Method and apparatus for testing the strength of walls

Abstract

To reduce cost and labor and perform a concentrated load test on a high wall.SOLUTION: A wall strength testing method includes: a first step of supporting, in a sideways state in which one side in a width direction of a test piece 1A with a wall longer in a height direction than in the width direction is set downward and the other side is set upward, both ends in the height direction of the test piece 1A with a pair of holding members 11a and 11b of a strength testing device 10, and holding the test piece 1A in the sideways state; and a second step of applying a load to a predetermined position in the height direction of the test piece 1A in the sideways state from one surface side of the test piece 1A with a pressure member 13 of the strength testing device 10.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present disclosure relates to a method for testing the strength of a wall and a strength testing apparatus.

Background Art

[0002] Patent Document 1 discloses a panel member that is used in buildings such as huts, warehouses such as disaster prevention storage warehouses, and shelters, can suppress the penetration of a collided object, and can achieve weight reduction. In this panel member, a strength test is performed to verify its strength. The strength test of the panel member is to place the panel member on a pedestal with a height of 200 mm at both ends with one side of the panel surface facing upward, apply a load to the center of the panel member to greatly deform the panel body, and then check for damage to the panel member.

Prior Art Documents

Patent Documents

[0006] Therefore, the purpose of this disclosure is to provide a wall strength testing method and a strength testing apparatus that enable concentrated load testing on high walls while reducing costs and labor. [Means for solving the problem]

[0007] To solve the above problems, a wall strength test method according to the first aspect of the present invention includes a first step of supporting both ends of a wall test specimen in the height direction, with the specimen lying on its side with one side in the width direction facing downwards and the other side facing upwards, and holding the specimen in the lying-down position; and a second step of applying a load from one side of the specimen to a predetermined position in the height direction of the specimen in the lying-down position.

[0008] A second aspect of the present invention is a method for testing the strength of a wall according to the first aspect, wherein in the first step, one end edge on one side in the width direction of the test specimen is held in a state where it is floating upward from the base.

[0009] A third aspect of the present invention is a method for testing the strength of a wall according to the second aspect, wherein in the first step, a support member that is movable relative to the base in a direction intersecting the test specimen is placed between the one end edge of the test specimen and the base, and the test specimen is supported from below by the support member.

[0010] A fourth aspect of the present invention is a method for testing the strength of a wall according to any of the first to third aspects, wherein the region in which a load is applied to the test specimen in the second step is a region extending in the width direction at the predetermined position of the test specimen.

[0011] A fifth aspect of the present invention is a wall strength testing apparatus comprising: a pair of holding members that support both ends of a wall test specimen in the height direction, with the specimen lying on its side with one side in the width direction downward and the other side upward, and holding the specimen in an upright position; and a pressing member that applies a load to the specimen supported by the pair of holding members from one side of the specimen in a direction intersecting the specimen.

[0012] A sixth aspect of the present invention is a wall strength testing apparatus according to the fifth aspect, comprising a support member for supporting the test specimen from below, wherein the pair of holding members holds one end edge on one side in the width direction of the test specimen in a state where it is floating above the base, and the support member is positioned between the one end edge of the test specimen and the base, and is movable relative to the base in a direction intersecting the test specimen while supporting the test specimen. [Effects of the Invention]

[0013] According to this disclosure, concentrated load tests can be performed on high walls while reducing costs and labor. [Brief explanation of the drawing]

[0014] [Figure 1] This is an explanatory diagram of a wall installed in a building. [Figure 2]These are explanatory diagrams of the wall test specimen, where (a) shows the framework viewed from the front, (b) shows the framework viewed from the side, (c) shows the framework with the underlayment applied, and (d) shows the framework with the overlay applied. [Figure 3] This is a front view of the strength testing apparatus. [Figure 4] This is a perspective view of the strength testing apparatus. [Figure 5] This is a cross-sectional view taken along the VV arrow in Figure 3. [Figure 6] This is an explanatory diagram showing the points where the test specimen is pressed. [Modes for carrying out the invention]

[0015] An embodiment of the present invention will be described below with reference to the drawings. In each figure, UP indicates upward, X indicates the height direction of the high wall, Y indicates the width direction of the high wall, and Z indicates the thickness direction of the high wall. In the following description, the vertical direction refers to the vertical direction at the location where the test is performed, the height direction of the high wall refers to the vertical direction when the high wall is installed in a building, and the width direction of the high wall refers to the direction that intersects both the vertical direction and the thickness direction of the high wall when the high wall is installed in a building.

[0016] Figure 1 is an explanatory diagram of a wall installed in a building.

[0017] A strength testing method and strength testing apparatus according to one embodiment of the present invention are a method and apparatus for verifying the strength of a wall, and are used, for example, as shown in Figure 1, to verify the strength of a high wall (wall) 1 installed in a building such as a warehouse, where the height from floor to ceiling is higher than that of a normal building such as a house. The high wall 1 functions as a partition wall in a warehouse or the like that requires high load-bearing capacity. That is, the wall 1 in this embodiment satisfies the strength stipulated in the Warehouse Business Act, and has a strength of 2500 N / m 2 This is a high wall 1 that can withstand the above load.

[0018] The high wall 1 includes upper and lower runners 2a, 2b, a plurality of studs 3 standing upright between the upper and lower runners 2a, 2b, a plurality of spacers 4 attached to the studs 3, a plurality of anti-sway members 5, and double-sided two-layer boards 6a, 6b.

[0019] The upper and lower runners 2a, 2b are long members formed by shaping lightweight steel (lightweight steel framing) into a groove shape with a C-shaped cross-section. They are fixed to the upper and lower building frames Sa, Sb (for example, the ceiling slab Sa and the floor slab Sb) and extend in the width direction (Y direction in FIG. 1) of the high wall 1. The upper and lower runners 2a, 2b extend in the width direction at the upper and lower ends of the high wall 1 (hereinafter simply referred to as the "width direction") and function as the lateral (width direction) framework of the high wall 1. The upper runner 2a is fixed to the lower surface of the upper frame Sa with the groove opening downward and extends in the width direction along the lower surface of the upper frame Sa. The lower runner 2b is fixed to the upper surface of the lower frame Sb with the groove opening upward and extends in the width direction along the upper surface of the lower frame Sb. In this embodiment, the upper and lower runners 2a, 2b are arranged substantially parallel to each other.

[0020] The studs 3 are long members formed by shaping lightweight steel (lightweight steel framing) into a groove shape with a C-shaped cross-section and extending in the vertical direction (X direction in FIG. 1) between the upper and lower runners 2a, 2b. They function as the vertical (up and down) framework of the high wall 1. The upper ends of the plurality of studs 3 are inserted into the groove of the upper runner 2a and fixed to the upper runner 2a. The lower ends of the plurality of studs 3 are inserted into the groove of the lower runner 2b and fixed to the lower runner 2b. In this embodiment, two studs 3 with their webs in contact and back-to-back are used as a set.

[0021] The spacer 4 is a fitting for securing the space between the open-side ends of the grooves of the studs 3. It is attached to the open-side ends of the grooves of the studs 3 in a state of being vertically spaced apart from each other to reinforce the studs 3. Also, the spacer 4 has the function of attaching the anti-sway member 5 to the stud 3 side. The spacer 4 is attached to the studs 3 at a predetermined interval (for example, at an interval of 600 mm) vertically.

[0022] The bracing member 5 is a member that connects multiple studs 3 to prevent them from vibrating, and is attached to the studs 3 by spacers 4 with the spacers 4 inserted through openings (not shown) provided in the web of the studs 3. The bracing members 5 are attached to the studs 3 vertically at predetermined intervals (for example, 1200 mm intervals).

[0023] Boards 6a and 6b are, for example, rectangular gypsum boards and are fixed to upper and lower runners 2a and 2b and a plurality of studs 3. In this embodiment, there is an underlayment board 6a fixed to the upper and lower runners 2a and 2b and a plurality of studs 3 by screws (not shown), and an overlayment board 6b fixed to the underlayment board 6a by staples and adhesive, etc., and these are provided on both sides of the high wall 1. The underlayment board 6a is fixed to the upper and lower runners 2a and 2b and a plurality of studs 3 in a state in which it is elongated in the direction intersecting the vertical direction (Y direction in Figure 1). The overlayment board 6b is fixed to the underlayment board 6a in a state in which it is elongated in the vertical direction (X direction in Figure 1).

[0024] Next, the test specimen 1A (hereinafter sometimes simply referred to as "test specimen 1A") of the wall to be tested by the strength testing method and strength testing apparatus according to this embodiment will be described.

[0025] Figure 2 is an explanatory diagram of the wall test specimen, where (a) shows the frame viewed from the front, (b) shows the frame viewed from the side, (c) shows the frame with the underlayment applied, and (d) shows the frame with the overlay applied.

[0026] As shown in Figure 2, when verifying the strength of the high wall 1, a test specimen 1A of the wall is first prepared. The test specimen 1A is the subject of testing for the strength testing method and strength testing apparatus according to this embodiment, and is a test specimen 1A that is longer in the height direction (X direction) than in the width direction (Y direction). The test specimen 1A of this embodiment comprises upper and lower runners 2a, 2b, four sets of studs 3 (two in a pair) standing upright between the upper and lower runners 2a, 2b, a plurality of spacers 4 attached to the studs 3, five bracing members 5, and double-sided double-layered boards 6a, 6b. The test specimen 1A is formed by fixing the underlayment board 6a (see Figure 2(c)) to the framework (see Figure 2(c)) composed of the upper and lower runners 2a, 2b, the plurality of studs 3, the plurality of spacers 4, and the plurality of bracing members 5, and then fixing the upper laying board 6b (see Figure 2(d)).

[0027] In this embodiment, the dimensions of test specimen 1A are set to a height (length in the X direction) of 7000 mm to 8000 mm, a width (length in the Y direction) of 910 mm, and a thickness (length in the Z direction) of 150 mm.

[0028] Next, a strength testing apparatus 10 according to one embodiment of the present invention will be described.

[0029] Figure 3 is a front view of the strength testing apparatus. Figure 4 is a perspective view of the strength testing apparatus. Figure 5 is a cross-sectional view taken along the VV line in Figure 3. Figure 6 is an explanatory diagram of the area where the test specimen is pressed.

[0030] As shown in Figures 3 to 6, the strength testing apparatus 10 according to this embodiment includes a pair of holding members 11a, 11b that support both ends of the test specimen 1A in the height direction (X direction), a pair of support members 12a, 12b that support the test specimen 1A from below, and a pressurizing member 13 that can apply a load to the test specimen 1A.

[0031] The pair of holding members 11a and 11b support both ends of the test specimen 1A in the height direction when it is lying on its side with one side in the width direction (Y direction) downwards and the other side upwards, thereby holding the test specimen 1A in an upright position while lying on its side (hereinafter simply referred to as the "lying-side state"). That is, in the lying-side state, the height direction (X direction) of the high wall 1 (test specimen 1A) is the direction that intersects with the up-and-down direction (for example, the horizontal direction), and the width direction (Y direction) of the high wall 1 (test specimen 1A) is the up-and-down direction. For the sake of clarity, in the following explanation, the height direction (X direction) of the test specimen 1A may be referred to as the "longitudinal direction," and the width direction (Y direction) of the test specimen 1A may be referred to as the "short direction."

[0032] The pair of holding members 11a, 11b in this embodiment have base portions 15a, 15b fixed to the floor (base) 30 and runner support portions 16a, 16b fixed to the base portions 15a, 15b, and are arranged on both sides in the height direction of the high wall 1 when it is lying on its side. The pair of runner support portions 16a, 16b have opposing surfaces 17a, 17b that extend in the vertical direction and face each other. The runners 2a, 2b of the test specimen 1A are fixed to the opposing surfaces 17a, 17b of the pair of runner support portions 16a, 16b in a state where they extend in the vertical direction. The pair of holding members 11a, 11b hold the lower end edge (one end edge) 18 of the test specimen 1A in a state where it is floating above the floor 30. In this embodiment, the floor 30 is used as the base, but the invention is not limited to this, and for example, a base that is formed separately from the floor 30 and placed on the floor 30 may also be used.

[0033] A pair of support members 12a and 12b are positioned between the lower edge 18 of the test specimen 1A and the floor 30, supporting the test specimen 1A from below. One support member 12a is located on one longitudinal side of the pressure member 13 and is positioned between the pressure member 13 and one of the holding members 11a. The other support member 12b is located on the other longitudinal side of the pressure member 13 and is positioned between the pressure member 13 and the other holding member 11b. In other words, the support members 12a and 12b are provided between the pressure member 13 and the pair of holding members 11a and 11b in the height direction of the test specimen 1A.

[0034] A pair of support members 12a and 12b are movable relative to the floor 30 in the thickness direction (Z direction (direction intersecting the test specimen)) of the test specimen 1A while supporting the test specimen 1A. In this embodiment, the pair of support members 12a and 12b each have a support body 19 that supports the test specimen 1A and a plurality of casters 20 fixed below the support body 19. These plurality of casters 20 allow the pair of support members 12a and 12b to move relative to the floor 30 in the thickness direction of the test specimen 1A while supporting the test specimen 1A. In this embodiment, the pair of support members 12a and 12b are made movable relative to the floor 30 in the thickness direction of the test specimen 1A by providing a plurality of casters 20, but this is not the only way. For example, a rail or the like may be provided on the base side, and the pair of support members 12a and 12b may be attached to the rail so that they can slide.

[0035] The pressurizing member 13 is positioned on one side of the test specimen 1A and applies a load in the thickness direction from one side of the test specimen 1A to the test specimen 1A, which is in a lying position supported by a pair of holding members 11a and 11b. In this embodiment, the pressurizing member 13 is positioned approximately in the center of the longitudinal direction of the test specimen 1A and applies the load approximately in the center of the longitudinal direction of the test specimen 1A.

[0036] The pressurizing member 13 includes a frame 21, an actuator 22 supported by the frame 21, a pressurizing unit 23 that is pushed out by the actuator 22 to apply pressure (load) to the test specimen 1A, and a load detection unit 24 that detects the load being applied to the test specimen 1A.

[0037] The support frame 21 is positioned at a distance from one surface of the test specimen 1A and is fixed to the floor 30. The support frame 21 has a facing surface 21a that is opposite to one surface of the test specimen 1A.

[0038] The actuator 22 is, for example, an extendable hydraulic cylinder, supported on the frame 21 so as to extend from the opposing surface 21a of the frame 21 toward one side of the test specimen 1A. Note that the actuator 22 is not limited to a hydraulic cylinder, but any actuator capable of moving the pressurizing section 23 from the frame 21 toward the test specimen 1A is acceptable.

[0039] The pressurizing section 23 is a member that presses against one side of the test specimen 1A and is fixed to the tip of the actuator 22 via a load detection section 24, which will be described later. The pressurizing section 23 has a contact surface 23a that faces one side of the test specimen 1A. The contact surface 23a of the pressurizing section 23 comes into contact with one side of the test specimen 1A when the pressurizing section 23 is moved toward the test specimen 1A side by the actuator 22 (in the direction indicated by the white arrow in Figure 6) (see Figure 4). In this embodiment, the pressurizing section 23 is formed in the shape of a rod extending in the vertical direction. The lower end of the pressurizing section 23 is supported on the floor 30 via a plurality of casters 25. As a result, the pressurizing section 23 is supported on the floor 30 in a state that allows it to move relative to the floor 30 in the thickness direction of the test specimen 1A. The pressurizing section 23 applies pressure (load) to the test specimen 1A when pressed by the actuator 22. Note that the shape of the pressurizing section 23 is not limited to the above and can be changed to other shapes depending on the content of the test.

[0040] The load detection unit 24 is, for example, a load cell, positioned between the actuator 22 and the pressurizing unit 23, and fixed to the actuator 22 and the pressurizing unit 23. The load detection unit 24 detects the load applied to the test specimen 1A when the pressurizing unit 23 applies pressure to the test specimen 1A. The load detected by the load detection unit 24 may be displayed on, for example, a monitor of an external device 26, or printed on paper. The load detection unit 24 only needs to be capable of detecting the load applied to the test specimen 1A, and its position is not limited to between the actuator 22 and the pressurizing unit 23.

[0041] Next, a strength test method relating to one embodiment of the present invention will be described.

[0042] In the strength testing method according to this embodiment, the strength of the test specimen 1A of the high wall 1 is tested using the strength testing apparatus 10, thereby verifying the strength of the high wall 1.

[0043] When performing a strength test on a test specimen 1A of a high wall 1, first, the test specimen 1A is held in a lying position by supporting both ends in the longitudinal direction (height direction) of the test specimen 1A with a pair of holding members 11a and 11b of the strength testing device 10 (first step). That is, in the first step, the test specimen 1A is held in a lying position by supporting both ends in the longitudinal direction (height direction) of the test specimen 1A. In the first step, a pre-prepared test specimen 1A may be laid on its side and fixed to the pair of holding members 11a and 11b of the strength testing device 10, or runners 2a and 2b may be fixed to runner support parts 16a and 16b, and multiple studs 3, multiple spacers 4, multiple bracing members 5, and double-sided double-layered boards 6a and 6b may be attached to these runners 2a and 2b to create the test specimen 1A.

[0044] In the first step, it is preferable to hold the lower edge 18 of the test specimen 1A in the short direction (width direction) in a state where it is floating above the floor 30. In this case, it is also preferable to place at least one of the support members 12a and 12b between the lower edge 18 of the test specimen 1A and the floor 30, and to support the test specimen 1A from below with the support member. Furthermore, it is even more preferable to place the support members 12a and 12b on both sides in the longitudinal direction of the portion of the test specimen 1A that is pressed by the pressurizing member 13 (in this embodiment, the central part in the longitudinal direction).

[0045] Next, the actuator 22 of the pressure member 13 of the strength testing device 10 is activated to press one surface of the test specimen 1A in the thickness direction with the pressure section 23 (second step). That is, in the second step, a load is applied from one side of the test specimen 1A to a predetermined position in the longitudinal direction (height direction) of the test specimen 1A in a lying position. In this embodiment, the pressure section 23 is formed in the shape of a rod extending in the vertical direction, so the area to which the load is applied to the test specimen 1A is the area extending in the short direction (width direction) at the predetermined position in the longitudinal direction of the test specimen 1A. In this embodiment, the pressure section 23 of the pressure member 13 is formed in the shape of a rod extending in the vertical direction, and the load is applied to the area (linear area) extending in the short direction (width direction) of the test specimen 1A with the pressure section 23, but it is not limited to this. For example, the pressure section 23 of the pressure member 13 may be formed in the shape of a circle or rectangle, and the load may be applied to a predetermined circular or rectangular point on the test specimen 1A with the pressure section 23.

[0046] In the strength test according to this embodiment, in order to verify the maximum load-bearing capacity, the test specimen 1A is pressurized by the pressurizing member 13 until it is damaged (e.g., buckled). While pressurizing is being applied to the test specimen 1A before it is damaged, the amount of displacement of the test specimen 1A in relation to the load is measured by measuring the load detected by the load detection unit 24 and the amount of displacement of the test specimen 1A, and the damage to the test specimen 1A is observed visually. After the test specimen 1A is damaged and pressurizing is stopped, the load and amount of displacement at the time of damage are recorded, and the location and extent of the damage to the test specimen 1A are observed visually. Note that the amount of displacement of the test specimen 1A may be measured at any location other than the central part in the longitudinal direction of the test specimen 1A, such as the upper and lower ends (both ends in the width direction) of the test specimen 1A.

[0047] The strength of the high wall 1 is verified based on the load (input load) at the time of damage to the test specimen 1A measured in the strength test described above, and the amount of displacement when a predetermined load is applied. For example, in the external force resistance test of the high wall 1, if the amount of deflection (displacement) of the high wall 1 when a horizontal force of 150 kgf / m, which is the force when a person leans on it, is 1 / 200th or less of the height (length in the height direction) of the high wall 1, it may be concluded that the high wall 1 has the strength to withstand external forces. Note that the performance verified by the strength test is not limited to the performance exemplified above.

[0048] In the strength testing apparatus 10 and strength testing method configured as described above, both ends of the test specimen 1A in the height direction are supported by a pair of holding members 11a and 11b, and the test specimen 1A is held upright in a horizontal position with one side in the width direction (Y direction) downwards and the other side upwards. Since the test specimen 1A is upright in this way, the influence of the uniformly distributed load due to the weight of the test specimen 1A during testing can be suppressed. Therefore, compared to when the test is performed with the test specimen 1A intersecting the vertical direction, accurate verification when a concentrated load is applied can be performed.

[0049] Furthermore, since test specimen 1A is positioned horizontally, unlike the normal vertical position (where test specimen 1A is upright with the height direction being vertical), the center of gravity of test specimen 1A can be lowered. Therefore, unlike when test specimen 1A is held in a vertical position, test specimen 1A is less likely to tip over, and the structure required to prevent test specimen 1A from tipping over can be simplified, thus reducing costs and making it easier to hold test specimen 1A.

[0050] Furthermore, since test specimen 1A is positioned on its side, the test can be conducted even if the building where the test is performed has a low ceiling height.

[0051] Furthermore, since the test specimen 1A is lying on its side, unlike when the test specimen 1A is held in an upright position, it is not necessary to lift the device that applies load to the test specimen 1A (in this embodiment, the pressurizing member 13) to a high position. This reduces the effort required to perform the test.

[0052] Furthermore, since the test specimen 1A is positioned on its side, the position to which the load is applied to the test specimen 1A can be easily changed in the height direction (longitudinal direction). This makes it easy to verify the strength of high walls 1 at various heights.

[0053] Thus, according to this embodiment, a concentrated load test can be performed on the high wall 1 while reducing costs and labor.

[0054] Furthermore, by using a pair of holding members 11a and 11b to hold the lower edge 18 of the test specimen 1A in a lying position, lifted off the floor 30, the effect of friction between the test specimen 1A and the floor 30 can be suppressed.

[0055] Furthermore, when the lower edge 18 of the test specimen 1A in a lying position is lifted from the floor 30, the downward deflection of the test specimen 1A in a lying position can be suppressed by supporting the lower edge 18 of the test specimen 1A from below with support members 12a and 12b, thereby enabling accurate verification when a concentrated load is applied.

[0056] Furthermore, since the support members 12a and 12b are movable relative to the floor 30 in a direction intersecting with the test specimen 1A (thickness direction), when the test specimen 1A deforms, the support members 12a and 12b can follow the test specimen 1A while supporting the test specimen 1A. This suppresses the downward deflection of the test specimen 1A when it is lying on its side, and also reduces the effect of friction between the support members 12a and 12b and the floor 30.

[0057] Furthermore, since the pressurizing portion 23 of the pressurizing member 13 is formed in a rod shape extending in the vertical direction, the area on which the load is applied to the test specimen 1A is the area extending in the short direction (width direction) at the predetermined position in the longitudinal direction of the test specimen 1A. This makes it possible to perform a concentrated load test of a line load applied at a predetermined height position on the test specimen 1A. In addition, since the lower end of the pressurizing portion 23 is supported on the floor 30 via a plurality of casters 25, the weight of the pressurizing portion 23 on the actuator 22 can be reduced, and the effect of friction between the pressurizing portion 23 and the floor 30 can be reduced.

[0058] In this embodiment, support members 12a and 12b are provided on both sides of the test specimen 1A in the longitudinal direction relative to the pressurizing member 13, but the embodiment is not limited to this. For example, if the pressurizing member 13 is positioned on one side of the longitudinal center of the test specimen 1A (for example, on the side of the holding member 11a), the support members may be provided only on the other side of the test specimen 1A in the longitudinal direction relative to the pressurizing member 13.

[0059] Furthermore, in this embodiment, the pair of holding members 11a, 11b and the pressurizing member 13 of the strength testing device 10 are fixed to the floor 30, but this is not limited to this. For example, a dedicated base may be provided for the strength testing device 10, and the pair of holding members 11a, 11b and the pressurizing member 13 may be fixedly mounted on this base. In this case, the pair of support members 12a, 12b may be provided so as to be movable relative to the dedicated base for the strength testing device 10 in a direction intersecting with the test specimen 1A.

[0060] Although the present invention has been described above based on the above embodiments, the present invention is not limited to the contents of the above embodiments, and can naturally be modified as appropriate without departing from the present invention. In other words, all other embodiments, examples, and operational techniques made by those skilled in the art based on these embodiments are of course included in the scope of the present invention. [Explanation of Symbols]

[0061] 1: High wall (wall) 1A: Test specimen 10: Strength testing device 11a, 11b: A pair of retaining members 12a, 12b: Support members 13: Pressurizing member 18: Lower edge of the test specimen (one end edge) 30: Floor (base)

Claims

1. The first step is to hold a test specimen in a sideways position, with one side in the width direction facing downwards and the other side facing upwards, by supporting both ends of the test specimen in the height direction, wherein the test specimen has a wall that is longer in the height direction than in the width direction. The second step includes applying a load from one side of the test specimen to a predetermined position in the height direction of the test specimen while it is lying on its side. A method for testing the strength of a wall, characterized by the following features.

2. In the first step, the one end edge on one side in the width direction of the test specimen is held in a state where it is lifted upward from the base. The method for testing the strength of a wall according to feature 1.

3. In the first step, a support member that is movable relative to the base in a direction intersecting the test specimen is placed between the one end edge of the test specimen and the base, and the test specimen is supported from below by the support member. The method for testing the strength of a wall according to feature 2.

4. In the second step, the region in which a load is applied to the test specimen is the region extending in the width direction at the predetermined position of the test specimen. A method for testing the strength of a wall according to any one of claims 1 to 3.

5. A pair of holding members that support both ends of a wall test specimen in the height direction, holding the specimen upright, in a horizontal position with one side in the width direction downwards and the other side upwards, where the wall test specimen is longer in the height direction than in the width direction, The system includes a pressure member that applies a load to the test specimen, which is supported by the pair of holding members, from one side of the test specimen in a direction intersecting the test specimen. A wall strength testing apparatus characterized by the following features.

6. The test specimen is provided with a support member that supports it from below, The pair of holding members hold the one end edge on one side in the width direction of the test specimen in a state where it is lifted upward from the base. The support member is positioned between the one end edge of the test specimen and the base, and is movable relative to the base in a direction intersecting the test specimen while supporting the test specimen. The wall strength testing apparatus according to feature 5.

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