Holding structure of long test specimen

Abstract

To reliably prevent the falling of a long test specimen in a test specimen fabrication space within a building.SOLUTION: A holding structure for a long test specimen comprises a protruding member (3), a receiving member (4), and a connector (5). The protruding member (3) is fixed to a structural frame (9) of a building and extends in the x direction from the structural frame toward a test specimen fabrication space at approximately the same height as an upper member (10b) of the long test specimen. The receiving member (4) is installed to intersect with the tip of the protruding member and extends along the y direction perpendicular to the x direction. The connector (5) is fixed to the receiving member with a first bolt (71) and is detachably fixed to the upper member of the long test specimen with a second bolt (72). The connector includes: a vertical section (51) with a first bolt hole for insertion of the first bolt; and a horizontal section (52) with a second bolt hole for insertion of the second bolt. At least one of the first bolt hole and the second bolt hole is a loose hole that allows adjustment of a bolt fixation position.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a support structure for long test specimens, and more particularly to a support structure for supporting long test specimens that are long in the vertical direction, such as column test specimens, in a test specimen production space within a building. [Background technology]

[0002] When obtaining Ministerial Certification for Fire Prevention and Resistance of steel columns of a building, fire resistance tests must be conducted using test specimens with the same dimensions and specifications as the actual product. Furthermore, test specimens must be manufactured by workers under the same conditions as those used in actual construction. For example, in the case of a column test specimen, a long column body is placed vertically, and additional materials such as fire-resistant coating materials are applied around the column body.

[0003] As a technique related to fire resistance testing, JP 2022-151001 A (Patent Document 1) proposes a technique for conducting a simulated fire resistance test using a column-shaped test specimen smaller than the actual size of the column test specimen in a stage prior to conducting a fire resistance test on an actual steel column using a column furnace. In this technique, the upper and lower ends of the small-sized column-shaped test specimen are attached to the base of the simulation test device via L-angle materials. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent Publication No. 2022-151001 Summary of the Invention [Problem to be solved by the invention]

[0005] When conducting fire resistance tests on steel columns and the like, test specimens are fabricated in a building that has fire resistance testing equipment or a building dedicated to fabrication (hereinafter simply referred to as "building"). The test specimens are transported from other spaces to the test specimen fabrication space by overhead cranes, etc., where work is carried out to attach additional members to the erected test specimen body. The completed test specimens are then transported from the test specimen fabrication space to the testing space.

[0006] In a typical building, the upper part of the test specimen erected in the test specimen production space is temporarily fixed to the structural frame via a simple holding means using a C-clamp (clamping the edge of the upper part with a C-clamp) to prevent it from falling over during work. However, because test specimens such as steel columns are long specimens exceeding 3000 mm, such temporary fixing could cause the test specimen to fall over if the production worker puts his / her weight on the specimen or if an earthquake occurs.

[0007] The present invention has been made to solve the above-mentioned problems, and its object is to provide a holding structure for long-length test specimens that can reliably prevent long-length test specimens from tipping over in a test specimen production space within a building. [Means for solving the problem]

[0008] A holding structure for a long specimen according to an aspect of the present invention is a holding structure for holding a long specimen that is long in the height direction in a specimen fabrication space in a building, and includes a protruding member, a receiving member, and a connector. The protruding member is fixed to a structural body of the building and protrudes in the x direction from the structural body toward the specimen fabrication space at approximately the same height as the upper member of the long specimen. The receiving member is provided so as to intersect with the tip of the protruding member and extends along a y direction perpendicular to the x direction. The connector is fixed to the receiving member by a first bolt and is detachably fixed to the upper member of the long specimen by a second bolt. The connector has a vertical portion provided with a first bolt hole through which the first bolt is inserted and a horizontal portion provided with a second bolt hole through which the second bolt is inserted. At least one of the first bolt hole and the second bolt hole is a loose hole that allows the bolt fixing position to be adjusted.

[0009] Preferably, the receiving member has an engagement portion provided with an insertion hole through which the first bolt is inserted, and the upper member has an edge portion provided with an insertion hole through which the second bolt is inserted. The insertion hole is a normal bolt hole, not a long hole (loose hole), and is typically a round hole.

[0010] In one embodiment, the first bolt hole in the vertical portion is a loose hole that is elongated in the z direction, which is the height direction, and the second bolt hole in the horizontal portion is a loose hole that is elongated in the y direction.

[0011] In this case, it is preferable that the holding structure for the long test specimen further includes a spacer for adjusting the distance in the x direction between the receiving member and the vertical portion.

[0012] In another embodiment, the first bolt hole in the vertical section is a loose hole elongated in the y direction, and the second bolt hole in the horizontal section is a loose hole elongated in the x direction.

[0013] In this case, it is preferable that the holding structure for the long test specimen further includes a spacer for adjusting the distance in the height direction between the upper member and the horizontal portion.

[0014] Preferably, the engaging portion has a plurality of insertion holes at a predetermined pitch along the y direction. This allows the attachment position of the connector to be selected, so that the placement position of the long specimen can be changed according to the work content in the specimen production space. It is also possible to accommodate cases where the position of the round hole on the upper member side differs for each type of specimen.

[0015] It is desirable to place the horizontal part of the connector on the underside of the upper member of the long specimen. This will allow the long specimen to be moved smoothly after the second bolt is removed and the connector will not get in the way when the long specimen is raised by the overhead crane.

[0016] Preferably, the protruding member includes at least one arm member arranged horizontally with its base end fixed to the structural body, and an arm support member with both ends connected and fixed to the structural body and the center or tip end of the arm member. This makes it possible to reinforce the protruding member. In other words, it is possible to improve the strength against stress (tensile force, compressive force, bending moment, etc.) applied to the protruding member. Effect of the Invention

[0017] According to the present invention, the first and second bolts are used to improve the fixing strength of the long specimen to the structural frame. In addition, at least one of the first bolt hole and the second bolt hole of the connector is a loose hole that allows the bolt fixing position to be adjusted, so that the positional deviation of the long specimen installed in the specimen production space can be absorbed. As a result, the long specimen can be reliably prevented from falling over in the specimen production space. [Brief description of the drawings]

[0018] [Figure 1] FIG. 1 is a schematic diagram showing the support structure for the column specimen in the specimen production space inside the building. [Diagram 2] FIG. 2 is a side view of a support structure for a column specimen according to an embodiment of the present invention; [Diagram 3] 1 is a front view of a support structure for a column test specimen according to an embodiment of the present invention. FIG. [Figure 4] FIG. 2 is a top view of a support structure for a column test specimen according to an embodiment of the present invention. [Diagram 5] FIG. 4 is a side view of a protruding member according to the embodiment of the present invention. [Figure 6] FIG. 4 is a top view of a protruding member according to the embodiment of the present invention. [Figure 7] FIG. 7 is an enlarged view of part VII in FIG. 5. [Figure 8] 1(A) to 1(C) are diagrams showing configuration examples of a connector according to an embodiment of the present invention. [Figure 9] FIG. 2 is a vertical cross-sectional view showing a connector mounting structure according to an embodiment of the present invention. [Figure 10] FIG. 2 is a top view showing the mounting structure of the connector according to the embodiment of the present invention. [Figure 11] FIG. 2 is a front view showing a connector mounting structure according to an embodiment of the present invention. [Figure 12] FIG. 11 is a cross-sectional view showing a connector mounting structure in a modified example of an embodiment of the present invention. [Figure 13] FIG. 13 is a front view showing a connector mounting structure in a modified example of an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail with reference to the drawings. In the drawings, the same or corresponding parts are designated by the same reference characters and their description will not be repeated.

[0020] In this embodiment, an example will be described in which the long specimen to be produced in the specimen production space inside the building is a "column specimen" such as a steel column.

[0021] (About the overview) An overview of the retaining structure for the column test specimen 1 in the specimen production space S1 will be described with reference to Figs. 1 to 4. Fig. 1 is a schematic diagram showing the retaining structure for the column test specimen 1 in the specimen production space S1 inside a building. Fig. 2 is a side view of the retaining structure for the column test specimen 1. Fig. 3 is a front view of the retaining structure for the column test specimen 1, which corresponds to the view seen from the III direction in Fig. 2. Fig. 4 is a plan view of the retaining structure for the column test specimen 1, which corresponds to the view seen from the IV direction in Fig. 2.

[0022] First, the specimen fabrication space S1 will be briefly described. The specimen fabrication space S1 is a space near the structural body 9 of the building. The structural body 9 includes a plurality of structural columns 91, structural beams 92, and the like. On a horizontal plane, the direction from the structural body 9 toward the specimen fabrication space S1 (and the opposite direction) is referred to as the "x direction". Also, on the horizontal plane, the direction perpendicular to the x direction is referred to as the "y direction". The plurality of structural columns 91 are arranged at intervals from each other along the y direction. Note that in FIG. 3, the structural columns 91 are omitted from illustration in order to avoid cluttering the drawing. As shown in FIG. 4, the structural columns 91 may be rectangular steel with a closed cross section, or may be made of H-shaped steel.

[0023] In the specimen production space S1, workers produce one or more column specimens 1. As shown in FIG. 1, the column specimen (main body) 1 before production is carried from another space to the specimen production space S1 by an overhead crane (not shown). The production work of the column specimen 1 is carried out in an upright position on the floor of the specimen production space S1. When the production work in the specimen production space S1 is completed and the column specimen 1A is completed, the column specimen 1A is again carried by the overhead crane to the test space S2. The test space S2 is typically a space for conducting a fire resistance test of the column specimen 1A, and a fire resistance test device (not shown) having a furnace is arranged in the test space S2.

[0024] As shown in Fig. 2 and Fig. 3, the column specimen 1 has a vertically extending rectangular column body 10a, an upper base plate 10b horizontally provided at the upper end of the column body 10a, and a lower base plate 10c horizontally provided at the lower end of the column body 10a. The upper base plate 10b and the lower base plate 10c have shapes and sizes that match the holding mechanism in the fire resistance test device. The planar shapes of the upper base plate 10b and the lower base plate 10c are typically rectangular. The upper base plate 10b and the lower base plate 10c are larger than the column body 10a and have flange parts 10e that protrude from the column body 10a on all four sides.

[0025] With reference to Fig. 3, the height dimension H1 of the column specimen 1 is a dimension exceeding 3000 mm, for example, 3500 mm. With reference to Fig. 4, the upper base plate (hereinafter referred to as "upper member") 10b is, for example, a square shape with a side L1 of about 800 mm. The protruding dimension L2 of the flange portion 10e as the edge portion of the upper member 10b is, for example, 100 to 200 mm.

[0026] 1, through holes 11 for, for example, hanging a crane hook are provided at the four corners of flange portion 10e of upper member 10b. Furthermore, a round hole (insertion hole) 12 is provided in flange portion 10e of upper member 10b in addition to through holes 11. The diameter of round hole 12 is approximately equal to the shaft diameter of second bolt 72 described below. In this embodiment, two (plural) round holes 12 are provided in one side of upper member 10b along the y direction.

[0027] During the production work in the specimen production space S1, the column specimen 1 is fixed to the structural frame 9 of the building via the holding member 2. For ease of understanding, the holding member 2 is hatched in Fig. 1. The holding member 2 includes a protruding member 3, a receiving member 4, and a connector 5.

[0028] 2 to 4, the protruding member 3 is fixed to a structural body 9 of a building and protrudes in the x direction from the structural body 9 at approximately the same height as the upper member 10b of the column test specimen 1. The receiving member 4 is provided so as to intersect with the tip of the protruding member 3 and extends along the y direction. Note that the "tip" refers to the part on the tip side, and is not limited to an example in which the protruding member 3 and the receiving member 4 are perpendicular to each other in a T-shape.

[0029] The connector 5 is fixed to the receiving member 4 with a first bolt 71, and is detachably fixed to the upper member 10b of the column test specimen 1 with a second bolt 72. As described in detail later, the connector 5 is an L-shaped angle having a vertical portion 51 provided with a first bolt hole for inserting the first bolt 71 therethrough, and a horizontal portion 52 provided with a second bolt hole for inserting the second bolt 72 therethrough.

[0030] According to the holding structure equipped with such a holding member 2, the column test specimen 1 can be fixed to the structural body 9 by mechanical fixing means using the bolts 71, 72, so that the column test specimen 1 can be prevented from falling over during the manufacturing work of the column test specimen 1. Furthermore, by making at least one of the first bolt hole and the second bolt hole in the connector 5 a loose hole that allows the bolt fixing position to be adjusted, it is possible to absorb errors in the installation position of the column test specimen 1 in the specimen manufacturing space S1.

[0031] Each part of the holding member 2 will be described in detail below. In the description of the holding member 2, for ease of understanding, the direction away from the structural body 9 to the specimen fabrication space S1 (one side in the x direction) will be referred to as the "front" and the opposite direction (the other side in the x direction) will be referred to as the "rear". The y direction will also be referred to as the "left-right direction".

[0032] (Regarding protruding parts) An example of the configuration of the protruding member 3 will be described with reference to Fig. 5 and Fig. 6. Fig. 5 is a side view of the protruding member 3, and Fig. 6 is a top view of the protruding member 3.

[0033] The protruding member 3 includes at least one arm member 31 and an arm support member 32. The arm member 31 is arranged horizontally with its base end fixed to the structural body 9. The installation position (height) of the arm member 31 corresponds to the height dimension L1 of the column test specimen 1, and is, for example, about 3000 to 4000 mm. The arm support member 32 has both ends connected and fixed to the structural body 9 and the longitudinal center (or tip) of the arm member 31.

[0034] The arm member 31 is, for example, an H-shaped steel, and extends straight forward from the structural frame 9. The protruding dimension L3 (FIG. 6) of the arm member 31 is, for example, about 1500 mm to 2500 mm. The arm member 31 is arranged so that the web portion 31a of the H-shaped steel is vertical. The base end of the arm member 31 is irremovably connected and fixed to the structural frame 9 by welding or bolts. Although it is preferable to directly fix the arm member 31 to the structural frame 9, it may be indirectly fixed via a separate member.

[0035] In this embodiment, a plurality of (for example, two) arm members 31 are arranged parallel to each other. The interval (pitch) D1 between the arm members 31 is 900 mm to 2000 mm, and in this embodiment, for example, 1400 mm to 1800 mm. This interval corresponds to the interval (pitch) between the skeleton columns 91.

[0036] In this embodiment, the arm support member 32 supports the arm member 31 from vertically above. Therefore, the fixing point between the arm support member 32 and the structural body 9 is higher than the fixing point between the arm member 31 and the structural body 9. As an example, the base end of the arm support member 32 is fixed to a structural body beam 92. The structural body beam 92 is, for example, an H-shaped steel, and extends in the y direction, intersecting with the upper end of the structural body column 91.

[0037] The arm support member 32 is, for example, a C-shaped steel. The arm support member 32 is arranged so that its opening faces the side. The base end of the arm support member 32 is also fixed to the structural body 9 by welding or bolts so that it cannot be removed. The same is true for the base end of the arm support member 32 and the arm member 31. In this way, the arm member 31 is reinforced in the vertical direction by the arm support member 32. In either fixing method, the two members may be fixed directly or via a separate member. In the example shown in FIG. 5, both ends of the arm support member 32 are fixed to the mating member by bolts via fixing plates 63, 64.

[0038] As shown in Fig. 6, it is desirable that the arm member 31 is not only reinforced vertically by the arm support member 32, but also horizontally by the tension member 33. In a plan view, the tension member 33 spans diagonally between the longitudinal center of the arm member 31 extending in the x direction and the longitudinal center of the receiving member 4 extending in the y direction. The fixing means at the connection portion between the tension member 33 and the mating member may be the same as the fixing means at the connection portion between the arm support member 32 and the mating member. In Fig. 6, the connection portion between the tension member 33 and the mating member is shown by a solid line.

[0039] In this embodiment, in a plan view, two brace members 33 are disposed symmetrically between two arm members 31. This makes it possible to appropriately maintain the distance between adjacent arm members 31 in the left-right direction (y direction) and to stably support the receiving member 4.

[0040] (Regarding receiving parts) As shown in Fig. 6, the receiving member 4 is disposed perpendicular to the two arm members 31. Both longitudinal ends of the receiving member 4 are fixed to the arm members 31. In this embodiment, the length dimension of the receiving member 4 is sufficiently longer than the interval D1 between the two arm members 31, and the receiving member 4 protrudes on both the left and right sides beyond the connection portion with the arm members 31. The length dimension L4 of the receiving member 4 is 2500 mm to 3500 mm, for example, 3000 mm. The receiving member 4 protrudes laterally by 500 mm or more beyond the intersection portion with the arm members 31.

[0041] Further referring to Fig. 7, an example of the configuration of the receiving member 4 will be described. Fig. 7 is an enlarged view of part VII of Fig. 5. The receiving member 4 is, for example, an L-shaped steel, and is arranged so that its opening faces rearward (towards the structural body 9). The receiving member 4 includes a side portion 41 arranged vertically facing the specimen production space S1, and an upper surface portion 42 and a lower surface portion 43 arranged horizontally by bending rearward from the upper and lower ends of the side portion 41. The side portion 41 forms an engagement portion with the connector 5.

[0042] As shown in FIG. 3, a plurality of round holes 410 are provided in the side portion 41 of the receiving member 4 along the longitudinal direction (y direction). The diameter of the round holes 410 in the side portion 41 is approximately equal to the shaft diameter of the first bolt 71. The round holes 410 are provided at a predetermined pitch along the y direction. The arrangement pitch P of the round holes 410 is, for example, about 250 mm. In this embodiment, the arrangement pitch P of the round holes 410 corresponds to half the arrangement pitch (for example, about 500 mm) of the two round holes 12 provided in the flange portion 10e of the upper member 10b of the column test specimen 1. This allows freedom in the installation position of the column test specimen 1 in the y direction.

[0043] As shown in Fig. 6, in this embodiment, the receiving member 4 is fixed to the arm member 31 via a separate member. Specifically, a plate 65 fitted into the internal space of the receiving member 4 is bolted to the web portion 31a of the arm member 31. This ensures that the receiving member 4 is securely fixed to the tip of the arm member 31. In this manner, the receiving member 4 is integrated with the protruding member 3 including the arm member 31 and fixed to the structural body 9. Note that the arm member 31 and the receiving member 4 may be directly welded together without using a separate member.

[0044] As described above, in this embodiment, both ends of the receiving member 4 that is long in the left-right direction are supported by two arm members 31. In addition, the center portion of the receiving member 4 is also fixed to a pair of bracing members 33. Therefore, deformation of the receiving member 4 can be prevented.

[0045] In addition, since the receiving member 4 extends to both sides beyond the fixed portion with the arm member 31, the specimen fabrication space S1 can be made wide in the y direction even if the distance D1 between the two structural columns 91 is relatively narrow. Therefore, as shown in Fig. 1 etc., in the specimen fabrication space S1, it is possible to work on multiple (e.g., two) column specimens 1 simultaneously. The specimen fabrication space S1 is a space located forward of the structural body 9 and including the receiving member 4 (or a space adjacent to the receiving member 4).

[0046] (About the configuration of the connector) An example of the configuration of the connector 5 will be described with reference to Figs. 8 to 11. Fig. 8(A) is a side view of the connector 5, Fig. 8(B) is a rear view of the connector 5 as viewed from the VIIIB direction of Fig. 8(A), and Fig. 8(C) is a bottom view of the connector 5 as viewed from the VIIIC direction of Fig. 8(A). Fig. 9 is a vertical cross-sectional view of the connector 5 in an attached state. Fig. 10 is a horizontal cross-sectional view of the connector 5 in an attached state, showing a cross-section along line XX in Fig. 9. Fig. 11 is a front view of the connector 5 in an attached state, as viewed from the XI-XI direction of Fig. 9.

[0047] 8, connector 5 is an L-shaped metal fitting, and has vertical portion 51 in which first bolt hole 510 is provided, and horizontal portion 52 in which second bolt hole 520 is provided. Connector 5 has a width dimension (dimension along the y direction) L5 of 80 mm to 150 mm, for example, and connector 5 has a height dimension (length of vertical portion 51) L6 and a depth dimension (length of horizontal portion 52) L7 of 150 mm to 250 mm, for example.

[0048] Both first bolt hole 510 and second bolt hole 520 are loose holes that allow the bolt position to be adjusted. In this embodiment, first bolt hole 510 is a loose hole that is long in the z direction, which is the height direction (vertical direction). Second bolt hole 520 is a loose hole that is long in the y direction, which is the left-right direction (horizontal direction). If the width of first bolt hole 510 is 1, its length is about 5 to 10. If the width of second bolt hole 520 is 1, its length is about 2 to 5.

[0049] (About installing the connector) As shown in Figs. 1 and 2, in the specimen production space S1, the column specimen 1 is connected and fixed to the receiving member 4 via a connector 5. As shown enlarged in Figs. 9 to 11, the connector 5 is attached to both the side portion 41 of the receiving member 4 and the upper member 10b of the column specimen 1. Specifically, the vertical portion 51 of the connector 5 is fixed to the side portion 41 of the receiving member 4 by a first bolt 71 and a nut 73. The horizontal portion 52 of the connector 5 is fixed to the upper member 10b of the column specimen 1 by a second bolt 72 and a nut 74.

[0050] The first bolt 71 is passed through the round hole 410 in the side portion 41 and the first bolt hole 510 in the vertical portion 51 in order along the x direction, for example, from the back side (rear) of the receiving member 4. The side portion 41 and the vertical portion 51 are fastened and fixed by the head of the first bolt 71 and a nut 73 screwed onto the tip of the shaft of the first bolt 71. The second bolt 72 is passed through the round hole 12 in the flange portion 10e of the upper member 10b and the second bolt hole 520 in the horizontal portion 52 in order along the z direction, for example, from above the upper member 10b. The head of the second bolt 72 and a nut 74 screwed onto the tip of the shaft of the second bolt 72 are fastened and fixed to the upper member 10b and the horizontal portion 52.

[0051] Here, since the column test specimen 1 is transported from another space to the test specimen fabrication space S1 by the overhead crane as described above, it is difficult to install the column test specimen 1 in an accurate position even if a mark indicating the installation position of the column test specimen 1 is attached to the floor surface of the test specimen fabrication space S1. It is conceivable to provide a positioning means on the floor surface of the test specimen fabrication space S1, such as a protrusion into which the lower base plate of the column test specimen 1 is fitted, but this is not realistic because of the risk of workers tripping. Therefore, when the column test specimen 1 suspended by the crane is placed on the floor surface of the test specimen fabrication space S1, the column test specimen 1 may be displaced in the x direction or y direction (or both directions). In addition, some manufacturing error is inherent in the height dimension H1 of the column test specimen 1.

[0052] The second bolt hole 520 of the connector 5 in this embodiment is a loose hole that is long in the y direction (left-right direction) as shown in FIG. 10. This makes it possible to absorb positional deviation of the column test specimen 1 in the y direction. In other words, even if the y direction position of the round hole 12 of the column test specimen 1 does not exactly match the y direction position of the round hole 410 of the receiving member 4 as shown in FIG. 10, the column test specimen 1 can be appropriately fixed to the connector 5 by the second bolt 72. Moreover, the first bolt hole 510 of the connector 5 in this embodiment is a loose hole that is long in the z direction (height direction) as shown in FIG. 11. This makes it possible to absorb manufacturing errors of the column test specimen 1.

[0053] Regarding the positional deviation of the column specimen 1 in the x direction (front-back direction), a spacer 8 may be used as shown in Fig. 9 and Fig. 10. The spacer 8 is a member that adjusts the distance in the x direction between the receiving member 4 and the vertical part 51 of the connector 5. The spacer 8 is composed of, for example, one or more flat washers. The thickness of the spacer 8 in the x direction can be adjusted by the number of flat washers.

[0054] In this manner, in this embodiment, the holding member 2 that holds the column test specimen 1 in the specimen fabrication space S1 includes the connector 5 having loose holes in the y and z directions, and the spacer 8 that adjusts the interval in the x direction. This makes it possible to absorb the positional deviation of the column test specimen 1 that is carried to the specimen fabrication space S1 by a crane, as well as the manufacturing error of the column test specimen 1. Therefore, the holding member 2 can stably hold the column test specimen 1, and the column test specimen 1 can be appropriately fixed to the structural frame 9. As a result, even if a horizontal or vertical vibration force is applied to the column test specimen 1 due to an earthquake or the like, the column test specimen 1 can be prevented from falling over.

[0055] The connector 5 may be temporarily fastened to the receiving member 4 before the column test specimen 1 is transported to the specimen production space S1. In this case, the column test specimen 1 can be moved by an overhead crane so that the flange portion 10e of the column test specimen 1 rests on the horizontal portion 52 of the connector 5, so that the connector 5 also functions as a positioning means for the column test specimen 1.

[0056] After the manufacturing work of the column test specimen 1 is completed, it is desirable to remove the second bolt 72 and the connector 5 from the column test specimen 1A. In other words, it is desirable to leave the connector 5 on the receiving member 4. In this way, the column test specimen 1A with the connector 5 removed can be moved to the test space S2, so that extra work in the test space S2 (work to remove the connector 5) can be eliminated.

[0057] In this way, in consideration of the crane movement of the column test specimen 1 (1A), it is desirable that the horizontal part 52 of the connector 5 be disposed on the underside of the upper member 10b of the column test specimen 1 in the attached state so that the horizontal part 52 does not get in the way during the movement. The connector 5 may be attached to the column test specimen 1 in advance, and in this case, the horizontal part 52 of the connector 5 may be disposed on the upper side of the upper member 10b of the column test specimen 1 in the attached state.

[0058] (Modification) In the present embodiment, an example has been described in which the first bolt hole 510 in the vertical portion 51 of the connector 5 is a loose hole elongated in the z direction, and the second bolt hole 520 in the horizontal portion 52 is a loose hole elongated in the y direction, but the present invention is not limited to such an example. Modified examples of the connector 5 are shown in Figs. 12 and 13.

[0059] Fig. 12 is a vertical cross-sectional view showing the mounting structure of a connector 5A in a modified example of the embodiment of the present invention. Fig. 13 is a front view showing the mounting structure of a connector 5A in a modified example of the embodiment of the present invention, as seen from the XIII-XIII direction of Fig. 12. In the connector 5A shown in Figs. 12 and 13, the first bolt hole 511 in the vertical part 51 is a loose hole long in the y direction, and the second bolt hole 521 in the horizontal part 52 is a loose hole long in the x direction. In this case, even if the spacer 8 is not provided, the positional deviation of the column specimen 1 in both the x and y directions can be absorbed.

[0060] In this modification, a spacer 8 may be provided between the upper member 10b of the column test specimen 1 and the horizontal part 52 of the connector 5A. This allows the distance between the upper member 10b and the horizontal part 52 in the height direction (z direction) to be adjusted, making it possible to deal with manufacturing errors in the height dimension of the column test specimen 1.

[0061] (Other variations) In this embodiment, as shown in Fig. 4 etc., an example has been shown in which the arm member 31 (protruding member 3) and the receiving member 4 intersect at right angles in a T-shape, but the arm member 31 may protrude forward of the receiving member 4. In this case, a connector can also be fixed to the protruding portion of the arm member 31. In other words, the column test specimen 1 may be bolted not only to the receiving member 4 but also to the protruding portion of the arm member 31 via a connector (not shown). In this case, the configurations of the arm member 31 and the connector can be similar to those of the receiving member 4 and the connector 5 described above, respectively.

[0062] In addition, in this embodiment, an example has been shown in which the test specimen to be produced in the test specimen production space S1 is the column test specimen 1, but the above technology can also be applied to long test specimens (for example, test specimens of walls or panel frames) other than the column test specimen 1. The upper member does not have to be entirely plate-shaped, as long as the portion (edge) where the round hole as the insertion hole is provided is plate-shaped.

[0063] The embodiments disclosed herein should be considered to be illustrative and not restrictive in all respects. The scope of the present invention is defined by the claims, not the above description, and is intended to include all modifications within the meaning and scope of the claims. [Explanation of symbols]

[0064] 1,1A column test specimen, 2 retaining member, 3 protruding member, 4 receiving member, 5,5A connector, 8 spacer, 9 structural body, 10b upper member (upper base plate), 10e flange portion (edge ​​portion), 12,410 round hole (insertion hole), 31 arm member, 32 arm support member, 41 side portion (engagement portion), 51 vertical portion, 52 horizontal portion, 71 first bolt, 72 second bolt, 510,511 first bolt hole, 520,521 second bolt hole, S1 test specimen manufacturing space, S2 test space.

Claims

1. A support structure for supporting a long test specimen in a vertical direction in a test specimen production space in a building, a protruding member fixed to a structural frame of the building and protruding from the structural frame in an x-direction toward the specimen fabrication space at approximately the same height as the upper member of the long specimen; a receiving member provided to intersect with a tip end of the protruding member and extending along a y direction perpendicular to the x direction; a connector that is fixed to the receiving member by a first bolt and that is detachably fixed to the upper member of the long test body by a second bolt; The connector has a vertical portion having a first bolt hole through which the first bolt is inserted and a horizontal portion having a second bolt hole through which the second bolt is inserted, A holding structure for a long test specimen, wherein at least one of the first bolt hole and the second bolt hole is a loose hole whose bolt fixing position is adjustable.

2. the receiving member has an engagement portion provided with an insertion hole through which the first bolt is inserted, the upper member has an edge portion provided with an insertion hole through which the second bolt is inserted, The first bolt hole of the vertical portion is a loose hole that is long in the z direction, which is the height direction, 2. The holding structure for a long test specimen according to claim 1, wherein the second bolt hole in the horizontal portion is a loose hole that is long in the y direction.

3. The holding structure for a long test specimen according to claim 2 , further comprising a spacer for adjusting a distance in the x direction between the receiving member and the vertical portion.

4. the receiving member has an engagement portion provided with an insertion hole through which the first bolt is inserted, the upper member has an edge portion provided with an insertion hole through which the second bolt is inserted, The first bolt hole of the vertical portion is a loose hole that is long in the y direction, 2. The holding structure for a long test specimen according to claim 1, wherein the second bolt hole in the horizontal portion is a loose hole that is long in the x-direction.

5. 5. The holding structure for a long test specimen according to claim 4, further comprising a spacer for adjusting a distance in a height direction between said upper member and said horizontal portion.

6. 6. The holding structure for a long test specimen according to claim 2, wherein the engagement portion has a plurality of the insertion holes provided at a predetermined pitch along the y direction.

7. The holding structure for a long test specimen according to claim 1 , wherein the horizontal portion of the connector is disposed on a lower surface side of the upper member of the long test specimen.

8. The holding structure for a long test specimen as described in claim 1, wherein the protruding member includes at least one arm member arranged horizontally with its base end fixed to the structural body, and an arm support member whose both ends are connected and fixed to the structural body and the central portion or tip portion of the arm member.

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