An external procurement system for testing and detecting seismic isolation bearings and a method of use thereof

Abstract

The present invention discloses an external acquisition system for testing and detecting seismic isolation bearings and a method for use. The external acquisition system includes a seismic isolation bearing, a placement seat and a collection device. The seismic isolation bearing and the collection device are placed in the placement seat, and the collection device is arranged on the seismic isolation bearing. The two ends of the collection device are in contact with the seismic isolation bearing and the placement seat, respectively. The collection device provided in the present invention can effectively shield the friction and inertia forces in the device, and ensure the accuracy and reliability of the bearing test and detection results; the collection device obtains the eccentric position of the seismic isolation bearing after force collection and calculation, and calculates the real-time internal force of the seismic isolation bearing based on the eccentric position to ensure the accuracy of the seismic isolation bearing detection results; and the theoretical center position is obtained by first testing, and then the shear test is performed based on the theoretical center position to ensure the accuracy of the test results.

Description

Technical Field

[0001] The present invention relates to the technical field of seismic isolation bearing detection, and in particular to an external procurement system for seismic isolation bearing testing and detection and a use method thereof. Background Art

[0002] When performing compression shear or tension shear tests on seismic isolation bearings, the horizontal restoring force of the seismic isolation bearings is obtained by a force sensor located inside a horizontal actuator. However, due to the non-negligible friction between the rolling device located at the bottom of the detection device and the lower supporting structure, and the inertia of the horizontal loading platform during rapid movement, the value of the horizontal restoring force of the bearing obtained by the horizontal actuator has an obvious systematic error, which in turn causes the detection results of the seismic isolation bearings to be inaccurate and difficult to correct systematically. The present invention provides a seismic isolation bearing test and detection external procurement system and use method to solve the above problems. Summary of the invention

[0003] The present invention provides an external procurement system and a use method for testing and detecting a seismic isolation bearing, which can accurately measure the real-time force and eccentricity of the force point of the bearing during the test, and effectively solve the problems of friction and inertial force influence in the internal procurement system.

[0004] The technical solution adopted by the present invention to solve the above technical problems is:

[0005] An external sampling system for testing and detecting a seismic isolation bearing, characterized in that: it comprises a seismic isolation bearing, a placement seat and a sampling device, wherein the seismic isolation bearing and the sampling device are placed in the placement seat, the sampling device is located on the seismic isolation bearing, and the upper and lower parts of the sampling device are in contact with the seismic isolation bearing and the placement seat respectively;

[0006] The acquisition device comprises a three-axis force sensor and an upper connecting plate. The upper connecting plate is arranged above the seismic isolation support and connected to the seismic isolation support. The three-axis force sensor is arranged in groups on the upper connecting plate.

[0007] Furthermore, the placement seat includes a base, a rolling device, a vertical guide, a loading plate, a vertical actuator and a top plate, the rolling device and the vertical guide are arranged on the base, the seismic isolation support is arranged on the rolling device, the loading plate is arranged on the vertical guide and connected to the top of the collection device, the top plate is arranged at the top of the vertical guide, the vertical actuator is arranged on the bottom surface of the top plate, and the actuating end at the bottom of the vertical actuator is connected to the loading plate.

[0008] Furthermore, the rolling device includes a rolling bar and a lower connecting plate, the rolling bar is arranged on the base along the lateral interval, the lower connecting plate is arranged on the rolling bar arranged at intervals, and the lower connecting plate is arranged below the seismic isolation support and connected to the seismic isolation support.

[0009] Furthermore, it also includes a horizontal actuator, which is arranged on the base and has an actuating end in contact with the side surface of the lower connecting plate; the movement direction of the horizontal actuator is perpendicular to the axial direction of the rolling bar.

[0010] A method for using an external procurement system for seismic isolation bearing testing and detection comprises the following steps:

[0011] S1, equipment assembly: place the rolling device on the placement seat, then place the seismic isolation support on the rolling device, place the acquisition device, then install the loading plate, and install the vertical actuator and top plate above the loading plate, and adjust the positions of the vertical actuator and top plate;

[0012] S2, applying vertical load: applying vertical static load through the loading plate, and the three-axis force sensor collects real-time force results under the vertical static load;

[0013] S3, calculating the eccentric position: calculating the data collected by the three-axis force sensors at different positions, calculating the eccentricity of the seismic isolation support, and obtaining the coordinates of the theoretical center point of the seismic isolation support;

[0014] S4, experimental operation: Perform shear test through horizontal actuator, collect real-time force results through three-axis force sensor, and calculate the real force of the support according to the eccentricity data in S3.

[0015] Furthermore, in step S2, the force collection results of the three-axis force sensor are as follows:

[0016]

[0017] The in-plane position coordinate vector of the three-axis force sensor:

[0018]

[0019] Unit column vector:

[0020]

[0021] Furthermore, in step S3, the calculation formula of the eccentricity of the seismic isolation bearing is as follows:

[0022]

[0023] Where T represents the transpose of the vector;

[0024] The coordinates of the center point of the seismic isolation bearing are obtained as (x0, y0).

[0025] Furthermore, in step S4, under the shear force test, the real-time force collection results of the three-axis force sensor are as follows:

[0026]

[0027] The in-plane position coordinate vector of the three-axis force sensor:

[0028]

[0029] Unit column vector:

[0030]

[0031] The calculation formula of the bearing force is as follows:

[0032]

[0033] Where T represents the transpose of the vector and t represents the time variable.

[0034] The beneficial effects of the present invention are as follows:

[0035] Setting up a collection device can effectively shield the friction and inertia force in the device, ensuring the accuracy and reliability of the bearing test and detection results; the collection device obtains the eccentric position of the isolation bearing through force collection and calculation, and calculates the real-time internal force of the isolation bearing based on the eccentric position to ensure the accuracy of the isolation bearing detection results;

[0036] First, a preliminary test is carried out, and the eccentric position is calculated through the test results. Then a shear test is carried out. Based on the eccentric position measured in the preliminary test and the shear test results, the impact of the eccentricity of the isolation bearing placement can be accurately considered, and the precise force value of the isolation bearing can be calculated to ensure the accuracy of the shear test results of the isolation bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the overall structure of the external procurement system of the present invention;

[0038] Figure 2 It is a side view schematic diagram of the external procurement system of the present invention;

[0039] Figure 3 A perspective diagram of the setting state of the acquisition device of the present invention;

[0040] Figure 4 It is a schematic diagram of sampling and analyzing force points of a collection device according to a specific embodiment of the present invention;

[0041] Figure 5 It is a schematic diagram of the force analysis of the shear test of the seismic isolation bearing according to a specific embodiment of the present invention;

[0042] Figure 6 A schematic diagram of setting sampling points when a plurality of three-axis force sensors of the present invention are grouped together;

[0043] Figure 7It is a schematic diagram of force analysis of a shear test when a plurality of three-axis force sensors of the present invention are grouped together.

[0044] Figure numerals: 1-seismic isolation support, 2-placing seat, 21-base, 22-rolling device, 23-vertical guide, 24-loading plate, 25-vertical actuator, 26-top plate, 3-collection device, 31-three-axis force sensor, 32-upper connecting plate, 4-horizontal actuator. DETAILED DESCRIPTION

[0045] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings of the specification. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0046] In the description of this patent, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing this patent and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this patent.

[0047] like Figure 1 , 2 As shown in Figure 3, an external acquisition system for testing and detecting a seismic isolation bearing comprises a seismic isolation bearing 1, a placement seat 2 and a collection device 3. The seismic isolation bearing 1 and the collection device 3 are placed in the placement seat 2, and the collection device 3 is located on the seismic isolation bearing 1. The upper and lower parts of the collection device 3 are in contact with the seismic isolation bearing 1 and the placement seat 2 respectively. The placement seat 2 provides an installation foundation and provides a vertical load; the collection device 3 is arranged between the force-applying structure and the seismic isolation bearing 1, and is used to collect the real-time force of the seismic isolation bearing during the test process, and calculate the force deviation of the detection system as the theoretical center position of the seismic isolation bearing 1 based on the collected force results, and then use the theoretical center position as the calculation basis when performing the shear test to ensure the accuracy of the test results.

[0048] like Figure 2 , 3 As shown, the acquisition device 3 includes a three-axis force sensor 31 and an upper connecting plate 32 . The upper connecting plate 32 is arranged above the seismic isolation support 1 and connected to the seismic isolation support 1 . The three-axis force sensor 31 is arranged in groups on the upper connecting plate 32 .

[0049] The working principle of the collection device 3 is as follows: the collection device 3 can effectively shield the friction and inertia forces in the device, thereby ensuring that the collection device 3 can apply the vertical static load without interference, and thus can accurately obtain the theoretical center position of the seismic isolation bearing 1; the three-axis force sensor 31 is arranged on the seismic isolation bearing 1 through the upper connecting plate 32, and the vertical static load is applied to the collection device 3 through the vertical actuator 25. The vertical static load will be transmitted to the seismic isolation bearing 1 through the collection device 3. The three-axis force sensor 31 can collect the real-time force results fed back by the seismic isolation bearing 1, and substitute the collected data into the formula to calculate the theoretical center position of the seismic isolation bearing 1. After calculating the theoretical center position of the seismic isolation bearing 1, when performing subsequent shear tests, the theoretical center position is used as a reference for calculation, which solves the problem of friction and inertia force influence in the internal collection system and ensures the accuracy of the calculation results.

[0050] like Figure 2 As shown, further, the placement seat 2 includes a base 21, a rolling device 22, a vertical guide 23, a loading plate 24, a vertical actuator 25 and a top plate 26, the rolling device 22 and the vertical guide 23 are arranged on the base 21, the seismic isolation support 1 is arranged on the rolling device 22, the loading plate 24 is arranged on the vertical guide 23, and is connected to the top of the collection device 3, the top plate 26 is arranged on the top of the vertical guide 23, the vertical actuator 25 is arranged on the bottom surface of the top plate, and the actuating end at the bottom of the vertical actuator 25 is connected to the loading plate 24; the base 21 provides a basic plane, the vertical guide 23 ensures that the loading plate 24 maintains a horizontal state and moves up and down, thereby achieving the accuracy of the pressurization result, and the loading plate 24 is arranged at the actuating end of the vertical actuator 25, and the loading plate 24 is used to evenly disperse the vertical static load to the three-axis force sensor 31.

[0051] Furthermore, the rolling device 22 includes a rolling bar and a lower connecting plate, the rolling bar is arranged on the base 21 along the lateral interval, the lower connecting plate is arranged on the rolling bar arranged at intervals, and the lower connecting plate is arranged below the seismic isolation support 1 and connected to the seismic isolation support 1.

[0052] like Figure 1 , 2 As shown, further, it also includes a horizontal actuator 4, which is used for shear test and provides horizontal load. The horizontal actuator 4 is arranged on the base 21, and its actuating end contacts the side of the lower connecting plate; the movement direction of the horizontal actuator 4 is perpendicular to the axis direction of the roller. The vertical static load is applied by the vertical actuator 25 vertically arranged on the upper part of the seismic isolation support 1, and the horizontal load is applied by the horizontal actuator 4 horizontally arranged on the lower part of the seismic isolation support 1.

[0053] like Figure 4 , 5As shown, the three-axis force sensors 31 in the acquisition device 3 of the present invention are arranged in groups. The specific number and setting positions of the three-axis force sensors 31 are flexibly set according to actual application requirements. The specific embodiment of the present invention uses 4 three-axis force sensors 31 as a group to explain the external acquisition system of the present invention.

[0054] like Figure 4 , 5 As shown, a method for using an external procurement system for seismic isolation bearing testing and detection includes the following steps:

[0055] S1, equipment assembly: place the rolling device 22 on the placement seat 2, then place the seismic isolation support 1 on the rolling device 22, and place the collection device 3, then install the loading plate 24, and install the vertical actuator 25 and the top plate 26 above the loading plate 24, and adjust the positions of the vertical actuator 25 and the top plate 26;

[0056] S2, applying vertical load: applying vertical static load through the loading plate 24, and the three-axis force sensor 31 collects real-time force results under the vertical static load;

[0057] The force collection results of the four three-axis force sensors 31 are as follows:

[0058]

[0059] The in-plane position coordinate vectors of the four three-axis force sensors 31 are:

[0060]

[0061] Unit column vector:

[0062]

[0063] S3, calculating the eccentric position: calculating the data collected by the three-axis force sensor 31 at different positions, calculating the eccentricity of the seismic isolation support 1, and obtaining the coordinates of the theoretical center point of the seismic isolation support 1;

[0064] The calculation formula of the eccentricity of the seismic isolation bearing 1 is as follows:

[0065]

[0066] Where T represents the transpose of the vector;

[0067] The coordinates of the center point of the seismic isolation support 1 are (x0, y0), that is,

[0068] S4, experimental operation: a shear test is performed by means of the horizontal actuator 4, the three-axis force sensor 31 collects the real-time force results, and the actual force of the support is calculated according to the eccentricity data in S3;

[0069] Under the shear force test, the real-time force collection results of the four three-axis force sensors 31 are as follows:

[0070]

[0071] The in-plane position coordinate vectors of the four three-axis force sensors 31 are:

[0072]

[0073] Unit column vector:

[0074]

[0075] The calculation formula of the bearing force is as follows:

[0076]

[0077] Where T represents the transpose of the vector and t represents the time variable.

[0078] like Figure 6 , 7 As shown, according to actual application needs, multiple three-axis force sensors 31 are used as a group for testing, and the number and setting positions of the multiple three-axis force sensors 31 are flexibly set according to needs; the real-time collection results of the vertical static loads of the multiple three-axis force sensors 31 are:

[0079]

[0080] The in-plane position coordinate vectors of the multiple three-axis force sensors 31 are:

[0081]

[0082] Unit column vector:

[0083]

[0084] The calculation formula of the eccentric position is the same as that of step S3.

[0085] When performing the shear force test, the real-time force collection results of the multiple three-axis force sensors 31 are as follows:

[0086]

[0087] The in-plane position coordinate vector of the three-axis force sensor 31:

[0088]

[0089] Unit column vector:

[0090]

[0091] The calculation formula for the force result of the seismic isolation bearing is the same as the calculation formula in step S4.

[0092] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-limiting from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any reference numerals in the claims should not be regarded as limiting the claims involved.

Claims

1. A method for using an external procurement system for testing and detecting a seismic isolation bearing, which is applied to the external procurement system for testing and detecting a seismic isolation bearing, wherein the external procurement system for testing and detecting a seismic isolation bearing comprises a seismic isolation bearing (1), a placement seat (2) and a collection device (3), wherein the seismic isolation bearing (1) and the collection device (3) are placed in the placement seat (2), the collection device (3) is located on the seismic isolation bearing (1), and the upper and lower parts of the collection device (3) are in contact with the seismic isolation bearing (1) and the placement seat (2), respectively; The acquisition device (3) comprises a three-axis force sensor (31) and an upper connecting plate (32); the upper connecting plate (32) is arranged above the seismic isolation support (1) and connected to the seismic isolation support (1); the three-axis force sensor (31) is arranged in groups on the upper connecting plate (32); The placement seat (2) comprises a base (21), a rolling device (22), a vertical guide (23), a loading plate (24), a vertical actuator (25) and a top plate (26); the rolling device (22) and the vertical guide (23) are arranged on the base (21); the seismic isolation support (1) is arranged on the rolling device (22); the loading plate (24) is arranged on the vertical guide (23) and is connected to the top of the collection device (3); the top plate (26) is arranged on the top of the vertical guide (23); the vertical actuator (25) is arranged on the bottom surface of the top plate; and the actuating end at the bottom of the vertical actuator (25) is connected to the loading plate (24); The rolling device (22) comprises a rolling bar and a lower connecting plate, wherein the rolling bar is arranged on the base (21) at intervals in the transverse direction, the lower connecting plate is arranged on the rolling bar arranged at intervals, and the lower connecting plate is arranged below the seismic isolation support (1) and connected to the seismic isolation support (1); It also includes a horizontal actuator (4), which is arranged on the base (21) and has an actuating end in contact with the side surface of the lower connecting plate; the movement direction of the horizontal actuator (4) is perpendicular to the axial direction of the rolling bar; Its characteristics are: The method of use includes the following steps: S1, equipment assembly: placing the rolling device (22) on the placement seat (2), then placing the seismic isolation support (1) on the rolling device (22), placing the collection device (3), then installing the loading plate (24), and installing the vertical actuator (25) and the top plate (26) above the loading plate (24), and adjusting the positions of the vertical actuator (25) and the top plate (26); S2, applying a vertical load: applying a vertical static load through a loading plate (24), and a three-axis force sensor (31) collecting real-time force results under the vertical static load; S3, calculating the eccentric position: calculating the data collected by the three-axis force sensor (31) at different positions, calculating the eccentricity of the seismic isolation support (1), and obtaining the coordinates of the theoretical center point of the seismic isolation support (1); S4, experimental operation: a shearing experiment is performed by means of a horizontal actuator (4), a three-axis force sensor (31) collects real-time force results, and the force calculation of the support is performed according to the eccentricity data in S3.

2. The method for using the external procurement system for seismic isolation bearing testing and detection according to claim 1 is characterized by: In step S2, the force collection result of the three-axis force sensor (31) is as follows: The in-plane position coordinate vector of the three-axis force sensor (31): Unit column vector:

3. The method for using the seismic isolation bearing test and detection external procurement system according to claim 1 is characterized by: In step S3, the eccentricity calculation formula of the seismic isolation support (1) is as follows: Where T represents the transpose of the vector; The coordinates of the center point of the seismic isolation support (1) are obtained as (x0, y0).

4. The method for using the external procurement system for seismic isolation bearing testing and detection according to claim 1 is characterized by: In step S4, under the shear force test, the real-time force collection results of the three-axis force sensor (31) are as follows: The in-plane position coordinate vector of the three-axis force sensor (31): Unit column vector: The calculation formula of the bearing force is as follows: Where T represents the transpose of the vector and t represents the time variable.

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