JP5107014B2 - Seismic isolation material mounting structure - Google Patents

Seismic isolation material mounting structure Download PDF

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JP5107014B2
JP5107014B2 JP2007323015A JP2007323015A JP5107014B2 JP 5107014 B2 JP5107014 B2 JP 5107014B2 JP 2007323015 A JP2007323015 A JP 2007323015A JP 2007323015 A JP2007323015 A JP 2007323015A JP 5107014 B2 JP5107014 B2 JP 5107014B2
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flange
column
slider
plate
seismic isolation
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JP2009144418A (en
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智勇 工藤
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Asahi Kasei Homes Corp
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Description

本発明は、免震建物において上部構造体の荷重を下部構造に伝達する部位である免震材の取付構造に関するものである。 The present invention relates to a structure for attaching a seismic isolation material, which is a part for transmitting a load of an upper structure to a lower structure in a seismic isolation building.

従来より、鉄骨造の上部構造体の下端面、例えば免震架台となる１階の大梁（＝１階の床レベルの大梁）の下フランジ下端面あるいは柱下端面と、鉄筋コンクリート造の基礎との間に支承、復元材、減衰材等からなる免震材を介装した免震建物があった。 Conventionally, the lower end surface of a steel upper structure, for example, the lower flange lower end surface or column lower end surface of the first-floor large beam (= floor at the floor level on the first floor) serving as a base isolation frame, and the foundation of the reinforced concrete structure There was a base-isolated building with base-isolated materials such as bearings, restoration materials, and damping materials.

免震材は、地震等の水平荷重が作用した際に滑動や変形が繰り返されるので、磨耗、疲労等によって性能が低下する虞がある。したがって、保守点検や部品の交換を容易に行い得るように構成するのが好ましい。   Since the seismic isolation material is repeatedly slid and deformed when a horizontal load such as an earthquake is applied, its performance may be deteriorated due to wear, fatigue, or the like. Therefore, it is preferable to configure so that maintenance inspection and parts replacement can be easily performed.

たとえば、特許文献１に記載した免震材２においては、大梁の下フランジに固定部材７をボルトにて締結しさらに固定部材７の下面に支持柱４をボルトにて締結しており、ボルトを取り外すことによって、固定部材７や支持柱４の交換を行い得るように構成されている。   For example, in the seismic isolation material 2 described in Patent Document 1, a fixing member 7 is fastened to a lower flange of a large beam with a bolt, and a support column 4 is fastened to a lower surface of the fixing member 7 with a bolt. By removing, the fixing member 7 and the support pillar 4 can be exchanged.

特開２０００−２２０６９４号公報JP 2000-220694 A

しかし、このような構成において免震材が建物の外周部寄りに設置された場合、外壁あるいは免震材を覆うカバーと１階の大梁等の上部構造体との間に免震材固定の為のボルトが位置してしまうことがある。このような場合、ボルトの取り外しの為に外壁やカバーも取り外す必要が生じて免震材の交換作業が極めて大掛かりなものになり、コストの上昇や工期の長期化という問題が発生する虞があった。   However, when the base isolation material is installed near the outer periphery of the building in such a configuration, the base isolation material is fixed between the outer wall or the cover covering the base isolation material and the upper structure such as a large beam on the first floor. The bolt may be positioned. In such a case, it is necessary to remove the outer wall and cover to remove the bolts, and the replacement work of the seismic isolation material becomes extremely large, which may cause problems such as an increase in cost and a prolonged construction period. It was.

本発明は、従来技術の持つ課題を解決し、部品の交換作業を容易に行うことのできる免震材の取付構造を提供することを目的とするものである。    An object of the present invention is to solve the problems of the prior art and to provide a seismic isolation material mounting structure that allows easy replacement of parts.

免震材の取付構造の第１の構成は、底面に突起部を備えた上部構造体と、前記突起部に対応した凹部を有する板状のフランジを上面に備えた板状の摺動子と、からなり、前記凹部に前記突起部を嵌入するとともに、前記上部構造体の底面から板状の延出片を水平方向に延出し、前記摺動子のフランジを前記延出片に対応させて延出して延出部を形成し、前記延出片に穿設したボルト孔と、前記延出部に穿設したねじ孔の位置を一致させてボルトにて締結して前記上部構造体の底面に前記摺動子を固定したことを特徴とする。 The first structure of the seismic isolation material mounting structure includes an upper structure having a protrusion on the bottom surface, and a plate-like slider having a plate-like flange having a recess corresponding to the protrusion on the upper surface. The protrusion is inserted into the recess, and a plate-like extension piece is horizontally extended from the bottom surface of the upper structure, and the flange of the slider is made to correspond to the extension piece. An extended portion is formed by extending, and a bolt hole drilled in the extended piece and a screw hole drilled in the extended portion are aligned with each other and fastened with a bolt , and the bottom surface of the upper structure body The slider is fixed to the above.

本発明にかかる免震材の取付構造の第２の構成は、角形鋼管からなる柱本体と、該柱本体の下端部に溶接され該柱本体の断面の大きさに対応した略正方形で板状の柱フランジと、該柱フランジの下端面の中央に溶接された円柱状の突起部と、を備えた上部構造体と、前記柱フランジと平面的に同一の大きさで前記突起部に対応した凹部を有する板状のフランジを上面に備えた板状の摺動子と、からなり、前記凹部に前記突起部を嵌入した状態で前記柱フランジの底面に前記摺動子を固定したことを特徴とする。 The second structure of the seismic isolation material mounting structure according to the present invention includes a column main body made of a square steel pipe, and a substantially square plate-like shape that is welded to the lower end of the column main body and corresponds to the cross-sectional size of the column main body. And a columnar projection welded to the center of the lower end surface of the column flange, and corresponding to the projection in the same size as the column flange. A plate-like slider having a plate-like flange having a recess on the upper surface, and the slider is fixed to the bottom surface of the column flange in a state in which the projection is fitted in the recess. And

本発明にかかる免震材の取付構造の第１の構成によれば、上部構造体の突起部を摺動子の凹部に嵌入することに加えて、上部構造体の板状の延出片と摺動子のフランジの延出部とをボルトで締結したので、上部構造体への摺動子の固定をより強固なものとすることができ、構造設計の想定外の巨大地震などにより、免震材の位置において上部構造体の浮き上がりが生じるような万一の事態にも摺動子が外れることがない。また、組立中に摺動子が外れないため施工性がよい。しかも、上部構造体の板状の延出片及び摺動子のフランジの延出部を外壁等の障害物の存在しない方向に延出することにより、ボルトの取り外しや再締結を容易に行うことができる。 According to the first configuration of the seismic isolation material mounting structure according to the present invention, in addition to fitting the protrusion of the upper structure into the recess of the slider, the plate-like extension piece of the upper structure and Since the extension of the flange of the slider is fastened with bolts, the slider can be more firmly fixed to the upper structure. In the unlikely event that the upper structure is lifted at the position of the seismic material, the slider will not come off. In addition, workability is good because the slider does not come off during assembly. Moreover, the bolts can be easily removed and re-fastened by extending the plate-like extension piece of the upper structure and the extension part of the flange of the slider in a direction in which no obstacle such as an outer wall exists. Can do .

本発明にかかる免震材の取付構造の第２の構成によれば、板状のフランジを上面に備えた板状の摺動子の凹部に上部構造体の突起部を嵌入するという簡易な構成であるので、上部構造体を油圧ジャッキ等の揚重装置を用いてわずかに浮かすだけで摺動子を上部構造体から分離させて、容易に取り外すことができ、また、新たな摺動子を容易に設置することができる。尚、免震構造は、地震等の水平荷重が作用した際に滑動や変形が繰り返されても、免震材の位置において上部構造体の浮き上がりが生じないように構造設計されるものである。よって構造設計の想定として、摺動子が外れることはない。 According to the second configuration of the seismic isolation material mounting structure according to the present invention, a simple configuration in which the protrusion of the upper structure is inserted into the concave portion of the plate-like slider having the plate-like flange on the upper surface. Therefore, the slider can be separated from the upper structure by simply lifting the upper structure slightly using a lifting device such as a hydraulic jack, and can be easily removed. It can be installed easily. The seismic isolation structure is designed so that the upper structure does not lift at the position of the seismic isolation material even when sliding or deformation is repeated when a horizontal load such as an earthquake is applied. Therefore, as a structural design assumption, the slider does not come off .

本発明に係る免震材の取付構造の好ましい実施形態について図を用いて説明する。   A preferred embodiment of a seismic isolation material mounting structure according to the present invention will be described with reference to the drawings.

まず、図１及び図２を用いて第１実施例について説明する。本実施例は、鉄骨ＡＬＣ（軽量気泡コンクリート）造の住宅である建物Ａにおける免震材の取付構造を示すものであり、図１は免震材まわりの平面図及び断面図、図２は免震材を構成する支承の図及び柱下端部への支承の取り付け状態を示す図である。   First, the first embodiment will be described with reference to FIGS. This example shows a structure for mounting a seismic isolation material in a building A which is a steel ALC (lightweight aerated concrete) house. FIG. 1 is a plan view and a cross-sectional view around the seismic isolation material, and FIG. It is a figure which shows the attachment state of the figure of the bearing which comprises a seismic material, and the pillar lower end part.

（上部構造体）
建物Ａの構造体は、上部構造体Ａ１と下部構造Ａ２で構成されている。上部構造体Ａ１は通し柱である柱１と各階の大梁２とを剛接合して構成した鉄骨造ラーメン構造である。柱１は角形鋼管からなる柱本体１ａとその下端部に溶接された柱フランジ１ｂとからなる。柱フランジ１ｂは板状で柱本体１ａの断面の大きさに対応した略正方形である。柱フランジ１ｂの下端面の中央には円柱状の突起部１ｃが溶接されている。各階の大梁２は、Ｈ形鋼からなりその端部に柱１との接合部となるエンドプレート２ａが溶接されている。柱１と大梁２は夫々のボルト孔の位置を一致させた状態で高力ボルト６にて剛接合されている。柱１の下端部は１階の大梁２の下フランジの下面から若干突出している。 (Superstructure)
The structure of the building A is composed of an upper structure A1 and a lower structure A2. The upper structure A1 is a steel frame ramen structure configured by rigidly joining a pillar 1 as a through pillar and a large beam 2 on each floor. The column 1 includes a column main body 1a made of a square steel pipe and a column flange 1b welded to the lower end portion thereof. The column flange 1b is plate-shaped and has a substantially square shape corresponding to the cross-sectional size of the column main body 1a. A columnar protrusion 1c is welded to the center of the lower end surface of the column flange 1b. The large beam 2 on each floor is made of H-shaped steel, and an end plate 2a serving as a joint portion with the column 1 is welded to an end portion thereof. The column 1 and the girder 2 are rigidly joined by a high-strength bolt 6 with the positions of the respective bolt holes being matched. The lower end portion of the column 1 slightly protrudes from the lower surface of the lower flange of the first beam 2 on the first floor.

上部構造体Ａ１の外周部は、柱１の下端部まで、軽量気泡コンクリート（ＡＬＣ）からなる外壁パネル３ａを連接して構成された外壁３によって覆われている。また、各階の床４は各階の大梁２或いは小梁７の上フランジの上面にＡＬＣからなる床パネル４ａを載置して構成されている。また、１階の床４には床下空間へ潜入するための床下点検口４ｂが形成されている。床下点検口４ｂは１階の大梁２あるいは小梁７に梯子状の枠体５を架設し枠体５の内部に開口部を残した状態で床パネル４ａを載置して構成されている。なお、床下点検口４ｂには、躯体工事の後工程である木工事において開閉自在な蓋が設置されて転落防止措置がとられる。   The outer peripheral portion of the upper structure A1 is covered with the outer wall 3 formed by connecting the outer wall panel 3a made of lightweight cellular concrete (ALC) to the lower end portion of the column 1. The floor 4 on each floor is configured by placing a floor panel 4a made of ALC on the upper surface of the upper flange of the large beam 2 or the small beam 7 on each floor. The floor 4 on the first floor is formed with an underfloor inspection port 4b for infiltrating into the underfloor space. The underfloor inspection opening 4b is configured by placing a floor panel 4a in a state where a ladder-like frame body 5 is installed on the first beam 2 or the small beam 7 and an opening is left inside the frame body 5. The underfloor inspection port 4b is provided with a lid that can be freely opened and closed in the wood work, which is a post-process of the frame work, and measures are taken to prevent falling.

（下部構造）
下部構造Ａ２は、鉄筋コンクリート造のベタ基礎１１、後述する受け板２３を載置する受け板載置部１２、及び後述する復元ゴムＢ２を載置、固定する台座部１３とからなる。 (Substructure)
The lower structure A2 includes a solid foundation 11 made of reinforced concrete, a receiving plate mounting portion 12 for mounting a receiving plate 23 described later, and a pedestal portion 13 for mounting and fixing a restoring rubber B2 described later.

（免震材）
本実施例の免震材Ｂはすべり支承型であり、上部構造体Ａ１と下部構造Ａ２の間に介装されている。免震材Ｂは、支承Ｂ１、復元ゴムＢ２からなる。支承Ｂ１は、上部構造体Ａ１からの鉛直荷重を支持し下部構造Ａ２に伝達する機能を有するものであり、復元ゴムＢ２は相対的に変位した上部構造体Ａ１を所定の位置に復元する復元機能、及びエネルギーを吸収し振動を減衰させる減衰機能を有する。 (Seismic isolation material)
The seismic isolation material B of this embodiment is a sliding support type and is interposed between the upper structure A1 and the lower structure A2. The seismic isolation material B includes a support B1 and a restoration rubber B2. The support B1 has a function of supporting the vertical load from the upper structure A1 and transmitting it to the lower structure A2, and the restoring rubber B2 is a restoring function for restoring the relatively displaced upper structure A1 to a predetermined position. And a damping function for absorbing energy and damping vibration.

支承Ｂ１は、柱１の下端面において柱１と一体となって（柱１に追従して）変位する摺動子２１と、摺動子２１をすべらせる面が形成された受け板２３とからなる。摺動子２１は板状であり、その上面には柱フランジ１ｂと平面的に同一の大きさのフランジ２２が溶接され一体化されている。フランジ２２には柱フランジ１ｂの突起部１ｃに対応した凹部２２ａが形成されており、摺動子２１は、フランジ２２を柱フランジ１ｂに重ね合わせ突起部１ｃを凹部２２ａに嵌合させることによって柱１の下端面に固定されている。なお、受け板２３の上面のうち平常時に外壁３よりも外側に位置する領域にはカバー２５が載置されている。   The support B1 includes a slider 21 that is displaced integrally with the column 1 on the lower end surface of the column 1 (following the column 1), and a receiving plate 23 on which a surface for sliding the slider 21 is formed. Become. The slider 21 has a plate shape, and a flange 22 having the same size as that of the column flange 1b is welded and integrated on the upper surface thereof. The flange 22 is formed with a recess 22a corresponding to the protrusion 1c of the column flange 1b. The slider 21 overlaps the column 22 with the flange 22 and fits the protrusion 1c with the recess 22a. 1 is fixed to the lower end surface. A cover 25 is placed in a region of the upper surface of the receiving plate 23 that is normally located outside the outer wall 3.

復元ゴムＢ２は、一端が１階の大梁２又は小梁７の下フランジにボルト１４にて固定され、他端がベタ基礎１１上面にベタ基礎１１と一体的に形成された台座部１３に対しアンカーボルト１５にて固定されている。   The restoration rubber B2 has one end fixed to the lower flange of the large beam 2 or the small beam 7 on the first floor with a bolt 14 and the other end to a pedestal portion 13 formed integrally with the solid foundation 11 on the upper surface of the solid foundation 11. It is fixed with anchor bolts 15.

摺動子２１の交換の際には、床下点検口４ｂから床下空間に潜入し、１階の大梁２の下フランジとベタ基礎１１との間に油圧ジャッキ等の揚重装置を介装し上部構造体Ａ１をわずかに（突起部１ｃと凹部２２ａの嵌合が解除される程度に）浮かすことによって、摺動子２１を柱１の下端面から分離し取り外すことができる。また、上部構造体Ａ１を浮かした状態で新たな摺動子２１を柱１の下端面に配置し、突起部１ｃと凹部２２ａとの位置を合わせつつ上部構造体Ａ１を降下させることによって、新たな摺動子２１を設置することができる。   When exchanging the slider 21, the underfloor inspection port 4 b is inserted into the underfloor space, and a lifting device such as a hydraulic jack is interposed between the lower flange of the large beam 2 on the first floor and the solid foundation 11. The slider 21 can be separated from the lower end surface of the column 1 and removed by slightly floating the structure A1 (to the extent that the fitting of the protrusion 1c and the recess 22a is released). Further, a new slider 21 is arranged on the lower end surface of the column 1 in a state where the upper structure A1 is floated, and the upper structure A1 is lowered while aligning the positions of the protrusion 1c and the recess 22a. A simple slider 21 can be installed.

このような構成によって、柱１の近辺に作業の妨げとなる外壁３が存在する外周部の柱１の下端面に摺動子２１が固定されている場合であっても、摺動子２１を外壁パネル３ａを取り外すことなく容易に交換することができ、コストの上昇や工期の長期化を抑制することができる。   With such a configuration, even when the slider 21 is fixed to the lower end surface of the column 1 at the outer peripheral portion where the outer wall 3 that hinders the work exists in the vicinity of the column 1, the slider 21 is arranged. It is possible to easily replace the outer wall panel 3a without removing it, and it is possible to suppress the cost increase and the construction period.

なお、免震構造の建物の場合、柱には引き抜き力が作用しないように設計されるので、柱１が浮き上がって突起部１ｃと凹部２２ａの嵌合が解除されることはない。また、摺動子２１及びフランジ２２はともに板状であり、摺動子２１と受け板２３との間で発生する摩擦力も極めて小さいので、水平力が作用した場合に転倒モーメントにより摺動子２１が転倒することで突起部１ｃと凹部２２ａの嵌合が解除され摺動子２１が分離することもない。   In the case of a base-isolated structure, the column 1 is designed so that a pulling force does not act on the column, so that the column 1 is not lifted and the fitting of the projection 1c and the recess 22a is not released. Further, both the slider 21 and the flange 22 are plate-like, and the frictional force generated between the slider 21 and the receiving plate 23 is extremely small. Therefore, when a horizontal force is applied, the slider 21 is caused by a falling moment. As a result of falling, the fitting of the projection 1c and the recess 22a is released and the slider 21 is not separated.

また、摺動子２１及びフランジ２２は板状であるので、支承Ｂ１の高さを低く抑えることができ、建物高さの法的な制限に対して対応しやすい免震建物とすることができる。   Moreover, since the slider 21 and the flange 22 are plate-shaped, the height of the support B1 can be kept low, and it can be set as the seismic isolation building which can respond easily to the legal restriction | limiting of building height. .

続いて、図３及び図４を用いて第２実施例について説明する。本実施例も第１実施例と同様に、鉄骨ＡＬＣ造の住宅である建物Ａにおける免震材の取付構造を示すものであり、図３は免震材まわりの平面図及び断面図、図４は免震材を構成する支承の図及び柱下端部への支承の取り付け状態を示す図である。なお、第１実施例と同一の構成については説明を省略し、異なる構成についてのみ説明する。   Subsequently, a second embodiment will be described with reference to FIGS. As in the first embodiment, the present embodiment also shows a structure for mounting a seismic isolation material in a building A, which is a steel-frame ALC structure. FIG. These are the figure of the support which comprises a seismic isolation material, and the figure which shows the attachment state of the support to a column lower end part. The description of the same configuration as that of the first embodiment will be omitted, and only a different configuration will be described.

本実施例における柱フランジ１ｂは１辺の長さが柱本体１ａの断面の１辺の長さよりも大きな略正方形であり柱本体１ａと２辺を一致させた状態で柱本体１ａに対しオフセットした状態で溶接され、柱１から延出した延出片１ｂ１が形成されている。柱フランジ１ｂの下端面で平面的に柱本体１ａの中央となる位置には円柱状の突起部１ｃが溶接されている。また、延出片１ｂ１には、摺動子２１上面のフランジ２２をボルト固定するためのボルト孔１ｂ２が、柱１に接合された大梁２と平面的に重ならない位置となるように穿設されている。また、柱１は、建物Ａの外周部においては、柱フランジ１ｂの延出片１ｂ１が建物Ａの内部側に位置するように配置されている。   The column flange 1b in this embodiment is substantially square in which the length of one side is larger than the length of one side of the cross section of the column main body 1a, and the column flange 1b is offset with respect to the column main body 1a in a state in which the two sides coincide with each other. An extended piece 1b1 that is welded in a state and extends from the column 1 is formed. A columnar protrusion 1c is welded at a position which is the center of the column main body 1a in plan view on the lower end surface of the column flange 1b. Further, a bolt hole 1b2 for bolting the flange 22 on the upper surface of the slider 21 is formed in the extending piece 1b1 so as not to overlap the large beam 2 joined to the column 1 in a plan view. ing. Moreover, the pillar 1 is arrange | positioned so that the extension piece 1b1 of the pillar flange 1b may be located in the inner side of the building A in the outer peripheral part of the building A.

摺動子２１の上面のフランジ２２は、柱フランジ１ｂと平面的に同一の大きさであり、柱１下端面に固定した際に柱１から延出する延出部２２ｂが形成されている。また、フランジ２２には、柱フランジ１ｂの突起部１ｃ及びボルト孔１ｂ２に対応して凹部２２ａ及び雌ねじが切られたボルト孔２２ｃが形成されている。そして、突起部１ｃを凹部２２ａに嵌合させるとともにボルト２４を締結することにより摺動子２１は柱フランジ１ｂに固定されている。   The flange 22 on the upper surface of the slider 21 has the same size in plan as the column flange 1b, and an extension 22b extending from the column 1 when formed on the lower end surface of the column 1 is formed. In addition, the flange 22 is formed with a recess 22a and a bolt hole 22c in which a female thread is cut, corresponding to the protrusion 1c and the bolt hole 1b2 of the column flange 1b. The slider 21 is fixed to the column flange 1b by fitting the protrusion 1c into the recess 22a and fastening the bolt 24.

摺動子２１の交換の際には、床下点検口４ｂから床下空間に潜入し、柱フランジ１ｂとフランジ２２とを締結しているボルト２４を緩めて取り外すとともに、実施例１と同様の手法で上部構造体Ａ１をわずかに浮かすことによって、摺動子２１を柱１の下端面から分離し取り外すことができる。また、上部構造体Ａ１を浮かした状態で新たな摺動子２１を柱１の下端面に配置し、突起部１ｃと凹部２２ａとの位置及びボルト孔１ｂ２、２２ｃ同士の位置を合わせつつ上部構造体Ａ１を降下させ、ボルト２４にて締結することによって、新たな摺動子２１を設置することができる。   When exchanging the slider 21, the underfloor inspection port 4 b enters the underfloor space, loosens and removes the bolt 24 that fastens the column flange 1 b and the flange 22, and uses the same method as in the first embodiment. By slightly floating the upper structure A1, the slider 21 can be separated from the lower end surface of the column 1 and removed. In addition, a new slider 21 is arranged on the lower end surface of the column 1 in a state where the upper structure A1 is floated, and the position of the protrusion 1c and the recess 22a and the position of the bolt holes 1b2 and 22c are aligned with each other. A new slider 21 can be installed by lowering the body A <b> 1 and fastening with the bolt 24.

このような構成によって、摺動子２１の固定をより確実なものとしながらも、摺動子２１を固定しているボルト２４は外壁３が存在する外周部においても容易に着脱することができ、摺動子２１の交換作業のコストの上昇や工期の長期化を抑制することができる。   With such a configuration, the bolt 24 fixing the slider 21 can be easily attached and detached even at the outer peripheral portion where the outer wall 3 exists, while securing the slider 21 more reliably. An increase in the cost of exchanging the slider 21 and an increase in the construction period can be suppressed.

続いて図５を用いて第３実施例について説明する。本実施例も第１実施例、第２実施例と同様に、鉄骨ＡＬＣ造の住宅である建物Ａにおける免震材の取付構造を示すものであり、図５は免震材を構成する支承の図及び柱下端部への支承の取り付け状態を示す図であり。なお、免震材まわりの構成は図１に準じており、第１実施例と同一の構成については説明を省略し、異なる構成についてのみ説明する。   Next, a third embodiment will be described with reference to FIG. As in the first and second embodiments, this embodiment also shows the structure for mounting the seismic isolation material in the building A, which is a steel-framed ALC house, and FIG. It is a figure which shows the attachment state of the support to a figure and a column lower end part. The configuration around the seismic isolation material is the same as in FIG. 1, and the description of the same configuration as in the first embodiment is omitted, and only the different configuration is described.

柱１は角形鋼管からなる柱本体１ａとその下端部に溶接された柱フランジ１ｂとからなる。柱フランジ１ｂは板状で柱本体１ａの断面の大きさに対応した略正方形である。柱フランジ１ｂの下端面の中央には円柱状で雄ねじが切られた突起部１ｃが溶接されている。   The column 1 includes a column main body 1a made of a square steel pipe and a column flange 1b welded to the lower end portion thereof. The column flange 1b is plate-shaped and has a substantially square shape corresponding to the cross-sectional size of the column main body 1a. At the center of the lower end surface of the column flange 1b, a projection 1c having a cylindrical shape and a male screw is welded.

摺動子２１の上面のフランジ２２は、正八角形の板状でありその中央部には柱フランジ１ｂの突起部１ｃに対応した雌ねじが切られた凹部２２ａが形成されている。そして、フランジ２２の形状に対応したスパナ、レンチ等の締結工具をフランジ２２に装着して回転させることによって、柱フランジ１ｂの突起部１ｃにフランジ２２の凹部２２ａを螺入に嵌合し摺動子２１が柱１の下端面に固定されている。   The flange 22 on the upper surface of the slider 21 has a regular octagonal plate shape, and a concave portion 22a in which a female screw corresponding to the protruding portion 1c of the column flange 1b is cut is formed at the center. Then, a fastening tool such as a wrench or a wrench corresponding to the shape of the flange 22 is mounted on the flange 22 and rotated, so that the recess 22a of the flange 22 is screwed into the protrusion 1c of the column flange 1b and slides. A child 21 is fixed to the lower end surface of the column 1.

摺動子２１の交換作業は、実施例１と同様の手法で上部構造体Ａ１をわずかに浮かした状態で、締結工具を用いて行うことができる。しかも、１階フランジ２２の位置は大梁２や小梁７よりも下方に位置しているので、締結工具が大梁２や小梁７干渉することなく容易に行うことができる。   The replacement work of the slider 21 can be performed using a fastening tool in a state where the upper structure A1 is slightly floated by the same method as in the first embodiment. Moreover, since the position of the first floor flange 22 is located below the large beam 2 and the small beam 7, the fastening tool can be easily performed without interfering with the large beam 2 and the small beam 7.

本発明に係る免震材の取付構造は、作業者が潜入可能な床下空間を有する免震建物全般に適用することができる。   The seismic isolation material mounting structure according to the present invention can be applied to any seismic isolation building having an underfloor space where an operator can infiltrate.

第１実施例、第３実施例における免震材まわりの平面図及び断面図である。It is the top view and sectional drawing around the seismic isolation material in the 1st example and the 3rd example. 第１実施例における免震材を構成する支承の図及び柱下端部への支承の取り付け状態を示す図である。It is a figure which shows the attachment state of the figure of the bearing which comprises the seismic isolation material in 1st Example, and the pillar lower end part. 第２実施例における免震材まわりの平面図及び断面図である。It is the top view and sectional drawing around a seismic isolation material in the 2nd example. 第２実施例における免震材を構成する支承の図及び柱下端部への支承の取り付け状態を示す図である。It is a figure which shows the attachment state of the figure of the bearing which comprises the seismic isolation material in 2nd Example, and a pillar lower end part. 第３実施例における免震材を構成する支承の図及び柱下端部への支承の取り付け状態を示す図である。It is a figure which shows the attachment state of the figure of the bearing which comprises the seismic isolation material in 3rd Example, and a pillar lower end part.

符号の説明Explanation of symbols

Ａ…免震建物
Ａ１…上部構造体
Ａ２…下部構造
Ｂ…免震材
Ｂ１…支承
Ｂ２…復元ゴム
１…柱
１ａ…柱本体
１ｂ…柱フランジ
１ｂ１…延出片
１ｂ２…ボルト孔
１ｃ…突起部
２…大梁
２ａ…エンドプレート
３…外壁
３ａ…外壁パネル
４…床
４ａ…床パネル
４ｂ…床下点検口
５…枠体
６…高力ボルト
７…小梁
１１…ベタ基礎
１２…受け板載置部
１３…台座部
１４…ボルト
１５…アンカーボルト
２１…摺動子
２２…フランジ
２２ａ…凹部
２２ｂ…延出部
２２ｃ…ボルト孔
２３…受け板
２４…ボルト
２５…カバー A ... Seismic isolation building A1 ... Upper structure A2 ... Lower structure B ... Seismic isolation material B1 ... Support B2 ... Restore rubber 1 ... Column 1a ... Column body 1b ... Column flange 1b1 ... Extended piece 1b2 ... Bolt hole 1c ... Projection DESCRIPTION OF SYMBOLS 2 ... Large beam 2a ... End plate 3 ... Outer wall 3a ... Outer wall panel 4 ... Floor 4a ... Floor panel 4b ... Underfloor inspection port 5 ... Frame body 6 ... High strength bolt 7 ... Small beam 11 ... Solid foundation 12 ... Base plate mounting part DESCRIPTION OF SYMBOLS 13 ... Base part 14 ... Bolt 15 ... Anchor bolt 21 ... Slider 22 ... Flange 22a ... Recessed part 22b ... Extension part 22c ... Bolt hole 23 ... Receiving plate 24 ... Bolt 25 ... Cover

Claims (2)

底面に突起部を備えた上部構造体と、
前記突起部に対応した凹部を有する板状のフランジを上面に備えた板状の摺動子と、からなり、
前記凹部に前記突起部を嵌入するとともに、前記上部構造体の底面から板状の延出片を水平方向に延出し、前記摺動子のフランジを前記延出片に対応させて延出して延出部を形成し、前記延出片に穿設したボルト孔と、前記延出部に穿設したねじ孔の位置を一致させてボルトにて締結して前記上部構造体の底面に前記摺動子を固定したことを特徴とする免震材の取付構造。 An upper structure with a protrusion on the bottom;
A plate-like slider provided with a plate-like flange having a recess corresponding to the protrusion on the upper surface;
The protrusion is inserted into the recess, a plate-like extension piece is extended in the horizontal direction from the bottom surface of the upper structure, and the flange of the slider is extended to correspond to the extension piece. Form a projecting portion, align the bolt holes drilled in the extension piece with the screw holes drilled in the extending portion, and fasten with bolts to slide on the bottom surface of the upper structure Seismic isolation material mounting structure characterized by fixing the child. 角形鋼管からなる柱本体と、該柱本体の下端部に溶接され該柱本体の断面の大きさに対応した略正方形で板状の柱フランジと、該柱フランジの下端面の中央に溶接された円柱状の突起部と、を備えた上部構造体と、
前記柱フランジと平面的に同一の大きさで前記突起部に対応した凹部を有する板状のフランジを上面に備えた板状の摺動子と、からなり、
前記凹部に前記突起部を嵌入した状態で前記柱フランジの底面に前記摺動子を固定したことを特徴とする免震材の取付構造。 A column main body made of a square steel pipe, welded to the lower end of the column main body and welded to the center of the lower end surface of the column flange and a substantially square plate-like column flange corresponding to the size of the cross section of the column main body An upper structure including a columnar protrusion , and
A plate-like slider provided on the upper surface with a plate-like flange having a concave portion corresponding to the protruding portion in the same size as the pillar flange ,
A structure for mounting a seismic isolation material, wherein the slider is fixed to the bottom surface of the column flange in a state where the protrusion is inserted into the recess.
JP2007323015A 2007-12-14 2007-12-14 Seismic isolation material mounting structure Active JP5107014B2 (en)

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JPS61282639A (en) * 1985-06-10 1986-12-12 Bridgestone Corp Flastic supporter
JP2740880B2 (en) * 1989-11-06 1998-04-15 清水建設株式会社 Seismic isolation device
JPH11223240A (en) * 1998-02-05 1999-08-17 Takenaka Komuten Co Ltd Setting method and setting structure of base isolating device
JPH11257398A (en) * 1998-03-10 1999-09-21 Tokai Rubber Ind Ltd Manufacture of rubber supporting body
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