JP2590008B2 - Automatic displacement measurement method for structures - Google Patents
Automatic displacement measurement method for structuresInfo
- Publication number
- JP2590008B2 JP2590008B2 JP63257260A JP25726088A JP2590008B2 JP 2590008 B2 JP2590008 B2 JP 2590008B2 JP 63257260 A JP63257260 A JP 63257260A JP 25726088 A JP25726088 A JP 25726088A JP 2590008 B2 JP2590008 B2 JP 2590008B2
- Authority
- JP
- Japan
- Prior art keywords
- measurement
- displacement
- receiving position
- laser light
- light
- 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
- Length Measuring Devices By Optical Means (AREA)
Description
【発明の詳細な説明】 〈産業上の利用分野〉 本発明は構造物の変位を計測する構造物の自動変位計
測方法に関し、詳細には例えば橋梁の桁架設時の変位測
定、或は橋桁完成後における荷重試験に伴う管理計測、
または地盤改良のプレロード中の沈下計測、または貯槽
や大型機械据付基礎等の大型構造物の沈下計測に適し
た、構造物の自動変位計測方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION <Industrial application field> The present invention relates to an automatic displacement measuring method for a structure for measuring the displacement of a structure, and more specifically, for example, measuring displacement when a bridge girder is erected, or completing a bridge girder. Management measurement with load test later,
The present invention also relates to an automatic displacement measurement method for a structure, which is suitable for measurement of settlement during preloading of ground improvement, or measurement of settlement of a large structure such as a storage tank or a large machine installation foundation.
〈従来の技術〉 現在、各種構造物の施工中における変位や完成後の変
位を計測する方法として種々存在するが、概ねつぎよう
に大別される。<Prior Art> At present, there are various methods for measuring the displacement during the construction of various structures and the displacement after completion, but they are roughly classified as follows.
接触式計測法 ダイヤルゲージやテンションメータ等を計器を使用し
て、各種構造物の変位を測定する方法。Contact measuring method A method of measuring the displacement of various structures using a dial gauge, tension meter, or other instrument.
非接触式視準計測法 レベルやトランシット及び標尺を用い、標尺の移動や
微調整をする補助員とレベルやトランシットを視準する
測量員との協同作業により構造物の変位又は構造物や地
盤の沈下を計測する方法。Non-contact collimation measurement method Using a level, transit, and staff, the displacement of the structure or the structural or ground deformation by the cooperation of an assistant who moves or fine-adjusts the staff and a surveyor who collimates the level or transit How to measure subsidence.
C.C.Dカメラ計測方式 C.C.Dカメラを使用して計測する方法。C.C.D camera measurement method Measurement method using C.C.D camera.
〈本発明が解決しようとする問題点〉 前述した従来の計測技術にはつぎのような問題点があ
る。<Problems to be Solved by the Present Invention> The above-described conventional measurement techniques have the following problems.
〈イ〉の計測方法にあっては、各測点の近くに計器を
取り付けるための不動の場所(以下「不動点」という)
が必要である。In the measurement method in <a>, an immovable place for mounting the instrument near each measurement point (hereinafter referred to as "immobile point")
is necessary.
そのため、不動点が得難い場合は計測が不可能とな
る。Therefore, when it is difficult to obtain a fixed point, measurement becomes impossible.
〈ロ〉の計測方法の場合、少なくとも複数の作業員が
必要である。In the case of <b>, the measurement method requires at least a plurality of workers.
そのため、珪素作業の無人化が難しいうえに、計測値
を得るまでに比較的長時間を要する。Therefore, it is difficult to make the silicon work unattended, and it takes a relatively long time to obtain a measured value.
〈ハ〉の計測方法は、1つの測点に対し高価なC.C.D
カメラ1台を必要とする。The measurement method of <c> is an expensive CCD for one measurement point.
Requires one camera.
そのため、測点が多くなるほど計測費用がかさむ。 Therefore, as the number of measurement points increases, the measurement cost increases.
〈ニ〉、の計測方法は、多数の測点を同時に計測で
きない。In the measurement method of <d>, a large number of measurement points cannot be measured simultaneously.
〈本発明の目的〉 本発明は以上の問題点を解決するために成されたもの
で、計測の無人化が図れ、しかも多数の測点の同時計測
を経済的に行える、構造物の自動変位計測方法を提供す
ることを目的とする。<Object of the present invention> The present invention has been made in order to solve the above-mentioned problems. The automatic displacement of a structure enables unmanned measurement and economical simultaneous measurement of many measurement points. It is intended to provide a measurement method.
〈本発明の構成〉 以下、図面を参照しながら本発明の一実施例について
説明する。<Configuration of the Present Invention> Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
尚、本実施例では斜張橋の施工に適用した場合を一例
にして、施工中における橋桁の変位の計測方法について
説明する。In this embodiment, a method of measuring the displacement of a bridge girder during construction will be described, taking as an example a case where the invention is applied to the construction of a cable-stayed bridge.
まず、使用機器について説明する。 First, the equipment used will be described.
〈イ〉レーザ発光機 レーザ発光機1は、水平に回転するレーザ光を発光す
る公知のレーザレベル等を使用できる。<A> Laser Light Emitting Device The laser light emitting device 1 can use a known laser level or the like that emits a horizontally rotating laser beam.
レーザ発光機1は、不動点に一台設置するだけでよ
い。Only one laser light emitter 1 needs to be installed at a fixed point.
〈ロ〉受光位置検出装置 受光位置検出装置2は、多数の光ファイバーとセンサ
ーを組み合わせたもので、レーザ光を受光するとこれを
座標として検知し、検知したデータを電器的に出力でき
る構造の装置である。<B> Light-Receiving Position Detecting Device The light-receiving position detecting device 2 is a combination of a large number of optical fibers and sensors. When a laser beam is received, it is detected as coordinates, and the detected data is output electronically. is there.
受光位置検出装置2は、各測点に1つ設置する。 One light receiving position detecting device 2 is installed at each measurement point.
〈ハ〉計測値の表示手段 複数の受光位置検出装置2群と現場近くの管理事務所
の間を有線域は無線で結び、受光位置検出装置2群から
出力されるデータを必要に応じてブラウン管表示やプリ
ントアウトできるように構成する。<C> Measured value display means The wired area is wirelessly connected between the plurality of light receiving position detecting devices 2 and the management office near the site, and the data output from the two light receiving position detecting devices 2 is used as necessary for the CRT. Configure so that it can be displayed and printed out.
これらの送電方法及び表示機器は公知のものによる。 These power transmission methods and display devices are based on known devices.
〈作用〉 橋桁の変位の計測方法にていて、斜張橋の施工と共に
説明する。<Operation> The method of measuring the displacement of the bridge girder will be explained together with the construction of the cable-stayed bridge.
〈イ〉レーザ発光機の設置 第1図に、斜張橋の施工現場を示す。<A> Installation of laser emitter Figure 1 shows the construction site of the cable-stayed bridge.
まず、架設予定の橋桁の変位を計測するため、レーザ
発光機1を地上または近隣の橋脚若しくは既架設桁等の
不動点に設置する。First, in order to measure the displacement of the bridge girder to be erected, the laser emitter 1 is installed on the ground or at a fixed point such as a nearby pier or an existing girder.
レーザ発光機1の設置にあたり、水平に回転するレー
ザ光が主桁の架設予定線に一致するように据え付け高さ
を調整して据え付けておけば、あとは特別な操作を必要
としない。When installing the laser light emitter 1, if the installation height is adjusted and installed so that the horizontally rotating laser light coincides with the planned erection line of the main girder, no special operation is required thereafter.
〈ロ〉桁の架設 3は組立を終えた橋脚であり、この橋脚3の上部と近
隣の橋脚31,32の間に主桁4を架設する。<B> Installation of girder 3 is a pier that has been assembled, and a main girder 4 is installed between the upper part of this pier 3 and neighboring piers 31 and 32.
主桁4の架設方法として例えば公知のキャンチレバー
工法を採用した場合は、主桁4のブロックを片持梁式に
主桁4を構成するブロックを左右対称に順次張り出すと
共に、橋脚3頂部と張り出した各主桁4のブロックの間
に斜ケーブル5を張設する。For example, when a known cantilever method is adopted as a method of erection of the main girder 4, the blocks of the main girder 4 are sequentially extended symmetrically with respect to the blocks constituting the main girder 4 in a cantilever manner, and the main girder 4 is extended with the top of the pier 3. The oblique cable 5 is stretched between the blocks of each main girder 4.
主桁4のブロックをキャンチレバーで張り出すと主桁
4の自由端が自重により下がり、ある間隔で斜ケーブル
5を緊張すると主桁4の自由端が持ち上がる。When the block of the main girder 4 is extended with the cantilever, the free end of the main girder 4 is lowered by its own weight, and when the oblique cable 5 is tensioned at a certain interval, the free end of the main girder 4 is lifted.
これを繰り返しながら主桁4を延長していく。 The main girder 4 is extended while repeating this.
〈ハ〉受光位置検出装置の設置 主桁4の架設作業中において、測点を必要とする主桁
4の各ブロックに受光位置検出装置2を垂直になるよう
に取り付ける。<C> Installation of the light receiving position detecting device During the work of erection of the main girder 4, the light receiving position detecting device 2 is mounted vertically on each block of the main girder 4 requiring a measuring point.
〈ニ〉変位計測 主桁4の変位を計測する場合、レーザ発光機1から水
平に回転するレーザ光を発光する。<D> Displacement measurement When measuring the displacement of the main girder 4, the laser light emitting device 1 emits a horizontally rotating laser beam.
すると、主桁4の各ブロックに取り付けた受光位置検
出装置2群がレーザ光を受光する。Then, a group of light receiving position detecting devices 2 attached to each block of the main girder 4 receives the laser beam.
各位置検出装置2はレーザ光を受光して電器信号に変
換して各測定の高さを算出する。Each position detecting device 2 receives a laser beam, converts it into an electric signal, and calculates the height of each measurement.
そして、各測点の計測値は、現場や現場近くの事務所
においてコンピュータ等に入力される。Then, the measured value of each measurement point is input to a computer or the like at a site or an office near the site.
作業員は、ブラウン管表示やプリントアウトにより表
示される各測点の計測値、即ち、主桁4全体のまたは特
定の測点の変位を把握する。The operator grasps the measured value of each measuring point displayed by the CRT display or the printout, that is, the displacement of the entire main girder 4 or the specific measuring point.
この計測値を基に、各設計予定線に沿った主桁4を構
築する。Based on the measured values, the main girder 4 along each design line is constructed.
尚、第2図に示すように主桁4の最終張出時、斜ケー
ブル5の張力調整後、両径間端部ブロック41は吊り支保
工により施工する。As shown in FIG. 2, when the main girder 4 is finally extended, after adjusting the tension of the oblique cable 5, the both span end blocks 41 are constructed by suspending supports.
〈その他実施例〉 前記した実施例は、橋梁の桁の変位を計測する場合に
ついて説明したが、その他に橋桁完成後における荷重試
験に伴う管理計測、または地盤改良のプレロード中の沈
下計測、または貯槽や大型機械据付基礎等の大型構造物
の沈下計測に適用することができる。<Other Examples> The above-described example describes the case where the displacement of the bridge girder is measured.However, in addition to the above, the management measurement accompanying the load test after the completion of the bridge girder, or the settlement measurement during the preloading of the ground improvement, or the storage tank It can be applied to measurement of settlement of large structures such as foundations for installing large machinery and large machinery.
本実施例の場合、不動点にレーザ発光機1を設置し、
各測点に受光位置検出装置2を設置して計測することは
前述した実施例と同様である。In the case of this embodiment, the laser light emitting device 1 is installed at a fixed point,
The measurement by installing the light receiving position detecting device 2 at each measurement point is the same as in the above-described embodiment.
また、受光位置検出装置2の設置方向が縦方向である
場合は、鉛直方向に回転するレーザ光を発光するように
レーザ発光機1を据え付けて計測することにより、横方
向の変位を計測することもできる。When the installation direction of the light receiving position detecting device 2 is the vertical direction, the displacement in the horizontal direction may be measured by installing and measuring the laser light emitting device 1 so as to emit the laser light rotating in the vertical direction. Can also.
〈本発明の効果〉 本発明は以上説明したようになるから次の効果が得ら
れる。<Effects of the Present Invention> The present invention has the following effects.
〈イ〉従来の無接触式の計測技術にあっては、多数の測
点を安価に計測することは不可能であった。<B> With the conventional non-contact measurement technology, it was impossible to measure a large number of measurement points at low cost.
本発明は、無接触式でありながら瞬時に多数の測点を
安価に計測することができる。According to the present invention, a large number of measuring points can be measured instantaneously and inexpensively while being non-contact type.
〈ロ〉変位計測のために人員を必要とせず、電源の入切
だけで何時でも計測値が求められる。<B> No personnel are required for displacement measurement, and measurement values can be obtained at any time simply by turning the power on and off.
従って、計測の無人化を図ることができる。 Therefore, unmanned measurement can be achieved.
〈ハ〉多数の測点の計測値を瞬時に求められ、計測値を
得るまでに時間がかからない。<C> Measurement values of many measurement points can be obtained instantaneously, and it does not take much time to obtain the measurement values.
〈ニ〉計測値を電気的に出力する方式であるから、測定
値は現場や現場近くの事務所等の何処でも入手できる。<D> Since the measured values are electrically output, the measured values can be obtained anywhere, such as on the spot or in an office near the spot.
第1図:本発明に係る一実施例の説明図であって橋桁の
張出時の計測状況の全体図 第2図:橋梁完成時の全体図Fig. 1 is an explanatory view of one embodiment according to the present invention, and is an overall view of a measurement state when a bridge girder is overhanging. Fig. 2 is an overall view of a bridge when completed.
フロントページの続き (56)参考文献 特開 昭48−14351(JP,A) 特開 昭63−219725(JP,A) 特開 昭62−232511(JP,A) 特開 昭61−239113(JP,A) 実開 昭61−10512(JP,U)Continuation of the front page (56) References JP-A-48-14351 (JP, A) JP-A-63-219725 (JP, A) JP-A-62-232511 (JP, A) JP-A-61-239113 (JP) , A) Actually open sho 61-10512 (JP, U)
Claims (1)
回転レーザ発光機を使用し、 変位計測対象である構造物側の各測定点には、 レーザ光の鉛直方向の受光位置を算出して電気的に出力
する受光位置検出装置を設置し、 前記レーザ発光機から発光する水平面の回転レーザ光を
複数の受光位置検出装置で受光して、 構造物の多数の測定点における、不動点を基準とした鉛
直方向の変位を瞬時に計測する、 構造物の自動変位計測方法When a laser light emitting device is installed at a fixed point in the vicinity of a structure that is displaced or deformed with time, the laser light emitting device scans horizontally to form a horizontal plane. At each measurement point on the side of the structure to be measured for displacement, a light receiving position detecting device that calculates the vertical light receiving position of the laser light and electrically outputs the light is installed, and emits light from the laser emitter. Automatic displacement measurement method for structures by receiving the rotating laser light in the horizontal plane with multiple light-receiving position detectors and instantaneously measuring the vertical displacement at many measurement points of the structure with respect to the fixed point
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63257260A JP2590008B2 (en) | 1988-10-14 | 1988-10-14 | Automatic displacement measurement method for structures |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63257260A JP2590008B2 (en) | 1988-10-14 | 1988-10-14 | Automatic displacement measurement method for structures |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH02105005A JPH02105005A (en) | 1990-04-17 |
JP2590008B2 true JP2590008B2 (en) | 1997-03-12 |
Family
ID=17303915
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP63257260A Expired - Lifetime JP2590008B2 (en) | 1988-10-14 | 1988-10-14 | Automatic displacement measurement method for structures |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2590008B2 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008224374A (en) * | 2007-03-12 | 2008-09-25 | Suekage Sangyo Co Ltd | Vehicular body dimension measuring method, and vehicular body dimension measuring tool |
JP7083129B2 (en) * | 2018-08-30 | 2022-06-10 | 株式会社大林組 | Installation height management system and installation height management method |
CN109540003B (en) * | 2019-01-15 | 2024-04-16 | 厦门大学嘉庚学院 | High formwork support frame pole setting horizontal displacement real-time supervision system based on laser |
CN117308808B (en) * | 2023-11-23 | 2024-04-09 | 深圳大学 | Deformation monitoring method and deformation monitoring system |
-
1988
- 1988-10-14 JP JP63257260A patent/JP2590008B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH02105005A (en) | 1990-04-17 |
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