Quasi-static test device with floor frame structure and test method thereof

Abstract

The invention relates to a pseudo-static test device with a floor frame structure and a test method thereof. The method is suitable for the technical field of building structures. According to the technical scheme, the quasi-static test device with the floor slab frame structure comprises a floor slab frame test piece internally provided with a floor slab which is horizontally arranged; the bottom support frame is arranged at the bottom of the floor frame test piece and is used for fixing the floor frame test piece on the ground; the top limiting frame is arranged at the top of the floor frame test piece, the two ends of the top limiting frame are correspondingly connected with the two ends of the floor frame test piece, and the top limiting frame is used for bearing the load applied by the actuator; the lateral limiting frames are symmetrically arranged on the two sides of the floor frame test piece, the side walls of the tops of the lateral limiting frames abut against the side walls of the corresponding sides of the floor in a sliding mode, the lateral limiting frames are used for limiting the two sides of the floor to form boundary constraint, and the floor can relatively slide in the loading direction in the loading process.

Description

Technical Field

[0001] The invention relates to the field of building structures, in particular to a pseudo-static test device with a floor frame structure and a test method thereof. Background Art

[0002] In current building structural design, frame structures are widely used due to their excellent spatial adaptability and load-bearing capacity. These structures must not only withstand vertical loads such as the building's own weight and operational loads, but also resist horizontal loads such as wind and earthquakes. Under these loads, the coordination between the floor slab and the frame beams and columns is crucial. The floor slab not only serves as a space divider but also, through its interaction with the frame structure, enhances the stiffness and load-bearing capacity of the entire structural system, significantly impacting the overall seismic performance of the structure.

[0003] However, in existing pseudo-static tests, floor slabs are typically assumed to have free-deforming boundary conditions, meaning they are unconstrained on either side. While this simplified approach facilitates experimental operation and analysis, it does not accurately reflect the actual situation in engineering. In reality, except for portions of the floor slab near edges or openings, which have free boundary conditions, the majority of the floor slab is constrained by surrounding walls or other structural elements, creating a more complex boundary condition. These constraints significantly influence the deformation pattern and stress distribution of the floor slab, and thus the response characteristics of the entire structure.

[0004] In order to overcome the problem that existing research is inconsistent with actual conditions, it is particularly necessary to develop a pseudo-static test device that can accurately simulate the real boundary conditions of the floor frame structure. Summary of the Invention

[0005] The technical problem to be solved by the present invention is: in view of the above-mentioned problems, a pseudo-static test device with a floor frame structure and a test method thereof are provided.

[0006] The technical solution adopted by the present invention is: a pseudo-static test device with a floor frame structure, comprising:

[0007] Floor frame specimen, with horizontally arranged floor slabs inside;

[0008] A bottom support frame is provided at the bottom of the floor frame specimen and is used to fix the floor frame specimen on the ground;

[0009] The top limit frame is provided at the top of the floor frame specimen, and the two ends of the top limit frame are correspondingly connected to the two ends of the floor frame specimen, and is used to bear the load applied by the actuator;

[0010] The lateral limit frames are symmetrically arranged on both sides of the floor frame specimen. The top side walls of the lateral limit frames slide against the corresponding side walls of the floor, which are used to limit the two sides of the floor to form boundary constraints and enable the floor to slide relatively along the loading direction during loading.

[0011] Through these technical measures, the combined action of the bottom support frame and the top limit frame ensured the stability of the floor frame specimen throughout the loading process, improving the reliability and accuracy of the test data. By installing lateral limit frames on both sides of the floor slab, boundary constraints were established for the floor slab. This is consistent with the actual engineering practice where the floor slab has a constrained boundary except for the side adjacent to an edge or opening, which is a free boundary. This design more realistically simulates the stress state of the floor slab in the building structure.

[0012] In some embodiments, the lateral limit frame includes multiple lateral support components, connecting beams, cross braces and sliding parts. The connecting beam is provided with a sliding part that can be slidably connected to the side wall of the floor slab on the side facing the floor slab, and the connecting beam is connected to the top side wall of the lateral support component on the side facing away from the floor slab. The lateral support components are distributed at axial intervals along the connecting beam, and cross braces arranged in a cross shape are provided between adjacent lateral support components. The lateral limit frames located on both sides of the floor slab are arranged symmetrically.

[0013] In some embodiments, the lateral support assembly includes a column, a column base and a diagonal brace, wherein either end of the column base is vertically connected to the column, and the other end of the column base is connected to the end of the column away from the column base via the diagonal brace.

[0014] In some embodiments, the column and the connecting beam are connected via a first connecting member, the sliding member is provided on the first connecting member, the column and the cross brace are connected via a second connecting member, the column and the diagonal brace are connected via a third connecting member, and the column base and the diagonal brace are connected via a fourth connecting member.

[0015] In some embodiments, the top limit frame includes a loading beam, a first connecting head, a second connecting head and a third connecting head. The first connecting head is provided at one end of the loading beam, and the second connecting head is provided at the other end of the loading beam. The third connecting head is provided at either end of the top of the floor frame specimen. The first connecting head corresponds to the third connecting head and is connected by connecting bolts. The second connecting head is connected to the end side wall of the floor frame specimen away from the third connecting head, so that the loading beam corresponds to the top of the floor.

[0016] In some embodiments, the floor frame specimen adopts a herringbone brace frame, which includes a floor support assembly, a support beam, a support column and a herringbone brace. The floor is connected to the support beam via the floor support assembly, and both ends of the support beam are connected to the support columns. The bottom of the support column is correspondingly connected to the bottom support frame. A group of herringbone braces are symmetrically arranged between the support beam and the support column. One end of the herringbone brace is connected to the middle and bottom of the support beam, and the other end of the herringbone brace is connected to the connection between the support column and the bottom support frame.

[0017] In some embodiments, the floor support assembly includes a first support member, a second support member and a shear connector. The first support members are symmetrically connected to both sides of the support beam. Multiple first support members are arranged at intervals along the axial direction of the support beam. The ends of adjacent first support members away from the support beam are connected via a second support member. The second support member can constrain the side walls of the floor. The floor is connected to the top of the support beam via a shear connector.

[0018] In some embodiments, the bottom support frame includes a loading base, and the bottom of the support column is correspondingly connected to the loading base.

[0019] Another technical solution adopted by the present invention is: a test method for a pseudo-static test device with a floor frame structure:

[0020] S1. Specimen preparation: obtain a completed floor frame specimen and spray speckle on the mid-span part of the support beam and the herringbone of the floor frame specimen;

[0021] S2. Install the test specimen. First, hoist one lateral limit frame into place. Then hoist the floor frame test specimen into place and contact it with the sliding part of the lateral limit frame. Then, fix the top limit frame and the floor frame test specimen with bolts. Finally, hoist the other lateral limit frame into place in the same way. Make sure that the lateral limit frames are symmetrically arranged on both sides of the floor frame test specimen.

[0022] S3. Test loading: fix the horizontal actuator of the quasi-static test device to the second connector of the top limit frame, and apply horizontal reciprocating tensile and compressive loads to the floor frame specimen according to the loading plan.

[0023] The beneficial effects of the present invention are:

[0024] 1. Through the combined action of the bottom support frame and the top limit frame, the stability of the floor frame specimen during the entire loading process is ensured, the reliability and accuracy of the test data are improved, and the reliability of the test results is enhanced, which is crucial for evaluating aspects such as structural stiffness, bearing capacity, and seismic performance. This application forms boundary constraints on the floor slab by setting lateral limit frames on both sides of the floor slab. This is consistent with the situation in actual engineering where, except for one side of the floor slab adjacent to an edge or a hole, the floor slab is a constrained boundary in other cases. By accurately simulating the actual boundary conditions, the test environment is closer to the actual situation, and the stress state of the floor slab in the building structure can be more realistically simulated.

[0025] 2. This application can adapt to the deformation requirements during the loading process. Through the design of sliding contact between the top side wall of the lateral limit frame and the corresponding side wall of the floor slab, the floor slab can slide relatively along the loading direction during the loading process, which not only provides the necessary constraints but also allows a certain amount of deformation, which helps to more accurately study the collaborative working performance between the floor slab and the frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of this application.

[0027] Figure 2 yes Figure 1 Schematic diagram of the structure without lateral limit frame.

[0028] Figure 3 yes Figure 2 Schematic diagram of the front view structure.

[0029] Figure 4 yes Figure 3 Cross-section along AA.

[0030] Figure 5 yes Figure 3 Cross-section along the middle BB.

[0031] Figure 6 yes Figure 3 Cross-section along CC.

[0032] Figure 7 yes Figure 3 Cross-section along DD.

[0033] Figure 8 yes Figure 3 Cross-section along EE.

[0034] Figure 9 yes Figure 3 Cross-section along the middle edge of FF.

[0035] Figure 10 yes Figure 3Cross-section along the middle of GG.

[0036] Figure 11 yes Figure 2 Schematic diagram of the structure without the top limit frame.

[0037] Figure 12 yes Figure 11 Schematic diagram of the top view structure.

[0038] Figure 13 yes Figure 12 Cross-section along AA.

[0039] Figure 14 yes Figure 12 Cross-section along the middle BB.

[0040] Figure 15 yes Figure 12 Cross-section along CC.

[0041] Figure 16 It is a structural diagram of the lateral limit frame.

[0042] Figure 17 yes Figure 16 Schematic diagram of the front view structure.

[0043] Figure 18 yes Figure 16 Schematic diagram of the side structure.

[0044] Figure 19 yes Figure 17 Cross-section along AA.

[0045] Figure 20 yes Figure 17 Cross-section along the middle BB.

[0046] Figure 21 yes Figure 17 Cross-section of the middle edge CC

[0047] Figure 22 yes Figure 21 Cross-section along DD.

[0048] Description of reference numerals:

[0049] 1. Floor frame specimen; 2. Lateral limit frame; 3. Top limit frame; 4. Bottom support frame; 11. Support column; 12. Support beam; 13. First support member; 14. Second support member; 15. Floor; 16. Herringbone brace; 17. Third connector; 21. Column; 22. Column base; 23. Diagonal brace; 24. Cross brace; 25. Connecting beam; 26. Sliding member; 31. Loading beam; 32. First connector; 33. Second connector; 51. Connecting bolt; 211. First connector; 212. Second connector; 213. Third connector; 214. Fourth connector; 151. Shear connector.

[0050] This specification includes references to "one embodiment" or "an embodiment." The appearance of the phrase "in one embodiment" or "in an embodiment" does not necessarily refer to the same embodiment. The particular features, structures, or characteristics may be combined in any suitable manner consistent with the present disclosure.

[0051] The term "comprising" is open ended. As used in the appended claims, the term does not exclude additional structures or steps.

[0052] “First,” “second,” etc. As used herein, these terms act as labels for the nouns that precede them and do not imply any type of ordering (e.g., spatial, temporal, logical, etc.). DETAILED DESCRIPTION

[0053] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the technical solutions of the present invention are further described below with reference to specific embodiments.

[0054] Example 1:

[0055] Combine Figures 1 to 11 As shown, this embodiment is a pseudo-static test apparatus with a floor frame structure, comprising a floor frame specimen 1, a bottom support frame 4, a top limit frame 3, and a lateral limit frame 2. A horizontally arranged floor 15 is provided within the floor frame specimen 1. The bottom support frame 4 is provided at the bottom of the floor frame specimen 1, and is used to secure the floor frame specimen 1 to the ground. A top limit frame 3 is provided at the top of the floor frame specimen 1, with its ends correspondingly connected to the ends of the floor frame specimen 1. The top limit frame 3 is used to bear the load applied by the actuator. Lateral limit frames 2 are symmetrically provided on both sides of the floor frame specimen 1. The top side walls of the lateral limit frames 2 slide against the corresponding side walls of the floor 15. The lateral limit frames 2 are used to limit the two sides of the floor 15 to form boundary constraints, and the lateral limit frames 2 can enable the floor 15 to slide relatively in the home direction during loading, which not only provides necessary constraints but also allows a certain degree of deformation, and more realistically simulates the behavior of the floor 15 in actual buildings.

[0056] In some embodiments, as Figure 2 、 Figure 3 and Figure 4 The floor frame specimen 1 uses a herringbone frame, which includes a floor support assembly, support beams 12, support columns 11, and herringbone braces 16. The floor 15 is connected to the support beams 12 via the floor support assembly. Both ends of the support beams 12 are connected to support columns 11, and the bottoms of the support columns 11 are correspondingly connected to the bottom support frame 4. A set of herringbone braces 16 are symmetrically arranged between the support beams 12 and support columns 11. One end of the herringbone brace 16 is connected to the middle and bottom of the support beam 12, and the other end is connected to the connection between the support column 11 and the bottom support frame 4.

[0057] Further, such as Figure 5 、 Figure 6 and Figure 7 As shown, the floor support assembly includes a first support member 13, a second support member 14, and a shear connector 151. The first support members 13 are symmetrically connected to both sides of the support beam 12. Multiple first support members 13 are spaced apart along the axial direction of the support beam 12. The ends of the first support members 13 on the same side, away from the support beam 12, are connected via a second support member 14. The second support member 14 can constrain the side walls of the floor slab 15. The floor slab 15 is connected to the top of the support beam 12 via the shear connector 151. Specifically, in this embodiment, the first support member 13 is made of I- or H-section steel, and the second support member 14 is made of angle steel. In this embodiment, the shear connector 151 is made of studs, which are spaced apart along the axial direction of the support beam 12 to secure the floor slab 15 to the support beam 12. In addition to studs, the shear connector 151 can also be made of section steel, bolts, etc. The first support members 13 and the second support members 14 form a stable force-bearing system, providing reliable out-of-plane restraint for the floor slab 15.

[0058] In some embodiments, as Figure 2 and Figure 3 As shown, the bottom support frame 4 includes a loading base, which is connected to the bottom of the support column 11 and fixed to the ground via connecting bolts 51. The loading base can be used to fix the floor frame specimen 1 to the floor of the laboratory during the pseudo-static test to provide a constraint for the floor frame specimen 1.

[0059] In some embodiments, as Figure 2 and Figure 3As shown, the top limit frame 3 includes a loading beam 31, a first connector 32, a second connector 33, and a third connector 17. The first connector 32 is provided at one end of the loading beam 31, and the second connector 33 is provided at the other end of the loading beam 31. A third connector 17 is provided at either end of the support beam 12 in the floor frame specimen 1. The third connector 17 at least partially extends to connect with the side wall of the support column 11. The first connector 32 corresponds to the third connector 17 and is connected via a connecting bolt 51. The second connector 33 is connected to the end side wall of the support beam 12 in the floor frame specimen 1 away from the third connector 17, so that the loading beam 31 corresponds to the top of the floor 15. The loading beam 31 can be fixed to the actuator to bear the load of the actuator, and the stable connection between the floor frame specimen 1 and the loading beam 31 can ensure the effective transfer of the load. Specifically, in this embodiment, the second connector 33 is connected and cooperated with the loading beam 31 to form an L-shaped structure, and the third connector 17 is connected and cooperated with the support beam 12 to form an L-shaped structure.

[0060] Since most current pseudo-static loading devices typically have only one horizontal actuator and are not completely symmetrical, this factor was also taken into consideration during specimen design. In this embodiment, a second connector 33 is used to connect to the horizontal actuator that applies the load, and the horizontal load is transferred to the other side via the loading beam 31. This other side requires a relatively strong structure to ensure reliable force bearing. Therefore, a third connector 17 is designed to be integrally connected to the floor frame specimen 1. This third connector 17 is taller than the second connector 33, increasing the connection area between the support column 11 and the loading beam 31 to facilitate the placement of more bolts, thereby carrying larger horizontal reciprocating loads and preventing premature shear failure of the column web.

[0061] In some embodiments, as Figure 8 、 Figure 9 、 Figure 10 、 Figure 11 As shown, the lateral limit frame 2 includes multiple lateral support components, connecting beams 25, cross braces 24 and sliding members 26. The connecting beam 25 is provided with a sliding member 26 that can be slidably connected to the side wall of the floor 15 on the side facing the floor 15. The connecting beam 25 is connected to the top side wall of the lateral support component on the side facing away from the floor 15. The lateral support components are distributed at intervals along the axial direction of the connecting beam 25. Cross braces 24 arranged in a cross shape are provided between adjacent lateral support components. The lateral limit frames 2 located on both sides of the floor 15 are arranged symmetrically.

[0062] Furthermore, the lateral support assembly includes a column 21, a column base 22 and a diagonal brace 23. Either end of the column base 22 is vertically connected to the column 21, and the other end of the column base 22 is connected to the end of the column 21 away from the column base 22 via the diagonal brace 23.

[0063] Furthermore, the connecting beams 25 are all connected to the top side walls of the columns 21, and the cross braces 24 are arranged in a cross shape between adjacent columns 21. Specifically, the columns 21 and the connecting beams 25 are connected via a first connecting member 211, which is provided with a sliding member 26. The columns 21 and the cross braces 24 are connected via a second connecting member 212, the columns 21 and the diagonal braces 23 are connected via a third connecting member 213, and the column bases 22 and the diagonal braces 23 are connected via a fourth connecting member 214.

[0064] Furthermore, in this embodiment, the sliding member 26 is a track pulley, and the track pulley is fixed to the first connecting member 211 via a connecting bolt 51 .

[0065] By placing lateral support assemblies on both sides of the floor slab, constraints are provided in the non-loading direction within the floor plane. Track pulleys are used to ensure smooth sliding along the loading direction during loading. Providing out-of-plane constraints prevents unexpected deformation or instability of the specimen during loading. Because frame structures may experience out-of-plane buckling or twisting under horizontal loads, appropriate constraints can effectively limit this occurrence, ensuring that the test proceeds according to the predetermined design while more accurately simulating the actual working conditions of the structure.

[0066] The implementation principle of a pseudo-static test device with a floor frame structure is as follows:

[0067] In terms of simulating actual boundary conditions, by installing lateral limiters 2 on both sides of floor slab 15, a constraint boundary is formed for floor slab 15, accurately simulating the boundary conditions of floor slab 15 in actual engineering. This solves the problem of simplifying the boundary conditions of floor slab 15 in traditional pseudo-static tests and makes the test environment more realistic. Based on test results that are closer to actual conditions, researchers can more accurately assess the impact of structural stiffness, load-bearing capacity, and seismic performance, thereby providing solid data support for optimizing structural design and improving the seismic safety of the project.

[0068] The structure of the floor frame specimen 1 was enhanced by the use of a herringbone frame, increasing its overall stability and load-bearing capacity, further strengthening the stability of the test apparatus. This provided constraints in the non-loading direction within the plane of the floor slab 15, and the use of track pulleys to ensure smooth sliding in the loading direction during loading. Furthermore, the use of sliding members 26 allowed the floor slab 15 to deform appropriately based on the loading conditions, providing both necessary constraints and adapting to varying load requirements. This flexibility facilitated further study of the collaborative performance between the floor slab 15 and the frame.

[0069] Example 2:

[0070] This embodiment is a test method for a pseudo-static test device with a floor frame structure, which is applied to the pseudo-static test device with a floor frame structure described in Example 1, and includes the following steps:

[0071] S1. Specimen preparation: A fabricated floor frame specimen 1 is obtained. Speckle patterns are sprayed on key locations of interest, such as the mid-span portion of the support beam 12 and the herringbone brace 16 of the floor frame specimen 1, to facilitate accurate recording of the specimen's strain and deformation using DIC technology during the test loading process.

[0072] S2. Specimen installation: first hoist a lateral limit frame 2 into place, then hoist the floor frame specimen 1 into place and contact it with the sliding member 26 of the lateral limit frame 2, then fix the top limit frame 3 to the floor frame specimen 1 with bolts, and finally hoist the other lateral limit frame 2 into place, so that the lateral limit frames 2 are symmetrically arranged on both sides of the floor frame specimen 1.

[0073] S3, test loading, fixing the horizontal actuator of the quasi-static test device to the second connector 33 of the top limit frame 3, and applying horizontal reciprocating tensile and compressive loads to the floor frame specimen 1 according to the loading plan.

[0074] The above are all preferred embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A pseudo-static test device with a floor frame structure, characterized in that: include: A floor frame specimen (1) having a horizontally arranged floor slab (15) therein; A bottom support frame (4) is provided at the bottom of the floor frame specimen (1) and is used to fix the floor frame specimen (1) on the ground; A top limit frame (3) is provided on the top of the floor frame specimen (1), and two ends of the top limit frame (3) are correspondingly connected to two ends of the floor frame specimen (1) for bearing the load applied by the actuator; The lateral limiting frames (2) are symmetrically arranged on both sides of the floor frame specimen (1), and the top side walls of the lateral limiting frames (2) slide against the corresponding side walls of the floor (15) to limit the two sides of the floor (15) to form boundary constraints, and enable the floor (15) to slide relatively along the loading direction during loading.

2. A pseudo-static test device with a floor frame structure according to claim 1, characterized in that: The lateral limit frame (2) includes a plurality of lateral support components, a connecting beam (25), a cross brace (24) and a sliding member (26). The connecting beam (25) is provided with a sliding member (26) on the side facing the floor slab (15) and capable of being slidably connected to the side wall of the floor slab (15). The connecting beam (25) is connected to the top side wall of the lateral support component on the side facing away from the floor slab (15). The lateral support components are distributed at intervals along the axial direction of the connecting beam (25). Cross braces (24) arranged in a cross shape are provided between adjacent lateral support components. The lateral limit frames (2) located on both sides of the floor slab (15) are symmetrically arranged.

3. The pseudo-static test device with a floor frame structure according to claim 2, characterized in that: The lateral support assembly comprises a column (21), a column base (22) and an oblique brace (23), wherein either end of the column base (22) is vertically connected to the column (21), and the other end of the column base (22) is connected to the end of the column (21) away from the column base (22) via the oblique brace (23).

4. The pseudo-static test device with a floor frame structure according to claim 3, characterized in that: The column (21) and the connecting beam (25) are connected via a first connecting member (211), the first connecting member (211) is provided with the sliding member (26), the column (21) and the cross brace (24) are connected via a second connecting member (212), the column (21) and the diagonal brace (23) are connected via a third connecting member (213), and the column base (22) and the diagonal brace (23) are connected via a fourth connecting member (214).

5. The pseudo-static test device with a floor frame structure according to claim 1, characterized in that: The top limit frame (3) comprises a loading beam (31), a first connecting head (32), a second connecting head (33) and a third connecting head (17); one end of the loading beam (31) is provided with the first connecting head (32); the other end of the loading beam (31) is provided with the second connecting head (33); either end of the top of the floor frame specimen (1) is provided with the third connecting head (17); the first connecting head (32) corresponds to the third connecting head (17) and is connected via a connecting bolt (51); the second connecting head (33) is connected to the end side wall of the floor frame specimen (1) away from the third connecting head (17), so that the loading beam (31) corresponds to the top of the floor slab (15).

6. The pseudo-static test device with a floor frame structure according to claim 1, characterized in that: The floor frame specimen (1) adopts a herringbone bracing frame, which includes a floor support assembly, a support beam (12), a support column (11) and a herringbone brace (16); the floor (15) is connected to the support beam (12) via the floor support assembly; both ends of the support beam (12) are connected to the support column (11); the bottom of the support column (11) is correspondingly connected to the bottom support frame (4); a group of herringbone braces (16) are symmetrically arranged between the support beam (12) and the support column (11); one end of the herringbone brace (16) is connected to the middle bottom of the support beam (12); and the other end of the herringbone brace (16) is connected to the connection between the support column (11) and the bottom support frame (4).

7. The pseudo-static test device with a floor frame structure according to claim 6, characterized in that: The floor support assembly comprises a first support member (13), a second support member (14) and a shear connector (151); the first support members (13) are symmetrically connected to both sides of the support beam (12); a plurality of first support members (13) are arranged at intervals along the axial direction of the support beam (12); the ends of adjacent first support members (13) away from the support beam (12) are connected via the second support member (14); the second support member (14) can constrain the side wall of the floor (15); and the floor (15) is connected to the top of the support beam (12) via the shear connector (151).

8. The pseudo-static test device with a floor frame structure according to claim 6, characterized in that: The bottom support frame (4) comprises a loading base, and the bottom of the support column (11) is correspondingly connected to the loading base.

9. The test method of the pseudo-static test device with floor frame structure according to any one of claims 1 to 8: S1. Specimen preparation: obtaining a fabricated floor frame specimen (1), spraying speckle patterns on the mid-span portion of the support beam (12) and the herringbone brace (16) of the floor frame specimen (1); S2. Install the test piece. First, hoist one lateral limit frame (2) into place. Then, hoist the floor frame test piece (1) into place and make it contact with the sliding member (26) of the lateral limit frame (2). Then, fix the top limit frame (3) and the floor frame test piece (1) with bolts. Finally, hoist the other lateral limit frame (2) into place in the same manner. Then, arrange the lateral limit frames (2) symmetrically on both sides of the floor frame test piece (1). S3, test loading, fixing the horizontal actuator of the quasi-static test device to the second connector (33) of the top limit frame (3), and applying horizontal reciprocating tensile and compressive loads to the floor frame specimen (1) according to the loading scheme.

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