JPH11173842A - Subsidence measuring method - Google Patents
Subsidence measuring methodInfo
- Publication number
- JPH11173842A JPH11173842A JP36221297A JP36221297A JPH11173842A JP H11173842 A JPH11173842 A JP H11173842A JP 36221297 A JP36221297 A JP 36221297A JP 36221297 A JP36221297 A JP 36221297A JP H11173842 A JPH11173842 A JP H11173842A
- Authority
- JP
- Japan
- Prior art keywords
- fluid
- subsidence
- measured
- measuring
- tube
- 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.)
- Pending
Links
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- Measuring Fluid Pressure (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は建造物地盤等の測定
対象の沈下を測定する方法である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for measuring settlement of an object to be measured such as the ground of a building.
【０００２】[0002]
【発明が解決しようとする課題】従来、建造物地盤等の
沈下を測定する技術としては、複数の電気式傾斜計を収
納した管体を地山中に挿入し、この傾斜計で得たデ−タ
を基に計算により沈下量を求めていた。そのため、計算
による二次的な算出となり、測定誤差が発生するおそれ
があった。Conventionally, as a technique for measuring settlement of the ground of a building or the like, a pipe housing a plurality of electric inclinometers is inserted into the ground, and data obtained by the inclinometer is obtained. The amount of settlement was calculated based on the data. Therefore, the calculation is a secondary calculation, and a measurement error may occur.
【０００３】また、一つの傾斜計は重量が大きいため、
それを収納する管体の径を大きくする必要があり、掘削
量が多くなることや、傾斜計は埋殺しとなるため、測定
コストが高くなるなどの問題も発生する。さらに、管体
内において傾斜計は直列で配線されているため、１か所
が故障すると測定全体が不可能となる問題もある。[0003] Also, since one inclinometer is heavy,
It is necessary to increase the diameter of the pipe housing the pipe, and the excavation amount is increased, and the inclinometer is buried, which causes problems such as an increase in measurement cost. Furthermore, since the inclinometers are wired in series in the tube, there is a problem in that if one of the inclinometers fails, the entire measurement becomes impossible.
【０００４】[0004]
【発明の目的】本発明は、測定精度の向上、装置外管の
縮径、コストの低減及び故障による測定不能の回避を図
ることができる沈下測定方法を提供することを目的とす
る。SUMMARY OF THE INVENTION It is an object of the present invention to provide a sinking measuring method capable of improving the measuring accuracy, reducing the diameter of the outer tube of the apparatus, reducing the cost, and avoiding measurement failure due to a failure.
【０００５】[0005]
【課題を解決するための手段】上記課題を解決するため
の手段として本発明は、測定対象内に、流体を充填した
管体を設置し、測定対象が沈下した際の前記管体の変位
により発生する流体圧差によって、測定対象の沈下量を
求めることを特徴とした、沈下測定方法を提供する。According to the present invention, as a means for solving the above-mentioned problems, a tube filled with a fluid is installed in a measurement object, and the displacement of the tube when the measurement object sinks is determined. Provided is a settlement measurement method, which is characterized in that a settlement amount of a measurement target is obtained based on a generated fluid pressure difference.
【０００６】[0006]
【発明の実施の形態１】以下、図面を参照しながら本発
明の実施の形態について説明する。 （１）測定装置の説明 本発明に用いる測定装置は以下の構成要素より成り立
つ。Embodiment 1 Hereinafter, embodiments of the present invention will be described with reference to the drawings. (1) Description of the measuring device The measuring device used in the present invention is composed of the following components.
【０００７】＜イ＞測定管 測定管１は、図１〜３に示すように、測定対象の沈下に
追従して変位可能な管体であり、例えば、ポリカ−ボネ
−トパイプなどを使用する。<A> Measuring Tube As shown in FIGS. 1 to 3, the measuring tube 1 is a tube body which can be displaced following the sinking of the object to be measured. For example, a polycarbonate pipe or the like is used.
【０００８】＜ロ＞端末器具 端末器具２は、図４に示すような板状体であり、その上
面には開口２１を有し、開口２１は立上がり部２２で包
囲されている。<B> Terminal Equipment The terminal equipment 2 is a plate-like body as shown in FIG. 4, and has an opening 21 on the upper surface thereof, and the opening 21 is surrounded by a rising portion 22.
【０００９】また、端末器具２の側面には、後述の充填
管３との連結治具２３が設けられており、この連結治具
２３と開口２１とは絞り部２４で連通されている。この
絞り部２４は、充填管３のバルブを閉じた直後の急激な
水圧変化を緩やかにすることにより、安定した開口２１
の水面を得るためのものである。A connecting jig 23 for connecting to the filling tube 3 described later is provided on a side surface of the terminal device 2, and the connecting jig 23 and the opening 21 are communicated with each other through a throttle 24. The throttle section 24 reduces the sudden change in water pressure immediately after the valve of the filling pipe 3 is closed, so that a stable opening 21 is formed.
To get the water surface.
【００１０】さらに、端末器具２の上面には、サンドブ
ラストなどで粗面２５を形成しておき、表面張力を無く
して水面を安定させるとよい。Further, it is preferable to form a rough surface 25 on the upper surface of the terminal device 2 by sandblasting or the like so as to eliminate the surface tension and stabilize the water surface.
【００１１】そして端末器具２は、図３に示すように、
開口２１を上に向け、測定管１内に所定数、適宜間隔を
おいてネジ等で固定される。このとき、端末器具２は測
定管１内の上部空間に固定し、下部空間は充填管３群の
配置空間として、また端末器具２より溢れ出た水の送水
路として使用する。[0011] Then, as shown in FIG.
A predetermined number of the openings 21 are fixed in the measuring tube 1 with screws or the like at appropriate intervals with the opening 21 facing upward. At this time, the terminal device 2 is fixed to the upper space in the measuring tube 1, and the lower space is used as a space for disposing the three groups of filling tubes and as a water supply channel for water overflowing from the terminal device 2.
【００１２】＜ハ＞充填管 充填管３の一端は、図２に示すように、測定管１内に配
置された端末器具２の連結治具２３と連結され、他端は
図１に示すように液圧測定装置４と連結される。充填管
３は各端末器具２と液圧測定装置４間を独立して一本ず
つで連結する。<C> Filling Tube One end of the filling tube 3 is connected to a connecting jig 23 of the terminal device 2 arranged in the measuring tube 1 as shown in FIG. 2, and the other end is as shown in FIG. Is connected to the hydraulic pressure measuring device 4. The filling pipe 3 connects each terminal device 2 and the hydraulic pressure measuring device 4 independently and one by one.
【００１３】この充填管３内には、水や油、その他の流
動性の良い流体が充填される。また、充填管３は、柔軟
性を持たせ、かつ長さをかせぐことによって、アキュム
レ−タ的な機能を持たせるとよい。The filling tube 3 is filled with water, oil, or another fluid having good fluidity. The filling tube 3 may have a function like an accumulator by giving flexibility and increasing the length.
【００１４】＜ニ＞液圧測定装置 液圧測定装置４は、充填管３内の流体圧差により測定対
象の沈下量を求めるための公知の計器である。例えば、
ベロ−ズと、これに連結された差動トランスで構成さ
れ、水圧が変化するとベロ−ズが変形して差動トランス
のコアが移動し、コイルとの間に相対的は変位が発生
し、これに比例して発生した電圧を鉛直変位に換算して
沈下量を得る装置が採用できる。<D> Hydraulic Pressure Measuring Device The hydraulic pressure measuring device 4 is a known instrument for determining the amount of subsidence of the object to be measured based on the fluid pressure difference in the filling pipe 3. For example,
It is composed of a bellows and a differential transformer connected to the bellows. When the water pressure changes, the bellows deforms and the core of the differential transformer moves, and a relative displacement occurs between the coil and the coil. A device that obtains a sinking amount by converting a voltage generated in proportion to the vertical displacement into a vertical displacement can be adopted.
【００１５】＜ホ＞流体の充填手段 充填管３内に流体を充填する場合は、例えば図１に示す
ように、流体タンク５内の流体を、ポンプ５１を作動さ
せ、電磁弁５２群を開放して、分岐管３１を介して行う
ことができる。なお、図中５３は、液圧測定装置４群と
電磁弁５２群及びモ−タ５１の制御部であり、図中５４
はリリ−フバルブである。<E> Means for Filling Fluid When filling the filling pipe 3 with a fluid, for example, as shown in FIG. 1, the fluid in the fluid tank 5 is operated by the pump 51 to open the solenoid valve 52 group. This can be performed via the branch pipe 31. Reference numeral 53 in the figure denotes a control unit for the liquid pressure measuring device 4 group, the solenoid valve 52 group, and the motor 51.
Is a relief valve.
【００１６】＜ヘ＞流体の回収手段 充填管３から溢れ出た流体を回収する場合は、例えば図
１に示すように、測定管１の下端部と流体タンク５間を
リタ−ンホ−ス５５で連通し、測定管１の下部空間を流
れて出て来た流体を回収することができる。<F> Fluid recovery means When recovering the fluid overflowing from the filling pipe 3, for example, as shown in FIG. 1, a return hose 55 is provided between the lower end of the measuring pipe 1 and the fluid tank 5. And the fluid flowing out of the lower space of the measuring tube 1 and coming out can be collected.
【００１７】（２）本発明の測定方法 次に、上記のように構成した沈下測定装置を用いた本発
明の測定方法について説明する。なお、以下では、建造
物地盤等の沈下を測定する場合を例に挙げて説明する
が、これに限られるものではない。(2) Measuring Method of the Present Invention Next, a measuring method of the present invention using the squat measuring device configured as described above will be described. In the following, a case where the settlement of a building ground or the like is measured will be described as an example, but the present invention is not limited to this.
【００１８】＜イ＞測定管の挿入 先ず、図１に示すように、トンネル内より周囲地山に向
けて削孔し、この削孔内に長尺管８を挿入する。さら
に、この長尺管８内に測定管１を、図２に示すような接
続金具１１を用いて継ぎ足しながら所定長まで挿入す
る。測定管１内には、所定の間隔で端末器具２及び充填
管３が配備されている。<A> Insertion of Measuring Tube First, as shown in FIG. 1, a hole is drilled from the inside of the tunnel to the surrounding ground, and a long tube 8 is inserted into the hole. Further, the measuring tube 1 is inserted into the long tube 8 to a predetermined length while being added using a connection fitting 11 as shown in FIG. In the measuring tube 1, a terminal device 2 and a filling tube 3 are provided at predetermined intervals.
【００１９】＜ロ＞ゼロ設定 流体タンク５内の流体を、ポンプ５１を作動させ、電磁
弁５２群を開放して、分岐管３１を介して充填管３内に
充填する。このとき、図２の部分拡大図に示すように、
端末器具２の立上がり部２２から、表面張力により流体
が露出するように充填する。この状態で液圧測定装置４
及び制御部５３をゼロ設定する。<B> Zero setting The pump 51 is operated to open the group of solenoid valves 52 to fill the fluid in the fluid tank 5 into the filling pipe 3 via the branch pipe 31. At this time, as shown in the partial enlarged view of FIG.
Filling is performed so that fluid is exposed from the rising portion 22 of the terminal device 2 by surface tension. In this state, the hydraulic pressure measuring device 4
And the control unit 53 is set to zero.
【００２０】＜ハ＞沈下測定 沈下測定開始時に、再びポンプ５１を作動させて流体を
充填管３内に充填し、端末器具２から溢れ出させ、リタ
−ンホ−ス５５を介して流体タンク５内に流入させ、再
び充填管３に充填するという、流体の循環を行う。そし
て、建造物地盤等が沈下すると、長尺管８及び測定管１
が沈下に追従して変位するため、測定管１内の端末器具
２に変位が生じる。その結果、測定管１内の流体圧が変
化するため、液圧測定装置４でその圧力差を読取り、沈
下量に変換することができる。<C> Settlement Measurement At the start of the settlement measurement, the pump 51 is operated again to fill the fluid into the filling tube 3, overflow the terminal device 2, and return to the fluid tank 5 via the return hose 55. The fluid is circulated in such a manner that the fluid flows into the inside and is filled in the filling tube 3 again. When the ground of the building subsides, the long pipe 8 and the measuring pipe 1
Is displaced following the settlement, so that the terminal device 2 in the measuring tube 1 is displaced. As a result, the fluid pressure in the measuring tube 1 changes, so that the pressure difference can be read by the fluid pressure measuring device 4 and converted into the amount of settlement.
【００２１】[0021]
【発明の効果】本発明は以上説明したようになるから次
のような効果を得ることができる。 ＜イ＞流体圧差より測定対象の沈下量を直接求めること
ができ、二次的な計算は不要であるため、測定精度の向
上を図ることができる。As described above, the present invention has the following effects. <A> The amount of settlement of the object to be measured can be directly obtained from the fluid pressure difference, and no secondary calculation is required, so that the measurement accuracy can be improved.
【００２２】＜ロ＞従来のような電気式傾斜計を用い
ず、充填管と端末器具よりなる簡易構造であるため、測
定管の縮径ができ、掘削量も削減することができる。ま
た、コストの低減を図ることも可能となる。<B> Since the conventional electric inclinometer is not used and has a simple structure consisting of a filling tube and a terminal device, the diameter of the measuring tube can be reduced, and the amount of excavation can be reduced. Further, it is possible to reduce the cost.
【００２３】＜ハ＞端末器具は個々に充填管と連通して
いるため、一か所が破損しても他の場所の測定に影響を
及ぼすことがなく、測定不能を回避することができる。<C> Since the terminal devices are individually communicated with the filling tube, even if one location is broken, it does not affect the measurement at the other location, so that measurement failure can be avoided.
【００２４】＜ニ＞測定中、流体を循環させるため、管
の変形による流路の体積変化や、流路途中の温度差の影
響など、計測結果に与える誤差等を相殺でき、測定精度
の向上を図ることができる。<D> Since the fluid is circulated during the measurement, errors in the measurement results, such as a change in the volume of the flow channel due to the deformation of the pipe and the effect of a temperature difference in the flow channel, can be offset, thereby improving measurement accuracy. Can be achieved.
【図１】 本発明の一実施の形態の説明図FIG. 1 is an explanatory diagram of an embodiment of the present invention.
【図２】 本発明の測定管内の構造の説明図FIG. 2 is an explanatory view of a structure inside a measurement tube of the present invention.
【図３】 本発明の測定管内の構造の説明図FIG. 3 is an explanatory view of the structure inside the measuring tube of the present invention.
【図４】 本発明の端末器具の説明図FIG. 4 is an explanatory view of a terminal device of the present invention.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 末松 ▲けん▼児 神奈川県横浜市西区平沼１丁目８番５号 株式会社エスコ内 (72)発明者 吉竹 敏明 兵庫県神戸市中央区西町35番地 株式会社 大林組神戸支店内 (72)発明者 居相 好信 兵庫県神戸市中央区西町35番地 株式会社 大林組神戸支店内 (72)発明者 谷口 信博 兵庫県神戸市中央区西町35番地 株式会社 大林組神戸支店内 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Suematsu ▲ Ken ▼ Child 1-8-5 Hiranuma, Nishi-ku, Yokohama-shi, Kanagawa Prefecture Esco Inc. (72) Inventor Toshiaki Yoshitake 35, Nishimachi, Chuo-ku, Kobe-shi, Hyogo Stock (72) Inventor Yoshinobu Iio 35-Nishimachi, Chuo-ku, Kobe-shi, Hyogo Prefecture Inside the Obayashi-Gumi Kobe Branch (72) Inventor Nobuhiro Taniguchi 35, Nishimachi, Chuo-ku, Kobe-shi, Hyogo Inside
Claims (1)
置し、 測定対象が沈下した際の前記管体の変位により発生する
流体圧差によって、 測定対象の沈下量を求めることを特徴とした、 沈下測定方法。1. A pipe filled with a fluid is set in a measuring object, and a settling amount of the measuring object is obtained by a fluid pressure difference generated by displacement of the pipe when the measuring object sinks. The settlement measurement method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP36221297A JPH11173842A (en) | 1997-12-11 | 1997-12-11 | Subsidence measuring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP36221297A JPH11173842A (en) | 1997-12-11 | 1997-12-11 | Subsidence measuring method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11173842A true JPH11173842A (en) | 1999-07-02 |
Family
ID=18476279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP36221297A Pending JPH11173842A (en) | 1997-12-11 | 1997-12-11 | Subsidence measuring method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11173842A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106480871A (en) * | 2016-11-28 | 2017-03-08 | 大连海大恒信土木工程技术有限公司 | A kind of automatization's settlement monitoring device and method being suitable for Yu Haiyang land reclamation construction usage |
-
1997
- 1997-12-11 JP JP36221297A patent/JPH11173842A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106480871A (en) * | 2016-11-28 | 2017-03-08 | 大连海大恒信土木工程技术有限公司 | A kind of automatization's settlement monitoring device and method being suitable for Yu Haiyang land reclamation construction usage |
| CN106480871B (en) * | 2016-11-28 | 2019-05-17 | 大连海大恒信土木工程技术有限公司 | A kind of automation settlement monitoring device and method being applicable in Yu Haiyang's land reclamation construction usage |
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