JPH038923A - Pressure-welding type rear joining anchorage of prestressed concrete pile and pile head treatment method for rear joining anchorage - Google Patents
Pressure-welding type rear joining anchorage of prestressed concrete pile and pile head treatment method for rear joining anchorageInfo
- Publication number
- JPH038923A JPH038923A JP14099789A JP14099789A JPH038923A JP H038923 A JPH038923 A JP H038923A JP 14099789 A JP14099789 A JP 14099789A JP 14099789 A JP14099789 A JP 14099789A JP H038923 A JPH038923 A JP H038923A
- Authority
- JP
- Japan
- Prior art keywords
- pile
- fixing
- head
- pressure
- fixing device
- 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
Links
- 239000011513 prestressed concrete Substances 0.000 title claims description 7
- 238000005493 welding type Methods 0.000 title abstract 2
- 238000000034 method Methods 0.000 title description 6
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 24
- 239000010959 steel Substances 0.000 claims abstract description 24
- 230000003014 reinforcing effect Effects 0.000 claims description 22
- 238000002788 crimping Methods 0.000 claims description 5
- 238000009420 retrofitting Methods 0.000 claims description 4
- 238000003672 processing method Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 5
- 238000004873 anchoring Methods 0.000 abstract description 3
- 230000002787 reinforcement Effects 0.000 abstract 4
- 238000003466 welding Methods 0.000 abstract 4
- 238000005452 bending Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000004567 concrete Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Landscapes
- Piles And Underground Anchors (AREA)
- Foundations (AREA)
- Reinforcement Elements For Buildings (AREA)
Abstract
Description
【発明の詳細な説明】
３−１．産業分野
本発明は、建築及び土木のプレストレストコンクリート
杭基礎構造において耐震性の高い杭頭接合構造を得る事
を目的とするもので、通常のプレストレストコンクリー
ト杭にその構造を変える事なく容易に後付は出来、かつ
ＰＣ鋼棒の耐力と同等の接続性能が確保出来る圧着型後
付は定着具と後付は定着具による枕頭処理工法に関する
。[Detailed description of the invention] 3-1. Industrial Field The present invention aims to obtain a pile cap joint structure with high earthquake resistance in prestressed concrete pile foundation structures for architecture and civil engineering, and can be easily retrofitted to ordinary prestressed concrete piles without changing the structure. The present invention relates to a crimp-type retrofitting fixing device that can secure a connection performance equivalent to the proof stress of a PC steel bar, and a bedhead processing method using a fixing device.
３−２．従来技術
プレストレストコンクリート杭は、高強度の＝１ンクリ
ー１〜と前張力のＩ）ＣｆｌＡ棒を組み合わせ、かつ、
ＰＣ鋼棒を緊張してプレストレスを導入する事により大
きな曲げ耐力を発生する形式の杭である。この杭種によ
る基礎工法では工場製造により高強度で高品質な抗体部
が形成される反面、枕頭接合部の耐震性において杭端部
構造が基礎スラブとの接合を考えて製造されていない為
、構造・施工の面で十分な対応がなされていない現状に
ある。これまでに、耐震性の高い杭頭接合部を得る杭頭
処理工法として、杭頭部に雌ねじカプラーを埋め込み上
部構造接続鉄筋の定着孔を形成する方法及び端板上に設
けられた雌ねじ孔に雫に雄ねじ部を持つ鉄筋を定着する
方法が提案されているが、前者は杭の製造工程の改善が
必要となる事、製造効率の低下、構造的不完全さ及び杭
の施工が精度良く行われない場合は枕頭部を割砕する事
となり無駄となる事がある等の問題があり、後者は、鉄
筋を定着する端板の厚さは通常９ｎ＋ｍ〜］９ｍｍ程度
であり、かつこの位置では端板がコンクリートに固定さ
れていない為、強度的に必要な定着性能が確保されない
等の問題を残している。3-2. Prior art prestressed concrete piles combine high-strength = 1 concrete 1 ~ and pre-tensioned I) CflA bars, and
This is a type of pile that generates a large bending strength by applying prestress to the prestressed steel rod. In the foundation construction method using this type of pile, a high-strength, high-quality antibody part is formed by factory manufacturing, but on the other hand, in terms of earthquake resistance at the head joint, the pile end structure is not manufactured with connection with the foundation slab in mind. At present, sufficient measures have not been taken in terms of structure and construction. Up to now, as pile cap processing methods to obtain highly earthquake-resistant pile cap joints, we have developed a method of embedding a female threaded coupler in the pile head to form an anchor hole for superstructure connection reinforcing bars, and a method of forming a fixing hole for the superstructure connection reinforcing bar, and a method of embedding a female threaded coupler in the pile head to form a fixing hole for the reinforcing bar connecting the superstructure. A method has been proposed in which reinforcing bars with male threads are anchored to the droplets, but the former method requires improvements in the pile manufacturing process, reduces manufacturing efficiency, causes structural imperfections, and prevents the pile from being installed accurately. If not, there is a problem that the head of the pillow may be broken and wasted, and in the latter case, the thickness of the end plate to which the reinforcing bars are fixed is usually about 9n+m~]9mm, and in this position Since the end plates are not fixed to the concrete, there are still problems such as not being able to secure the necessary anchoring performance in terms of strength.
３−３構成 当発明を代表的な実施例に基づいて説明する。3-3 configuration The present invention will be explained based on typical examples.
圧着型後付り定着具は、図−２の杭端部に本発明の定着
具が圧着された状態の断面図に示すように、接続鉄筋１
の雌ねし定着孔２がある鉄筋定着部３とｐｃ鋼棒１０に
圧着する圧着固定部４からなる頭部６と、他端の雄ねじ
部７から構成される。この定着具は杭端部への固着を、
ＰＣ鋼棒１０の定着部に近接して端板９に設けた雌ねじ
孔８に雄ねし部７を挿入し、次に頭部６を締め付けて端
板９を介してｐｃＷ４棒端部１］に圧着固定部４の推進
方向と逆の移動を起こし、ＰＣ鋼棒端部１１と圧着固定
部４を圧着して行う。この圧着状態に於いて、ＰＣ鋼棒
端部１１には士向きの作用力１２と圧着固定部４には下
向きの抵抗力１３が発生している。The crimping-type retrofitting fixing device has a connecting reinforcing bar 1, as shown in the cross-sectional view of the fixing device of the present invention crimped to the end of a pile in Figure 2.
It is composed of a reinforcing bar fixing part 3 having a female threaded fixing hole 2, a head part 6 consisting of a crimp fixing part 4 which is crimped to a PC steel bar 10, and a male screw part 7 at the other end. This fixing device fixes to the end of the pile.
Insert the male threaded part 7 into the female screw hole 8 provided in the end plate 9 close to the fixing part of the PC steel bar 10, then tighten the head 6 and insert the PCW4 rod end 1 through the end plate 9] Then, the crimping fixing part 4 is moved in the opposite direction to the direction of propulsion, and the PC steel rod end 11 and the crimping fixing part 4 are crimped. In this crimped state, a downward acting force 12 is generated on the PC steel rod end 11 and a downward resistance force 13 is generated on the crimped fixing portion 4.
この定着具は接続鉄筋］の定着を鉄筋定着部３にある雌
ねし定着孔２にねじ式接合して行うが、鉄筋定着部３と
圧着固定部４の構造的一体性は、定着具の頭部６がｌ）
Ｃ鋼棒］０に接続された支持構造として保有する強度と
剛性により確保する。This fixing tool fixes the connecting reinforcing bars by screwing them into the female threaded fixing holes 2 in the reinforcing bar fixing section 3, but the structural integrity of the reinforcing bar fixing section 3 and the crimp fixing section 4 is Head 6 is l)
This is ensured by the strength and rigidity possessed by the support structure connected to C steel bar] 0.
図−３は、−本のＰＣ鋼棒１０に対して一本の接続鉄筋
］を定着する圧着型後付は定着具が杭頭部に圧着された
状態の断面図である。FIG. 3 is a cross-sectional view of the crimping-type retrofit fixing tool for fixing one connecting reinforcing bar to one PC steel bar 10 in a state where the fixing tool is crimped to the pile head.
この定着具には、雄ねじ部７の片側で圧着固定部４とＩ
）Ｃｉｌｌ棒端部棒端部用０する／、５に発生ずる曲げ
モーメン１〜に対して端板９に支圧を発生させて抵抗さ
せる支圧固定部５を頭部６に持っている。This fixing tool has a crimp fixing part 4 and an I part on one side of the male screw part 7.
)Cill Rod End The head 6 has a bearing pressure fixing part 5 that generates bearing pressure on the end plate 9 to resist the shear bending moment 1~ generated at the rod end.
３−４効果
定着具の頭部に加えるｌ〜ルク及び回転角の調節で必要
な定着性能を持つ定着具を杭端部に簡単に固着出来るの
で、工期が短縮できる。3-4 Effects A fixing device with the required fixing performance can be easily fixed to the end of the pile by adjusting the l ~ lux applied to the head of the fixing device and the rotation angle, so the construction period can be shortened.
ＰＣ鋼棒と接続鉄筋とが直線的に接続される為、効率的
な応力伝達機構を持つ耐震性の高い杭頭接合構造が形成
される。Since the PC steel rods and the connecting reinforcing bars are connected in a straight line, a highly earthquake-resistant pile cap joint structure with an efficient stress transmission mechanism is formed.
従来の端部構造のプレストレストコンクリート杭にその
まま適用できる。It can be applied as is to prestressed concrete piles with conventional end structure.
杭の施工結果に対して、後付は定着による杭頭処理が可
能な状況を確認した上で施工できるので、確実かつ無駄
がない。Retrofitting of the pile construction results can be carried out after confirming that the pile head treatment by fixing is possible, so it is reliable and waste-free.
図面は、この発明にかかわる代表的な実施例を示ずもの
であり、第１図は本発明の定着具が杭端部に圧着された
状態の平面図であり、第２図はその断面図である。
第３図は、−本のＰＣ鋼棒に対して一本の接続鉄筋を定
着するタイプの定着具が杭端部に圧着された状態の断面
図である。
符号表
１、接続鉄筋
２ 接続鉄筋の雌ねじ定着孔
３：定着具の鉄筋定着部
４ ＰＣ鋼棒端部と圧着する定着具の圧着固定部５：Ｐ
Ｃ鋼棒が一本の時に発生ずる曲げモーメントに対して端
板に支圧を発生させて抵抗する定着具の支圧固定部
６・定着具の頭部
７：定着具の雄ねじ部
８・杭の端板に設けた雌ねじ孔
９ 杭の端板
１０：ＰＣ鋼棒
１１：ＰＣ鋼棒端部
１２：圧着状態でのＰＣ鋼棒端部に発生ずる上向きの作
用力
１３、圧着状態での圧着固定部に発生ずる下向きの抵抗
力The drawings do not show typical embodiments of the present invention, and FIG. 1 is a plan view of the fixing device of the present invention crimped to the end of a pile, and FIG. 2 is a cross-sectional view thereof. It is. FIG. 3 is a cross-sectional view of a state in which a fixing device of the type that fixes one connecting reinforcing bar to two PC steel bars is crimped to the end of the pile. Code table 1, connection reinforcing bar 2 female screw fixing hole of connecting reinforcing bar 3: reinforcing bar fixing part of fixing tool 4 crimping fixing part of fixing tool that is crimped with the end of PC steel bar 5: P
Bearing pressure fixing part 6 of the fixing device that resists the shear bending moment that occurs when one C steel bar is generated by generating a bearing pressure on the end plate.Head 7 of the fixing device: External threaded part 8 of the fixing device 8.Pile Female screw hole 9 provided in the end plate of the pile End plate 10 of the pile: PC steel bar 11: PC steel bar end 12: Upward acting force 13 generated at the end of the PC steel bar in the crimped state, crimped in the crimped state Downward resistance force generated at the fixed part
Claims (1)
Ｃ鋼棒端部に圧着する圧着固定部と端板に支圧を発生さ
せる支圧固定部から構成される頭部を持つ他端が雄ねじ
の定着具であり、杭端部のＰＣ鋼棒定着部に近接して端
板上に設けた雌ねじ孔に定着具の雄ねじ部を挿入し、次
に定着具の頭部締め付けにより、端板を介してＰＣ鋼棒
端部に圧着固定部の推進方向と逆の移動を起こし、ＰＣ
鋼棒端部と固定部とに接触圧を発生させて杭端部に固定
する圧着型定着具であり、杭に定着する接続鉄筋の引張
強度量上の固着力を定着具の頭部締め付けにより発生さ
せ、定着具の頭部自体がＰＣ鋼棒に接続された支持構造
として保有する強度と剛性により接続鉄筋を支持する定
着具である事を特徴とするプレストレストコンクリート
杭の圧着型後付け定着具 ２−２、特許請求の範囲第１項に記載の定着具をプレス
トレストコンクリート杭の端部に固着し、次にこの定着
具に接続鉄筋を定着し、この鉄筋を基礎スラブと杭との
連結筋とする事を特徴とする後付け定着具による杭頭処
理工法[Claims] 2-1. A reinforcing bar fixing part with a female screw fixing hole for connecting reinforcing bars and P
The other end is a male screw fixing device with a head consisting of a crimping fixing part that crimps the end of the C steel bar and a bearing pressure fixing part that generates a bearing pressure on the end plate, and it is used to fix the PC steel bar at the pile end. Insert the male threaded part of the fixing tool into the female threaded hole provided on the end plate near the end plate, and then tighten the head of the fixing tool to crimp the end of the PC steel bar through the end plate in the direction of propulsion of the fixing part. causes the opposite movement, and the PC
This is a crimping type fixing device that generates contact pressure between the end of the steel bar and the fixing part to fix it to the end of the pile.The fixing force, which is based on the tensile strength of the connecting reinforcing bars that are fixed to the pile, is achieved by tightening the head of the fixing device. A pressure-bonding type retrofitting fixing device for prestressed concrete piles 2, which is characterized in that it is a fixing device that supports connecting reinforcing bars with the strength and rigidity that the head of the fixing device itself has as a support structure connected to a PC steel bar. -2. The fixing device according to claim 1 is fixed to the end of the prestressed concrete pile, and then the connecting reinforcing bar is fixed to this fixing device, and this reinforcing bar is used as the connecting bar between the foundation slab and the pile. A pile head processing method using a retrofitted fixing device, which is characterized by
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1140997A JPH0657944B2 (en) | 1989-06-05 | 1989-06-05 | Crimping type post-fixing fixtures for prestressed concrete piles and pile head treatment method using post-fixing fixtures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1140997A JPH0657944B2 (en) | 1989-06-05 | 1989-06-05 | Crimping type post-fixing fixtures for prestressed concrete piles and pile head treatment method using post-fixing fixtures |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH038923A true JPH038923A (en) | 1991-01-16 |
| JPH0657944B2 JPH0657944B2 (en) | 1994-08-03 |
Family
ID=15281759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1140997A Expired - Fee Related JPH0657944B2 (en) | 1989-06-05 | 1989-06-05 | Crimping type post-fixing fixtures for prestressed concrete piles and pile head treatment method using post-fixing fixtures |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0657944B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7214417B2 (en) | 2003-03-28 | 2007-05-08 | Toyoda Gosei Co., Ltd. | Weather strip and manufacturing method therefor |
| CN102556874A (en) * | 2011-12-17 | 2012-07-11 | 陈桂晖 | Looseness-preventing rope protection device of steel wire rope used for crane |
| US9533556B2 (en) * | 2014-11-24 | 2017-01-03 | Cqlt Saargummi Technologies S.À.R.L. | Sealing element having an injection-molded part |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49126305U (en) * | 1973-02-21 | 1974-10-29 | ||
| JPS5854449U (en) * | 1981-10-09 | 1983-04-13 | 服部 易玉 | Foundation pile structure |
-
1989
- 1989-06-05 JP JP1140997A patent/JPH0657944B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49126305U (en) * | 1973-02-21 | 1974-10-29 | ||
| JPS5854449U (en) * | 1981-10-09 | 1983-04-13 | 服部 易玉 | Foundation pile structure |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7214417B2 (en) | 2003-03-28 | 2007-05-08 | Toyoda Gosei Co., Ltd. | Weather strip and manufacturing method therefor |
| CN102556874A (en) * | 2011-12-17 | 2012-07-11 | 陈桂晖 | Looseness-preventing rope protection device of steel wire rope used for crane |
| US9533556B2 (en) * | 2014-11-24 | 2017-01-03 | Cqlt Saargummi Technologies S.À.R.L. | Sealing element having an injection-molded part |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0657944B2 (en) | 1994-08-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4441289A (en) | Earthquake-resistant reinforcement structure for an existing building with compression braces or tension braces | |
| JP4771138B2 (en) | Joining structure between steel beam and concrete body and its construction method | |
| JPH038923A (en) | Pressure-welding type rear joining anchorage of prestressed concrete pile and pile head treatment method for rear joining anchorage | |
| JPH08319696A (en) | Screw joint for steel bar and joint fitting | |
| JP4081602B2 (en) | Joint structure of steel-concrete composite structure and reinforced concrete structure | |
| JP4431986B2 (en) | Seismic reinforcement structure of building and seismic reinforcement method | |
| JP4154099B2 (en) | Joint structure of steel pipe member and concrete member | |
| KR100442704B1 (en) | Method and structure for reinforcement of ferroconcrete construction by using of exterior tension member | |
| JP3038574B2 (en) | Connection structure of precast concrete members | |
| JP2548623B2 (en) | Anchoring structure of beam main bar to prevent bond failure of steel reinforced concrete columns and beam joints | |
| JPH06185140A (en) | Steel beam joining structure with reinforced concrete earthquake resisting wall | |
| CN216810636U (en) | Assembled deviation-adjusting high-strength steel bar mechanical connecting device | |
| JP6549808B1 (en) | Connection fixing bracket | |
| JP2004316073A (en) | Joint structure of column and beam with floor slab composite function | |
| JP6921413B2 (en) | Reinforcing bar joints and rebar assemblies, as well as precast reinforced concrete bodies | |
| JP2000008546A (en) | Joint of screw steel rod for civil engineering construction and its manufacture | |
| JPH1025746A (en) | Fixing structure of steel-framed column base | |
| JP4430738B1 (en) | Pile head anchorage foundation | |
| JPH0561232U (en) | Steel column base structure | |
| JP2000320023A (en) | Connection structure of concrete product | |
| JPH01235726A (en) | Steel frame open pedestal construction | |
| JPH0224967Y2 (en) | ||
| JPH0237486B2 (en) | KANJOBUZAINOTSUGITEKOHO | |
| JPH0222820B2 (en) | ||
| JP2000226905A (en) | Connection method of ribbed steel bar |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |