JP3913886B2 - Fixture for deformed bar tensile testing machine - Google Patents

Fixture for deformed bar tensile testing machine Download PDF

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Publication number
JP3913886B2
JP3913886B2 JP04957998A JP4957998A JP3913886B2 JP 3913886 B2 JP3913886 B2 JP 3913886B2 JP 04957998 A JP04957998 A JP 04957998A JP 4957998 A JP4957998 A JP 4957998A JP 3913886 B2 JP3913886 B2 JP 3913886B2
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Prior art keywords
fixture
deformed
frame
fastening member
testing machine
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JPH11248611A (en
Inventor
立 内海
茂樹 岩渕
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SANKO TECHONO CO.,LTD.
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SANKO TECHONO CO.,LTD.
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Description

【０００１】
【発明の属する技術分野】
本発明は、異形鉄筋の引張耐力の試験機に使用される異形鉄筋の固定具に関する。
【０００２】
【従来の技術】
コンクリートに埋設した異形鉄筋（以下、異形筋という。）の引張耐力の試験機は、図４（ａ）、（ｂ）に示すように、異形筋３０に試験機３１の中心貫通孔４３を挿通させて埋設面上に配置し、試験機３１の上方で異形筋３０に固定具４４を取り付け、試験機３１の押上部材３２を油圧等で押上げてその上面を固定具４４に圧接させ、固定具４４と埋設面の間に圧縮力をかけて異形筋３０の引張耐力の試験を行っている。上記試験機において、耐力測定は、圧力計を用いたり、試験機に組み込まれた中心貫通孔を有する荷重測定部を用いて行う。
【０００３】
従来の上記固定具として、一般に図５に示すようなものが知られている。この固定具は、中央部に形成された切頭円錐形の貫通孔５３を有する円筒状の枠体５１（以下、円筒枠体という。）と、側面が同じく円錐形に形成され、異形筋を半円筒状の凹溝５８，５９で左右両側から挟持する一対の楔形の締結部材５６，５７から構成されている。
【０００４】
この固定具４４の異形筋３０への取り付けは、図４、図５に示すように、まず、円筒枠体５１を、異形筋３０に挿通させて、試験機３１の上面に載置し、次いで異形筋３０の所望箇所に、締結部材５６，５７を左右両側から挟持状に当てがい、その外側に円筒枠体５１を嵌合させてその貫通孔内で、締結部材５６，５７の外周面と貫通孔の内周面を摺動させて行う。
【０００５】
試験に際しては、図４（ｂ）に示すように、試験機３１に内蔵する円筒状の押上部材３２が、油圧等の手段により試験機３１の上面から突出して、円筒枠体５１の下面に当接しＡ方向に押上げると、締結部材５６，５７の外周面が、Ｂ方向に押圧されるので、固定具４４は、異形筋３０に強固に固定され、さらに、押上部材３２が上昇することにより、固定具４４と異形筋３０の埋設面間、即ち、試験機３１に圧縮力がかかり、異形筋の引張荷重が測定される。
【０００６】
【発明が解決しようとする課題】
従来の固定具は、上記のようにして異形筋の引張耐力試験を行った後、試験機３１の押上部材３２を下げ、円筒枠体５１の上面をハンマー等で叩いて締結部材５６，５７から外し、次いでこれらの締結部材を異形筋３０から取り外していたが、円筒枠体５１が締結部材５６，５７から容易に外れないという問題があった。
【０００７】
固定具４４が異形筋３０から外せないと、試験機３１も異形筋３０から外せないため、円筒枠体５１の上面を強打するが、それでも外れず、止むを得ず異形筋３０を切断して試験機３１を取り外す場合もある。ちなみに、２０〜２５ｔの引張耐力試験を行った場合に、６ｔの荷重を掛けなければ異形筋から固定具が外れなかった例もある。
さらに、円筒枠体５１の上面を強打して固定具４４を異形筋３０から取り外すため、固定具を叩き落とした瞬間に試験機３１に衝撃を加えて傷めてしまうといった問題もあった。
【０００８】
本発明者は、かかる点に鑑み、研究を重ねた結果、円筒枠体の貫通孔の内周面と、それに摺動する一対の締結部材の外周面が円錐面であると、部分的な突出変形が起き易く、貫通孔の内周面と締結部材の外周面が全面に密着しにくくなることに着目し、貫通孔内周面と締結部材の外周面が全面にわたって密着して摺動できる構成とすることにより上記問題を解決できることを見い出した。
従って、本発明の課題は、従来の固定具と同等の固定機能を有し、試験後に取り外しが容易な異形筋引張試験用固定具を提供することにある。
【０００９】
【課題を解決するための手段】
本発明の異形筋引張試験機用固定具（以下、固定具という。）は、中央部に一方の対向面が下方中心に向けて平面状に傾斜している貫通孔を有する升形の枠体と、異形鉄筋を左右両側から挟持して上記貫通孔に挿入される一対の楔形の締結部材とから構成されている。
上記升形の枠体は、その貫通孔の一方の対向面が下方中心に向けて平面状に傾斜している。この傾斜角度は、通常、５〜３０度、好ましくは８〜１２度であり、一対の締結部材の外側テーパー面の傾斜角度とほぼ同じに形成させる。
なお、升形の枠体の外形は、通常、直方体に形成されるが、これに限定されるものではなく、中央に四角形の貫通孔を有すれば、円形、楕円形等の各種の形状であっても良い。
【００１０】
一対の締結部材は、その外側テーパー面が貫通孔の上記傾斜面を全面にわたって摺動し得るように、上記貫通孔の一対の対向面と同じ、平面状に形成され、締結部材の外側テーパー面は上記貫通孔の対向面の傾斜面とほぼ同じ角度を有している。
この一対の締結部材には、異形筋の挟持面にそれぞれ、溝又は滑り止めを形成して異形筋への挟持性を高めると良い。上記溝としては、半円筒状の凹溝や、断面Ｖ字状の凹溝に形成するのが好ましく、また異形筋の平板状の挟持面に滑り止め用の突起を設けても良い。
【００１１】
上記締結部材には、その上部周側面に枠体の上面に対面するフランジを一体状に設けると良い。フランジを設けることにより、枠体を締結部材より簡単に取り外すことができる。すなわち、フランジと枠体の上面間にドライバー状の差込部材をこじ入れることにより、枠体は締結部材から容易に取り外せる。
そのため、フランジには、枠体の上面との間に上記差込部材用の差込口を形成すると良い。
【００１２】
また、このフランジには、貫通するネジ孔を形成すると良い。このような構成とすることにより、異形筋からの取り外しに際し、上記ネジ孔にボルトを螺合させて締結すると、ボルトの先端が枠体の上面に当たって、締結部材が枠体から離れるため、容易に枠体を外すことができる。
【００１３】
異形筋の挟持面に凹溝を形成した場合には、凹溝の内面に、横方向に間隔をあけて複数の突条のフシを形成すると良い。このフシは、異形筋への締め付けを効果的にするものであり、通常、高さが０．５〜３ｍｍの突条で、０．５〜６ｍｍの等間隔に形成するのが好ましい。
【００１４】
【発明の実施の形態】
次に、添付図面により、本発明の固定具の実施の形態について説明する。
図１は、本発明の固定具の升形枠体の一例を示す斜視図である。また、図２は、本発明の固定具の一例を示すもので、（ａ）は締結部材の斜視図、（ｂ）はこの締結部材の使用状態を示す模式的断面図、（ｃ）は更に別の例の締結部材を用いた本発明の固定具の模式的断面図である。
【００１５】
図２に示すように、本発明の固定具は、升形の枠体１と一対の楔形の締結部材２，２’から構成されている。
枠体１は、図２に示すように、四角形の貫通孔３が開けられ、この貫通孔３の一方の対向面４、５は下方中心に向けて傾斜した平面状に形成されている。一対の締結部材２，２’は、その外側面６，７が平面状でテーパーになった楔形で、その内側面には、異形筋を左右両側から挟持し得る半円筒状の凹溝８，９が形成され、それらの凹溝には、内周面に沿って突条のフシ１０が等間隔に形成されている。
【００１６】
図２（ａ）で示す締結部材では、その上部周側面に枠体１の上面Ｃに対面するフランジ１８，１８’が一体に形成され、このフランジには、貫通するネジ孔１９，１９’がそれぞれ形成され、これらのネジ孔には、図２（ｂ）で示すように、ボルト２０，２０’が装着されている。
さらに、図２（ｃ）で示す締結部材のフランジ２８，２８’の下面には、差込口２９が設けられている。
【００１７】
本発明の固定具を、異形筋に取り付けるには、図３に示すように枠体１を異形筋３０に挿通させて、すでに異形筋３０に取り付けた試験機３１の上面に載せる。
次に、枠体１の上部の異形筋３０の所望箇所に、締結部材２，２’の半円筒状の凹溝８，９をテーパー先端部を下方に向けて左右両側から挟持させた後、枠体１を締結部材２，２’のテーパー先端部から挿通させることにより、固定具は、異形筋３０に取り付けられる。
【００１８】
試験機による、異形筋の引張耐力の測定は［０００５］で詳述したように、試験機３１の押上部材３２を油圧等で上げ、固定具の枠体１の下面を押圧することにより固定具は異形筋３０に強固に固定され、固定具と異形筋の埋設面との間に圧縮力をかけることにより異形筋の引張耐力が測定される。
【００１９】
測定後の固定具の取り外しは、試験機３１の押上部材３２を下げ、枠体の側面３３，３３’を軽くハンマー等で叩くことにより、枠体１は締結部材２，２’から簡単に外れ、従来の固定具のように枠体１の上面をハンマー等によって強打する必要がない。
【００２０】
あるいは、図２（ａ）、（ｂ）に示したフランジ１８，１８’のネジ孔１９，１９’に装着させたボルト２０，２０’を締結することにより、ボルトの先端が枠体１の上面Ｃを押すので枠体１を簡単に取り外すことができる。また、図２（ｃ）に示したフランジ２８，２８’を形成させた締結部材では、フランジの下面に設けた差込口２９に差込部材をこじ入れることにより、枠体を締結部材から容易に取り外すことができる。
【００２１】
【発明の効果】
本発明の固定具によれば、異形筋引張試験機による異形筋の引張耐力の測定後に、枠体を締結部材から容易に取り外すことができるので、作業効率が高まる。また、従前の固定具のように、枠体を強打して変形させることもないので固定具の寿命を大幅に延ばすことができる。さらに、固定具を異形筋から取り外す際に、枠体が落下して試験機に衝撃を加えて傷めることもない。
【図面の簡単な説明】
【図１】本発明の固定具に係る枠体の一例を示す斜視図である。
【図２】本発明の固定具の一例を示すもので、（ａ）は締結部材の斜視図、（ｂ）はこの固定具の使用状態を示す模式的断面図であり、（ｃ）は別の例の締結部材を用いた本発明の固定具の模式的断面図である。
【図３】従来の固定具の使用状態を示す模式的側面図である。
【図４】従来の固定具の使用状態を示すもので、（ａ）は異形筋に取付けた状態の模式的断面図、（ｂ）は異形筋に取付けた試験機の斜視図である。
【図５】従来の固定具を示すもので、（ａ）は締結部材の斜視図、（ｂ）は枠体の斜視図である。
【符号の説明】
１ 枠体
２，２’ 締結部材
３ 枠体の貫通孔
４，５ 貫通孔の一方の対向面
６，７ 締結部材の外側テーパー面
８，９， 締結部材の半円筒状の凹溝
１０ フシ
１８，１８’；２８，２８’フランジ
１９，１９’ネジ孔
２０，２０’ボルト
２９ 差込口
３０ 異形筋
３１ 試験機
３２ 押上部材
３３，３３’枠体の側面
４３ 試験機の中心貫通孔
４４ 固定具
５１ 円筒枠体
５６，５７ 締結部材
５８，５９ 半円筒状の凹溝[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a deformed bar fixing tool used in a tensile strength tester for deformed bars.
[0002]
[Prior art]
As shown in FIGS. 4 (a) and 4 (b), the tensile strength tester for deformed reinforcing bars (hereinafter referred to as deformed bars) embedded in concrete is inserted into the deformed bar 30 through the central through hole 43 of the testing machine 31. The fixing tool 44 is attached to the deformed muscle 30 above the testing machine 31, the push-up member 32 of the testing machine 31 is pushed up by hydraulic pressure, etc., and the upper surface thereof is pressed against the fixing tool 44 and fixed. The tensile strength test of the deformed muscle 30 is performed by applying a compressive force between the tool 44 and the embedded surface. In the test machine, the proof stress measurement is performed using a pressure gauge or a load measuring unit having a central through hole incorporated in the test machine.
[0003]
As the above-mentioned conventional fixture is as shown in FIG. 5 are generally known. This fixture has a cylindrical frame body 51 (hereinafter referred to as a cylindrical frame body) having a frustoconical through-hole 53 formed at the center, and a side surface that is also formed in a conical shape, and has deformed muscles. It is composed of a pair of wedge-shaped fastening members 56 and 57 that are sandwiched from left and right sides by semi-cylindrical concave grooves 58 and 59.
[0004]
As shown in FIGS. 4 and 5 , the fixing tool 44 is attached to the deformed muscle 30. First, the cylindrical frame 51 is inserted into the deformed muscle 30 and placed on the upper surface of the testing machine 31. Fastening members 56 and 57 are applied to desired locations of deformed muscle 30 from both the left and right sides, and cylindrical frame 51 is fitted to the outside thereof, and the outer peripheral surfaces of fastening members 56 and 57 are inserted into the through holes. This is done by sliding the inner peripheral surface of the through hole.
[0005]
In the test, as shown in FIG. 4 (b), the cylindrical push-up member 32 built in the tester 31, and protrudes from the upper surface of the tester 31 by means of the hydraulic or the like, against the lower surface of the cylindrical frame 51 When the contact member is pushed up in the A direction, the outer peripheral surfaces of the fastening members 56 and 57 are pressed in the B direction, so that the fixture 44 is firmly fixed to the deformed muscle 30 and the push-up member 32 is raised. A compression force is applied between the embedding surface of the fixture 44 and the deformed muscle 30, that is, the testing machine 31, and the tensile load of the deformed muscle is measured.
[0006]
[Problems to be solved by the invention]
In the conventional fixture, after the tensile strength test of the deformed muscle is performed as described above, the push-up member 32 of the testing machine 31 is lowered, and the upper surface of the cylindrical frame 51 is hit with a hammer or the like from the fastening members 56 and 57. Then, these fastening members were removed from the deformed muscle 30, but there was a problem that the cylindrical frame 51 was not easily detached from the fastening members 56 and 57.
[0007]
If the fixture 44 cannot be removed from the deformed muscle 30, the testing machine 31 cannot be removed from the deformed muscle 30, so the upper surface of the cylindrical frame 51 is smashed. The testing machine 31 may be removed. By the way, when a tensile strength test of 20 to 25 t is performed, there is an example in which the fixture does not come off from the deformed muscle unless a load of 6 t is applied.
Furthermore, since the fixing tool 44 is removed from the deformed muscle 30 by hitting the upper surface of the cylindrical frame 51, there is a problem that the testing machine 31 is shocked and damaged at the moment when the fixing tool is knocked down.
[0008]
As a result of repeated researches in view of such points, the present inventors have found that the inner peripheral surface of the through hole of the cylindrical frame body and the outer peripheral surfaces of the pair of fastening members that slide on the conical surface are partially protruding. Focusing on the fact that deformation easily occurs and the inner peripheral surface of the through hole and the outer peripheral surface of the fastening member are less likely to adhere to the entire surface, and the inner peripheral surface of the through hole and the outer peripheral surface of the fastening member can slide in close contact over the entire surface And found that the above problem can be solved.
Therefore, an object of the present invention is to provide a deformed muscle tensile test fixture that has a fixing function equivalent to that of a conventional fixture and can be easily removed after the test.
[0009]
[Means for Solving the Problems]
The fixture for a deformed muscle tensile tester of the present invention (hereinafter, referred to as a fixture) includes a bowl-shaped frame having a through hole in which one opposing surface is inclined in a planar shape toward the lower center at the center portion. are fastened member Toka et configuration of the pair of wedge-shaped to be inserted into the through hole by sandwiching a different shape reinforcing bars from the left and right sides.
In the saddle-shaped frame, one opposing surface of the through hole is inclined in a planar shape toward the lower center. This inclination angle is usually 5 to 30 degrees, preferably 8 to 12 degrees, and is formed substantially the same as the inclination angle of the outer tapered surfaces of the pair of fastening members.
Note that the outer shape of the bowl-shaped frame is usually formed in a rectangular parallelepiped shape, but is not limited to this, and may have various shapes such as a circle and an ellipse if a square through hole is provided in the center. May be.
[0010]
A pair of fastening members, so the outer tapered surface may slide over the entire surface of the inclined surface of the through hole, the same as the pair of opposing surfaces of the through hole, is formed in a planar shape, the outer tapered surface of the fastening member Has substantially the same angle as the inclined surface of the opposing surface of the through hole.
In the pair of fastening members, it is preferable to form a groove or an anti-slip on the clamping surface of the deformed muscle, respectively, so as to enhance the clamping property to the deformed muscle. The groove is preferably formed in a semi-cylindrical concave groove or a concave groove having a V-shaped cross section, and a non-slip protrusion may be provided on a flat sandwiching surface of deformed streaks.
[0011]
Above the fastening member, may the flange you face the upper surface of the frame in its upper peripheral surface disposed integrally form. By providing the flange, the frame can be easily removed from the fastening member. That is, the frame can be easily removed from the fastening member by inserting a driver-like insertion member between the flange and the upper surface of the frame.
Therefore, it is preferable to form the insertion port for the insertion member between the flange and the upper surface of the frame.
[0012]
Moreover, it is good to form the screw hole which penetrates in this flange. By adopting such a configuration, when the bolt is screwed into the screw hole and fastened for removal from the deformed muscle, the front end of the bolt hits the upper surface of the frame and the fastening member is separated from the frame. The frame can be removed.
[0013]
When a concave groove is formed on the sandwiching surface of the deformed streaks, a plurality of protrusions may be formed on the inner surface of the concave groove at intervals in the lateral direction. This fistula effectively tightens the deformed muscle, and is usually preferably formed with ridges having a height of 0.5 to 3 mm and at equal intervals of 0.5 to 6 mm.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the fixture of the present invention will be described with reference to the accompanying drawings.
FIG. 1 is a perspective view showing an example of a bowl-shaped frame body of the fixture of the present invention. FIG. 2 shows an example of the fixture of the present invention. (A) is a perspective view of the fastening member, (b) is a schematic cross-sectional view showing the usage state of the fastening member, and (c) is further shown. It is typical sectional drawing of the fixing tool of this invention using the fastening member of another example.
[0015]
As shown in FIG. 2 , the fixture of the present invention includes a bowl-shaped frame 1 and a pair of wedge-shaped fastening members 2 and 2 ′.
As shown in FIG. 2, the frame body 1 is formed with a rectangular through-hole 3, and one opposing surface 4, 5 of the through-hole 3 is formed in a planar shape inclined toward the lower center. The pair of fastening members 2 and 2 ′ are wedge-shaped whose outer surfaces 6 and 7 are flat and tapered, and on the inner surface thereof are semi-cylindrical grooves 8 that can sandwich deformed muscles from both the left and right sides, 9 are formed, and protrusions 10 of ridges are formed at equal intervals along the inner peripheral surface of the concave grooves.
[0016]
The fastening member shown in FIG. 2 (a), the flanges 18, 18 in the upper circumferential side you face the upper surface C of the frame 1 'is formed integrally, this flange, screw holes 19, 19 penetrating' As shown in FIG. 2 (b), bolts 20 and 20 'are attached to these screw holes.
Further, on the lower surface of the flange 28, 28 'of the fastening member shown in FIG. 2 (c), the outlet 29 is provided.
[0017]
In order to attach the fixture of the present invention to the deformed muscle, as shown in FIG. 3 , the frame 1 is inserted into the deformed muscle 30 and placed on the upper surface of the testing machine 31 already attached to the deformed muscle 30.
Next, after clamping the semi-cylindrical concave grooves 8 and 9 of the fastening members 2 and 2 ′ from the left and right sides at the desired location of the deformed muscle 30 on the upper portion of the frame body 1 with the taper tip facing downward, The fixture is attached to the deformed muscle 30 by inserting the frame body 1 from the tapered tip portions of the fastening members 2, 2 ′.
[0018]
As described in detail in [0005], the tensile strength of the deformed muscle by the test machine is measured by raising the push-up member 32 of the test machine 31 with hydraulic pressure and pressing the lower surface of the frame 1 of the fixture. Is firmly fixed to the deformed muscle 30 and the tensile strength of the deformed muscle is measured by applying a compressive force between the fixture and the embedded surface of the deformed muscle.
[0019]
To remove the fixture after measurement, the frame 1 can be easily detached from the fastening members 2 and 2 'by lowering the push-up member 32 of the testing machine 31 and tapping the side surfaces 33 and 33' of the frame lightly with a hammer or the like. It is not necessary to hit the upper surface of the frame body 1 with a hammer or the like unlike a conventional fixture.
[0020]
Alternatively, the upper surface in FIG. 2 (a), by fastening the bolts 20, 20 'which is attached to' screw holes 19, 19 'flanges 18, 18 shown (b), the tip of the bolt frame 1 Since C is pressed, the frame 1 can be easily removed. Further, in the fastening member formed with the flanges 28 and 28 'shown in FIG. 2 (c), the frame body can be easily removed from the fastening member by inserting the insertion member into the insertion port 29 provided on the lower surface of the flange. Can be removed.
[0021]
【The invention's effect】
According to the fixture of the present invention, since the frame body can be easily detached from the fastening member after measuring the tensile strength of the deformed bar with the deformed bar tensile testing machine, the working efficiency is increased. In addition, unlike the conventional fixture, the frame body is not struck and deformed, so that the lifetime of the fixture can be greatly extended. Furthermore, when removing the fixture from the deformed muscle, the frame body does not fall and impact the testing machine and damage it.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an example of a frame body according to a fixture of the present invention.
FIGS. 2A and 2B show an example of a fixture according to the present invention, in which FIG. 2A is a perspective view of a fastening member, FIG. 2B is a schematic cross-sectional view showing a usage state of the fixture, and FIG. It is typical sectional drawing of the fixing tool of this invention using the fastening member of the example of.
FIG. 3 is a schematic side view showing a usage state of a conventional fixture .
FIGS. 4A and 4B show a usage state of a conventional fixing device, in which FIG. 4A is a schematic cross-sectional view of a state where the fixture is attached to a deformed muscle, and FIG. 4B is a perspective view of a testing machine attached to the deformed muscle.
5A and 5B show a conventional fixing device, wherein FIG. 5A is a perspective view of a fastening member, and FIG. 5B is a perspective view of a frame body.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Frame body 2,2 'Fastening member 3 Through-hole 4,4 of one opposing surface of a through-hole 6,7 Outer taper surface of a fastening member 8,9, Semi-cylindrical concave groove 10 of a fastening member 10 Fushi 18 , 18 ′; 28, 28 ′ flange 19, 19 ′ screw hole 20, 20 ′ bolt 29 insertion port 30 deformed muscle 31 testing machine 32 push-up member 33, 33 ′ side face of frame 43 central through hole 44 of testing machine fixed Tool 51 Cylindrical frame 56, 57 Fastening member 58, 59 Semi-cylindrical concave groove

Claims (1)

異形鉄筋とその埋設面間に圧力をかけて、引張耐力を測定する異形鉄筋引張試験機に使用される固定具であって、中央部に一方の対向面が下方中心に向けて平面状に傾斜している貫通孔を有する升形の枠体と、異形鉄筋を左右両側から挟持して上記貫通孔に挿入される一対の楔形の締結部材とからなり、この締結部材は、その外側テーパー面が上記貫通孔の対向面に接して摺動するように形成され、前記一対の楔形の締結部材は、異形鉄筋の挟持面に、溝又は滑り止めを有するとともに、前記締結部材の上部に枠体の上面に対面するフランジが形成され、さらにこのフランジにネジ孔が形成されてなる異形鉄筋引張試験機用固定具。Applying pressure between deformed bar and its embedded surface, tensile strength a fixture for use in deformed bar tensile tester to measure, tilting one of facing surfaces to the central portion in a plane downward around a frame body of Masugata having a through-hole that is oblique, a pair of wedge-shaped fastening member Toka Rannahli which sandwich the deformed bar from the left and right sides are inserted into the through hole, the fastening member, the outer tapered surface And the pair of wedge-shaped fastening members have grooves or anti-slips on the sandwiching surfaces of the deformed reinforcing bars, and a frame on the upper part of the fastening member. is flange formed facing to the upper surface of the body, further different shape rebar tensile testing machine fixture screw holes are formed in this flange.
JP04957998A 1998-03-02 1998-03-02 Fixture for deformed bar tensile testing machine Expired - Fee Related JP3913886B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP04957998A JP3913886B2 (en) 1998-03-02 1998-03-02 Fixture for deformed bar tensile testing machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP04957998A JP3913886B2 (en) 1998-03-02 1998-03-02 Fixture for deformed bar tensile testing machine

Publications (2)

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JPH11248611A JPH11248611A (en) 1999-09-17
JP3913886B2 true JP3913886B2 (en) 2007-05-09

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