Vibration test bench construction method

Abstract

The invention provides a construction method of a vibration test bench, which comprises the following steps: arranging a fixed support area and an adjustable support area below the vibration test bench, arranging a plurality of vibration isolators in the fixed support area, arranging a plurality of jacks in the adjustable support area, and calculating the flexible deformation of the vibration test bench during layered pouring of each layer of concrete according to the parameters of the concrete of the vibration test bench; the jack is adjusted to be higher than the top end of the stand column by a certain height, and the height parameter is reverse flexible deformation; a film layer and a vertical side mold are fixedly arranged on the cross beam frame; arranging embedded parts, pouring concrete of the vibration test bed in a layered manner, and vibrating; dismantling the cross beam frame and the stand column of the fixed supporting area; synchronously falling the jack to enable the vibration test bed to fall on the top of the vibration isolator; construction of the vibration test bench is achieved through the steps. According to the construction method, the construction problem of the suspended mass concrete is solved. And a pre-jacking deflection compensation scheme is adopted, so that the technical problem that the concrete deforms when the mass concrete is in an edge supporting state is solved.

Description

Technical Field

[0001] This invention relates to the field of large-volume suspended concrete construction, and in particular to a vibration test bench construction method. Background Technology

[0002] Some high-end equipment requires vibration testing for verification. Currently, the most commonly used technology is a vibration test bench with a fixed foundation, such as those described in CN114439034A and CN114892707A. However, during long-term use, vibration test benches with fixed foundations are prone to causing soil stress to exceed their ultimate shear strength due to large impact loads, leading to the soil entering a plastic stage. Soil in the plastic stage is prone to significant deformation under long-term vibration loads, affecting the stability and safety of the vibrating equipment. Existing technologies involve secondary or even multiple reinforcement treatments of the foundation to strengthen the foundation soil and enhance the strength of the large-volume crack-resistant and impermeable concrete foundation of the test bench, thereby improving structural safety. A suspended vibration test bench offers another technical solution to this problem. By isolating the vibration test bench from the foundation soil using vibration isolators, it reduces vibration loads, especially instantaneous impact loads caused by alternating stress. However, the vibration test bench involved in this patent weighs over 3000t, approaching 4000t, and is itself a large-volume concrete structure. Currently, there are no mature and readily available construction methods for it. The content in the background art is for ease of reading and understanding and does not constitute an admission of prior art. Unless otherwise stated, the terms described in the background art have the same meaning in this specification.

[0003] Contents The technical problem to be solved by this invention is to provide a construction method for a vibration test bench, which enables the construction of a suspended vibration test bench and solves the problem of deflection deformation caused by the self-weight of large-volume concrete in simply supported structures. In the preferred embodiment, it can ensure that the force on each vibration isolator is uniform and the deformation of each vibration isolator is consistent, avoiding the tilting of the vibration test bench due to inconsistent deformation of the vibration isolators, which would affect the safety of the vibration equipment. It can ensure the safety of the construction process of the vibration test bench and can promptly detect problems such as inconsistent settlement, tilting deformation of the formwork, and local deformation of the formwork.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a construction method for a vibration test bench, comprising the following steps: S1. Set the area near the outer edge of the ground under the vibration test bench as a fixed support area. The fixed support area is equipped with multiple vibration isolators. Set the area near the middle of the bottom of the vibration test bench as an adjustable support area. S2. Multiple columns are installed in the fixed support area; multiple jacks are installed in the adjustable support area; Secure the crossbeam frame to the top of the columns and jacks; S3. Based on the weight, shape, elastic modulus, Poisson's ratio, thickness-to-span ratio and density parameters of the concrete in the vibration test bench, calculate the amount of flexural deformation when each layer of concrete is poured in layers in the vibration test bench. Adjust the jack to a certain height above the top of the column, with the height parameter being the amount of flexural deformation in the opposite direction; S4. Fix the membrane layer on the crossbeam frame and erect the side mold; S5. Install embedded parts; S6. Pour the concrete for the vibration test bench in layers and vibrate it. S7. Remove the beam frame and columns in the fixed support area; Then, lower the jacks simultaneously so that the vibration test bench rests on top of the vibration isolator; The construction of the vibration test bench is accomplished through the above steps.

[0005] The preferred embodiment includes the following steps: S101, based on the maximum static load F 0， Calculate the static load F borne by a single vibration isolator i ; The maximum static load F0 refers to the maximum weight of the vibration test bench that a single vibration isolator can withstand; S102. Set the maximum pressure F based on the maximum static load F0 + the preset maximum design load F1. max Multiple pressure levels were set from F0 to [other levels]. A press was used to apply pressure to the vibration isolators, and the deformation h of each isolator at different pressure levels was recorded. The secant stiffness k was then calculated. s ; The maximum design load capacity F1 refers to the maximum weight of the experimental apparatus designed to be mounted on it; S103. Number the installation positions of the vibration isolators at different locations, and categorize them according to the static load F they bear. i Sort the vibration isolators according to their maximum pressure F. max The deformation amount h max Sort by size from smallest to largest; for those with the same deformation h, sort by secant stiffness k. s Sort by size from smallest to largest; S104, Combine the sorted vibration isolators with the static load F i Install them in the correct order, and level the top of the vibration isolator; Through the above steps, the force on each vibration isolator is balanced.

[0006] In the preferred embodiment, in step S103, the static load F i During sorting, the static load F of each weight class is... i Arrange in a disordered order; Staggered arrangement refers to the static load F in the next round. i The sorting is roughly symmetrical to the previous sorting position.

[0007] In the preferred embodiment, step S3 further includes the following steps: after each layer of concrete is poured, the top elevation of the lifting jack is adjusted accordingly to compensate for the corresponding amount of flexural deformation of each layer.

[0008] In the preferred scheme, for every 10cm of concrete poured, the jack located in the center automatically lifts by 0.03~0.07mm, while the remaining jacks lift using the elevation fitted by the deformed surface.

[0009] In the preferred embodiment, each jack is equipped with a magnetostrictive stroke sensor, which is connected to the main control device, and the elevation adjustment of each jack adopts a proportional adjustment.

[0010] In a preferred embodiment, in step S2: a shear wall is provided around the vibration test bench, and a settlement monitoring device is provided on the shear wall. The settlement monitoring device includes a cantilever bracket fixed to the shear wall, and a pull wire sensor is provided on the cantilever bracket. The pull wire of the pull wire sensor passes through the gap between the vibration test bench and the shear wall and is connected to the ground below the vibration test bench.

[0011] In a preferred embodiment, in step S4: a high support detection system is provided at the bottom of the membrane layer. The high support detection system includes a column located at the center of gravity below the vibration test bench. A support platform is provided on the top of the column. Multiple pressure sensors are provided on the support platform to detect changes in the weight of the membrane layer. The column is equipped with multiple horizontal beams extending outwards. The free ends of the horizontal beams are equipped with cantilever supports. The top of the cantilever supports contacts the bottom of the membrane layer. The cantilever supports are connected to a deformation monitoring device, which includes a pull-wire sensor. The pull-wire sensor's pull wire is connected to the ground. An inclination sensor bracket is also installed on the horizontal beam along the length of the horizontal beam. An inclination sensor is installed on the inclination sensor bracket. The deformation monitoring device is used to detect the relative deformation between the membrane layer and the ground, and the inclination sensor is used to detect the relative deformation between the membrane layer and the column.

[0012] In the preferred embodiment, in step S4: a shear wall is provided around the vibration test bench, and a supporting foam board is provided between the side mold and the shear wall when the side mold is erected.

[0013] In a preferred embodiment, in step S5: the embedded part includes multiple adjustable screws located on the vibration test bench, the upper plate is connected to the adjustable screws, and the levelness of the upper plate is adjusted.

[0014] The vibration test bench construction method provided by this invention solves the technical problem of soil plastic deformation caused by alternating loads in existing vibration test benches with fixed foundations, using a suspended vibration test bench structure. This invention also solves the construction challenges of suspended large-volume concrete. By employing a pre-lifting deflection compensation scheme, it overcomes the technical problem of deformation in suspended large-volume concrete under edge support conditions. Through a layered pouring deflection deformation compensation scheme, it overcomes the problem of stress concentration in concrete caused by different deformations between different layers, resulting in a more uniform distribution of internal stress in the large-volume concrete. In other words, this scheme solves both the problem of simply supported concrete deformation and the problem of stress concentration during deformation treatment. By adapting the overall stiffness and secant stiffness of each vibration isolator, it prevents uneven local stress distribution during the support of the vibration test bench, and avoids the tilting problem of the large-volume concrete and steel plate composite vibration test bench. To avoid the impact of settlement on the accuracy of the formwork, a settlement monitoring device is installed, using a wire sensor to detect ground settlement. To prevent deformation of the steel sheet membrane layer due to excessive stress, a high-support formwork monitoring system was installed to monitor parameters such as pressure, relative settlement, torsional deformation, and tilt angle of the formwork system, including the membrane layer, ensuring construction quality and safety. Multiple jacks were controlled synchronously in real time, especially under conditions of ground settlement and deflection compensation, to prevent non-uniform stress, "step" or "wavy" deformation of the platform, and cumulative deformation from layered pouring. The side formwork was fixed using shear walls and supporting foam boards, which effectively secured the side formwork and absorbed the impact generated during pouring. This impact was mainly caused by uneven concrete pouring in a suspended state. The high-support formwork monitoring system required a certain reaction time for compensation, during which the supporting foam boards absorbed the impact. Vibrations generated during construction also impacted the side formwork; the supporting foam boards effectively absorbed this impact. An upper plate fixed with adjustable bolts further improved the surface flatness and levelness of the vibration test bench, thereby enhancing the testing accuracy of the high-end equipment. To safeguard the research and development and testing of high-end equipment. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a top view of the present invention when the column is installed.

[0016] Figure 2 This is a top view of the crossbeam frame in this invention.

[0017] Figure 3 This is a top view of the present invention when the crossbeam frame is further configured.

[0018] Figure 4 This is a top view of the jack being installed according to the present invention.

[0019] Figure 5 This is a top view of the concrete poured according to the present invention.

[0020] Figure 6 yes Figure 5 BB cross-sectional view.

[0021] Figure 7 yes Figure 5 AA sectional view.

[0022] Figure 8 This is a schematic diagram of the layered structure during concrete pouring according to the present invention.

[0023] Figure 9 This is a schematic diagram of the high formwork detection system of the present invention.

[0024] In the diagram: 1. Column; 2. Vibration isolator; 3. Fixed support area; 4. Adjustable support area; 5. Frame beam; 6. Jack; 7. Horizontal beam; 701. Deformation monitoring device; 702. Cantilever support; 703. Foot nail; 704. Tilt sensor bracket; 705. Support platform; 706. Pressure sensor; 8. Column; 9. Settlement monitoring device; 10. Shear wall; 11. Support foam board; 12. Vibration test bench; 13. First upper plate; 14. First adjustable screw; 15. Second upper plate; 16. Second adjustable bolt; 17. Adjustable beam; 18. Pin; 19. Third pouring layer; 20. Second pouring layer; 21. First pouring layer; 22. Membrane layer. Detailed Implementation

[0025] Example 1: like Figures 1-8 A method for constructing a vibration test bench includes the following steps: S1. The area near the outer edge of the ground beneath the vibration test bench 12 is designated as a fixed support area 3, which is equipped with multiple vibration isolators 2. The area near the center of the bottom of the vibration test bench 12 is designated as an adjustable support area 4. Figure 1 As shown in the image.

[0026] S2. Multiple columns 1 are installed in the fixed support area 3, and the columns are made of I-beams; multiple jacks 6 are installed in the adjustable support area 4; such as Figures 1-4 As shown in the image.

[0027] A crossbeam frame 5 is fixedly installed on top of column 1 and jack 6. The crossbeam frame 5 is made of I-beams, channel steel, or rectangular steel pipes; for example... Figure 4 As shown in the image.

[0028] S3. Based on the weight, shape, elastic modulus, Poisson's ratio, thickness-to-span ratio, and density parameters of the concrete in the vibration test bench 12, calculate the amount of flexural deformation when each layer of concrete in the vibration test bench 12 is poured in layers; in this example, low heat of hydration C30 concrete is preferred.

[0029] The jack 6 is adjusted to a certain height above the top of the column 1. The height parameter is the amount of reverse flexural deformation. The amount of flexural deformation varies for each jack position, and the top height of the corresponding jack needs to be adjusted accordingly based on the amount of flexural deformation at different positions. Through the reverse deformation casting scheme, when the vibration test bench 12 falls onto the vibration isolator 2 to form a simply supported structure, the deformation of the vibration test bench 12 exactly overcomes the reverse deformation, keeping the bottom of the vibration test bench 12 horizontal. In this invention, the bottom of the vibration test bench 12 is a 30mm thick, complete steel plate with high tensile strength, meeting the deformation requirements.

[0030] S4. Fix the membrane layer 22 on the crossbeam frame 5 and erect the side mold; in this example, the membrane layer 22 is preferably made of steel plate with a thickness of 30mm or more.

[0031] S5. Setting embedded parts; preferably, in this example, the embedded parts include an array of pins 18 located on top of the membrane layer 22 to better transfer stress deformation from the concrete to the membrane layer. It also includes an embedded steel cage, comprising steel bars in three directions. Furthermore, it includes a first adjustable screw 14 for fixing the first upper plate 13 and a second adjustable bolt 16 for fixing the second upper plate 15; both the first adjustable screw 14 and the second adjustable bolt 16 are vertically embedded in an array on top of the vibration test bench 12.

[0032] S6. Pour the concrete for the vibration test bench 12 in layers; vibrate during pouring to ensure compaction. Use multiple vibrators simultaneously, employing a quick insertion and slow withdrawal method, and ensuring vertical insertion. Vibration points should be evenly distributed, with a spacing ≤ 1.5 times the vibrator's radius of action to avoid under-vibration or over-vibration. Figures 5-8 As shown in the image.

[0033] S7. Remove the beam frame 5 and column 1 of the fixed support area 3; as follows: Figure 6 , 7 As shown in the diagram. During dismantling, a fresh air system was installed to continuously ventilate the space under the vibration test bench 12, ensuring the safety of the dismantling process.

[0034] Then, lower the jack 6 simultaneously so that the vibration test table 12 rests on top of the vibration isolator 2; The above steps are used to construct the vibration test bench 12, a large-volume concrete and steel plate hybrid suspension structure.

[0035] Example 2: The preferred embodiment includes the following steps: S101, based on the maximum static load F 0， Calculate the static load F borne by a single vibration isolator 2. i ; The maximum static load F0 refers to the maximum weight of the vibration test bench 12 borne by a single vibration isolator 2; S102. Set the maximum pressure F based on the maximum static load F0 + the preset maximum design load F1. max Multiple pressure levels, from F0 to F0+F1, were set. A press was used to apply pressure to the vibration isolator 2, and the deformation h of each vibration isolator 2 at different pressure levels was recorded. The secant stiffness k was then calculated. s ; The maximum design load capacity F1 refers to the maximum weight of the experimental apparatus designed to be mounted on it; This means setting multiple pressure levels between F0 and F0+F1 for testing.

[0036] S103. Number the installation positions of the vibration isolators 2 at different locations, and arrange them according to the static load F they bear. i Sort the vibration isolators 2 according to their maximum pressure F. max The deformation amount h max Sort by size from smallest to largest; for those with the same deformation h, sort by secant stiffness k. s Sort by size from smallest to largest; S104, Combine the sorted vibration isolators 2 with the static load F i The order of installation corresponds to the top of vibration isolator 2, and the top is leveled. Through the above steps, the forces on each vibration isolator 2 are balanced. When no test is being conducted and a static load is applied, the vibration test bench 12 will not tilt. When a test is conducted and a dynamic load is applied, the vibration motion of the vibration test bench 12 is approximately a vertical straight line, rather than a curve, thus extending the service life of the vibration isolators 2. In this example, the vibration isolator adopts a composite structure of multiple springs and guide sleeves. A sleeve that slides between the upper and lower top plates of the vibration isolator 2 is provided for guidance. Multiple springs are provided around the guide sleeves, and the spring parameters are arranged according to the test requirements. Through the adaptation of the vibration isolators 2, the compression stroke of each vibration isolator 2 is kept consistent under static load conditions, and the vibration test bench 12 does not tilt. Under dynamic load conditions, the vibration path is approximately a vertical straight line, reducing wear on the guide sleeves and extending the service life of the vibration isolators 2.

[0037] In the preferred embodiment, in step S103, the static load F i During sorting, the static load F of each weight class is... i Arrange in a disordered order; Staggered arrangement refers to the next round of static load F iThe sorting is roughly symmetrical to the previous sorting. Figure 4 For example, in the previous round, the vibration isolators 2 at the four corner positions were arranged in the order of top left, bottom right, top right, and bottom left. In the next round, the vibration isolators 2 are arranged in the same order: bottom left, top right, bottom right, and top left. The next round is arranged in a similar manner. This scheme ensures that the supporting force of the vibration isolators 2 and the deformation after loading remain symmetrical and balanced.

[0038] Example 3: In the preferred embodiment, step S3 further includes the following step: after each layer of concrete is poured, the top elevation of the lifting jack 6 is adjusted accordingly to compensate for the corresponding deflection of each layer. Preferably, in this example, the concrete is poured in three layers, with the first layer having a total volume of 272.56 m³. 3 The total weight is 654.1 tons, and the total volume of the second compartment is 526.48 cubic meters. 3 The total weight is 1263.5 tons, and the total volume of the third compartment is 393.27 cubic meters. 3 The total weight is 943.9t, and the concrete used is low-heat C30 concrete. Before pouring the first layer of concrete, the maximum lifting height of the jacks is 0.05~0.5mm, and the lifting height of each jack 6 is determined by fitting the deformation curve. Before pouring the second and third layers of concrete, the maximum lifting height of the jacks 6 is set to 0.05~0.5mm, and the jacks 6 at other locations are subjected to curve fitting.

[0039] In the preferred embodiment, for every 10cm of concrete poured, the jack 6 located in the center automatically lifts by 0.03~0.07mm, preferably 0.05mm, while the remaining jacks 6 lift by the elevation fitted by the deformed surface.

[0040] In the preferred embodiment, each jack 6 is equipped with a magnetostrictive stroke sensor, which is connected to the main control device. During the elevation adjustment of each jack 6, a proportional adjustment scheme is adopted.

[0041] Example 4: Preferred solutions include Figure 6 , 7 In step S2 of section 9: a shear wall 10 is provided around the vibration test bench 12. The shear wall 10 is equipped with a settlement monitoring device 9. The settlement monitoring device 9 includes a cantilever bracket fixed to the shear wall 10, and a pull-wire sensor is provided on the cantilever bracket. The pull-wire sensor's pull wire passes through the gap between the vibration test bench 12 and the shear wall 10 and connects to the ground below the vibration test bench 12. The shear wall 10 is set as a reference. If ground settlement occurs, the pull-wire sensor's pull wire lengthens, and this length change reflects the settlement value. If the shear wall 10 also settles, its self-settlement is measured by a total station at a distance.

[0042] Example 5: Preferred solutions include Figure 9 In step S4: A high support detection system is provided at the bottom of the membrane layer 22. The high support detection system includes a column 8 located at the center of gravity below the vibration test bench 12. A support platform 705 is provided on the top of the column 8. Multiple pressure sensors 706 are provided on the support platform 705 to detect the weight change of the membrane layer 22. The position located on the vibration test bench 12 is usually subjected to the greatest pressure. Pressure is collected by pressure sensors 706 at the top of the column 8 at the center of gravity.

[0043] The column 8 is equipped with multiple horizontal beams 7 extending outwards. Each horizontal beam 7 has a cantilever support 702 at its free end. The top of the cantilever support 702 contacts the bottom of the membrane layer 22. The cantilever support 702 is connected to a deformation monitoring device 701, which includes a pull-wire sensor. The pull wire of the sensor is connected to the ground. This detects the travel distance between the membrane layer corresponding to the cantilever support 702 and the ground; the travel distance is a numerical value. Based on the travel distance data, the deformation of the membrane layer 22 is analyzed. By comparing the deformation of the membrane layer 22 at each horizontal beam 7, the specific deformation situation and risk warning can be assessed. For example, if the deformation on the left and right sides is negative and within a preset value, it meets the construction requirements. If the deformation value on one side is negative while the deformation value on the other side is 0 or positive, it is assessed that the concrete pouring mold of the vibration test bench 12 has a risk of overturning.

[0044] Example 5: Based on Embodiment 4, an inclination sensor bracket 704 is further provided on the horizontal beam 7, arranged along the length of the horizontal beam 7. Preferably, the bottom of the inclination sensor bracket 704 is provided with foot nails 703, and an inclination sensor is provided on the inclination sensor bracket 704. The deformation monitoring device 701 is used to detect the relative deformation between the membrane layer 22 and the ground, and the inclination sensor is used to detect the relative rotational deformation between the membrane layer 22 and the column 8. The output value of the inclination sensor is an angle value. Similar to Embodiment 4, the inclination sensor is used to assess whether there is a risk of overturning or damage to the concrete pouring mold of the vibration test bench 12. Moreover, the inclination sensor is not affected by ground settlement at the measurement location.

[0045] Example 6: Preferred solutions include Figure 5 As shown, in step S4: a shear wall 10 is provided around the vibration test bench 12. When erecting the side formwork, a supporting foam board 11 is provided between the side formwork and the shear wall 10. In addition to providing support, the supporting foam board 11 can also buffer the impact of concrete on the side formwork during concrete pouring.

[0046] Example 7: Preferred solutions include Figures 6-7As shown, in step S5: the embedded part includes multiple adjustable screws located on the vibration test bench 12, the upper plate is connected to the adjustable screws, and the levelness of the upper plate is adjusted. Figure 6 In this invention, the first upper plate 13 is fixedly connected to the first adjustable screw 14, and the second upper plate 15 is fixedly connected to the second adjustable bolt 16. The flatness error of the upper plate is controlled within 0.2mm, and the levelness error is controlled within 0.03%. Relying solely on the precision control of the pouring construction is insufficient to achieve these technical parameters. Therefore, this invention employs a method where a nut is first installed on the adjustable bolt, and the height of the nut is adjusted to be consistent. Then, the upper plate is installed, and the flatness and levelness errors of the upper plate are adjusted by adjusting the axial position of the nut on the adjustable bolt. It is then fixed with a nut. Preferably, the top surface of the upper plate has multiple grooves, and the ends of the adjustable bolts and the upper nuts are all located within these grooves. After the upper plate is leveled, grout is poured below it. Preferably, the upper plate also has multiple grouting holes, and grouting is performed simultaneously through each hole to improve grouting efficiency.

[0047] Although this application has been described in conjunction with specific features and embodiments, it is obvious that various modifications and combinations can be made thereto without departing from the spirit and scope of this application. Accordingly, this specification and drawings are merely illustrative descriptions of the application as defined by the appended claims, and are considered to cover any and all modifications, variations, combinations, or equivalents within the scope of this application. Clearly, those skilled in the art can make various alterations and modifications to this application without departing from its scope. Thus, if such modifications and modifications fall within the scope of the claims and their equivalents, this application is also intended to include such modifications and modifications.

Claims

1. A method for constructing a vibration test bench, characterized in that: Includes the following steps: S1. The area of ​​the ground near the outer edge below the vibration test bench (12) is set as a fixed support area (3). The fixed support area (3) is equipped with multiple vibration isolators (2). The area of ​​the bottom of the vibration test bench (12) near the middle is set as an adjustable support area (4). S2. Multiple columns (1) are set in the fixed support area (3); multiple jacks (6) are set in the adjustable support area (4); A crossbeam frame (5) is fixedly installed on the top of the column (1) and the jack (6); S3. Based on the weight, shape, elastic modulus, Poisson's ratio, thickness-to-span ratio and density parameters of the concrete in the vibration test bench (12), calculate the amount of flexural deformation when each layer of concrete is poured in layers in the vibration test bench (12). Adjust the jack (6) to a certain height above the top of the column (1), with the height parameter being the amount of flexural deformation in the opposite direction; S4. Fix the membrane layer (22) on the crossbeam frame (5) and erect the side mold; S5. Install embedded parts; S6. Pour the concrete into the vibration test bench (12) in layers and vibrate it. S7. Remove the beam frame (5) and column (1) of the fixed support area (3); Then, the jack (6) is lowered synchronously so that the vibration test bench (12) lands on top of the vibration isolator (2); The construction of the vibration test bench (12) is achieved through the above steps.

2. The construction method for the vibration test bench according to claim 1, characterized in that: Step S1 includes the following steps: S101, based on the maximum static load F 0， Calculate the static load F borne by a single vibration isolator (2). i ; The maximum static load F0 refers to the maximum weight of the vibration test bench (12) borne by a single vibration isolator (2); S102. Set the maximum pressure F based on the maximum static load F0 + the preset maximum design load F1. max Multiple pressure levels are set from F0 to (F0+F1). A press is used to apply pressure to the vibration isolator (2). The deformation h of each vibration isolator (2) under different pressure levels is recorded, and the secant stiffness k is calculated. s ; The maximum design load capacity F1 refers to the maximum weight of the experimental apparatus designed to be mounted on it; S103. Number the installation positions of the vibration isolators (2) at different locations, and arrange them according to the static load F they bear. i Sort the vibration isolators (2) according to their maximum pressure F. max The deformation amount h max Sort by size from smallest to largest; for those with the same deformation h, sort by secant stiffness k. s Sort by size from smallest to largest; S104, Combine the sorted vibration isolators (2) with the static load F i The order corresponds to the installation, and the top of the vibration isolator (2) is leveled; Through the above steps, the forces on each vibration isolator (2) are balanced.

3. The construction method for the vibration test bench according to claim 1, characterized in that: in In step S103, the static load F i During sorting, the static load F of each weight class is... i Arrange in a disordered order; Staggered arrangement refers to the static load F in the next round. i The sorting is roughly symmetrical to the previous sorting position.

4. The construction method for the vibration test bench according to claim 1, characterized in that: Step S3 also includes the following steps: for each layer of concrete poured, the top elevation of the lifting jack (6) is adjusted accordingly to compensate for the corresponding amount of flexural deformation of each layer.

5. The construction method for the vibration test bench according to claim 4, characterized in that: For every 10cm of concrete poured, the jack (6) located in the center automatically lifts by 0.03~0.07mm, while the remaining jacks (6) lift by the elevation fitted by the deformed surface.

6. The construction method for the vibration test bench according to claim 4, characterized in that: in Each jack (6) is equipped with a magnetostrictive travel sensor, which is connected to the main control device. The elevation adjustment of each jack (6) adopts proportional adjustment.

7. The construction method of the vibration test bench according to claim 1, characterized in that in step S2: a shear wall (10) is provided around the vibration test bench (12), the shear wall (10) is provided with a settlement monitoring device (9), the settlement monitoring device (9) includes a cantilever bracket fixed on the shear wall (10), a pull wire sensor is provided on the cantilever bracket, the pull wire of the pull wire sensor passes through the gap between the vibration test bench (12) and the shear wall (10) and is connected to the ground below the vibration test bench (12).

8. The construction method of the vibration test bench according to claim 1, characterized in that in step S4: a high formwork detection system is provided at the bottom of the membrane layer (22), the high formwork detection system includes a column (8) located at the center of gravity below the vibration test bench (12), a support platform (705) is provided at the top of the column (8), and multiple pressure sensors (706) are provided on the support platform (705) for detecting the weight change of the membrane layer (22); The column (8) is provided with multiple horizontal beams (7) extending around it. The free end of the horizontal beam (7) is provided with a cantilever support (702). The top of the cantilever support (702) is in contact with the bottom of the membrane layer (22). The cantilever support (702) is connected to the deformation monitoring device (701). The deformation monitoring device (701) includes a pull wire sensor. The pull wire of the pull wire sensor is connected to the ground. An inclination sensor bracket (704) is also provided on the horizontal beam (7) along the length of the horizontal beam (7). An inclination sensor is provided on the inclination sensor bracket (704). A deformation monitoring device (701) is used to detect the relative deformation between the membrane layer (22) and the ground. The inclination sensor is used to detect the relative deformation between the membrane layer (22) and the column (8).

9. The construction method of the vibration test bench according to claim 1, characterized in that in step S4: a shear wall (10) is provided around the vibration test bench (12), and when the side formwork is erected, a supporting foam board (11) is provided between the side formwork and the shear wall (10).

10. The construction method of the vibration test bench according to claim 1, characterized in that in step S5: the embedded part includes multiple adjustable screws located on the vibration test bench (12), the upper plate is connected to the adjustable screws, and the level of the upper plate is adjusted.

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