JP2868129B2 - Connecting device for precast members - Google Patents
Connecting device for precast membersInfo
- Publication number
- JP2868129B2 JP2868129B2 JP2051158A JP5115890A JP2868129B2 JP 2868129 B2 JP2868129 B2 JP 2868129B2 JP 2051158 A JP2051158 A JP 2051158A JP 5115890 A JP5115890 A JP 5115890A JP 2868129 B2 JP2868129 B2 JP 2868129B2
- Authority
- JP
- Japan
- Prior art keywords
- pin member
- precast
- bolt
- pin
- insertion hole
- 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.)
- Expired - Fee Related
Links
Landscapes
- Lining And Supports For Tunnels (AREA)
Description
本発明は、プレキャスト部材の連結装置に関するもの
であり、特に、坑道覆工体の連結装置に於て、ボルト結
合とピン結合の利点を融合させて構成した坑道覆工体の
連結装置に関するものである。The present invention relates to a connection device for a precast member, and more particularly to a connection device for a tunnel lining body that combines the advantages of bolt connection and pin connection in a connection device for a tunnel lining body. is there.
従来の此種覆工体の連結装置であって、ボルト結合方
式を別紙添付図面の第４図乃至第６図に従って説明す
る。第４図は従来の鉄筋コンクリート覆工体に多く用い
られている継手金具部位を示す解説縦断側面図であっ
て、第５図は第４図の継手金具を用いた鉄筋コンクリー
ト覆工体の斜視図、第６図は継手金具をボルトにて締結
した状態を示す一部切欠縦断側面図である。 図に於て、１は鉄筋コンクリート覆工体であって円周
方向を弧状に形成され、該鉄筋コンクリート覆工体１に
は坑道の軸芯方向の両側端面に継手金具の平鋼板2,2…
が取付けられている。そして、この平鋼板２両側内面に
リブ3,3が内側に向って突設せられ、更に、該リブ3,3の
上下に夫々アンカー材4,4が突設せられている。そし
て、対峙するリブ3,3間に空間部を形成してボルト締付
操作を可能ならしめる如く、前記アンカー材4,4…を鉄
筋コンクリート覆工体１内に埋設して固定してある。更
に、前記平鋼板２には隣接して対峙する平鋼板２間をボ
ルト５が挿通できるボルト孔６が開穿されている。そこ
で、隣接せる鉄筋コンクリート覆工体1,1の前記ボルト
孔6,6にボルト５が挿通され、ナット７を螺着して締結
し坑道軸芯方向の隣接せる鉄筋コンクリート覆工体1,1
相互を結合せしめるのである。更に、隣接せる該鉄筋コ
ンクリート覆工体1,1の円周方向の両端面も同様手段に
て結合していた。 次に、従来の覆工体の連結装置としてピン結合方式が
知られている。之は、一方の覆工体の側端部に先端部が
細くなるように斜欠した接合ピンを固定し、他方の覆工
体の側端部にソケットを設け、該ソケット内に前記接合
ピンの嵌合孔を有するばね鋼板を円周方向に摺動自在に
緩挿すると共に、前記嵌合孔周辺部に多数の切目を設け
たものである。そこで、片側の前記接合ピンを有する覆
工体を前記ソケットを設けた覆工体とを結合するとき
は、前記接合ピンを対峙する嵌合孔に挿入して両者を結
合するのである。斯くして、双方の覆工体は容易に結合
せしめることができる。A conventional connection device for a lining body of this type, in which a bolt connection method is described with reference to FIGS. FIG. 4 is an explanatory longitudinal sectional side view showing a joint fitting part frequently used in a conventional reinforced concrete lining body, and FIG. 5 is a perspective view of a reinforced concrete lining body using the fitting fitting of FIG. FIG. 6 is a partially cutaway vertical sectional side view showing a state in which the fitting is fastened by bolts. In the figure, reference numeral 1 denotes a reinforced concrete lining body which is formed in an arc shape in the circumferential direction. The reinforced concrete lining body 1 has flat steel plates 2, 2,...
Is installed. Further, ribs 3, 3 are provided on the inner surfaces of both sides of the flat steel plate 2 inwardly, and anchor members 4, 4 are provided above and below the ribs 3, 3, respectively. The anchor members 4, 4... Are embedded and fixed in the reinforced concrete lining 1 so that a space is formed between the ribs 3, 3 facing each other so that a bolt tightening operation can be performed. Further, the flat steel plate 2 is provided with a bolt hole 6 through which the bolt 5 can be inserted between the adjacent flat steel plates 2. Then, bolts 5 are inserted into the bolt holes 6, 6 of the adjacent reinforced concrete lining bodies 1, 1 and nuts 7 are screwed and fastened to make the adjacent reinforced concrete lining bodies 1, 1 in the shaft axis direction.
They join each other. Furthermore, both end faces in the circumferential direction of the adjacent reinforced concrete lining bodies 1 and 1 were connected by the same means. Next, a pin connection system is known as a conventional connection device for a lining body. In this case, a joining pin which is obliquely cut so that the tip is thinner is fixed to a side end of one lining body, a socket is provided at a side end of the other lining body, and the joining pin The spring steel plate having the fitting hole is loosely slidably inserted in the circumferential direction, and a number of cuts are provided around the fitting hole. Therefore, when connecting the lining body having the joining pin on one side to the lining body provided with the socket, the joining pin is inserted into the facing fitting hole to join the two. In this way, the two linings can be easily connected.
前記従来型のうち、ボルト方式は結合が強固であるが
次の欠陥を有する。即ち、隣接する鉄筋コンクリート覆
工体1,1の継手金具である平鋼板2,2をボルト５にて結合
するときには、坑道軸心方向又は円周方向の鉄筋コンク
リート覆工体１の角ボルト孔6,6を夫々合せて組立てら
れる。依って、該ボルト５は挿入できれば、該ボルト孔
6,6の孔心の合致如何を問わずナット７にて螺着され双
方の平鋼板2,2…が結合されるのである。 そこで、例えば第６図に示す如く、双方のボルト孔6,
6の孔芯が不一致であるとき、ボルト５を該ボルト孔6,6
に挿入して双方の平鋼板2,2を結合するときは、該ボル
ト５に過大な曲げ応力が発生し引張抗力の低下となり、
又、各鉄筋コンクリート覆工体1,1間にズレが生じて矯
正できず、更に、該ズレを矯正する時に生じる剪断力に
抵抗する強度も低下する。その為、鉄筋コンクリート覆
工体の前記継手部位が本来有すべき締結力が弱くなり、
継手部位剛性に低下を来して止水効率が悪化するばかり
でなく、鉄筋コンクリート覆工体としての変化が大きく
なって地盤沈下の原因となり、更に、後続の鉄筋コンク
リート覆工体の組立施工性をも阻害する恐れがあり、組
立完成後に於て継手部位付近の二次覆工コンクリートに
亀裂が生じ易いのである。 又、前記ピン結合方式に於ては、前記ボルト挿通孔の
孔芯は自己調芯作用が働いて前記孔芯不一致に基く欠陥
は解消できるが、一旦、双方の覆工体を結合したときに
は、ばね鋼板のピン挿通孔の周辺部に多数設けた切目が
ピンに喰込み、之を解消しようとしても破壊しない限り
該ピンは離脱できない。一方、該ピン結合は芯合せ並び
に結合操作は容易であるが、初期締結力が無く、又、結
合力はボルト方式に比して弱い。そこで、ボルト方式並
びにピン方式の有する夫々の欠陥を除去し、双方の有す
る夫々の利点を融合してプレキャスト部材を結合せしめ
ると同時に、ピン部材をプレキャスト部材に強固に固設
し、且つ、該プレキャスト部材と隣接せる他方のプレキ
ャスト部材の一側面に設けたボルト操作用空間部のスペ
ースを可及的に小さくして、該プレキャストの剛性を高
め、そして、連結せられるプレキャストの変形を少く
し、更に、変形の累積をなくするために解決せられるべ
き技術的課題が生じてくるのであり、この発明は該課題
を解決することを目的とする。Among the conventional types, the bolt type has a strong connection but has the following defects. That is, when the flat steel plates 2, 2 which are the joint fittings of the adjacent reinforced concrete linings 1, 1 are joined by the bolts 5, the square bolt holes 6, 6 of the reinforced concrete lining 1 in the shaft axis direction or the circumferential direction are used. 6 can be assembled together. Therefore, if the bolt 5 can be inserted, the bolt hole
Regardless of whether the holes 6 and 6 match, the nuts 7 are screwed together and the two flat steel plates 2 are joined together. Therefore, for example, as shown in FIG.
When the hole centers of the holes 6 do not match, the bolt 5 is inserted into the bolt holes 6,6.
When the two flat steel plates 2 are joined by inserting them into the bolt 5, an excessive bending stress is generated in the bolt 5 and the tensile drag is lowered.
In addition, a displacement occurs between the reinforced concrete linings 1 and 1 and cannot be corrected, and furthermore, a strength against a shearing force generated when the displacement is corrected decreases. For this reason, the joint strength that the joint part of the reinforced concrete lining body originally has becomes weak,
Not only does the rigidity of the joints decrease, the water stoppage efficiency deteriorates, but also the change as a reinforced concrete lining increases, causing ground subsidence, and further improving the assemblability of the subsequent reinforced concrete lining. There is a risk that the secondary lining concrete near the joint will be cracked after assembly is completed. Further, in the pin connection method, the hole center of the bolt insertion hole is self-aligning, and the defect based on the hole center mismatch can be eliminated, but once the two lining bodies are connected, A large number of cuts formed around the pin insertion hole of the spring steel plate bite into the pin, and even if the pin is to be eliminated, the pin cannot be removed unless it is broken. On the other hand, the pin connection is easy in centering and connection operation, but has no initial fastening force, and the connection force is weaker than that of the bolt method. Therefore, the respective defects possessed by the bolt method and the pin method are removed, and the advantages of both are combined to combine the precast member, and at the same time, the pin member is firmly fixed to the precast member, and the precast The space of the bolt operation space provided on one side of the other precast member adjacent to the member is made as small as possible, the rigidity of the precast is increased, and the deformation of the connected precast is reduced. Therefore, there arises a technical problem to be solved in order to eliminate the accumulation of deformation, and an object of the present invention is to solve the problem.
この発明は上記目的を達成せんとして提案せられたも
のであり、プレキャスト部材の一側に、先端部を先細り
の円錐台部に形成し、且つ、該先端部の前面より後方へ
向って螺設されている袋ネジを有するピン部材を埋設す
ると共に、該ピン部材の前記先端部、及び、該先端部の
根部側に連設され、且つ、対向する継手部材の板厚より
やや小巾に形成されると共に、ピン部材挿入孔の孔径よ
り僅かに小径に形成された円筒部を該プレキャスト部材
の側面より突設し、且つ、前記先端部及び円筒部を該プ
レキャスト部材と隣接せる他方のプレキャスト部材の一
側面に設けたピン部材挿入孔に挿入するとき、該円錐台
部が該ピン部材挿入孔にガイドされて自動的に調芯され
乍ら該ピン部材挿入孔に挿入されて、該円錐台部の前面
が該ピン部材挿入孔の背面に形成してあるボルト操作用
空間部に臨み、更に、該他方のプレキャスト部材側の前
記ボルト操作用空間部より前記ピン部材の袋ネジにボル
トを螺着して双方のプレキャスト部材を緊結するプレキ
ャスト部材の連結装置を提供せんとするものである。The present invention has been proposed to achieve the above object, and has a tip portion formed into a tapered frustoconical portion on one side of a precast member, and is screwed rearward from a front surface of the tip portion. A pin member having a cap screw is embedded and formed at the tip end of the pin member, and at the root side of the tip end, and formed to have a width slightly smaller than the plate thickness of the opposed joint member. The other precast member which has a cylindrical portion formed to have a diameter slightly smaller than the diameter of the pin member insertion hole from the side surface of the precast member, and which has the tip portion and the cylindrical portion adjacent to the precast member. When being inserted into a pin member insertion hole provided on one side surface, the truncated cone portion is inserted into the pin member insertion hole while being automatically aligned while being guided by the pin member insertion hole, and the truncated cone is inserted. The front of the part is the pin member insertion hole It faces the bolt operation space formed on the back surface, and further, a bolt is screwed into the cap screw of the pin member from the bolt operation space on the other precast member side to tighten the two precast members. It is intended to provide a connecting device for a precast member.
本発明のプレキャスト部材の組立施工の際、隣接して
結合せられるべき双方のプレキャスト部材のうち、片方
のプレキャスト部材に先端部が突設されているピン部材
は、該先端部が先細りの円錐台部に形成されており、且
つ、該先端部の根部側には対向する継手部材の板厚より
やや小巾に形成された円筒部が連設されており、更に、
該プレキャスト部材と隣接せる他方のプレキャスト部材
の一側面には前記ピン部材挿入孔を設け、そして、該ピ
ン部材挿入孔の背面にボルト操作用空間部が設けられて
いるので、之等相互に隣接して結合せられるプレキャス
ト部材の前記片方のピン部材の先端部及び円筒部を前記
他方の覆工体のピン部材挿入孔に挿入してその背面のボ
ルト操作用空間部へ、該ピン部材の円錐台部の前面を臨
ませるのである。このとき、ピン部材の先端部は先細り
の円錐台部に形成されているので該ピン部材の先端部を
ピン部材挿入孔に押込めば、該円錐台部が該ピン部材挿
入孔にガイドされて容易に調芯できると同時に該ピン部
材挿入孔には前記円筒部が当接し、そして、該ピン部材
の先端部がピン部材挿入孔から内部に挿入されることに
なるから該ピン部材の挿入は極めて容易且つ確実に行わ
れる。 而して、該ピン部材はその先端部が、該先端部の前面
より後方へ向って螺設されている袋ネジに形成されてい
るため、前述せる如く該ピン部材の円錐台部をピン部材
挿入孔に挿入し、そして、該円錐台部の前面をボルト操
作用空間部に臨ませれば、該ボルト操作用空間部より前
記袋ネジ部に螺合せられるボルトをワッシャを介して挿
入し乍ら該袋ネジ部に螺着して該ボルトを緊締し、そし
て、双方のプレキャスト部材を従来のボルト方式と同様
に強固に連結することができる。 斯くの如く、該ピン部材は前記先端部の円錐台部及び
円筒部を除き、殆ど該プレキャスト部材に埋設されてい
るのであるから、該ピン部材は該プレキャスト部材に剛
性的に固定され、且つ、該プレキャスト部材自体も対曲
げ、軸力、推力に対する抵抗力が向上するのである。 又、該ピン部材の前記円錐台部を他方のプレキャスト
のピン部材挿入孔に挿入するとき、プレキャストの連結
部位の目ずれがなくなり、更に、前記ボルト操作用空間
部は、可及的にそのスペースを狭く形成できるため、該
ボルト操作用空間部を有するプレキャスト部材の剛性も
向上し、連結された構造体の変形も少なく変形の累積も
なくなる。更に、前記円筒部がピン部材挿入孔に接触す
ることになるので、継手部の剪断力に対する耐力も増大
する。At the time of assembling the precast member of the present invention, of the two precast members to be joined adjacently, a pin member having a tip portion projecting from one of the precast members is a truncated cone having a tapered tip portion. And a cylindrical portion formed with a width slightly smaller than the plate thickness of the opposed joint member is continuously provided on the root side of the distal end portion.
The pin member insertion hole is provided on one side surface of the other precast member adjacent to the precast member, and a bolt operation space portion is provided on the back surface of the pin member insertion hole. The tip and the cylindrical portion of the one pin member of the precast member to be joined together are inserted into the pin member insertion hole of the other lining body, and the cone of the pin member is inserted into the bolt operating space on the back surface. It faces the front of the base. At this time, since the tip of the pin member is formed in a tapered truncated cone, if the tip of the pin member is pushed into the pin member insertion hole, the truncated cone is guided by the pin member insertion hole. At the same time as the centering can be easily performed, the cylindrical portion comes into contact with the pin member insertion hole, and the tip of the pin member is inserted into the pin member insertion hole. Very easily and reliably. Since the tip of the pin member is formed as a cap screw screwed rearward from the front surface of the tip portion, the frusto-conical portion of the pin member is connected to the pin member as described above. If the front surface of the truncated cone portion faces the bolt operation space portion, the bolt to be screwed into the cap screw portion from the bolt operation space portion is inserted through the washer through the washer. Then, the bolt is tightened by screwing to the cap screw portion, and both precast members can be connected firmly as in the conventional bolt system. As described above, since the pin member is almost buried in the precast member except for the truncated cone portion and the cylindrical portion at the distal end, the pin member is rigidly fixed to the precast member, and The precast member itself also has improved resistance to bending, axial force, and thrust. Further, when the truncated cone portion of the pin member is inserted into the pin member insertion hole of the other precast, the misalignment of the connecting portion of the precast is eliminated, and the space for bolt operation is as small as possible in the space. Can be formed narrower, the rigidity of the precast member having the bolt operation space portion is also improved, and the connected structure is less deformed and the deformation is not accumulated. Further, since the cylindrical portion comes into contact with the pin member insertion hole, the joint portion has an increased strength against shearing force.
以下、本発明の一実施例を第１図乃至第３図に従って
詳述する。尚、説明の都合上、従来公知に属する構成及
び作用も同時に説明し、対象部分は同一符号を用いる。
第１図は本発明に用いる継手装置を備えた鉄筋コンクリ
ート覆工体10の斜視図である。同図に於て、該鉄筋コン
クリート覆工体10は円周方向が弧状に形成され、該円周
方向両端面に円周方向に於て隣接の鉄筋コンクリート覆
工体10とボルト結合するための継手11,11…が設けられ
ている。この継手11,11…は従来型のものであり、夫々
その内部側にボルト操作用空間部11a,11a…が設けられ
ると共に、該継手11,11…には夫々ボルト孔11b,11b…が
開穿され、一方の鉄筋コンクリート覆工体10の各ボルト
操作用空間部11a,11a…よりボルトを挿入し、他方の鉄
筋コンクリート覆工体10の各ボルト操作用空間部11a,11
aを介してナットを螺着して円周方向隣接の鉄筋コンク
リート覆工体10,10を結合する。 更に、坑道の軸方向の継手部材12,13について説明す
る。前記鉄筋コンクリート覆工体10の軸方向一側には従
来型の継手11と同様に継手部材12,12…が固設されると
共に、後述のピン部材挿入孔12a,12a…が夫々開穿され
ると共に該継手部材12,12…の内側面はボルト操作用空
間部12b,12b…が夫々設けられている。又、該鉄筋コン
クリート覆工体10の軸方向他側面には継手部材13の一部
を構成するピン部材13a,13a…が前記他方の継手部材12,
12に夫々対応する位置に固設されている。 而して、前記ピン部材13aの固設手段を第２図に従っ
て説明する。第２図（ａ）は鉄筋コンクリート覆工体10
の一側に固設され、ピン部材挿入孔12aを有する継手部
材12の縦断面図であり、同図（ｂ）は該ピン部材挿入孔
12aに嵌挿されるピン部材13aを突設した継手部材13を示
す縦断面図である。而して、同図（ｂ）に於て前記鉄筋
コンクリート覆工体10の一側に、ピン部材13aをアンカ
ー材13dを用いて埋設し、その先端部を先細りの円錐台
部13bに形成すると共に該先端部の前面より後方へ向っ
て螺設されている袋ネジ13cに形成し、更に、該円錐台
部13bの根部側に前記継手部材12の板厚よりやや小巾に
形成された円筒部13eが連設され、そして、該先端部及
び円筒部13eを該鉄筋コンクリート覆工体10の一側面よ
り突設してある。尚、図中符号10aは裏込注入孔を示
す。 この発明の一実施例は叙述せる如き構成を有するの
で、例えば坑道の軸方向の一側に設けられた鉄筋コンク
リート覆工体10のピン部材13a,13a…の先端部の円錐台
部13b,13b…及び円筒部13e,13e…を、該円錐台部13b,13
b…に退治する隣接の鉄筋コンクリート覆工体10に設け
られたピン部材挿入孔12a,12a…に嵌挿し、そして、該
円筒部13e,13e…を該ピン部材挿入孔12a,12a…に夫々当
接し、更に、該円錐台部の前面を該ピン部材挿入孔12a,
12a…の背面に設けられているボルト操作用空間部12b,1
2b…に臨ませる。然るときは、該ピン部材13a,13a…の
前記円錐台部13b,13b…がピン部材挿入孔12a,12a…にガ
イドされて自動的に調芯され乍ら各ピン部材13a,13a…
は該ピン部材挿入孔12a,12a…に極めて円滑容易に挿入
される。従って、特別な芯合せ操作が不要となる。そし
て、該ピン部材13a,13a…の円錐台部13b,13b…の夫々の
前面はピン部材挿入孔12a12a…の背面に形成されている
ボルト操作用空間部12b,12b…に臨んでいるので、該ボ
ルト操作用空間部12b,12b…から、該円錐台部13b,13b…
の前面よりピン部材13a,13a…に設けた袋ネジ13c,13c…
にボルト14,14…をワッシャ15,15を介して螺合して緊締
する。然るときは、隣接せる双方の鉄筋コンクリート覆
工体10,10は極めて強固に結合され、作業性も向上す
る。Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS. For convenience of explanation, the configuration and operation belonging to the related art are also described at the same time, and the same reference numerals are used for the target parts.
FIG. 1 is a perspective view of a reinforced concrete lining body 10 provided with a joint device used in the present invention. In FIG. 1, the reinforced concrete lining body 10 is formed in an arc shape in the circumferential direction, and joints 11 for bolting to the reinforced concrete lining body 10 adjacent to the both circumferential end faces in the circumferential direction. , 11 ... are provided. The joints 11, 11,... Are of a conventional type. Bolt operation spaces 11a, 11a,... Are respectively provided inside the joints, and bolt holes 11b, 11b. A bolt is inserted from each of the bolt operating spaces 11a, 11a,... Of one reinforced concrete lining body 10, and each of the bolt operating spaces 11a, 11 of the other reinforced concrete lining body 10 is inserted.
A nut is screwed through a to join the reinforced concrete linings 10, 10 adjacent in the circumferential direction. Further, the joint members 12, 13 in the axial direction of the tunnel will be described. Joint members 12, 12,... Are fixed to one side of the reinforced concrete lining body 10 in the axial direction, similarly to the conventional joint 11, and pin member insertion holes 12a, 12a. Are provided with bolt operation spaces 12b, 12b,... On the inner surfaces of the joint members 12, 12,. Also, on the other side in the axial direction of the reinforced concrete lining body 10, pin members 13a, 13a,.
They are fixed at positions corresponding to 12 respectively. The means for fixing the pin member 13a will be described with reference to FIG. FIG. 2 (a) shows a reinforced concrete lining 10
FIG. 10 is a longitudinal sectional view of a joint member 12 fixedly provided on one side and having a pin member insertion hole 12a, and FIG.
FIG. 9 is a longitudinal sectional view showing a joint member 13 in which a pin member 13a inserted into 12a is projected. Thus, in FIG. 2B, a pin member 13a is buried on one side of the reinforced concrete lining body 10 by using an anchor material 13d, and its tip is formed into a tapered frustoconical portion 13b. A cylindrical portion formed on a cap screw 13c screwed rearward from the front surface of the tip portion, and further formed on the root side of the frustoconical portion 13b with a width slightly smaller than the thickness of the joint member 12. The reinforced concrete lining body 10 protrudes the tip and the cylindrical portion 13e from one side surface. Note that reference numeral 10a in the drawing denotes a back-filling injection hole. Since one embodiment of the present invention has a configuration as described above, for example, the truncated cone portions 13b, 13b,... Of the tip portions of the pin members 13a, 13a,. And the cylindrical portions 13e, 13e.
are inserted into the pin member insertion holes 12a, 12a,... provided in the adjacent reinforced concrete lining body 10 which is extinguished at b, and the cylindrical portions 13e, 13e. And further, the front surface of the truncated cone portion is fixed to the pin member insertion hole 12a,
Bolt operation space 12b, 1 provided on the back of 12a ...
2b ... In this case, while the truncated cone portions 13b, 13b... Of the pin members 13a, 13a... Are guided by the pin member insertion holes 12a, 12a.
Are inserted very smoothly into the pin member insertion holes 12a. Therefore, no special centering operation is required. Since the front surfaces of the truncated cone portions 13b, 13b of the pin members 13a, 13a, ... face the bolt operation space portions 12b, 12b, ... formed on the back surface of the pin member insertion holes 12a12a, respectively. .. From the bolt operation spaces 12b, 12b,.
From the front surface of the pin members 13a, 13a ... provided on the pin members 13a, 13a ...
Are screwed together with washers 15, 15 to tighten them. In that case, the two adjacent reinforced concrete linings 10, 10 are extremely firmly connected, and workability is also improved.
【発明の効果】 本発明は叙述せる一実施例に於て詳述せる如く、従来
のプレキャスト部材の連結方式であるボルト方式とピン
方式とが夫々有している欠陥を解消でき、そして、双方
の有している利点を合理的に融合した為、プレキャスト
部材の連結作業を極めて容易迅速に行うことができると
共に、ロボットによる自己組立も実施可能となり、施工
時間の短縮化と相俟ってコストダウンにも寄与できるこ
とは当然である。更に、本発明は該ピン部材は前記先端
部の円錐台部及び円筒部を除き、殆ど該プレキャスト部
材に埋設されているのであるから、該ピン部材は該プレ
キャスト部材に剛性的に固定され、且つ、該プレキャス
ト部材自体も対曲げ、軸力、推力に対する抵抗力が向上
するのである。 又、該ピン部材の前記円錐台部を他方のプレキャスト
のピン部材挿入孔に挿入するとき、プレキャストの連結
部位の目ずれがなくなり、更に、前記ボルト操作用空間
部は、可及的にそのスペースを狭く形成できるため、該
ボルト操作用空間部を有するプレキャスト部材の剛性も
向上し、連結された構造体の変形も少なく変形の累積も
なくなる等、正に著大なる効果を奏する発明である。As will be described in detail in one embodiment described above, the present invention can eliminate the defects of the conventional bolt connection method and the pin connection method which are the connection methods of the precast members, and can solve both problems. Rationally combined with the advantages of the system, the precast members can be connected extremely easily and quickly, and self-assembly by a robot can be carried out. Of course, it can also contribute to down. Further, in the present invention, since the pin member is almost buried in the precast member except for the frusto-conical portion and the cylindrical portion at the distal end, the pin member is rigidly fixed to the precast member, and The precast member itself also has improved resistance to bending, axial force and thrust. Further, when the truncated cone portion of the pin member is inserted into the pin member insertion hole of the other precast, the misalignment of the connecting portion of the precast is eliminated, and the space for bolt operation is as small as possible in the space. Can be formed to be narrow, the rigidity of the precast member having the bolt operation space portion is also improved, and the connected structure has little deformation and there is no accumulation of deformation.
第１図乃至第３図は本発明の実施例を示し、第１図は本
発明の継手部材を用いた鉄筋コンクリート覆工体の斜視
図、第２図（ａ）（ｂ）は鉄筋コンクリート覆工体の連
結前の解説縦断面図、第３図は第２図の覆工体の連結状
態を示す解説縦断側面図である。第４図乃至第６図は従
来のボルト方式を示し、第４図は継手金具部位の解説縦
断側面図、第５図は第４図の継手金具を用いた鉄筋コン
クリート覆工体の斜視図、第６図は継手金具をボルトに
て締結した状態を示す一部切欠縦断側面図である。 10……鉄筋コンクリート覆工体 12,13……継手部材 12a……ピン部材挿入孔 12b……ボルト操作用空間部 13a……ピン部材 13b……円錐台部 13c……袋ネジ 13e……円筒部 14……ボルト1 to 3 show an embodiment of the present invention. FIG. 1 is a perspective view of a reinforced concrete lining using the joint member of the present invention, and FIGS. 2 (a) and 2 (b) are reinforced concrete linings. FIG. 3 is an explanatory longitudinal sectional side view showing a connected state of the lining body of FIG. 2 before connection. 4 to 6 show a conventional bolt method, FIG. 4 is a longitudinal sectional side view of a joint fitting, and FIG. 5 is a perspective view of a reinforced concrete lining using the fitting shown in FIG. FIG. 6 is a partially cutaway longitudinal sectional side view showing a state where the joint fitting is fastened by bolts. 10 ... Reinforced concrete lining 12,13 ... Coupling member 12a ... Pin member insertion hole 12b ... Bolt operation space 13a ... Pin member 13b ... Frustoconical part 13c ... Ball screw 13e ... Cylinder part 14 ... bolt
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) E21D ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 6 , DB name) E21D
Claims (1)
りの円錐台部に形成し、且つ、該先端部の前面より後方
へ向って螺設されている袋ネジを有するピン部材を埋設
すると共に、該ピン部材の前記先端部、及び、該先端部
の根部側に連設され、且つ、対向する継手部材の板厚よ
りやや小巾に形成されると共に、ピン部材挿入孔の孔径
より僅かに小径に形成された円筒部を該プレキャスト部
材の側面より突設し、且つ、前記先端部及び円筒部を該
プレキャスト部材と隣接せる他方のプレキャスト部材の
一側面に設けたピン部材挿入孔に挿入するとき、該円錐
台部が該ピン部材挿入孔にガイドされて自動的に調芯さ
れ乍ら該ピン部材挿入孔に挿入されて、該円錐台部の前
面が該ピン部材挿入孔の背面に形成してあるボルト操作
用空間部に臨み、更に、該他方のプレキャスト部材側の
前記ボルト操作用空間部より前記ピン部材の袋ネジにボ
ルトを螺着して双方のプレキャスト部材を緊結すること
を特徴とするプレキャスト部材の連結装置。1. A pin member having a tip portion formed into a tapered frustoconical portion and having a cap screw screwed rearward from a front surface of the tip portion is embedded on one side of the precast member. At the same time, the tip portion of the pin member and the tip portion are connected to each other and are formed to have a width slightly smaller than the plate thickness of the opposed joint member and slightly smaller than the diameter of the pin member insertion hole. And a cylindrical portion having a small diameter is protruded from a side surface of the precast member, and the distal end portion and the cylindrical portion are inserted into a pin member insertion hole provided on one side surface of the other precast member adjacent to the precast member. At this time, the truncated cone portion is guided into the pin member insertion hole, is automatically aligned, and is inserted into the pin member insertion hole, so that the front surface of the truncated cone portion is on the back surface of the pin member insertion hole. Facing the formed bolt operation space, The coupling device of the precast member, characterized by Tightened the bag screws to be screwed a bolt both precast members of said pin member from said bolt operating space of said other precast member side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2051158A JP2868129B2 (en) | 1990-03-02 | 1990-03-02 | Connecting device for precast members |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2051158A JP2868129B2 (en) | 1990-03-02 | 1990-03-02 | Connecting device for precast members |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03253697A JPH03253697A (en) | 1991-11-12 |
| JP2868129B2 true JP2868129B2 (en) | 1999-03-10 |
Family
ID=12879019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2051158A Expired - Fee Related JP2868129B2 (en) | 1990-03-02 | 1990-03-02 | Connecting device for precast members |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2868129B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4570819B2 (en) * | 2001-07-02 | 2010-10-27 | 石川島建材工業株式会社 | Segment joint structure |
| JP2005226359A (en) * | 2004-02-13 | 2005-08-25 | Taisei Corp | Joining method for segments and joint structure |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5825397U (en) * | 1981-08-11 | 1983-02-17 | 日本プレスコンクリ−ト株式会社 | Concrete member joining equipment |
| JPH0230898A (en) * | 1988-07-19 | 1990-02-01 | Kumagai Gumi Co Ltd | Connector for tunnel covering work |
-
1990
- 1990-03-02 JP JP2051158A patent/JP2868129B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03253697A (en) | 1991-11-12 |
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