JP6736384B2 - Seismic isolation building position adjustment jig - Google Patents

Seismic isolation building position adjustment jig Download PDF

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JP6736384B2
JP6736384B2 JP2016130819A JP2016130819A JP6736384B2 JP 6736384 B2 JP6736384 B2 JP 6736384B2 JP 2016130819 A JP2016130819 A JP 2016130819A JP 2016130819 A JP2016130819 A JP 2016130819A JP 6736384 B2 JP6736384 B2 JP 6736384B2
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山下 仁崇
仁崇 山下
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Daiwa House Industry Co Ltd
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この発明は、基礎に対して建物本体が免震構造とされた免震建物において、地震等によって動いた建物本体を元の原点位置に戻す作業に用いられる免震建物位置調整治具に関する。 The present invention relates to a seismic isolated building position adjusting jig used for returning a building main body that has moved due to an earthquake or the like to an original origin position in a seismic isolated building whose base body is a seismic isolated structure.

免震建物は、地震時に基礎に対して建物本体が水平移動することで、地震の横揺れが基礎から建物本体に伝達されないようにしている。この種の免震建物は、地震の揺れが収まったとき建物本体が元の原点位置に戻るように工夫されているが、外的要因や免震構造を構成する装置によっては正しく原点位置に戻らないこともある。 In a base-isolated building, the main body of the building moves horizontally with respect to the foundation during an earthquake to prevent the rolling of the earthquake from being transmitted from the foundation to the main body of the building. This type of seismic isolated building is designed so that the main body of the building returns to its original position when the shaking of the earthquake subsides, but it may not return to the original position correctly depending on external factors and the devices that make up the seismic isolation structure. Sometimes it doesn't.

このように建物本体が原点位置以外で静止した場合、水平力付与手段を用いて建物本体を水平方向に押して原点位置に戻すことが行われる。従来、水平力付与手段の反力を受けるために、建物の外側に杭、壁等を設置していた。例えば、特許文献1には、建物の外側に側壁を設けて、この側壁で水平力付与手段の反力を受けることが記載されている。また、基礎や建物本体等の躯体に木等の当て物をして、これで水平力付与手段の反力を受けることもある。 In this way, when the building body is stationary at a position other than the origin position, the building force is used to push the building body in the horizontal direction to return it to the origin position. Conventionally, in order to receive the reaction force of the horizontal force applying means, piles, walls, etc. have been installed outside the building. For example, Patent Document 1 describes that a side wall is provided on the outside of a building and the side wall receives the reaction force of the horizontal force applying means. In addition, a pad such as a tree may be placed on the body such as the foundation or the main body of the building to receive the reaction force of the horizontal force applying means.

特許文献2には、免震建物の免震層に設けられ減衰力を発生させるダンパーが提案されている。このダンパーは、地震の揺れが収まった後で初期位置に戻すことができる。 Patent Document 2 proposes a damper that is provided in a base isolation layer of a base isolated building and that generates a damping force. The damper can be returned to its initial position after the earthquake has subsided.

特開2016−932号公報JP, 2016-932, A 特許第5374230号公報Japanese Patent No. 5374230

従来のように、水平力付与手段の反力を受けるために建物の外側に杭、壁等を設置するのは、作業性が悪く、かつコストがかかる上、敷地の関係で実施が不可能な場合がある。また、躯体に木等の当て物をするのは、水平力付与手段の反力荷重をうまく躯体に伝達できなかったり、当て物が破損したりするという問題がある。 As in the past, installing piles, walls, etc. on the outside of the building to receive the reaction force of the horizontal force imparting means is inefficient in workability and costly, and cannot be implemented due to the site. There are cases. In addition, the use of a pad such as a tree on the body has a problem that the reaction force load of the horizontal force applying means cannot be transmitted to the body properly or the pad is damaged.

この発明の目的は、基礎と建物本体との間の狭い空間内でも基礎に容易に取り付けることができ、基礎等に悪影響を与えずに、基礎に対して建物本体を原点位置に戻すための水平力の反力を受けることができる免震建物位置調整治具を提供することである。 The object of the present invention is to easily attach to the foundation even in a narrow space between the foundation and the building body, and to horizontally move the building body to the origin position with respect to the foundation without adversely affecting the foundation. It is to provide a seismic isolated building position adjustment jig that can receive the reaction force of force.

この発明の免震建物位置調整治具は、基礎に対して建物本体の震動による水平移動を許容する免震建物において、地震後に前記基礎に対する前記建物本体の水平位置を水平力付与手段で前記基礎の一方向に移動させて調整する際に、前記水平力付与手段の反力を受ける治具として前記基礎に取り付けて使用される免震建物位置調整治具であって、
前記基礎の天端に載置される天端載置部と、この天端載置部における前記一方向と直交する方向の両端から下方に延び前記基礎の両側の立上り面にそれぞれ当接される一対の立上り面当接部とを備え、
前記天端載置部は、前記水平力付与手段で前記建物本体を前記一方向に移動させるときに前記水平力付与手段を当接させてこの水平力付与手段の前記一方向の反力を受ける反力受け部を有し、
前記天端載置部は2つの分割体で構成され、これら2つの分割体を互い締結する締結手段が設けられ、前記反力受け部は前記2つの分割体に亘り形成されていることを特徴とする。
The seismic isolation building position adjusting jig of the present invention is a seismic isolation building that allows horizontal movement of a building body with respect to a foundation, and the horizontal position of the building body with respect to the foundation after an earthquake is applied to the foundation by the horizontal force applying means. When moving and adjusting in one direction, a seismic isolated building position adjusting jig used by being attached to the foundation as a jig for receiving a reaction force of the horizontal force applying means,
A ceiling mounting portion mounted on the ceiling of the base, and downwardly extending from both ends of the ceiling mounting portion in a direction orthogonal to the one direction, and abutting on both rising surfaces of the foundation. A pair of rising surface contact portions,
The top mounting portion abuts the horizontal force applying means when the building body is moved in the one direction by the horizontal force applying means, and receives the reaction force of the horizontal force applying means in the one direction. It has a reaction force receiving part,
The top end mounting portion is composed of two divided bodies, a fastening means for fastening the two divided bodies to each other is provided, and the reaction force receiving portion is formed over the two divided bodies. And

この構成の免震建物位置調整治具は、天端載置部が基礎の天端に載置され、かつ一対の立上り面当接部が基礎の両側の立上り面を当接するように、基礎に取り付けられる。この状態から、2つの分割体を締結手段で締め付けることで、一対の立上り面当接部で基礎の両側の立上り面を強く挟み込んで固定する。天端載置部は2つの分割体で構成されているため、それぞれの分割体を基礎の幅方向の両側から互いに接近させて所定の位置に配置させることができる。このため、基礎と建物本体間の空間が狭くても、免震建物位置調整治具を基礎に取り付けることが可能である。 The seismic isolated building position adjustment jig of this configuration is installed on the foundation so that the top mounting portion is mounted on the top of the foundation and the pair of rising surface abutting portions contact the rising surfaces on both sides of the foundation. It is attached. From this state, the two divided bodies are tightened by the fastening means, and the rising surfaces on both sides of the foundation are strongly sandwiched and fixed by the pair of rising surface contact portions. Since the top mounting portion is composed of two divided bodies, each divided body can be arranged at a predetermined position by approaching each other from both sides in the width direction of the foundation. Therefore, even if the space between the foundation and the building body is narrow, it is possible to attach the seismic isolation building position adjusting jig to the foundation.

建物本体を基礎の一方向に移動させるに際し、水平力付与方向が前記一方向となるように水平力付与手段を配置し、この水平力付与手段の水平力付与方向の一端を建物本体、または建物本体に固定された部材に連結し、かつ他端を上記のように基礎に固定状態に取り付けられた免震建物位置調整治具の反力受け部に連結する。水平力付与手段が押圧力を付与する形態のものである場合、水平力付与手段の一端を建物本体、または建物本体に固定された部材の鉛直面に当て、かつ他端を免震建物位置調整治具の反力受け部に当てればよい。 When moving the building body in one direction of the foundation, the horizontal force application means is arranged so that the horizontal force application direction is the one direction, and one end of the horizontal force application direction of the horizontal force application means is the building body or the building. The other end is connected to the member fixed to the main body, and the other end is connected to the reaction force receiving portion of the seismic isolated building position adjusting jig fixedly attached to the foundation as described above. When the horizontal force applying means is of a form that applies a pressing force, one end of the horizontal force applying means is brought into contact with the vertical plane of the building main body or a member fixed to the building main body, and the other end is adjusted for seismic isolation of the building. It may be applied to the reaction force receiving portion of the jig.

この状態で水平力付与手段を動作させることで、基礎に対して建物本体が前記一方向に移動する。その際、水平力付与手段の反力を反力受け部が受ける。反力受け部は2つの分割体に亘り形成されているため、水平力付与手段の反力を2つの分割体の両方が受け持つ。このため、強い反力を受けることができる。また、2つの分割体を締結する締結手段に外力がかかって分割体同士が互いにずれたり、片方の分割体に大きな力がかかって、その分割体の立上り面当接部が基礎の立上り面に対して位置ずれたりするといった不都合が生じ難い。 By operating the horizontal force applying means in this state, the building body moves in the one direction with respect to the foundation. At that time, the reaction force receiving portion receives the reaction force of the horizontal force applying means. Since the reaction force receiving portion is formed over the two divided bodies, both of the two divided bodies bear the reaction force of the horizontal force applying means. Therefore, a strong reaction force can be received. In addition, an external force is applied to the fastening means for fastening the two divided bodies so that the divided bodies are displaced from each other, or a large force is applied to one of the divided bodies so that the rising surface contact portion of the divided body becomes the rising surface of the foundation. On the other hand, the inconvenience of being displaced is unlikely to occur.

この免震建物位置調整治具を用いると、従来のように、建物の外側に杭、壁等を設置したり、躯体に当て物をしたりする必要がないので、基礎等に悪影響を与えずに、基礎に対して建物本体を原点位置に戻す作業を行うことができる。また、使用する機材が少なくて済み、免震建物位置調整治具の取付け作業が容易である。さらに、敷地等の条件による作業の制限を受け難い。 By using this seismic isolation building position adjustment jig, there is no need to install piles, walls, etc. on the outside of the building or to put padding on the structure as in the past, so it does not adversely affect the foundation etc. , It is possible to perform the work of returning the building body to the origin position with respect to the foundation. In addition, it requires less equipment and is easy to install the seismic isolation building position adjustment jig. Furthermore, it is difficult for the work to be restricted due to the conditions of the site.

この発明において、上下に位置調節可能なねじ機構からなり、上端を前記建物本体の底面に当てて上方に位置調節されることで、前記基礎に対して前記建物本体を持ち上げる持上げ手段を備えていてもよい。 In the present invention, it is provided with a lifting means which is composed of a screw mechanism whose position can be adjusted up and down, and whose upper end is brought into contact with the bottom surface of the building body to be adjusted upwardly so as to lift the building body with respect to the foundation. Good.

建物本体の免震装置を交換する際には、建物本体を持ち上げる必要がある。この建物本体の持上げを、免震建物位置調整治具の持上げ手段によって行うことができる。従来、ジャッキを用いて建物本体を持ち上げていたが、その場合、基礎の外側や内側にジャッキの反力を受ける杭や支持材を設置する必要があり、多くの機材と労力を要した。免震建物位置調整治具に持上げ手段を設けることで、少ない機材でかつ軽微な労力で建物本体の持上げ作業を行うことができる。 When replacing the seismic isolation device of the building body, it is necessary to lift the building body. The lifting of the building body can be performed by the lifting means of the seismic isolation building position adjusting jig. Conventionally, the building main body was lifted using a jack, but in that case, it was necessary to install piles and support materials that receive the reaction force of the jack on the outside and inside of the foundation, which required a lot of equipment and labor. By providing the seismic isolation building position adjusting jig with a lifting means, it is possible to carry out the lifting work of the building body with a small amount of equipment and a little labor.

この発明において、前記天端載置部および前記立上り面当接部に亘り、これら前記天端載置部および前記立上り面当接部の前記直交する方向の外側面に接する補強部を有するとよい。 In the present invention, it is preferable to have a reinforcing portion that extends over the top end mounting portion and the rising surface contact portion and that contacts the outer surface of the top end mounting portion and the rising surface contact portion in the orthogonal direction. ..

免震建物位置調整治具を基礎に固定状態に取り付けるために締結手段を締め付けると、一対の立上り面当接部がそれぞれ基礎の立上り面からの反力を強く受ける。免震建物位置調整治具に天端載置部および立上り面当接部に亘る補強部を設けることで、上記反力に対する抵抗力が増し、立上り面当接部の変形が抑制される。 When the fastening means is tightened to attach the seismic isolation building position adjusting jig to the foundation in a fixed state, the pair of rising surface abutting portions strongly receive the reaction force from the rising surface of the foundation. By providing the seismic isolation building position adjusting jig with the reinforcing portion extending over the ceiling mounting portion and the rising surface contact portion, the resistance force against the reaction force is increased and the deformation of the rising surface contact portion is suppressed.

この発明の免震建物位置調整治具は、基礎に対して建物本体の震動による水平移動を許容する免震建物において、地震後に前記基礎に対する前記建物本体の水平位置を水平力付与手段で前記基礎の一方向に移動させて調整する際に、前記水平力付与手段の反力を受ける治具として前記基礎に取り付けて使用される免震建物位置調整治具であって、前記基礎の天端に載置される天端載置部と、この天端載置部における前記一方向と直交する方向の両端から下方に延び前記基礎の両側の立上り面にそれぞれ当接される一対の立上り面当接部とを備え、前記天端載置部は、前記水平力付与手段で前記建物本体を前記一方向に移動させるときに前記水平力付与手段を当接させてこの水平力付与手段の前記一方向の反力を受ける反力受け部を有し、前記天端載置部は2つの分割体で構成され、これら2つの分割体を互い締結する締結手段が設けられ、前記反力受け部は前記2つの分割体に亘り形成されているため、基礎と建物本体との間の狭い空間内でも基礎に容易に取り付けることができ、基礎等に悪影響を与えずに、基礎に対して建物本体を原点位置に戻すための水平力の反力を受けることができる。 The seismic isolation building position adjusting jig of the present invention is a seismic isolation building that allows horizontal movement of a building body with respect to a foundation, and the horizontal position of the building body with respect to the foundation after an earthquake is applied to the foundation by the horizontal force applying means. When moving and adjusting in one direction, a seismic isolated building position adjusting jig used by being attached to the foundation as a jig for receiving a reaction force of the horizontal force applying means, A top end mounting portion to be placed, and a pair of rising surface abutting portions that extend downward from both ends of the top end mounting portion in a direction orthogonal to the one direction and abut on the rising surfaces on both sides of the foundation. And a top end mounting portion abutting the horizontal force imparting means when the building body is moved in the one direction by the horizontal force imparting means, thereby causing the horizontal force imparting means to move in the one direction. A reaction force receiving portion for receiving the reaction force of the top end mounting portion, the top end mounting portion is composed of two divided bodies, and fastening means for fastening these two divided bodies to each other is provided, and the reaction force receiving portion is Since it is formed over two divided bodies, it can be easily attached to the foundation even in a narrow space between the foundation and the building body, and the building body is the origin of the foundation without adversely affecting the foundation. It can receive the reaction force of the horizontal force to return to the position.

この発明の一実施形態にかかる免震建物位置調整治具を基礎に取り付けた状態を示す(A)正面図、(B)側面図、および(C)平面図である。It is the front view (A), the side view, and the plan view which show the state where the base-isolated building position adjusting jig concerning one embodiment of the present invention was attached to the foundation. 図1(C)のII−II断面図である。It is a II-II sectional view of FIG. 1(C). 同免震建物位置調整治具を基礎に取り付ける動作を示す(A)正面図、および(B)平面図である。It is (A) front view and (B) top view which show the operation|movement which attaches the same base-isolated building position adjustment jig to a foundation. 同免震建物位置調整治具を用いて原点位置調整を行う免震建物の支承部の(A)原点位置調整前の状態を示す側面図、および(B)原点位置調整後の状態を示す側面図である。(A) A side view showing a state before the origin position adjustment of the base part of the base isolation building where the origin position adjustment is performed using the same base isolation building position adjustment jig, and (B) a side view showing the state after the origin position adjustment It is a figure. 同免震建物位置調整治具を用いて建物本体を持ち上げるときの(A)持上げ前の状態を示す正面図、および(B)持上げ後の状態を示す正面図である。It is a front view which shows the state before (A) lifting when raising a building main body using the same base isolation building position adjustment jig, and the front view which shows the state after (B) lifting.

この発明の一実施形態を図1〜図5と共に説明する。
図1はこの発明の一実施形態にかかる免震建物位置調整治具を基礎に取り付けた状態を示す正面図、側面図、および平面図である。この免震建物位置調整治具1は、免震構造とされた免震建物において、地震後に基礎21に対する建物本体の水平位置を調整する際に、図1に示すように基礎21に固定して使用される。基礎21は、例えば布基礎状である。その場合、基礎長手方向が請求項で言う「基礎の一方向」であり、基礎幅方向が請求項で言う「一方向と直交する方向」である。
An embodiment of the present invention will be described with reference to FIGS.
FIG. 1 is a front view, a side view, and a plan view showing a state in which a seismic isolation building position adjusting jig according to an embodiment of the present invention is attached to a foundation. This seismic isolation building position adjusting jig 1 is fixed to the foundation 21 as shown in FIG. 1 when adjusting the horizontal position of the building main body with respect to the foundation 21 after the earthquake in the seismic isolation structure having the seismic isolation structure. used. The foundation 21 is, for example, a cloth foundation. In that case, the base longitudinal direction is the "one direction of the base" in the claims, and the base width direction is the "direction orthogonal to the one direction" in the claims.

この免震建物位置調整治具1は、基礎21の天端21aに載置される天端載置部2と、この天端載置部2における基礎幅方向の両端から下方に延び基礎21の両側の立上り面21b,21bにそれぞれ当接させられる一対の立上り面当接部3,3とを備える。天端載置部2は、原点位置調整時に後述する水平力付与手段の反力を受ける反力受け部4を有する。 The seismic isolation building position adjusting jig 1 includes a top end placing portion 2 placed on a top end 21a of a foundation 21 and a bottom 21 extending downward from both ends of the top end placing portion 2 in the foundation width direction. It is provided with a pair of rising surface contact portions 3 and 3 which are respectively brought into contact with the rising surfaces 21b and 21b on both sides. The top mounting portion 2 has a reaction force receiving portion 4 that receives a reaction force of a horizontal force applying means described later when adjusting the origin position.

また、この実施形態の免震建物位置調整治具1は、前記天端載置部2および立上り面当接部3,3とは別に、各立上り面当接部3,3を補強する補強部5,5と、建物本体の持上げ手段6,6とを備える。天端載置部2の底面、および立上り面当接部3,3の内側面には、ゴム等の弾性材7が設けられている。 In addition, the seismic isolated building position adjusting jig 1 of this embodiment includes a reinforcement portion that reinforces each of the rising surface contact portions 3 and 3, in addition to the top end mounting portion 2 and the rising surface contact portions 3 and 3. 5, 5 and lifting means 6, 6 for the building body. An elastic material 7 such as rubber is provided on the bottom surface of the top mounting portion 2 and the inner side surfaces of the rising surface contact portions 3 and 3.

免震建物位置調整治具1は、互いに線対称形である2つの治具分割体1A,1Bで構成されている(図3参照)。治具分割体1A,1Bは、天端載置部2を等分に分割した天端載置部分割体2A,2Bと、各1個ずつの立上り面当接部3、補強部5、および持上げ手段6とからなる。反力受け部4は、2つの天端載置部分割体2A,2Bに亘り形成されている。これら2つの治具分割体1A,1Bは締結手段8によって互いに締結される。締結手段8は、例えばボルト8aとナット8bとからなる。 The seismic isolation building position adjusting jig 1 is composed of two jig division bodies 1A and 1B which are line-symmetrical to each other (see FIG. 3). The jig division bodies 1A and 1B are composed of the top end placement portion division bodies 2A and 2B obtained by dividing the top end placement portion 2 into equal parts, one rising surface contact portion 3, one reinforcement portion 5, and one The lifting means 6 is provided. The reaction force receiving portion 4 is formed over the two top end mounting portion divided bodies 2A and 2B. These two jig divided bodies 1A and 1B are fastened to each other by fastening means 8. The fastening means 8 comprises, for example, a bolt 8a and a nut 8b.

免震建物位置調整治具1の各部について、より詳しく説明する。
天端載置部分割体2A,2Bは、底板部分11、天板部分12、内側板部分13、外側板部分14からなり、正面視で長方形をしている。天端載置部分割体2A,2Bの前後の面は開放している。図の例では計4枚の板材を溶接で固定して天端載置部分割体2A,2Bを構成しているが、天端載置部分割体2A,2Bは一体物であってもよい。天端載置部分割体2A,2Bの基礎長手方向の中央部に、正面形状三角形のリブ15が底板部分11から外側板部分14にかけて設けられている。
Each part of the seismic isolated building position adjusting jig 1 will be described in more detail.
The top end mounting portion divided bodies 2A and 2B are composed of a bottom plate portion 11, a top plate portion 12, an inner plate portion 13, and an outer plate portion 14, and have a rectangular shape in a front view. The front and rear surfaces of the top end mounting portion divided bodies 2A and 2B are open. In the example shown in the figure, a total of four plate members are fixed by welding to form the top end mounting portion divided bodies 2A and 2B, but the top end mounting portion divided bodies 2A and 2B may be integrated. .. A rib 15 having a triangular front shape is provided from the bottom plate portion 11 to the outer plate portion 14 in the central portion of the top end mounting portion divided bodies 2A and 2B in the basic longitudinal direction.

立上り面当接部3は板状の部材からなり、その上端が前記底板部分11の底面外側端に溶接で固定されている。この立上り面当接部3も、天端載置部分割体2A,2Bと一体物とされていてもよい。 The rising surface contact portion 3 is made of a plate-like member, and the upper end thereof is fixed to the outer end of the bottom surface of the bottom plate portion 11 by welding. The rising surface contact portion 3 may also be integrated with the top end placement portion divided bodies 2A and 2B.

反力受け部4は、天端載置部分割体2A,2Bの各内側板部分13,13からなる。この免震建物位置調整治具1が反力を受ける水平力付与手段27(図4)は押圧力を付与するタイプであるため、この実施形態の場合、反力受け部4は各内側板部分13の正面で押圧力を受ける。図2に示すように、内側板部分13には、締結手段8のボルト8aを挿通する貫通孔13aが設けられている。 The reaction force receiving portion 4 is composed of the inner side plate portions 13, 13 of the top end mounting portion divided bodies 2A, 2B. Since the horizontal force applying means 27 (FIG. 4) that receives the reaction force of the seismic isolation building position adjusting jig 1 is a type that applies a pressing force, in the case of this embodiment, the reaction force receiving portion 4 includes each inner plate portion. A pressing force is applied in front of 13. As shown in FIG. 2, the inner plate portion 13 is provided with a through hole 13a through which the bolt 8a of the fastening means 8 is inserted.

補強部5は板状の部材であり、複数の固定ねじ16により天端載置部分割体2A,2Bの外側板部分14および立上り面当接部3に固定される。図2の断面図に示すように、補強部5にねじ挿通孔17が設けられ、かつ外側板部分14および立上り面当接部3にそれぞれねじ孔14a,3aが設けられている。基礎幅方向の外側から固定ねじ16をねじ挿通孔17に挿通し、そのねじ部をねじ孔14a,3aに螺着することで、補強板5を固定する。このように天端載置部分割体2A,2Bの外側板部分14および立上り面当接部3に補強部5を固定することにより、立上り面当接部3を基礎21の立上り面21bから離す方向の力を補強部5で受けることができる。 The reinforcing portion 5 is a plate-shaped member, and is fixed to the outer plate portion 14 and the rising surface contact portion 3 of the top end placement portion divided bodies 2A and 2B by a plurality of fixing screws 16. As shown in the sectional view of FIG. 2, the reinforcing portion 5 is provided with a screw insertion hole 17, and the outer plate portion 14 and the rising surface abutting portion 3 are provided with screw holes 14a and 3a, respectively. The reinforcing plate 5 is fixed by inserting the fixing screw 16 into the screw insertion hole 17 from the outside in the base width direction and screwing the screw portion into the screw holes 14a and 3a. In this way, by fixing the reinforcing portion 5 to the outer side plate portion 14 and the rising surface contact portion 3 of the top end mounting portion divided bodies 2A and 2B, the rising surface contact portion 3 is separated from the rising surface 21b of the foundation 21. A directional force can be received by the reinforcing portion 5.

持上げ手段6は、上下に位置調節可能なねじ機構からなる。具体的には、天端載置部分割体2A,2Bの天板部分12に設けられた上下方向のねじ孔18に螺合するボルト6aと、このボルト6aに螺着したナット6bとからなる。例えば、ボルト6aは頭部を下側にしてねじ孔18に下方から螺合させられ、このボルト6aのねじ部における天板部分12よりも上側の部位にナット6bが螺着させられている。ボルト6aの上端面よりもナット6bの上端面の方が上位となっている。持上げ手段6は、リブ15を挟んで基礎幅方向の2箇所に設けられている。 The lifting means 6 is composed of a screw mechanism whose vertical position can be adjusted. Specifically, it is composed of a bolt 6a screwed into a vertical screw hole 18 provided in the top plate portion 12 of the top end placement portion divided bodies 2A and 2B, and a nut 6b screwed to the bolt 6a. .. For example, the bolt 6a is screwed into the screw hole 18 from below with its head facing down, and the nut 6b is screwed onto the screw portion of the bolt 6a above the top plate portion 12. The upper end surface of the nut 6b is higher than the upper end surface of the bolt 6a. The lifting means 6 are provided at two positions in the base width direction with the rib 15 interposed therebetween.

図4はこの免震建物位置調整治具1を用いて原点位置調整を行う免震建物の支承部を示す。免震建物は、布基礎状の基礎21と建物本体(床梁)22間に球体からなる複数の支承材23が介在しており、基礎21に対して建物本体22の震動による水平移動を許容する免震構造とされている。また、支承部には、支承材23の他に、横揺れのエネルギーを吸収するダンパー(図示せず)、地震時以外における横風に抵抗する風揺れ固定装置24等が設けられている。 FIG. 4 shows a bearing portion of a seismic isolated building whose origin position is adjusted by using this seismic isolated building position adjusting jig 1. In a seismic isolated building, a plurality of support members 23 made of spheres are interposed between a foundation 21 having a cloth foundation shape and a building body (floor beam) 22 to allow the foundation 21 to horizontally move due to the vibration of the building body 22. It has a seismic isolation structure. In addition to the support member 23, the support portion is provided with a damper (not shown) that absorbs rolling energy, a wind-sway fixing device 24 that resists side winds other than during an earthquake, and the like.

風揺れ固定装置24は、基礎長手方向に長い油圧式のシリンダ24aを有し、このシリンダ24aが連結部材25を介して基礎21に連結され、かつシリンダ24aに対して突没するピストンロッド24bが連結部材26を介して建物本体22に連結されている。シリンダ24aはピストンによって仕切られた2つのシリンダ室を有し、通常時は、2つのシリンダ室間で油の流通が規制されていて横風に対して抵抗力が発揮するが、地震時には、2つのシリンダ室間で油の流通が可能になり、基礎21に対する建物本体22の水平移動を許容する。 The wind-sway fixing device 24 has a hydraulic cylinder 24a that is long in the longitudinal direction of the foundation. The cylinder 24a is connected to the foundation 21 via a connecting member 25, and a piston rod 24b protruding and retracting from the cylinder 24a is provided. It is connected to the building body 22 via a connecting member 26. The cylinder 24a has two cylinder chambers partitioned by a piston. Normally, the oil flow is restricted between the two cylinder chambers and a resistance force against cross wind is exerted. Oil can be circulated between the cylinder chambers, allowing the building body 22 to move horizontally with respect to the foundation 21.

上記風揺れ固定装置24は、地震の揺れが収まっても、2つのシリンダ室の油が元の状態に戻らず、風揺れ固定装置24が地震前と地震後とで異なる動作位置となることがある。その場合、図4(A)のように、建物本体22が原点位置からずれた位置、すなわち基礎21の中心C1と建物本体22の中心C2とがずれた位置で静止した状態となる。免震建物位置調整治具1は、このような場合に建物本体22を原点位置に戻す作業で使用される。 In the wind sway fixing device 24, the oil in the two cylinder chambers does not return to the original state even if the sway of the earthquake is subdued, and the wind sway fixing device 24 may have different operating positions before and after the earthquake. is there. In that case, as shown in FIG. 4A, the building body 22 is in a stationary state at a position displaced from the origin position, that is, at a position where the center C1 of the foundation 21 and the center C2 of the building body 22 are displaced. The seismic isolation building position adjusting jig 1 is used in the work of returning the building body 22 to the original position in such a case.

建物本体22の原点位置復帰作業は次のように行う。
まず、基礎21における風揺れ固定装置24の建物本体側端から一定距離だけ離れた位置に免震建物位置調整治具1を取り付ける。その取付け方法は、図3に示すように、2つの治具分割体1A,1Bを基礎21の幅方向の両側から互いに接近させ、各天端載置部分割体2A,2Bが基礎21の天端21aに載置され、かつ一対の立上り面当接部3,3が基礎21の両側の立上り面21b,21bにそれぞれ当接するように、治具分割体1A,1Bを配置する。その状態で、図1、図2のように、2つの治具分割体1A,1Bを締結手段8で互い連結し、さらに締結手段8で締め付けることで、一対の立上り面当接部21b,21bで基礎21の両側の立上り面21b,21bを強く挟み込んで固定する。
The work for returning the home position of the building body 22 is performed as follows.
First, the seismic isolation building position adjusting jig 1 is attached to the foundation 21 at a position separated from the building main body side end of the wind sway fixing device 24 by a predetermined distance. As shown in FIG. 3, the attachment method is such that the two jig divided bodies 1A and 1B are brought close to each other from both sides in the width direction of the foundation 21, and the top end placement portion divided bodies 2A and 2B are placed on the foundation 21. The jig divided bodies 1A and 1B are arranged so that the jig divided bodies 1A and 1B are placed on the end 21a and the pair of rising surface abutting portions 3 and 3 abut on the rising surfaces 21b and 21b on both sides of the foundation 21, respectively. In that state, as shown in FIGS. 1 and 2, the two jig divided bodies 1A and 1B are connected to each other by the fastening means 8 and further fastened by the fastening means 8, whereby the pair of rising surface contact portions 21b and 21b. Then, the rising surfaces 21b, 21b on both sides of the foundation 21 are firmly sandwiched and fixed.

免震建物位置調整治具1を基礎21に固定状態に取り付けるために、2つの治具分割体1A,1Bを締結手段8で強く締め付けると、一対の立上り面当接部3,3がそれぞれ基礎21の立上り面21b,21bからの反力を強く受ける。しかし、天端載置部2および立上り面当接部3に亘り補強部5が設けられているため、上記反力に対する抵抗力が増し、立上り面当接部3,3の変形が抑制される。 In order to attach the seismic isolation building position adjusting jig 1 to the foundation 21 in a fixed state, the two jig divided bodies 1A and 1B are strongly tightened by the fastening means 8, and the pair of rising surface contact portions 3 and 3 are respectively the foundation. The reaction force from the rising surfaces 21b and 21b of 21 is strongly received. However, since the reinforcing portion 5 is provided over the top end mounting portion 2 and the rising surface contact portion 3, the resistance against the reaction force increases, and the deformation of the rising surface contact portions 3 and 3 is suppressed. ..

免震建物位置調整治具1は2つの治具分割体1A,1Bで構成されているため、上記のように、それぞれの治具分割体1A,1Bを基礎21の幅方向の両側から互いに接近させて所定の位置に配置させることができる。このため、基礎21と建物本体22との間の空間が狭くても、免震建物位置調整治具1の基礎21への取付けが容易である。また、天端載置部2の底面、および立上り面当接部3,3の内側面に弾性材7が設けられているため、基礎21の天端21aおよび立上り面21b,21bに多少の凹凸があっても、天端載置部2および立上り面当接部3,3を基礎21の天端21aおよび立上り面21b,21bにそれぞれ密着させて強固に固定することができる。 Since the seismic isolation building position adjusting jig 1 is composed of two jig divided bodies 1A and 1B, as described above, the respective jig divided bodies 1A and 1B approach each other from both sides in the width direction of the foundation 21. And can be placed at a predetermined position. Therefore, even if the space between the foundation 21 and the building body 22 is small, the seismic isolation building position adjusting jig 1 can be easily attached to the foundation 21. Further, since the elastic member 7 is provided on the bottom surface of the top end mounting portion 2 and the inner side surfaces of the rising surface contact portions 3 and 3, the top end 21a and the rising surfaces 21b and 21b of the foundation 21 are slightly uneven. Even if there is, the top end mounting portion 2 and the rising surface abutting portions 3, 3 can be firmly attached to the top end 21a and the rising surfaces 21b, 21b of the foundation 21 by closely contacting them.

上記のように基礎21に免震建物位置調整治具1を固定した後、図4(A)のように、風揺れ固定装置24のピストンロッド24b側の連結部材26と免震建物位置調整治具1の反力受け部4(図1)との間に水平力付与手段27を配置する。水平力付与手段27としては、例えばジャーナルジャッキを横向きにして使用する。連結部材26の水平力付与手段27と対向する面が傾斜面である場合は、連結部材26と水平力付与手段27との間に、広い鉛直面で水平力付与手段27と接触する補助部材28を介在させるとよい。 After fixing the seismic isolated building position adjusting jig 1 to the foundation 21 as described above, as shown in FIG. 4(A), the connecting member 26 on the piston rod 24b side of the wind shake fixing device 24 and the seismic isolated building position adjusting jig are provided. The horizontal force applying means 27 is arranged between the tool 1 and the reaction force receiving portion 4 (FIG. 1). As the horizontal force applying means 27, for example, a journal jack is used in a lateral direction. When the surface of the connecting member 26 facing the horizontal force applying means 27 is an inclined surface, an auxiliary member 28 that contacts the horizontal force applying means 27 with a wide vertical plane between the connecting member 26 and the horizontal force applying means 27. Should be interposed.

この状態で水平力付与手段27が押圧力を付与すると、つまり水平力付与手段27が基礎長手方向に伸長すると、補助部材28および連結部材26を介して建物本体22が図の左方向に押される。これにより、図4(B)のように、基礎21の中心C1と建物本体22の中心C2とが一致する原点位置となる。 When the horizontal force applying means 27 applies a pressing force in this state, that is, when the horizontal force applying means 27 extends in the basic longitudinal direction, the building main body 22 is pushed leftward in the figure via the auxiliary member 28 and the connecting member 26. .. As a result, as shown in FIG. 4B, the center position C1 of the foundation 21 and the center C2 of the building body 22 are at the origin position.

水平力付与手段27が押圧力を付与する際、水平力付与手段27の反力を免震建物位置調整治具1の反力受け部4が受ける。反力受け部4は2つの治具分割体1A,1Bに亘り形成されているため、水平力付与手段4の反力を2つの治具分割体1A,1Bの両方が受け持つ。このため、強い反力を受けることができる。また、2つの治具分割体1A,1Bを締結する締結手段8に外力がかかって治具分割体1A,1B同士が互いにずれたり、片方の治具分割体1A,1Bに大きな力がかかって、その治具分割体1A,1Bの立上り面当接部3が基礎21の立上り面21bに対して位置ずれたりするといった不都合が生じ難い。 When the horizontal force applying means 27 applies the pressing force, the reaction force of the horizontal force applying means 27 is received by the reaction force receiving portion 4 of the seismic isolated building position adjusting jig 1. Since the reaction force receiving portion 4 is formed over the two jig divided bodies 1A and 1B, both of the two jig divided bodies 1A and 1B bear the reaction force of the horizontal force applying means 4. Therefore, a strong reaction force can be received. Further, an external force is applied to the fastening means 8 for fastening the two jig divided bodies 1A and 1B, the jig divided bodies 1A and 1B are displaced from each other, or a large force is applied to one of the jig divided bodies 1A and 1B. The inconvenience that the rising surface contact portion 3 of the jig divided bodies 1A and 1B is displaced with respect to the rising surface 21b of the foundation 21 is unlikely to occur.

この免震建物位置調整治具1を用いると、従来のように、建物の外側に杭、壁等を設置したり、躯体に当て物をしたりする必要がないので、基礎21等に悪影響を与えずに、基礎21に対して建物本体22を原点位置に戻す作業を行うことができる。また、使用する機材が少なくて済み、免震建物位置調整治具1の取付け作業が容易である。さらに、敷地等の条件による作業の制限を受け難い。 By using this seismic isolation building position adjusting jig 1, there is no need to install piles, walls, etc. on the outside of the building or to put a padding on the skeleton as in the conventional case, so that the foundation 21 etc. is adversely affected. Instead, the work for returning the building body 22 to the origin position can be performed on the foundation 21. In addition, the amount of equipment used is small, and the work for attaching the seismic isolated building position adjusting jig 1 is easy. Furthermore, it is difficult for the work to be restricted due to the conditions of the site.

また、この免震建物位置調整治具1は、支承部に設けられている免震装置、例えば支承材23、ダンパー、風揺れ固定装置24を交換する際に、建物本体22を若干持ち上げるときにも使用される。 Further, the seismic isolation building position adjusting jig 1 is used when the building main body 22 is slightly lifted when exchanging seismic isolation devices provided in the support portion, such as the support member 23, the damper, and the wind sway fixing device 24. Also used.

図5は建物本体22の持上げ動作の説明図である。図5(A)に示すように、建物本体22における持上げ箇所の下方となる基礎21の位置に、免震建物位置調整治具1を固定する。そして、持上げ手段6のボルト6aを上昇する側に回して、図5(B)のように、ナット6bを建物本体22の底面に当接させる。その状態でボルト6aをさらに回すことにより、ナット6bに押されて建物本体22が持ち上げる。ボルト6aの回し操作は、天端載置部分割体2A,2Bの前後の開口部から天端載置部分割体2A,2B内に手やレンチを入れて行う。 FIG. 5 is an explanatory diagram of a lifting operation of the building body 22. As shown in FIG. 5A, the seismic isolation building position adjusting jig 1 is fixed to the position of the foundation 21 below the lifting point in the building body 22. Then, the bolt 6a of the lifting means 6 is turned to the ascending side, and the nut 6b is brought into contact with the bottom surface of the building body 22 as shown in FIG. 5B. By further rotating the bolt 6a in this state, the building body 22 is lifted by being pushed by the nut 6b. The operation of turning the bolt 6a is performed by inserting a hand or a wrench into the top end mounting portion divided bodies 2A and 2B from the front and rear openings of the top end mounting portion divided bodies 2A and 2B.

この実施形態のように、ボルト6aの上端にナット6bを取り付けてナット6bが建物本体22の底面に当接するようにする構成されていると、ボルト6aが直接に建物本体22の底面に当接する場合よりも、建物本体22の底面と持上げ手段6との当接面積を広くすることができ、持ち上げる力が建物本体22に伝わり易い。 When the nut 6b is attached to the upper end of the bolt 6a so that the nut 6b contacts the bottom surface of the building body 22 as in this embodiment, the bolt 6a directly contacts the bottom surface of the building body 22. The contact area between the bottom surface of the building body 22 and the lifting means 6 can be made wider than in the case, and the lifting force is easily transmitted to the building body 22.

従来、ジャッキを用いて建物本体22を持ち上げていたが、その場合、基礎21の外側や内側にジャッキの反力を受ける杭や支持材を設置する必要があり、多くの機材と設置の労力を要した。免震建物位置調整治具1に持上げ手段を設けることで、機材および労力を軽減できる。 Conventionally, the building main body 22 was lifted using a jack, but in that case, it is necessary to install piles and supporting materials that receive the reaction force of the jack on the outside and the inside of the foundation 21, which requires a lot of equipment and labor for installation. Needed By providing the seismic isolated building position adjusting jig 1 with a lifting means, the equipment and labor can be reduced.

1…免震建物位置調整治具
1A…治具分割体
1B…治具分割体
2…天端載置部
2A…天端載置部分割体
2B…天端載置部分割体
3…立上り面当接部
4…反力受け部
5…補強部
6…持上げ手段
8…締結手段
21…基礎
21a…天端
21b…立上り面
22…建物本体
27…水平力付与手段
DESCRIPTION OF SYMBOLS 1... Seismic isolation building position adjustment jig 1A... Jig division 1B... Jig division 2... Top mounting part 2A... Top mounting part 2B... Top mounting part 3... Standing surface Contact portion 4... Reaction force receiving portion 5... Reinforcing portion 6... Lifting means 8... Fastening means 21... Foundation 21a... Top 21b... Standing surface 22... Building body 27... Horizontal force applying means

Claims (3)

基礎に対して建物本体の震動による水平移動を許容する免震建物において、地震後に前記基礎に対する前記建物本体の水平位置を水平力付与手段で前記基礎の一方向に移動させて調整する際に、前記水平力付与手段の反力を受ける治具として前記基礎に取り付けて使用される免震建物位置調整治具であって、
前記基礎の天端に載置される天端載置部と、この天端載置部における前記一方向と直交する方向の両端から下方に延び前記基礎の両側の立上り面にそれぞれ当接される一対の立上り面当接部とを備え、
前記天端載置部は、前記水平力付与手段で前記建物本体を前記一方向に移動させるときに前記水平力付与手段を当接させてこの水平力付与手段の前記一方向の反力を受ける反力受け部を有し、
前記天端載置部は2つの分割体で構成され、これら2つの分割体を互い締結する締結手段が設けられ、前記反力受け部は前記2つの分割体に亘り形成されている、
免震建物位置調整治具。
In a base-isolated building that allows horizontal movement due to the vibration of the building body with respect to the foundation, when adjusting the horizontal position of the building body with respect to the foundation after the earthquake by moving in one direction of the foundation with horizontal force applying means, A seismic isolated building position adjusting jig used by being attached to the foundation as a jig for receiving a reaction force of the horizontal force applying means,
A ceiling mounting portion mounted on the ceiling of the base, and downwardly extending from both ends of the ceiling mounting portion in a direction orthogonal to the one direction, and abutting on both rising surfaces of the foundation. A pair of rising surface contact portions,
The top mounting portion abuts the horizontal force applying means when the building body is moved in the one direction by the horizontal force applying means, and receives the reaction force of the horizontal force applying means in the one direction. It has a reaction force receiving part,
The ceiling mount portion is composed of two divided bodies, a fastening means for fastening the two divided bodies to each other is provided, and the reaction force receiving portion is formed over the two divided bodies.
Seismic isolation building position adjustment jig.
請求項1に記載の免震建物位置調整治具において、上下に位置調節可能なねじ機構からなり、上端を前記建物本体の底面に当てて上方に位置調節されることで、前記基礎に対して前記建物本体を持ち上げる持上げ手段を備えた免震建物位置調整治具。 The seismic isolation building position adjusting jig according to claim 1, comprising a screw mechanism capable of vertically adjusting a position, and adjusting an upper position by applying an upper end to a bottom surface of the building body to thereby adjust the position to the foundation. A seismic isolated building position adjusting jig having lifting means for lifting the building body. 請求項1または請求項2に記載の免震建物位置調整治具において、前記天端載置部および前記立上り面当接部に亘り、これら前記天端載置部および前記立上り面当接部の前記直交する方向の外側面に接する補強部を有する免震建物位置調整治具。 The seismic isolated building position adjusting jig according to claim 1 or 2, wherein the top end mounting portion and the rising surface contact portion extend over the top end mounting portion and the rising surface contact portion. A seismic isolated building position adjusting jig having a reinforcing portion in contact with the outer surface in the orthogonal direction.
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