JP2001324430A - Deformation testing device and method - Google Patents
Deformation testing device and methodInfo
- Publication number
- JP2001324430A JP2001324430A JP2000141546A JP2000141546A JP2001324430A JP 2001324430 A JP2001324430 A JP 2001324430A JP 2000141546 A JP2000141546 A JP 2000141546A JP 2000141546 A JP2000141546 A JP 2000141546A JP 2001324430 A JP2001324430 A JP 2001324430A
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- Japan
- Prior art keywords
- loading
- shaft
- test
- deformation
- load
- Prior art date
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、試験体に所定の変
形を与えて、その時に必要となる力を調べる、いわゆる
変形試験を行うための変形試験装置およびこれを用いた
変形試験に関するものであって、特に岩石のように高強
度・高剛性の試験体に対して高精度の変形試験を可能と
したものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deformation test apparatus for performing a so-called deformation test by applying a predetermined deformation to a test body and examining a force required at that time, and a deformation test using the same. In addition, a high-precision deformation test can be performed particularly on a high-strength and high-rigidity test piece such as a rock.
【０００２】[0002]
【従来の技術】変形試験を行うための従来の、一般的な
試験装置の基本的な構成を図１に示す。載荷装置（１）
は、架台（２）に固設された載荷枠（３）に支持され、
発生させたい変位を対象物に作用させる荷重作用端を下
端に設けた載荷軸（４）を下方に突出させている。試験
体（５）は架台（２）に載置され上部には試験体載荷重
検出装置（６）と試験体変形検出装置（７）が取付けら
れている。なお該載荷枠（３）は門形が一般的である
が、表示の便宜のためこの図では片持ち梁で示してい
る。しかし機能は同じである。この載荷装置（１）は、
その一部である載荷軸（４）を軸方向に繰り出して試験
体（５）を圧縮変形させるか、あるいは載荷軸（４）と
試験体（５）を適当な治具で連結し、載荷軸（４）を引
き込んで試験体（５）を引張り変形させる装置である。
なお、上記のように載荷枠（３）は架台（２）に固定さ
れていて、試験中載荷装置（１）に加わる試験体（５）
からの力を該架台（２）に伝える役目をする。2. Description of the Related Art FIG. 1 shows a basic configuration of a conventional general test apparatus for performing a deformation test. Loading device (1)
Is supported by a loading frame (3) fixed to the gantry (2),
A loading shaft (4) provided at the lower end with a load acting end for applying a displacement to be generated to the object is projected downward. The test piece (5) is placed on a gantry (2), and a test piece load detection device (6) and a test piece deformation detection device (7) are mounted on the upper part. Although the loading frame (3) is generally of a gate shape, it is shown as a cantilever in this figure for convenience of display. But the function is the same. This loading device (1)
The loading shaft (4), which is a part of the loading shaft (4), is extended in the axial direction to compressively deform the test piece (5), or the loading shaft (4) and the test piece (5) are connected by an appropriate jig and This is a device that pulls in (4) and deforms the specimen (5) in tension.
The loading frame (3) is fixed to the gantry (2) as described above, and the test body (5) added to the loading device (1) during the test.
And serves to transmit the force from the cradle (2).
【０００３】この試験装置を用いて変形試験を行うに
は、載荷装置（１）と架台（２）の間に試験体（５）を
載置し、該載荷装置（１）の載荷軸（４）を該試験体
（５）に与えようとする変形量に等しい量だけ繰り出し
あるいは引き込んで該試験体（５）を圧縮変形あるいは
引っ張り変形させ、その時に試験体（５）に作用する力
を計測する。In order to carry out a deformation test using this test apparatus, a test body (5) is placed between a loading device (1) and a gantry (2), and a loading shaft (4) of the loading device (1) is placed. ) Is extended or retracted by an amount equal to the amount of deformation to be applied to the specimen (5) to compress or stretch the specimen (5), and the force acting on the specimen (5) at that time is measured. I do.
【０００４】[0004]
【発明が解決しようとする課題】一般に変形試験では、
試験中、載荷軸の繰り出し、あるいは引き込みに応じて
試験体に作用する力が変化するので、従来の図１のよう
な試験装置では載荷枠などの部材に作用する力も変化
し、そのためこれらの部材が変形する。そして載荷装置
はこれらの部材に支えられているので、この変形によっ
て載荷装置は試験体に対して相対的に変位することにな
る。そのため、試験を行う際に載荷装置を基準にして載
荷軸をある量正確に繰り出しあるいは引き込んだとして
も、その間に上記の通り載荷枠に作用する力の変化に起
因して載荷装置が試験体に対して相対変位するので、試
験体に与えられる正味の変形量は載荷軸の繰り出しある
いは引き込み量とは異なってしまう。Generally, in a deformation test,
During the test, the force acting on the test specimen changes in accordance with the extension or retraction of the loading shaft, so that in the conventional test apparatus as shown in FIG. 1, the force acting on members such as the loading frame also changes. Is deformed. Since the loading device is supported by these members, the deformation causes the loading device to be displaced relative to the test object. Therefore, even when the loading shaft is accurately extended or retracted by a certain amount with respect to the loading device when performing the test, the loading device is moved to the test piece due to the change in the force acting on the loading frame during that time as described above. Because of the relative displacement with respect to the test specimen, the net deformation given to the test specimen is different from the extension or retraction of the loading shaft.
【０００５】たとえば、岩石に対する変形試験では岩石
を円柱状に切り出して試験体とし、その上端に円柱の軸
方向に変形を与え、その時に試験体に作用する力を測定
する。ところが、岩石は極めて堅くかつ強度の大きい物
体なので、試験体自体の変形は比較的小さいが、試験中
に試験体に作用する力の変化は比較的大きく、従って、
試験中に載荷枠に作用する力の変化は比較的大きくなっ
て、その結果その間の載荷枠の変形も比較的大きくな
る。そのため、高精度に試験体の変形を制御しようとす
る場合は、試験体の変形に対してこれら試験装置の変形
が相対的に大きくなり、これら試験装置の変形が試験時
の制御誤差として問題になることがある。For example, in a deformation test on a rock, the rock is cut into a column to form a test body, and the upper end thereof is deformed in the axial direction of the cylinder, and the force acting on the test body at that time is measured. However, since rock is an extremely hard and strong object, the deformation of the specimen itself is relatively small, but the change in the force acting on the specimen during the test is relatively large, and therefore,
The change in force acting on the loading frame during the test is relatively large, so that the deformation of the loading frame during that time is also relatively large. Therefore, when trying to control the deformation of the test specimen with high accuracy, the deformation of these test equipment becomes relatively large with respect to the deformation of the test specimen, and the deformation of these test equipment becomes a problem as a control error during the test. May be.
【０００６】このような制御誤差を防ぐために、該載荷
枠の構造材料として鉄鋼材料などのような強固な金属を
利用したり、部材の断面積を大きくするなどの工夫がな
されているが、この変形を完全になくすことはできてい
ないし、実用上無視できる程度に小さくするだけでもそ
の実現には大きな困難を伴っているのが現状である。ま
た、所定の変形が試験体に与えられるように、これら載
荷枠の変形を見越して載荷軸を制御することも考えられ
るが、現状では必ずしもその変形の全てを的確に予測す
ることができるとは限らず、さらにこのような制御をす
るための特別な追加装置も必要となる。In order to prevent such control errors, various measures have been taken such as using a strong metal such as a steel material as the structural material of the loading frame, or increasing the sectional area of the member. At present, it is not possible to completely eliminate the deformation, and even if the size is reduced to a negligible level for practical use, there is a great difficulty in realizing it. In addition, it is conceivable to control the loading axis in anticipation of the deformation of these loading frames so that a predetermined deformation is given to the test specimen, but at present, it is not always possible to accurately predict all of the deformations. Not limited to this, a special additional device for performing such control is also required.
【０００７】[0007]
【課題を解決するための手段】本発明は、このような載
荷枠の変形をなくして変形試験における載荷枠変形によ
る制御誤差を解消したものである。The present invention eliminates such deformation of the loading frame and eliminates a control error due to the deformation of the loading frame in a deformation test.
【０００８】即ち本発明の変形試験装置は、架台に固設
された載荷枠に軸方向に移動しうる載荷軸を備えた載荷
装置を取付け、該載荷軸と該架台の間に試験体を設置し
て、該載荷軸を軸方向に繰り出しあるいは引き込んで該
試験体を圧縮変形させるかあるいは引張り変形させる変
形試験装置において、該載荷軸に載荷軸荷重検出装置を
設け、該載荷軸荷重検出装置よりも架台寄りの載荷軸
に、該載架枠とは独立して前記架台に固設された補助載
荷枠に取付けられた補助載荷装置の荷重作用端を連結
し、さらに該載荷軸荷重検出装置の出力により該補助載
荷装置の荷重作用端の出力荷重を制御することを特徴と
している。That is, in the deformation testing apparatus of the present invention, a loading device having a loading shaft movable in the axial direction is attached to a loading frame fixed to a gantry, and a test body is set between the loading shaft and the gantry. Then, in a deformation test apparatus for extending or retracting the loading shaft in the axial direction to compressively deform or tensilely deform the test body, a loading shaft load detecting device is provided on the loading shaft, and the loading shaft load detecting device The load application end of an auxiliary loading device attached to an auxiliary loading frame fixed to the frame independently of the mounting frame is also connected to the loading shaft near the mounting frame. The output load at the load application end of the auxiliary loading device is controlled by the output.
【０００９】また本発明の変形試験方法は本発明の変形
試験装置を用いるもので、載荷軸荷重検出装置の出力の
増減に応じて、この増減と同じ大きさだけ補助載荷装置
の荷重作用端の出力荷重を増減させることを特徴として
いる。Further, the deformation test method of the present invention uses the deformation test device of the present invention. In accordance with the increase or decrease of the output of the load shaft load detecting device, the load application end of the auxiliary loading device has the same size as the increase or decrease. It is characterized by increasing or decreasing the output load.
【００１０】本発明の試験装置の原理を図面に示す実施
態様に基いて説明すると、図２に示されるように、従来
の図１の試験装置にさらに加えて載荷軸（４）の中間部
に載荷軸荷重検出装置（８）を付加し、該載荷軸（４）
の先端部に、補助載荷装置（９）の荷重作用端である補
助載荷装置載荷軸（１０）を連結したものである。この
補助載荷装置（９）は補助載荷装置載荷軸（１０）を介
して載荷軸（４）に軸方向の任意の大きさの力を付与す
る機能を持ち、載荷枠（３）とは切り離されて架台
（２）に固定された補助載荷枠（１１）に固定されてい
る。なお、図２においても、図１の場合と同じ理由で補
助載荷枠（１１）は片持ち梁構造となっており、さらに
補助載荷装置載荷軸（１０）は載荷装置（１）の載荷軸
（４）とは水平方向に離れて表してあり両者は同軸上に
はないが、これらが同軸上にある場合と機能上変わりは
ないものである。The principle of the test apparatus according to the present invention will be described with reference to the embodiment shown in the drawings. As shown in FIG. 2, in addition to the conventional test apparatus shown in FIG. A loading shaft load detector (8) is added, and the loading shaft (4)
The auxiliary loading device loading shaft (10), which is the load application end of the auxiliary loading device (9), is connected to the distal end of the auxiliary loading device (9). The auxiliary loading device (9) has a function of applying an arbitrary magnitude of force in the axial direction to the loading shaft (4) via the auxiliary loading device loading shaft (10), and is separated from the loading frame (3). And is fixed to an auxiliary loading frame (11) fixed to the gantry (2). Also in FIG. 2, the auxiliary loading frame (11) has a cantilever structure for the same reason as in FIG. 1, and the auxiliary loading device loading shaft (10) is also the loading shaft (10) of the loading device (1). 4) is horizontally separated from each other, and they are not coaxial, but there is no functional difference from the case where they are coaxial.
【００１１】この装置を用いて変形試験を行う際には、
載荷装置（１）の載荷軸（４）を試験体（５）に与えた
い変形量分だけ繰り出しあるいは引き上げる。その際、
該載荷軸（４）に作用する軸力である載荷軸荷重検出装
置（８）の出力を常時監視し、これが増減した場合に
は、補助載荷装置（９）の出力荷重を制御して載荷軸
（４）に荷重を加えることにより、該載荷軸荷重検出装
置（８）の出力が元の値に戻るようにする点に本発明の
特徴がある。このようにすれば、変形試験中、載荷枠
（３）には常に一定の力しか作用しないので、これには
変形は発生せず、従って試験中の載荷枠（３）への作用
力の変化による載荷枠（３）の試験体（５）に対する相
対変位も生じないので、上述のこれらの変形による制御
誤差が防止できることになる。When performing a deformation test using this apparatus,
The loading shaft (4) of the loading device (1) is extended or pulled up by an amount of deformation desired to be applied to the test body (5). that time,
The output of the loading shaft load detector (8), which is the axial force acting on the loading shaft (4), is constantly monitored. If the output increases or decreases, the output load of the auxiliary loading device (9) is controlled to control the loading shaft. The present invention is characterized in that the output of the loaded shaft load detecting device (8) is returned to the original value by applying a load to (4). In this way, during the deformation test, only a constant force acts on the loading frame (3), so that no deformation occurs on the loading frame (3), and thus the change in the acting force on the loading frame (3) during the test. No relative displacement of the loading frame (3) with respect to the test body (5) is caused by the above, so that control errors due to these deformations described above can be prevented.
【００１２】なお、試験開始に先立って、補助載荷装置
（９）によって予め適当な大きさの力を載荷装置（１）
に付与しておき、この力を基準として変形試験を開始す
ると、載荷装置（１）、載荷枠（３）及び架台（２）相
互の結合部のガタによる変形誤差を解消することができ
る。さらには、載荷装置（１）においても、これに対す
る作用力が変化すると同様の原理でこれに変形が生じ、
そのための制御誤差が生ずることも考えられるが、上述
のように予め適当な大きさの力を載荷装置（１）に付与
することによって、載荷装置（１）に対する作用力も一
定となりこれの変形による制御誤差も同様に防ぐことが
できる。Prior to the start of the test, an appropriate amount of force is applied to the loading device (1) by the auxiliary loading device (9).
When the deformation test is started on the basis of this force, it is possible to eliminate the deformation error due to the play of the connecting portion between the loading device (1), the loading frame (3) and the gantry (2). Further, also in the loading device (1), if the acting force on the loading device changes, the deformation occurs on the same principle,
Although it is conceivable that a control error for this may occur, by applying a force of an appropriate magnitude in advance to the loading device (1) as described above, the acting force on the loading device (1) becomes constant, and the control by deformation thereof is performed. Errors can be prevented as well.
【００１３】[0013]
【実施例】図３は本発明の典型的な適用例を示したもの
であって原理的には図２の試験装置と同様であるが、多
くの部材や装置を載荷軸（４）を中心とする対称形状及
び対称配置としたものである。なお本例では補助載荷装
置（９）の荷重作用端と載荷軸（４）との連結間にバネ
（１２）が挿入されているが、これは補助載荷装置
（９）の制御に誤差が生じても、その影響が直接載荷軸
荷重検出装置（８）ひいては載荷軸（４）に直には伝わ
りにくいようにして、補助載荷装置（９）からの制御を
容易にするためのもので、必ずしも必須ではない。FIG. 3 shows a typical application of the present invention, which is similar in principle to the test apparatus shown in FIG. 2, except that many members and devices are arranged around a loading shaft (4). And a symmetrical arrangement. In this example, the spring (12) is inserted between the connection between the load application end of the auxiliary loading device (9) and the loading shaft (4), but this causes an error in the control of the auxiliary loading device (9). However, the influence is not easily transmitted directly to the loading shaft load detecting device (8) and thus to the loading shaft (4), so that the control from the auxiliary loading device (9) is facilitated. Not required.
【００１４】本発明例では載荷装置（１）を構成する主
要部品は、ステッピングモーターとそのモ−タ−軸に直
結する精密なボールネジである。ステッピングモーター
は、パルス駆動でモータ―軸の回転角度が正確に制御で
き、この回転角度に比例してボールネジが正確に繰り出
され、あるいは引き込まれるようになっている。従って
ステッピングモーターに与えるパルスを調節することに
よって載荷軸（４）の変位を希望通りに正確に制御でき
るようになっている。さらに補助載荷装置（９）にはセ
ンターホール型の油圧ジャッキを使用する。該補助載荷
装置（９）は、載荷軸荷重検出装置（８）のストレンゲ
ージ型のセンサー（ロードセル）とそれ専用のストレン
ゲージ用アンプ（１３）で構成される荷重検出装置から
の出力を用い油圧サーボ系油圧ジャッキ制御装置（１
４）によりフイードバック方式で制御されるもので、載
荷軸（４）に作用する荷重が増加、減少すると載荷軸荷
重検出装置（８）の出力が増加、減少し、載荷軸（４）
に作用する荷重の増減を打ち消すように油圧ジャッキの
出力を自動的に増加、減少するようになっている。なお
図中の試験体載荷重検出装置（６）もストレンゲージ式
ロードセルである。In the embodiment of the present invention, the main components constituting the loading device (1) are a stepping motor and a precise ball screw directly connected to the motor shaft. In the stepping motor, the rotation angle of the motor shaft can be accurately controlled by pulse driving, and the ball screw is accurately fed or retracted in proportion to the rotation angle. Therefore, by adjusting the pulse applied to the stepping motor, the displacement of the loading shaft (4) can be controlled exactly as desired. Further, a center hole type hydraulic jack is used for the auxiliary loading device (9). The auxiliary loading device (9) uses an output from a load detecting device composed of a strain gauge type sensor (load cell) of a loading shaft load detecting device (8) and a dedicated strain gauge amplifier (13) to use hydraulic pressure. Servo hydraulic jack control device (1
The output of the loading shaft load detector (8) increases and decreases when the load acting on the loading shaft (4) increases or decreases, and the loading shaft (4) is controlled.
The output of the hydraulic jack is automatically increased or decreased so as to cancel the increase or decrease in the load acting on the hydraulic jack. In addition, the test-body-load detecting device (6) in the figure is also a strain gauge type load cell.
【００１５】このような構成の本発明の試験装置によれ
ば、ステッピングモーターの回転を制卸して載荷軸
（４）に所定の変位を与えた時、試験体（５）に作用す
る力が変化しても、その力の変化は補助載荷装置（９）
の出力の増減によって補われ、載荷枠（３）や載荷装置
（１）に作用する力は常に一定に保たれるので、これら
に変形は生ぜず、試験体（５）には載荷軸（４）に与え
た変形通りの変形を与えることができることになる。According to the test apparatus of the present invention having such a configuration, when the rotation of the stepping motor is controlled and a predetermined displacement is applied to the loading shaft (4), the force acting on the test body (5) changes. Even if the change in the force, the auxiliary loading device (9)
Since the force acting on the loading frame (3) and the loading device (1) is always kept constant, no deformation occurs in these components, and the loading shaft (4) is attached to the test piece (5). ) Can be given as the deformation given.
【００１６】図４は、上記図３の本発明試験装置を用い
て岩石の変形試験を行った時の、試験体（５）と載荷軸
（４）に作用した力の測定結果を同じ図上に示したもの
である。装置の作動誤差によって多少は変動している
が、試験体（５）に最大３０トン以上の力を作用させた
ところ、その間に載荷軸（４）に作用した力の変化は約
３０キログラム（０．０３トン）程度であり、試験体
（５）への作用力に比べると極めて小さい力の変化しか
載荷枠（３）には発生していない。これに対して、載荷
枠（３）の断面積形状が本発明例と等しい従来の試験装
置を用いて、図４に係る試験と同じ条件の試験を行った
場合は、載荷軸（４）への作用力、即ち載荷枠（３）へ
の作用力は試験体（５）への作用力と同じでほぼ３０ト
ンである。従って試験中の載荷枠（３）の変形量を、本
発明例と従来の試験装置とで比較すると、この変形量は
作用する力に比例するから本発明例の場合は、従来の試
験装置の場合の０．０３／３０＝１／１０００と計算さ
れ、本発明の効果は明らかである。FIG. 4 shows the measurement results of the forces acting on the test body (5) and the loading shaft (4) when a rock deformation test is performed using the test apparatus of the present invention shown in FIG. This is shown in FIG. Although it fluctuates somewhat due to the operation error of the apparatus, when a force of 30 tons or more was applied to the test piece (5), the change in the force applied to the loading shaft (4) during that time was about 30 kg (0 kg). .03 tons), and only a very small change in force compared to the acting force on the test body (5) occurs in the loading frame (3). On the other hand, when a test under the same conditions as the test according to FIG. 4 was performed using a conventional test apparatus in which the cross-sectional area of the loading frame (3) is equal to that of the present invention, the loading shaft (4) , Ie, the acting force on the loading frame (3) is the same as the acting force on the test body (5), and is approximately 30 tons. Therefore, when the amount of deformation of the loading frame (3) during the test is compared between the present invention and the conventional test device, the amount of deformation is proportional to the acting force. In this case, 0.03 / 30 is calculated as 1/1000, and the effect of the present invention is clear.
【００１７】[0017]
【発明の効果】このように本発明によれば、変形試験に
おいて試験装置の構成そのものに起因する試験誤差を、
簡単な構造の補助装置を取付けることにより自動的に消
去できるのでより正確な試験結果を得ることが可能とな
る。特に岩石のような高強度・高剛性の試験体の変形試
験において一層有効である。また、従来の試験装置で
は、強度的には十分でも、この測定誤差を減少させたい
がために大きな断面積の載荷枠が用いられていたが、本
発明によれば必要強度に応じた断面積の載荷枠とすれば
よく、経済的である。As described above, according to the present invention, in the deformation test, the test error caused by the configuration of the test apparatus itself is reduced.
By attaching an auxiliary device having a simple structure, the data can be automatically erased, so that more accurate test results can be obtained. Particularly, it is more effective in a deformation test of a high-strength and high-rigidity test piece such as rock. Further, in the conventional test apparatus, a loading frame having a large cross-sectional area is used in order to reduce the measurement error even if the strength is sufficient. However, according to the present invention, the cross-sectional area according to the required strength is used. This is economical.
【図１】従来の変形試験装置を示す説明図である。FIG. 1 is an explanatory view showing a conventional deformation test apparatus.
【図２】本発明の変形試験装置の原理を示す説明図であ
る。FIG. 2 is an explanatory view showing the principle of the deformation test device of the present invention.
【図３】本発明の変形試験装置の実施例を示す説明図で
ある。FIG. 3 is an explanatory view showing an embodiment of a deformation test apparatus according to the present invention.
【図４】本発明変形試験装置による試験結果を示す線図
である。FIG. 4 is a diagram showing test results obtained by the deformation test apparatus of the present invention.
１ 載荷装置 ２ 架台 ３ 載荷枠 ４ 載荷軸 ５ 試験体 ６ 試験体載荷重検出装置 ７ 試験体変形検出装置 ８ 載荷軸荷重検出装置 ９ 補助載荷装置 １０ 補助載荷装置載荷軸 １１ 補助載荷枠 １２ バネ １３ ストレンゲージ用アンプ １４ 油圧ジャッキ制御装置 REFERENCE SIGNS LIST 1 loading device 2 gantry 3 loading frame 4 loading shaft 5 test body 6 test body loading detection device 7 test sample deformation detection device 8 loading shaft load detection device 9 auxiliary loading device 10 auxiliary loading device loading shaft 11 auxiliary loading frame 12 spring 13 Strain gauge amplifier 14 Hydraulic jack controller
Claims (2)
うる載荷軸を備えた載荷装置を取付け、該載荷軸と該架
台の間に試験体を設置して、該載荷軸を軸方向に繰り出
しあるいは引き込んで該試験体を圧縮変形させるかある
いは引張り変形させる変形試験装置において、該載荷軸
に載荷軸荷重検出装置を設け、該載荷軸荷重検出装置よ
りも架台寄りの載荷軸に、該載架枠とは独立して前記架
台に固設された補助載荷枠に取付けられた補助載荷装置
の荷重作用端を連結し、さらに該載荷軸荷重検出装置の
出力により該補助載荷装置の荷重作用端の出力荷重を制
御することを特徴とする変形試験装置。A loading device provided with a loading shaft that can move in the axial direction is attached to a loading frame fixed to a gantry, a test body is installed between the loading shaft and the gantry, and the loading shaft is mounted on the loading frame. In a deformation testing device that extends or retracts in the axial direction to compressively deform or tensilely deform the test body, a loading shaft load detecting device is provided on the loading shaft, and the loading shaft is closer to the gantry than the loading shaft load detecting device. Independently of the mounting frame, connecting a load application end of an auxiliary loading device attached to an auxiliary loading frame fixed to the mount, and further outputting the auxiliary loading device by an output of the loading shaft load detecting device. A deformation test apparatus for controlling an output load at a load application end.
軸荷重検出装置の出力の増減に応じて、この増減と同じ
大きさだけ補助載荷装置の荷重作用端の出力荷重を増減
させることを特徴とする変形試験方法。2. The deformation test device according to claim 1, wherein the output load of the load application end of the auxiliary loading device is increased or decreased by the same amount as the increase or decrease of the output of the loaded shaft load detector. Deformation test method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000141546A JP2001324430A (en) | 2000-05-15 | 2000-05-15 | Deformation testing device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000141546A JP2001324430A (en) | 2000-05-15 | 2000-05-15 | Deformation testing device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001324430A true JP2001324430A (en) | 2001-11-22 |
Family
ID=18648643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000141546A Pending JP2001324430A (en) | 2000-05-15 | 2000-05-15 | Deformation testing device and method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001324430A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102230869A (en) * | 2011-03-31 | 2011-11-02 | 长江水利委员会长江科学院 | Tester of on-site rheology of rock mass and its testing method |
| CN104132847A (en) * | 2014-08-04 | 2014-11-05 | 河海大学 | Device and method for testing chloride corrosion of reinforced concrete member under continuous load |
| WO2015176508A1 (en) * | 2014-05-22 | 2015-11-26 | 中国矿业大学 | Device and method using infrared radiation to observe coal rock fracture development process |
-
2000
- 2000-05-15 JP JP2000141546A patent/JP2001324430A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102230869A (en) * | 2011-03-31 | 2011-11-02 | 长江水利委员会长江科学院 | Tester of on-site rheology of rock mass and its testing method |
| WO2015176508A1 (en) * | 2014-05-22 | 2015-11-26 | 中国矿业大学 | Device and method using infrared radiation to observe coal rock fracture development process |
| US9964475B2 (en) | 2014-05-22 | 2018-05-08 | China University Of Mining And Technology | Device and method using infrared radiation to observe coal rock fracture development process |
| CN104132847A (en) * | 2014-08-04 | 2014-11-05 | 河海大学 | Device and method for testing chloride corrosion of reinforced concrete member under continuous load |
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