JP2802831B2 - Measuring method of reaction force of bearing part during traveling construction of long span beam - Google Patents
Measuring method of reaction force of bearing part during traveling construction of long span beamInfo
- Publication number
- JP2802831B2 JP2802831B2 JP33596890A JP33596890A JP2802831B2 JP 2802831 B2 JP2802831 B2 JP 2802831B2 JP 33596890 A JP33596890 A JP 33596890A JP 33596890 A JP33596890 A JP 33596890A JP 2802831 B2 JP2802831 B2 JP 2802831B2
- Authority
- JP
- Japan
- Prior art keywords
- long span
- reaction force
- span beam
- during traveling
- bearing part
- 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
- 238000006243 chemical reaction Methods 0.000 title claims description 9
- 238000000034 method Methods 0.000 title description 8
- 238000010276 construction Methods 0.000 title description 3
- 238000000691 measurement method Methods 0.000 claims 1
- 238000005259 measurement Methods 0.000 description 12
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
Landscapes
- Conveying And Assembling Of Building Elements In Situ (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、長大スパン梁のトラベリング工法により
移動時に支承部に生じる水平方向および垂直方向の荷重
を計測し集中表示する方法に関するものである。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for measuring horizontal and vertical loads generated on a support portion during movement by a traveling method of a long span beam and displaying the same in a concentrated manner.
従来、長大スパン梁のトラベリング工法による移動時
には風圧や梁の左右の移動量の差によって梁にねじれを
生じ梁の移動に支障が生じるのを防ぐため、梁の各弦材
等多くの個所にひずみゲージを取付けて各部材の移動時
に生じる荷重の変化を測定するようにしていた。Conventionally, when moving a long span beam by the traveling method, to prevent the beam from twisting due to wind pressure and the difference in the amount of movement of the beam on the left and right, it is difficult to move the beam. A gauge was attached to measure a change in load generated when each member moved.
前記従来の部材荷重測定方法では１本の梁に多くの測
定点を設けその各にひずみゲージを取付けて測定を行う
ため測定が煩雑であるとともに、多くの測定値と設計値
の差を計算し梁の移動時危険性を即座に判断する必要が
あるが、その判断を速かに行うことは容易でない問題点
があった。In the conventional member load measuring method, many measurement points are provided on one beam, and a measurement is performed by attaching a strain gauge to each of them, so that the measurement is complicated, and a difference between many measurement values and a design value is calculated. Although it is necessary to immediately judge the danger of moving the beam, it is not easy to make the judgment quickly.
この発明は、これらの問題点を解消し、従来の数分の
１の測定点で測定するだけでトラベリング中の安全性を
即座に判断できる測定方法を提供することを課題とする
ものである。SUMMARY OF THE INVENTION It is an object of the present invention to solve these problems and to provide a measuring method which can immediately judge safety during traveling only by measuring at a few measuring points.
この発明は前記の課題を解決するため、長大スパン梁
の支承部の下端に水平方向および垂直方向の車輪を取付
け、これらの車輪が走行するレールのウエブにひずみゲ
ージを取付け、トラベリング中にひずみゲージで支承部
の水平荷重および垂直荷重を計測し集中表示する長大ス
パン梁のトラベリング施工時の支承部反力計測方法の手
段を講じるものである。In order to solve the above-mentioned problems, the present invention attaches horizontal and vertical wheels to the lower end of a support of a long span beam, attaches a strain gauge to a web of a rail on which these wheels travel, and sets a strain gauge during traveling. In this method, a method of measuring the reaction force of the bearing portion at the time of traveling construction of a long span beam, which measures the horizontal load and the vertical load of the bearing portion and collectively displays the same, is adopted.
この発明の１実施例について図面を参照して説明す
る。An embodiment of the present invention will be described with reference to the drawings.
第１図は長大スパン梁１を正面から見た概略図で、そ
の両側端に設けた支承部２を基礎構造体３上のＵ字壁４
内に敷設されたレールと車輪によって長大スパン梁１の
トラベリングを行うようにしたもので、その詳細は第２
図に示すように、Ｕ字壁４内の水平面に敷設されたレー
ル５上に支承部２の下端部に取付けられた車輪６を、ま
た垂直面に敷設されたレール5aには支承部２の側部に取
付けられた車輪６を当接させ、レール5,5aのウエブ5bの
両側には第３図に示すように、荷重による変形を電気抵
抗値に変えて出力するひずみゲージ７が取付けられ、そ
の外側はプロテクタ８で被覆されている。FIG. 1 is a schematic view of a long span beam 1 as viewed from the front.
The traveling of the long span beam 1 is carried out by the rail and the wheel laid in the inside.
As shown in the figure, a wheel 6 attached to the lower end of the support portion 2 is mounted on a rail 5 laid on a horizontal plane in the U-shaped wall 4, and a support portion 2 is mounted on a rail 5a laid on a vertical surface. As shown in FIG. 3, strain gauges 7 are attached to both sides of the webs 5b of the rails 5, 5a so that the wheels 6 attached to the side portions are brought into contact with each other and output by changing the deformation due to the load into electric resistance. The outside is covered with a protector 8.
第４図し長大スパン梁１を側面から見た場合のトラベ
リング時の支承部反力の測定状態を示すもので、各梁１
の支承部２に設けた車輪６はレール５上を移動できるよ
うに連結材９で連結され、右端の支承部２にはレール５
に係止できるようにされたジャッキ装置10が設けられ、
支承部2,2間のレール５のウエブ5bにはひずみゲージ７
が取付けられ、ひずみゲージ７の測定値はA/D変換ユニ
ット11を介してパーソナルコンピュータ12の陰極線菅
（CRT）13に連結している。FIG. 4 shows a state of measurement of the reaction force of the bearing at the time of traveling when the long span beam 1 is viewed from the side.
The wheel 6 provided on the support portion 2 is connected by a connecting member 9 so as to be able to move on the rail 5.
A jack device 10 is provided which can be locked to
A strain gauge 7 is provided on the web 5b of the rail 5 between the bearings 2 and 2.
The measurement value of the strain gauge 7 is connected to a cathode ray tube (CRT) 13 of a personal computer 12 via an A / D conversion unit 11.
多数の長大スパン梁１をジャッキ装置10で右方へ牽引
すると、各梁１は連結材９によって一体となって右方へ
移動するが、その際例えば右端の梁１の支承部２の下端
に取付けられた車輪６がレール5,5aに取付けられた右端
のひずみゲージ７上を通過するまでの間、梁１によって
生じるレール5,5aのひずみの電気抵抗値はA/D変換ユニ
ット11を介することによってデジタル信号としてパーソ
ナルコンピュータ12にインプットされ、支承部２の反力
に換算されてCRT13に表示される。When a large number of long span beams 1 are pulled to the right by the jack device 10, the beams 1 are integrally moved to the right by the connecting member 9, and at this time, for example, at the lower end of the support 2 of the beam 1 at the right end. Until the mounted wheel 6 passes over the rightmost strain gauge 7 mounted on the rail 5, 5a, the electric resistance value of the strain of the rail 5, 5a caused by the beam 1 passes through the A / D conversion unit 11. As a result, the digital signal is input to the personal computer 12, converted into a reaction force of the support 2, and displayed on the CRT 13.
CRT13は第５図に示すような表示面を表わすようにな
っており、CRT13の表示面に図示された梁１の左から順
に支承部２の測定位置は〜として表示され、測定位
置〜における測定値は棒グラフによって垂直、水平
方向の反力が設計値の何％に当るかが表示されるととも
に、その下方に測定値および許容設計値の欄に荷重（to
n）で表示される。なお、棒グラフの欄の点線で表示し
た横線は許容設計値を示すものである。The CRT 13 is designed to represent a display surface as shown in FIG. 5, and the measurement positions of the bearings 2 are indicated in the order from the left of the beam 1 shown on the display surface of the CRT 13 as, and the measurement at the measurement position The bar graph shows the percentage of the vertical and horizontal reaction force that corresponds to the design value by a bar graph, and the load (to
Displayed in n). The horizontal line indicated by the dotted line in the column of the bar graph indicates the allowable design value.
このCRT13上に表示される各支承２の荷重の設計値に
対する割合を各棒グラフで読み取り梁全体としての荷重
のバランスを知り、それによって梁の上弦材、下弦材、
斜材等に生じる荷重を推定することが可能となるのでト
ラベリングの進行によって生じる各部材の荷重が許容設
計値を上廻わるような危険な状態や左右不均等な牽引に
よる梁のねじれ等を多数の測定点によることなく１測定
点によって即座に判断することができ安全な施工を行う
ことができるものである。By reading the ratio of the load of each bearing 2 to the design value displayed on the CRT 13 with each bar graph, the load balance of the entire beam is known, and thereby the upper chord material, lower chord material,
Since it is possible to estimate the load generated on the diagonal material, etc., it is possible to avoid a dangerous situation in which the load of each member caused by the progress of traveling exceeds the allowable design value and torsion of the beam due to uneven left and right pulling etc. It is possible to judge immediately by one measurement point without depending on the measurement point, and to perform safe construction.
この発明は、レールのウエブにひずみゲージを取付け
るだけで長大スパン梁のトラベリング中に生じる支承部
反力を水平荷重および垂直荷重とに分けて集中表示され
るので梁の各弦材に生じる荷重を１個所の測定だけで推
定でき、各部材の許容設計値との比較によって即座に安
全性を判断することができる。According to the present invention, the reaction force generated during traveling of a long span beam is displayed separately in a horizontal load and a vertical load by simply attaching a strain gauge to the rail web, so that the load generated in each chord of the beam is reduced. Estimation can be made by only one measurement, and safety can be immediately judged by comparing with the allowable design value of each member.
第１図は長大スパン梁の一部を示す切断正面図、第２図
は第１図の一部の拡大切断正面図、第３図はレール部分
の拡大切断正面図、第４図は側面図、第５図はCRTの表
示面の拡大図である。 １……長大スパン梁、２……支承部、５……レール、5a
……レール、5b……ウエブ、６……車輪、７……ひずみ
ゲージ。1 is a cutaway front view showing a part of a long span beam, FIG. 2 is an enlarged cutaway front view of a part of FIG. 1, FIG. 3 is an enlarged cutaway front view of a rail portion, and FIG. 4 is a side view. FIG. 5 is an enlarged view of the display surface of the CRT. 1 ... Long span beam, 2 ... Support part, 5 ... Rail, 5a
... rail, 5b ... web, 6 ... wheels, 7 ... strain gauge.
フロントページの続き (72)発明者 武政 高弘 東京都中央区銀座８丁目21番１号 株式 会社竹中工務店東京本店内 (56)参考文献 特開 昭58−156664（ＪＰ，Ａ) 特開 昭57−12749（ＪＰ，Ａ) (58)調査した分野(Int.Cl.6，ＤＢ名) E04G 21/18 E04B 1/342Continued on the front page (72) Inventor Takahiro Takemasa 8-21-1, Ginza, Chuo-ku, Tokyo Inside Takenaka Corporation Tokyo Main Store (56) References JP-A-58-156664 (JP, A) JP-A-57 -12749 (JP, A) (58) Fields investigated (Int. Cl. 6 , DB name) E04G 21/18 E04B 1/342
Claims (1)
に水平方向および垂直方向の車輪（６）を取付け、これ
らの車輪（６）が走行するレール（５），（5a）のウエ
ブ（5b）にひずみゲージ（７）を取付け、トラベリング
中にひずみゲージ（７）で支承部（２）の水平荷重およ
び垂直荷重を計測し集中表示する長大スパン梁のトラベ
リング施工時の支承部反力計測方法。1. Horizontal and vertical wheels (6) are attached to the lower end of a support (2) of a long span beam (1), and rails (5), (5a) on which these wheels (6) run. Attach the strain gauge (7) to the web (5b), measure the horizontal load and vertical load of the bearing part (2) with the strain gauge (7) during traveling, and display it in a concentrated manner. Reaction force measurement method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33596890A JP2802831B2 (en) | 1990-11-30 | 1990-11-30 | Measuring method of reaction force of bearing part during traveling construction of long span beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33596890A JP2802831B2 (en) | 1990-11-30 | 1990-11-30 | Measuring method of reaction force of bearing part during traveling construction of long span beam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04203171A JPH04203171A (en) | 1992-07-23 |
| JP2802831B2 true JP2802831B2 (en) | 1998-09-24 |
Family
ID=18294336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33596890A Expired - Fee Related JP2802831B2 (en) | 1990-11-30 | 1990-11-30 | Measuring method of reaction force of bearing part during traveling construction of long span beam |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2802831B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6575790B2 (en) * | 2014-09-12 | 2019-09-18 | 日立造船株式会社 | Mooring mechanism and mooring method for mobile structure |
| CN106644216B (en) * | 2016-11-18 | 2024-02-20 | 河南省特种设备检验技术研究院 | Crane Liang Fanli device |
-
1990
- 1990-11-30 JP JP33596890A patent/JP2802831B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04203171A (en) | 1992-07-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |