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JP4155682B2 - Exterior wall repair structure - Google Patents
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JP4155682B2 - Exterior wall repair structure - Google Patents

Exterior wall repair structure Download PDF

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Publication number
JP4155682B2
JP4155682B2 JP30374799A JP30374799A JP4155682B2 JP 4155682 B2 JP4155682 B2 JP 4155682B2 JP 30374799 A JP30374799 A JP 30374799A JP 30374799 A JP30374799 A JP 30374799A JP 4155682 B2 JP4155682 B2 JP 4155682B2
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Japan
Prior art keywords
wall
trunk edge
existing
parapet
cap
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JP2001123637A (en
Inventor
貴裕 星川
英喜 滝口
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IG Kogyo Co Ltd
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IG Kogyo Co Ltd
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Description

【0001】
【発明の属する技術分野】
本発明は建築、構築物の既存外壁面、特にパラペットを有する建物のALC部材(軽量気泡コンクリート)を中心とした既存外壁面を新規外壁で改修するための工法に関するものである。さらに詳しくは、新規の乾式壁材を取り付けるための固定具を確実に建物の躯体(下地材)に直接固定することによって、ALC外壁に損傷を与えず、しかも、新規外壁材の取付強度も充分な外壁改修構造に関するものである。
【0002】
【従来の技術】
従来、ALC部材を使用した外壁の改修は、古くなった既存のALC外壁をすべて撤去して、既存の躯体や胴縁等の壁下地材に新規外壁を形成する工法や、ALC外壁面に直接新規の乾式壁材を当接して、乾式壁材をコンクリートアンカー等の固定具を用いて、ALC壁そのものを壁下地材として利用して改修した工法が一般的に知られている。
【0003】
【発明が解決しようとする課題】
しかしながら、上記のように古くなった既存のALC等の外壁をすべて撤去して、既存の躯体や胴縁等の壁下地材に新規外壁を形成した工法では、撤去のための費用の増大や撤去した廃材の処理に課題があると共に、工事中は外壁が無い状態となり、工事期間中は建物内部を利用することができなくなる課題があった。
【0004】
また、ALC外壁をそのまま壁下地材として利用し、新規外壁材を施工する工法では、そもそも古くなったALC外壁は、その性質により凍害や経時変化で、ひび割れや一部脱落、強度劣化が進んでおり、これを壁下地として利用することは、取り付けられた新規壁材の取り付け強度に問題が有り、台風や地震等の外的衝撃により脱落したり、剥がれたりする危険を伴っていた。さらに、ALC外壁の表面には凹凸があり、そのまま新規外壁を施工すると凹凸による不陸調整が困難で、張り上がった新規壁面にも凹凸が発生し、美観性にも劣るものであった。さらに、パラペットは笠木等によって覆われるのみであって、パラペットを改修外壁の強度の向上に活用する技術思想が存在しなかった。
【0005】
【課題を解決するための手段】
本発明はこのような欠点を除去するため、パラペットを有する建物の外壁を改修する構造において、軸体と、ワッシャ部、外面にネジ山を有するネジ部、工具の打ち込み部と合致する形状の保持部を形成した頭部からなり、軸体が既存外壁を貫通して下地材に打ち込まれる固定具と、固定具のネジ部と合致するネジ部を有し外方に平滑面を有する取付キャップと、取付キャップの平滑面に取り付けられる横胴縁と、相対する横胴縁を垂直に接続するように横胴縁に取り付けられた縦胴縁と、縦胴縁、横胴縁のうち少なくとも一方に固定して既存外壁を覆う新規外壁材と、既存パラペットの少なくとも頭部を覆う笠木とから構成し、平滑面の位置は取付キャップを回転させることによって内外方に調整可能であり、笠木はパラペットの少なくとも頭部を覆いつつパラペットに固定し、既存外壁の最上部に位置する横胴縁は笠木に固定されている外壁改修構造を提案する。
【0006】
【発明の実施の形態】
以下に、図面を用いて本発明に係る外壁改修構造について詳細に説明する。図1〜図4は本発明の外壁改修構造を用いて既存のALC壁を改修した構造の一実施例を示すものであり、改修を施す建物AはパラペットEを有するものである。なお、図1は改修を施した建物Aの全体図、図2はパラペットE近傍の拡大図、図3、4は既存外壁Dの中間部の拡大図であり、Bは改修外壁、Cは下地材、Fは固定具、Gは取付キャップ、Hは横胴縁、Iは縦胴縁、Jは連結具、Kは笠木、Lは笠木取付具、Mは新規外壁材である。
【0007】
笠木取付材Lは、例えば図5(a)に示すような形状を有するもので、パラペットEの頭部に取り付けられ、笠木Kを取り付ける下地材として機能するものである。笠木取付材Lは、挟持片1、2をパラペットEの側面に当接しつつ挟持し、図示しない固定具や金具を用いてパラペットEに強固に取り付けられる。
【0008】
笠木Kは、例えば図5(b)に示すような形状を有し、笠木取付材Lと一体化して取り付けられ、パラペットEの少なくとも頭部を被覆するものであり、ガイド片3、4を挟持片1、2に当接しつつ図示しない固定具等を用いて固定される。なお、ガイド片3には溶接、接着、固定具等の使用によって、既存外壁Dの最上部に位置する横胴縁Hが取り付けられるものである。
【0009】
下地材Cは、建物の躯体および既存外壁Dの取り付け下地となるもので、図示するような水平方向に配置された横架材からなり、さらに具体的にはH型鋼材、もしくは図示しないが角型鋼材、C型鋼材(リップ溝型鋼材)、L字アングル材、溝型鋼材等の鉄骨の下地材、もしくは木質の柱材等からなるものである。
【0010】
既存外壁Dは、H型鋼材等からなる下地材Cにアングルa、タテカベプレートbを介して固定されているものである。なお、図2は改修時期にきている一般的な挿入筋工法にて取り付けられているALC外壁の例を示しており、この他にも既存外壁Dの取り付け方は種々あり、これに限定されるものではない。また、cは既存外壁Dの目地部に充填される充填目地材である。
【0011】
固定具Fは、素材としては強度に優れた各種鋼材や、鉄、ステンレス、アルミニウム、チタン、繊維強化された各種合成樹脂等からなるもので、例えば図6(a)に示すように軸体11の先端部と頭部14の近傍にネジ部12、13を形成し、また頭部14には内方から順にワッシャ部15、保持部16、ネジ部17を有する構成のものを使用する。ワッシャ部15は既存外壁Dに当接する部分で保持部16、ネジ部17と一体化していても分離していても良いもので、ワッシャ部15を既存外壁Dの表面に当接しつつネジ部12を下地材Cに到達させることによって、固定具Fを強固に固定する。保持部16はワッシャ部15の外方に形成し固定具Fを打ち込む際に、工具の打ち込み部と合致する形状に形成するものであり、ワッシャ部15の径以下の径を有するもので、ここでは六角ナット状に形成したものを使用する。ネジ部17は保持部16の外方に形成し、保持部16の径以下の有するもので、取付キャップGに形成したネジ部18とねじ結合する部分であり、その内部を空洞化することができる。
【0012】
固定具Fの取り付けピッチとしては、新規外壁材Mに必要充分な取付強度(耐風圧強度)を満たす範囲内であれば任意で、例えば、水平方向のピッチは600、900、1200、1500mm位、垂直方向のピッチは、建物の種類によっても異なるが、一般的には1階層分の高さ3500mm位である。
【0013】
取付キャップGは、例えば図6(b)、(c)に示すような短尺筒状の形状のものを使用する。すなわち、取付キャップGの内面にはネジ部17とネジ結合する形状のネジ部18を形成し、また外方には横胴縁Hを取り付ける面である平滑面19を形成する。固定具Fと取付キャップGは、図3(d)に示すようにネジ部17と、ネジ部18(図示せず)を合致させ、取付キャップGを回転させることで平滑面19の内外方についての位置を調整することができる。なお、既存外壁Dと横胴縁H縦胴縁Iの間には、少なくともワッシャ部15、保持部16、取付キャップGの厚さを合わせた分の幅を有する通気空間21が確保される。
【0014】
図7(a)は、横胴縁H、縦胴縁Iの一例を示すものである。横胴縁Hは、平滑面19上に水平方向に取り付けられ、新規外壁材Mを取り付ける下地として機能するもので、断面略四角形の長尺体であり、図7(b)に示すような略L字状の連結材Jを用いて縦胴縁Iと連結される。
【0015】
図8は、新規外壁材Mの一例を示すものである。すなわち、新規外壁材Mは、表面材33と裏面材34によって芯材35をサンドイッチした構造であり、その上下端にはそれぞれ嵌合可能な形状の雄型連結部31、雌型連結部32を形成するものである。新規外壁材Mを、各雄型連結部31と雌型連結部32を係合しつつ上下に連続して配することで既存外壁Dの全面を覆い隠し、美観の良い改修外壁Aを完成させるものである。
【0016】
表面材33は金属板、例えば鉄、アルミニウム、銅、ステンレス、チタン、アルミ・亜鉛合金メッキ鋼板、ホーロー鋼板の一種(勿論、これらを各種色調に
塗装したカラー板も含む)や、プラスチック薄板、FRP、塩化ビニル、ポリカーボネイト等の合成樹脂板等からなるもの、およびこれらを組み合わせたものであり、これらの一種以上をロール成形、プレス成形、押出成形等によって形成したものである。雄型連結部31、雌型連結部32は、表面材33の上下端をそれぞれ嵌合可能な形状に形成したものである。
【0017】
裏面材34はアスベスト紙、クラフト紙、アスファルトフェルト、金属箔(Al、Fe、Pb、Cu)、合成樹脂シート、ゴムシート、布シート、石膏紙、水酸化アルミ紙、ガラス繊維不織布等の1種、または2種以上をラミネートしたもの、あるいは防水処理、難燃処理されたシート状物からなるもの、もしくは表面材33と同様の材質からなるものである。
【0018】
芯材35は新規外壁材Gに断熱性及び防、耐火性を有させるものであり、ポリウレタンフォーム、ポリイソシアヌレートフォーム、フェノールフォーム、塩化ビニルフォーム、ポリエチレンフォーム、ポリスチレンフォーム、ユリアフォーム等からなるものである。芯材35を有する新規外壁材Mを既存外壁Dの全表面に配することにより、改修外壁Bの外観を美しく仕上げるのはもとより、断熱性、及び防、耐火性を向上させることができる。
【0019】
以下に、改修外壁Bを形成する工程について説明する。まず図9のように、所定の工具を用いて固定具Fの軸体11を既存外壁Dを貫通させつつネジ部12の範囲を下地材Cまで到達させ、かつワッシャ部15を既存外壁Dの表面に当接させるように固定する。なお、固定具Fの打ち込みは、保持部16を工具の打ち込み部と合致させて行う。
【0020】
次に図10に示すように、ネジ部17とネジ部18をネジ結合して回転させることで、取付キャップGを既存外壁Dの表面側に取り付ける。ネジ部17とネジ部18をネジ結合としたことで、取付キャップGを回転させることにより平滑面19の位置を内外方向へ移動ができ、ALC外壁の厚みの違いへの対応や不陸の調整も可能となり、新規外壁の張り上がりの美観性を向上させることができる。
【0021】
次に図11に示すように、平滑面19上に横胴縁Hの一面を当接しつつ固定具α(ヘクス、テクス、スクリュウビス等)を打ち込むことにより、横胴縁Hを固定する。なお、既存外壁Dの最上部に位置し、パラペットEに笠木取付具Lを介して固定した笠木Kの取付面3取り付けられる横胴縁Hの表面と、平滑面19に取り付けた横胴縁Hの表面は、同一平面に揃えるように調整する。
【0022】
次に図12に示すように、連結材Jを横胴縁H、縦胴縁Iの両者に当接しつつ固定具βを打ち込むことにより、横胴縁Hと縦胴縁Iを連結する。縦胴縁Iを、笠木と一体に取り付けた横胴縁Hに固定することにより、建物A全体と改修外壁Bの耐震性、強度をより向上させることができる。
【0023】
次に図13に示すように、新規外壁材Mを縦胴縁Iの表面側に、固定具γによって固定し、下方から上方に雄型連結部31と雌型連結部32を係合しつつ貼り合わせていくことによって、図3に示すような改修外壁Bを形成するものである。
【0024】
以上説明したのは、本発明にかかる外壁改修構造の一実施例であり、図14〜図22に示すような構成を採ったり、部材を用いたりすることができる。図14〜16は固定具Fの頭部4よりも径がやや大きく、ワッシャ部5から保持部7まで納まる程度の深さを有する溝部27を既存外壁Dに穿設し、横胴縁Hの一面を平滑面9と既存外壁Dの表面の両方に当接しつつ取り付ける例である。溝部27を穿設した場合、既存外壁Dと新規外壁材Mの距離は小さくなり、通気空間21の幅としては横胴縁Hの厚みの分だけ確保される。なお、既存外壁Dの最上部に位置する横胴縁Hは、図14に示すように笠木Kと既存外壁Dの両者に当接する。
【0025】
図17、18は、固定具Fの軸体11を打ち込むための下孔28を設けた改修外壁Bの例である。軸体11の径よりも若干大きい径を有する下孔28をホールソー等によって穿設することで、固定具Fによって既存外壁Dを打ち抜く必要がなく、打ち込みを容易ならしめることができる。
【0026】
図19(a)〜(e)は、固定具Fと取付キャップGの変形例であり、図19(a)は、ネジ部17、ネジ部18の径を小さく形成した例である。図19(b)はネジ部17を内側に、ネジ部18を外側に形成した例である。図19(c)は頭部14の内方から順にワッシャ15、ネジ部17、保持部16を形成し、またキャップ材Eの奥行きを大きく形成してネジ部18を内方寄りに形成することでネジ結合するようにした例である。図19(d)は、ワッシャ15とネジ部17の径を同一化(一体化)し、ネジ部17とネジ結合し得る大きさの径にキャップ材Eのネジ部18を形成した例である。図19(e)は保持部16の内部にネジ部17を形成し、ネジ部18とネジ結合するようにした例である。
【0027】
図20(a)〜(j)に示す例は、平滑面19の形状の変形例である。平滑面19を変形することにより、横胴縁Hの取り付けが容易になるのみならず、取付キャップEを回転させやすくなり、平滑面19の不陸調整が容易になるものである。
【0028】
図21(a)〜(j)は、横胴縁H、縦胴縁Iの変形例を断面図で示したものであり、41は既存外壁Dの表面に当接、固定される固定面、42は新規外壁材Mを取り付ける取付面を示している。横胴縁H、縦胴縁Iを変形することにより、既存外壁D面への取り付けが容易になるのみならず、新規外壁材Mの取り付けも容易ならしめることができる。
【0029】
図22は、長尺体である芯体43と、同じく長尺体であるカバー体44とを一体化し、カバー体44に設けた係止片45により芯体43の内部に保持するようにして横胴縁H、縦胴縁Iを形成したことにより、横胴縁H、縦胴縁Iの取付キャップGへの固着を強固に行うことができるのみならず、新規外壁材Mの固定をも強固ならしめることができる。なお図示しないが、芯体43とカバー体44の固着は、エアガン、接着剤等を用いて行うことができる。
【0030】
【発明の効果】
以上説明したように本発明に係る外壁改修構造によれば、▲1▼既存外壁を解体する必要がないので、施工工数を省略できると共に、工期を大幅に短縮することができ、しかも施工中の居住や利用に何等支障を来さない。▲2▼既存外壁上に新規外壁を形成するので、施工が簡単でコストを節約できる。▲3▼既存外壁と新規外壁材との2重壁工法となり、断熱性、防音性、防火性に富む工法となる。▲4▼固定具と取付キャップをネジ結合とし、伸縮機能を持たせることで、下地材の不陸の調整が容易に行え、施工が容易となると共に、新規外壁材の張り上がりの美観性が向上する。▲5▼縦胴縁を、笠木と一体に取り付けた横胴縁に固定することにより、建物全体と改修外壁の耐震性、強度をより向上させることができる。等の特徴、効果がある。
【図面の簡単な説明】
【図1】本発明に係る外壁改修構造の全体図である。
【図2】本発明に係る外壁改修構造の代表例の部分拡大図である。
【図3】本発明に係る外壁改修構造の代表例の部分拡大図である。
【図4】本発明に係る外壁改修構造の代表例の部分拡大断面図である。
【図5】笠木取付具と笠木の説明図である。
【図6】固定具と取付キャップの説明図である。
【図7】横胴縁、縦胴縁、連結材の説明図である。
【図8】新規外壁材の説明図である。
【図9】本発明に係る外壁改修構造の改修手順を示す説明図である。
【図10】本発明に係る外壁改修構造の改修手順を示す説明図である。
【図11】本発明に係る外壁改修構造の改修手順を示す説明図である。
【図12】本発明に係る外壁改修構造の改修手順を示す説明図である。
【図13】本発明に係る外壁改修構造の改修手順を示す説明図である。
【図14】本発明に係る外壁改修構造のその他の例である。
【図15】本発明に係る外壁改修構造のその他の例である。
【図16】本発明に係る外壁改修構造のその他の例である。
【図17】本発明に係る外壁改修構造のその他の例である。
【図18】本発明に係る外壁改修構造のその他の例である。
【図19】固定具と取付キャップのその他の例である。
【図20】取付キャップの平滑面のその他の例である。
【図21】横胴縁、縦胴縁のその他の例である。
【図22】横胴縁、縦胴縁のその他の例である。
【符号の説明】
α 固定具
β 固定具
γ 固定具
a アングル
b タテカベプレート
c 充填目地材
A 建物
B 改修外壁
C 下地材
D 既存外壁
E パラペット
F 固定具
G 取付キャップ
H 横胴縁
I 縦胴縁
J 連結材
K 笠木
L 笠木取付具
M 新規外壁材
1 挟持片
2 挟持片
3 ガイド片
4 ガイド片
11 軸体
12 ネジ部
13 ネジ部
14 頭部
15 ワッシャ部
16 保持部
17 ネジ部
18 ネジ部
19 平滑面
21 通気空間
22 固定面
23 取付面
24 芯材
25 カバー体
26 係止片
27 溝部
28 下孔
31 雄型連結部
32 雌型連結部
33 表面材
34 裏面材
35 芯材
41 固定面
42 取付面
43 芯体
44 カバー体
45 係止片
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a construction method for repairing an existing outer wall surface of a building or structure, particularly an existing outer wall surface centering on an ALC member (lightweight cellular concrete) of a building having a parapet, with a new outer wall. More specifically, by fixing the fixture for attaching the new dry-type wall material directly to the building frame (base material), the ALC outer wall is not damaged, and the new outer wall material has sufficient mounting strength. This is related to the renovation structure of the outer wall.
[0002]
[Prior art]
Conventionally, the renovation of the outer wall using ALC members has been done by removing all the existing ALC outer walls and forming a new outer wall on the wall base material such as the existing frame or trunk edge, or directly on the ALC outer wall surface. There is generally known a construction method in which a new dry wall material is brought into contact, the dry wall material is repaired by using a fixture such as a concrete anchor, and the ALC wall itself is used as a wall base material.
[0003]
[Problems to be solved by the invention]
However, in the construction method in which all the existing outer walls such as ALC are removed as described above and a new outer wall is formed on the wall base material such as the existing frame or trunk edge, the cost for removal is increased or removed. There is a problem in the treatment of the waste materials, and there is a problem that there is no outer wall during construction, and the inside of the building cannot be used during the construction period.
[0004]
In addition, in the construction method that uses the ALC outer wall as it is as the base material for the wall and constructs the new outer wall material, the old ALC outer wall is cracked, partly dropped, and deteriorated in strength due to frost damage and changes over time due to its properties. However, using this as a wall base has a problem in the mounting strength of the attached new wall material, and it has a risk of falling off or peeling off due to an external impact such as a typhoon or an earthquake. Furthermore, the surface of the ALC outer wall has irregularities, and if a new outer wall is constructed as it is, it is difficult to adjust the unevenness due to the irregularities, and irregularities are also generated on the new wall surface, which is inferior in aesthetics. Furthermore, the parapet is only covered with a headboard or the like, and there was no technical idea for utilizing the parapet to improve the strength of the modified outer wall.
[0005]
[Means for Solving the Problems]
In the present invention, in order to eliminate such drawbacks, in a structure for renovating the outer wall of a building having a parapet, a shaft body, a washer portion, a screw portion having a screw thread on the outer surface, and a shape matching with a tool driving portion are maintained. A fixing tool that has a head portion formed with a shaft, the shaft body is driven into the base material through the existing outer wall, and a mounting cap that has a screw portion that matches the screw portion of the fixing tool and has a smooth surface on the outside. A horizontal trunk edge that is attached to the smooth surface of the mounting cap, a vertical trunk edge that is attached to the horizontal trunk edge so as to vertically connect the opposite horizontal trunk edges, and at least one of the vertical trunk edge and the horizontal trunk edge. It consists of a new outer wall material that covers the existing outer wall in a fixed manner, and a cap that covers at least the head of the existing parapet, and the position of the smooth surface can be adjusted inward and outward by rotating the mounting cap. At least While covering the head is fixed to the parapet, Yokodoen located on top of the existing outer wall proposes an outer wall repair structure that is fixed to the coping.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the outer wall repair structure according to the present invention will be described in detail with reference to the drawings. 1 to 4 show an embodiment of a structure in which an existing ALC wall is repaired using the outer wall repair structure of the present invention, and a building A to be repaired has a parapet E. FIG. 1 is an overall view of a renovated building A, FIG. 2 is an enlarged view of the vicinity of a parapet E, FIGS. 3 and 4 are enlarged views of an intermediate portion of an existing outer wall D, B is a modified outer wall, and C is a groundwork. Material, F is a fixing tool, G is a mounting cap, H is a horizontal trunk edge, I is a vertical trunk edge, J is a coupling tool, K is a headboard, L is a headboard mounting tool, and M is a new outer wall material.
[0007]
The headboard attaching material L has, for example, a shape as shown in FIG. 5A, is attached to the head of the parapet E, and functions as a base material for attaching the headboard K. The headboard attaching material L is sandwiched between the holding pieces 1 and 2 while being in contact with the side surface of the parapet E, and is firmly attached to the parapet E using fixing tools and metal fittings (not shown).
[0008]
The headboard K has, for example, a shape as shown in FIG. 5B, is attached integrally with the headboard mounting material L, covers at least the head of the parapet E, and sandwiches the guide pieces 3 and 4. It fixes using the fixing tool etc. which are not illustrated in contact with the pieces 1 and 2. In addition, the horizontal trunk edge H located in the uppermost part of the existing outer wall D is attached to the guide piece 3 by use of welding, adhesion | attachment, a fixture, etc.
[0009]
The base material C is a base for mounting the building frame and the existing outer wall D, and is composed of horizontal members arranged in the horizontal direction as shown in the figure. It consists of a steel base material such as a mold steel material, a C-shaped steel material (lip groove steel material), an L-shaped angle material, and a groove steel material, or a wooden pillar material.
[0010]
The existing outer wall D is fixed to a base material C made of an H-type steel material or the like via an angle a and a vertical plate b. Note that FIG. 2 shows an example of an ALC outer wall that is attached by a general insertion reinforcement method approaching the renovation time. There are various other ways of attaching the existing outer wall D, and the present invention is limited to this. It is not something. Further, c is a filling joint material filled in the joint portion of the existing outer wall D.
[0011]
The fixture F is made of various steel materials having excellent strength, iron, stainless steel, aluminum, titanium, various synthetic resins reinforced with fibers, and the like, for example, as shown in FIG. Screw portions 12 and 13 are formed in the vicinity of the front end portion and the head portion 14, and the head portion 14 has a structure having a washer portion 15, a holding portion 16, and a screw portion 17 in order from the inside. The washer portion 15 is a portion that abuts against the existing outer wall D and may be integrated with or separated from the holding portion 16 and the screw portion 17, and the screw portion 12 while the washer portion 15 abuts against the surface of the existing outer wall D. By reaching the base material C, the fixture F is firmly fixed. The holding portion 16 is formed outside the washer portion 15 and is formed in a shape that matches the driving portion of the tool when the fixing tool F is driven, and has a diameter equal to or smaller than the diameter of the washer portion 15. Then, a hexagonal nut is used. The screw portion 17 is formed outside the holding portion 16 and has a diameter equal to or smaller than the diameter of the holding portion 16. The screw portion 17 is a portion that is screw-coupled with the screw portion 18 formed in the mounting cap G, and the inside thereof can be hollowed out. it can.
[0012]
The mounting pitch of the fixture F is arbitrary as long as it is within a range that satisfies the necessary and sufficient mounting strength (wind pressure resistance) for the new outer wall material M. For example, the horizontal pitch is about 600, 900, 1200, 1500 mm, The vertical pitch varies depending on the type of building, but is generally about 3500 mm in height for one floor.
[0013]
As the mounting cap G, for example, a short cylindrical shape as shown in FIGS. 6B and 6C is used. That is, a screw portion 18 having a shape that is screw-coupled with the screw portion 17 is formed on the inner surface of the mounting cap G, and a smooth surface 19 that is a surface to which the horizontal trunk edge H is attached is formed on the outer side. As shown in FIG. 3D, the fixing tool F and the mounting cap G are aligned with the screw portion 17 and the screw portion 18 (not shown), and the mounting cap G is rotated so that the smooth surface 19 is inward and outward. Can be adjusted. In addition, between the existing outer wall D and the horizontal trunk edge H and the vertical trunk edge I, a ventilation space 21 having a width corresponding to at least the thickness of the washer portion 15, the holding portion 16, and the mounting cap G is secured.
[0014]
FIG. 7A shows an example of the horizontal trunk edge H and the vertical trunk edge I. FIG. The horizontal trunk edge H is attached to the smooth surface 19 in the horizontal direction and functions as a base on which the new outer wall material M is attached. The horizontal trunk edge H is a long body having a substantially rectangular cross section, and is substantially as shown in FIG. An L-shaped connecting material J is used to connect to the longitudinal trunk edge I.
[0015]
FIG. 8 shows an example of the new outer wall material M. That is, the new outer wall material M has a structure in which a core material 35 is sandwiched between a front surface material 33 and a back surface material 34, and a male connection portion 31 and a female connection portion 32 each having a shape that can be fitted to the upper and lower ends. To form. A new outer wall material M is continuously arranged in the vertical direction while engaging each male connecting portion 31 and female connecting portion 32, thereby covering the entire surface of the existing outer wall D and completing a modified outer wall A having a beautiful appearance. Is.
[0016]
The surface material 33 is a metal plate such as iron, aluminum, copper, stainless steel, titanium, an aluminum / zinc alloy plated steel plate, a type of enameled steel plate (of course, including color plates coated with various colors), plastic thin plate, FRP These are composed of synthetic resin plates such as vinyl chloride and polycarbonate, and combinations thereof, and one or more of these are formed by roll molding, press molding, extrusion molding or the like. The male connection part 31 and the female connection part 32 are formed so that the upper and lower ends of the surface material 33 can be fitted to each other.
[0017]
Back material 34 is one kind of asbestos paper, craft paper, asphalt felt, metal foil (Al, Fe, Pb, Cu), synthetic resin sheet, rubber sheet, cloth sheet, gypsum paper, aluminum hydroxide paper, glass fiber nonwoven fabric, etc. Or a laminate of two or more types, a sheet-like material that has been waterproofed or flame-retardant, or a material similar to the surface material 33.
[0018]
The core material 35 is used to make the new outer wall material G have heat insulation, prevention and fire resistance, and is made of polyurethane foam, polyisocyanurate foam, phenol foam, vinyl chloride foam, polyethylene foam, polystyrene foam, urea foam, etc. It is. By arranging the new outer wall material M having the core material 35 on the entire surface of the existing outer wall D, not only the appearance of the modified outer wall B can be finished beautifully, but also the heat insulation, prevention, and fire resistance can be improved.
[0019]
Below, the process of forming the repair outer wall B is demonstrated. First, as shown in FIG. 9, a predetermined tool is used to pass the shaft 11 of the fixture F through the existing outer wall D, the range of the screw portion 12 reaches the base material C, and the washer 15 is attached to the existing outer wall D. Fix so that it touches the surface. The fixing tool F is driven by aligning the holding portion 16 with the tool driving portion.
[0020]
Next, as shown in FIG. 10, the attachment cap G is attached to the surface side of the existing outer wall D by screwing the screw portion 17 and the screw portion 18 and rotating them. Since the screw part 17 and the screw part 18 are screwed together, the position of the smooth surface 19 can be moved inward and outward by rotating the mounting cap G, and it is possible to cope with the difference in the thickness of the ALC outer wall and to adjust the unevenness. It is also possible to improve the aesthetic appearance of the new outer wall.
[0021]
Next, as shown in FIG. 11, the horizontal trunk edge H is fixed by driving a fixture α (hex, tex, screw screw, etc.) while abutting one surface of the horizontal trunk edge H on the smooth surface 19. It should be noted that the surface of the horizontal trunk edge H attached to the mounting surface 3 of the headboard K, which is located on the uppermost part of the existing outer wall D and fixed to the parapet E via the headboard mounting tool L, and the horizontal trunk edge H attached to the smooth surface 19 The surface of is adjusted so as to be aligned on the same plane.
[0022]
Next, as shown in FIG. 12, the fixing member β is driven while the connecting member J is in contact with both the horizontal trunk edge H and the vertical trunk edge I, thereby connecting the horizontal trunk edge H and the vertical trunk edge I. By fixing the vertical trunk edge I to the horizontal trunk edge H attached integrally with the headboard, the earthquake resistance and strength of the entire building A and the repaired outer wall B can be further improved.
[0023]
Next, as shown in FIG. 13, the new outer wall material M is fixed to the surface side of the vertical trunk edge I by the fixture γ, and the male connecting portion 31 and the female connecting portion 32 are engaged from below to above. By attaching them together, a modified outer wall B as shown in FIG. 3 is formed.
[0024]
What has been described above is one embodiment of the outer wall repair structure according to the present invention, and the configuration shown in FIGS. 14 to 22 or a member can be used. 14 to 16, a groove portion 27 having a diameter slightly larger than the head portion 4 of the fixture F and having a depth enough to fit from the washer portion 5 to the holding portion 7 is formed in the existing outer wall D. In this example, one surface is attached in contact with both the smooth surface 9 and the surface of the existing outer wall D. When the groove 27 is formed, the distance between the existing outer wall D and the new outer wall material M is reduced, and the width of the ventilation space 21 is ensured by the thickness of the horizontal trunk edge H. In addition, the horizontal trunk edge H located in the uppermost part of the existing outer wall D contacts both the headboard K and the existing outer wall D as shown in FIG.
[0025]
17 and 18 are examples of the modified outer wall B provided with a pilot hole 28 for driving the shaft body 11 of the fixture F. FIG. By drilling the lower hole 28 having a diameter slightly larger than the diameter of the shaft body 11 with a hole saw or the like, it is not necessary to punch out the existing outer wall D with the fixture F, and the driving can be facilitated.
[0026]
FIGS. 19A to 19E are modified examples of the fixing tool F and the mounting cap G, and FIG. 19A is an example in which the diameters of the screw portion 17 and the screw portion 18 are reduced. FIG. 19B shows an example in which the screw portion 17 is formed on the inner side and the screw portion 18 is formed on the outer side. In FIG. 19 (c), a washer 15, a screw portion 17, and a holding portion 16 are formed in order from the inside of the head portion 14, and the cap material E is formed to have a large depth so that the screw portion 18 is formed inward. This is an example in which screw connection is used. FIG. 19D is an example in which the diameters of the washer 15 and the screw portion 17 are made the same (integrated), and the screw portion 18 of the cap material E is formed in a diameter that can be screw-coupled to the screw portion 17. . FIG. 19 (e) shows an example in which a screw portion 17 is formed inside the holding portion 16 and is screwed to the screw portion 18.
[0027]
The examples shown in FIGS. 20A to 20J are modifications of the shape of the smooth surface 19. By deforming the smooth surface 19, not only the attachment of the horizontal trunk edge H is facilitated, but also the attachment cap E is easily rotated, and the smooth surface 19 can be easily adjusted for unevenness.
[0028]
FIGS. 21A to 21J are sectional views showing modifications of the horizontal trunk edge H and the vertical trunk edge I, and 41 is a fixed surface that comes into contact with and is fixed to the surface of the existing outer wall D. Reference numeral 42 denotes a mounting surface to which the new outer wall material M is attached. By deforming the horizontal trunk edge H and the vertical trunk edge I, not only can the attachment to the existing outer wall D surface be facilitated, but also the attachment of the new outer wall material M can be facilitated.
[0029]
In FIG. 22, a core body 43 that is a long body and a cover body 44 that is also a long body are integrated and held inside the core body 43 by a locking piece 45 provided on the cover body 44. By forming the horizontal trunk edge H and the vertical trunk edge I, not only can the horizontal trunk edge H and the vertical trunk edge I be firmly fixed to the mounting cap G, but also the new outer wall material M can be fixed. It can be strengthened. Although not shown, the core body 43 and the cover body 44 can be fixed using an air gun, an adhesive, or the like.
[0030]
【The invention's effect】
As described above, according to the outer wall renovation structure according to the present invention, (1) it is not necessary to dismantle the existing outer wall, so that the number of construction steps can be omitted, the construction period can be greatly shortened, and the construction is underway. There will be no hindrance to residence and use. (2) Since a new outer wall is formed on the existing outer wall, construction is easy and cost can be saved. (3) A double wall construction method with an existing outer wall and a new outer wall material, and a construction method rich in heat insulation, soundproofing and fireproofing. (4) Fixing and mounting caps are screwed together to provide an expansion / contraction function, making it easy to adjust the unevenness of the base material, facilitating construction, and enhancing the appearance of the new outer wall material. improves. (5) The seismic resistance and strength of the entire building and the repaired outer wall can be further improved by fixing the vertical trunk edge to the horizontal trunk edge that is integrally attached to the headboard. There are features and effects.
[Brief description of the drawings]
FIG. 1 is an overall view of an outer wall repair structure according to the present invention.
FIG. 2 is a partially enlarged view of a representative example of an outer wall repair structure according to the present invention.
FIG. 3 is a partially enlarged view of a representative example of an outer wall repair structure according to the present invention.
FIG. 4 is a partially enlarged cross-sectional view of a typical example of an outer wall repair structure according to the present invention.
FIG. 5 is an explanatory view of a headboard fitting and a headboard.
FIG. 6 is an explanatory diagram of a fixture and a mounting cap.
FIG. 7 is an explanatory diagram of a horizontal trunk edge, a vertical trunk edge, and a connecting material.
FIG. 8 is an explanatory diagram of a new outer wall material.
FIG. 9 is an explanatory view showing a repair procedure of the outer wall repair structure according to the present invention.
FIG. 10 is an explanatory view showing a repair procedure of the outer wall repair structure according to the present invention.
FIG. 11 is an explanatory view showing a repair procedure of the outer wall repair structure according to the present invention.
FIG. 12 is an explanatory diagram showing a repair procedure of the outer wall repair structure according to the present invention.
FIG. 13 is an explanatory view showing a repair procedure of the outer wall repair structure according to the present invention.
FIG. 14 is another example of the outer wall repair structure according to the present invention.
FIG. 15 is another example of the outer wall repair structure according to the present invention.
FIG. 16 is another example of the outer wall repair structure according to the present invention.
FIG. 17 is another example of the outer wall repair structure according to the present invention.
FIG. 18 is another example of the outer wall repair structure according to the present invention.
FIG. 19 is another example of a fixture and a mounting cap.
FIG. 20 is another example of the smooth surface of the mounting cap.
FIG. 21 is another example of a horizontal trunk edge and a vertical trunk edge.
FIG. 22 is another example of a horizontal trunk edge and a vertical trunk edge.
[Explanation of symbols]
α Fixing tool β Fixing tool γ Fixing tool a Angle b Vertical plate C Filling joint A Building B Renovation outer wall C Base material D Existing outer wall E Parapet F Fixing tool G Mounting cap H Horizontal trunk edge I Vertical trunk edge J Connecting material K Headboard L Headboard fitting M New outer wall material 1 Holding piece 2 Holding piece 3 Guide piece 4 Guide piece 11 Shaft body 12 Screw portion 13 Screw portion 14 Head 15 Washer portion 16 Holding portion 17 Screw portion 18 Screw portion 19 Smooth surface 21 Ventilation Space 22 Fixed surface 23 Mounting surface 24 Core material 25 Cover body 26 Locking piece 27 Groove portion 28 Lower hole 31 Male connection portion 32 Female connection portion 33 Surface material 34 Back surface material 35 Core material 41 Fixed surface 42 Mounting surface 43 Core body 44 Cover body 45 Locking piece

Claims (1)

パラペットを有する建物の外壁を改修する構造において、軸体と、ワッシャ部、外面にネジ山を有するネジ部、工具の打ち込み部と合致する形状の保持部を形成した頭部からなり、軸体が既存外壁を貫通して下地材に打ち込まれる固定具と、固定具のネジ部と合致するネジ部を有し外方に平滑面を有する取付キャップと、取付キャップの平滑面に取り付けられる横胴縁と、相対する横胴縁を垂直に接続するように横胴縁に取り付けられた縦胴縁と、縦胴縁、横胴縁のうち少なくとも一方に固定して既存外壁を覆う新規外壁材と、既存パラペットの少なくとも頭部を覆う笠木とから構成し、平滑面の位置は取付キャップを回転させることによって内外方に調整可能であり、笠木はパラペットの少なくとも頭部を覆いつつパラペットに固定し、既存外壁の最上部に位置する横胴縁は笠木に固定されていることを特徴とする外壁改修構造。In a structure for renovating the outer wall of a building having a parapet, it is composed of a shaft body, a washer, a screw portion having a thread on the outer surface, and a head formed with a holding portion having a shape matching the tool driving portion. A fixing tool that penetrates the existing outer wall and is driven into the base material, a mounting cap that has a threaded portion that matches the threaded portion of the fixing tool and has a smooth surface on the outside, and a horizontal trunk edge that is attached to the smooth surface of the mounting cap A vertical trunk edge that is attached to the horizontal trunk edge so as to vertically connect the opposite lateral trunk edges, and a new outer wall material that is fixed to at least one of the vertical trunk edge and the horizontal trunk edge and covers the existing outer wall, It consists of a cap that covers at least the head of the existing parapet, and the position of the smooth surface can be adjusted inward and outward by rotating the mounting cap, and the cap is fixed to the parapet while covering at least the head of the parapet. Outer wall repair structure Yokodoen located at the top of the outer wall, characterized in that fixed to the coping.
JP30374799A 1999-10-26 1999-10-26 Exterior wall repair structure Expired - Fee Related JP4155682B2 (en)

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