A self-monitoring seismic isolation bearing

Abstract

The application discloses a self-monitoring isolation bearing, which comprises an isolation bearing body, a displacement sensor module and a monitoring module, wherein the isolation bearing body is provided with a first fixing part, a second fixing part and a deformation part extending in a first direction; the displacement sensor module comprises a displacement sensor arranged outside the deformation part; the displacement sensor is connected with the first fixing part and / or the second fixing part; when the deformation part deforms, the data of the displacement sensor changes correspondingly; the monitoring module is connected with the displacement sensor module; and the monitoring module is used for one or more operations of collecting, processing, storing and outputting the data of the displacement sensor. The self-monitoring isolation bearing can accurately feedback the displacement and vertical load of the isolation bearing body, is reliable in monitoring, convenient to install, excellent in durability, and easier to realize calibration of the sensor, maintenance of the monitoring system, replacement of the sensor and other work.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of building seismic isolation, in particular to a self-monitoring seismic isolation support. BACKGROUND

[0002] On May 12, 2021, the State Council's regular meeting passed the "Regulations on Seismic Management of Construction Projects (Draft)", which stipulates that new schools, kindergartens, hospitals, nursing homes, child welfare institutions, emergency command centers, emergency shelters, radio and television buildings located in high-intensity seismic prevention areas and earthquake key monitoring and prevention areas shall adopt seismic isolation and other technologies in accordance with relevant national regulations to ensure that they can meet normal use requirements when a regional seismic fortification earthquake occurs. When seismic reinforcement is carried out on schools, kindergartens, hospitals, nursing homes, child welfare institutions, emergency command centers, emergency shelters, radio and television buildings located in high-intensity seismic prevention areas and earthquake key monitoring and prevention areas, seismic isolation and other technologies shall be used after thorough argumentation to ensure that their seismic performance meets the mandatory standards for seismic fortification. The state encourages the use of seismic isolation and other technologies in construction projects other than those specified in the preceding paragraph to improve seismic performance.

[0003] Seismic isolation technology was introduced into China in the 1990s and has undergone a long development process. It has now entered a period of rapid development in China. As of now, the number of seismic isolation buildings constructed in China has reached nearly 12,000, and seismic isolation technology has played a significant role in earthquake prevention and disaster reduction in the new era. However, there is little monitoring of seismic isolation supports, and the few existing seismic isolation support monitoring systems and methods are not highly mature in technology and have poor monitoring results. For example: ZL201910098679.5 and ZL201910099391.x provide a real-time testing system for seismic rubber bearings and a method for preparing the same. The monitoring scheme is to use a pressure sensor in the oil-filled core to monitor the vertical load and horizontal displacement of the seismic rubber bearing in real time. The technical shortcomings are obvious. The pressure sensor is buried inside the support, which is complex to produce and process. The sensor is in a high-temperature and high-pressure working environment during support vulcanization production, which is a great test for the accuracy and durability of the sensor. Second, the sensor is located inside the support and is subject to complex stress conditions for a long time, which greatly increases the risk of sensor failure. Third, the sensor is buried inside the support, and when the sensor fails, it is basically impossible to replace the sensor without replacing the support, which is very costly. Fourth, the calibration equation of the oil-filled pressure sensor Pi=fi(P,θ,X) is too complex. The pressure-shear test of the support is usually done in one horizontal direction. If the pressure sensor is not absolutely symmetrically arranged relative to the support, a sufficient number of data samples of pressure, displacement, and angle are needed to obtain relatively accurate results. A few or several groups of data are far from enough, and the monitoring reliability is not high.

[0004] The disclosure of the foregoing Background Art is given solely for the purpose of aiding in the understanding of the inventive concept and technical solutions of the present application, and it does not necessarily belong to the prior art of the present patent application, nor necessarily give technical teaching; in the absence of explicit evidence showing that the above-mentioned content has been disclosed before the filing date of the present patent application, the above-mentioned background art should not be used to evaluate the novelty and inventiveness of the present application. SUMMARY

[0005] The purpose of the present application is to provide a self-monitoring isolation bearing, which has better durability and can accurately feedback the displacement and vertical load of the isolation bearing body through the mechanical constitutive relation of the monitoring system and the isolation bearing body.

[0006] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is as follows:

[0007] The present application provides a self-monitoring isolation bearing, which comprises:

[0008] An isolation bearing body, which has a first fixed part, a second fixed part, and a deformation part extending in a first direction, the deformation part having a first end part and a second end part in the first direction, the first fixed part being connected to the first end part of the deformation part, and the second fixed part being connected to the second end part of the deformation part;

[0009] A displacement sensor module, which comprises at least one displacement sensor arranged outside the deformation part, the displacement sensor being connected to the first fixed part and / or the second fixed part, and when the deformation part deforms in a second direction, the data of the displacement sensor changes correspondingly;

[0010] A monitoring module, which is connected to the displacement sensor module, and is used for one or more operations of collecting, processing, storing, and outputting the data of the displacement sensor;

[0011] The second direction is the same as or different from the first direction.

[0012] Since all sensors are arranged outside the bearing, the sensors and the monitoring module can be installed after the installation of the isolation bearing, and the sensors do not need to withstand the high temperature and high pressure environment during the production of the rubber isolation bearing, thereby avoiding the damage and pollution of the sensing module and the monitoring module during the production, transportation, and installation of the bearing.

[0013] Moreover, during the operation period of the building, when the bearing undergoes compression-shear hysteresis motion, the sensors are not affected by the pressure and shear of the bearing, and the durability of the sensors and the monitoring module is better.

[0014] Further, the displacement sensor module comprises a horizontal displacement sensor and / or a vertical displacement sensor.

[0015] The vertical displacement sensor has a vertical sensor fixed part and a vertical sensor detection part, the vertical sensor fixed part is connected with the first fixed part, the vertical sensor detection part is connected with the second fixed part, and the vertical sensor detection part can detect the distance between the vertical displacement sensor and the second fixed part, or the vertical sensor fixed part is connected with the second fixed part, the vertical sensor detection part is connected with the first fixed part, and the vertical sensor detection part can detect the distance between the vertical displacement sensor and the first fixed part.

[0016] The horizontal displacement sensor has a horizontal sensor fixed part and a horizontal sensor detection part, the horizontal sensor fixed part is connected with the first fixed part, the horizontal sensor detection part is directly or indirectly connected with the second fixed part, and the horizontal sensor detection part can detect the distance between the horizontal displacement sensor and the second fixed part.

[0017] The monitoring module calculates the deformation generated by the deformation part according to the distance detected by the vertical sensor detection part and / or the horizontal sensor detection part and the preset geometric relationship, and the deformation can be represented by calculating three-way displacement.

[0018] Further, the displacement sensor module comprises the horizontal displacement sensor, and the displacement sensor module further comprises:

[0019] A first support, the first support is connected with the first fixed part;

[0020] A second support, the second support is connected with the second fixed part;

[0021] The horizontal sensor fixed part is indirectly connected with the first fixed part through the first support, the horizontal sensor detection part is indirectly connected with the second fixed part through the second support, and the horizontal sensor detection part can detect the distance between the horizontal displacement sensor and the second support.

[0022] The monitoring module calculates the deformation generated by the deformation part according to the distance detected by the horizontal sensor detection part and the preset geometric relationship.

[0023] The arrangement of the first support and the second support makes the sensor not directly contact with the isolation bearing body, when the isolation bearing body deforms, although the position of the sensor and / or the position of the second support changes, the connection condition of the sensor and the second support is not disturbed, and the sensor is not blocked by the isolation bearing body, and the measured data is still accurate and effective.

[0024] Further, the displacement sensor module comprises two horizontal displacement sensors, two first supports corresponding to the two horizontal displacement sensors respectively;

[0025] The first fixing part comprises a first fixing point and a second fixing point, the first fixing point is not coincident with the second fixing point, and the two first supports are arranged at the first fixing point and the second fixing point respectively;

[0026] The second support comprises a detection point, the horizontal displacement sensor is connected with the detection point, and the detection point, the first fixing point and the second fixing point are located on the same side of the shock isolation support body.

[0027] The two horizontal displacement sensors are arranged with a preset geometric relationship, the accurate displacement of the shock isolation support in the horizontal direction can be measured, the geometric relationship between the points ensures that the deformation of the shock isolation support body does not hinder the connection between the displacement sensor and the detection point, the sensor measuring point does not contact or wind the rubber support body, and the monitoring result is accurate.

[0028] Further, the cross-sectional shape of the first fixing part is rectangular, and the first fixing point and the second fixing point are located at two end points of opposite sides of the rectangle respectively;

[0029] The positions of the detection point and the two horizontal displacement sensors are projected on three points on a same plane parallel to the first fixing part to form three vertices of a right triangle, the projection point corresponding to the detection point is a right vertex of the right triangle, and the right vertex is not located in the projection of the second fixing part on the same plane parallel to the first fixing part.

[0030] Further, the detection point and the two horizontal displacement sensors are located in a same plane parallel to the first fixing part.

[0031] Further, the monitoring module can calculate the vertical load data of the shock isolation support body according to the pre-stored compression stiffness data and the data detected by the vertical sensing and detecting part.

[0032] Further, the monitoring module can calculate the deformation acceleration data of the shock isolation support body according to the data measured by the displacement sensor module.

[0033] Further, the displacement sensor is a pull-wire displacement sensor.

[0034] Further, the shock isolation support body is one or more of a lead rubber shock isolation support, a natural rubber shock isolation support, a high-damping rubber shock isolation support and an ultra-high-damping rubber shock isolation support.

[0035] The technical scheme provided by the present application has the beneficial effects as follows:

[0036] (1) Since the displacement sensor is externally arranged, the sensor module and the monitoring module can be installed after the installation of the isolation bearing is completed, so that the sensor module and the monitoring module are prevented from being damaged and polluted during the production, transportation and installation of the bearing body, and the calibration and replacement of the sensor, the maintenance of the monitoring module and the like are more easily realized;

[0037] (2) The sensor is not affected by the pressure and shear of the bearing during operation, and the durability of the sensor and the monitoring module is better;

[0038] (3) The displacement, vertical load, deformation acceleration and the like of the isolation bearing are accurately fed back through the mechanical constitutive relation between the displacement sensor module and the bearing body. BRIEF DESCRIPTION OF DRAWINGS

[0039] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0040] Figure 1 It is a whole schematic view of the isolation bearing in the embodiment of the present application;

[0041] Figure 2 It is a side view of the isolation bearing body without deformation in the embodiment of the present application;

[0042] Figure 3 It is a side view of the isolation bearing body with deformation in the embodiment of the present application;

[0043] Figure 4 It is a partial sectional view of the isolation bearing in the embodiment of the present application;

[0044] Figure 5 It is a schematic view of the geometric relation of the isolation bearing in the embodiment of the present application;

[0045] Figure 6 It is a function relation diagram corresponding to the calculation of the vertical load in the embodiment of the present application.

[0046] Wherein, the reference signs are: 1-isolation bearing body, 11-first fixed part, 12-second fixed part, 13-deformation part, 21-vertical displacement sensor, 22-horizontal displacement sensor, 31-first support, 311-first fixed point, 312-second fixed point, 32-second support, 321-detection fixed point, 322-detection point, 33-connection bolt, 4-horizontal displacement vector, 51-data wire, 52-data acquisition instrument, 53-processor, 6-cloud server. DETAILED DESCRIPTION

[0047] In order to make the personnel in the technical field better understand the application scheme, the technical scheme in the embodiment of the application will be clearly and completely described below in combination with the drawings in the embodiment of the application. Obviously, the described embodiments are only a part of the embodiments of the application, not all. Based on the embodiments in the application, all other embodiments obtained by the person skilled in the art without creative labor should belong to the protection scope of the application.

[0048] It should be noted that the terms "first", "second" and the like in the specification and claims of the application and the above-described drawings are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, device, product or equipment including a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or equipment.

[0049] In an embodiment of the application, a self-monitoring isolation bearing is provided, the isolation bearing comprising:

[0050] An isolation bearing body 1, the isolation bearing body 1 having a first fixed part 11, a second fixed part 12, a deformation part 13 extending in a first direction, the deformation part 13 having a first end part and a second end part in the first direction, the first fixed part 11 being connected to the first end part of the deformation part 13, and the second fixed part 12 being connected to the second end part of the deformation part 13;

[0051] A displacement sensor module, the displacement sensor module comprising at least one displacement sensor arranged outside the deformation part 13, the displacement sensor being connected to the first fixed part 11 and / or the second fixed part 12, when the deformation part 13 deforms in a second direction, the data of the displacement sensor changes accordingly;

[0052] The monitoring module is connected with the displacement sensor module, and is used for one or more operations of collecting, processing, storing and outputting data of the displacement sensor;

[0053] The second direction is the same as or different from the first direction.

[0054] In actual engineering applications, it is generally considered that the first fixed part 11 is located below the deformation part 13, and the second fixed part 12 is located above the deformation part 13, but the reverse is also applicable to the embodiment.

[0055] Since all the sensors are externally arranged outside the support, the sensors and the monitoring module can be installed after the installation of the isolation support, the sensors do not need to bear the high temperature and high pressure environment in the production process of the rubber isolation support, and damage and pollution of the sensing module and the monitoring module in the production, transportation and installation construction process of the support are avoided.

[0056] In addition, during the operation period of the isolation support of the building, when the support undergoes compression-shear hysteresis motion, the sensor is not subjected to the pressure and shear action of the support, and the durability of the sensor and the monitoring module is better.

[0057] In an embodiment of the present application, the displacement sensor module comprises a horizontal displacement sensor 22 and / or a vertical displacement sensor 21.

[0058] The vertical displacement sensor 21 has a vertical sensing fixed part and a vertical sensing detection part, the vertical sensing fixed part is connected with the first fixed part 11, and the vertical sensing detection part is connected with the second fixed part 12, the vertical sensing detection part can detect the distance between the vertical displacement sensor 21 and the second fixed part 12, or the vertical sensing fixed part is connected with the second fixed part 12, and the vertical sensing detection part is connected with the first fixed part 11, the vertical sensing detection part can detect the distance between the vertical displacement sensor 21 and the first fixed part 11.

[0059] The horizontal displacement sensor 22 has a horizontal sensing fixed part and a horizontal sensing detection part, the horizontal sensing fixed part is connected with the first fixed part 11, and the horizontal sensing detection part is directly or indirectly connected with the second fixed part 12, the horizontal sensing detection part can detect the distance between the horizontal displacement sensor 22 and the second fixed part 12.

[0060] The monitoring module calculates the deformation of the deformation part according to the distance detected by the vertical sensing detection part and / or the horizontal sensing detection part and the preset geometric relationship, and the deformation can be represented by calculating three-direction displacement.

[0061] Referring to Figures 1-4 In an embodiment of the present application, the displacement sensor module comprises a horizontal displacement sensor 22, and the displacement sensor module further comprises:

[0062] The first support 31 is connected with the first fixing part 11.

[0063] The second support 32 is connected with the second fixing part 12.

[0064] The horizontal sensing fixing part is indirectly connected with the first fixing part 11 through the first support 31, and the horizontal sensing detection part is indirectly connected with the second fixing part 12 through the second support 32, and the horizontal sensing detection part can detect the distance between the horizontal displacement sensor 22 and the second support 32.

[0065] The monitoring module calculates the deformation generated by the deformation part according to the distance detected by the horizontal sensing detection part and the preset geometric relationship.

[0066] The arrangement of the first support 31 and the second support 32 makes the sensor not directly contact with the isolation bearing body 1, and when the isolation bearing body 1 deforms, although the position of the sensor and / or the position of the second support 32 changes, the connection of the sensor and the second support 32 is not disturbed, and the sensor is not blocked by the isolation bearing body 1, and the measured data is still accurate and effective.

[0067] In an embodiment of the present application, the displacement sensor module includes two horizontal displacement sensors 22, and two first supports 31 corresponding to the two horizontal displacement sensors 22, respectively.

[0068] The first fixing part 11 includes a first fixing point 311 and a second fixing point 312, and the first fixing point 311 and the second fixing point 312 are not coincident, and the two first supports 31 are arranged at the first fixing point 311 and the second fixing point 312, respectively.

[0069] The second support 32 includes a detection point 322, the horizontal displacement sensor 22 is connected with the detection point 322, and the detection point 322 and the first fixing point 311 and the second fixing point 312 are located on the same side of the isolation bearing body 1.

[0070] The arrangement of the two horizontal displacement sensors 22 and the preset geometric relationship can measure the accurate displacement of the isolation bearing in the horizontal direction, and the geometric relationship between the points ensures that the deformation of the isolation bearing body 1 does not hinder the connection of the displacement sensor and the detection point 322, and the sensor measuring point does not contact or wind with the isolation bearing body 1, ensuring the accuracy of the monitoring result.

[0071] In an embodiment of the present application, the cross-sectional shape of the first fixing part 11 is rectangular, and the first fixing point 311 and the second fixing point 312 are located at two end points of the diagonal line of the rectangle, respectively.

[0072] The three points, at which the positions of the detection site 322 and the two horizontal displacement sensing parts project on the same plane parallel to the first fixed part 11, constitute three vertices of a right-angled triangle, the projected point corresponding to the detection site 322 is a right-angled vertex of the right-angled triangle, and the right-angled vertex is not located in the projection of the second fixed part 12 on the same plane parallel to the first fixed part 11.

[0073] In an embodiment of the present application, the detection site 322 and the two horizontal displacement sensing parts are located in the same plane parallel to the first fixed part 11.

[0074] It is worth noting that the above-mentioned geometric relationship is based on the case where the deformation part 13 has not been deformed. See Figure 2 After the deformation part 13 is deformed, the above-mentioned geometric relationship may continue to hold or may no longer hold. See Figure 3 .

[0075] In an embodiment of the present application, the displacement sensor is a pull-wire displacement sensor.

[0076] In an embodiment of the present application, the seismic isolation bearing body 1 is one or more of a lead-rubber seismic isolation bearing, a natural-rubber seismic isolation bearing, a high-damping rubber seismic isolation bearing, and an ultra-high-damping rubber seismic isolation bearing.

[0077] The following is a specific embodiment of the present application to assist in understanding the technical solutions of the present application, but does not limit the scope of protection of the present application. See Figures 1-5 In this specific embodiment, it includes:

[0078] The laminated rubber seismic isolation bearing (i.e., the bearing body 1) functions to prolong the period of the building structure and dissipate seismic energy;

[0079] The sensor module includes: one vertical displacement sensor 21, two horizontal displacement sensors 22, and the three displacement sensors are all pull-wire displacement sensors, the two horizontal displacement sensors 22 monitor the same point (i.e., the detection site 322), and the two horizontal displacement sensors 22 respectively feed back the values of the first deformation distance and the second deformation distance; and two first supports 31, one second support 32, in this embodiment, the first support 31 is fixed on the first fixed part 11 through the connecting bolt 33; by accurately designing the sizes and positions of the above-mentioned components, the installation of the sensor module is completed;

[0080] The monitoring module can calculate the horizontal displacement vector 4 representing the horizontal deformation of the deformation part 13 according to the preset geometric relationship and the first deformation distance and the second deformation distance;

[0081] Data acquisition and processing, storage system (ie monitoring module), wherein the data acquisition instrument 52 is responsible for the data perceived by the sensor sampling, processor 53 is responsible for the post-processing of the collected data, conversion into the required physical quantity and display; processor 53 can also send data to the cloud server 6, the function of the cloud is remote data storage, online monitoring, etc.

[0082] In an embodiment of the present application, the monitoring module can calculate the vertical load data of the seismic isolation support body 1 according to the pre-stored compression stiffness data and the data detected by the vertical sensing detection part.

[0083] In an embodiment of the present application, the monitoring module can calculate the deformation acceleration data of the seismic isolation support body 1 according to the data measured by the displacement sensor module.

[0084] In this embodiment, the sensor system composed of three pull wire displacement sensors and the data acquisition and processing system finally complete the vertical, horizontal displacement monitoring, three- direction acceleration monitoring, vertical load monitoring. The sensor arrangement and monitoring method includes the following parts:

[0085] 1. Horizontal displacement monitoring

[0086] Two horizontal displacement sensors 22 are arranged on two first supports 31 connected with the first fixed part 11. In order to avoid the contact between the detection point 322 and the rubber support body, and at the same time prevent the bending and winding of the sensor due to stretching, the first support 31 is provided. The movement range of the detection point 322 is divided by 4.5 times the total thickness of the rubber layer, but it can also be set to other values, and the deformation of the deformation part 13 should not interfere with the pull wire measurement of the sensor. The first fixed point 311 and the second fixed point 312 are fixed points, and the straight line segment length between the two fixed points is c. The detection point 322 moves in any direction horizontally with the deformation of the support. Assuming that the detection point 322 moves to the deformation point at a certain moment. At this time, the first deformation distance length is b, and the second deformation distance length is a. The straight line segment length c between the two fixed points is a fixed value, and the values of a and b are fed back in real time by the displacement sensor. Then, the displacement of the rubber support at this moment is the horizontal displacement vector 4.

[0087] The geometric relationship obtained from the above structure is shown in Figure 5 , where each marked point A, B, C, C1, and the line segment a, b, c are shown. In particular, the displacement vector corresponds to the horizontal displacement vector 4. Then, it satisfies the following relationship:

[0088] Given the lengths of the three sides of the triangle, the position of the C1 point can be accurately determined.

[0089] From the cosine theorem, it can be known that:

[0090] cos∠C1AB=(b 2 +c 2 -a 2 ) / 2bc,

[0091] cos∠ABC1=(a 2 +c 2 -b 2 ) / 2ac,

[0092] Then the angle:

[0093] ∠C1AB=arccos((b 2 +c 2 -a 2 ) / 2bc),

[0094] ∠ABC1=arccos((a 2 +c 2 -b 2 ) / 2ac),

[0095] ∠C1AC=|∠C1AB-45|,

[0096] ∠C1BC=|∠ABC1-45|,

[0097] Displacement Vector The component in the Y-axis direction is: CC1 Y =bsin(∠C1AC)

[0098] Displacement Vector The component in the X-axis direction is: CC1 X =asin(∠C1BC)

[0099] The absolute value of the displacement is:

[0100] Displacement Vector The angle with the X axis is ∠CC1A=arccos(CC1 X / |CC1)

[0101] When ∠ABC1>45°, the X-axis component of the displacement vector is positive; when ∠ABC1=45°, the X-axis component of the displacement vector is 0; when ∠ABC1<45°, the X-axis component of the displacement vector is negative. When ∠C1AB>45°, the Y-axis component of the displacement vector is positive; when ∠C1AB=45°, the Y-axis component of the displacement vector is 0; when ∠C1AB<45°, the Y-axis component of the displacement vector is negative.

[0102] The above steps can accurately implement the horizontal displacement monitoring of the rubber isolation bearing.

[0103] 2. Vertical displacement monitoring

[0104] In this embodiment, the vertical displacement sensor 21 is arranged on the first fixed part 11, the pull line end is connected with the second fixed part 12, and the pull rope is kept perpendicular to the horizontal plane in the initial state.

[0105] (1) When the horizontal displacement is 0, the reading of the displacement sensor in the initial state is z, and the vertical displacement sensor will produce a negative displacement with the compression of the rubber support. At this time, the monitoring record of the sensor can directly determine the vertical displacement of the support.

[0106] (2) When there is horizontal displacement, the reading value of the vertical displacement sensor 21 will increase, and the reading value of the vertical displacement sensor under the shear strain γ horizontal displacement is z(γ). Then the deformation amount under compression is

[0107]

[0108] 3. Vertical load monitoring

[0109] The vertical compression mechanical model of the laminated rubber support is a linear elastic model, as shown in Figure 6 , the linear elastic stiffness is the vertical compression stiffness Kv of the support. Kv takes the test measured value, and when the vertical displacement measured by the sensor is determined, the vertical load Fv at this time can be determined

[0110] F V = K V Δz,

[0111] Under the condition of lateral displacement, it is assumed that the horizontal shear strain is γ, the vertical compression stiffness will change, and the vertical load

[0112] F V (γ i ) = K V (γ i )Δz,

[0113]

[0114] is the vertical stiffness adjustment coefficient, γ takes 0, 25%, 50%, 75%, 100%, 125%, 150%, 175%, 200%, 225%, 250%, and the corresponding vertical compression stiffness K V (γ i ) is measured according to the shear strain grading described above, and the vertical stiffness adjustment coefficient under different shear strains is calibrated. The vertical compression stiffness adjustment coefficient not included in the above shear strain grading is valued by interpolation method. In the case of monitoring the vertical compression deformation amount Δz of the support, it is easy to realize the vertical load monitoring of the support.

[0115] 4. Acceleration monitoring

[0116] The displacement time curves in each direction, Dx(t), Dy(t), and Dz(t), are obtained by the displacement sensors, and the three-direction accelerations ax(t), ay(t), and az(t) of the support running are easily obtained after data processing on the displacement time curves.

[0117] In the embodiment, the technical scheme of the application has the following functions, features and advantages:

[0118] 1. With the aid of the three displacement sensors arranged in combination with the mechanical constitutive relation of the rubber support, data processing is performed to realize the monitoring of three-direction displacement, three-direction acceleration, and vertical load; the horizontal displacement monitoring is ingeniously achieved by using mathematical tools and the monitoring values of the sensors, and the vertical load monitoring is achieved by using the linear mechanical constitutive relation of the vertical compression of the laminated rubber support, so that the monitoring scheme is simple, easy to implement, reliable, and the monitoring system is easy to install and relatively economical in cost.

[0119] 2. All the sensors are externally arranged outside the support, so that the sensors and the monitoring system can be installed after the installation of the isolation support is completed, the sensors do not need to bear the high temperature and high pressure environment in the production process of the rubber isolation support, and the damage and pollution of the sensing system and the monitoring system in the production, transportation and installation construction process of the support are avoided.

[0120] 3. When the laminated rubber isolation support has a compression-shear hysteresis motion in the operation period of the building, the sensors are not affected by the pressure and shear of the support, and the durability of the sensors and the monitoring system is better.

[0121] 4. The sensor arrangement position is accurately calculated, and the movement range of the sensor is determined in the most extreme working condition, i.e., the initial measuring point is taken as the center, and the total thickness of the rubber layer is taken as the radius to determine the movement range of the sensor measuring point, so as to ensure that the sensor measuring point does not contact or wind the rubber support body, and ensure the accuracy of the monitoring results.

[0122] 5. All the sensors are externally arranged outside the support, and the sensors can be conveniently calibrated and daily maintained according to the regulations, and the sensors can be easily replaced when they are invalid. The internal sensing monitoring system arranged in the support cannot be regularly calibrated, and it is difficult to replace the sensors, which has great difficulty and cost.

[0123] It is to be noted that, as used in this specification and the appended claims, the singular forms "a," "an" and "the" include plural referents unless the context clearly dictates otherwise. Thus, for example, reference to "a component" can include a combination of two or more components, and the term "an element" can include comparable reference to a plurality of elements. Also, as used in this specification and the appended claims, the term "or" as used in the context of "A / B or C" means any of the following: A; B; or C. Also, the term "comprising" as used in the claims should not be interpreted as being restricted to the means listed thereafter; it does not exclude other elements or steps. It is thus to be interpreted as specifying the presence of the stated features, integers, steps or components as referred to, but does not preclude the presence or addition of one or more other features, integers, steps or components, or groups thereof. Moreover, it is to be noted that the term "even if" as used in this specification is not to be interpreted as indicating an exception to a previously recited condition or characteristic, but rather is to be interpreted as meaning "for example" or "for instance."

[0124] The foregoing is merely illustrative of the principles of this application and various modifications can be made by those skilled in the art, without departing from the spirit and scope of the application. Such modifications are intended to be within the scope of the claims.

Claims

1. A self-monitoring seismic isolation bearing, characterized by, The isolation bearing comprises: an isolation bearing body (1) having a first fixed part (11), a second fixed part (12), a deformation part (13) extending in a first direction, the deformation part (13) having a first end part and a second end part in the first direction, the first fixed part (11) being connected to the first end part of the deformation part (13), and the second fixed part (12) being connected to the second end part of the deformation part (13); a displacement sensor module comprising at least one displacement sensor arranged outside the deformation part (13), the displacement sensor being connected to the first fixed part (11) and / or the second fixed part (12), and the data of the displacement sensor changing correspondingly when the deformation part (13) deforms in a second direction, the second direction being the same as or different from the first direction; a monitoring module connected to the displacement sensor module, the monitoring module being configured to perform one or more of the following operations on the data of the displacement sensor: collection, processing, storage, and output; the displacement sensor module comprises two corresponding groups of horizontal displacement sensors (22), first supports (31), and second supports (32); one horizontal displacement sensor (22) is arranged on one first support (31), and the two horizontal displacement sensors (22) respectively feed back the values of a first deformation distance and a second deformation distance; the first fixed part (11) comprises a first fixed point (311) and a second fixed point (312), the first fixed point (311) is not coincident with the second fixed point (312), and two first supports (31) are respectively arranged at the first fixed point (311) and the second fixed point (312); the second support (32) is connected to the second fixed part (12), the second support (32) comprises a detection point (322), the horizontal displacement sensor (22) is connected to the detection point (322), and the detection point (322) and the first fixed point (311) and the second fixed point (312) are located on the same side of the isolation bearing body (1); the monitoring module calculates a horizontal displacement vector of the horizontal deformation of the deformation part (13) according to a preset geometric relationship and the first deformation distance and the second deformation distance; the displacement sensor module further comprises a vertical displacement sensor (21), the vertical displacement sensor (21) has a vertical sensor fixed part and a vertical sensor detection part, one of the vertical sensor fixed part and the vertical sensor detection part is connected to the first fixed part (11), and the other is connected to the second fixed part (12); the monitoring module calculates vertical load data of the isolation bearing body (1) according to pre-stored compression stiffness data and data detected by the vertical sensor detection part; the monitoring module calculates three-way acceleration data of the deformation of the isolation bearing body (1) according to the data measured by the displacement sensor module.

2. The isolation bearing of claim 1, wherein: The vertical displacement sensor (21) has a vertical sensor fixed part and a vertical sensor detection part, the vertical sensor fixed part is connected with the first fixed part (11), the vertical sensor detection part is connected with the second fixed part (12), the vertical sensor detection part can detect the distance between the vertical displacement sensor (21) and the second fixed part (12), or the vertical sensor fixed part is connected with the second fixed part (12), the vertical sensor detection part is connected with the first fixed part (11), the vertical sensor detection part can detect the distance between the vertical displacement sensor (21) and the first fixed part (11); The horizontal displacement sensor (22) has a horizontal sensor fixed part and a horizontal sensor detection part, the horizontal sensor fixed part is connected with the first fixed part (11), the horizontal sensor detection part is directly or indirectly connected with the second fixed part (12), the horizontal sensor detection part can detect the distance between the horizontal displacement sensor (22) and the second fixed part (12); The monitoring module calculates the deformation generated by the deformation part (13) according to the distance detected by the vertical sensor detection part and / or the horizontal sensor detection part and the preset geometric relationship.

3. The isolation bearing according to claim 2, wherein: The first fixed part (11) has a rectangular cross-sectional shape, and the first fixed site (311) and the second fixed site (312) are respectively located at two end points of opposite sides of the rectangle; The detection site (322), the two horizontal displacement sensor parts and the three points on the same plane parallel to the first fixed part (11) form three vertices of a right triangle, the projection point corresponding to the detection site (322) is the right vertex of the right triangle, and the right vertex is not located in the projection of the second fixed part (12) on the same plane parallel to the first fixed part (11).

4. The seismic isolation bearing of claim 3, wherein The detection site (322) and the two horizontal displacement sensor parts are located in the same plane parallel to the first fixed part (11).

5. The seismic isolation bearing of claim 1, wherein The displacement sensor is a pull-wire displacement sensor.

6. The seismic isolation bearing of claim 1, wherein The isolation bearing body (1) is one or more of a lead rubber isolation bearing, a natural rubber isolation bearing, a high-damping rubber isolation bearing and an ultra-high-damping rubber isolation bearing.

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