JP2007120271A

JP2007120271A - Base isolation retrofit construction method

Info

Publication number: JP2007120271A
Application number: JP2005337744A
Authority: JP
Inventors: Kenjiro Ogata; 賢次郎緒方
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-10-24
Filing date: 2005-10-24
Publication date: 2007-05-17

Abstract

<P>PROBLEM TO BE SOLVED: To contribute to a house industry by increasing a demand for remodeling work of an existing house by the synergistic effect of constructing this method by solving " an aseismatic method of an existing nonseismic house " of the most preferential problem in " Central Disaster Prevention Council " of a Cabinet Office of Seismic Great Nation of Japan by a base isolation retrofit construction method. <P>SOLUTION: A conical part 2, a defective spherical recess and a stopper 4 are arranged on a plate, and a pan type board lower bearing 1b for a base isolation device processed in a pan type board is arranged in an upper part of an existing foundation 6, and an additionally driving foundation 7 is arranged in its lower part, and a steel ball 8 is placed on this foundation, and a pan type board upper bearing 1a for the base isolation device rotated by 180 degrees is arranged on its ball, and a bearing 9 for a sill is fixed to this bearing. A fixing insert 15 of an anchor bolt 16 of a cat 13 provided with a through-hole for fixing the lower bearing 1b to the existing foundation by a bolt 10 and a nut 11 is also arranged, and a rib plate 18 of the cat 13 provided with the through-hole for fixing the bearing 9 for the sill to an existing sill 14 is arranged on the upper bearing 1a, and a floor slab for sticking a rigid floor is formed on the existing sill by structural plywood 17. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は戸建住宅等の建築物に設置する免震装置付住宅に関するものである。 The present invention relates to a house with a seismic isolation device installed in a building such as a detached house.

地震大国日本の免震装置付住宅は、兵庫県南部地震以降に大手住宅メーカーやゼネコン等で新築時に設置する免震装置付住宅を開発して販売され始めたが、免震装置を一番必要としている既設木造家屋２，４５０万戸の内、非耐震既設木造住宅１，１１５万戸は、耐力壁と柱や梁等を、金物で補強する付け刃の耐力壁補修工事または、立て替えを余儀なくされている。 Earthquake-powered homes with seismic isolation devices in Japan began to be developed and sold by major housing manufacturers and general contractors after the Hyogoken-Nanbu Earthquake. Of the 24.5 million existing wooden houses, 111.51 million non-seismic existing wooden houses have to be repaired or replaced with bearing walls for reinforcing blades that reinforce bearing walls and columns and beams with hardware. Has been.

わが国は大地震国にも関わらず既設住宅用の免震装置の開発は、開発が難しく経済的に採算が合わないために、戸建住宅用の免震装置と免震レトロフィット工法の開発が進んでいないのが現状で安価な既設用免震装置の開発が急がれている。 Despite Japan's major earthquake countries, the development of seismic isolation devices for existing houses is difficult and economically unprofitable, so the development of seismic isolation devices for detached houses and seismic isolation retrofit methods The current situation is not progressing, and there is an urgent need to develop an inexpensive existing seismic isolation device.

現在既設戸建住宅に免震装置を設置するには、高層建築と同じ工法で、１既設住宅の基礎から土台を切り離し２既設住宅をジャッキアップし３新たに既設住宅の下部に、免震装置用の基礎を設置して、これに４免震装置をセットし、この上に５構台を設け、これにジャッキアップした既設住宅の土台を、構台に固定する方法がある。 In order to install seismic isolation devices in existing detached houses, the same construction method as for high-rise buildings is used. 1 The foundation is separated from the foundation of existing homes. 2 The existing homes are jacked up. There is a method of installing a foundation for the above, setting 4 seismic isolation devices on it, providing 5 bases on it, and fixing the base of the existing house jacked up to this base.

小規模の建築用免震装置は１９２４年特許となった鬼頭健三郎氏の皿型盤と球体による建築物耐震装置が有り今日でも小規模の建築用免震装置にはこれを応用した免震装置が多数使用されている。 The small-scale building seismic isolation device is the 1924 patented Kenzaburo Kito's plate-type disk and the building's seismic seismic device. Many are used.

戸建住宅用免震装置は皿型盤と球体や、ボールベアリングと油圧ダンパーを組み合わせた転がし工法と、プレート等同士を滑らす工法の装置が主流である。 The mainstream of seismic isolation devices for detached houses is a rolling method combining a plate-shaped board and a sphere, a ball bearing and a hydraulic damper, and a method of sliding a plate or the like.

発明が解決しようと課題Problems to be solved by the invention

既設住宅に従来の皿型盤と球体及びオイルダンパーによる免震装置等を設置する工法は住宅の基礎と土台を切り離なさなければならない The conventional method of installing seismic isolation devices such as a plate and a sphere and an oil damper in an existing house must separate the foundation and foundation of the house.

土台を切り離した既設住宅を免新装置や構台を設置できる高さまでジャッキ等によりジャッキアップしなければならない It is necessary to jack up the existing house from which the foundation has been separated to a height that allows the installation of the exemption equipment and gantry.

免震装置用の基礎を設けなければならないMust provide a foundation for seismic isolation devices

基礎の上に、皿型盤支承と球体による免震装置を設置するOn top of the foundation, set up a plate-shaped plate support and a sphere-based seismic isolation device

免震装置の上に構台を設けなければならないA gantry must be installed on the seismic isolation device

構台に既設住宅の土台を固定するためジャッキダウンしなければならないMust be jacked down to secure the foundation of the existing house to the gantry

構台と既設住宅の土台を接続金物等で固定しなければならないThe frame and the foundation of the existing house must be fixed with connecting hardware

既設住宅の基礎と土台間を外装材等でふさがなければならないThe foundation and foundation of the existing house must be covered with exterior materials

台風などの揺れ止め装置が要るNeed anti-sway device such as typhoon

設置工事の工期が長く施工期間中は１階部分等の家具等は移転させなければならないし施主も仮住しなければならないThe installation work period is long and the furniture on the first floor etc. must be moved during the construction period, and the owner must also reside temporarily

上下皿型盤と球体による免震装置とオイルダンパー及び風による揺れ止め装置等の、大掛かりな装置になり装置費や設置費用も高価だしメンテナスなどの問題があるLarge equipment such as seismic isolation devices with upper and lower plate molds and spheres, oil dampers, and anti-sway devices with wind, etc., equipment costs and installation costs are high, and there are problems such as maintenance.

課題を解決するための手段Means for solving the problem

以上のような課題を解決するためにこの発明では，施工箇所の既設基礎上端を、免震装置の取り付け寸法及び可動分、をカッティングしておく。（図５参照）In order to solve the problems as described above, in the present invention, the upper end of the existing foundation of the construction site is cut with the mounting dimensions and the movable portion of the seismic isolation device. (See Figure 5)

既設基礎にプレート製皿盤型下部支承取付け位置に、固定用のボルト穴を設ける。Bolt holes for fixing are provided on the existing foundation at the position where the plate-made platen lower support is attached.

既設住宅の土台を、Ｌ型鋼土台支承で補強しプレート製上部支承を固定する。（大引は集成材等で補強して、土台と大引き上に構造用合板を貼り剛床にする）The base of the existing house is reinforced with L-shaped steel base support, and the upper plate support is fixed. (Ohiki is reinforced with laminated wood, and a structural plywood is put on the base and the hauling to make it a rigid floor.)

皿型盤支承施工箇所の既設基礎上端に、レベルモルタルを敷く。Place level mortar on the upper end of the existing foundation at the place where the plate-shaped plate is supported.

既設基礎のレベルモルタルの上端に、構球をセットした、皿型盤下部支承を挿着して、既設基礎の固定用ボルト穴に、ボルトを挿入して、ナットでプレート製皿型盤支承を固定する。Attach the bottom support of the plate-type board with the ball structure set to the upper end of the level mortar of the existing foundation, insert the bolt into the fixing bolt hole of the existing foundation, and attach the plate-type dish support with the nut. Fix it.

皿型盤下部支承の下部に、型枠を組み立て、コンクリートを打設する。Assemble the formwork and place concrete in the lower part of the bottom support of the plate mold.

施工箇所のコンクリートが強度発現後、既設住宅全ての既設基礎上端の、既設敷きモルタルを撤去すする。After the concrete at the construction site develops strength, remove the existing mortar from the top of the existing foundation of all existing houses.

既設住宅全ての既設基礎上端と、土台間のアンカーボルトを切断する。Cut off the anchor bolts between the foundation tops and the foundations of all existing houses.

既設住宅の、皿型盤支承を設けていない柱の土台用支承下端と、型基礎の隙間にスライドプレートが接する様に、既設基礎に固定して、スライドプレートと土台支承が滑るように固定して滑り免震装置工法にする。Fix to the existing foundation so that the slide plate is in contact with the lower end of the base of the pillar that does not have a plate-shaped plate support and the gap between the mold foundation, and fix the slide plate and the base support to slide. To make a slip-isolation device method.

発明の効果The invention's effect

皿型盤支承に、欠球型窪みと、ストッパーを設けているので、ダンパーと風揺れ止め機能が生じダンパーと、風揺装置が不要。Since the dish-shaped board support is provided with a missing ball-shaped depression and a stopper, a damper and a wind-swing prevention function are produced, and a damper and a wind-swing device are not required.

ダンパーと、揺止装置の基礎が不要だし、免震装置用の大掛かりな基礎（べた基礎底盤厚２５ｃｍ以上）も不要。There is no need for dampers and foundations for rocking devices, and large foundations for seismic isolation devices (solid foundation floor thickness of 25 cm or more) are also unnecessary.

既設土台と大引を、構造用合板等で剛床貼りの床版を形成しているので、土台を固定する構台（１８ｃｍ以上のコンクリートスラブ）が不要。Since the existing foundation and the large fork are formed with a rigid slab flooring made of structural plywood, etc., a gantry (concrete slab of 18 cm or more) that fixes the foundation is unnecessary.

免震装置の皿型盤支承は既設基礎上端をカットして、土台の下部に挿入する工法で施工出来るので、既設住宅のジャッキアップが不要。The seismic isolation plate support can be constructed by cutting the top of the existing foundation and inserting it into the bottom of the foundation, eliminating the need for jacking up existing houses.

免震装置は、増し打ち基礎やＬ型鋼土台用支承を、既設基礎や土台に固定する工法だから、大掛かりな基礎や構台が不要で、大掛かりな基礎と構台及びジャッキアップが不要だから、これらの工費と施工、工期が不要。The seismic isolation device is a construction method that fixes the extra foundation and L-shaped steel base support to the existing foundation and foundation, so there is no need for large foundations and foundations, and there is no need for large foundations, foundations and jack-ups. And construction and construction period are unnecessary.

既設住宅のジャッキアップが不要だから、部分施工が出来、ユーザーは仮住まいなしで施工できる。Because there is no need to jack up existing houses, partial construction is possible, and users can work without temporary housing.

仮住いが不要だから、その経費が不要。Because there is no need for temporary housing, the expense is not required.

免震工事が、プレート製皿型盤支承や、Ｌ型鋼土台用支承等の、小規模な工事で済むので、施工が簡単。The seismic isolation work is simple because small-scale work such as plate-type plate support and L-type steel base support is sufficient.

免震工事が、プレート製皿型盤支承や、Ｌ型鋼土台支障等の、小規模な工事で済むので、施工費が安い。Since the seismic isolation work is a small-scale work such as plate-type plate support or L-shaped steel base obstacle, the construction cost is low.

非耐震既設住宅を、耐力壁による補強工事をすることなく、免震住宅に出来る。Non-earthquake-resistant existing houses can be made seismic-isolated houses without reinforcement work with bearing walls.

プレート製皿型盤支承の構造が簡単でプレートのプレス加工と溶接等で製造できるので高度の技術が不要だから安価に製造できる Since the structure of the plate-shaped platen plate support is simple and can be manufactured by pressing and welding the plate, it can be manufactured at low cost because advanced technology is not required.

免震装置を新設住宅建設時に施工すると、新設用免震装置住宅を、低価格で建設出来る。 If a seismic isolation device is installed at the time of construction of a new house, a new seismic isolation device house can be constructed at a low price.

プレートに円錐部２と欠球型窪み３と、ストッパー４を設け皿型盤に加工した免震装置用皿型ばん下部支承１ｂ（図２参照）を既設基礎６の上部に接置して、その下部に増し打ち基礎７を設けて、これに鋼球８を乗せ、その上に、１８０度回転させた免震装置用皿型盤上部支承１ａを設けこれに土台用支承９を固定した、免震レトロフィット工法（図３参照）尚、免震装置用下部支承１ｂをボルト１０ナット１１で既設基礎６に固定する為の貫通孔１２を設けたネコ１３やアンカーボルト１６の固定用インサート１５を設け、免震装置用皿型盤上部支承１ａに土台用Ｌ型鋼支承９を既設土台１４に固定する為の貫通孔１２を設けたネコ１３や、リブプレート１８を設けて、既設土台１４には、構造用合板１７等で剛床貼りの床版形成して置く（図４，５参照）また既設住宅の、皿型盤支承を設けていない、柱の土台用支承下端と基礎の隙間にスライドプレートが接する様に、既設基礎に固定して、スライドプレート土台支承が滑るように固定する（図６参照）。A plate-shaped lower plate support 1b (see FIG. 2) for a seismic isolation device, which is provided with a conical portion 2, a spherical recess 3 and a stopper 4 on a plate and processed into a plate-shaped plate, is placed on the upper portion of the existing foundation 6. An additional foundation 7 is provided at the lower part, a steel ball 8 is placed on the foundation, and a top plate 1a for the seismic isolation device rotated 180 degrees is provided thereon, and the base support 9 is fixed thereto. Seismic isolation retrofit method (see FIG. 3) Note that a cat 13 having a through hole 12 for fixing the base support 1b for the seismic isolation device to the existing foundation 6 with the bolt 10 nut 11 and an insert 15 for fixing the anchor bolt 16 The base plate 14 is provided with a through-hole 12 for fixing the base L-shaped steel support 9 to the existing base 14 and the rib plate 18. Form a rigid slab flooring with a structural plywood 17 etc. (Refer to Figs. 4 and 5) In addition, the slide plate base support is fixed to the existing foundation so that the slide plate is in contact with the gap between the lower end of the pillar base support and the foundation of the existing house that does not have a plate-shaped plate support. Fix to slide (see FIG. 6).

円錐部２と欠球型窪み３及びストッパー４を設け皿型盤に加工した免震装置用支承１（図１，２参照）A base 1 for a seismic isolation device provided with a conical portion 2, a spherical recess 3 and a stopper 4 (see FIGS. 1 and 2).

施工箇所の既設基礎上端を、免震装置の取り付け寸法及び可動分、カッティングしておく。（図５参照）The upper end of the existing foundation at the construction site is cut in accordance with the installation dimensions and movable parts of the seismic isolation device. (See Figure 5)

既設基礎にプレート製皿型盤下部支承取付け位置に、固定用のボルト穴を設ける。Bolt holes for fixing are provided on the existing foundation at the lower plate mounting position of the plate-shaped plate.

既設住宅の土台を、Ｌ型鋼土台支承で補強しプレート製上部支承を固定する。（大引は集成材等で補強して、土台と大引きの上に構造用合板を貼り剛床にする）The base of the existing house is reinforced with L-shaped steel base support, and the upper plate support is fixed. (Ohiki is reinforced with laminated lumber, etc., and a structural plywood is placed on the foundation and hauling to make it a rigid floor)

既設基礎のレベルモルタルの上端に、構球をセットした、皿型盤下部支承を挿着して、既設基礎の固定用ボルト穴に、ボルトを挿入して、ナットでプレート製皿ば型盤支承を固定する。Attach the bottom support of the plate-type board with the ball structure set to the upper end of the level mortar of the existing foundation, insert the bolt into the fixing bolt hole of the existing foundation, and plate the plate-shaped platen base support with the nut To fix.

既設住宅の、皿型盤支承を設けていない、柱の土台用支承下端と基礎の隙間にスライドプレートが接する様に、既設基礎に固定して、スライドプレートと土台支承による滑り免震装置にする。Fix the existing foundation so that the slide plate is in contact with the gap between the bottom of the pillar base support and the foundation, which does not have a plate-shaped plate support, and make it a sliding seismic isolation device using the slide plate and the base support. .

支承の構造が簡単でプレートのプレス加工と溶接等で製造できるので高度の技術が不要だから免震装置が安価に製造できるし既設基礎の上端と土台間の空間に免震装置をボルトナット等で固定し増打ち基礎で既設基礎の補強と土台等の補強で既設非免震住宅を免震レトロフィットに出来る。 Since the structure of the bearing is simple and can be manufactured by pressing and welding plates, etc., advanced technology is not required, so seismic isolation devices can be manufactured at low cost. The existing non-base-isolated house can be made a seismic isolation retrofit by fixing the existing foundation with a fixed base and reinforcing the foundation.

地震大国日本では既設住宅の耐震対策は無策だから既設住宅を耐力壁で補強する事なく現耐震技術の最先端の免震装置付住宅に施工出来、施工費が安価で後期も短くてすむし、リホーム工事との相乗効果も期待でき、また今後建設される全ての非免震住宅をこの工法のマーケットに出来るので、住宅産業への経済効果は大きい。 In earthquake-prone countries in Japan, earthquake resistance measures for existing houses are inadequate, so existing houses can be constructed in the latest seismic isolation equipment with the existing seismic technology without reinforcing them with bearing walls, and the construction costs are low and the latter period is short. A synergistic effect with re-home construction can also be expected, and all non-base-isolated houses constructed in the future can be made into this construction method market, so the economic effect on the housing industry is great.

実施例１の免震装置下部支承の平面図Plan view of seismic isolation device lower support in Example 1 実施例１の免震装置下部支承の断面図Sectional view of the base isolation lower part support of Example 1 実施例２の免震装置上部支承の断面図Sectional view of the seismic isolation device upper bearing of Example 2 実施例２の免震装置の施工断面図Cross section of construction of seismic isolation device of Example 2 実施例２の免震装置の施工立面図Construction elevation of seismic isolation device of Example 2 実施例２の滑り支承装置の施工部透視図Construction part perspective view of the sliding bearing device of Example 2

符号の説明Explanation of symbols

１免震装置の皿型盤支承１０ボルト
１ａプレート製上部皿型盤支承１１ナット
１ｂプレート製下部皿型盤支承１２貫通工
２円錐部１３ネコ
３欠球型窪み１４既設土台
４ストッパー１５インサート
５レベルモルタル１６アンカーボルト
６既設基礎１７構造用合板
７増し打ち基礎１８リブプレート
８鋼球１９既設柱
９土台用支承２０スライドプレートDESCRIPTION OF SYMBOLS 1 Seismic isolation plate support 10 bolts 1a Plate upper plate support 11 Nut 1b Plate lower plate support 12 Penetration 2 Conical part 13 Cat 3 Missing spherical recess 14 Existing base 4 Stopper 15 Insert 5 Level mortar 16 Anchor bolt 6 Existing foundation 17 Structural plywood 7 Additional foundation 18 Rib plate 8 Steel ball 19 Existing pillar 9 Base support 20 Slide plate

Claims

円錐部２と欠球型窪み３及びストッパー４を設け皿型盤に加工した免震装置用支承（図１、２参照）Base for seismic isolation device with conical section 2, missing spherical recess 3, and stopper 4, processed into a dish mold (see Figs. 1 and 2)

請求項１の免震装置用支承１の下部支承１ｂを既設基礎６の上部に接置して、その下部に増し打ち基礎７を設けて、下部支承１ｂの上部に、鋼球８を乗せ、その上に、請求項１で形成させた免震装置用支承１を１８０度回転させた上部支承１ａを設け、これに土台用支承９を固定した、免震レトロフィット工法（図４，５参照）The lower support 1b of the base isolation device support 1 according to claim 1 is placed in contact with the upper part of the existing foundation 6 and an additional striking foundation 7 is provided at the lower part, and a steel ball 8 is placed on the upper part of the lower support 1b, On top of that, the seismic isolation retrofit method (see FIGS. 4 and 5) is provided with an upper support 1a obtained by rotating the base isolation device support 1 formed in claim 1 by 180 degrees and a base support 9 fixed thereto. )