JP3685770B2

JP3685770B2 - Large pulling support structure using steel bundles and steel bundles

Info

Publication number: JP3685770B2
Application number: JP2002114942A
Authority: JP
Inventors: 富士男板垣; 淳板垣; 茹張
Original assignee: 多摩エンジニアリング株式会社
Priority date: 2002-04-17
Filing date: 2002-04-17
Publication date: 2005-08-24
Anticipated expiration: 2022-04-17
Also published as: JP2003307021A

Description

【０００１】
【発明の属する技術分野】
本発明は住宅等の建築物における床部の大引を支持するための鋼製束および同鋼製束を用いた大引の支持構造に関する。
【０００２】
【従来の技術とその問題点】
大引は住宅等の建築物において床板を支持する水平構造部材であり、断面が１００×１００ｍｍから１５０×１５０ｍｍ程度の太さの角材や金属製の各パイプ状構造材で鋼製され、大引の端部は基礎や柱によって直接支承される土台に接続され、中央部は必要に応じて束によって支持される。
【０００３】
例えば、広い間取りの部屋の床下における大引は端部を土台で支持するだけでは強度が不足するので、途中を何本かの束で支持しなければならないし、ピアノや大型の書棚等の家具を置く部屋の床下においても床の耐荷重を大ならしめるために所要数の束を設ける。
【０００４】
上述した束には、長さの調節が可能な鋼製束が一般的に用いられており、その構造の一例を図６に示す。
同図６において、符号３１は受け金具、３２はパイプ式ターンバックル、３３はベース板を示しており、ターンバックル３２の中央パイプ３２ａを正逆方向に回動させることによって上下のねじ棒３２ｂ、３２ｃの各下端部と上端部が中央パイプから送り出されまたは収容されてターンバックル全体が伸縮する構成となっている。
【０００５】
建築物の施工の際には、前記ターンバックル３２の操作によってベース板３３から受け金具３１の水平部３１ａまでの高さを建築物のコンクリートベース３４から大引３５の下面高さとほぼ同じに設定して所定の位置に立てておき、受け金具に大引を載せてから再びターンバックルを操作して高さを微調整し、受け金具３１の側板３１ｂ、３１ｂにあけた孔を通して大引を釘３６等の固定具で固定する。
【０００６】
ところで、木材よりなる大引３５は経年変化により徐々に細くなり、上述した従来の鋼製束では、図６中に仮想線で示されるように大引の下面と受け金具３１の水平部３１ａとの間に隙間Ｓが生じる。
このような隙間Ｓが生じると、床上を人が歩く際に釘３６等の固定具と受け金具の側板３１ｂとが擦れていわゆる床鳴りと呼ばれるきしみ音が生じる。
【０００７】
上記きしみ音を解消するには、作業員が床下に入り込み、釘等の固定具を取り外し、ターンバックル３２を操作して受け金具を上昇させて水平部３１ａを大引の下面に当接させ、かつ大引３５の側面と側板３１ｂ、３１ｂとの間の隙間に詰めものをして新たな釘等の固定具で大引を固定する。
【０００８】
しかし、上述した作業は煩雑で手間が掛かり、しかも大引の経年変化は止まらないので、さらなる時間の経過によって再び同様のきしみ音が生じるおそれもあり、根本的な問題解決にはならない。
【０００９】
なお、上述したきしみ音の問題点は大引が木製のものの場合に生じるのであるが、大引に金属製のものを使用する建築物もあり、このような建築物の場合は大引の経年変化による上述のようなきしみ音の発生はない。
【００１０】
しかし、建築物に不等沈下が生じた場合には、従来の鋼製束では大引が木製であるか金属製であるかにかかわらず次ぎのような問題がある。
【００１１】
建築物の不等沈下は地下水位の変動等の地盤の変化によって生じるのであるが、この不等沈下が生じると、鋼製束の受け金具３１と大引３５との間に水平方向および鉛直方向のずれが生じる。
【００１２】
ところで、大引が木製のものである場合には、前述したとおり受け金具３１を釘等の固定具で大引３５に取り付けるのであるが、大引が金属製のものである場合にも互いに係合する凹凸等の係合部を大引と受け金具の間に形成しておき、これらを係合させたり、あるいはボルト等の固定具で互いに固定する。すなわち、大引が木製のものであっても、金属製のものであっても、受け金具と大引との間では水平方向のずれを許容することができない。なお、鉛直方向のずれはターンバックル３２の操作により調節することが可能である。
【００１３】
したがって建築物に不等沈下が生じると従来の鋼製束では、大引と受け金具との間のずれによってこれら大引や受け金具に変形や損傷が発生するおそれがあり、このような変形や損傷は建築物の耐荷重性能を低下せしめる原因となるだけでなく、前述した木製の大引の経年変化によるきしみ音と同様のきしみ音を生じる原因ともなる。
【００１４】
【目的】
本発明の目的とするところは、大引の経年変化によるきしみ音が発生することはなく、また建築物の不等沈下による水平方向および鉛直方向のずれに対する調節を容易に行なうことができて建築物の耐荷重性能を高度に維持することができる鋼製束および同鋼製束を用いた大引支持構造を提供することにある。
【００１５】
【発明の構成】
上記目的を達成するために、本発明に係る鋼製束は、ベース板に立設された柱部の上端に受け金具を備え、柱部はそれぞれ内面に互いに巻き方向の異なる雌ねじ部を形成した下部の第１筒部と上部の第２筒部との間が、これら第１筒部と第２筒部の各雌ねじ部に対応する第１雄ねじ部と第２雄ねじ部が下部と上部にそれぞれ形成され、両雄ねじ部間に回動操作用のハンドル部を設けた雄ねじ体により接続され、上記第１筒部の下端が前記ベース板の上面中央に、第２筒部の上端が前記受け金具の水平部下面にそれぞれ取り付けられ、上記受け金具は、前記水平部の左右に側板部が立設され、かつ水平部の上面に緩衝材が敷設され、また、前記第１筒部を、ベース板に対して左右方向に取付位置が調節できるように取り付け、かつ前記受け金具の側板内面に、上下に延びるガイド溝を形成し、また、上下方向に延び、外側へ突出するガイドリブを有するガイド板を備え、大引の側面に取り付けたガイド板のガイドリブが前記側板のガイド溝内に嵌入されるように構成してある。
【００１６】
また、前記緩衝材の上面に、前後左右の溝を形成した構成のものとしてある。
【００１７】
さらに、前記ベース板の中央に、上方に突出する中央凸部を設け、この中央凸部の平坦面に左右に延びる長孔を設け、ベース板の下面から上方へねじ部を突出せしめたボルトのねじ部に、前記第１筒部の下端部寄り内面に形成した雌ねじ部を、ナットを介して螺合せしめてベース板に第１筒部を取り付け、前記ボルトと、ナットおよび上記雌ねじ部との間を緩めることにより、ベース板に対する第１筒部の左右位置を調節できるようにした構成のものとしてある。
【００１８】
本発明に係る大引支持構造は、ベース板に立設された柱部の上端に受け金具を備え、柱部はそれぞれ内面に互いに巻き方向の異なる雌ねじ部を形成した下部の第１筒部と上部の第２筒部との間が、これら第１筒部と第２筒部の各雌ねじ部に対応する第１雄ねじ部と第２雄ねじ部が下部と上部にそれぞれ形成され、両雄ねじ部間に回動操作用のハンドル部を設けた雄ねじ体により接続され、上記第１筒部の下端が前記ベース板の上面中央に、第２筒部の上端が前記受け金具の水平部下面にそれぞれ取り付けられ、上記受け金具は、前記水平部の左右に側板部が立設され、かつ水平部の上面に緩衝材が敷設され、また、前記第１筒部を、ベース板に対して左右方向に取付位置が調節できるように取り付け、さらに前記受け金具の側板内面に、上下に延びるガイド溝を設けてなる鋼製束の前記ベース板を建築物のコンクリートベースに接着によって固定し、また、上下方向に延び、外側へ突出するガイドリブを有するガイド板を大引の側面に取り付け、上記ガイドリブをガイド溝内に嵌入せしめ、前記受け金具により大引の下面および側面を支持してなる構造としてある。
【００１９】
また、前記緩衝材の上面に、前後左右の溝を形成してなる構造としてある。
【００２０】
さらに、前記鋼製束におけるベース板の中央に、上方に突出する中央凸部を設け、この中央凸部の平坦部に左右に延びる長孔を設け、ベース板の下面から上方へねじ部を突出せしめたボルトのねじ部に、前記第１筒部の下端部寄り内面に形成した雌ねじ部を、ナットを介して螺合せしめてベース板に第１筒部を取り付け、前記ボルトと、ナットおよび上記雌ねじ部との間を緩めることにより、ベース板に対する第１筒部の左右位置を大引の位置にあわせて調節できるようにした構造としてある。
【００２１】
【実施例】
以下、本発明に係る鋼製束および同鋼製束を用いた大引支持構造の実施例を添付図面に基づいて詳細に説明する。
本発明の鋼製束は、ベース板１、柱部２および受け金具３よりなり、ベース板１の中央に立設した柱部２を介して受け金具３が支持されている。
【００２２】
上記柱部２は、下端が前記ベース板１の中央上面に取り付けられた下部の第１筒部４と、上端が受け金具３の下面に固定された上部の第２筒部５と、これら第１筒部、第２筒部を接続する雄ねじ体６を備えている。
【００２３】
上記第１筒部４の下端にはナット７を設けてあり、また第１筒部の下端部寄り内面に雌ねじ部４ｂを形成してあって、これらナットと雌ねじ部に対し、ベース板１の下面側からベース板の長孔９を通してねじ部８ａを上方へ突出させたボルト８のねじ部を螺合せしめて第１筒部４をベース板１に固定してある。
【００２４】
しかして、前記ベース板１の長孔９はベース板の中央凸部１ａの平坦部中央に左右方向に形成されており、中央凸部の側面にあけた窓孔１ｄからレンチ等の工具を差し込んで前記ボルト８の頭部を回り止めし、この状態でナット７を緩めるとベース板１に対する第１筒部４の左右方向の位置、すなわちベース板１に対する受け金具３の左右方向の位置を調節できるようになっている。
【００２５】
前記ベース板の中央凸部１ａの平坦部の高さは前記ボルト８の頭部の厚さ（軸方向の幅）よりも若干（１〜２ｍｍ程度）大としてあり、ボルトが直接荷重を受けないように構成してある。
【００２６】
なお、ベース板１には上記中央凸部１ａの他に補強リブ１ｂおよびコーナー孔１ｃをいずれもプレス成型により設けてあり、補強リブ１ｂはベース板を建築物のコンクリートベース１０に接着剤にて固定する際の接着剤溜まりとなり、コーナー孔１ｃは余剰の接着剤をベース板１の上面側に排出することを目的として設けてある。
【００２７】
前記第１筒部４と第２筒部５の内面には、それぞれ巻き方向が互いに異なる雌ねじ部４ａ、５ａが形成されていて、各雌ねじ部４ａ、５ａに対応する第１雄ねじ部６ａと第２雄ねじ部６ｂが雄ねじ体６の下部と上部にそれぞれ形成されており、両雄ねじ部６ａ、６ｂ間には雄ねじ体６を正逆回動させるためのハンドル部６ｃを設けてあり、このハンドル部は例えばモンキーレンチ等の工具で操作することができるように六角柱状のものとしてある。
【００２８】
また、雄ねじ体６の第１雄ねじ部６ａと第２雄ねじ部６ｂにはそれぞれナット１１ａ、１１ｂを螺合せしめてあって、雄ねじ体６の正逆回動によって柱部２全体を伸縮せしめた際に、これらのナットを第１筒部と第２筒部の開口端に向かって締め付けることにより、第１筒部４、第２筒部５と雄ねじ体６とを強固に締結できるようにしてある。
【００２９】
また、第２筒部５の上端は受け金具３の水平部３ａ下面に溶接により固定されており、受け金具３における水平部の左右には、大引１２の側面を保持するための側板部３ｂ、３ｂを立設してあり、これら側板部の上部は外側に向かって若干拡げてられていて、大引の導入を容易ならしめてある。
上記各側板部３ｂの内面には、上下方向にガイド溝１３、１３を形成してあり、このガイド溝については後述する。
【００３０】
また、受け金具３の水平部３ａ上面には緩衝材１４を敷設してあり、この緩衝材は図３に一部を拡大して示すように上面に前後左右の溝１４ａを形成した例えば厚さが１〜２ｃｍ程度の合成ゴム板よりなるものとしてあり、これらの溝１４ａによって緩衝効果を大ならしめるようにしてある。
【００３１】
次ぎに、上述のように構成した鋼製束の使用方法について説明する。
まず、ボルト８とナット７間を締めて第１筒部４をベース板１の中央に固定し、ベース板を接着剤により建築物のコンクリートベース１０に固定する。
その後、雄ねじ体６のハンドル部６ｃを正逆回動せしめてベース板に対する受け金具３の高さを所定の高さに設定し、ナット１１ａ、１１ｂを締め付ける。
【００３２】
鋼製束によって支持される部分の大引側面に、ガイド板１５、１５を釘１６、１６等の固定具や接着等の適宜の固定手段により取り付ける。このガイド板１５、１５の外側面にはそれぞれ外側に突出し、上下方向に延びるガイドリブ１７、１７が形成されていて、前記受け金具３の側板部３ｂ、３ｂにおけるガイド溝１３、１３内に嵌入できる寸法になっている。なお、ガイドリブ１７、１７の外面とガイド溝１３、１３の内面との間には適宜の遊びを設けておく。
【００３３】
しかして、予めガイド板１５、１５を取り付けた大引１２をガイド板のガイドリブ１７、１７を受け金具のガイド溝１３、１３に合わせて大引の下面を前記水平部３ａ上の緩衝材１４に載せる。
【００３４】
その後、必要に応じて再びナット１１ａ、１１ｂを緩め、雄ねじ体６のハンドル部６ｃを正逆回動せしめて受け金具３の高さを微調整し、施工を完了する。
なお、上述した実施例においては大引１２にガイド板１５、１５を取り付けるようにしてあるが、ガイド板を取り付けないで使用する場合もあるし、またガイド板を使用しない場合には、図５に示されるように側板部にガイド溝を形成していない受け金具１８を用いる場合もある。
【００３５】
上述のように本発明の鋼製束を用いた大引の支持構造においては、建築物の施工時の施工誤差や建築物の不等沈下により大引の位置にずれが生じた場合において次ぎのように大引の位置ずれに対する修正を行なう。
【００３６】
まず、鉛直方向のずれに対しては、ナット１１ａ、１１ｂを緩めて雄ねじ体６のハンドル部６ｃを正逆回動せしめ、受け金具３の高さを調節し、再びナット１１ａ、１１ｂを締める。
【００３７】
また、左右方向のずれやねじれに対しては、ボルト８の頭部を回り止めした状態でナット７を回動させて緩め、長孔９に沿ってボルト８を移動させて左右方向の位置を修正し、また柱部２全体を受け金具３とともに軸まわりに回動せしめてねじれを修正し、修正後にナット７を締めて修正作業を終了する。
【００３８】
さらに、前後方向のずれに対しては、すれが小なるものであればガイド溝１３内面とガイドリブ１７外面との間の遊びがずれを吸収し、ずれが大である場合には大引１２に取り付けてあるガイド板を一旦取り外してその取付位置を変える。
【００３９】
なお、大引１２にガイド板１５を取り付けない場合にはこの前後方向のずれに対する修正は不要である。
【００４０】
【発明の作用、効果】
本発明に係る鋼製束および同鋼製束を用いた大引支持構造によれば、大引と受け金具との間には従来のように釘等の固定具による固定を行なわず、しかも受け金具の水平部上面に設けた緩衝材により大引の下面が支持されるので、木製の大引が経年変化により細くなっても、きしみ音のような不快な騒音が発生することがない。
【００４１】
また、建築物の施工時における施工誤差や建築物の不等沈下によって大引の位置がずれても、ベース板に対する受け金具の水平方向および鉛直方向の位置を容易かつ正確に調節、修正することができ、建築物の耐荷重性能を充分かつ確実に維持することができる。
【図面の簡単な説明】
【図１】本発明に係る鋼製束を用いた大引の支持構造の一部破断正面図。
【図２】図１のII-II線により横断して示すベース板の平面図。
【図３】緩衝材の一部を縦断して示す斜視図。
【図４】本発明に係る鋼製束を用いた大引の支持構造の一部を示す分解斜視図。
【図５】本発明に係る他の鋼製束を用いた大引の支持構造の一部を示す分解斜視図。
【図６】従来の鋼製束を用いた大引の支持構造の一部破断正面図。
【符号の説明】
１ベース板
２柱部
３受け金具
３ａ水平部
３ｂ側板部
４第１筒部
５第２筒部
６雄ねじ体
７ナット
８ボルト
９長孔
１０コンクリートベース
１１ａ、１１ｂナット
１２大引
１３ガイド溝
１４緩衝材
１５ガイド板
１６釘
１７ガイドリブ
１８受け金具[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a steel bundle for supporting a large drawing of a floor portion in a building such as a house and a large drawing support structure using the steel bundle.
[0002]
[Prior art and its problems]
Ohiki is a horizontal structural member that supports floor boards in buildings such as houses, and is made of steel with square bars with a cross section of about 100 x 100 mm to 150 x 150 mm and metal pipe-like structural materials. The ends are connected to a foundation that is directly supported by foundations and pillars, and the center is supported by bundles as needed.
[0003]
For example, a large-scale room underfloor under the floor is not strong enough to support the end with a base, so it must be supported by several bundles along the way, and furniture such as pianos and large bookcases. In order to increase the load capacity of the floor under the floor of the room where the room is placed, a required number of bundles are provided.
[0004]
A steel bundle whose length can be adjusted is generally used for the above-described bundle, and an example of the structure is shown in FIG.
In FIG. 6, reference numeral 31 denotes a metal fitting, 32 denotes a pipe-type turnbuckle, 33 denotes a base plate, and upper and lower screw rods 32b are formed by rotating the central pipe 32a of the turnbuckle 32 in the forward and reverse directions. Each lower end part and upper end part of 32c are sent out or accommodated from the central pipe, and the entire turnbuckle is expanded and contracted.
[0005]
When constructing a building, the height from the base plate 33 to the horizontal portion 31a of the receiving bracket 31 is set to be substantially the same as the height of the bottom surface of the large draw 35 from the base plate 33 by operating the turnbuckle 32. Then, after placing the large pull on the receiving bracket, the turnbuckle is again operated to finely adjust the height, and the large pull is nail through the holes formed in the side plates 31b and 31b of the receiving bracket 31. Fix with 36 or other fixtures.
[0006]
By the way, the large pull 35 made of wood gradually becomes thinner with the passage of time, and in the conventional steel bundle described above, the lower surface of the large pull and the horizontal portion 31a of the receiving bracket 31 as shown by the phantom line in FIG. A gap S is generated between the two.
When such a gap S is generated, when a person walks on the floor, the fixing tool such as the nail 36 and the side plate 31b of the receiving metal rub against each other, so that a so-called squeak noise called floor noise is generated.
[0007]
In order to eliminate the squeak noise, an operator enters under the floor, removes a fixture such as a nail, operates the turnbuckle 32 to raise the catch, and makes the horizontal portion 31a contact the lower surface of the large pull, In addition, the gap between the side surface of the large pull 35 and the side plates 31b and 31b is filled, and the large pull is fixed with a new fixture such as a nail.
[0008]
However, the above-described operation is complicated and troublesome, and the general secular change does not stop, so that a similar squeak noise may occur again with the passage of time, and the fundamental problem cannot be solved.
[0009]
The above-mentioned problem of squeak noise occurs when the forklift is made of wood, but there are also buildings that use metal for the forklift. There is no squeak noise as described above due to the change.
[0010]
However, when uneven settlement occurs in a building, there are the following problems in the conventional steel bundle regardless of whether the draw is made of wood or metal.
[0011]
Uneven settlement of buildings occurs due to ground changes such as groundwater level fluctuations, but when this uneven settlement occurs, the horizontal and vertical directions between the steel bundle receiving bracket 31 and the large pull 35 Deviation occurs.
[0012]
By the way, when the overdraw is made of wood, the receiving bracket 31 is attached to the overdraw 35 with a fixture such as a nail as described above. Engaging portions such as concavities and convexities are formed between the large drawing and the receiving metal fitting, and these are engaged or fixed to each other with a fixing tool such as a bolt. In other words, even if the overdrawing is made of wood or metal, it is not possible to tolerate a horizontal shift between the receiving bracket and the overdrawing. The vertical shift can be adjusted by operating the turnbuckle 32.
[0013]
Therefore, when uneven settlement occurs in a building, in conventional steel bundles, there is a risk that deformation or damage will occur in these overdrawings and receiving brackets due to the deviation between the overdrawing and receiving brackets. The damage not only causes the load bearing performance of the building to deteriorate, but also causes a squeak noise similar to the squeak noise caused by the secular change of the wood.
[0014]
【the purpose】
The object of the present invention is that no squeak noise is generated due to large-scale secular change, and it is possible to easily adjust the horizontal and vertical deviation due to unequal settlement of the building. An object of the present invention is to provide a steel bundle capable of maintaining the load bearing performance of an object at a high level and a large pull support structure using the steel bundle.
[0015]
[Structure of the invention]
In order to achieve the above object, a steel bundle according to the present invention is provided with a receiving metal fitting at the upper end of a column portion erected on a base plate, and each column portion is formed with female screw portions having different winding directions on the inner surface. Between the lower first cylindrical portion and the upper second cylindrical portion, the first male screw portion and the second male screw portion corresponding to the respective female screw portions of the first cylindrical portion and the second cylindrical portion are provided at the lower portion and the upper portion, respectively. Formed and connected by a male screw body provided with a handle portion for rotating operation between both male screw portions, the lower end of the first cylindrical portion is at the center of the upper surface of the base plate, and the upper end of the second cylindrical portion is the receiving metal fitting Each of the receiving brackets has side plate portions erected on the left and right sides of the horizontal portion, and cushioning material is laid on the upper surface of the horizontal portion, and the first cylindrical portion is attached to the base plate. mounted for adjusting the mounting position in the lateral direction with respect to, and the receiving metal A guide groove extending in the vertical direction is formed on the inner surface of the side plate, and a guide plate having a guide rib extending in the vertical direction and projecting outward is provided. The guide rib of the guide plate attached to the side surface of the large pull is in the guide groove of the side plate. It is comprised so that it may be inserted in .
[0016]
Further , the front and rear, right and left grooves are formed on the upper surface of the cushioning material .
[0017]
Further, a central convex portion protruding upward is provided at the center of the base plate, a long hole extending left and right is provided on a flat surface of the central convex portion, and a screw portion protruding upward from the lower surface of the base plate is provided. An internal thread portion formed on the inner surface near the lower end of the first tube portion is screwed to the screw portion via a nut to attach the first tube portion to the base plate, and the space between the bolt, the nut, and the internal thread portion By loosening, the left and right positions of the first tube part with respect to the base plate can be adjusted.
[0018]
The large pulling support structure according to the present invention includes a receiving metal fitting at the upper end of a column portion erected on the base plate, and each column portion includes a lower first tube portion in which female screw portions having different winding directions are formed on the inner surface. A first male screw portion and a second male screw portion corresponding to the female screw portions of the first cylindrical portion and the second cylindrical portion are formed on the lower portion and the upper portion, respectively, between the upper second cylindrical portion. Are connected by a male screw body provided with a handle portion for turning operation, and the lower end of the first cylindrical portion is attached to the center of the upper surface of the base plate, and the upper end of the second cylindrical portion is attached to the lower surface of the horizontal portion of the receiving bracket. The receiving bracket has side plate portions erected on the left and right sides of the horizontal portion, a buffer material is laid on the upper surface of the horizontal portion, and the first tube portion is attached to the base plate in the left-right direction. mounting so that the position can be adjusted, the further side plate inner surface of the receiving metal, vertical Said base plate of steel beams formed by providing the extending guide groove and secured by an adhesive to the concrete base of the building, also extends in the vertical direction, fitted with a guide plate having a guide rib projecting outward on the sides of Obiki, The guide rib is inserted into a guide groove, and the lower surface and side surfaces of the large pull are supported by the receiving metal fitting.
[0019]
Further , the front and rear, right and left grooves are formed on the upper surface of the cushioning material .
[0020]
Further, a central convex portion protruding upward is provided at the center of the base plate in the steel bundle, a long hole extending left and right is provided in the flat portion of the central convex portion, and the screw portion protrudes upward from the lower surface of the base plate. The internal thread portion formed on the inner surface near the lower end of the first tube portion is screwed to the screw portion of the screwed bolt via a nut to attach the first tube portion to the base plate, and the bolt, nut, and internal thread By loosening the space between the first and second portions, the left and right positions of the first cylindrical portion relative to the base plate can be adjusted in accordance with the large pulling position.
[0021]
【Example】
DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a steel bundle according to the present invention and a large pull support structure using the steel bundle will be described in detail with reference to the accompanying drawings.
The steel bundle according to the present invention includes a base plate 1, a column portion 2, and a receiving bracket 3, and the receiving bracket 3 is supported via a column portion 2 erected at the center of the base plate 1.
[0022]
The column part 2 includes a lower first cylindrical part 4 whose lower end is attached to the central upper surface of the base plate 1, an upper second cylindrical part 5 whose upper end is fixed to the lower surface of the receiving metal fitting 3, An external thread body 6 is provided for connecting the first and second cylinder portions.
[0023]
A nut 7 is provided at the lower end of the first cylindrical portion 4, and an internal thread portion 4b is formed on the inner surface near the lower end portion of the first cylindrical portion, and the base plate 1 is opposed to the nut and the internal thread portion. The first cylindrical portion 4 is fixed to the base plate 1 by screwing together the screw portion of the bolt 8 having the screw portion 8a protruding upward from the bottom surface through the long hole 9 of the base plate.
[0024]
Thus, the long hole 9 of the base plate 1 is formed in the horizontal direction in the center of the flat portion of the central convex portion 1a of the base plate, and a tool such as a wrench is inserted through the window hole 1d opened in the side surface of the central convex portion. When the head of the bolt 8 is prevented from rotating and the nut 7 is loosened in this state, the horizontal position of the first cylindrical portion 4 with respect to the base plate 1, that is, the horizontal position of the metal fitting 3 with respect to the base plate 1 is adjusted. It can be done.
[0025]
The height of the flat portion of the central convex portion 1a of the base plate is slightly (about 1 to 2 mm) larger than the thickness (axial width) of the head of the bolt 8, and the bolt is not directly subjected to a load. It is constituted as follows.
[0026]
The base plate 1 is provided with a reinforcing rib 1b and a corner hole 1c in addition to the central convex portion 1a by press molding, and the reinforcing rib 1b is bonded to the concrete base 10 of the building with an adhesive. The corner hole 1 c is provided for the purpose of discharging excess adhesive to the upper surface side of the base plate 1.
[0027]
On the inner surfaces of the first tube portion 4 and the second tube portion 5, female screw portions 4a and 5a having different winding directions are formed, and the first male screw portion 6a corresponding to each of the female screw portions 4a and 5a Two male screw portions 6b are respectively formed on the lower and upper portions of the male screw body 6, and a handle portion 6c for rotating the male screw body 6 forward and backward is provided between the male screw portions 6a and 6b. Is a hexagonal column shape so that it can be operated with a tool such as a monkey wrench.
[0028]
Further, nuts 11a and 11b are screwed into the first male screw portion 6a and the second male screw portion 6b of the male screw body 6, respectively, and when the entire column portion 2 is expanded and contracted by forward and reverse rotation of the male screw body 6. By tightening these nuts toward the open ends of the first cylinder part and the second cylinder part, the first cylinder part 4, the second cylinder part 5 and the male screw body 6 can be firmly fastened.
[0029]
Further, the upper end of the second cylindrical portion 5 is fixed to the lower surface of the horizontal portion 3a of the receiving metal fitting 3 by welding, and the side plate portion 3b for holding the side surface of the pulling 12 on the left and right sides of the horizontal portion of the receiving metal fitting 3. 3b is erected, and the upper portions of these side plate portions are slightly expanded toward the outside to facilitate the introduction of the large pull.
Guide grooves 13 and 13 are formed on the inner surface of each of the side plate portions 3b in the vertical direction, which will be described later.
[0030]
Further, a buffer material 14 is laid on the upper surface of the horizontal portion 3a of the metal fitting 3, and this buffer material has a thickness in which front and rear, left and right grooves 14a are formed on the upper surface as shown in FIG. Is made of a synthetic rubber plate of about 1 to 2 cm, and the buffer effect is increased by these grooves 14a.
[0031]
Next, a method of using the steel bundle configured as described above will be described.
First, the bolt 8 and the nut 7 are tightened to fix the first tube portion 4 to the center of the base plate 1, and the base plate is fixed to the concrete base 10 of the building with an adhesive.
Thereafter, the handle portion 6c of the male screw body 6 is rotated forward and backward to set the height of the receiving bracket 3 with respect to the base plate to a predetermined height, and the nuts 11a and 11b are tightened.
[0032]
The guide plates 15 and 15 are attached to the large side surface of the portion supported by the steel bundle by a fixing device such as a nail 16 or 16 or an appropriate fixing means such as adhesion. Guide ribs 17 and 17 are formed on the outer surfaces of the guide plates 15 and 15 so as to protrude outward and extend in the vertical direction, and can be inserted into the guide grooves 13 and 13 in the side plate portions 3b and 3b of the receiving metal fitting 3. It is a dimension. An appropriate play is provided between the outer surfaces of the guide ribs 17 and 17 and the inner surfaces of the guide grooves 13 and 13.
[0033]
Accordingly, the large pulling 12 with the guide plates 15 and 15 attached in advance is aligned with the guide ribs 17 and 17 of the guide plate and the guide grooves 13 and 13 of the metal fitting, and the lower surface of the large pulling is placed on the cushioning material 14 on the horizontal portion 3a. Put it on.
[0034]
Thereafter, if necessary, the nuts 11a and 11b are loosened again, and the handle portion 6c of the male screw body 6 is rotated forward and backward to finely adjust the height of the metal fitting 3 to complete the construction.
In the above-described embodiment, the guide plates 15 and 15 are attached to the large drawing 12, but there are cases where the guide plates are used without being attached, and when the guide plates are not used, FIG. As shown in FIG. 4, there is a case where a receiving metal fitting 18 having no guide groove formed on the side plate portion is used.
[0035]
As described above, in the large pulling support structure using the steel bundle of the present invention, when the position of the large pulling occurs due to construction errors during construction of the building or uneven settlement of the building, In this way, correction is made for the large displacement.
[0036]
First, for vertical displacement, the nuts 11a and 11b are loosened, the handle portion 6c of the male screw body 6 is rotated forward and backward, the height of the catch 3 is adjusted, and the nuts 11a and 11b are tightened again.
[0037]
Also, with respect to the lateral displacement and twist, the nut 7 is turned and loosened while the head of the bolt 8 is prevented from rotating, and the bolt 8 is moved along the long hole 9 to move the position in the left-right direction. Then, the entire column portion 2 is rotated together with the metal fitting 3 around the axis to correct the twist, and after the correction, the nut 7 is tightened to complete the correction work.
[0038]
In addition, with respect to the displacement in the front-rear direction, if the slip is small, the play between the inner surface of the guide groove 13 and the outer surface of the guide rib 17 absorbs the displacement. Remove the attached guide plate and change its position.
[0039]
If the guide plate 15 is not attached to the large pull 12, no correction for this forward / backward displacement is required.
[0040]
[Operation and effect of the invention]
According to the steel bundle and the large pull support structure using the same steel bundle according to the present invention, the fixing member such as a nail is not fixed between the large pull and the receiving bracket as in the prior art. Since the lower surface of the large pull is supported by the cushioning material provided on the upper surface of the horizontal portion of the metal fitting, even if the wooden large pull becomes thin due to aging, unpleasant noise such as squeak noise does not occur.
[0041]
In addition, the horizontal and vertical positions of the brackets with respect to the base plate can be adjusted and corrected easily and accurately even if the position of the fork is displaced due to construction errors during construction or uneven settlement of the building. And the load bearing performance of the building can be maintained sufficiently and reliably.
[Brief description of the drawings]
FIG. 1 is a partially cutaway front view of a large pull support structure using a steel bundle according to the present invention.
FIG. 2 is a plan view of a base plate shown crossed by the line II-II in FIG.
FIG. 3 is a perspective view showing a part of the cushioning member in a longitudinal section.
FIG. 4 is an exploded perspective view showing a part of an oversized support structure using a steel bundle according to the present invention.
FIG. 5 is an exploded perspective view showing a part of an oversized support structure using another steel bundle according to the present invention.
FIG. 6 is a partially broken front view of a conventional support structure using a steel bundle.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Base plate 2 Column part 3 Bracket 3a Horizontal part 3b Side plate part 4 1st cylinder part 5 2nd cylinder part 6 Male screw body 7 Nut 8 Bolt 9 Long hole 10 Concrete base 11a, 11b Nut 12 Large drawing 13 Guide groove 14 Buffer Material 15 Guide plate 16 Nail 17 Guide rib 18 Receiving bracket

Claims

A receiving metal fitting is provided at the upper end of the column portion erected on the base plate, and each column portion has a space between a lower first tube portion and an upper second tube portion in which female screw portions having different winding directions are formed on the inner surface. The first male screw part and the second male screw part corresponding to the female screw parts of the first cylindrical part and the second cylindrical part are respectively formed in the lower part and the upper part, and a handle part for rotating operation is provided between the male screw parts. And the lower end of the first cylinder part is attached to the center of the upper surface of the base plate, and the upper end of the second cylinder part is attached to the lower surface of the horizontal part of the receiving metal. Side plate portions are erected on the left and right sides, and a cushioning material is laid on the upper surface of the horizontal portion, and the first cylindrical portion is attached so that the attachment position can be adjusted in the left-right direction with respect to the base plate , and A guide groove extending vertically is formed on the inner surface of the side plate of the bracket, and Extending vertically, a guide plate having a guide rib protruding outward, steel beams rib of the guide plate attached to the side of Obiki is configured to be fitted to the side plate of the guide groove.

The steel bundle according to claim 1, wherein front and rear, left and right grooves are formed on the upper surface of the cushioning material .

A center convex portion protruding upward is provided at the center of the base plate, a long hole extending left and right is provided on the flat surface of the central convex portion, and the screw portion of the bolt projecting upward from the lower surface of the base plate Next, the internal thread portion formed on the inner surface near the lower end of the first tubular portion is screwed together via a nut to attach the first tubular portion to the base plate, and the space between the bolt, the nut and the internal thread portion is loosened. The steel bundle according to claim 1, wherein the left and right positions of the first cylindrical portion relative to the base plate can be adjusted.

A receiving metal fitting is provided at the upper end of the column portion erected on the base plate, and each column portion has a space between a lower first tube portion and an upper second tube portion in which female screw portions having different winding directions are formed on the inner surface. The first male screw part and the second male screw part corresponding to the female screw parts of the first cylindrical part and the second cylindrical part are respectively formed in the lower part and the upper part, and a handle part for rotating operation is provided between the male screw parts. And the lower end of the first cylinder part is attached to the center of the upper surface of the base plate, and the upper end of the second cylinder part is attached to the lower surface of the horizontal part of the receiving metal. is erected side plate portions to the left and right, and is laid the upper surface in the buffer material of the horizontal portion, also attaching the first cylindrical portion, so that adjustable mounting positions in the lateral direction relative to the base plate, further wherein the side plate inner surface of the receiving metal, comprising a guide groove extending vertically Said base plate of manufacturing bundle is fixed by bonding to the concrete base of the building, also extends in the vertical direction, fitted with a guide plate having a guide rib projecting outward on the sides of Obiki, fitted into the guide rib into the guide groove A caulking support structure in which the lower surface and side surfaces of the caulking are supported by the receiving bracket.

The large support structure according to claim 4, wherein front and rear and right and left grooves are formed on an upper surface of the cushioning material .

A central convex portion protruding upward is provided at the center of the base plate in the steel bundle, a long hole extending left and right is provided in a flat portion of the central convex portion, and a screw portion is protruded upward from the lower surface of the base plate. An internal thread portion formed on an inner surface near the lower end of the first tube portion is screwed to a screw portion of the bolt via a nut to attach the first tube portion to the base plate, and the bolt, the nut, and the internal thread portion 5. The large pull support structure according to claim 4, wherein the left and right positions of the first cylindrical portion with respect to the base plate can be adjusted in accordance with the large pull position by loosening the gap.