JPH05163702A - Method and apparatus for tensing post-tension pc material - Google Patents

Method and apparatus for tensing post-tension pc material

Info

Publication number
JPH05163702A
JPH05163702A JP3333198A JP33319891A JPH05163702A JP H05163702 A JPH05163702 A JP H05163702A JP 3333198 A JP3333198 A JP 3333198A JP 33319891 A JP33319891 A JP 33319891A JP H05163702 A JPH05163702 A JP H05163702A
Authority
JP
Japan
Prior art keywords
tension
fixing plate
fixing
concrete
tension member
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.)
Granted
Application number
JP3333198A
Other languages
Japanese (ja)
Other versions
JPH0781241B2 (en
Inventor
Takashi Kaneko
隆 金子
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PS Co Ltd
Original Assignee
PS Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by PS Co Ltd filed Critical PS Co Ltd
Priority to JP3333198A priority Critical patent/JPH0781241B2/en
Publication of JPH05163702A publication Critical patent/JPH05163702A/en
Publication of JPH0781241B2 publication Critical patent/JPH0781241B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

PURPOSE:To give a tension to PC tension members in narrow spaces for tension in case where it is impossible to turn the wedges connected with fixing plates in the prestressed concrete tension member subjected to post tension. CONSTITUTION:In constructing PC pavement using carbon fiber cables 3 as tension members, carbon fibre cables 3 are fixed to a disc-shaped fixing plate 4, and the plate 4 is tensed until a given induced stress is reached in the tension member by repeating temporary support action by an insert metal 23 by dragging the fixing plate 4 by a small distance. Two halved hollow cylindrical fixing parts 4 are put between the fixing plate 4 and the end 5 of the concrete 2 to fix the fixing plate 4.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、ポストテンションPC
緊張材の緊張方法及びその装置に関する。
BACKGROUND OF THE INVENTION The present invention relates to a post tension PC.
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of tensioning a tension member and an apparatus thereof.

【0002】[0002]

【従来の技術】ポストテンション方式のプレストレスト
コンクリートにおいては、コンクリート構造物の設置現
場においてPC緊張材を緊張するが、この場合、次のよ
うな条件下で施工しなければならない場合がある。 a)PC緊張材がPC鋼線やカーボンファイバケーブル
などであって掴み替えて緊張することが適切でない。
2. Description of the Related Art In post-tensioning type prestressed concrete, a PC tension member is tensioned at a site where a concrete structure is installed. In this case, it may be necessary to perform the construction under the following conditions. a) The PC tension member is a PC steel wire, a carbon fiber cable, or the like, and it is not appropriate to grab it and re-tensify it.

【0003】b)例えばコンクリート舗装などの場合の
ように、緊張端のコンクリートの端面からPC緊張材の
伸び方向の距離が制約される。 c)定着板をコンクリート端面から離れた位置で定着
し、又は暫定的に定着しておく必要がある場合がある。 以下、上記のような場合として空港におけるPC舗装コ
ンクリートスラブの場合を例にあげて説明する。近時、
軟弱地盤上の空港等の舗装は地盤沈下後のジャッキ・ア
ップによる修正を考慮しPC舗装とされる場合があり、
今後、我国における普及が予想されている。
B) For example, as in the case of concrete pavement, the distance in the extending direction of the PC tendons from the end face of the concrete at the tension end is restricted. c) It may be necessary to fix the fixing plate at a position away from the concrete end face, or to temporarily fix it. Hereinafter, the case of a PC paved concrete slab at an airport will be described as an example of the above case. Recently,
Pavement such as airports on soft ground may be PC pavement in consideration of correction by jack-up after subsidence,
It is expected to spread in Japan in the future.

【0004】PC舗装コンクリートスラブは、通常、幅
7.5m程度、長さ100m程度の舗装コンクリートス
ラブを敷設位置においてコンクリート施工し、これにポ
ストテンション方式により応力を導入して製造される。
例えば、PC舗装コンクリートスラブを形成すべき地盤
を造成し、この地盤上に地面からわずか浮上った位置に
シースを井桁状に敷設し、シースをコンクリート中に埋
込んだコンクリートを打設し、その後シースにPC鋼材
を挿通し、このPC鋼材を緊張し、強固なプレストレス
ト舗装スラブを地面上に形成する。この場合、隣接する
PCコンクリート舗装スラブ同志の間隔は長手方向にお
いて2m程度である。これは将来地盤沈下その他により
生じるPC舗装板の水平面の狂いを修正することを可能
とするために継目を設ける必要がある一方、継目はでき
るだけ近接しておくことが求められるからである。
The PC pavement concrete slab is usually manufactured by concrete construction of a pavement concrete slab having a width of about 7.5 m and a length of about 100 m at a laying position, and introducing stress into the pavement concrete slab by a post tension method.
For example, the ground where a PC pavement concrete slab should be formed is constructed, a sheath is laid on the ground at a position slightly above the ground, and the sheath is embedded in the concrete. A PC steel material is inserted through the sheath, and the PC steel material is tensioned to form a strong prestressed pavement slab on the ground. In this case, the space between adjacent PC concrete pavement slabs is about 2 m in the longitudinal direction. This is because it is necessary to provide a seam in order to correct the deviation of the horizontal surface of the PC pavement plate caused by ground subsidence or the like in the future, but the seam is required to be as close as possible.

【0005】一方、空港においては、航空計器類を高精
度で整備するために、コンパスヤードと呼ばれる区域が
要求される。このようなコンパスヤードは、周囲の磁性
物体(鋼線、鉄筋)による地磁気の歪が最少限となるよ
うな構造としなければならない。このコンパスヤードを
造成する場合には、PC舗装コンクリートスラブの緊張
材として、非磁性体であるカーボンを素材としたカーボ
ンファイバケーブル(以下CFCCと呼ぶ)を用いるこ
とが好ましい。CFCCは摩擦係数が小さいので、通
常、定着部分での滑りを防ぐため予めCFCCの端部に
マンションと呼ばれるプラスチックス系の鞘を固着し、
複数のマンションを1ケの定着金具に固定する。PC緊
張材が鋼線の場合、緊張作業中にくさびを差し替えてグ
リップによる掴み替えを行うことができるが、CFCC
では表面の摩擦係数が小さく滑りを生じること及び締付
力に抗する強度が小さいのでくさびの差し替えによるグ
リップの掴み替えは許容されない。
On the other hand, in airports, an area called a compass yard is required to maintain aviation instruments with high accuracy. Such a compass yard must have a structure that minimizes the geomagnetic distortion due to surrounding magnetic objects (steel wire, rebar). When constructing this compass yard, it is preferable to use a carbon fiber cable (hereinafter referred to as CFCC) made of carbon, which is a non-magnetic material, as a tension material for the PC pavement concrete slab. Since CFCC has a small friction coefficient, a plastics-based sheath called a condominium is usually fixed to the end of CFCC in advance in order to prevent slippage at the fixing part.
Fix multiple condominiums to one fixing bracket. When the PC tension material is steel wire, the wedge can be replaced during gripping work and gripping can be changed. CFCC
However, since the friction coefficient of the surface is small and slippage occurs, and the strength against the tightening force is small, gripping replacement by replacing the wedge is not allowed.

【0006】100mのCFCCを所定の応力まで緊張
するとその伸びは1mを超える。また、上述のように、
CFCCは滑りの問題から、くさびによる掴み替えがで
きないので隣接スラブ同士の2mの間隔の中にこの伸び
とジャッキ装置の長さを収納しなければならないが、従
来のセンターホールジャッキ等の緊張装置では不可能で
あった。
When a CFCC of 100 m is strained to a predetermined stress, its elongation exceeds 1 m. Also, as mentioned above,
Since CFCC cannot be gripped by a wedge due to slippage problem, it is necessary to store this extension and the length of the jack device within a distance of 2 m between adjacent slabs, but with conventional tension devices such as center hole jacks, etc. It was impossible.

【0007】[0007]

【発明が解決しようとする課題】本発明は、このような
場合に対応することができるポストテンションPC緊張
材の緊張方法及びその装置を提供することを目的とす
る。
SUMMARY OF THE INVENTION It is an object of the present invention to provide a post tension PC tension member tensioning method and apparatus capable of coping with such a case.

【0008】[0008]

【課題を解決するための手段】本発明は、複数のPC緊
張材を定着板に固定し、該定着板をジャッキで1段階牽
引し、支持材で仮支持し、ジャッキを盛替えて次の段階
を牽引し、この牽引と仮支持の動作を繰返して該緊張材
が所定の応力導入量に達するまで緊張材を緊張し、つい
で、定着材を前記定着板とコンクリート端面との間に介
装して前記定着板を定着することを特徴とするポストテ
ンションPC緊張材の緊張方法である。この場合、定着
材を介装して定着する工程に代り、又はその工程の後
に、PC緊張材をグラウチングし、PC緊張材のコンク
リートからの突出部を切断することとしてもよい。ま
た、PC緊張材がカーボンファイバケーブルの場合に
は、この緊張方法を適用するのが好適である。
According to the present invention, a plurality of PC tension members are fixed to a fixing plate, and the fixing plate is pulled by one stage by a jack, temporarily supported by a support member, and the jack is reassembled to the next stage. The tension member is tensioned until the tension member reaches a predetermined stress introduction amount by repeating the pulling operation and the temporary support operation, and then the fixing member is interposed between the fixing plate and the concrete end face. Then, the fixing plate is fixed to the post tension PC tension member. In this case, instead of the step of interposing and fixing the fixing material, or after the step, the PC tension material may be grouting, and the protruding portion of the PC tension material from the concrete may be cut. When the PC tension material is a carbon fiber cable, it is preferable to apply this tensioning method.

【0009】このような本発明方法を好適に実施するこ
とのできる本発明の装置は、定着板に螺合する牽引ボル
トと、この牽引ボルトを牽引する双胴ジャッキを備えた
ラムチェアと、このラムチェアをコンクリート端面から
支持するとともに内側に定着板を仮支持する仮支持突起
部を前記定着板が通過する間隔を隔てて備えた2本脚の
支柱材と、前記定着板の下面と前記仮支持突起部との間
に挿入して前記定着板を仮支持する挿入金物とを備えて
いる。また、本発明の定着装置は、PC緊張材を定着す
る円盤状の定着板と、応力を導入して生じたPC緊張材
の定着板とコンクリート端面との間に介装する2つ割の
中空円筒形定着材とから構成されている。
An apparatus of the present invention capable of suitably carrying out the method of the present invention is a ram chair provided with a tow bolt screwed to a fixing plate, a twin-body jack tow the tow bolt, and a ram chair. Supporting member from the concrete end surface and a temporary support projection part for temporarily supporting the fixing plate inside, with a spacing for passing the fixing plate, a two-leg support member, a lower surface of the fixing plate, and the temporary support projection. And an insertion metal member that is inserted between the fixing member and the fixing member to temporarily support the fixing plate. Further, the fixing device of the present invention is a disk-shaped fixing plate for fixing the PC tension material, and a hollow of 20% interposed between the fixing plate of the PC tension material generated by introducing stress and the concrete end face. It is composed of a cylindrical fixing material.

【0010】[0010]

【作用】本発明方法は、次の作用を生じる。 (a)緊張の際PC緊張材を把持するくさびによってP
C緊張材を掴む位置を盛り替えることができない場合に
用いられる。例えば、CFCCは摩擦係数が小さく、又
くさびによる締付力に抗する力が小さいのでくさびによ
る定着に対して不適である。従って、マンションを接着
して定着板に留めつける形式とし、定着板の位置の盛り
替えを行わない。
The method of the present invention has the following effects. (A) P by the wedge that grips the PC tension material during tension
C Used when it is not possible to change the position at which the tension material is gripped. For example, CFCC is not suitable for fixing due to a wedge because it has a small coefficient of friction and a small force against a tightening force due to a wedge. Therefore, the condominium is adhered and fixed to the fixing plate, and the position of the fixing plate is not changed.

【0011】(b)この定着板は応力導入のとき、PC
緊張材の伸びと同一の距離、すなわち約1m移動するの
で、PC舗装スラブの隣接スラブとの間隔では、センタ
ーホールジャッキによって一気に緊張することはできな
い。従って、ストロークの小さいジャッキを用いて、小
刻みに緊張し、定着板の仮定着によるジャッキの盛り替
えの繰り返すことが必要となる。このため、ジャッキの
盛り替えのための仮支持装置が必要となる。
(B) This fixing plate is a PC when stress is introduced.
Since it moves the same distance as the elongation of the tension member, that is, about 1 m, it is not possible to tension the center pawl slab all at once at the interval between the PC paving slab and the adjacent slab. Therefore, it is necessary to use a jack with a small stroke, to tense in small increments, and repeat the refilling of the jack by hypothetically attaching the fixing plate. Therefore, a temporary support device for refilling the jack is required.

【0012】(c)また定着板はPC緊張材の伸びによ
ってコンクリート端面から1mも離れた位置において定
着させざるを得ないので、特殊な定着装置を用いる。こ
の定着装置は2つ割とすることによってジャッキを取り
外す前に定着板をその位置に固定することができる。 (d)以上のジャッキの盛り替えとジャッキアップの繰
返しのため特殊なラムチェア(ジャッキ台座)とこれを
支持する2本脚の支柱及び継足支柱からなる装置を用い
る。これによって、従来のセンターホールジャッキを使
用せず小型ジャッキ2本をこのラムチェアに乗せて定着
板を牽引し、半割り円筒状の定着装置を用いることによ
り、ジャッキアップした定着板の最終固定を達成する。
(C) Since the fixing plate must be fixed at a position 1 m away from the concrete end face due to the elongation of the PC tension material, a special fixing device is used. By dividing the fixing device into two parts, the fixing plate can be fixed in that position before the jack is removed. (D) In order to repeat the above jack replacement and jack-up, a special ram chair (jack pedestal) and a device consisting of a two-leg support and a joint support are used. With this, instead of using the conventional center hole jack, two small jacks are placed on this ramchair to pull the fixing plate, and by using the half-fixed cylindrical fixing device, final fixing of the jacked-up fixing plate is achieved. To do.

【0013】この装置の開発により、緊張のためのスペ
ースが狹隘な場所においてもポストテンション方式でC
FCCを適用することが可能となる。この技術はCFC
Cに限るものではなく、また舗装以外の分野にも適用す
ることができる。
With the development of this device, the post tension type C can be used even in places where the space for tension is tight.
It becomes possible to apply FCC. This technology is CFC
The present invention is not limited to C and can be applied to fields other than pavement.

【0014】[0014]

【実施例】以下図面を参照してPC舗装スラブの実施例
について詳細に説明する。図1(a)は、PC舗装スラ
ブ1の端部において、CFCCの緊張材を緊張する状況
を示したPC舗装スラブ1の平面図である。打設された
コンクリート2の内部には図示省略したシースが埋込ま
れており、緊張材3が挿通されている。緊張材3は、3
本を1個の定着板4に取付けている。その取付は緊張材
3の端部に図示省略したマンションを接着し、このマン
ションを定着板4に設けた円錐形テーパ孔に嵌合わせて
密着させており、テーパ作用により定着している。2本
のジャッキ11を備えた双胴形のラムチェア12は、2
脚の支柱20を介してコンクリート2の端面5に反力を
支持させて取付けられる。ジャッキ11のラムヘッドに
は牽引板13が取付けられ、この牽引板13に牽引ボル
ト14が取付けられている。牽引ボルト14は定着板4
の中心のねじ孔に螺着される。
Embodiments of the PC paving slab will be described in detail below with reference to the drawings. FIG. 1A is a plan view of the PC pavement slab 1 showing a situation in which a tension member of CFCC is tensioned at an end of the PC pavement slab 1. A sheath (not shown) is embedded in the cast concrete 2, and a tendon 3 is inserted therein. Tension material 3 is 3
The book is attached to one fixing plate 4. For the attachment, a condominium (not shown) is bonded to the end of the tension member 3, and the condominium is fitted into a conical taper hole provided in the fixing plate 4 so as to be in close contact therewith, and is fixed by a taper action. A catamaran ram chair 12 with two jacks 11
It is attached to the end surface 5 of the concrete 2 via the pillars 20 of the legs while supporting the reaction force. A tow plate 13 is attached to the ram head of the jack 11, and a tow bolt 14 is attached to the tow plate 13. The tow bolt 14 is the fixing plate 4.
It is screwed into the central screw hole.

【0015】支柱20は、ラムチェア12の脚の底面と
コンクリート2の端面との間に介装される2本脚の支柱
であって、その脚の内側に仮支持のための突起21,2
2が突出している。図1(a)に示すように、牽引板1
3に取付けられた牽引ボルト14を定着板4の中心ねじ
孔にねじ込み、ジャッキ11を作動させて牽引板13を
13aの位置まで引上げると、定着板4も4aの位置ま
で引上げられる。
The column 20 is a two-leg column that is interposed between the bottom of the leg of the ramchair 12 and the end face of the concrete 2, and the protrusions 21 and 21 for temporary support are provided inside the leg.
2 is protruding. As shown in FIG. 1A, the towing plate 1
When the pulling bolt 14 attached to the screw 3 is screwed into the central screw hole of the fixing plate 4 and the jack 11 is operated to pull up the pulling plate 13 to the position 13a, the fixing plate 4 is also pulled up to the position 4a.

【0016】突起21と定着板4aとの間に、図1
(b)に示す挿入金物23を挿入して突起21に支持さ
せ、定着板4aを一時仮支持する。ジャッキ11を短縮
して牽引ボルトを定着板4aにさらにねじ込み、再びジ
ャッキアップして定着板4aを4bの位置まで引上げ
る。次の突起22と定着板4bとの間に挿入金物23を
挿入し、定着板を4bの位置で一時仮支持する。
Between the protrusion 21 and the fixing plate 4a, as shown in FIG.
The insert metal piece 23 shown in (b) is inserted and supported by the protrusions 21, and the fixing plate 4a is temporarily supported. The jack 11 is shortened, the tow bolt is further screwed into the fixing plate 4a, and the jack is again raised to pull up the fixing plate 4a to the position 4b. An insertion piece 23 is inserted between the next protrusion 22 and the fixing plate 4b to temporarily temporarily support the fixing plate at the position of 4b.

【0017】次にラムチェア12と支柱20との間に継
足支柱30を介装する。次いで、牽引ボルト14を定着
板4bに螺合し、緊張を繰返す。最終緊張量に達した
時、図1(b)中に定着状態を示すように、定着板4と
コンクリート2の端面5との間に2つ割の中空円筒形定
着材から成る定着スリーブ40を介装して定着する。定
着スリーブ40は、リング状の複数のフープ41を定着
板4に嵌めておき、これを定着スリーブの軸方向に移動
させて外径を拘束することによって2つ割りを1体化さ
せる。定着スリーブ40取付後、ラムチェア12、支柱
20、継足支柱30を取外す。なお、定着スリーブ40
は永久定着具として用いるばかりでなく、定着スリーブ
40で定着板4を仮定着しておき、緊張材3をグラウチ
ングによってコンクリート中に固定し、その後定着スリ
ーブを外して、コンクリート外に突出している緊張材3
切取ってしまうこともできる。この場合、定着スリーブ
40は繰返し使用可能となる。
Next, a joint support column 30 is interposed between the ram chair 12 and the support column 20. Next, the pulling bolt 14 is screwed into the fixing plate 4b, and the tension is repeated. When the final tension is reached, as shown in the fixing state in FIG. 1 (b), a fixing sleeve 40 made of a hollow cylindrical fixing material divided in half is provided between the fixing plate 4 and the end surface 5 of the concrete 2. Insert and fix. In the fixing sleeve 40, a plurality of ring-shaped hoops 41 are fitted on the fixing plate 4, and the fixing sleeve 4 is moved in the axial direction of the fixing sleeve to constrain the outer diameter, thereby making the split into one. After mounting the fixing sleeve 40, the ram chair 12, the column 20, and the joint column 30 are removed. The fixing sleeve 40
Is not only used as a permanent fixing tool, but also the fixing plate 4 is assumedly attached by the fixing sleeve 40, the tensioning member 3 is fixed in the concrete by grouting, and then the fixing sleeve is removed to make the tension protruding outside the concrete. Material 3
You can also cut it off. In this case, the fixing sleeve 40 can be used repeatedly.

【0018】図2は図1(b)のジャッキ牽引中の側面
図、図3は、その正面図、図4は定着板4の正面図及
び、支柱20の横断面図である。また図5は定着スリー
ブ40の斜視図を示したもので、長手方2つ割りにする
ことによって、ラムチェア12、支柱20、継足支柱3
0が取付けられている状態で、定着板4を定着すること
ができる。
FIG. 2 is a side view of the jack in FIG. 1 (b) being pulled, FIG. 3 is a front view thereof, FIG. 4 is a front view of the fixing plate 4, and a cross-sectional view of the column 20. FIG. 5 is a perspective view of the fixing sleeve 40. By dividing the fixing sleeve 40 into two pieces in the longitudinal direction, the ram chair 12, the support pillar 20, and the joint foot support pillar 3 are formed.
The fixing plate 4 can be fixed while 0 is attached.

【0019】[0019]

【発明の効果】本発明によれば、例えば、PC舗装スラ
ブの相互間隔が2m程度のときに、CFCCをPC緊張
材とするPC舗装スラブの緊張をすることが容易となっ
た。また、緊張後の定着も簡単にできる。本発明は、P
C緊張材を掴み替えて緊張できない場合、緊張端のコン
クリートの面からPC緊張材の伸び方向のスペースが小
さい場合、定着板をコンクリート端面から離れた位置で
定着し、又は暫定的に定着しておく必要がある場合など
に対応することができる。
According to the present invention, for example, when the PC pavement slabs have a mutual spacing of about 2 m, it becomes easy to tension the PC pavement slab using CFCC as the PC tension material. In addition, it can be easily fixed after tension. The present invention is
C If the tension material cannot be grabbed by re-grabbing the tension material, or if the space in the extending direction of the PC tension material from the concrete surface at the tension end is small, fix the fixing plate at a position away from the concrete end surface, or temporarily fix it. It can be used when it is necessary to leave it.

【図面の簡単な説明】[Brief description of drawings]

【図1】PC緊張材の緊張及び定着状態を示す説明図で
ある。
FIG. 1 is an explanatory diagram showing a tension and fixing state of a PC tension member.

【図2】図1の側面図である。FIG. 2 is a side view of FIG.

【図3】図2の正面図である。FIG. 3 is a front view of FIG.

【図4】定着板の正面図及び支柱の断面図である。FIG. 4 is a front view of a fixing plate and a cross-sectional view of a column.

【図5】定着スリーブの斜視図である。FIG. 5 is a perspective view of a fixing sleeve.

【符号の説明】[Explanation of symbols]

1 PC舗装スラブ 2 コンクリ
ート 3 緊張材 4 定着板 5 端面 11 ジャッキ 12 ラムチ
ェア 13 牽引板 14 牽引ボ
ルト 20 支柱 21,22
突起 23 挿入金物 30 継足支
柱 40 定着スリーブ(中空円筒形定着材) 41 フープ
1 PC Pavement slab 2 Concrete 3 Tension material 4 Fixing plate 5 End face 11 Jack 12 Ram chair 13 Traction plate 14 Traction bolt 20 Struts 21, 22
Protrusion 23 Insertion hardware 30 Joint foot support 40 Fixing sleeve (hollow cylindrical fixing material) 41 Hoop

Claims (5)

【特許請求の範囲】[Claims] 【請求項1】 複数のPC緊張材を定着板に固定し、該
定着板をジャッキで1段階牽引し、支持材で仮支持し、
ジャッキを盛替えて次の段階を牽引し、この牽引と仮支
持の動作を繰返して該緊張材が所定の応力導入量に達す
るまで緊張材を緊張し、ついで、定着材を前記定着板と
コンクリート端面との間に介装して前記定着板を定着す
ることを特徴とするポストテンションPC緊張材の緊張
方法。
1. A plurality of PC tension members are fixed to a fixing plate, and the fixing plate is pulled by one stage with a jack and temporarily supported by a supporting member,
The jack is rearranged and the next stage is towed, and the operation of towing and temporary support is repeated to tension the tension member until the tension member reaches a predetermined stress introduction amount, and then the fixing material is fixed to the fixing plate and concrete. A method of tensioning a post tension PC tension member, characterized in that the fixing plate is fixed by being interposed between the end face and the end face.
【請求項2】 定着材を介装して定着する工程に代り、
又はその工程の後に、PC緊張材をグラウチングし、P
C緊張材のコンクリートからの突出部を切断することを
特徴とする請求項1記載のポストテンションPC緊張材
の緊張方法。
2. Instead of the step of fixing by interposing a fixing material,
Or, after that step, grind the PC tension material, and
The method for tensioning a post-tension PC tension member according to claim 1, wherein the protrusion of the C-tensile material from the concrete is cut.
【請求項3】 PC緊張材がカーボンファイバケーブル
である請求項1又は2記載のポストテンションPC緊張
材の緊張方法。
3. The method for tensioning a post-tension PC tension member according to claim 1, wherein the PC tension member is a carbon fiber cable.
【請求項4】 定着板に螺合する牽引ボルトと、該牽引
ボルトを牽引する双胴ジャッキを備えたラムチェアと、
該ラムチェアをコンクリート端面から支持するとともに
内側に定着板を仮支持する仮支持突起部を前記定着板が
通過する間隔を隔てて備えた2本脚の支柱と、前記定着
板の下面と前記仮支持突起部との間に挿入して前記定着
板を仮支持する挿入金物とを備えたことを特徴とするポ
ストテンションPC緊張材の緊張装置。
4. A ram chair provided with a tow bolt screwed to the fixing plate and a twin-body jack tow the tow bolt.
Two-leg struts, which support the ramchair from the concrete end surface, and are provided with a temporary support projection portion for temporarily supporting the fixing plate inside, with a space for the fixing plate to pass through, a lower surface of the fixing plate, and the temporary support. A tensioning device for a post-tensioning PC tension member, which is provided with an insertion metal piece that is inserted between the protrusion and the temporary fixing plate.
【請求項5】 PC緊張材を定着する円盤状の定着板
と、応力を導入して生じたPC緊張材の該定着板とコン
クリート端面との間に介装する2つ割の中空円筒形定着
材とからなることを特徴とするポストテンションPC緊
張材の定着装置。
5. A disk-shaped fixing plate for fixing a PC tension member, and a hollow cylindrical fixing member having a split portion interposed between the fixing plate of the PC tension member generated by introducing stress and the concrete end face. A fixing device for a post tension PC tension material, which is made of a material.
JP3333198A 1991-12-17 1991-12-17 Post-tensioning PC tensioning method, tensioning device and fixing device Expired - Fee Related JPH0781241B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3333198A JPH0781241B2 (en) 1991-12-17 1991-12-17 Post-tensioning PC tensioning method, tensioning device and fixing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3333198A JPH0781241B2 (en) 1991-12-17 1991-12-17 Post-tensioning PC tensioning method, tensioning device and fixing device

Publications (2)

Publication Number Publication Date
JPH05163702A true JPH05163702A (en) 1993-06-29
JPH0781241B2 JPH0781241B2 (en) 1995-08-30

Family

ID=18263412

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3333198A Expired - Fee Related JPH0781241B2 (en) 1991-12-17 1991-12-17 Post-tensioning PC tensioning method, tensioning device and fixing device

Country Status (1)

Country Link
JP (1) JPH0781241B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100884780B1 (en) * 2008-07-16 2009-02-23 (주)삼우아이엠씨 A structure of prestressed concrete pavement and its construction method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100884780B1 (en) * 2008-07-16 2009-02-23 (주)삼우아이엠씨 A structure of prestressed concrete pavement and its construction method

Also Published As

Publication number Publication date
JPH0781241B2 (en) 1995-08-30

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