JPH01226955A - Joining tool for pc concrete member - Google Patents
Joining tool for pc concrete memberInfo
- Publication number
- JPH01226955A JPH01226955A JP5225888A JP5225888A JPH01226955A JP H01226955 A JPH01226955 A JP H01226955A JP 5225888 A JP5225888 A JP 5225888A JP 5225888 A JP5225888 A JP 5225888A JP H01226955 A JPH01226955 A JP H01226955A
- Authority
- JP
- Japan
- Prior art keywords
- members
- bolt
- screwed
- concrete
- nut
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000004567 concrete Substances 0.000 title claims abstract description 38
- 239000011295 pitch Substances 0.000 description 7
- 239000004744 fabric Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 241001274216 Naso Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000011178 precast concrete Substances 0.000 description 1
- 239000011513 prestressed concrete Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Reinforcement Elements For Buildings (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
この発明は、主としてプレハブ基礎の接合に使用される
PCコンクリート部材の接合構造に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a joining structure for PC concrete members used primarily for joining prefabricated foundations.
従来の技術
建物の布基礎を、PCコンクリート(プレキャストコン
クリート)によって成型してこれを現場で設置するもの
においては、設置された各PCコンクリート部材を相互
に接合する必要がある。第7図及び第8図は、このよう
な従来の接合構造を示したもので、布部(1)とフーチ
ング部(2)とからなる所定の大きさの基礎コンクリー
ト(3)に、予めボルト(4)(4)を突出状態で埋設
しておき、これらのボルト(4)(4)へタンバックル
式のナット(5)を螺じ込んで相互に接合することが行
なわれている。しかし、このような接合構造によると、
ポル) (4)(4)が突設しているため、現場への搬
入時や設置時に他の部材に衝突する等して損傷を生ずる
戊れがあり、また、ナット(5)を回動させて螺じ込む
際、各基礎コンクリート(3)(3)を予め離しておい
て相互に近づけるよう移動させなければならず、接合作
業に手間を要するという欠点がある。BACKGROUND OF THE INVENTION When a cloth foundation for a building is formed using precast concrete (PC concrete) and installed on site, it is necessary to join the installed PC concrete members to each other. Figures 7 and 8 show such a conventional joint structure, in which bolts are pre-installed in the foundation concrete (3) of a predetermined size, which consists of a cloth part (1) and a footing part (2). (4) The bolts (4) are buried in a protruding state, and a tongue buckle nut (5) is screwed into these bolts (4) and (4) to connect them to each other. However, according to such a joint structure,
(4) Because (4) protrudes, there is a risk of damage due to collision with other components during transportation to the site or installation, and the nut (5) cannot be rotated. When screwing them together, each of the foundation concretes (3) (3) must be separated in advance and moved closer to each other, which has the disadvantage that the joining work requires time and effort.
そこで、この発明の発明者らは、かかる欠点を解消する
ため、各コンクリート部材にナツトを埋設しておき、そ
の一方のナツトに予め接合用のボルトを後退させた状態
で螺じ込んでおき、各基礎コンクリートをその位置に設
置した後、後退させられていたボルトを突出方向に回動
させることによって相手方のナットへ螺じ込み、これに
よって予めボルトを突出させておく必要がなく、かつ、
接合時の基礎コンクリートの移動作業を不要とした接合
用具を発明し、特願昭62−170690号及び同62
−245214号として出願した。Therefore, in order to solve this problem, the inventors of the present invention buried nuts in each concrete member, and screwed a joining bolt into one of the nuts in advance in a retracted state. After each foundation concrete is placed in its position, the bolt that has been retreated is rotated in the protruding direction and screwed into the other nut, thereby eliminating the need to protrude the bolt in advance, and
Invented a joining tool that made it unnecessary to move foundation concrete during joining, and patent applications Nos. 170690 and 1982
It was filed as No.-245214.
発明が解決しようとする問題点
上記のように、先出願のものにおいては、接合用のボル
トを予め一方のナツトへ後退状に螺じ込んでおき、しか
るのち、これを突出方向に回動させて相手方のナツトへ
螺じ込むものであり、それゆえ、接合時のコンクリート
部材の移動が不要であるのであるが、しかしながら、こ
の場合に予め螺じ込まれた方のナットに対してボルトを
緩めると同時に、他方のナット部材へ螺合させることに
なるから、両ナツト部材のピッチが相互に連続した状態
にないと、螺じ込み掻作を行なうことができない不都合
があり、そのため、このようなピンチを連続させるため
各PCコンクリート部材を非常に正確な位置に設置しな
ければならないという不都合がある。Problems to be Solved by the Invention As mentioned above, in the earlier application, a joining bolt is screwed into one nut in advance in a retracted manner, and then the bolt is turned in a protruding direction. This method eliminates the need to move the concrete members during joining. At the same time, since it is screwed into the other nut member, there is an inconvenience that screwing and scraping cannot be performed unless the pitches of both nut members are continuous with each other. The disadvantage is that each PC concrete member must be placed in a very precise position to ensure continuous pinching.
この発明は、上記先出願のものにおいて、接合用ボルト
部材のピッチを、相手方のナツトに合わせて容易に変更
調節できるようにしたPCコンクリート部材の接合用具
を提供するものである。The present invention provides a joining tool for PC concrete members, which is the same as that of the earlier application, in which the pitch of the joining bolt member can be easily changed and adjusted in accordance with the mating nut.
問題点を解決するための手段
このような目的を達成するため、この発明では、互いに
接合されるPCコンクリート部材(11)の各接合端面
に予め埋設される一対の埋込みナツト(20)と、これ
ら両ナツト部材(20)へその一端を螺じ込まれる一対
のボルト部材(22) (23)と、各ボルト部材(
’22) (23)の他端へその端部を螺合される1
つの連結用ナツト部材(27)とを備え、前記両理込み
ナソ) (20)へ螺じ込まれる各ボルト部材(22)
(23)の螺子(24) (26)方向をともに
同方向とし、連結用ナツト部材(27)へ螺じ込まれる
各ボルト部材(22) (23)の螺子(25)(2
6)方向を相互に逆方向としてあることを特徴とするも
のである。Means for Solving the Problems In order to achieve the above object, the present invention includes a pair of embedded nuts (20) embedded in advance in each joint end face of PC concrete members (11) to be joined together, and A pair of bolt members (22) (23) whose ends are screwed into both nut members (20), and each bolt member (
'22) 1 whose end is screwed to the other end of (23)
each bolt member (22) screwed into the double-barreled naso (20);
The screws (24) and (26) of (23) are in the same direction, and the screws (25) and (2) of each bolt member (22) and (23) are screwed into the connecting nut member (27).
6) It is characterized in that the directions are mutually opposite.
作 用
上記この発明の構成によれば、各ポル) (22)(2
3)部材を連結しているナツト部材(27)を回動させ
ると、両ボルト部材(22) (23)のピンチが変
わるから、これによって、螺じ込まれるべき相手方ナツ
ト部材(20)の螺子ピッチに合わせて変更調節するこ
とが可能である。According to the structure of this invention described above, each port) (22) (2
3) When the nut member (27) that connects the members is rotated, the pinch of both bolt members (22) and (23) changes, so that the thread of the mating nut member (20) to be screwed is changed. It can be changed and adjusted according to the pitch.
実施例
以下、この発明の接合用具を、PCコンクリート基礎の
接合に用いた場合の実施例に基づいて説明する。EXAMPLE Hereinafter, a description will be given based on an example in which the joining tool of the present invention is used for joining PC concrete foundations.
第6図は、この発明の実施例に使用される一対のPCコ
ンクリート部材を示しており、これらのPCコンクリー
ト部材(11) (11)は、それぞれ地中に埋設さ
れるフーチング部(12)とこのフーチング部(12)
の中央より起ち上がる概略丁字形の布部(13)とから
なる、この布部(13)の上端には、互いに接合される
端面において、共に同じ側の半部が切欠(14) (
14)されている。Fig. 6 shows a pair of PC concrete members used in the embodiment of the present invention, and these PC concrete members (11) (11) are respectively connected to a footing part (12) and a footing part (12) to be buried underground. This footing part (12)
A roughly T-shaped cloth part (13) rising from the center of the cloth part (13) has a cutout (14) on the upper end of the cloth part (13), and a half part on the same side of the end surfaces to be joined to each other has a notch (14) (
14) It has been done.
第5図は、この発明の実施例に使用される接合用具であ
って、図において(16)は、互いに対向する一対のフ
ランジ(17) (17)と、両フランジ(17>
(17)の一端部同士を連結するウェブ(18)とか
らなるコの字形の接合プレートであって、鋼板の折曲げ
成形によって一体に成形されている。FIG. 5 shows a joining tool used in an embodiment of the present invention, in which (16) represents a pair of flanges (17) facing each other, and both flanges (17>).
It is a U-shaped joint plate consisting of a web (18) connecting one end of (17) and a web (18), which is integrally formed by bending a steel plate.
フランジ(17) (17)には、それぞれボルト穴
(19) (19)が形成されている。 (20)
(20)は、その内周面に雌螺子(21)を備えた
パイプ状の埋込みナットであり、これらのナット(20
) (20)が、第6図のように、前記切欠(14)
における各PCコンクリート部材(11) (11)
の端面に予め埋設されている。この埋込みナツト(20
) (20)は、その定着性を増すために例えば異径
鉄筋に螺子穴を明けたもの、又は、長ナツトの後部にア
ンカー筋を取り付けたもの等が用いられる。 (22
)(23)は、この発明の一対の連結用ボルトであり、
これらの連結用ポル) (22) (23)のうち外
周に形成される雄螺子は、その一方の連結用ボルト(2
2)においては、その中央部を境として互いに逆方向の
雄螺子(24) (25)が形成され、他方の連結用
ボルト(23)の外周には、その一端から他端まで同方
向で、かつ、前記一方の連結用ボルト(22)の対向す
る端部側の雄螺子(25)と逆方向の雄螺子(26)が
形成されている。即ち、連結用ボルト(22) (2
3)の互いに相手方と反対側の端部側の雄螺子(24)
(26)がともに同方向であって、前記の埋込みナ
ソ) (20) (20)に形成される雌螺子(21
)もこれらと同方向に形成される。Bolt holes (19) (19) are formed in the flanges (17) (17), respectively. (20)
(20) is a pipe-shaped embedded nut with a female screw (21) on its inner peripheral surface;
) (20), as shown in FIG. 6, the notch (14)
Each PC concrete member (11) (11)
It is buried in advance in the end face of. This embedded nut (20
) For (20), in order to increase its stability, for example, reinforcing bars of different diameters with screw holes or long nuts with anchor bars attached to the rear are used. (22
) (23) are a pair of connecting bolts of the present invention,
Of these connecting bolts (22) and (23), the male screw formed on the outer periphery is the one connecting bolt (22).
In 2), male screws (24) and (25) are formed in opposite directions with the center as a boundary, and male screws (24) and (25) are formed on the outer periphery of the other connecting bolt (23) in the same direction from one end to the other end. Further, a male thread (26) is formed in the opposite direction to the male thread (25) on the opposite end side of the one connecting bolt (22). That is, the connecting bolt (22) (2
Male screw (24) on the opposite end of 3)
(26) are both in the same direction, and the female screw (21) formed in (20) (20) is
) are also formed in the same direction as these.
(27)は、再連結用ボルト(22) (23)の対
向端部側に螺じ込まれて、両連結用ポル) (22)
(23)を相互に連結する連結用ナットを示しており
、その内周には、これら連結用ボルト(22) (2
3)の対向端部の雄螺子(25) (26)に合致す
る雌螺子(28) (29)が形成されている。即ち
、この連結用ナフト(27)の内側には、その中間部を
境として互いに逆方向の雌螺子(28) (29)が
形成されている。 (30) (30)は、連結用
ボルト(22)(23)を連結用ナフ) (27)へ螺
じ込んだ状態において、これらの連結用ポル) (22
) (23)の対向端部側の雄螺子部(25) (
26)に螺合される連結用ナット(27)の回り止めナ
ット、(31) (31)は前記フランジ(17)
(17)の締付は用ナツトで、同じく連結用ボルト(
22) (23)の互いに反対側の端部における11
1螺子(24) (26)へ螺合されている。(27) is screwed into the opposite end side of the reconnection bolts (22) and (23), and the reconnection bolts (22)
(23) are shown, and the inner periphery of these connecting bolts (22) (2
Female threads (28) (29) are formed which match the male threads (25) (26) at the opposite ends of 3). That is, female screws (28) and (29) are formed inside the connecting napht (27) in directions opposite to each other with the intermediate portion as a boundary. (30) (30) is a state in which the connecting bolts (22) and (23) are screwed into the connecting nuff (27), and these connecting bolts (22) are screwed into the connecting nuff (27).
) (23) The male thread part (25) on the opposite end side (
(26) is a locking nut for the connecting nut (27), (31), (31) is the flange (17).
(17) is tightened with a connecting nut, and the connecting bolt (
22) 11 at mutually opposite ends of (23)
1 screws (24) and (26).
次に第5図の接合用具を用いたPCコンクリート部材の
接合方法を第1図〜第4図に基づいて説明する。Next, a method for joining PC concrete members using the joining tool shown in FIG. 5 will be explained based on FIGS. 1 to 4.
まず、第1図で示すように、各連結用ナツト(27)の
両端に連結用ポル) (22) (23)を螺じ込み
、かつ、回り止め及び締付はナット(30) (31
)を取り付けた状態で、これら連結用ボルト(22)
(23)の両端を、前記接合プレート(16)におけ
るボルト穴(19) (19)より突出させた状態で
、1方のPCコンクリート部材(11)における切欠部
(14)へ接合プレー) (16)を嵌合させるととも
に、そのフランジ(17)より突出する一方の連結用ポ
ル) (23)の一端を、埋込みナフ) (20)へ螺
じ込んで取り付ける。このような状態で、第3図で示す
ように、その螺じ込まれた連結用ボルト(22)を他方
の連結用ポル) (23)をも一体として1方のPCコ
ンクリート部材(11)に埋設したナット(20)へ略
−杯まで螺じ込む、これにより、他方の連結用ボルト(
22)の先端部が、フランジ(17)におけるボルト穴
(19)内に引き込んだ状態にあって、その他方のPC
コンクリート部材(11)と干渉しないようになってい
る。従って、この第3図で示すように、もう1個のPC
コンクリート部材(11)を所定の位置に設置して、し
かる後、第4図のように、各連結用ボルト(22)(2
3)を一体として回動させ、その他方のPCコンクリー
ト部材(11)におけるす−/ ト(20)へ、連結用
ボルト(22)の先端部を螺じ込む、その際、その螺じ
込まれる方の連結用ボルト(22)の雄螺子(24)の
ピッチが、相手方埋込みナラ) (20)の雌螺子のピ
ッチと合わない場合には、連結用ナツト(27)を回動
させ、前記他方の連結用ボルト(22)に対するもう1
つの連結用ボルト(23)の相対位置を変更させ、これ
によって螺じ込む方向の連結用ポル) (22)と埋込
みナット(20)のピンチを合致させて螺じ込むことが
できる。そして、中央の連結用ナフト(27)が略フラ
ンジ(17) (17)間の中間にきた段階で締付は
ナット<31) (31)を回して、両フランジ(1
7) (17)を、前記の接合端目側へ押し付けるよ
うに締め付けて連結を完了するものである。なお、PC
コンクリート部材(11) (11)間の隙間、及び
、切欠部(14)(14)には、モルタル(32)等を
充填して、これらの接合プレー) (16)及び連結用
ボルト(22)(23)を埋設する。First, as shown in Fig. 1, screw the connecting poles (22) and (23) into both ends of each connecting nut (27), and use the nuts (30) and (31) to prevent rotation and tighten.
) with these connecting bolts (22) attached.
With both ends of (23) protruding from the bolt holes (19) (19) in the joint plate (16), connect the joint plate (16) to the notch (14) in one of the PC concrete members (11). ), and one end of the connecting pole (23) protruding from the flange (17) is screwed into the embedded nuff (20). In this state, as shown in Figure 3, connect the screwed connecting bolt (22) to one PC concrete member (11) together with the other connecting bolt (23). Screw into the buried nut (20) almost all the way to the end, thereby tightening the other connecting bolt (
22) is retracted into the bolt hole (19) in the flange (17), and the other PC
It is designed not to interfere with the concrete member (11). Therefore, as shown in this Figure 3, another PC
After installing the concrete member (11) in a predetermined position, as shown in Fig. 4, each connecting bolt (22) (2
3) as one body, and screw the tip of the connecting bolt (22) into the stud (20) of the other PC concrete member (11). If the pitch of the male thread (24) of one coupling bolt (22) does not match the pitch of the female thread of the other embedded bolt (20), rotate the coupling nut (27) and Another connection bolt (22)
By changing the relative positions of the two connecting bolts (23), it is possible to match the connecting bolt (22) in the screwing direction with the pinch of the embedded nut (20) and screw in. Then, when the center connecting napht (27) is approximately in the middle between the flanges (17) (17), tighten the nut by turning the nut <31 (31).
7) The connection is completed by tightening (17) so as to press it toward the joint end. In addition, PC
The gaps between the concrete members (11) (11) and the notches (14) are filled with mortar (32), etc., and these are joined together (16) and connecting bolts (22). (23) is buried.
発明の効果
以上のように、この発明によれば、予めPCコンクリー
ト部材に埋設されたナツトへボルトを螺じ込んで螺合す
るもので、従来のタンバックル式の接合構造に比較して
、運搬や設置時にボルトが突出していないため、ボルト
の損傷や曲がり等を考慮する必要がなくなり、かつ、ボ
ルトの回動操作を行なうたびにPCコンクリート部材を
移動させる必要がなく、作業が容易で極めて正確に設置
できるという効果が得られる。のみならず、この発明に
おいては、各連結用ボルト部材をナット部材で連結し、
かつ、このナツト部材に螺じ込まれる各ボルト部材の端
部の雄螺子部を相互に逆方向としているから、この連結
用ナツト部材を回転させることによって、各接合用ボル
トの相対ピッチを変更し、相手方PCコンクリート部材
の埋込みナツトのピッチと正確に合致させることができ
るから、各PCコンクリート部材を厳密に正確な位置に
設置する必要がなく、それだけ、より作業が容易となる
効果が得られる。しかも、両コンクリート部材間の間隔
が不正確な場合には、その連結用ナツトを回動させるこ
とで、両者を引き寄せて正確に位置させることが可能と
なる。なお、この発明の実施例で示すように、両PCコ
ンクリート部材間に接合プレートを用いれば、この接合
プレートは、両PCコンクリート部材間の接合部におけ
る剪断力の一部を負担するため、接合強度を増大させる
ことができるという利点がある。Effects of the Invention As described above, according to the present invention, a bolt is screwed into a nut embedded in a prestressed concrete member in advance, and transportation is improved compared to the conventional tongue buckle type joint structure. Since the bolts do not protrude during installation, there is no need to consider bolt damage or bending, and there is no need to move the PC concrete member each time the bolt is rotated, making the work easy and extremely accurate. This has the advantage that it can be installed in In addition, in this invention, each connecting bolt member is connected with a nut member,
In addition, since the male threads at the ends of each bolt member screwed into this nut member are in opposite directions, the relative pitch of each joining bolt can be changed by rotating this connecting nut member. Since it is possible to precisely match the pitch of the embedded nuts of the other PC concrete member, it is not necessary to install each PC concrete member in a strictly accurate position, which makes the work easier. Moreover, if the distance between the two concrete members is inaccurate, by rotating the connecting nut, it is possible to draw them together and position them accurately. As shown in the embodiment of this invention, if a joint plate is used between both PC concrete members, this joint plate will bear a part of the shearing force at the joint between both PC concrete members, so the joint strength will be increased. It has the advantage of being able to increase the
第1図及び第2図は、本発明接合用具を用いた接合方法
の手順を示す要部の斜視図、第3図及び第4図は、同じ
く接合方法の手順を示す要部の縦断面図、第5図は、本
発明接合用具の分解斜視図、第6図は、ナツトを埋設し
たPCコンクリート部材の要部の斜視図、第7図は、従
来のPCコンクリート基礎の接合方法を示す要部の斜視
図、第8図は、同じく接合状態を示す要部の縦断面図で
ある。
(11)・・・PCコンクリート部材、(16)・・・
接合プレート、 (17)・・・フランジ、(18)
・・・ウェブ、 (19)・・・ボルト穴、(20)
・・・埋込みナット、
(22) (23)・・・連結用ボルト、(24)
(25) (26)・・・雄螺子、(27)・・・
連結用ナット。
特 許 出願人 積水ハウス株式会社(ほか1名)1 and 2 are perspective views of the main parts showing the steps of the joining method using the joining tool of the present invention, and FIGS. 3 and 4 are longitudinal sectional views of the main parts also showing the steps of the joining method. , FIG. 5 is an exploded perspective view of the joining tool of the present invention, FIG. 6 is a perspective view of the main part of a PC concrete member in which nuts are embedded, and FIG. FIG. 8 is a longitudinal cross-sectional view of the main part, also showing a joined state. (11)...PC concrete member, (16)...
Joint plate, (17)...flange, (18)
... Web, (19) ... Bolt hole, (20)
... Embedded nut, (22) (23) ... Connection bolt, (24)
(25) (26)...male screw, (27)...
Connection nut. Patent applicant: Sekisui House Co., Ltd. (and one other person)
Claims (1)
面に予め埋設される一対の埋込みナットと、これら両ナ
ット部材へその一端を螺じ込まれる一対のボルト部材と
、各ボルト部材の他端へその端部を螺合される1つの連
結用ナット部材とを備え、前記両埋込みナットへ螺じ込
まれる各ボルト部材の螺子方向をともに同方向とし、連
結用ナット部材へ螺じ込まれる各ボルト部材の螺子方向
を相互に逆方向としてあることを特徴とするPCコンク
リート部材の接合用具。 2、PCコンクリート部材の接合端面に当接される一対
のフランジと、両フランジを連結するウェブとからなる
連結部材と、前記各ボルト部材へ螺合されて上記連結部
材の各フランジを各PCコンクリート部材の接合部端面
へ押し付けるよう締め付けられる一対の締付けナットと
を備えていることを特徴とする特許請求の範囲第1項記
載のPCコンクリート部材の接合用具。[Claims] 1. A pair of embedded nuts embedded in advance in each joint end surface of PC concrete members to be joined to each other, a pair of bolt members whose ends are screwed into both of these nut members, and each bolt one connecting nut member whose end is screwed to the other end of the member, the screw directions of the bolt members screwed into both the embedded nuts are the same, and the screws are screwed into the connecting nut member. A joining tool for PC concrete members, characterized in that the screw directions of the bolt members to be inserted are opposite to each other. 2. A connecting member consisting of a pair of flanges that come into contact with the joint end surfaces of the PC concrete members, and a web that connects both flanges, and a connecting member that is screwed onto each of the bolt members to connect each flange of the connecting member to each PC concrete member. The joining tool for PC concrete members according to claim 1, further comprising a pair of tightening nuts that are tightened so as to press against the end faces of the joining parts of the members.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5225888A JPH01226955A (en) | 1988-03-04 | 1988-03-04 | Joining tool for pc concrete member |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5225888A JPH01226955A (en) | 1988-03-04 | 1988-03-04 | Joining tool for pc concrete member |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH01226955A true JPH01226955A (en) | 1989-09-11 |
Family
ID=12909729
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5225888A Pending JPH01226955A (en) | 1988-03-04 | 1988-03-04 | Joining tool for pc concrete member |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH01226955A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09287151A (en) * | 1996-04-23 | 1997-11-04 | Natl House Ind Co Ltd | Pc foundation connection structure |
-
1988
- 1988-03-04 JP JP5225888A patent/JPH01226955A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09287151A (en) * | 1996-04-23 | 1997-11-04 | Natl House Ind Co Ltd | Pc foundation connection structure |
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