JP2017186777A - Bearing device for structure - Google Patents

Bearing device for structure Download PDF

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JP2017186777A
JP2017186777A JP2016075559A JP2016075559A JP2017186777A JP 2017186777 A JP2017186777 A JP 2017186777A JP 2016075559 A JP2016075559 A JP 2016075559A JP 2016075559 A JP2016075559 A JP 2016075559A JP 2017186777 A JP2017186777 A JP 2017186777A
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elastic body
guide hole
orthogonal
shear
fixed
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JP6026034B1 (en
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合田　裕一
Yuichi Aida
裕一 合田
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BBM Co Ltd
Kaimon KK
Miwa Tech Co Ltd
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BBM Co Ltd
Kaimon KK
Miwa Tech Co Ltd
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Priority to PCT/JP2016/081044 priority patent/WO2017175412A1/en
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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00—Structural or constructional details of bridges
    • E01D19/04—Bearings; Hinges
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
    • F16F1/40—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers consisting of a stack of similar elements separated by non-elastic intermediate layers

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)
  • Bridges Or Land Bridges (AREA)
  • Springs (AREA)
  • Vibration Prevention Devices (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a bearing device for structure that can have necessary performance set differently between one of orthogonal directions and the other.SOLUTION: A bearing device for structure comprises: an intermediate plate 4 where a shearing restriction member 5 is arranged; an upper member 2 which is fixed to an upper structure side and has a guide hole that an upper part of the shearing restriction member 5 penetrates formed; a lower member 3 which is fixed to a lower structure side and has a guide hole that a lower part of the shearing restriction member 5 penetrates formed; an upper elastic body 7 which is fixed to a lower surface of the upper member 2 and an upper surface of the intermediate plate 4; a lower elastic body 8 which is fixed to an upper surface of the lower member 3 and a lower surface of the intermediate plate 4; a plate 9 which deters the upper member 2 from being displaced in the other of orthogonal directions; and a plate 11 which deters the lower member 3 from being displaced in one of orthogonal direction, the upper elastic member 7 and lower elastic member 8 being set to different rigidity to differ in quantity of displacement due to stress in an earthquake between the one and other of the orthogonal directions.SELECTED DRAWING: Figure 1

Description

本発明は、建築物、橋梁等の構造物に設置され、弾性部材の弾性変位により地震エネルギーを吸収する支承において、直交する二方向で変位量が異なる構造物用支承装置に関する。   The present invention relates to a bearing device for a structure that is installed in a structure such as a building or a bridge and absorbs seismic energy by elastic displacement of an elastic member and has different displacement amounts in two orthogonal directions.

従来、建築物や橋梁等の構造物の支承装置として、弾性部材の弾性変位により地震エネルギーを吸収する弾性支承装置が開発されている。   Conventionally, an elastic bearing device that absorbs seismic energy by elastic displacement of an elastic member has been developed as a bearing device for structures such as buildings and bridges.

特開２００２−１８８１２２号公報JP 2002-188122 A

従来の弾性支承装置は、弾性体それ自体のせん断弾性率は方向性がなく、直交する一方の方向と直交する他方の方向に対して同一の性能値（許容変位量・剛性）を有するものである。   In the conventional elastic bearing device, the elastic modulus of the elastic body itself has no directionality, and has the same performance value (allowable displacement amount / rigidity) with respect to the other direction orthogonal to the one orthogonal direction. is there.

しかしながら、構造物の種別等により、直交する一方の方向の必要性能値（許容変位量・剛性）と直交する他方の方向の必要性能値（許容変位量・剛性）が異なる場合がある。
この場合、弾性支承の形状（構造）を決定するにあたり、その形状（構造）を必要性能の低い方に対応させて設定すると変位性能が不足することになるため、必要性能の高い方に対応させて形状（構造）を設定することになるが、これでは弾性層の平面寸法が大きくなり、弾性支承が大型になり、コスト高を招くことにもなるという問題があった。 However, the required performance value (allowable displacement / rigidity) in one direction orthogonal to the required performance value (allowable displacement / rigidity) in the other orthogonal direction may differ depending on the type of structure.
In this case, when determining the shape (structure) of the elastic bearing, if the shape (structure) is set to correspond to the lower required performance, the displacement performance will be insufficient. In this case, however, there is a problem that the planar dimension of the elastic layer becomes large, the elastic bearing becomes large, and the cost increases.

本発明は、前記従来技術の持つ問題点を解決する、構造が簡単で、弾性体の寸法を大きくすることなく、直交する一方の方向の必要性能値（許容変位量・剛性）と直交する他方の方向の必要性能値（許容変位量・剛性）を異なるように設定することが可能な構造物用支承装置を提供することを目的とする。   The present invention solves the problems of the prior art, has a simple structure, and does not increase the size of the elastic body. The other is orthogonal to the required performance value (allowable displacement / rigidity) in one orthogonal direction. It is an object of the present invention to provide a structure bearing device capable of setting different required performance values (allowable displacement amount / rigidity) in the direction of.

本発明の構造物用支承装置は、前記課題を解決するために、中央に上下に伸び両端に雄ネジを形成したせん断拘束部材を配置した中間プレートと、上部構造側に固定され中央に直交する一方の方向に伸びる上部が開口した溝と溝底部に前記せん断拘束部材の上部が貫通する直交する一方の方向に伸びるガイド穴が形成された上部部材と、下部構造側に固定され中央に直交する他方の方向に伸びる下部が開口した溝と溝底部に前記せん断拘束部材の下部が貫通する直交する他方の方向に伸びるガイド穴が形成された下部部材と、前記上部部材の下面と前記中間プレートの上面に固定される上部弾性体と、前記下部部材の上面と前記中間プレートの下面に固定される下部弾性体と、前記上部部材のガイド穴を貫通する前記せん断拘束部材の上部に嵌挿され前記溝幅と同じ幅を有し上部部材の直交する他方の方向の変位を阻止するプレートと、前記せん断拘束部材の上部雄ネジに螺着されるナットと、前記下部部材のガイド穴を貫通する前記せん断拘束部材の下部に嵌挿され前記溝幅と同じ幅を有し下部部材の直交する一方の方向の変位を阻止するプレートと、前記せん断拘束部材の下部雄ネジに螺着されるナットと、を備え、前記上部弾性体と前記下部弾性体の剛性を相違するように設定し、地震時の応力による直交する一方の方向と直交する他方の方向の変位量が異なるようにすることを特徴とする。   In order to solve the above-mentioned problem, the structural support device of the present invention is fixed to the upper structure side and orthogonal to the center, with an intermediate plate in which a shear restraining member extending vertically in the center and having male screws formed at both ends is arranged. An upper member having an upper opening extending in one direction and an upper member in which a guide hole extending in one orthogonal direction through which the upper portion of the shear restraining member passes is formed in the groove bottom, and fixed to the lower structure side and orthogonal to the center A lower member having a lower opening extending in the other direction, a lower member in which a groove extending in the other direction perpendicular to the lower portion of the shear restraining member is formed in the groove bottom, a lower surface of the upper member, and the intermediate plate An upper elastic body fixed to the upper surface, a lower elastic body fixed to the upper surface of the lower member and the lower surface of the intermediate plate, and an upper portion of the shear restraining member penetrating the guide hole of the upper member A plate that is inserted and has the same width as the groove and prevents displacement of the upper member in the other orthogonal direction, a nut that is screwed into the upper male screw of the shear restraining member, and a guide hole in the lower member A plate that is inserted into the lower part of the penetrating shear restraining member and has the same width as the groove and prevents the lower member from being displaced in one orthogonal direction, and is screwed to the lower male screw of the shear restraining member A nut, and the rigidity of the upper elastic body and the lower elastic body is set to be different from each other so that the amount of displacement in one direction orthogonal to the other direction orthogonal to the stress due to the stress at the time of an earthquake is different. It is characterized by.

また、本発明の構造物用支承装置は、前記上部構造が前記上部弾性体の弾性力の範囲内で直交する一方の方向の所定範囲内で変位可能とし、前記下部構造が前記下部弾性体の弾性力の範囲内で直交する他方の方向の所定範囲内で変位可能とすることを特徴とする。   In the structure support device of the present invention, the upper structure is displaceable within a predetermined range in one direction orthogonal to the upper elastic body within the range of the elastic force of the upper elastic body, and the lower structure is the lower elastic body. Displacement is possible within a predetermined range in the other direction orthogonal to each other within the range of elastic force.

また、本発明の構造物用支承装置は、前記上部弾性体の前記上部部材のガイド穴に対応する部分と前記下部弾性体の前記下部部材のガイド穴に対応する部分を空所にすることを特徴とする。   In the structure support device of the present invention, the portion of the upper elastic body corresponding to the guide hole of the upper member and the portion of the lower elastic body corresponding to the guide hole of the lower member are made empty. Features.

中央に上下に伸び両端に雄ネジを形成したせん断拘束部材を配置した中間プレートと、上部構造側に固定され中央に直交する一方の方向に伸びる上部が開口した溝と溝底部に前記せん断拘束部材の上部が貫通する直交する一方の方向に伸びるガイド穴が形成された上部部材と、下部構造側に固定され中央に直交する他方の方向に伸びる下部が開口した溝と溝底部に前記せん断拘束部材の下部が貫通する直交する他方の方向に伸びるガイド穴が形成された下部部材と、前記上部部材の下面と前記中間プレートの上面に固定される上部弾性体と、前記下部部材の上面と前記中間プレートの下面に固定される下部弾性体と、前記上部部材のガイド穴を貫通する前記せん断拘束部材の上部に嵌挿され前記溝幅と同じ幅を有し上部部材の直交する他方の方向の変位を阻止するプレートと、前記せん断拘束部材の上部雄ネジに螺着されるナットと、前記下部部材のガイド穴を貫通する前記せん断拘束部材の下部に嵌挿され前記溝幅と同じ幅を有し下部部材の直交する一方の方向の変位を阻止するプレートと、前記せん断拘束部材の下部雄ネジに螺着されるナットと、を備え、前記上部弾性体と前記下部弾性体の剛性を相違するように設定し、地震時の応力による直交する一方の方向と直交する他方の方向の変位量が異なるようにすることで、簡単な構造で、弾性体の寸法を大きくすることなく、直交する一方の方向の必要性能値（許容変位量・剛性）と直交する他方の方向の必要性能値（許容変位量・剛性）を異なるように設定することが可能となる。
上部構造が上部弾性体の弾性力の範囲内で直交する一方の方向の所定範囲内で変位可能とし、下部構造が下部弾性体の弾性力の範囲内で直交する他方の方向の所定範囲内で変位可能とすることで、地震時の相対変位に対して広い範囲で変位し地震エネルギーを吸収することが可能となる。
上部弾性体の上部部材のガイド穴に対応する部分と下部弾性体の下部部材のガイド穴に対応する部分を空所にすることで、上部弾性体と下部弾性体の変形がせん断拘束部材に阻害されることがなく効率良く地震エネルギーをきゅうしゅうすることが可能となる。 An intermediate plate in which a shear restraint member extending vertically in the center and having male screws formed at both ends is arranged, a groove that is fixed to the upper structure side and extends in one direction perpendicular to the center, and the groove restraint member in the groove bottom. An upper member formed with a guide hole extending in one orthogonal direction through which the upper part of the groove penetrates, a groove fixed to the lower structure side and extending in the other direction orthogonal to the center and an opening in the lower direction, and the shear restraining member at the groove bottom A lower member formed with a guide hole extending in the other orthogonal direction, a lower elastic member fixed to the lower surface of the upper member and the upper surface of the intermediate plate, an upper surface of the lower member, and the intermediate member A lower elastic body fixed to the lower surface of the plate, and the other of the upper members orthogonal to the upper member that is inserted into the upper portion of the shear restraining member that passes through the guide hole of the upper member and has the same width as the groove width. A plate that prevents displacement in the direction, a nut that is screwed into the upper male screw of the shear restraining member, and a width that is the same as the groove width that is inserted into the lower portion of the shear restraining member that passes through the guide hole of the lower member A plate that prevents displacement of the lower member in one orthogonal direction, and a nut that is screwed to the lower male screw of the shear restraining member, and the rigidity of the upper elastic body and the lower elastic body is increased. By setting differently, the displacement amount in one direction perpendicular to the direction perpendicular to the stress due to the stress at the time of earthquake is different, and the structure is simple and orthogonal without increasing the size of the elastic body Therefore, the required performance value (allowable displacement amount / rigidity) in the other direction orthogonal to the required performance value (allowable displacement amount / rigidity) in one direction can be set differently.
The upper structure is displaceable within a predetermined range in one direction orthogonal within the range of elastic force of the upper elastic body, and the lower structure is within a predetermined range in the other direction orthogonal to within the elastic force range of the lower elastic body By making the displacement possible, it is possible to absorb the earthquake energy by displacing in a wide range with respect to the relative displacement at the time of the earthquake.
Deformation of the upper elastic body and the lower elastic body is obstructed by the shear restraining member by making the part corresponding to the guide hole of the upper member of the upper elastic body and the portion corresponding to the guide hole of the lower member of the lower elastic body empty. It is possible to efficiently synthesize earthquake energy without being done.

本発明の実施形態を示す図である。It is a figure which shows embodiment of this invention. 本発明の実施形態を示す図である。It is a figure which shows embodiment of this invention. 本発明の実施形態を示す図である。It is a figure which shows embodiment of this invention. 本発明の実施形態を示す図である。It is a figure which shows embodiment of this invention. 本発明の実施形態を示す図である。It is a figure which shows embodiment of this invention. 本発明の実施形態を示す図である。It is a figure which shows embodiment of this invention. 本発明の実施形態を示す図である。It is a figure which shows embodiment of this invention. 本発明の実施形態を示す図である。It is a figure which shows embodiment of this invention. 本発明の実施形態を示す図である。It is a figure which shows embodiment of this invention. 本発明の実施形態を示す図である。It is a figure which shows embodiment of this invention.

本発明の実施形態を図により説明する。図１は、本発明の構造物用支承装置１を直交する一方の方向からみた側面図であり、図２は、本発明の構造物用支承装置１を直交する他方の方向からみた側面図である。   An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a side view of the structural support device 1 according to the present invention as viewed from one orthogonal direction, and FIG. 2 is a side view of the structural support device 1 as viewed from the other orthogonal direction. is there.

図５（ａ）（ｂ）に示されるように、上部構造側に固定される上部部材２には、直交する一方の方向（以下「Ｘ方向」という。）に伸び上部が開口した上部溝２ａが形成される。上部溝２ａの溝底部には、Ｘ方向に伸びる上部ガイド穴２ｂが形成される。上部部材２の上面と下面は平面に形成される。   As shown in FIGS. 5A and 5B, the upper member 2 fixed to the upper structure side has an upper groove 2a extending in one orthogonal direction (hereinafter referred to as “X direction”) and having an open upper portion. Is formed. An upper guide hole 2b extending in the X direction is formed at the groove bottom of the upper groove 2a. The upper surface and the lower surface of the upper member 2 are formed flat.

図６（ａ）（ｂ）に示されるように、下部構造側に固定される下部部材３には、直交する他方の方向（以下、「Ｙ方向」という。）に伸び下部が開口した下部溝３ａが形成される。下部溝３ａの溝底部には、Ｙ方向に伸びる下部ガイド穴３ｂが形成される。上部部材２の上面と下面は平面に形成される。   As shown in FIGS. 6A and 6B, the lower member 3 fixed to the lower structure side has a lower groove that extends in the other orthogonal direction (hereinafter referred to as “Y direction”) and has a lower opening. 3a is formed. A lower guide hole 3b extending in the Y direction is formed at the groove bottom of the lower groove 3a. The upper surface and the lower surface of the upper member 2 are formed flat.

図７（ａ）（ｂ）に、中間プレート４と中間プレート４の中央に配置されるせん断拘束部材５（商標名「しんぼう」）の一実施形態を示す。この実施形態では、中間プレート４の中央に中央雌ネジ穴４ａを形成し、せん断拘束部材５の中央雄ネジ５ｃを螺着して固定する。せん断拘束部材５は、中間プレート４の上下に伸び上部に上部雄ネジ５ａ、下部に下部雄ネジ５ｂが形成される。中間プレート４の中央に貫通穴を形成し、貫通穴にせん断拘束部材５を挿入し、溶接により固定しても良い。   FIGS. 7A and 7B show an embodiment of the intermediate plate 4 and a shear restraining member 5 (trade name “Shinbo”) disposed in the center of the intermediate plate 4. In this embodiment, a central female screw hole 4a is formed at the center of the intermediate plate 4, and the central male screw 5c of the shear restraint member 5 is screwed and fixed. The shear restraining member 5 extends up and down of the intermediate plate 4 and has an upper male screw 5a at the upper part and a lower male screw 5b at the lower part. A through hole may be formed at the center of the intermediate plate 4, and the shear restraining member 5 may be inserted into the through hole and fixed by welding.

図８に、中間プレート４にせん断拘束部材５を固定する他の実施形態を示す。この実施形態では、中間プレート４を上プレート４ｂと下プレート４ｃで構成し、上プレート４ｂと下プレート４ｃの中央部に貫通穴を形成し、上プレート４ｂの下面の一部に貫通穴と連通する大径部を形成し、下プレート４ｃの上面の一部に貫通穴と連通する大径部を形成する。一方、せん断拘束部材５の中間部に大径部５ｄを形成し、せん断拘束部材５の大径部５ｄを上プレート４ｂと下プレート４ｃの大径部に位置させ、上下プレート４ｂ、４ｃを固定ボルト６で固定することにより、せん断拘束部材５を中間プレート４に固定する。   FIG. 8 shows another embodiment in which the shear restraining member 5 is fixed to the intermediate plate 4. In this embodiment, the intermediate plate 4 is composed of an upper plate 4b and a lower plate 4c, a through hole is formed at the center of the upper plate 4b and the lower plate 4c, and a through hole is communicated with a part of the lower surface of the upper plate 4b. A large diameter portion that communicates with the through hole is formed in a part of the upper surface of the lower plate 4c. On the other hand, a large diameter portion 5d is formed in the middle portion of the shear restraining member 5, the large diameter portion 5d of the shear restraining member 5 is positioned at the large diameter portions of the upper plate 4b and the lower plate 4c, and the upper and lower plates 4b, 4c are fixed. The shear restraining member 5 is fixed to the intermediate plate 4 by fixing with bolts 6.

図９は、上部弾性体７の上面図である。上部弾性体７はゴム等の復元性のある材料で形成される。上部弾性体７には、上部部材２の上部ガイド穴２ｂに対応する部分にＸ方向に伸びる空所７ａが形成される。上部弾性体７を複数に分割し、上部ガイド穴２ｂに重ならないように配置しても良い。   FIG. 9 is a top view of the upper elastic body 7. The upper elastic body 7 is made of a restoring material such as rubber. In the upper elastic body 7, a space 7 a extending in the X direction is formed in a portion corresponding to the upper guide hole 2 b of the upper member 2. The upper elastic body 7 may be divided into a plurality of parts so as not to overlap the upper guide hole 2b.

図１０は、下部弾性体８の上面図である。下部弾性体８はゴム等の復元性のある材料で形成される。下部弾性体８には、下部部材３の下部ガイド穴３ｂに対応する部分にＹ方向に伸びる空所８ａが形成される。下部弾性体８を複数に分割し、下部ガイド穴３ｂに重ならないように配置しても良い。   FIG. 10 is a top view of the lower elastic body 8. The lower elastic body 8 is formed of a restoring material such as rubber. In the lower elastic body 8, a space 8a extending in the Y direction is formed in a portion corresponding to the lower guide hole 3b of the lower member 3. The lower elastic body 8 may be divided into a plurality and arranged so as not to overlap the lower guide hole 3b.

図１、図２は、各部材を組み込んだ構造物支承装置１のＸ方向から見た側面図とＹ方向からみた側面図である。構造物支承装置１を組み立てるには、中央部にせん断拘束部材５を固定した中間プレート４の上下面に上部弾性体７と下部弾性体８を配置し、上部弾性体７の上面に上部部材２、下部弾性体８の下面に下部部材３を配置し、加硫成形により一体化する。   FIG. 1 and FIG. 2 are a side view seen from the X direction and a side view seen from the Y direction of the structure support device 1 incorporating each member. In order to assemble the structure support device 1, the upper elastic body 7 and the lower elastic body 8 are disposed on the upper and lower surfaces of the intermediate plate 4 with the shear restraining member 5 fixed at the center, and the upper member 2 is disposed on the upper surface of the upper elastic body 7. The lower member 3 is disposed on the lower surface of the lower elastic body 8 and integrated by vulcanization molding.

図３、図４は、構造物支承装置１の上面図と底面図である。中間プレート４、上部弾性体７、上部部材２、下部弾性体８及び下部部材３が加硫成形により一体化された後、上部部材２の上部ガイド穴２ｂから上方に突き出したせん断拘束部材５に上部溝２ａの溝幅とほぼ同じ幅のＹ方向変位阻止プレート９を嵌挿し、せん断拘束部材５の上部雄ネジ５ａにナット１０を螺着して固定する。   3 and 4 are a top view and a bottom view of the structure support device 1. After the intermediate plate 4, the upper elastic body 7, the upper member 2, the lower elastic body 8 and the lower member 3 are integrated by vulcanization, the shear restraining member 5 protruding upward from the upper guide hole 2 b of the upper member 2 is formed. A Y-direction displacement prevention plate 9 having a width substantially the same as the groove width of the upper groove 2 a is fitted and a nut 10 is screwed and fixed to the upper male screw 5 a of the shear restraining member 5.

下部部材３の下部ガイド穴３ｂから下方に突き出したせん断拘束部材５に下部溝３ａの溝幅とほぼ同じ幅のＸ方向変位阻止プレート１１を嵌挿し、せん断拘束部材５の下部雄ネジ５ｂにナット１０を螺着して固定する。   An X-direction displacement prevention plate 11 having a width substantially the same as the groove width of the lower groove 3 a is fitted into the shear restraining member 5 protruding downward from the lower guide hole 3 b of the lower member 3, and a nut is fitted to the lower male screw 5 b of the shear restraining member 5. 10 is fixed by screwing.

地震時の相対変位に対して、上部部材２は、Ｙ方向の変位をＹ方向変位阻止プレート９により阻止され、Ｘ方向と上部弾性体７の剛性に応じたＸ方向から所定範囲で変位し地震エネルギーを吸収する。   With respect to the relative displacement at the time of the earthquake, the upper member 2 is prevented from being displaced in the Y direction by the Y-direction displacement prevention plate 9 and is displaced within a predetermined range from the X direction and the X direction according to the rigidity of the upper elastic body 7. Absorb energy.

地震時の相対変位に対して、下部部材３は、Ｘ方向の変位をＸ方向変位阻止プレート１１により阻止され、Ｙ方向と下部弾性体８の剛性に応じたＹ方向から所定範囲で変位し地震エネルギーを吸収する。   The relative displacement at the time of the earthquake is such that the lower member 3 is displaced in the X direction by the X direction displacement prevention plate 11 and is displaced within a predetermined range from the Y direction and the Y direction according to the rigidity of the lower elastic body 8. Absorb energy.

構造物の種別において、Ｘ方向の必要性能（許容変位量・剛性）とＹ方向の必要性能（許容変位量・剛性）が異なるように設定される場合がある。Ｘ方向の変位量をＹ方向の変位量より小さくしたいという設定の場合、上部弾性体７の剛性を下部弾性体８の剛性より大きくする。逆に、Ｙ方向の変位量をＸ方向の変位量より小さくしたいという設定の場合、下部弾性体８の剛性を上部弾性体７の剛性より大きくする。   In some types of structures, the required performance (allowable displacement / rigidity) in the X direction and the required performance (allowable displacement / rigidity) in the Y direction may be set differently. In the case where it is desired to make the amount of displacement in the X direction smaller than the amount of displacement in the Y direction, the rigidity of the upper elastic body 7 is made larger than that of the lower elastic body 8. On the other hand, when it is desired to make the amount of displacement in the Y direction smaller than the amount of displacement in the X direction, the rigidity of the lower elastic body 8 is made larger than the rigidity of the upper elastic body 7.

以上のように、本発明の構造物用支承装置１によれば、構造が簡単で、弾性体の寸法を大きくすることなく、直交する一方の方向の必要性能値（許容変位量・剛性）と直交する他方の方向の必要性能値（許容変位量・剛性）を異なるように設定することが可能になる。   As described above, according to the structure support device 1 of the present invention, the structure is simple and the required performance value (allowable displacement amount / rigidity) in one orthogonal direction can be obtained without increasing the size of the elastic body. It is possible to set different required performance values (allowable displacement amount / rigidity) in the other direction perpendicular to each other.

１： 構造物用支承装置、２：上部部材、２ａ：上部溝、２ｂ：上部ガイド穴、３：下部部材、３ａ：下部溝、３ｂ：下部ガイド穴、４：中間プレート、４ａ：雌ネジ穴、４ｂ：上プレート、４ｃ：下プレート、５：せん断拘束部材、５ａ：上部雄ネジ、５ｂ：下部雄ネジ、５ｃ：中央雄ネジ、５ｄ：大径部、６：固定ボルト、７：上部弾性体、７ａ：空所、８：下部弾性体、８ａ：空所、９：Ｙ方向変位阻止プレート、１０：ナット、１１：Ｘ方向変位阻止プレート   1: support device for structure, 2: upper member, 2a: upper groove, 2b: upper guide hole, 3: lower member, 3a: lower groove, 3b: lower guide hole, 4: intermediate plate, 4a: female screw hole 4b: upper plate, 4c: lower plate, 5: shear restraint member, 5a: upper male screw, 5b: lower male screw, 5c: central male screw, 5d: large diameter portion, 6: fixing bolt, 7: upper elasticity Body, 7a: void, 8: lower elastic body, 8a: void, 9: Y-direction displacement prevention plate, 10: nut, 11: X-direction displacement prevention plate

Claims (3)

中央に上下に伸び両端に雄ネジを形成したせん断拘束部材を配置した中間プレートと、
上部構造側に固定され中央に直交する一方の方向に伸びる上部が開口した溝と溝底部に前記せん断拘束部材の上部が貫通する直交する一方の方向に伸びるガイド穴が形成された上部部材と、
下部構造側に固定され中央に直交する他方の方向に伸びる下部が開口した溝と溝底部に前記せん断拘束部材の下部が貫通する直交する他方の方向に伸びるガイド穴が形成された下部部材と、
前記上部部材の下面と前記中間プレートの上面に固定される上部弾性体と、
前記下部部材の上面と前記中間プレートの下面に固定される下部弾性体と、
前記上部部材のガイド穴を貫通する前記せん断拘束部材の上部に嵌挿され前記溝幅と同じ幅を有し上部部材の直交する他方の方向の変位を阻止するプレートと、
前記せん断拘束部材の上部雄ネジに螺着されるナットと、
前記下部部材のガイド穴を貫通する前記せん断拘束部材の下部に嵌挿され前記溝幅と同じ幅を有し下部部材の直交する一方の方向の変位を阻止するプレートと、
前記せん断拘束部材の下部雄ネジに螺着されるナットと、
を備え、
前記上部弾性体と前記下部弾性体の剛性を相違するように設定し、地震時の応力による直交する一方の方向と直交する他方の方向の変位量が異なるようにすることを特徴とする構造物用支承装置。 An intermediate plate in which a shear restraint member extending vertically in the center and having male screws formed on both ends is disposed;
An upper member fixed on the upper structure side and extending in one direction orthogonal to the center and having an upper opening and a groove bottom formed with a guide hole extending in one orthogonal direction through which the upper portion of the shear restraint member passes;
A lower member that is fixed to the lower structure side and that extends in the other direction orthogonal to the center and has a lower opening, and a lower member in which a guide hole extending in the other orthogonal direction through which the lower portion of the shear restraining member passes is formed in the groove bottom;
An upper elastic body fixed to the lower surface of the upper member and the upper surface of the intermediate plate;
A lower elastic body fixed to the upper surface of the lower member and the lower surface of the intermediate plate;
A plate that is inserted into the upper portion of the shear restraining member that passes through the guide hole of the upper member, has the same width as the groove width, and prevents displacement of the upper member in the other orthogonal direction;
A nut screwed to the upper male screw of the shear restraining member;
A plate that is inserted into the lower portion of the shear restraining member that passes through the guide hole of the lower member and has the same width as the groove width, and prevents displacement of the lower member in one orthogonal direction;
A nut screwed into the lower male screw of the shear restraining member;
With
The structure is characterized in that the rigidity of the upper elastic body and the lower elastic body is set to be different so that the amount of displacement in one direction orthogonal to the direction orthogonal to the stress due to the stress at the time of an earthquake is different. Bearing device. 前記上部構造が前記上部弾性体の弾性力の範囲内で直交する一方の方向の所定範囲内で変位可能とし、前記下部構造が前記下部弾性体の弾性力の範囲内で直交する他方の方向の所定範囲内で変位可能とすることを特徴とする請求項１に記載の構造物用支承装置。   The upper structure is displaceable within a predetermined range in one direction orthogonal within the range of the elastic force of the upper elastic body, and the lower structure is displaced in the other direction orthogonal within the range of the elastic force of the lower elastic body. 2. The structural support device according to claim 1, wherein the structural support device is displaceable within a predetermined range. 前記上部弾性体の前記上部部材のガイド穴に対応する部分と前記下部弾性体の前記下部部材のガイド穴に対応する部分を空所にすることを特徴とする請求項１又は２に記載の構造物用支承装置。   3. The structure according to claim 1, wherein a portion of the upper elastic body corresponding to the guide hole of the upper member and a portion of the lower elastic body corresponding to the guide hole of the lower member are made empty. Support device for goods.
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