JP2000338021A

JP2000338021A - Movement vibration fatigue-testing device

Info

Publication number: JP2000338021A
Application number: JP11182196A
Authority: JP
Inventors: Akikazu Kida; 哲量木田; Tadashi Abe; 忠阿部; Kazuo Nishimura; 和雄西村
Original assignee: SERVO TECHNOS KK
Current assignee: SERVO TECHNOS KK
Priority date: 1999-05-26
Filing date: 1999-05-26
Publication date: 2000-12-08

Abstract

PROBLEM TO BE SOLVED: To carry out various configuration tests while an actual load is being applied by reciprocating a sample in a horizontal direction by a truck and a crank mechanism. SOLUTION: The device is equipped with a load device 1, a roller 2, a support rod 3, a truck 5, a rail 7, a movement device 8, a counterforce frame 9, and the like. In this configuration, the load device 1 in a vertical direction is interlocked to a post by the support rod 3, and a sample 4 on the truck 5 is moved by a driving device with the truck 5, thus actually evaluating the vibration and bridge beam of a traveling vehicle being generated by, for example, the influence of the unevenness of a road surface and the step of an expansion joint, the vibration problem of a structure, or the like.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本試験装置は、材料および部
材に作用する荷重を再現し、ある範囲に渡って作用させ
る試験装置である。例えば、自動車・列車などの走行時
にみられるような、変動し、且つ移動する荷重の影響を
受ける材料・構造物の強度および疲労耐久試験に使われ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present test apparatus is a test apparatus which reproduces a load acting on a material and a member and applies the load over a certain range. For example, it is used for strength and fatigue endurance tests of materials and structures that are affected by fluctuating and moving loads, such as those encountered when running automobiles and trains.

【０００２】[0002]

【従来の技術】従来の同様の構造物試験装置（図２）で
は、供試体を固定し、荷重装置１を移動するが、反力フ
レーム９と荷重装置１の構造が大掛りとなり、容易な試
験とはなっていなかった。2. Description of the Related Art In a conventional similar structure testing apparatus (FIG. 2), a test piece is fixed and a load device 1 is moved. However, the structure of the reaction force frame 9 and the load device 1 becomes large and easy. It was not a test.

【０００３】[0003]

【発明が解決しようとする課題】荷重装置１を円滑に且
つある程度の速さで移動させるには、反力フレーム９へ
の固い取付が必要であり、水平方向の力によるモーメン
トを低減するには、荷重装置１の先端を支持する必要が
あると考えた。In order to move the load device 1 smoothly and at a certain speed, it is necessary to firmly attach the load device 1 to the reaction frame 9, and to reduce the moment due to the horizontal force. It was considered necessary to support the tip of the load device 1.

【０００４】[0004]

【問題を解決するための手段】本装置では、鉛直方向
の荷重装置１を支持棒３で支柱に連結し、台車上の供
試体４を駆動装置で台車５ごと移動させる方法を考案
し、従来より容易な方法で且つより速い速度の条件下で
試験が可能となった。In this apparatus, a method is proposed in which a vertical load device 1 is connected to a support by a support rod 3 and a specimen 4 on the carriage is moved together with the carriage 5 by a drive unit. Testing has become possible in an easier way and under faster speed conditions.

【０００５】[0005]

【発明の実施の形態】本装置の実施例（図１）について
説明する。供試体は、支点間約２．０ｍの鉄筋コンクリ
ートの梁で、一定の荷重および振動する変動荷重を作用
させて２．０ｍ間を走行させている。図３は一定な荷重
で走行させた場合であり、図４は一定な荷重５８．８ｋ
Ｎ、８８．２ｋＮの±２０％の振幅の正弦波形による振
動荷重を２Ｈｚで作用させたものである。両試験におい
ての荷重・走行状態は試験体の表面の凹凸による±１．
５ｋＮ程度の荷重変動を忠実に再現していることが確認
できる。したがって、本移動振動疲労試験装置を用いて
次の様な試験が可能である。（１）一定荷重による試験（図５ａ）（２）走行振動荷重による試験（図５ｂ）（３）その他上記の組み合わせによる試験DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present apparatus (FIG. 1) will be described. The specimen is a reinforced concrete beam with a fulcrum of about 2.0 m, and runs for 2.0 m under a constant load and a vibrating variable load. FIG. 3 shows a case where the vehicle is driven with a constant load, and FIG.
N, a vibration load having a sinusoidal waveform having an amplitude of ± 20% of 88.2 kN was applied at 2 Hz. The load and running conditions in both tests were ± 1.
It can be confirmed that the load variation of about 5 kN is faithfully reproduced. Therefore, the following test can be performed using the present mobile vibration fatigue test apparatus. (1) Test under constant load (Fig. 5a) (2) Test under running vibration load (Fig. 5b) (3) Test using other combinations

【０００６】[0006]

【発明の効果】本装置を用いて、種々の構造試験が容易
に実際的な荷重を載荷した状態で行われることが期待で
きる。例えば、路面の凹凸や伸縮継手の段差の影響によ
り生じた走行車両の振動と橋梁および構造物の振動問題
についても一層現実的な評価が可能となる。According to the present invention, it can be expected that various structural tests can be easily performed with a practical load applied. For example, it is possible to more realistically evaluate the vibration of the traveling vehicle and the vibration of the bridge and the structure caused by the influence of the unevenness of the road surface and the step of the expansion joint.

【図面の簡単な説明】[Brief description of the drawings]

【図１】本発明の試験装置FIG. 1 is a test apparatus of the present invention.

【図２】従来の試験装置例Fig. 2 Example of conventional test equipment

【図３】鉄筋コンクリート梁上の走行試験（一定荷重）Fig. 3 Running test on reinforced concrete beams (constant load)

【図４】鉄筋コンクリート梁の走行試験（振動荷重）FIG. 4 Running test of reinforced concrete beams (vibration load)

【図５】移動振動疲労試験装置による試験法の例FIG. 5 shows an example of a test method using a moving vibration fatigue test apparatus.

【符号の説明】[Explanation of symbols]

１荷重装置２ローラー３支持棒４供試体５台車６電動機７レール８移動装置９反力フレーム DESCRIPTION OF SYMBOLS 1 Load device 2 Roller 3 Support bar 4 Specimen 5 Dolly 6 Electric motor 7 Rail 8 Moving device 9 Reaction frame

Claims

【特許請求の範囲】[Claims]

【請求項１】材料および部材の強度・耐久性の試験を
行うため、供試体を台車およびクランク機構にて水平方
向に往復運動させて移動振動疲労試験を行う装置（図
１）。An apparatus for performing a moving vibration fatigue test by reciprocating a specimen in a horizontal direction with a bogie and a crank mechanism in order to perform a strength / durability test of materials and members (FIG. 1).