JP5540044B2 - Hydraulic jack jig used for restoration work for uneven settlement of buildings and repair method for unevenly settled buildings using this jig - Google Patents

Hydraulic jack jig used for restoration work for uneven settlement of buildings and repair method for unevenly settled buildings using this jig Download PDF

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JP5540044B2
JP5540044B2 JP2012164226A JP2012164226A JP5540044B2 JP 5540044 B2 JP5540044 B2 JP 5540044B2 JP 2012164226 A JP2012164226 A JP 2012164226A JP 2012164226 A JP2012164226 A JP 2012164226A JP 5540044 B2 JP5540044 B2 JP 5540044B2
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foundation
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jack
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康敏 中原
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エス・ピー・アイ・イグティブ社株式会社
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この発明は、軟弱地盤や地盤の液状化により、不同沈下して傾いた建物の水準レベルを回復する修復工事に関し、この修復工事に用いる油圧ジャッキ用治具及びこれを用いた不同沈下した建物の修復工法に関するものである。   The present invention relates to a restoration work for recovering the level level of a building that has been inclined to sink due to liquefaction of soft ground or ground, and relates to a jig for a hydraulic jack used in the restoration work and a It relates to the restoration method.

不同沈下して傾いた建物の水準レベルを回復する修復工事は、不同沈下の原因、地盤状況や施工環境を考慮し、これら条件に適した工法が採用される。現在、主に行われている不同沈下した建物の修復工法として、次のものがある。
１）基礎と土台を切り離し、土台を持ち上げて土台の水準レベルを修正する（例えば特許文献１）。
２）基礎と土台を切り離し、基礎を変更、打ち替えて基礎の水準レベルを修正する。
３）基礎下から基礎ごと持ち上げて基礎の水準レベルを修正する（例えば特許文献２）。 For restoration work that restores the level of buildings that have been inclined due to uneven settlement, the construction method suitable for these conditions will be adopted in consideration of the cause of the uneven settlement, the ground conditions and the construction environment. Currently, the following methods are mainly used to repair buildings that have been subsidized.
1) The foundation and the base are separated, and the base is lifted to correct the level of the base (for example, Patent Document 1).
2) The foundation and the foundation are separated, the foundation is changed, and the foundation level is revised by changing.
3) The foundation level is raised by lifting the foundation from below the foundation (for example, Patent Document 2).

これらの工法は、１）から３）の順に工事が大掛かりとなり、工事期間が長期化し、工事コストが増大する。なお、不同沈下した建物の修復工事の前提として、沈下の原因を明確にし、「現時点で建物の沈下が止まっていること」を確認することが必要条件である。沈下が進行している状況では、地盤の補強工事が必要とされ、地盤補強の工法として、ウレタン樹脂を注入して地盤密度を高める等の最新工法が採られるが、この場合さらに工事期間の長期化、工事コストの増大を招く。   In these methods, the construction becomes large in the order of 1) to 3), the construction period becomes longer, and the construction cost increases. In addition, as a precondition for the restoration work of a building that has sunk indefinitely, it is necessary to clarify the cause of the settlement and confirm that “the settlement of the building has stopped at this moment”. In the situation where subsidence is progressing, ground reinforcement work is required, and the latest construction method such as injecting urethane resin to increase the ground density is adopted as the ground reinforcement work method. And increase construction costs.

特開２００７−２３１７０７号公報JP 2007-231707 A 特開２００７−１８２７４１７号公報JP 2007-1827417 A

比較的工事が大掛かりでない、上記１）基礎と土台を切り離し、土台を持ち上げて土台の水準レベルを修正する工法では、基礎と土台の間に、土台をジャッキアップするための部材を挿入する間隙が無く、基礎上面のコンクリートをハツッて数箇所を切り欠き、基礎と土台の間に間隙を形成している。そして、この間隙に鋼材等を挿通し、基礎を跨いで内側と外側に２基の油圧ジャッキを設置し、油圧ジャッキを同時に操作して土台を持ち上げる作業が行われている。したがって、この工法においても、工事に係る人員や油圧ジャッキ等の工具類の点数を要し、工事コストは安価ではない。   In the construction method in which the construction is relatively large, 1) separating the foundation from the foundation and lifting the foundation to correct the foundation level, there is a gap between the foundation and the foundation for inserting a member for jacking up the foundation. There are no concrete parts on the upper surface of the foundation, and several parts are cut out to form a gap between the foundation and the foundation. Then, a steel material or the like is inserted into the gap, two hydraulic jacks are installed inside and outside across the foundation, and the work is performed by simultaneously operating the hydraulic jacks to lift the foundation. Therefore, this method also requires the number of tools such as personnel and hydraulic jacks for construction, and the construction cost is not low.

この発明は、基礎と土台を切り離し、土台を持ち上げて土台の水準レベルを修正する工法に関し、ジャッキアップを要する土台の要所位置で、１台の油圧ジャッキで土台を持ち上げることができ、その他の工具を不要とし、不同沈下した建物の修復工事を簡単に行える油圧ジャッキ用治具を提供することを目的とするものである。また、この治具を用い、基礎を始めとした建物の構造躯体に損傷を与えることがなく、大掛かりな解体工事も不要で、工事期間の短縮、工事コストの削減が可能な不同沈下した建物の修復工法を提案することを目的とするものである。   The present invention relates to a method for correcting the level level of a foundation by separating the foundation and the foundation and lifting the foundation, and the foundation can be lifted by one hydraulic jack at a critical position of the foundation requiring jack-up. It is an object of the present invention to provide a hydraulic jack jig that can easily repair a building that has been subsidized without using tools. Also, using this jig, the structure of the building, including the foundation, will not be damaged, and no large-scale dismantling work is required. The purpose is to propose a restoration method.

上記の目的を達成するため、この発明の建物の不同沈下の修復工事に用いる油圧ジャッキ用治具は、不同沈下した建物の土台２をジャッキアップするために、油圧ジャッキ２０のシリンダー２１に取り付ける金属製治具であって、シリンダー２１に載置する平盤状の基台１１を形成し、基台１１の裏面に、シリンダー２１の頭部２１ａが嵌入される適宜深さの筒状部１２を設け、基台１１の後端に支持壁１３を立設し、支持壁１３に、土台２に削成した横穴３に先端を嵌入する金属棒１８が嵌挿される通孔１４を、その外周下端が基台１１の表面の水準レベルと同じとなる高さ位置に形成する。そして、所定の高さ持ち上げられた土台２と、基礎１との間の間隙に差し込む平盤状の差込盤１５を、支持壁１３から後方へ延びた状態に設けて構成するものである。   In order to achieve the above object, a jig for a hydraulic jack used for repair work for uneven settlement of a building according to the present invention is a metal attached to a cylinder 21 of a hydraulic jack 20 in order to jack up the foundation 2 of the building that has been unevenly settled. A flat jig-like base 11 to be placed on the cylinder 21 is formed, and a cylindrical portion 12 having an appropriate depth into which the head 21 a of the cylinder 21 is fitted is formed on the back surface of the base 11. A support wall 13 is erected at the rear end of the base 11, and a through hole 14 is inserted into the support wall 13 into which a metal rod 18 is inserted into the horizontal hole 3 cut into the base 2. Is formed at a height position that is the same as the level level of the surface of the base 11. Then, a flat plate-like insertion board 15 inserted into the gap between the base 2 raised to a predetermined height and the foundation 1 is provided in a state extending rearward from the support wall 13.

また、この発明の油圧ジャッキ用治具は、上記の構成において、筒状部１２の内側に、頭部２１ａの外径に適合した内径の管体で形成したアタッチメント１７を設けるものである。   Further, the hydraulic jack jig of the present invention is provided with the attachment 17 formed of a tubular body having an inner diameter suitable for the outer diameter of the head portion 21a inside the cylindrical portion 12 in the above configuration.

また、この発明の不同沈下した建物の修復工法は、上記の油圧ジャッキ用治具１０を用いる修復工法であって、ジャッキアップを要する土台２の要所位置に横穴３を削成し、ジャッキアップ用油圧ジャッキ２０を基礎１の側壁に沿って要所位置に設置し、油圧ジャッキ２０のシリンダー２１に、頭部２１ａを筒状部１２に嵌入して治具１０を取り付け、通孔１４を横穴３に対向させ、治具１０の後方から通孔１４に嵌挿し、先端を横穴３に嵌入して金属棒１８をセットする。次に、要所位置の油圧ジャッキ２０を同時に操作し、要所位置の水準レベルを確認しながら土台２をジャッキアップし、土台２を所定の高さ持ち上げ、水準レベルを回復した要所位置ではジャッキアップ作業を終了する。そして、さらに土台２のジャッキアップを要する要所位置では、治具１０の向きを反転した状態でシリンダー２１に取り付け、差込盤１５を土台２と基礎１との間の間隙に差し込み、油圧ジャッキ２０を再び操作して土台２をジャッキアップし、土台２が水準レベルを回復する高さ位置まで持ち上げてジャッキアップ作業を終了する。以上の手順で土台２の水準レベルを回復するものである。   In addition, the repair method for a non-settled building according to the present invention is a repair method using the above-mentioned hydraulic jack jig 10, and the side holes 3 are formed at the important positions of the base 2 requiring jack-up, and the jack-up is performed. The hydraulic jack 20 is installed at a key position along the side wall of the foundation 1, the jig 21 is attached to the cylinder 21 of the hydraulic jack 20 by fitting the head 21 a into the cylindrical portion 12, and the through hole 14 is formed as a horizontal hole. 3 is inserted into the through hole 14 from the rear side of the jig 10, the tip is inserted into the horizontal hole 3, and the metal rod 18 is set. Next, the hydraulic jack 20 at the key position is operated at the same time, the base 2 is jacked up while checking the level level at the key position, the base 2 is lifted by a predetermined height, and the key level is restored at the key position. Finish jack-up work. Further, at a critical position where the jack up of the base 2 is required, the jig 10 is mounted on the cylinder 21 with the direction of the jig 10 reversed, and the insertion board 15 is inserted into the gap between the base 2 and the foundation 1. 20 is again operated to jack up the base 2, and the base 2 is lifted to a height position where the level 2 recovers the level, thereby completing the jacking-up operation. The level of the base 2 is restored by the above procedure.

この発明の油圧ジャッキ用治具は、ジャッキアップを要する土台２の要所位置で、１台の油圧ジャッキ２０で土台２を持ち上げることができ、その他の工具を不要とし、不同沈下した建物の修復工事を簡単に行うことができる。治具１０は、小型で安価に製作されるとともに、シリンダー２１の頭部２１ａを筒状部１２に嵌入し、金属棒１８を通孔１４に嵌挿するだけで、そのセッティング作業も容易であり、取り扱いや作業性に極めて優れるものである。   The jig for a hydraulic jack according to the present invention can lift the base 2 with a single hydraulic jack 20 at a position of the base 2 that needs to be jacked up. Construction can be done easily. The jig 10 is small and inexpensively manufactured, and the setting work can be easily performed only by inserting the head portion 21a of the cylinder 21 into the cylindrical portion 12 and inserting the metal rod 18 into the through hole 14. It is extremely excellent in handling and workability.

また、筒状部１２の内側に、頭部２１ａの外径に適合した内径の管体で形成したアタッチメント１７を設けて治具１０を形成すれば、治具１０の筒状部１２にシリンダー２１の頭部２１ａを可能な限り遊びが無く嵌入することができ、取付精度の向上が図られる。その結果、油圧ジャッキ２０の揚力を効率良く土台２に伝え、ジャッキアップ作業を確実且つ正確に行うことが可能となる。   Further, if the jig 10 is formed by providing an attachment 17 formed of a tubular body having an inner diameter suitable for the outer diameter of the head portion 21 a inside the cylindrical portion 12, the cylinder 21 is attached to the cylindrical portion 12 of the jig 10. The head 21a can be inserted with as little play as possible, and the mounting accuracy can be improved. As a result, the lifting force of the hydraulic jack 20 can be efficiently transmitted to the base 2 and the jack-up operation can be performed reliably and accurately.

また、治具１０を用いたこの発明の不同沈下した建物の修復工法は、要所位置の土台２に横穴３を削成するだけで、基礎を始めとした建物の構造躯体に損傷を与えることがなく、大掛かりな解体工事も不要で、騒音の発生、粉塵の飛散もない。さらに、金属棒１８をセットした第１段階のジャッキアップ作業と、差込盤１５を土台２と基礎１との間の間隙に差し込んだ第２段階のジャッキアップ作業により、各要所位置の土台２が水準レベルを回復する高さ位置まで確実且つ容易にジャッキアップすることができ、従来の修復工法に比べて大幅な工事期間の短縮、工事コストの削減が可能である。   In addition, the method of repairing an unevenly subsidized building of the present invention using the jig 10 can damage the structural frame of the building including the foundation simply by cutting the horizontal hole 3 in the base 2 at the important position. No large dismantling work is required, no noise is generated, and no dust is scattered. Further, the first stage jackup work in which the metal rod 18 is set and the second stage jackup work in which the insertion board 15 is inserted into the gap between the base 2 and the foundation 1, the foundations at the respective important positions are obtained. 2 can be reliably and easily jacked up to the height where the level is restored, and the construction period can be greatly shortened and the construction cost can be reduced as compared with the conventional restoration method.

油圧ジャッキ用治具の実施例で、（Ａ）左側面図、（Ｂ）正面図、（Ｃ）右側面図。In the Example of the jig | tool for hydraulic jacks, (A) Left side view, (B) Front view, (C) Right side view. （Ａ）平面図、（Ｂ）底面図。(A) Top view, (B) Bottom view. 図１（Ａ）中、Ａ−Ａ線断面図。AA line sectional view in Drawing 1 (A). ジャッキアップ用油圧ジャッキ２０に治具１０を取り付けた状態を示す断面図。Sectional drawing which shows the state which attached the jig | tool 10 to the hydraulic jack 20 for jackup. 金属棒の（Ａ）正面図、（Ｂ）右側面図。(A) Front view of metal bar, (B) Right side view. 要所位置の土台に横穴を削成した状態の説明図。Explanatory drawing of the state which cut the side hole in the foundation of a key position. ジャッキアップ用油圧ジャッキを要所位置に設置した状態の説明図。Explanatory drawing of the state which installed the jack-up hydraulic jack in the key position. 油圧ジャッキに治具を取り付けた状態の説明図。Explanatory drawing of the state which attached the jig to the hydraulic jack. 金属棒１８をセットした状態の説明図。Explanatory drawing of the state which set the metal bar. 土台が所定の高さ持ち上げられた状態の説明図。Explanatory drawing of the state where the foundation was lifted up to a predetermined height. （Ａ）パッキン材てで土台を仮受けした状態、（Ｂ）治具を取り外した状態の説明図。(A) Explanatory drawing of the state which received the base temporarily with the packing material, (B) The state which removed the jig | tool. 治具の向きを反転した状態で油圧ジャッキに取り付けた状態の説明図。Explanatory drawing of the state attached to the hydraulic jack in the state which reversed the direction of the jig | tool. さらに土台が持ち上げられた状態の説明図。Furthermore, explanatory drawing of the state where the foundation was lifted. パッキン材で土台を仮受けし、油圧ジャッキを片付けてジャッキアップ作業を終了した状態の説明図。Explanatory drawing of the state which temporarily received the foundation with the packing material, cleaned up the hydraulic jack, and finished the jack-up work. 土台と基礎との間の間隙に補修モルタルを充填し、建物の修復工事を完了した状態の説明図。Explanatory drawing of the state where repair mortar was filled in the gap between the foundation and the foundation, and the restoration work for the building was completed. ジャッキアップする土台の要所位置を例示する説明図。Explanatory drawing which illustrates the important point position of the foundation which jacks up. 筒状部の内側にアタッチメントを設けた治具の断面図。Sectional drawing of the jig | tool which provided the attachment inside the cylindrical part. アタッチメントの組み立てを示す断面図。Sectional drawing which shows the assembly of an attachment. 油圧ジャッキ用治具の他の実施例で、（Ａ）正面図、（Ｂ）平面図。In other Example of the jig | tool for hydraulic jacks, (A) Front view, (B) Plan view.

以下にこの発明の実施形態について、図面に基づいて具体的に説明する。
図１から３に、この発明の油圧ジャッキ用治具の実施例を示す。治具１０は強度と剛性を備えた金属製で、不同沈下した建物の土台２をジャッキアップするために、油圧ジャッキ２０のシリンダー２１に取り付け、建物の水準レベルを回復する修復工事に供するものである。治具１０は図に示す形状に形成され、シリンダー２１に載置する矩形平盤状の基台１１が形成され、基台１１の裏面に、シリンダー２１の頭部２１ａが嵌入される適宜深さの筒状部１２が設けられている。シリンダー２１の頭部２１ａの挿入が容易となるように、筒状部１２の内周面下端には面取り面１２ａが形成されている。 Embodiments of the present invention will be specifically described below with reference to the drawings.
1 to 3 show an embodiment of a hydraulic jack jig according to the present invention. The jig 10 is made of metal having strength and rigidity, and is attached to the cylinder 21 of the hydraulic jack 20 to jack up the base 2 of the building that has been sunk, and used for restoration work to restore the standard level of the building. is there. The jig 10 is formed in the shape shown in the figure, a rectangular flat base 11 to be placed on the cylinder 21 is formed, and an appropriate depth at which the head 21 a of the cylinder 21 is fitted on the back surface of the base 11. The cylindrical part 12 is provided. A chamfered surface 12a is formed at the lower end of the inner peripheral surface of the cylindrical portion 12 so that the head 21a of the cylinder 21 can be easily inserted.

基台１１の後端に支持壁１３が立設され、支持壁１３の下半分は、筒状部１２の外周面後端が接している。支持壁１３の上半分に、土台２のジャッキアップ作業に用いる金属棒１８が嵌挿される通孔１４が、その外周下端が基台１１の表面の水準レベルと同じとなる高さ位置に形成されている。   A support wall 13 is erected at the rear end of the base 11, and the lower half of the support wall 13 is in contact with the rear end of the outer peripheral surface of the cylindrical portion 12. A through hole 14 into which a metal rod 18 used for jacking up the base 2 is fitted is formed in the upper half of the support wall 13 at a height position where the outer peripheral lower end is the same as the level level of the surface of the base 11. ing.

支持壁１３から後方へ延びた状態に矩形平盤状の差込盤１５が設けられ、差込盤１５は、後述するように、所定の高さ持ち上げられた土台２と、基礎１との間の間隙に差し込まれる。基台１１の裏面前端には、筒状部１２の外周面前端が接する補強壁１６が設けられ、筒状部１２が支持壁１３と補強壁１６に前後で挟持され、ジャッキアップ作業時の荷重や負荷に抗するように剛性向上が図られている。   A rectangular flat plate-like insertion board 15 is provided in a state extending rearward from the support wall 13, and the insertion board 15 is interposed between the base 2 raised to a predetermined height and the foundation 1 as will be described later. Is inserted into the gap. A reinforcing wall 16 is provided at the front end of the back surface of the base 11 so that the front end of the outer peripheral surface of the cylindrical portion 12 is in contact with the cylindrical portion 12. The rigidity has been improved to withstand the load.

図４に、ジャッキアップ用油圧ジャッキ２０に治具１０を取り付けた状態を示す。図に示すように、治具１０は、筒状部１２の下端開口からシリンダー２１の頭部２１ａを嵌入し、基台１１がシリンダー２１に載置した状態で、上方から被せるようにシリンダー２１に取り付けられる。   FIG. 4 shows a state where the jig 10 is attached to the jack-up hydraulic jack 20. As shown in the drawing, the jig 10 is fitted on the cylinder 21 so that the head 21 a of the cylinder 21 is inserted from the lower end opening of the cylindrical portion 12 and the base 11 is placed on the cylinder 21 so as to be covered from above. It is attached.

図５に、土台２のジャッキアップ作業に用いる金属棒１８の形状を示す。図に示すように、金属棒１８は、先端に向かって３段階に縮径された、先段部１８ａ、中段部１８ｂ、後段部１８ｃから成る長尺棒状に形成され、最大径の後段部１８ｃが通孔１４に嵌挿されるように径が設定されている。   FIG. 5 shows the shape of the metal bar 18 used for jacking up the base 2. As shown in the drawing, the metal rod 18 is formed in a long rod shape including a front step portion 18a, a middle step portion 18b, and a rear step portion 18c, which is reduced in diameter in three steps toward the tip, and the rear step portion 18c having the maximum diameter. The diameter is set so that is inserted into the through hole 14.

この治具１０を用いた不同沈下した建物の修復工事の手順を具体的に説明する。
最初に、図６に示すように、不同沈下して建物が傾斜し、ジャッキアップを要する土台２の位置を定め、この要所位置の土台２の側面から所定の水平深さの横穴３をドリルを用いて削成する。ジャッキアップする土台２のアンカーボルトの位置を目視又はセンサーで確認し、可能であればアンカーボルトを緩め、必要であればアンカーボルトを切断し、土台２と基礎１を切り離す。 The procedure for repairing a building that has been sunk using the jig 10 will be described in detail.
First, as shown in FIG. 6, the building is inclined and the building is inclined, the position of the base 2 that requires jack-up is determined, and a horizontal hole 3 of a predetermined horizontal depth is drilled from the side surface of the base 2 at this important position. Use to sharpen. The position of the anchor bolt of the base 2 to be jacked up is confirmed visually or with a sensor, the anchor bolt is loosened if possible, the anchor bolt is cut if necessary, and the base 2 and the foundation 1 are separated.

次に、図７に示すように、ジャッキアップ用油圧ジャッキ２０を基礎１の側壁に沿って要所位置に設置する。油圧ジャッキ２０は、高さ調整台２３、耐圧面盤２４に載置し、基礎１の側壁との間に当て木２５を設け、ジャッキアップ作業時の荷重や負荷に対し、沈下，転倒、揺動することがないように安定した状態に設置する。この油圧ジャッキ２０のシリンダー２１に、図４で示したように治具１０を取り付け、通孔１４が横穴３に対向するように方向と高さ位置を調整する。   Next, as shown in FIG. 7, the jack-up hydraulic jack 20 is installed along the side wall of the foundation 1 at a key position. The hydraulic jack 20 is placed on the height adjusting table 23 and the pressure-resistant face plate 24, and a batten 25 is provided between the side wall of the foundation 1 and subsidence, overturning, and shaking with respect to the load and load during the jackup work. Install in a stable condition so that it does not move. As shown in FIG. 4, the jig 10 is attached to the cylinder 21 of the hydraulic jack 20, and the direction and height position are adjusted so that the through hole 14 faces the horizontal hole 3.

次に、金属棒１８をセットする。図８に示すように、治具１０の後方から金属棒１８を通孔１４に嵌挿し、ハンマー等で打設して横穴３に先端を嵌入する。図９に示すように、金属棒１８は、先段部１８ａが横穴３に埋設され、中段部１８ｂの先端が横穴３に嵌合し、後段部１８ｃが通孔１４に嵌合し、遊びが無いように剛性を保って治具１０にセットされる。   Next, the metal rod 18 is set. As shown in FIG. 8, the metal rod 18 is inserted into the through hole 14 from the rear of the jig 10, and the tip is inserted into the horizontal hole 3 by placing with a hammer or the like. As shown in FIG. 9, in the metal rod 18, the front step portion 18a is embedded in the horizontal hole 3, the front end of the middle step portion 18b is fitted in the horizontal hole 3, the rear step portion 18c is fitted in the through hole 14, and play is prevented. It is set on the jig 10 while maintaining rigidity so as not to exist.

次に、要所位置の油圧ジャッキ２０を同時に操作し、土台２をジャッキアップする。ここで、要所位置の水準レベルの数値を確認しながら、建物壁面等に亀裂が生じないように慎重に油圧ジャッキ２０を操作し、均等且つ正確に土台２をジャッキアップする。図１０に、土台２が所定の高さ持ち上げられた状態を示す。   Next, the hydraulic jack 20 at a key position is operated simultaneously to jack up the base 2. Here, the hydraulic jack 20 is carefully operated so as not to cause a crack in the wall surface of the building while confirming the numerical value of the level of the important point position, and the base 2 is jacked up evenly and accurately. FIG. 10 shows a state in which the base 2 is lifted by a predetermined height.

次に、図１１（Ａ）に示すように、土台２と基礎１との間にパッキン材４を挿入して土台２を仮受けし、金属棒１８を横穴３から脱抜し、図１１（Ｂ）に示すように、治具１０をシリンダー２１から取り外す。パッキン材４は、樹脂製、金属製、角材、合板等の任意の素材で形成される。このジャッキアップ作業で、水準レベルを回復した要所位置では土台２を本受けし、仕上げ作業へ移行する。   Next, as shown in FIG. 11 (A), the packing material 4 is inserted between the base 2 and the foundation 1 to temporarily receive the base 2, and the metal rod 18 is removed from the horizontal hole 3, and FIG. As shown in B), the jig 10 is removed from the cylinder 21. The packing material 4 is formed of an arbitrary material such as resin, metal, square material, plywood and the like. In this jack-up operation, the base 2 is received at the key position where the level has been restored, and the process proceeds to the finishing operation.

さらに土台２のジャッキアップを要する要所位置では、図１２に示すように、治具１０の向きを反転した状態でシリンダー２１に取り付け、土台２と基礎１との間の間隙に差込盤１５を差し込み、土台２の底面に差込盤１５が当接した状態にセットする。そして、油圧ジャッキ２０を再び操作し、土台２をジャッキアップする。ここで、差込盤１５は土台２の底面に広い面積が当接しているので、油圧ジャッキ２０の揚力が確実に作用し、土台２がさらに持ち上げられる。図１３に、土台２が水準レベルを回復する高さ位置まで持ち上げられた状態を示す。なお、このジャッキアップ作業で、土台２が転動することがないように、金属棒１８を通孔１４に嵌挿して横穴３に先端を嵌入し、金属棒１８を同時にセットしてもよい。   Further, at a critical position where the base 2 needs to be jacked up, as shown in FIG. 12, the jig 10 is attached to the cylinder 21 with the direction reversed, and the insertion board 15 is inserted into the gap between the base 2 and the foundation 1. And the insertion board 15 is set in a state where it abuts on the bottom surface of the base 2. Then, the hydraulic jack 20 is operated again to jack up the base 2. Here, since the insertion board 15 has a large area in contact with the bottom surface of the base 2, the lifting force of the hydraulic jack 20 acts reliably, and the base 2 is further lifted. FIG. 13 shows a state in which the base 2 is lifted to a height position at which the level is restored. In this jack-up operation, the metal rod 18 may be set simultaneously by inserting the metal rod 18 into the through hole 14 and inserting the tip into the horizontal hole 3 so that the base 2 does not roll.

次に、図１４に示すように、土台２と基礎１との間にパッキン材４を挿入して土台２を仮受けし、油圧ジャッキ２０を取り除き、治具１０をシリンダー２１から取り外し、ジャッキアップ作業を終了する。このようにして水準レベルを回復した土台２を本受けし、緩めたアンカーボルトは締結し、アンカーボルトを切断した箇所には新たに接続金具を付設するなどし、土台２を基礎１に堅固に固定する。最後に、図１５に示すように、土台２と基礎１との間の間隙に補修モルタル５を充填し、コテ仕上げして不同沈下した建物の修復工事を完了する。   Next, as shown in FIG. 14, the packing material 4 is inserted between the base 2 and the foundation 1 to temporarily receive the base 2, the hydraulic jack 20 is removed, the jig 10 is removed from the cylinder 21, and jack-up is performed. Finish the work. In this way, the base 2 that has recovered the standard level is received, the anchor bolts that have been loosened are tightened, and a connection fitting is newly attached to the place where the anchor bolts have been cut. Fix it. Finally, as shown in FIG. 15, the repair mortar 5 is filled in the gap between the base 2 and the foundation 1, and the repair work of the building that has been sunk and finished sinking is completed.

図１６に、土台２のジャッキアップ作業において油圧ジャッキ２０を設置する要所位置を例示する。図に示すように、建物の柱６の下位置Ａ、Ｂ、Ｃに油圧ジャッキ２０を設置することで、図中矢印で示すように、油圧ジャッキ２０の揚力が建物に確実に伝わり、各要所位置で均等に油圧ジャッキ２０を操作し、軽い揚力で土台２のジャッキアップ作業を行うことができる。   FIG. 16 exemplifies key positions where the hydraulic jack 20 is installed in the jack-up operation of the base 2. As shown in the figure, by installing the hydraulic jacks 20 at the lower positions A, B, and C of the pillar 6 of the building, the lift of the hydraulic jacks 20 is reliably transmitted to the building as shown by the arrows in the figure. The hydraulic jack 20 can be evenly operated at a certain position, and the base 2 can be jacked up with light lift.

図１７に、筒状部１２の内側にアタッチメント１７を設けた治具１０を示す。油圧ジャッキ２０の揚力を効率良く土台２に伝え、ジャッキアップ作業を確実且つ正確に行うためには、治具１０の筒状部１２にシリンダー２１の頭部２１ａを可能な限り遊びが無く嵌入することが求められる。アタッチメント１７は、頭部２１ａの外径に適合した内径の管体で形成されているので、取付制度の向上が図られる。図１８に示すように、筒状部１２の下端開口から筒状部１２に挿入され、シリンダー２１の頭部２１ａをアタッチメント１７に嵌入し、治具１０がシリンダー２１に取り付けられる。シリンダー２１の頭部２１ａの挿入が容易となるように、アタッチメント１７の内周面下端には面取り面１７ａが形成されている。   FIG. 17 shows the jig 10 in which the attachment 17 is provided inside the cylindrical portion 12. In order to efficiently transmit the lifting force of the hydraulic jack 20 to the base 2 and perform the jack-up operation reliably and accurately, the head portion 21a of the cylinder 21 is inserted into the cylindrical portion 12 of the jig 10 with as little play as possible. Is required. Since the attachment 17 is formed of a tubular body having an inner diameter suitable for the outer diameter of the head 21a, the attachment system can be improved. As shown in FIG. 18, the cylindrical portion 12 is inserted into the cylindrical portion 12 from the lower end opening, the head 21 a of the cylinder 21 is fitted into the attachment 17, and the jig 10 is attached to the cylinder 21. A chamfered surface 17 a is formed at the lower end of the inner peripheral surface of the attachment 17 so that the head 21 a of the cylinder 21 can be easily inserted.

図１９に、油圧ジャッキ用治具の他の実施例を示す。この治具１０は、差込盤１５の幅Ｌ２を基台１１の幅Ｌ１の略２倍の値とし、差込盤１５を幅広に形成したものである。このように形成したので、差込盤１５は土台２の底面により広い面積が当接し、油圧ジャッキ２０の揚力の作用を確実にすることができる。また、土台２が入り隅の場合、隅部には柱が立設されているが、幅広の差込盤１５はこの柱位置の土台２の底面に差し込まれ、入り隅の土台２も容易にジャッキアップすることができる。   FIG. 19 shows another embodiment of the hydraulic jack jig. This jig 10 is formed such that the width L2 of the insertion board 15 is approximately twice the value of the width L1 of the base 11, and the insertion board 15 is formed wide. Since it formed in this way, the insertion board 15 can contact | abut a large area with the bottom face of the base 2, and can ensure the effect | action of the lift of the hydraulic jack 20. FIG. In addition, when the base 2 is a corner, a pillar is erected at the corner. However, the wide insertion board 15 is inserted into the bottom surface of the base 2 at the position of the pillar, and the base 2 at the corner is easily formed. Can be jacked up.

１ 基礎
２ 土台
３ 横穴
１０ 治具
１１ 基台
１２ 筒状部
１３ 支持壁
１４ 通孔
１５ 差込盤
１７ アタッチメント
１８ 金属棒
２０ 油圧ジャッキ
２１ シリンダー
２１ａ 頭部 DESCRIPTION OF SYMBOLS 1 Foundation 2 Base 3 Horizontal hole 10 Jig 11 Base 12 Cylindrical part 13 Support wall 14 Through-hole 15 Insertion board 17 Attachment 18 Metal rod 20 Hydraulic jack 21 Cylinder 21a Head

Claims (3)

不同沈下した建物の土台２をジャッキアップするために、油圧ジャッキ２０のシリンダー２１に取り付ける金属製治具であって、
シリンダー２１に載置する平盤状の基台１１を形成し、基台１１の裏面に、シリンダー２１の頭部２１ａが嵌入される適宜深さの筒状部１２を設け、基台１１の後端に支持壁１３を立設し、支持壁１３に、土台２に削成した横穴３に先端を嵌入する金属棒１８が嵌挿される通孔１４を、その外周下端が基台１１の表面の水準レベルと同じとなる高さ位置に形成し、
所定の高さ持ち上げられた土台２と、基礎１との間の間隙に差し込む平盤状の差込盤１５を、支持壁１３から後方へ延びた状態に設けて構成した、建物の不同沈下の修復工事に用いる油圧ジャッキ用治具。 A metal jig that is attached to the cylinder 21 of the hydraulic jack 20 in order to jack up the foundation 2 of the building that has been sunk.
A flat plate-like base 11 to be placed on the cylinder 21 is formed, and a cylindrical portion 12 having an appropriate depth into which the head 21 a of the cylinder 21 is fitted is provided on the back surface of the base 11. A support wall 13 is erected at the end, a through hole 14 into which a metal rod 18 is inserted into the horizontal hole 3 cut into the base 2 is inserted into the support wall 13, and the lower end of the outer periphery is the surface of the base 11. Formed at the same height level as the standard level,
A flat board-like insertion board 15 inserted into the gap between the base 2 raised to a predetermined height and the foundation 1 is provided so as to extend rearward from the support wall 13. Hydraulic jack jig used for restoration work. 筒状部１２の内側に、頭部２１ａの外径に適合した内径の管体で形成したアタッチメント１７を設けた、請求項１に記載の建物の不同沈下の修復工事に用いる油圧ジャッキ用治具。   The jig for hydraulic jacks used for repair work for the uneven settlement of a building according to claim 1, wherein an attachment 17 formed of a tubular body having an inner diameter adapted to the outer diameter of the head portion 21 a is provided inside the tubular portion 12. . 請求項１又は２に記載の油圧ジャッキ用治具１０を用いる不同沈下した建物の修復工法であって、
ジャッキアップを要する土台２の要所位置に横穴３を削成し、ジャッキアップ用油圧ジャッキ２０を基礎１の側壁に沿って要所位置に設置し、油圧ジャッキ２０のシリンダー２１に、頭部２１ａを筒状部１２に嵌入して治具１０を取り付け、通孔１４を横穴３に対向させ、治具１０の後方から通孔１４に嵌挿し、先端を横穴３に嵌入して金属棒１８をセットする。
次に、要所位置の油圧ジャッキ２０を同時に操作し、要所位置の水準レベルを確認しながら土台２をジャッキアップし、土台２を所定の高さ持ち上げ、水準レベルを回復した要所位置ではジャッキアップ作業を終了する。
さらに土台２のジャッキアップを要する要所位置では、治具１０の向きを反転した状態でシリンダー２１に取り付け、差込盤１５を土台２と基礎１との間の間隙に差し込み、油圧ジャッキ２０を再び操作して土台２をジャッキアップし、土台２が水準レベルを回復する高さ位置まで持ち上げてジャッキアップ作業を終了する。
以上の手順で土台２の水準レベルを回復する不同沈下した建物の修復工法。 A method of repairing a non-sunk building using the hydraulic jack jig 10 according to claim 1,
The horizontal hole 3 is cut at a key position of the base 2 that requires jack-up, and a jack-up hydraulic jack 20 is installed at a key position along the side wall of the foundation 1, and the head 21 a is attached to the cylinder 21 of the hydraulic jack 20. Is inserted into the cylindrical portion 12 and the jig 10 is attached. The through hole 14 is opposed to the horizontal hole 3 and is inserted into the through hole 14 from the rear of the jig 10, and the tip is inserted into the horizontal hole 3 to attach the metal rod 18. set.
Next, the hydraulic jack 20 at the key position is operated at the same time, the base 2 is jacked up while checking the level level at the key position, the base 2 is lifted by a predetermined height, and the key level is restored at the key position. Finish jack-up work.
Further, at the important position where the base 2 needs to be jacked up, it is attached to the cylinder 21 with the direction of the jig 10 reversed, the insertion board 15 is inserted into the gap between the base 2 and the foundation 1, and the hydraulic jack 20 is inserted. By operating again, the base 2 is jacked up, and the base 2 is lifted to a height position where the level 2 recovers the level, and the jackup work is finished.
This is a restoration method for a non-sinked building that restores the standard level of the foundation 2.
JP2012164226A 2012-07-24 2012-07-24 Hydraulic jack jig used for restoration work for uneven settlement of buildings and repair method for unevenly settled buildings using this jig Expired - Fee Related JP5540044B2 (en)

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