A shear wall quasi-static test device and test method

Abstract

The present application provides a kind of shear wall pseudo-static test device and test method, it is related to pseudo-static test technical field;The device of the present application includes support column, loading beam, guide beam, counter-force frame, magnetic force component, counter-force beam, vertical actuator, horizontal actuator, connecting beam, shear wall to be measured, magnetic force plate and force transmission frame and other components, these components are connected in a specific way.The present application is simple in structure, and test operation is convenient, magnetic plate is installed on loading beam and test device, the principle of repulsion of like poles of magnet is used, no friction can be ensured between shear wall and pseudo-static test device without contact, so as to ensure the accuracy of shear wall pseudo-static test.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of quasi-static test, in particular to a shear wall quasi-static test device. BACKGROUND

[0002] Quasi-static test is a test for understanding the stress performance and bearing capacity of components (such as walls, beams and columns, etc.), such as wall seismic test. In the existing quasi-static test, the load needs to be applied from top to bottom to the component, so the component needs to be moved to the bottom of the quasi-static test device for applying load first, and then the component is hoisted up, and the load is applied by the quasi-static test device to carry out the quasi-static test.

[0003] However, in the process of doing shear wall quasi-static test, a face-out support device needs to be added outside the component (shear wall) to prevent the component from tilting outward. In the traditional way, a roller is added outside the support device to convert the sliding friction between the component and the support device into rolling friction, so that the component can move freely. However, in the actual test process, friction still occurs between the component and the support device, which affects the accuracy of the test data. SUMMARY

[0004] In view of the above problems in the prior art, the purpose of the present application is to solve the problem of low test accuracy caused by friction between the shear wall and the quasi-static test device during the quasi-static test of the shear wall, and to provide a shear wall quasi-static test device and test method, which can ensure that no friction occurs between the shear wall and the quasi-static test device, thereby ensuring the accuracy of the shear wall quasi-static test.

[0005] To solve the above technical problems, the technical scheme adopted by the present application is as follows: a shear wall quasi-static test device, comprising a support frame, a counterforce frame and an actuator, and further comprising a shear wall to be tested; the support frame comprises support columns, a loading beam and a guide beam; the support columns are four, and the four support columns are distributed in a rectangular shape; the loading beam is located inside the support frame and is fixedly connected with the upper ends of the four support columns; the guide beam is two, and is located below the loading beam; the two guide beams are located at the same horizontal height and are fixedly connected with the inner sides of the two support columns on the same side of the support frame, and the two guide beams have a spacing therebetween; on the side of the two guide beams facing each other, a magnetic component is arranged along the length direction thereof; the counterforce frame is located at one end of the rectangular shape formed by the support columns;

[0006] The actuator includes a horizontal actuator and a vertical actuator; the vertical actuator is fixedly connected with the loading beam and is opposite to the space between the two guide beams, the actuating end of the vertical actuator is arranged downward and can extend into the space between the two guide beams for vertically fixing the shear wall to be tested; the horizontal actuator is horizontally installed on the side of the counterforce frame close to the support frame and is opposite to the space between the two guide beams, the actuating end of the horizontal actuator is directed toward the support frame and can extend into the space between the two guide beams for applying load to the shear wall to be tested.

[0007] The two side surfaces of the shear wall to be tested correspond to the positions of the magnetic force members, and the magnetic force plates are installed in the horizontal direction; and the polarity of the magnetic force plates is the same as that of the corresponding magnetic force members, so that the shear wall to be tested and the shear wall quasi-static test device have no friction force generated when the shear wall to be tested moves between the two guide beams according to the principle of same polarity repelling each other.

[0008] In the foregoing shear wall quasi-static test device, the magnetic force members are permanent magnets or electromagnets.

[0009] In the foregoing shear wall quasi-static test device, the counterforce frame includes two additional support columns, and the counterforce beam is arranged between the two support columns; the horizontal actuator is fixedly connected with the counterforce beam.

[0010] In the foregoing shear wall quasi-static test device, the two ends of the counterforce beam are connected with the support columns through sliding fit of guide rails and can move vertically, and the locking device is arranged between the counterforce beam and the support columns.

[0011] In the foregoing shear wall quasi-static test device, the loading beam is connected with the support frame through the connecting beam; and the two ends of the connecting beam are respectively connected with the two support columns at the same end of the support frame.

[0012] In the foregoing shear wall quasi-static test device, the support blocks are arranged on the inner sides of the two support columns at the same side of the support frame and correspond to the lower part of the guide beam, and the support blocks are fixedly connected with the support columns; and the guide beam is arranged above the support blocks and is fixedly connected with the support blocks.

[0013] In the foregoing shear wall quasi-static test device, the support columns, the loading beam, the guide beam and the counterforce frame are all made of steel structure.

[0014] A shear wall quasi-static test method using the foregoing shear wall quasi-static test device, including the following steps:

[0015] 1) Magnetic force plates are installed in the horizontal direction at the positions corresponding to the magnetic force members on the two side surfaces of the shear wall to be tested; and the polarity of the magnetic force plates is the same as that of the magnetic force members on the corresponding guide beam;

[0016] 2) push the shear wall to be tested to between two guide beams by a pushing mechanism, and fix the shear wall to be tested to the ground;

[0017] 3) fix a force transmission frame to the upper side of the shear wall to be tested, control the actuating end of the vertical actuator to extend downward and abut against the force transmission frame, and apply pressure to the shear wall to be tested through the force transmission frame to press the shear wall to the ground;

[0018] 4) control the actuating end of the horizontal actuator to extend and contact the shear wall to be tested, and continuously control the horizontal actuator to apply a pushing force to the shear wall to be tested; collect the horizontal displacement of the shear wall to be tested and the pushing force applied by the horizontal actuator in real time until the shear wall to be tested is destroyed, the destruction degree is 15% of the peak load, and the pseudo-static test of the shear wall to be tested is completed.

[0019] In the pseudo-static test method of the shear wall, the actuating end of the horizontal actuator contacts the upper part of the shear wall to be tested.

[0020] The pseudo-static test device of the shear wall provided by the application has at least the following beneficial effects compared with the prior art:

[0021] The pseudo-static test device of the shear wall provided by the application has at least the following beneficial effects compared with the prior art:

[0022] The pseudo-static test device of the shear wall provided by the application has at least the following beneficial effects compared with the prior art:

[0023] The device is a non-contact out-of-plane support, and the distance between the two sides is large, so that most sizes of shear walls can be accommodated without adjusting the position, and the device has universality.

[0024] The components of the device are all connected by high-strength bolts, so that the device has high strength and is easy and feasible to operate in construction and installation. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a structural schematic view of a pseudo-static test device of a shear wall;

[0026] In the drawings, the marks are as follows: 1 - support column, 2 - loading beam, 3 - guide beam, 4 - counterforce frame, 5 - magnetic component, 6 - counterforce beam, 7 - vertical actuator, 8 - horizontal actuator, 9 - connecting beam, 10 - shear wall to be tested, 11 - magnetic plate, 12 - force transmission frame. DETAILED DESCRIPTION

[0027] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the protection scope of the present application.

[0028] In an embodiment, a shear wall pseudo-static test device is provided, which has the structure as shown in Figure 1 The support frame includes support columns 1, a loading beam 2 and a guide beam 3. The four support columns 1 are distributed at intervals in a rectangular shape. The loading beam 2 is located inside the support frame, and its length direction is consistent with the length direction of the support frame, and is fixedly connected with the upper ends of the four support columns. In the implementation process, the loading beam 2 is connected with the support frame through a connecting beam 9, wherein the two ends of the connecting beam 9 are connected with the two support columns 1 at the same end of the support frame.

[0029] The guide beam 3 is two, and is located below the loading beam 2, and its length direction is consistent with the length direction of the loading beam 2. The two guide beams 3 are located at the same horizontal height, and are respectively fixedly connected with the inner sides of the two support columns 1 at the same side of the support frame, and have a spacing between the two guide beams 3. In the implementation, a support block is provided below the guide beam 3 on the inner side of the two support columns 1 at the same side of the support frame, and the support block is fixedly connected with the support columns 1. The guide beam 3 is located above the support block and is fixedly connected with the support block. On the side of the two guide beams 3 facing each other, a magnetic force component 5 is provided along the length direction thereof. The magnetic force component 5 is a permanent magnet or an electromagnet. According to the need, a permanent magnet of the required polarity is installed, or the electromagnet is powered to generate a magnetic field.

[0030] The shear wall pseudo-static test device is matched with a magnetic plate 11 installed along the horizontal direction at the position corresponding to the magnetic force component 5 on the two sides of the shear wall 10 to be tested. The polarity of the magnetic plate 11 is the same as that of the corresponding magnetic force component 5, so that the shear wall 10 to be tested and the shear wall pseudo-static test device do not generate frictional force when the shear wall 10 to be tested moves between the two guide beams 3 according to the principle of same polarity repelling each other.

[0031] The reaction frame 4 is located at one end of the support frame. The reaction frame 4 also includes two support columns 1, and a reaction beam 6 is installed on the side of the two support columns 1 connected with the horizontal actuator 8, and the horizontal actuator 8 is fixedly connected with the reaction beam 6.

[0032] The actuator includes a horizontal actuator 8 and a vertical actuator 7.

[0033] The vertical actuator 7 is fixedly connected with the loading beam 2, and the spacing between the vertical actuator 7 and the two guide beams 3 is opposite, the actuating end of the vertical actuator 7 is arranged downward, and can extend into the spacing between the two guide beams 3, for vertically fixing the shear wall 10 to be tested.

[0034] The horizontal actuator 8 is horizontally installed on the side of the counterforce frame 4 close to the support frame, and is opposite to the spacing between the two guide beams 3, the actuating end of the horizontal actuator 8 is directed to the direction of the support frame, and can extend into the spacing between the two guide beams 3, for applying load to the shear wall 10 to be tested.

[0035] In the scheme, the support column 1, the loading beam 2, the guide beam 3 and the counterforce frame 4 are all steel structures; in this way, the local connection can be achieved by welding, the overall stability is better, and the construction and assembly are more convenient; and the installation between the components is all preferably achieved by high-strength bolt connection, which is high in strength and simple and feasible in construction and installation operation.

[0036] The shear wall pseudo-static test device is used for the pseudo-static test method of the shear wall to be tested, and the specific steps are as follows:

[0037] 1) The magnetic plates 11 are installed on the positions corresponding to the magnetic members 5 on the two side surfaces of the shear wall 10 to be tested in the horizontal direction, wherein the polarity of the magnetic plates 11 is the same as that of the magnetic members 5 on the corresponding guide beams 3.

[0038] 2) The shear wall 10 to be tested is pushed to the spacing between the two guide beams 3 by the pushing mechanism, and the shear wall 10 to be tested is fixed to the ground.

[0039] 3) A force transmission frame 12 is fixed on the upper side of the shear wall 10 to be tested, the actuating end of the vertical actuator 7 is controlled to extend downward and abut against the force transmission frame 12, the shear wall 10 to be tested is pressed on the ground by the force transmission frame 12.

[0040] 4) The actuating end of the horizontal actuator 8 is controlled to extend and contact the shear wall 10 to be tested, and in the actual test, the actuating end of the horizontal actuator 8 contacts the upper part of the shear wall 10 to be tested. The horizontal actuator 8 is continuously controlled to apply a pushing force to the shear wall 10 to be tested; the horizontal displacement of the shear wall 10 to be tested and the pushing force applied by the horizontal actuator 8 are collected in real time, until the shear wall 10 to be tested is damaged (the damage can be 15% of the peak load of the shear wall 10 to be tested), and the pseudo-static test of the shear wall 10 to be tested is completed.

[0041] In another embodiment, the device of embodiment 1 is further provided with a locking device between the counter-force beam 6 and the supporting column 1, so that the position of the horizontal actuator 8 can be adjusted according to the height of the shear wall 10 to be tested, thus making the device more adaptable.

[0042] It is obvious that the contents not described in detail in the specification are all the prior art known to those skilled in the art.

Claims

1. A shearing wall quasi-static test device, comprising a support frame, a counter-force frame (4) and an actuator, and further comprising a shearing wall (10) to be tested, characterized in that: The support frame comprises support columns (1), a loading beam (2) and guide beams (3); the support columns (1) are four in number and are distributed in a rectangular shape; the loading beam (2) is located at the inner side of the support frame and is fixedly connected with the upper ends of the four support columns (1); the guide beams (3) are two in number and are located below the loading beam (2); the two guide beams (3) are located at the same horizontal height and are fixedly connected with the inner sides of the two support columns (1) on the same side of the support frame, and the two guide beams (3) have a spacing therebetween; a magnetic force component (5) is arranged on the side of the two guide beams (3) facing each other along the length direction thereof; the counterforce frame (4) is located at one end of the rectangular shape of the support columns (1); The actuator comprises horizontal actuators (8) and vertical actuators (7); the vertical actuators (7) are fixedly connected with the loading beam (2) and face the spacing between the two guide beams (3), and the actuating end of the vertical actuators (7) is arranged downward and can extend into the spacing between the two guide beams (3) for vertically fixing the shear wall (10) to be tested; the horizontal actuators (8) are horizontally installed on the side of the counterforce frame (4) close to the support frame and face the spacing between the two guide beams (3), and the actuating end of the horizontal actuators (8) faces the direction of the support frame and can extend into the spacing between the two guide beams (3) for applying load to the shear wall (10) to be tested; Magnetic plates (11) are installed on the two side surfaces of the shear wall (10) to be tested corresponding to the positions of the magnetic force components (5) along the horizontal direction, and the polarity of the magnetic plates (11) is the same as that of the corresponding magnetic force components (5); according to the principle of same polarity repelling each other, the shear wall (10) to be tested is not in contact with the shear wall quasi-static test device when moving between the two guide beams (3), so that no friction force is generated.

2. The quasi-static test device for shear walls of claim 1, wherein: The magnetic force component (5) is a permanent magnet or an electromagnet.

3. The quasi-static test device for shear walls of claim 1, wherein: The counterforce frame (4) comprises two additional support columns (1), and a counterforce beam (6) is arranged between the two support columns (1); the horizontal actuators (8) are fixedly connected with the counterforce beam (6).

4. The quasi-static test apparatus for shear walls of claim 3, wherein: The two ends of the counterforce beam (6) are connected with the support columns (1) in a sliding fit through guide rails and can move vertically, and a locking device is arranged between the counterforce beam (6) and the support columns (1).

5. The quasi-static test apparatus for shear walls of claim 1, wherein: The loading beam (2) is connected with the support frame through a connecting beam (9); the two ends of the connecting beam (9) are connected with the two support columns (1) at the same end of the support frame.

6. The quasi-static test apparatus for shear walls of claim 1, wherein: Support blocks are arranged on the inner sides of the two support columns (1) on the same side of the support frame corresponding to the positions below the guide beams (3), and the support blocks are fixedly connected with the support columns (1); the guide beams (3) are located above the support blocks and are fixedly connected with the support blocks.

7. The quasi-static test apparatus for shear walls of claim 1, wherein: The support columns (1), the loading beam (2), the guide beams (3) and the counterforce frame (4) are all made of steel structure.

8. A method of quasi-static test of a shear wall, characterized by: The shear wall quasi-static test device is used as claimed in any one of claims 1-7, and comprises the following steps: 1) Install magnetic plates (11) on both sides of the shear wall (10) to be tested at the positions corresponding to the magnetic force members (5), in the horizontal direction; and the polarity of the magnetic plates (11) is the same as that of the magnetic force members (5) on the corresponding guide beams (3); 2) Push the shear wall (10) to be tested between the two guide beams (3) through the pushing mechanism, and fix the shear wall (10) to be tested to the ground; 3) Fix a force transmission frame (12) on the upper side of the shear wall (10) to be tested, control the actuating end of the vertical actuator (7) to extend downward and abut against the force transmission frame (12), and apply pressure to the shear wall (10) to be tested through the force transmission frame (12) to press the shear wall (10) to be tested tightly to the ground; 4) Control the actuating end of the horizontal actuator (8) to extend and contact the shear wall (10) to be tested, and then continuously control the horizontal actuator (8) to apply a pushing force to the shear wall (10) to be tested; real-time collection of the horizontal displacement of the shear wall (10) to be tested and the pushing force applied by the horizontal actuator (8) is performed until the shear wall (10) to be tested is destroyed, and the quasi-static test of the shear wall (10) to be tested is completed.

9. The quasi-static test method of a shear wall according to claim 8, wherein: The actuating end of the horizontal actuator (8) contacts the upper part of the shear wall (10) to be tested.

10. The quasi-static test method of a shear wall according to claim 8, wherein: In step 4), until the shear wall (10) to be tested is destroyed, the peak load of the shear wall (10) to be tested decreases by at least 15%.

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