JP2511792B2 - How to install the prestress fixing device - Google Patents

How to install the prestress fixing device

Info

Publication number
JP2511792B2
JP2511792B2 JP5135215A JP13521593A JP2511792B2 JP 2511792 B2 JP2511792 B2 JP 2511792B2 JP 5135215 A JP5135215 A JP 5135215A JP 13521593 A JP13521593 A JP 13521593A JP 2511792 B2 JP2511792 B2 JP 2511792B2
Authority
JP
Japan
Prior art keywords
girder
fixing
cable
tension
prestress
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
Application number
JP5135215A
Other languages
Japanese (ja)
Other versions
JPH06322987A (en
Inventor
道也 高田
Original Assignee
ショーボンド建設株式会社
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 ショーボンド建設株式会社 filed Critical ショーボンド建設株式会社
Priority to JP5135215A priority Critical patent/JP2511792B2/en
Publication of JPH06322987A publication Critical patent/JPH06322987A/en
Application granted granted Critical
Publication of JP2511792B2 publication Critical patent/JP2511792B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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、各種構造物の応力改善
において、プレストレス導入のための定着装置を母材に
取り付けるための新規な方法に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a novel method for attaching a fixing device for introducing prestress to a base material in improving stress of various structures.
【0002】[0002]
【従来の技術】従来から行われている各種構造物の応力
改善方法の一つとして、外ケーブルによる方法、すなわ
ち構造物にケーブルを配しケーブルに緊張力を与え、プ
レストレスを導入する方法がある。この方法は、たとえ
ば、橋梁構造物において、桁の下面又は側面に、鋼材又
はカーボン等の新素材からなるケーブルを定着装置を介
して橋軸方向に配し、これに緊張を与えることによって
桁に負の曲げモーメントを与え、載荷される荷重によっ
て生じる正の曲げモーメントを相殺することによって、
桁に発生する応力を改善する方法である。
2. Description of the Related Art As one of conventional stress improving methods for various structures, there is a method using an external cable, that is, a method of arranging a cable on a structure and applying a tension to the cable to introduce prestress. is there. This method is, for example, in a bridge structure, a cable made of a new material such as steel or carbon is arranged in the bridge axial direction on the lower surface or side surface of the girder through a fixing device, and tension is applied to the girder to give tension to the girder. By applying a negative bending moment and offsetting the positive bending moment caused by the applied load,
This is a method of improving the stress generated in the girder.
【0003】この方法は、具体的には、図4、図5に示
すように母材である桁1の下面又は側面に対向する一対
の定着装置4をボルト5で取り付け、定着装置4間に鋼
材又はカーボン等の新素材によるケーブル3を配し、プ
レストレスを導入することにより桁に負の曲げモーメン
トを与えるものである。
Specifically, as shown in FIGS. 4 and 5, in this method, a pair of fixing devices 4 opposed to the lower surface or the side surface of a girder 1 as a base material are attached with bolts 5, and the fixing devices 4 are provided between them. By disposing the cable 3 made of a new material such as steel or carbon and introducing prestress, a negative bending moment is given to the girder.
【0004】[0004]
【発明が解決しようとする課題】しかしながら、この方
法によるとケーブル3を定着する定着装置4は、桁1の
フランジ1aやウエブ1bにボルト穴6を開け、ボルト
5により接合されるか、溶接接合される。そのため母材
である桁の材質や断面に影響を与える。本発明はこのよ
うな課題を解決し、より効果があるプレストレス定着装
置の母材への取り付け方法を提供するものである。
However, according to this method, the fixing device 4 for fixing the cable 3 has bolt holes 6 formed in the flange 1a and the web 1b of the girder 1 and is joined by the bolts 5 or welded. To be done. Therefore, it affects the material and cross section of the girder that is the base material. The present invention solves such problems and provides a more effective method of attaching a prestress fixing device to a base material.
【0005】[0005]
【課題を解決するための手段】ケーブルに緊張力を与え
ることによって行う応力改善方法における上記課題は、
ケーブルの定着装置を高張力万力を用いて母材に摩擦接
合することにより解決することができる。
[Means for Solving the Problems] The above problems in the stress improving method performed by applying a tension force to a cable are
This can be solved by friction-bonding the cable fixing device to the base material using a high tension vise.
【0006】[0006]
【作用】ケーブルの定着装置を高張力万力を用いて桁に
摩擦接合すると母材を穴、溶接等によって傷つけること
がない。
When the cable fixing device is frictionally joined to the girder by using the high tension vise, the base material is not damaged by holes or welding.
【0007】[0007]
【実施例】つぎに、本発明の実施例を図面に基づき説明
する。図1は定着装置を桁下ブラケットを介して桁に間
接的に高張力万力を用いて摩擦接合した実施例の詳細
図、図2は図1のAーA断面図、図3は定着装置を直接
的に桁に高張力万力を用いて摩擦接合した実施例の概略
図である。
Embodiments of the present invention will now be described with reference to the drawings. FIG. 1 is a detailed view of an embodiment in which a fixing device is indirectly friction-bonded to a girder through a girder bracket using a high tension vise, FIG. 2 is a sectional view taken along line AA of FIG. 1, and FIG. 3 is a fixing device. FIG. 6 is a schematic view of an example in which the friction welding is directly performed on the girder using a high tension vise.
【0008】まず、図1、図2により実施例を説明す
る。桁1と桁下ブラケット11とは桁下ブラケット11
の上フランジ11aを桁1の下フランジ1aに重ね合わ
せ、両フランジ1aと11aを高張力万力7を用いて摩
擦接合している。
First, an embodiment will be described with reference to FIGS. Girder 1 and girder bracket 11 are girder bracket 11
The upper flange 11a is superposed on the lower flange 1a of the girder 1, and both flanges 1a and 11a are frictionally joined using a high tension vise 7.
【0009】緊張装置13は公知のセンターホールジャ
ッキ8、ラムチェア9、ロードセル10からなり、ケー
ブル3の定着装置4に組み込まれている。定着装置4は
上フランジ4aを介して桁下ブラケット11の下フラン
ジ11bにボルト12によって接合されている。ここ
で、桁1他端に接合される対向する定着装置は図示して
ないが同様に桁下フランジを介して間接的に取り付けら
れている。11cは補強板である。
The tensioning device 13 comprises a well-known center hole jack 8, a ram chair 9, and a load cell 10, and is incorporated in the fixing device 4 for the cable 3. The fixing device 4 is joined to the lower flange 11b of the girder bracket 11 by the bolt 12 via the upper flange 4a. Here, although not shown, the facing fixing device joined to the other end of the girder 1 is also indirectly attached via the girder lower flange. Reference numeral 11c is a reinforcing plate.
【0010】桁1と定着装置4の間に桁下ブラケット1
1を介在させたのは、プレストレス導入時に桁下フラン
ジに発生する曲げモーメントによる応力を分散させて桁
定着部への影響を低減させるためであり定着装置4を直
接に桁1に高張力万力を用いて摩擦接合してよいことは
もちろんである。
An under bracket 1 between the girder 1 and the fixing device 4
The reason for interposing 1 is to disperse the stress due to the bending moment generated in the flange under the girder at the time of introducing the prestress to reduce the influence on the girder fixing portion, and to fix the fixing device 4 directly to the girder 1 with high tension. Of course, friction joining may be performed using force.
【0011】ケーブル3は鋼材からなり、対向する定着
装置4間に一端は公知の緊張装置13に接続し、他端は
固定されて橋軸方向に配されている。なお、使用される
ケーブルは、カーボン等の新素材を使用してもよい。
The cable 3 is made of steel and has one end connected to a known tensioning device 13 between the fixing devices 4 facing each other, and the other end fixed and arranged in the bridge axis direction. The cable used may be a new material such as carbon.
【0012】つぎに、図3により別の実施例を説明す
る。この実施例は先に述べた従来例におけるボルト接合
による桁1の下フランジ1aと定着装置4の上フランジ
4aをボルト接合に代え直接高張力万力7を用いて摩擦
接合したものである。4bは定着具である。
Next, another embodiment will be described with reference to FIG. In this embodiment, the lower flange 1a of the girder 1 and the upper flange 4a of the fixing device 4 by bolt joining in the above-mentioned conventional example are directly frictionally joined by using high tension vise 7 instead of bolt joining. 4b is a fixing tool.
【0013】上述のようにして、桁とケーブルの定着装
置を直接又は間接に摩擦接合した後、公知の方法によ
り、外ケーブルに緊張を与え、桁にプレストレスを導入
する。
After the girder and the cable fixing device are directly or indirectly friction-bonded to each other as described above, the outer cable is tensioned by a known method to introduce prestress to the girder.
【0014】なお、ここでは橋梁構造物におけるプレス
トレスを導入する場合の定着装置の取り付け方法につい
て、実施例を示して説明したが、本発明は橋梁構造物以
外の構造物にも適用できるものであることはもちろんで
ある。
The method of attaching the fixing device in the case of introducing the prestress in the bridge structure has been described with reference to the embodiments, but the present invention can be applied to structures other than the bridge structure. Of course there is.
【0015】[0015]
【発明の効果】本発明は、上述のようにしてなるので、
特に、ケーブルの定着装置を母材に直接又は間接に高張
力万力を用いて接合してなるので、従来のように既設部
材にボルト穴を開けたり、溶接したりすることによる傷
をつけることがなく、母材の材質や断面に影響を与える
ことがない。
Since the present invention is constructed as described above,
In particular, since the cable fixing device is directly or indirectly bonded to the base material using a high tension vise, the existing members may be damaged by drilling bolt holes or welding. There is no influence on the material and cross section of the base material.
【0016】また、桁に負の曲げモーメントを生ぜしめ
るに必要なプレストレスを導入するとともに桁上面にプ
レキャスト床版を載置し、桁と床版を合成した後にプレ
ストレスを解除する桁断面の応力改善方法が、別途、本
発明者によって提案されているが、本発明をかかる方法
に用いるとこれまでのボルト接合や溶接接合とは異な
り、高張力万力の接合を解除することによるプレストレ
スの解除が容易となる。
In addition, a prestress necessary for producing a negative bending moment is introduced into the girder, a precast floor slab is placed on the upper surface of the girder, and the prestress is released after the girder and the floor slab are combined. A stress improving method has been separately proposed by the present inventor, but when the present invention is used in such a method, unlike the conventional bolt joining and welding joining, prestressing by releasing the joining of the high tension vise is performed. Can be released easily.
【図面の簡単な説明】[Brief description of drawings]
【図1】定着装置を桁に桁下ブラケットを介して高張力
万力により摩擦接合した実施例を示す詳細図。
FIG. 1 is a detailed view showing an embodiment in which a fixing device is frictionally joined to a girder via a girder bracket with a high tension vise.
【図2】図1のAーA断面図。FIG. 2 is a sectional view taken along line AA of FIG.
【図3】別の実施例を示す概略図。FIG. 3 is a schematic view showing another embodiment.
【図4】桁下にプレストレスを導入する従来例の概略
図。
FIG. 4 is a schematic view of a conventional example in which prestress is introduced under the girder.
【図5】定着装置を桁下に取り付けた従来例の概略図。FIG. 5 is a schematic view of a conventional example in which a fixing device is attached under a girder.
【符号の説明】[Explanation of symbols]
1 桁 2 床版 3 ケーブル 4 定着装置 7 高張力万力 1 digit 2 floor slab 3 cable 4 fixing device 7 high tension vise

Claims (1)

    (57)【特許請求の範囲】(57) [Claims]
  1. 【請求項1】 プレストレス導入のための定着装置を母
    材に高張力万力を用いて摩擦接合し、対向する定着装置
    間にケーブルを配し、ケーブルに緊張力を与えることに
    より応力改善を行うプレストレス定着装置の取り付け方
    法。
    1. A stress-improving device for introducing prestress is friction-bonded to a base material by using a high tension vise, a cable is arranged between opposing fixing devices, and a tension force is applied to the cable to improve stress. How to install the pre-stress fixing device.
JP5135215A 1993-05-14 1993-05-14 How to install the prestress fixing device Expired - Fee Related JP2511792B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5135215A JP2511792B2 (en) 1993-05-14 1993-05-14 How to install the prestress fixing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5135215A JP2511792B2 (en) 1993-05-14 1993-05-14 How to install the prestress fixing device

Publications (2)

Publication Number Publication Date
JPH06322987A JPH06322987A (en) 1994-11-22
JP2511792B2 true JP2511792B2 (en) 1996-07-03

Family

ID=15146530

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5135215A Expired - Fee Related JP2511792B2 (en) 1993-05-14 1993-05-14 How to install the prestress fixing device

Country Status (1)

Country Link
JP (1) JP2511792B2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020096596A (en) * 2001-06-21 2002-12-31 황문삼 construction method for defending earth using prestressed wale used therefor
KR20030093465A (en) * 2002-06-03 2003-12-11 (주)대우건설 Bridge Having Pre-cast Concrete Slab Reinforced By Compressive Force and Construction Method Thereof
FR2858345B1 (en) * 2003-07-28 2007-04-20 Freyssinet Int Stup Method for reinforcing an art work and anchor piece therefor
JP6080462B2 (en) * 2012-10-01 2017-02-15 株式会社エスイー Outer cable fixing device for prestress introduction in bridge girder
KR101439734B1 (en) * 2013-01-23 2014-09-17 (주)더나은구조엔지니어링 Tendon Anchorage Apparatus for Introducing Reinforce Moment Efficiently

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4480369A (en) * 1982-02-22 1984-11-06 Sanders Nicholas A Gripping tool

Also Published As

Publication number Publication date
JPH06322987A (en) 1994-11-22

Similar Documents

Publication Publication Date Title
JP2005180162A (en) Connecting structure and connecting method of i-type prestressed concrete beam with steel bracket
JP2759755B2 (en) Prestressed bridge reinforcement method using lower cable
KR100506572B1 (en) Steel beam constructed prestressing segmental component and construction method thereof
JP2511792B2 (en) How to install the prestress fixing device
JP2994365B1 (en) Concrete member reinforcement structure
JP2750556B2 (en) Manufacturing method of prestressed concrete girder
JP2533830B2 (en) Girder section stress improvement method
JP2688613B2 (en) Stringed beam floor structure
JP2688631B2 (en) Strut beam structure and prestressing method for strut beam structure
KR100254056B1 (en) Method and apparatus for repairing and reinforcing beams of bridge
KR100370177B1 (en) Compression bracket for external prestressing reinforcement of girder
JPH1161982A (en) Earthquake resistant reinforcing structure of building
JPH08253912A (en) Bride structure
JP6852935B1 (en) Connection structure and mounting method of concrete slab and steel beam
JP2522710B2 (en) Prestress introduction method for truss beams
JP2968952B2 (en) Column and beam joint structure and joining method
JP2003161044A (en) Method for installing base-isolation device in existing column
KR20180112150A (en) Prestressing appratus and construction method of girder
JPH10317684A (en) Fixing method of earthquake-resisting reinforcing brace
JPH0673203U (en) Beam-column joint structure
JPH0988239A (en) Reinforcing method of reinforced concrete column
JP3028993B2 (en) Flat slab construction method
JP2674460B2 (en) Joint structure between rectangular steel tube concrete column and H-shaped steel beam
JPH07180109A (en) Floor slab prestress introduction method of continuous built-up bridge
JP4639012B2 (en) High-strength bolt joint structure of box-shaped cross section column and H-shaped cross section beam and its construction method

Legal Events

Date Code Title Description
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 19960116

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

S531 Written request for registration of change of domicile

Free format text: JAPANESE INTERMEDIATE CODE: R313531

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20080416

Year of fee payment: 12

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20090416

Year of fee payment: 13

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20100416

Year of fee payment: 14

S531 Written request for registration of change of domicile

Free format text: JAPANESE INTERMEDIATE CODE: R313531

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110416

Year of fee payment: 15

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110416

Year of fee payment: 15

S531 Written request for registration of change of domicile

Free format text: JAPANESE INTERMEDIATE CODE: R313531

R370 Written measure of declining of transfer procedure

Free format text: JAPANESE INTERMEDIATE CODE: R370

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120416

Year of fee payment: 16

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130416

Year of fee payment: 17

LAPS Cancellation because of no payment of annual fees