JPH0375703B2 - - Google Patents
Info
- Publication number
- JPH0375703B2 JPH0375703B2 JP59143890A JP14389084A JPH0375703B2 JP H0375703 B2 JPH0375703 B2 JP H0375703B2 JP 59143890 A JP59143890 A JP 59143890A JP 14389084 A JP14389084 A JP 14389084A JP H0375703 B2 JPH0375703 B2 JP H0375703B2
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- hydraulic jack
- retention
- steel material
- elongation
- 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 - Lifetime
Links
Landscapes
- Reinforcement Elements For Buildings (AREA)
Description
【発明の詳細な説明】
〈産業上の利用分野〉
この発明は、原子力発電の格納容器、海洋構造
物のプラツトフオーム、PCタンクなどのPC大型
構造物にプレストレスを導入する際に使用する
PC鋼材の緊張装置に関するものである。[Detailed Description of the Invention] <Industrial Application Field> This invention is used to introduce prestress into large PC structures such as containment vessels for nuclear power generation, platforms for offshore structures, and PC tanks.
This relates to a tensioning device for prestressing steel.
〈従来技術〉
この種のPC大型構造物にプレストレスを導入
する際、緊張力の管理は、その作業量が膨大であ
るにもかかわらず人手で行なつていたため、手間
がかかるという問題点があつた。<Prior art> When introducing prestress into this type of large PC structure, managing the tension was done manually despite the huge amount of work involved, which caused the problem of being time-consuming. It was hot.
〈発明の目的〉
この発明は、このような問題点を解消すべく提
案されたもので、その目的は、人手で行なつてい
た緊張管理をマイクロコンピユータに行なわせる
ことにより緊張管理に要するマンアワーを大幅に
低減し得るPC鋼材の緊張装置を提供することに
ある。<Purpose of the Invention> This invention was proposed to solve these problems, and its purpose is to reduce the man-hours required for tension management by having a microcomputer perform tension management that was previously done manually. The object of the present invention is to provide a tensioning device for prestressing steel that can significantly reduce tension.
〈発明の構成〉
この発明に係るPC鋼材の緊張装置はPC鋼材を
緊張する油圧ジヤツキと、この油圧ジヤツキのス
トロークを測定する変位計と、前記油圧ジヤツキ
の圧力を検出する圧力センサーと、これら変位計
および圧力センサーからの検出値を処理する演算
処理装置と、処理結果を出力するデイスプレイ、
プロツタなどの出力装置とからなり、
演算処理装置には、
ａ） 検出値である伸びおよび圧力を記憶する手
段
ｂ） 前記伸びと圧力からPC鋼材の回帰直線を
求め、出力装置に表示する手段
ｃ） 前記回帰直線と引止め線との交点から引止
圧力を求め、出力装置に表示する手段
ｄ） 前記引止圧力と引止計算値を照合し、管理
限界内であれば、演算処理結果を出力装置に記
録する手段
ｅ） 油圧ジヤツキのストロークが引止前に不足
した場合、盛替前後の伸びデータの整合処理を
行なう手段
ｆ）各PC鋼材の管理図を作成する手段
を備え、自動的に緊張管理が行なえるようにした
ものである。<Configuration of the Invention> The tensioning device for prestressing steel material according to the present invention includes a hydraulic jack for tensioning the prestressing steel material, a displacement meter for measuring the stroke of the hydraulic jack, a pressure sensor for detecting the pressure of the hydraulic jack, and a displacement sensor for detecting the pressure of the hydraulic jack. A processing unit that processes the detected values from the pressure sensor and the pressure sensor, and a display that outputs the processing results.
It consists of an output device such as a plotter, and the arithmetic processing device includes a) a means for storing the detected values of elongation and pressure, b) a means for determining the regression line of the prestressing steel material from the elongation and pressure and displaying it on the output device. ) A means for determining the retention pressure from the intersection of the regression line and the retention line and displaying it on an output device d) Comparing the retention pressure with the calculated retention value, and if it is within the control limits, displaying the calculation result. A means for recording on the output device e) A means for matching the elongation data before and after replacement when the stroke of the hydraulic jack is insufficient before stopping f) A means for creating a control chart for each PC steel material, and automatically This allows for tension management.
〈実施例〉
以下、この発明を図示する一実施例に基づいて
説明する。<Example> The present invention will be described below based on an illustrative example.
第１図に示すように、構造物Ｓの端部には、
PCケーブル１を緊張する油圧ジヤツキ２が取付
けられ、この油圧ジヤツキ２の側面には、油圧ジ
ヤツキ２のストロークを測定する変位計３と油圧
ジヤツキ２の圧力を検出する圧力センサー４が取
付けられている。 As shown in FIG. 1, at the end of the structure S,
A hydraulic jack 2 is attached to tension the PC cable 1, and a displacement gauge 3 for measuring the stroke of the hydraulic jack 2 and a pressure sensor 4 for detecting the pressure of the hydraulic jack 2 are attached to the side of the hydraulic jack 2. .
変位計３および圧力センサー４からの検出値は
スキヤナー・シグナルコンデイシヨナ・Ａ／Ｄ変
換器５を介してマイクロコンピユータ６に入力さ
れ、CRTデイスプレイタ、Ｘ−Ｙプロツタ８等
の出力装置に処理結果が出力される。 Detected values from the displacement meter 3 and pressure sensor 4 are input to a microcomputer 6 via a scanner/signal conditioner/A/D converter 5, and processed to an output device such as a CRT display or an X-Y plotter 8. The result will be output.
マイクロコンピユータ６のデータ処理プログラ
ムは、第３図にフローチヤートで示すごとく構成
され、データインプツトで、ケーブル番号、日
付、μ〓、E〓の管理限界、緊張計算値などが入力さ
れ、計測ａ、測定線記入ｂ、引止値表示ｃ、緊張
終了ｄ、盛替ｅ、μ〓管理図ｆの処理が選択的に行
なえるようにされている。 The data processing program of the microcomputer 6 is configured as shown in the flowchart in Fig. 3, and the cable number, date, control limits of μ〓, E〓, calculated tension values, etc. are input through the data input, and the measurement a. , measurement line entry b, stop value display c, tension end d, rearrangement e, μ control chart f can be selectively performed.
ａ）計測
変位計３および圧力センサー４からの検出値
である油圧ジヤツキのストローク（伸び）およ
び油圧（圧力）を測定して内部メモリに記憶す
る。a) Measurement The stroke (extension) and oil pressure (pressure) of the hydraulic jack, which are the detected values from the displacement meter 3 and the pressure sensor 4, are measured and stored in the internal memory.
ｂ）測定線記入
第４図に示すように、最終緊張力の70〜80％
に達した段階で、前記伸びと圧力からPCケー
ブルの回帰直線L1を求めて、原点修正した後、
CRTデイスプレイタに表示する。b) Fill in the measurement line As shown in Figure 4, 70-80% of the final tension
At the stage when , find the regression line L1 of the PC cable from the above elongation and pressure, and after correcting the origin,
Display on CRT display.
ｃ）引止値表示
回帰直線L1と引止め線L2との交点から引止
圧力を求め、CRTデイスプレイタに表示する。c) Retention value display The retention pressure is determined from the intersection of the regression line L1 and the retention line L2 and is displayed on the CRT display.
ｄ）緊張終了
前記引止圧力と引止計算値を照合し、管理限
界内であれば、伸び、圧力他全データをＸ−Ｙ
プロツタ８で記録する。（第４図参照）
ｅ）盛替
油圧ジヤツキ２のストロークが引止前に不足
した場合、盛替前後の伸びデータの整合処理を
行なう。d) End of tension Compare the above retention pressure with the retention calculation value, and if it is within the control limits, send all data such as elongation and pressure to X-Y
Record with Prota 8. (See Fig. 4) e) Replacement If the stroke of the hydraulic jack 2 is insufficient before stopping, the elongation data before and after the change is matched.
ｆ）μ〓管理図
指定した期間の各ケーブルのμ、グループ毎
の平均、グループ毎の上限・下限の差Ｒの管
理図をＸ−Ｙプロツタ８により作成する。（第
５図参照）
〈発明の効果〉
前述のとおり、この発明によれば、従来、人手
で行なつていた緊張管理をマイクロコンピユータ
に行なわせるようにしたため、緊張管理に要する
マンアワーを大幅に低減させることができるとと
もに計算ミスが発生しない。f) μ Control Chart A control chart of μ of each cable during the specified period, the average for each group, and the difference R between the upper and lower limits for each group is created using the X-Y plotter 8. (Refer to Figure 5) <Effects of the Invention> As mentioned above, according to the present invention, a microcomputer is used to perform tension management that was conventionally performed manually, thereby significantly reducing the man-hours required for tension management. This allows calculations to be made without any calculation errors.
さらに、管理図を容易に作成することができ
る。 Furthermore, control charts can be easily created.
第１図はこの発明に係るPC鋼材の緊張装置の
機器概念図、第２図は同様のブロツク図、第３図
は処理内容のフローチヤート、第４図は出力結果
を示すグラフ、第５図は同様の管理図である。
１…PCケーブル、２…油圧ジヤツキ、３…変
位計、４…圧力センサー、５…スキヤナー・シグ
ナルコンデイシヨナ・Ａ／Ｄ変換器、６…マイク
ロコンピユータ、７…CRTデイスプレイ、８…
Ｘ−Ｙプロツタ。
Fig. 1 is a conceptual diagram of the equipment for the tensioning device for prestressed steel materials according to the present invention, Fig. 2 is a similar block diagram, Fig. 3 is a flowchart of the processing contents, Fig. 4 is a graph showing the output results, Fig. 5 is a similar control chart. 1...PC cable, 2...hydraulic jack, 3...displacement meter, 4...pressure sensor, 5...scanner/signal conditioner/A/D converter, 6...microcomputer, 7...CRT display, 8...
X-Y plotter.
Claims (1)
圧ジヤツキのストロークを測定する変位計と、前
記油圧ジヤツキの圧力を検出する圧力センサー
と、これら変位計および圧力センサーからの検出
値を処理する演算処理装置と、処理結果を出力す
る出力装置とからなり、 演算処理装置には、 ａ） 検出値である伸びおよび圧力を記憶する手
段 ｂ） 前記伸びと圧力からPC鋼材の回帰直線を
求め、出力装置に表示する手段 ｃ） 前記回帰直線と引止め線との交点から引止
圧力を求め、出力装置に表示する手段 ｄ） 前記引止圧力と引止計算値を照合し、管理
限界内であれば、演算処理結果を出力装置に記
録する手段 ｅ） 油圧ジヤツキのストロークが引止前に不足
した場合、盛替前後の伸びのデータの整合処理
を行なう手段 ｆ） 各PC鋼材の管理図を作成する手段 を備えていることを特徴とするPC鋼材の緊張装
置。[Claims] 1. A hydraulic jack that tensions a PC steel material, a displacement meter that measures the stroke of the hydraulic jack, a pressure sensor that detects the pressure of the hydraulic jack, and detected values from these displacement meters and pressure sensors. and an output device that outputs the processing results, and the arithmetic processing device includes: a) means for storing the detected values of elongation and pressure; and b) a regression line of the prestressing steel material from the elongation and pressure. c) Means for determining the retention pressure from the intersection of the regression line and the retention line and displaying it on the output device; d) Comparing and managing the retention pressure and the calculated retention value. If it is within the limit, a means for recording the calculation results on the output devicee) If the stroke of the hydraulic jack is insufficient before stopping, a means for matching the elongation data before and after refillingf) For each PC steel material A tensioning device for prestressed steel material, characterized in that it is equipped with a means for creating a control chart.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14389084A JPS6121268A (en) | 1984-07-11 | 1984-07-11 | Apparatus for tensioning pc steel material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14389084A JPS6121268A (en) | 1984-07-11 | 1984-07-11 | Apparatus for tensioning pc steel material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6121268A JPS6121268A (en) | 1986-01-29 |
| JPH0375703B2 true JPH0375703B2 (en) | 1991-12-03 |
Family
ID=15349414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14389084A Granted JPS6121268A (en) | 1984-07-11 | 1984-07-11 | Apparatus for tensioning pc steel material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6121268A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0672496B2 (en) * | 1987-12-03 | 1994-09-14 | 大成建設株式会社 | PC steel tension management device for prestressed concrete construction |
| JPH02240374A (en) * | 1989-03-10 | 1990-09-25 | Joban Kosan Kk | Simultaneous stretching controller for pc steel wire |
| JP6259384B2 (en) * | 2014-10-06 | 2018-01-10 | 株式会社安部日鋼工業 | Tensile stretch amount measuring device and tendon stretch amount measuring method |
| JP6408397B2 (en) * | 2015-02-20 | 2018-10-17 | 株式会社近畿開発 | PC steel bar unit tightening force measuring device |
| JP7391689B2 (en) * | 2020-01-31 | 2023-12-05 | 住友電気工業株式会社 | Displacement measurement device, displacement measurement method, tension control chart creation method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5878712A (en) * | 1981-11-05 | 1983-05-12 | 清水建設株式会社 | Method of controlling strain of pc steel material in prestressed concrete |
-
1984
- 1984-07-11 JP JP14389084A patent/JPS6121268A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6121268A (en) | 1986-01-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105842153A (en) | Testing apparatus and method for coefficient of friction resistance of prestressed pipe | |
| EP0354218B1 (en) | process for calibrating and operating a balance | |
| JPH0375703B2 (en) | ||
| US20190263604A1 (en) | Conveyor system with weighing capability | |
| CN106596906A (en) | Automatic axial force data optimization method of large foundation pit supporting body | |
| CN117405487A (en) | Intelligent testing method and system for prestress friction loss | |
| CN1155808C (en) | Integrated autocontrol tester for prestressed stretch-draw anchor | |
| JPH0144485B2 (en) | ||
| JPH10299253A (en) | Prestressing management system for concrete building elements | |
| DE4335838C1 (en) | Device for the electronic determination of pressures and pressure differences in a fluid medium | |
| DE19703709C1 (en) | Method for detecting the actual state of a container, in particular composite compressed gas containers for vehicles | |
| JPS5922027B2 (en) | Automatic centralized tensioning method and device for prestressed concrete structures | |
| KR100206652B1 (en) | Instrument for estimating existing stress | |
| WO2010020760A1 (en) | Improvements in or relating to analysing structural members | |
| Gusev et al. | Monitoring of stress-strain state in steel oil storage tanks. Features of strain gauges transducers application in severe environment | |
| CN86105843A (en) | The calibrating installation of truck scale and track scale | |
| JPS6073911A (en) | Tension test method and tension test device for ground anchor | |
| JP2822502B2 (en) | Material testing machine | |
| SU1191731A1 (en) | Method of determining stress concentration ratio in gearing | |
| JPH08260464A (en) | Yamatake measurement data processing system | |
| JPH03176629A (en) | Calibrating and measuring method for bending stress of pipe | |
| SU1013567A1 (en) | Soil testing apparatus | |
| JPH02194397A (en) | Device for checking upper limit value of reactor physical test of zero-power of nuclear reactor | |
| Frantzen et al. | Evaluation of prestress cable strain in multiple beam configurations. | |
| CN2511943Y (en) | Self-control comprehensive test device for prestress force stretch-draw anchor |