JP2019190944A - Compression test device - Google Patents

Abstract

To obtain a compression test device capable of performing a compression test on a specimen while the pressurized portion is tilted.SOLUTION: At one end 14A of the arm 14, a support portion 35 is provided, and the arm 14 is rotatable around the support unit 35. Further, at the other end 14B of the arm 14, a pressure member 42 is provided, and in the pressure member 42, a load surface 44A is provided along the horizontal plane in the reference state of the arm 14. On the other hand, on the upper surface of the base 46, a load surface 54A is formed along the horizontal plane, and the load by the hydraulic jack 12 is transmitted to the load surface 54A through the load surface 44A of the pressurized member 42. As a result, when the arm 14 is tilted, the load surface 44A of the pressurized member 42 becomes in a state tilted to the horizontal plane, and the load is applied along the vertical direction through the load surface 44A in this state. That is, it is possible to perform a compression test on the base 46 while the pressurized member 42 is tilted.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a compression test apparatus.

  For example, in Patent Document 1, a load is applied to a structure supported by a support frame (hereinafter referred to as “sample”) via a load jig (hereinafter referred to as “pressurizing unit”) with a jack. And the technique regarding the strength test apparatus which performs the strength test of a specimen is disclosed. This prior art has a simple and compact structure with a small number of jacks, is low in cost, and can be used to conduct strength tests at various locations, including axial loads, shear loads, and bending loads. It is possible.

JP 2006-242587 A

  However, in the above prior art, in any test mode, the load surface of the pressurization part and the load surface of the specimen are parallel, so the test is performed with the pressurization part inclined with respect to the specimen. Can't do it.

  An object of the present invention is to obtain a compression test apparatus that allows a test specimen to be subjected to a compression test in a state where the pressurizing portion is inclined in consideration of the above facts.

  In order to achieve the above object, the compression test apparatus according to the first aspect is disposed along the vertical direction, and is disposed along the horizontal direction, a load loading apparatus that loads the load along the vertical direction, An arm supported on one side in the longitudinal direction so as to be rotatable along the vertical direction, and provided on the other side in the longitudinal direction of the arm, and the arm is disposed along the horizontal direction along the horizontal plane A load surface is provided, and a load that is transmitted by the load load device to the load surface formed along the horizontal plane in the specimen loaded by the load load device is transmitted through the load surface. And a pressure part.

  In the compression test apparatus according to the first aspect, a load loading device is disposed along the vertical direction, and a load is loaded along the vertical direction by the load loading device. On the other hand, the arm is disposed along the horizontal direction, and one side in the longitudinal direction is supported so as to be rotatable along the vertical direction. Further, a pressurizing part is provided on the other side in the longitudinal direction of the arm, and a load surface along a horizontal plane is provided on the pressurizing part in a reference state in which the arm is arranged along the horizontal direction. . In addition, a load surface is formed along a horizontal plane on the specimen loaded by the load load device, and the load by the load load device is applied to the load surface via the load surface of the pressurizing unit. Is transmitted.

  Here, one side of the longitudinal direction of the arm is supported so as to be rotatable along the vertical direction, but when the height of the supporting portion supporting the arm and the height of the loaded surface of the specimen are substantially the same. The arm is in a state (reference state) arranged along the horizontal direction. That is, the arm is not rotated with respect to the horizontal plane. In this state, the load surface of the pressurizing unit is arranged along the horizontal plane. For this reason, the said load surface becomes substantially surface contactable with respect to the to-be-loaded surface of a specimen.

  On the other hand, when the height of the support portion of the arm is higher than the height of the loaded surface of the specimen, the arm is centered on one side in the longitudinal direction of the arm and the other side in the longitudinal direction of the arm is on the lower side. It will turn to. As described above, when the arm rotates (tilts) with respect to the horizontal plane, the load surface of the pressurizing unit is tilted with respect to the horizontal plane. That is, the load surface of the pressurizing unit is inclined with respect to the surface to be loaded of the specimen, and the surface to be loaded of the specimen is pressed in this state. That is, a load is applied along the vertical direction through the load surface in a state where the load surface of the pressurizing unit is inclined with respect to the load surface of the specimen.

  Here, “vertical” is not limited to perfect vertical, but means so-called “substantially vertical”, and includes a range allowed in advance as a manufacturing error or the like. The same applies to “horizontal”, which means “substantially horizontal”. Further, here, “one side in the longitudinal direction of the arm” and “the other side in the longitudinal direction of the arm” indicate two different points along the longitudinal direction of the arm, and one end portion in the longitudinal direction of the arm. It does not mean the other end in the longitudinal direction of the arm.

  A compression test apparatus according to a second aspect is the compression test apparatus according to the first aspect, wherein the arm is rotatable between a support body supporting the arm and one side in the longitudinal direction of the arm. A first rotation support portion for supporting is provided.

  In the compression test apparatus according to the second aspect, the first rotation support portion is provided between the support body supporting the arm and one side in the longitudinal direction of the arm, and the first rotation support portion The arm is supported so as to be rotatable along the vertical direction. Thereby, the arm can be rotated along the vertical direction on the other side in the longitudinal direction of the arm around the first rotation support portion.

  A compression test apparatus according to a third aspect is the compression test apparatus according to the second aspect, provided between the load device and the other side in the longitudinal direction of the arm, It further has the 2nd rotation support part which absorbs the rotation angle difference which arises when the said arm rotates.

  In the compression test apparatus according to the third aspect, the second rotation support portion is provided between the load application device and the other side in the longitudinal direction of the arm. The second rotation support portion absorbs the rotation angle difference generated when the arm rotates with respect to the reference state of the arm.

  In the first place, the load application device is arranged along the vertical direction, and the arm is arranged along the horizontal direction (reference state). That is, the angle formed by the load application device and the arm is about 90 degrees. On the other hand, when the other side in the longitudinal direction of the arm is rotated downward, the angle formed by the load device and the arm is smaller than 90 degrees.

  For this reason, if the load device and the arm are fixed, the arm cannot be rotated. Therefore, in this aspect, the 2nd rotation support part is provided between the load application apparatus and the other side of the longitudinal direction of an arm. The arm rotates relative to the reference state by absorbing the rotation angle difference (rotation amount) generated when the arm rotates relative to the reference state of the arm by the second rotation support part. It becomes possible to do.

  A compression test apparatus according to a fourth aspect is the compression test apparatus according to the second aspect or the third aspect, wherein a gap is provided between the load surface and the load surface in the reference state of the arm. The vertical position of the first rotation support portion is set.

  In the compression test apparatus according to the fourth aspect, the vertical position of the first rotation support portion is set such that a gap is provided between the load surface and the load surface in the reference state of the arm. As a result, the arm is rotated downward with respect to the reference state of the arm in a state where the load surface of the pressurizing unit is in contact with the load surface of the specimen. That is, the pressure part provided on the other side in the longitudinal direction of the arm is placed on the specimen in a state inclined with respect to the specimen, and in this state, via the pressure part. A load is applied to the specimen by a load device.

  A compression test apparatus according to a fifth aspect is the compression test apparatus according to any one of the first to fourth aspects, wherein one side of the arm in the longitudinal direction is one end in the longitudinal direction of the arm. The other side in the longitudinal direction of the arm is the other end in the longitudinal direction of the arm.

  In the compression test apparatus according to the fifth aspect, one end of the arm in the longitudinal direction is rotatably supported, and the arm is disposed along the horizontal direction at the other end of the arm in the longitudinal direction. A load surface is provided along the horizontal plane in the reference state.

  As described above, the compression test apparatus according to this aspect has an excellent effect that the compression test can be performed on the specimen while the pressurizing unit is inclined.

It is a side view which shows the reference | standard state of the arm which comprises a part of compression test apparatus which concerns on this Embodiment. It is a side view which shows the state which the arm which comprises some compression testing apparatuses concerning this Embodiment rotated. It is a side view which shows the state which performed the compression test with respect to the foundation with the compression test apparatus which concerns on this Embodiment. It is a side view of the compression test apparatus shown as a comparative example. (A) is a schematic diagram which shows the compression test apparatus which concerns on this Embodiment, (B) is a schematic diagram which shows the modification 1 of the compression test apparatus which concerns on this Embodiment. (A) is a schematic diagram which shows the modification 2 of the compression test apparatus which concerns on this Embodiment, (B) is a schematic diagram which shows the modification 3 of the compression test apparatus which concerns on this Embodiment. (A) is a schematic diagram which shows the compression test apparatus which concerns on this Embodiment, (B) is a schematic diagram which shows the modification 4 of the compression test apparatus which concerns on this Embodiment, (C) is this It is a schematic diagram which shows the modification 5 of the compression test apparatus which concerns on embodiment. (A) is a schematic diagram which shows the modification 6 of the compression test apparatus which concerns on this Embodiment, (B) is a schematic diagram which shows the modification 7 of the compression test apparatus which concerns on this Embodiment. (A) is a schematic diagram showing a modification 8 of the compression test apparatus according to the present embodiment, (B) is a schematic diagram showing a modification 9 of the compression test apparatus according to the present embodiment, and (C ) Is a schematic diagram showing Modification 10 of the compression test apparatus according to the present embodiment.

(Configuration of compression test equipment)
First, the configuration of a compression test apparatus according to an embodiment of the present invention will be described.

  FIG. 1 shows a compression test apparatus 10 according to an embodiment of the present invention. The compression test apparatus 10 includes a hydraulic jack (load loading apparatus) 12 and an H-shaped steel arm 14.

  The hydraulic jack 12 is fixed to a lower surface 16A of the mounting member 16 disposed on the upper side of the compression test apparatus 10 by a bolt or the like (not shown) and is suspended from the lower surface 16A of the mounting member 16. . Thereby, the said hydraulic jack 12 is arrange | positioned along the substantially vertical direction.

  In addition, a pump (not shown) is connected to the hydraulic jack 12, and when the pump is operated, the pressure in the cylinder 12 </ b> A increases, and pressurization by the hydraulic jack 12 is possible. That is, a load is applied along the vertical direction by the hydraulic jack 12. A load cell 18 is attached to the tip of the rod 12B that goes in and out of the cylinder 12A. The load cell 18 detects a load (axial force) applied by the hydraulic jack 12.

  On the other hand, the arm 14 is arranged along the horizontal direction (reference state), and one end portion (one side in the longitudinal direction) 14A of the arm 14 is erected along the substantially vertical direction. The support 20 is supported so as to be rotatable. The support 20 is provided integrally with the mounting member 16. In addition, the “one end portion 14A in the longitudinal direction of the arm 14” is simply referred to as one end portion 14A of the arm 14 in the present embodiment.

  The support 20 will be specifically described. A pair of bearing portions 22 is fixed to the side surface 20A of the support 20 along the depth direction of FIG. The shaft portion 24 is rotatably supported with respect to the pair of bearing portions 22. In a state where the shaft portion 24 is supported by the bearing portion 22, the shaft portion 24 is disposed along the horizontal direction so as to face the side surface 20 </ b> A of the support 20.

  Here, the arm 14 includes an upper wall part 26 and a lower wall part 28 that face each other in the vertical direction, and a side wall part 30 that connects the upper wall part 26 and the lower wall part 28. A hole portion 32 is formed in the side wall portion 30 at one end portion 14 </ b> A of the arm 14, and the shaft portion 24 is fitted (fixed) to the hole portion 32. That is, the arm 14 and the shaft portion 24 are integrated.

  As described above, since the shaft portion 24 is rotatably supported with respect to the pair of bearing portions 22, the arm 14 can be rotated around the one end portion 14A via the shaft portion 24. (Support portion (first rotation support portion) 35). The shaft portion 24 may be fixed to the pair of bearing portions 22. In this case, the arm 14 rotates around the shaft portion 24 through the hole portion 32.

  A pair of bearing portions 34 are fixed to the other end portion 14B in the longitudinal direction of the arm 14 (the other side in the longitudinal direction) on the upper surface 26A side of the upper wall portion 26 along the depth direction of FIG. Yes. A shaft portion 36 to be described later is disposed to face the upper wall portion 26 of the arm 14 with respect to the pair of bearing portions 34. Note that “the other end portion 14B in the longitudinal direction of the arm 14” is simply referred to as the other end portion 14B of the arm 14 in the present embodiment.

  A connecting portion 38 is provided below the load cell 18 described above. The connecting portion 38 is formed with a hole 40, and the shaft portion 36 is fitted (fixed) into the hole 40. And a pair of bearing part 34 is supported with respect to the said shaft part 36 so that rotation is possible (support part (2nd rotation support part) 45).

  As a result, when the arm 14 tries to rotate around the support portion 35 (shaft portion 24), the pair of bearing portions 34 rotate with respect to the connecting portion 38 via the shaft portion 36. That is, the arm 14 is rotatable about the one end portion 14A via the shaft portion 24 (support portion 35) and the shaft portion 36 (support portion 45).

  Further, a pressure member (pressure member) 42 is provided separately from the arm 14 at the other end 14 </ b> B of the arm 14. The pressure member 42 is made of steel and has a rectangular tube shape, and is connected to the other end portion 14B of the arm 14 by welding or the like. Further, the pressure member 42 is closed at the upper end and the lower end so that the deformation of the pressure member 42 itself is suppressed.

  The lower surface side of the plate 44 that closes the lower end of the pressure member 42 is a load surface 44A described later, and the load surface 44A is provided along the horizontal plane in the reference state of the arm 14. The pressure member 42 transmits the load applied by the hydraulic jack 12 to the lower side.

  On the other hand, the upper wall portion 26 of the arm 14 is provided with a pair of displacement gauges 48 and a level 50 along the longitudinal direction of the arm 14. 14 grades can be measured. The pressure member 42 is provided with a pair of displacement gauges 52, and the strain of the foundation (sample) 46 is measured by the amount of displacement by the displacement gauges 52. The displacement meter 48, the level 50, etc. are not shown in the drawings other than FIG.

  The foundation 46 is, for example, a cloth foundation made of concrete, and includes a rising portion 54 that stands up in a substantially vertical direction. The rising portion 54 has a rectangular parallelepiped cross-sectional shape, and a loaded surface 54A to which a load is applied is provided on the upper surface of the rising portion 54. The loaded surface 54A is formed along a substantially horizontal plane, and the loaded surface 44A of the pressurizing member 42 can be brought into contact with the loaded surface 54A.

(Operation and effect of compression test equipment)
Next, the operation and effect of the compression test apparatus according to the embodiment of the present invention will be described.

  As shown in FIG. 1, in the compression test apparatus 10 according to the present embodiment, a load is applied along the vertical direction by a hydraulic jack 12. On the other hand, as described above, the support portion 35 is provided at the one end portion 14 </ b> A of the arm 14, and the arm 14 is rotatable via the support portion 35.

  In the present embodiment, the other end portion 14B of the arm 14 is provided with a pressurizing member 42, and the pressurizing member is in a state (reference state) in which the arm 14 is disposed along the horizontal direction. 42 is provided with a load surface 44A along a horizontal plane. Furthermore, in the present embodiment, a loaded surface 54A is formed along the horizontal plane on the rising portion 54 of the foundation 46 to which a load is applied by the hydraulic jack 12, and a pressure member is provided on the loaded surface 54A. The load by the hydraulic jack 12 is transmitted through the load surface 44A of 42.

  Here, as a comparative example, as shown in FIG. 4, when the height of the support surface 35 that supports the arm 14 and the loaded surface 54 </ b> A of the foundation 46 is substantially the same, the arm 14 is disposed along a substantially horizontal direction. (The reference state). In this case, the load surface 44A of the pressure member 42 provided on the other end portion 14B of the arm 14 is disposed along a substantially horizontal plane, and the load surface 44A is substantially surface with respect to the loaded surface 54A of the foundation 46. It will come into contact. A plane substantially parallel to the horizontal plane is indicated by P.

  On the other hand, as shown in FIG. 2, when the support portion 35 of the arm 14 is located at a position higher than the height of the loaded surface 54 </ b> A of the foundation 46, the arm 14 has the other end portion 14 </ b> B side around the support portion 35. It will rotate downward. As described above, when the arm 14 rotates (tilts) with respect to the horizontal plane, the load surface 44A of the pressure member 42 is tilted with respect to the horizontal plane. A plane substantially parallel to the horizontal plane is indicated by P.

  For this reason, the load surface 44 </ b> A of the pressurizing member 42 is in substantially line contact (including point contact) with the loaded surface 54 </ b> A of the foundation 46. That is, a load is applied along the vertical direction by the hydraulic jack 12 through the load surface 44A in a state where the load surface 44A of the pressure member 42 is inclined with respect to the load surface 54A of the foundation 46. Become. Therefore, in the compression test apparatus 10 in this aspect, a compression test can be performed on the foundation 46 with the pressure member 42 tilted.

  Generally, when the compressive strength (proof strength) of the foundation 46 is measured, as shown in FIG. 4, in the reference state of the arm 14, a load is applied to the foundation 46 side by the hydraulic jack 12 via the pressurizing member 42. . That is, a load is applied in a state in which the load surface 44A of the pressing member 42 is substantially in surface contact with the loaded surface 54A of the foundation 46, the strain of the foundation 46 is detected, and the compressive strength of the foundation 46 is obtained.

  However, although not shown in the building due to an earthquake, strong wind, or the like, when the column is inclined with respect to the foundation 46, load stress is concentrated on the upper surface of the foundation 46 via the inclined column. Thus, if load stress concentrates on the upper surface of the foundation 46, the compressive strength of the foundation 46 will become low correspondingly. In other words, the foundation 46 does not satisfy the set compression strength.

  For this reason, in this embodiment, as shown in FIG. 2 and FIG. 3, by performing a compression test on the foundation 46 in a state where the pressure member 42 is inclined, a load is applied via a column on the foundation 46 side. It is possible to measure the compressive strength of the foundation 46 in a state where stress is concentrated. Thereby, it is possible to set a material having a compressive strength required for the foundation 46. In FIG. 3, the load F transmitted from the hydraulic jack 12 to the foundation 46 side via the pressure member 42 is indicated by an arrow.

  Further, in the present embodiment, as shown in FIG. 1, a support portion 45 is provided between the hydraulic jack 12 and the pressurizing member 42, and as shown in FIG. 2, the arm 14 is in the reference state. The rotation angle difference generated when the rotation is performed with respect to is absorbed by the support portion 45.

  As shown in FIG. 1, in the present embodiment, as described above, the hydraulic jack 12 is disposed along the vertical direction, and the arm 14 is disposed (reference state) along the horizontal direction. That is, the angle formed by the hydraulic jack 12 and the arm 14 is about 90 degrees. On the other hand, when the other end 14B of the arm 14 is rotated downward, the angle formed between the hydraulic jack 12 and the arm 14 is smaller than 90 degrees.

  For this reason, although not shown, if the hydraulic jack 12 and the arm 14 are fixed, the arm 14 cannot rotate. Therefore, in the present embodiment, the support portion 45 is provided between the hydraulic jack 12 and the other end portion 14 </ b> B of the arm 14. In other words, the arm 14 is rotated relative to the reference state by absorbing the rotation angle difference (rotation amount) generated when the arm 14 is rotated with respect to the reference state of the arm 14 by the support portion 45. It is possible to move.

  Furthermore, in the present embodiment, the vertical position of the support portion 35 of the arm 14 is provided with a gap between the load surface 44A of the pressure member 42 and the loaded surface 54A of the foundation 46 in the reference state of the arm 14. Is set to As a result, the arm 14 is rotated downward with respect to the reference state of the arm 14 with the load surface 44A of the pressure member 42 in contact with the loaded surface 54A of the foundation 46. That is, the pressure member 42 is placed on the foundation 46 in a state inclined with respect to the foundation 46.

  As described above, when the pressure member 42 is inclined with respect to the base 46, a load is applied to the base 46 by the hydraulic jack 12 via the pressure member 42. As shown, it is possible to measure the compressive strength of the foundation 46 on the side of the foundation 46 in a state where load stress is concentrated through the column. Note that the vertical position of the support portion 35 of the arm 14 is set so that the load surface 44A of the pressure member 42 contacts the loaded surface 54A of the foundation 46 in the reference state of the arm 14. The compressive strength of the basic foundation 46 can also be measured.

(Modification of this embodiment)
Next, a modification of this embodiment will be described.

  FIG. 5A shows the compression test apparatus 10 according to this embodiment shown in FIG. 1 in a schematic state. In addition, in FIG. 5B to FIG. 9A to FIG. 5C described below, the compression test apparatus 10 is schematically illustrated in the same manner as FIG. 5A.

  As shown in FIG. 5A, in this embodiment, a pressure member 42 is provided on the other end 14B side of the arm 14 and a load is applied from the pressure jack 42 directly above the pressure member 42. However, the position of the pressure member 42 is not particularly limited.

  As a first modification, as illustrated in FIG. 5B, the pressing member 42 may be provided on the central portion 14 </ b> C side with respect to the other end portion 14 </ b> B of the arm 14. The hydraulic jack 12 is adapted to be loaded on the other end 14B side of the arm 14. In this case, using the lever principle, the load applied to the pressure member 42 is increased when the load applied by the hydraulic jack 12 is the same as that in the embodiment shown in FIG. Can do.

  Further, the position of the hydraulic jack 12 is not limited to the other end portion 14B side of the arm 14 as shown in FIGS. 5 (A) and 5 (B). For example, as a second modification, as shown in FIG. 6A, a pressing member 42 is provided on the center portion 14 </ b> C side of the other end portion 14 </ b> B of the arm 14, and from the upper side of the pressing member 42. It may be set so that a load is applied by the hydraulic jack 12.

  Here, as shown in FIG. 1, the hydraulic jack 12 is fixed to the mounting member 16, and the arm 14 is supported by the support body 20 via the support portion 35. For this reason, as shown in FIG. 6A, the compression test apparatus 10 including the mounting member 16 and the support 20 shown in FIG. It becomes.

  Furthermore, in the third modification, as shown in FIG. 6B, the position of the hydraulic jack 12 may be arranged closer to the support portion 35 of the arm 14 than the pressurizing member 42. Thereby, it becomes possible to make the compression test apparatus 10 more compact.

  In the present embodiment, as shown in FIG. 7A, the pressure member 42 provided on the other end 14B side of the arm 14 has a rectangular tube shape, and the upper end and the lower end are closed. However, the shape of the pressurizing member is not limited to this as long as the load by the hydraulic jack 12 can be transmitted to the base 46 side.

  For example, as a fourth modification, as shown in FIG. 7B, a pressure member 56 having a rectangular parallelepiped shape may be used at the other end portion 14 </ b> B of the arm 14. Further, as a fifth modified example, as shown in FIG. 7C, a pressure member 58 having a plate shape may be used for the other end portion 14B of the arm 14. In this case, the pressure member 58 is coupled to the lower surface side of the lower wall portion 28 of the arm 14. Note that the coupling method is not limited to welding, and may be coupling using an adhesive.

  In these embodiments, pressure members 42 (see FIG. 7A), 56 (see FIG. 7B), and 58 are provided separately from the arm 14, respectively. Is not limited to this. For example, when the arm rigidity is obtained to the extent that it does not deform with respect to the reaction force from the foundation 46 side when a load is applied, as a sixth modification, as shown in FIG. The predetermined portion may be the pressurizing unit 60A, and the load may be transmitted to the base 46 side by the pressurizing unit 60A. In this case, the arm 60 itself is also used as the pressure unit.

  Further, in the present embodiment, as shown in FIG. 7A, a rectangular tube-shaped pressurizing member 42 is provided on the other end portion 14B side of the arm 14, and the one end portion 14A of the arm 14 supports the support portion 35. However, the embodiment of the present invention is not limited to this.

  For example, as a seventh modification, as shown in FIG. 8B, for example, a pressure member 42 is provided at the other end portion 14 </ b> B of the arm 14, and the support portion 35 is located at the center portion rather than the one end portion 14 </ b> A of the arm 14. It may be provided on the 14C side. In this case, as described above, the hydraulic jack 12 and the support portion 35 come close to each other, so that the compression test apparatus 10 can be made compact. The pressure member here is plate-shaped, but the shape is not particularly limited, and will be described below as the pressure member 42.

  In the present embodiment, as shown in FIG. 5A, a support portion 45 is provided between the hydraulic jack 12 and the other end portion 14B of the arm 14, and the other end portion 14B side of the arm 14 is directed downward. When it rotates, it absorbs the rotation angle difference generated between the hydraulic jack 12 and the pressure member 42. However, this is because when the inclination of the arm 14 is large, the contact between the hydraulic jack 12 and the arm 14 may be shifted and affect the load. In other words, when the inclination of the arm 14 is small, as shown in FIG. 9A, as a modification 8, the support portion 45 (see FIG. 9) is interposed between the hydraulic jack 12 and the other end portion 14B of the arm 14. 5 (A)) is not necessarily required.

  On the other hand, as shown in FIG. 9, instead of the support portion 45 including the bearing portion 34 and the shaft portion 36, as a modified example 9, as shown in FIG. The support part 62 may be provided. In the support portion 62, when the other end portion 14 </ b> B side of the arm 14 is rotated downward, the tip of the hydraulic jack 12 is moved relative to the support portion 62 in accordance with the displacement of the contact between the hydraulic jack 12 and the arm 14. By changing the contact position, the rotational angle difference generated between the hydraulic jack 12 and the pressure member 42 is absorbed.

  Further, as a tenth modification, as shown in FIG. 9C, a support portion 66 composed of a plurality of rollers 64 is provided, and the rollers 64 roll according to the displacement of the contact between the hydraulic jack 12 and the arm 14. The rotation angle difference generated between the hydraulic jack 12 and the pressure member 42 may be absorbed.

  As mentioned above, although one embodiment of the present invention was described, the present invention is not limited to such an embodiment, and one embodiment and various modifications may be used in combination as appropriate, and the gist of the present invention will be described. Of course, various embodiments can be implemented without departing from the scope.

10 Compression test equipment 12 Hydraulic jack (loading equipment)
14 Arm 14A One end (one side in the longitudinal direction of the arm)
14B The other end (the other side in the longitudinal direction of the arm)
20 support body 22 bearing part (1st rotation support part)
24 Shaft (first rotation support)
34 Bearing part (second rotation support part)
35 Support part (first rotation support part)
36 Shaft part (second rotation support part)
42 Pressure member (Pressure part)
44A Load surface 45 Support portion (second rotation support portion)
46 Foundation (Specimen)
54 Rise (Specimen)
54A Loaded surface 56 Pressurizing member (pressurizing part)
58 Pressure member (Pressure part)
60 arm 60A pressure unit 62 support unit (second rotation support unit)
64 rollers (second rotation support part)
66 Support part (second rotation support part)

Claims (5)

A load-loading device disposed along the vertical direction and loading a load along the vertical direction;
An arm arranged along the horizontal direction and supported on one side of the longitudinal direction so as to be rotatable along the vertical direction;
A load surface that is provided on the other side in the longitudinal direction of the arm and that is provided with a load surface along the horizontal plane in a reference state in which the arm is disposed along the horizontal direction, A pressurizing unit that transmits a load by the load load device through the load surface to the load surface formed along
A compression test apparatus.   The compression test apparatus according to claim 1, wherein a first rotation support portion that rotatably supports the arm is provided between a support body that supports the arm and one side in a longitudinal direction of the arm. .   A second rotation support portion that is provided between the load load device and the other side in the longitudinal direction of the arm and absorbs a rotation angle difference generated when the arm rotates with respect to a reference state of the arm. The compression test apparatus according to claim 2, further comprising:   The vertical position in the first rotation support portion is set so that a gap is provided between the load surface and the load surface in the reference state of the arm. Compression test equipment.   The one side in the longitudinal direction of the arm is one end portion in the longitudinal direction of the arm, and the other side in the longitudinal direction of the arm is the other end portion in the longitudinal direction of the arm. The compression test apparatus according to any one of the above.