damping layer 31 between the upper structure 2 and the lower structure 3 of the structure is within 3%. Note that the eccentricity of the vibration damping layer 31 between the upper structure 2 and the lower structure 3 of the structure may be calculated by Expression 1 described later. Further, the rolling bearing device 50 having a stopper function (see FIGS. 8 and 9) also has a function as a rolling bearing device for supporting the vertical load of the upper structure, and supports the vertical load in the anchor structure of the structure. It is used for a part or all of the bearing device.
[0048]
The hard sphere 41 used for the rolling bearing device 32 is a sphere having a required hardness and sphericity, and may be manufactured by, for example, rolling a steel material roughly processed into a roughly spherical shape. In the rolling process, a steel material roughly processed into a roughly spherical shape is vertically sandwiched between polishing plates, and is rolled between the polishing plates to form a spherical shape while removing distortion on the surface of the steel material. The hard sphere 41 increases in hardness due to the work hardening caused by the rolling process. According to this rolling process, it is possible to obtain a hard sphere 41 having hardness equal to or higher than HRC20 and a high sphericity by using an inexpensive steel material such as S15C, thereby reducing the cost of parts of the hard sphere 41. be able to. It is desirable that the hard sphere 41 be subjected to a rust prevention treatment such as nickel plating. The hard sphere 53 used for the rolling bearing device 50 having the stopper function is also required to support the vertical load of the upper structure and to be smoothly rolled between the hard plates 51 and 52. It is good to use what processed.
[0049]
The hard plates 43 and 44 used for the rolling bearing device 32 are substantially rhombic plate-shaped members having required hardness and flatness, and the positioning member 42 is adhered to the center to position the hard sphere 41 at the center. are doing. The hard plates 43 and 44 are provided with rolling surfaces including a circle having a radius that is at least twice the diameter of the hard sphere 41 around the position where the hard sphere 41 is positioned. The rolling surfaces of the hard plates 43 and 44 may also be subjected to rust prevention treatment such as nickel plating. On both sides of the upper and lower hard plates 43 and 44, bolt fastening portions 18 and 19 (see FIGS. 2 and 3) similar to those of the stopper device 1 are provided to facilitate construction.
[0050]
The hard plates 43 and 44 may be manufactured, for example, by subjecting a plate-shaped material to cold rolling. In the cold rolling, the plate-shaped material is drawn while being sandwiched between rolling rollers. Since no heat treatment is performed, no distortion occurs, and a required flatness can be secured. The required hardness can be obtained by work hardening. According to this cold rolling, hard plates 43 and 44 having an HRC of 20 or more, more preferably an HRC of 25 or more can be obtained using a steel material such as SUS304.
[0051]
In addition, since the hard plates 43 and 44 receive a load in the vertical direction from the hard sphere 41 after being installed, a depression occurs in the vertical direction due to creep strain. In order to smoothly roll the hard sphere 41 during an earthquake, the smaller the amount of creep strain, the better. As described above, a material that is work-hardened by cold rolling is preferable because creep distortion is reduced. More specifically, by using a material having a vertical subsidence amount of 200 μm or less corresponding to 60 years, the smooth rolling of the hard sphere 41 can be maintained for a long period of time (the service life of a general house). The hard plates 51 and 52 used in the rolling bearing device 50 having the stopper function are also required to support the vertical load of the upper structure and smoothly roll the hard sphere 53 therebetween. It is good to use the thing which performed the same processing as 44.
[0052]
The positioning member 42 is preferably made of a soft elastic material such as a soft urethane foam, a polystyrene foam, or a polyethylene foam. The inner diameter of the positioning member 42 is preferably the same as or slightly smaller than the diameter of the hard sphere 41 so that the positioning of the hard sphere 41 can be performed reliably. In addition, as shown in FIG. 15, by covering the periphery of the hard sphere 41 with the positioning member 42, it is possible to prevent dust and dirt from entering the rolling region of the hard sphere 41. As for the positioning members 58 and 59 used for the rolling bearing device 50 having the stopper function, those having the same material as the positioning member 42 may be used.
[0053]
In addition, in this rolling bearing device 32, the positioning member 42 is bonded only to either the lower hard plate 44 or the upper hard plate 43, and the positioning member 42 is bonded to the outer peripheral side, The inner peripheral side is not bonded. Thus, when the hard sphere 41 rolls during an earthquake, the hard sphere 41 is easily deformed in accordance with the rolling, and the resistance of the hard sphere 41 to rolling is reduced.
[0054]
The damping member 45 used in the damping device 33 is preferably made of high-damping rubber, and Table 1 below shows a suitable compounding example of the rubber material. In Table 1, phr is a symbol used when indicating the mass of the compounding agent by the number of parts with respect to 100 parts of rubber.
[0055]
The lifting prevention member and the anchor structure of the structure according to the present invention have been described above, but the lifting prevention member and the anchor structure of the structure according to the present invention are not limited to the above. Further, the lifting prevention member having the stopper function has a stopper function for regulating the relative horizontal movement amount of the upper structure and the lower structure of the structure, and is not bulky and can be manufactured at low cost. It may be used as a stopper device for an anchor structure of a structured structure.
[0056]
[Table 1]

[0057]
(Equation 1)

[0058]
【The invention's effect】
The lifting prevention device according to the present invention is characterized in that, in the event of an earthquake, the upper and lower hard plates are relatively displaced in the horizontal direction according to the relative horizontal displacement of the upper structure and the lower structure of the structure, and the stopper device functions. In this case, the upper and lower engaging portions of the sliding body are overlapped (covered) by the lifting prevention pieces of the upper and lower lifting prevention members. In this state, when a vertically upward force acts on the upper structure of the structure, the lifting prevention device responds to the vertical force acting on the upper structure of the structure by moving the upper and lower engaging portions of the sliding body, The lifting prevention pieces of the lifting prevention member are vertically engaged to prevent the upper structure of the structure from floating.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing a lifting prevention device according to a first embodiment of the present invention.
FIG. 2 is a plan view of the lifting prevention device shown in FIG. 1;
FIG. 3 is a plan view showing a construction process of the uplift prevention device shown in FIG. 1;
FIG. 4 is a longitudinal sectional view showing a use state of the lifting prevention device shown in FIG. 1;
FIG. 5 is a longitudinal sectional view showing a use state of the lifting prevention device shown in FIG. 1;
FIG. 6 is a longitudinal sectional view showing a use state of the lifting prevention device shown in FIG. 1;
FIG. 7 is a plan view showing an anchor structure of the structure.
FIG. 8 is a longitudinal sectional view showing one embodiment of a rolling bearing device having a stopper function used for an anchor structure of a structure.
FIG. 9 is a longitudinal sectional view showing a use state of the rolling bearing device having the stopper function shown in FIG. 8;
FIG. 10 is a longitudinal sectional view showing an embodiment of a lifting prevention device having a stopper function.
FIG. 11 is a vertical cross-sectional view showing a use state of a lifting prevention device having a stopper function.
FIG. 12 is a longitudinal sectional view showing a modification of the lifting prevention device having a stopper function.
FIG. 13 is a longitudinal sectional view showing a modification of the lifting prevention device having the stopper function.
FIG. 14 is a plan view showing a state in which a lifting prevention device is provided in the anchor structure of the structure.
FIG. 15 is a longitudinal sectional view showing one embodiment of a rolling bearing device used for an anchor structure of a structure.
FIG. 16 is a longitudinal sectional view showing one embodiment of a vibration damping device used for an anchor structure of a structure.
FIG. 17 is a diagram showing an anchor structure of a conventional superstructure of a house.
FIG. 18 is a view showing a base packing material.
[Explanation of symbols]
1 Lift prevention device
2 Housing base (superstructure of structure)
3 foundation concrete (substructure)
4,5 hard plate
6 sliding body
7, 8 Lifting prevention member
10, 11 engaging part
12, 13 wall
14, 15 Lift prevention piece
22, 23 elastic cushioning material

Claims (7)

Upper and lower hard plates respectively disposed on surfaces facing the upper structure and the lower structure of the structure,
Between the upper and lower hard plates, slidably disposed on the lower hard plate, a sliding body having engaging portions projecting at both upper and lower ends,
On the opposing surfaces of the upper and lower hard plates, a cylindrical wall portion protruding so as to define a sliding region of the sliding body, and a lifting prevention piece portion protruding in an inner diameter direction from an upper edge of the wall portion. Having a lifting prevention member having
When the upper and lower hard plates relatively move in the horizontal direction and the sliding body slides to the periphery of the sliding area between the upper and lower hard plates, the lifting prevention piece of the lifting prevention member attached to the upper and lower hard plates is A lifting prevention device which overlaps with upper and lower engagement portions of a sliding body to prevent the upper hard plate from floating. When arranging between the upper structure and the lower structure of the structure, a gap is provided between the sliding body and the upper hard plate by being arranged together with the rolling bearing device or the sliding bearing device. The lifting prevention device according to claim 1, wherein: The lifting prevention device according to claim 3, wherein a gap between the sliding body and the upper hard plate is set to 1 mm or more. When arranging between the upper structure and the lower structure of the structure, separately arrange with the stopper device,
When the relative movement of the upper and lower hard plates in the horizontal direction is restricted by the stopper device, the lifting prevention pieces of the upper and lower lifting prevention members overlap with the upper and lower engaging portions of the sliding body, respectively, and 4. The device according to claim 1, wherein the body does not simultaneously contact both the upper and lower lifting prevention members in the horizontal direction. When the relative movement of the upper and lower hard plates in the horizontal direction is regulated by the stopper device,
The lift according to claim 4, wherein when the slide is brought into contact with one of the lift prevention members, a gap of 5 mm or more is generated in a horizontal direction between the slide prevention member and the other lift prevention member that does not contact the slide. Prevention device. An elastic cushioning material is disposed on the inner peripheral surface of the lifting prevention member and / or the outer peripheral surface of the sliding body,
When the upper structure and the lower structure of the structure move in the horizontal direction relatively during the earthquake, the upper and lower lifting prevention members are brought into contact with the sliding body, and the upper structure and the lower structure of the structure are relatively moved. The lifting prevention device according to any one of claims 1 to 3, wherein the movement amount in the horizontal direction is regulated. A rolling bearing device or a sliding bearing device is dispersedly disposed between the lower structure and the upper structure of the structure so as to support the vertical load of the upper structure of the structure,
A plurality of vibration damping devices each having a hard plate attached to the upper and lower end surfaces of the high damping rubber are dispersed between the lower structure and the upper structure of the structure so as to suppress the torsional vibration of the upper structure of the structure. In the anchor structure of the arranged structure,
An anchor structure for a structure, wherein the lifting prevention device according to claim 1 is disposed between a lower structure and an upper structure of the structure.

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