Isolation Rubber Bearing Deformation Monitoring Device and Method

Abstract

The present invention relates to the technical field of seismic isolation bearings, and in particular, to a deformation monitoring device and method for a seismic isolation rubber bearing. The planar detection substrate and the conical detection substrate of the deformation monitoring device for the seismic isolation rubber bearing are both connected to the rubber bearing body; the probes of the first displacement detection sensor and the probes of the second displacement detection sensor are respectively in contact with the planar detection substrate and the conical detection substrate; wherein, the surface of the planar detection substrate for contacting the probe of the first displacement detection sensor is a plane, and the surface of the conical detection substrate for contacting the probe of the second displacement detection sensor is a conical surface. The deformation monitoring device for the seismic isolation rubber bearing has a simple structure, can be installed and used together with the bearing, and can simultaneously monitor the vertical force and the shear force, so that it is convenient to understand the performance of the bearing and the damage condition after an earthquake during long-term use.

Description

Technical Field

[0001] The present invention relates to the technical field of seismic isolation bearings, and more particularly, to a device and method for monitoring the deformation of a seismic isolation rubber bearing. Background Art

[0002] A seismic isolation bearing refers to a support device provided to meet the requirements of seismic isolation in a structure. An isolation layer is added between the superstructure and the foundation, and a seismic isolation rubber bearing is installed to achieve a soft connection with the ground. Through such technology, about 80% of the earthquake energy can be offset. For example, a laminated rubber bearing (also known as a seismic isolation rubber bearing, sandwich rubber pad, etc.) is a structural member with relatively small horizontal stiffness and relatively large vertical stiffness, which can withstand large horizontal deformations and can be part of the load-bearing system.

[0003] Under normal circumstances, a seismic isolation rubber bearing (hereinafter referred to as "bearing") is subjected to a vertical pressure. When an earthquake occurs, due to ground movement, the bearing is simultaneously subjected to a vertical pressure or tension and a horizontal shear force. At this time, in addition to vertical compression or tension deformation, the bearing is also subjected to horizontal shear deformation. Generally, the service life of the bearing is the same as that of the building structure. In order to understand the performance of the bearing and the damage situation after an earthquake during long-term use, it is necessary to monitor the force and deformation of the bearing. Currently, the commonly used monitoring means is to set pressure sensors vertically to monitor the vertical force of the bearing, but it is difficult to monitor the lateral deformation and shear force. In the laboratory, displacement sensors and other measuring devices are usually set outside the bearing, but they cannot be installed and used together with the bearing in engineering applications. Summary of the Invention

[0004] The objectives of the present invention include, for example, providing a device and method for monitoring the deformation of a seismic isolation rubber bearing, which has a simple structure, can be installed and used together with the bearing, and can simultaneously monitor the vertical force and shear force, so as to facilitate understanding the performance of the bearing and the damage situation after an earthquake during long-term use.

[0005] The embodiments of the present invention can be implemented as follows:

[0006] In a first aspect, the present invention provides a device for monitoring the deformation of a seismic isolation rubber bearing, which includes a rubber bearing main body, a planar detection substrate, a conical detection substrate, a fixed box, a first displacement detection sensor, and a second displacement detection sensor;

[0007] Both the planar detection substrate and the conical detection substrate are connected to the rubber bearing main body, and the planar detection substrate and the conical detection substrate are arranged in parallel.

[0008] The fixed box is connected to the rubber bearing body and is located directly above the flat detection substrate and the conical surface detection substrate; the bodies of the first displacement detection sensor and the second displacement detection sensor are both accommodated in the fixed box, and the probes of the first displacement detection sensor and the second displacement detection sensor are respectively in contact with the flat detection substrate and the conical surface detection substrate;

[0009] Wherein, the surface of the flat detection substrate for contacting the probe of the first displacement detection sensor is a flat surface, and the surface of the conical surface detection substrate for contacting the probe of the second displacement detection sensor is a conical surface.

[0010] In an alternative embodiment, the probe of the first displacement detection sensor and the probe of the second displacement detection sensor are respectively in contact with the center of the flat detection substrate and the center of the conical surface detection substrate.

[0011] In an alternative embodiment, the rubber bearing body includes a substrate embedded steel plate, a fixed steel plate and a rubber layer, and the rubber layer is located between the substrate embedded steel plate and the fixed steel plate; the fixed box is connected to the fixed steel plate;

[0012] The substrate embedded steel plate is provided with two mounting holes for respectively mounting the flat detection substrate and the conical surface detection substrate, and the fixed steel plate and the rubber layer are provided with two through holes respectively communicating with the two mounting holes, and the two through holes respectively allow the probes of the first displacement detection sensor and the second displacement detection sensor to pass through.

[0013] In an alternative embodiment, both the first displacement detection sensor and the second displacement detection sensor are arranged in the vertical direction.

[0014] In an alternative embodiment, the deformation monitoring device for the seismic isolation rubber bearing further includes two first zero-adjusting mechanisms, both of the two first zero-adjusting mechanisms are connected to the fixed steel plate, and the two first zero-adjusting mechanisms are respectively connected to the body of the first displacement detection sensor and the body of the second displacement detection sensor, and are used to drive the body of the first displacement detection sensor and the body of the second displacement detection sensor to move in the vertical direction.

[0015] In an alternative embodiment, each first zero-adjusting mechanism includes a first movable block, a second movable block, a first adjusting block, a first positioning plate and a first adjusting rod;

[0016] Both the first movable block and the second movable block are slidably engaged with the first adjusting block, and are located on the upper and lower sides of the first adjusting block, and the sliding mating surfaces of the first movable block and the first adjusting block and the sliding mating surfaces of the second movable block and the first adjusting block are both inclined relative to the vertical direction; the first adjusting rod is rotatably connected to the first positioning plate and is threadedly connected to the first adjusting block, and the mating surfaces of the first adjusting block with the first movable block and the second movable block are symmetric with respect to the first adjusting rod;

[0017] The first adjusting rod is used to rotate relative to the first positioning plate under the action of an external force, so as to drive the first adjusting block to move relative to the first positioning plate, and further drive the first movable block to move in the vertical direction;

[0018] Wherein, the first movable block is connected to the body of the first displacement detection sensor or the body of the second displacement detection sensor.

[0019] In an alternative embodiment, both the first displacement detection sensor and the second displacement detection sensor are arranged in the horizontal direction.

[0020] In an alternative embodiment, the deformation monitoring device of the seismic isolation rubber bearing further includes two measurement commutation mechanisms and two second zero-adjusting mechanisms;

[0021] Both of the two second zero-adjusting mechanisms are connected to the fixed steel plate. Each measurement commutation mechanism is connected to one second zero-adjusting mechanism, and each second zero-adjusting mechanism is used to drive the corresponding measurement commutation mechanism to move in the vertical direction;

[0022] Each measurement commutation mechanism includes a commutation frame, a commutation plate and a measurement rod; the commutation frame is connected to the movable end of the corresponding second zero-adjusting mechanism; the two commutation frames are respectively connected to the body of the first displacement detection sensor and the body of the second displacement detection sensor;

[0023] The commutation plate is rotatably connected to the commutation frame, and the commutation plate includes a first measurement part and a second measurement part. The first measurement part and the second measurement part are arranged at an angle. The first measurement part contacts the probe of the first displacement detection sensor or the probe of the second displacement detection sensor; the measurement rod is arranged in the vertical direction, and one end of the measurement rod contacts the plane detection substrate or the conical surface detection substrate, and the other end of the measurement rod contacts the second measurement part.

[0024] In an alternative embodiment, each second zero-adjusting mechanism includes a third movable block, a fourth movable block, a second adjusting block, a second positioning plate and a second adjusting rod;

[0025] Both the third movable block and the fourth movable block are slidably matched with the second adjusting block, and are located on the upper and lower sides of the second adjusting block. The sliding mating surfaces between the third movable block and the second adjusting block and between the fourth movable block and the second adjusting block are both inclined relative to the vertical direction; the second adjusting rod is rotatably connected to the second positioning plate and is threadedly connected to the second adjusting block. The mating surfaces of the second adjusting block with the third movable block and the fourth movable block are symmetrical with respect to the second adjusting rod;

[0026] The second adjusting rod is used to rotate relative to the second positioning plate under the action of an external force, so as to drive the second adjusting block to move relative to the second positioning plate, and further drive the third movable block to move in the vertical direction;

[0027] Among them, the third movable block is connected to the body of the first displacement detection sensor or the body of the second displacement detection sensor.

[0028] In a second aspect, the present invention provides a method for monitoring the deformation of a seismic isolation rubber bearing, which is implemented by using the seismic isolation rubber bearing deformation monitoring device in any one of the foregoing embodiments, and includes:

[0029] Receiving the thickness change signal output by the first displacement detection sensor, which characterizes the thickness change of the rubber layer of the rubber bearing main body under the action of a vertical external force, and recording the thickness change measured by the first displacement detection sensor as ;

[0030] Receiving the displacement signal output by the second displacement detection sensor, which characterizes the vertical displacement generated by the horizontal movement of the measuring rod on the conical surface due to the shear deformation of the rubber layer of the rubber bearing main body under the action of a vertical external force and a horizontal external force, and recording the displacement measured by the second displacement detection sensor as S;

[0031] Obtaining the vertical displacement caused by the conical surface detection substrate under the action of a horizontal external force according to the thickness change amount ∆h measured by the first displacement detection sensor and the displacement amount S measured by the second displacement detection sensor , as shown in Formula 1;

[0032] (1)

[0033] Determining the horizontal displacement amount of the rubber layer according to the parameters of the conical surface detection substrate and the horizontal displacement amount of the rubber bearing main body under the action of a horizontal external force , as shown in Formula 2 and Formula 3 below;

[0034] (2)

[0035] (3)

[0036] Among them, H is the height difference of the conical surface of the conical surface detection substrate, and R is the radius of the conical surface detection substrate;

[0037] According to the thickness change amount of the rubber layer , the horizontal displacement amount of the rubber layer and the number of rubber layers N of the rubber bearing main body to obtain the overall deformation amount of the rubber bearing main body, as shown in Formula 4 and Formula 5;

[0038] (4)

[0039] (5)

[0040] Among them, is the vertical deformation amount of the rubber bearing main body, and L is the horizontal deformation amount of the rubber bearing main body;

[0041] According to the vertical deformation of the rubber bearing main body , and the horizontal deformation L of the rubber bearing main body, and combining the vertical force and deformation coefficient K1 of the rubber bearing main body and the shear force and shear deformation coefficient K2, the vertical force and horizontal external force of the rubber bearing main body are calculated, as shown in Formula 6 and Formula 7;

[0042] (6)

[0043] (7)

[0044] Among them, is the vertical force of the rubber bearing main body, is the horizontal external force of the rubber bearing main body.

[0045] The beneficial effects of the embodiments of the present invention include:

[0046] The seismic isolation rubber bearing deformation monitoring device includes a rubber bearing main body, a planar detection substrate, a conical detection substrate, a fixed box, a first displacement detection sensor, and a second displacement detection sensor; the planar detection substrate and the conical detection substrate are both connected to the rubber bearing main body, and the planar detection substrate and the conical detection substrate are arranged in parallel; the fixed box is connected to the rubber bearing main body and is located directly above the planar detection substrate and the conical detection substrate; the bodies of the first displacement detection sensor and the second displacement detection sensor are both accommodated in the fixed box, and the probes of the first displacement detection sensor and the probes of the second displacement detection sensor are respectively in contact with the planar detection substrate and the conical detection substrate; among them, the surface of the planar detection substrate for contacting the probe of the first displacement detection sensor is a plane, and the surface of the conical detection substrate for contacting the probe of the second displacement detection sensor is a conical surface. The seismic isolation rubber bearing deformation monitoring device has a simple structure, can be installed and used together with the bearing, and can simultaneously monitor the vertical force and shear force, so that it is convenient to understand the performance of the bearing and the damage situation after an earthquake during long-term use. Description of the Drawings

[0047] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0048] Figure 1 is a schematic structural diagram of the seismic isolation rubber bearing deformation monitoring device in the embodiments of the present invention;

[0049] Figure 2Schematic diagram of the first displacement detection sensor and the second displacement detection sensor in the embodiment of the present invention;

[0050] Figure 3 Exploded view of the seismic isolation rubber bearing deformation monitoring device in the embodiment of the present invention;

[0051] Figure 4 Schematic diagram of the structure of the substrate embedded steel plate, fixed steel plate and rubber layer in the embodiment of the present invention;

[0052] Figure 5 Schematic diagram of the structure of the first zero adjustment mechanism in the embodiment of the present invention;

[0053] Figure 6 Schematic diagram of the structure of the measurement commutation mechanism and the second zero adjustment mechanism in the embodiment of the present invention;

[0054] Figure 7 Schematic diagram of the structure of the measurement commutation mechanism in the embodiment of the present invention;

[0055] Figure 8 Schematic diagram of the probe moving on the conical surface of the conical surface detection substrate in the embodiment of the invention.

[0056] Icon: 100 - Seismic isolation rubber bearing deformation monitoring device; 110 - Rubber bearing main body; 120 - Plane detection substrate; 130 - Conical surface detection substrate; 140 - Fixed box; 150 - First displacement detection sensor; 160 - Second displacement detection sensor; 111 - Substrate embedded steel plate; 112 - Fixed steel plate; 113 - Rubber layer; 114 - Mounting hole; 115 - Through hole; 170 - First zero adjustment mechanism; 171 - First movable block; 172 - Second movable block; 173 - First adjustment block; 174 - First positioning plate; 175 - First adjustment rod; 180 - Measurement commutation mechanism; 190 - Second zero adjustment mechanism; 181 - Commutation frame; 182 - Commutation plate; 183 - Measurement rod; 184 - First measurement part; 185 - Second measurement part; 191 - Third movable block; 192 - Fourth movable block; 193 - Second adjustment block; 194 - Second positioning plate; 195 - Second adjustment rod. Detailed implementation manners

[0057] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0058] Accordingly, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0059] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0060] In the description of the present invention, it should be noted that if terms such as "upper", "lower", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship in which the product of the present invention is usually placed during use. It is only for the convenience of describing the present invention 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 thus should not be construed as a limitation to the present invention.

[0061] In addition, if terms such as "first", "second", etc. are used only for distinguishing descriptions, they cannot be understood as indicating or implying relative importance.

[0062] It should be noted that, without conflict, the features in the embodiments of the present invention can be combined with each other.

[0063] Please refer to Figures 1 - 3 , this embodiment provides a deformation monitoring device 100 for a seismic isolation rubber bearing. The deformation monitoring device 100 for a seismic isolation rubber bearing includes a rubber bearing main body 110, a planar detection substrate 120, a conical surface detection substrate 130, a fixed box 140, a first displacement detection sensor 150, a second displacement detection sensor 160, and a rubber layer 113;

[0064] Both the planar detection substrate 120 and the conical surface detection substrate 130 are connected to the rubber bearing main body 110, and the planar detection substrate 120 and the conical surface detection substrate 130 are arranged in parallel.

[0065] The fixed box 140 is connected to the rubber bearing main body 110 and is located directly above the planar detection substrate 120 and the conical surface detection substrate 130. The bodies of the first displacement detection sensor 150 and the second displacement detection sensor 160 are both accommodated in the fixed box 140, and the probes of the first displacement detection sensor 150 and the second displacement detection sensor 160 are in contact with the planar detection substrate 120 and the conical surface detection substrate 130 respectively.

[0066] Among them, the surface of the planar detection substrate 120 for contacting the probe of the first displacement detection sensor 150 is a plane, and the surface of the conical surface detection substrate 130 for contacting the probe of the second displacement detection sensor 160 is a conical surface.

[0067] Please refer to Figures 1 - 3 , the working principle of the deformation monitoring device 100 for the seismic isolation rubber bearing is as follows:

[0068] The deformation monitoring device 100 for the seismic isolation rubber bearing includes a rubber bearing main body 110, a planar detection substrate 120, a conical surface detection substrate 130, a fixed box 140, a first displacement detection sensor 150, a second displacement detection sensor 160, and a rubber layer 113; among them, during the installation process, by connecting the fixed box 140 to the rubber bearing main body 110, a space for accommodating the first displacement detection sensor 150 and the second displacement detection sensor 160 can be formed, and the planar detection substrate 120 and the conical surface detection substrate 130 are connected to the rubber bearing main body 110, and the planar detection substrate 120 and the conical surface detection substrate 130 are arranged in parallel; thus, after installing the first displacement detection sensor 150 and the second displacement detection sensor 160 in the fixed box 140 and directly above the planar detection substrate 120 and the conical surface detection substrate 130, the probes of the first displacement detection sensor 150 and the probes of the second displacement detection sensor 160 can be respectively in contact with the planar detection substrate 120 and the conical surface detection substrate 130, and further, the vertical translation and the horizontal translation of the rubber layer 113 under the action of vertical external force or horizontal external force can be detected by the first displacement detection sensor 150 and the second displacement detection sensor 160;

[0069] In summary, the deformation monitoring device 100 for the seismic isolation rubber bearing has a simple structure, can be installed and used together with the bearing, and can simultaneously monitor vertical force and shear force, so as to facilitate understanding the performance of the bearing and the damage situation after an earthquake during long-term use.

[0070] Furthermore, please refer to Figures 1 - 4 , in this embodiment, in order to improve the measurement accuracy and measurement range, therefore, the probes of the first displacement detection sensor 150 and the probes of the second displacement detection sensor 160 can be respectively in contact with the center of the planar detection substrate 120 and the center of the conical surface detection substrate 130. It should be noted that the positions where the probes of the first displacement detection sensor 150 and the probes of the second displacement detection sensor 160 are respectively in contact with the center of the planar detection substrate 120 and the center of the conical surface detection substrate 130 can be used as zero positions, so as to improve the calculation accuracy during the subsequent calculation of the deformation displacement of the rubber bearing main body 110.

[0071] When setting the rubber support body 110, in order to facilitate the first displacement detection sensor 150 and the second displacement detection sensor 160 to detect the displacement of the rubber support body 110 and improve the accuracy of the detection, the rubber support body 110 includes a substrate embedded steel plate 111, a fixed steel plate 112 and a rubber layer 113, and the rubber layer 113 is located between the substrate embedded steel plate 111 and the fixed steel plate 112; the fixed box 140 is connected to the fixed steel plate 112; it should be noted that when setting the substrate embedded steel plate 111, the fixed steel plate 112 and When the rubber layer 113 is formed, the substrate is embedded in the steel plate 111, the fixed steel plate 112 and the rubber layer 113 are located on the side of the rubber support body 110 close to the fixed box 140; and the substrate is embedded in the steel plate 111 to open two mounting holes 114 for mounting the plane detection substrate 120 and the conical detection substrate 130 respectively, and the fixed steel plate 112 and the rubber layer 113 are opened. Two through holes 115 are connected to the two mounting holes 114 respectively, and the two through holes 115 are respectively used for the probes of the first displacement detection sensor 150 and the second displacement detection sensor 160 to pass through.

[0072] Therefore, during use, the fixed box 140 can be connected to the fixed steel plate 112, so that during use, the fixed box 140 can protect the first displacement detection sensor 150 and the second displacement detection sensor 160. In addition, during the detection process, in order to ensure that the positions of the first displacement detection sensor 150 and the second displacement detection sensor 160 relative to the fixed steel plate 112 remain unchanged, the first displacement detection sensor 150 and the second displacement detection sensor 160 can be connected to the fixed steel plate 112 or to the fixed box 140.

[0073] It should be noted that, firstly, the fixing box 140 encloses the first displacement detection sensor 150 and the second displacement detection sensor 160 therein, and the fixing box 140 is rigidly connected to the fixing steel plate 112 by bolts, thereby being able to protect the first displacement detection sensor 150 and the second displacement detection sensor 160 and avoid affecting the engineering application and installation of the rubber bearing; secondly, the fixing box 140 is a part of the existing rubber bearing that is raised to enclose the first displacement detection sensor 150 and the second displacement detection sensor 160 therein, and when the strength of the fixing box 140 is sufficient, the addition of the fixing box 140 will not affect the original characteristics of the rubber bearing.

[0074] For further information, please refer to Figures 1 - 5, in this embodiment, when the first displacement detection sensor 150 and the second displacement detection sensor 160 are arranged, in order to enable the first displacement detection sensor 150 and the second displacement detection sensor 160 to detect the displacement of the center of the planar detection substrate 120 and the conical detection substrate 130 through the probe when the rubber layer 113 deforms, therefore, the first displacement detection sensor 150 and the second displacement detection sensor 160 can be arranged along the vertical direction. Thus, the main bodies of the first displacement detection sensor 150 and the second displacement detection sensor 160 can be connected to the fixing steel plate 112, and their probes pass through the through holes 115 in the fixing steel plate 112 and the rubber layer 113 and are in contact with the center of the planar detection substrate 120 and the conical detection substrate 130 respectively.

[0075] In addition, during the detection process, in order to adjust the positions of the first displacement detection sensor 150 and the second displacement detection sensor 160 in the vertical direction, therefore, the seismic isolation rubber bearing deformation monitoring device 100 further includes two first zero-adjusting mechanisms 170. The two first zero-adjusting mechanisms 170 are both connected to the fixing steel plate 112, and the two first zero-adjusting mechanisms 170 are respectively connected to the main body of the first displacement detection sensor 150 and the main body of the second displacement detection sensor 160 and are used to drive the main bodies of the first displacement detection sensor 150 and the second displacement detection sensor 160 to move in the vertical direction.

[0076] Specifically, each first zero-adjusting mechanism 170 includes a first movable block 171, a second movable block 172, a first adjusting block 173, a first positioning plate 174 and a first adjusting rod 175;

[0077] The first movable block 171 and the second movable block 172 are both slidably engaged with the first adjusting block 173 and are located on the upper and lower sides of the first adjusting block 173. The sliding mating surfaces of the first movable block 171 and the first adjusting block 173 and the sliding mating surfaces of the second movable block 172 and the first adjusting block 173 are both inclined relative to the vertical direction; the first adjusting rod 175 is rotatably connected to the first positioning plate 174 and is threadedly connected to the first adjusting block 173. The mating surfaces of the first adjusting block 173 with the first movable block 171 and the second movable block 172 are symmetric with respect to the first adjusting rod 175; the first adjusting rod 175 is used to rotate relative to the first positioning plate 174 under the action of an external force to drive the first adjusting block 173 to move relative to the first positioning plate 174, thereby driving the first movable block 171 to move in the vertical direction; wherein, the first movable block 171 is connected to the main body of the first displacement detection sensor 150 or the main body of the second displacement detection sensor 160.

[0078] Thus, during the adjustment process, by rotating the first adjustment rod 175, the first adjustment block 173 can be moved relative to the first positioning plate 174. Since the surfaces of the first adjustment block 173 that cooperate with the first movable block 171 and the second movable block 172 are inclined surfaces, the movement of the first adjustment block 173 relative to the first positioning plate 174 will drive the first movable block 171 and the second movable block 172 to move synchronously relative to the first positioning plate 174. Thus, the height of the first movable block 171 can be adjusted vertically, thereby adjusting the height of the body of the first displacement detection sensor 150 or the body of the second displacement detection sensor 160 connected to the first movable block 171.

[0079] Further, please refer to Figure 5 and Figure 6 , and in combination with Figures 1 - 4 , different from the above-described manner in which the first displacement detection sensor 150 and the second displacement detection sensor 160 are both arranged in the vertical direction, in other embodiments of the present invention, the first displacement detection sensor 150 and the second displacement detection sensor 160 are both arranged in the horizontal direction.

[0080] Based on this, when the first displacement detection sensor 150 and the second displacement detection sensor 160 are both arranged in the horizontal direction, their probes extend in the horizontal direction, and since the first displacement detection sensor 150 and the second displacement detection sensor 160 are connected to the fixed steel plate 112 or the fixed box 140 and are located above the center of the planar detection substrate 120 and the conical surface detection substrate 130, thus, in order to enable the probes of the first displacement detection sensor 150 and the second displacement detection sensor 160 to detect the deformation of the rubber layer 113 by contacting the center of the planar detection substrate 120 and the conical surface detection substrate 130, therefore, the deformation monitoring device 100 of the seismic isolation rubber bearing further includes two measurement reversing mechanisms 180 and two second zero-adjusting mechanisms 190; wherein, the function of the measurement reversing mechanism 180 is to enable the probe to indirectly contact the center of the planar detection substrate 120 and the conical surface detection substrate 130, so as to be able to detect the deformation of the rubber layer 113, and the second zero-adjusting mechanism 190 is used to adjust the height of the first displacement detection sensor 150 and the second displacement detection sensor 160 in the vertical direction, and its principle is the same as the working principle of the above-described first zero-adjusting mechanism 170, so it will not be elaborated here.

[0081] Specifically, when setting the measurement reversing mechanism 180 and the second zero-adjusting mechanism 190, both of the two second zero-adjusting mechanisms 190 are connected to the fixed steel plate 112, each measurement reversing mechanism 180 is connected to one second zero-adjusting mechanism 190, and each second zero-adjusting mechanism 190 is used to drive the corresponding measurement reversing mechanism 180 to move in the vertical direction;

[0082] Each measuring commutation mechanism 180 includes a commutation frame 181, a commutation plate 182 and a measuring rod 183; the commutation frame 181 is connected to the movable end of the corresponding second zero-adjusting mechanism 190; the two commutation frames 181 are respectively connected to the body of the first displacement detection sensor 150 and the body of the second displacement detection sensor 160;

[0083] The commutation plate 182 is rotatably connected to the commutation frame 181, and the commutation plate 182 includes a first measuring portion 184 and a second measuring portion 185. The first measuring portion 184 and the second measuring portion 185 are arranged at an angle. The first measuring portion 184 is in contact with the probe of the first displacement detection sensor 150 or the probe of the second displacement detection sensor 160; the measuring rod 183 is arranged in the vertical direction, and one end of the measuring rod 183 is in contact with the plane detection substrate 120 or the conical surface detection substrate 130, and the other end of the measuring rod 183 is in contact with the second measuring portion 185.

[0084] Thus, when the rubber layer 113 deforms, the plane detection substrate 120 or the conical surface detection substrate 130 will displace relative to the fixed steel plate 112 or the fixed box 140. The displacement of the plane detection substrate 120 or the conical surface detection substrate 130 facilitates triggering the displacement of the measuring rod 183. The displacement of the measuring rod 183 facilitates contacting with the second measuring portion 185, so that the commutation plate 182 rotates relative to the commutation frame 181. Thus, during the rotation of the commutation frame 181, the first measuring portion 184 will trigger the probe of the first displacement detection sensor 150 or the probe of the second displacement detection sensor 160, so that the first displacement detection sensor 150 or the second displacement detection sensor 160 can detect the displacement of the plane detection substrate 120 or the conical surface detection substrate 130, and further detect the deformation of the rubber layer 113.

[0085] Furthermore, please refer to Figures 1 - 7 When setting the second zero-adjusting mechanism 190, each second zero-adjusting mechanism 190 includes a third movable block 191, a fourth movable block 192, a second adjusting block 193, a second positioning plate 194 and a second adjusting rod 195;

[0086] Both the third movable block 191 and the fourth movable block 192 are slidably engaged with the second adjusting block 193, and are located on the upper and lower sides of the second adjusting block 193. The sliding mating surfaces between the third movable block 191 and the second adjusting block 193 and between the fourth movable block 192 and the second adjusting block 193 are both inclined with respect to the vertical direction. The second adjusting rod 195 is rotatably connected to the second positioning plate 194 and is threadedly connected to the second adjusting block 193. The mating surfaces of the second adjusting block 193 with the third movable block 191 and the fourth movable block 192 are symmetric with respect to the second adjusting rod 195. The second adjusting rod 195 is used to rotate relative to the second positioning plate 194 under the action of an external force, so as to drive the second adjusting block 193 to move relative to the second positioning plate 194, and further drive the third movable block 191 to move in the vertical direction. Among them, the third movable block 191 is connected to the body of the first displacement detection sensor 150 or the body of the second displacement detection sensor 160.

[0087] Thus, during the adjustment process, by rotating the second adjusting rod 195, the second adjusting block 193 can be moved relative to the second positioning plate 194. Since the mating surfaces of the second adjusting block 193 with the third movable block 191 and the fourth movable block 192 are inclined planes, the movement of the second adjusting block 193 relative to the second positioning plate 194 will drive the third movable block 191 and the fourth movable block 192 to move synchronously relative to the second positioning plate 194. Thus, the height of the third movable block 191 can be adjusted vertically, so as to adjust the height of the body of the first displacement detection sensor 150 or the body of the second displacement detection sensor 160 connected to the third movable block 191.

[0088] It should be noted that when the rubber layer 113 in the rubber bearing body 110 is subjected to an axial pressure, its thickness will change. Therefore, when the rubber bearing body 110 leaves the factory, the above-mentioned first displacement detection sensor 150, second displacement detection sensor 160 and their related measuring devices have been installed on the rubber bearing body 110. After the rubber bearing body 110 is installed on the building foundation, as the building construction progresses, the force applied to the rubber bearing body 110 will also become larger and larger. Correspondingly, the rubber layer 113 in the rubber bearing body 110 will also be compressed thinner, resulting in the zero points (measurement reference points) of the first displacement detection sensor 150 and the second displacement detection sensor 160 being changed, affecting the measurement range and measurement accuracy of the first displacement detection sensor 150 and the second displacement detection sensor 160. Therefore, in the above content, the first zero adjustment mechanism 170 and the second zero adjustment mechanism 190 are set, so that the deformation monitoring device 100 of the seismic isolation rubber bearing has the function of adjusting the measurement zero points (reference points) of the first displacement detection sensor 150 and the second displacement detection sensor 160.

[0089] In addition, if the thickness of the rubber layer 113 varies greatly, it will cause the deflection angle of the commutation plate 182 of the measurement commutation mechanism 180 to be too large when it is driven, and the measurement range will also be limited. Therefore, on the basis of setting the second zero-adjusting mechanism 190, during the construction process or after the construction is completed, the heights of the first displacement detection sensor 150 and the second displacement detection sensor 160 can be adjusted, and then the measurement commutation mechanism 180 can be adjusted to return it to the balanced position, so as to maximize the measurement range and effectively improve the measurement accuracy and sensitivity.

[0090] It should also be noted that when setting the first zero-adjusting mechanism 170 and the second zero-adjusting mechanism 190, they can adopt the same structural settings. Therefore, taking the settings of the first movable block 171, the second movable block 172, the first adjusting block 173, the first positioning plate 174 and the first adjusting rod 175 in the first zero-adjusting mechanism 170 as an example, a dovetail groove sliding fit structure can be set between the first movable block 171 and the second movable block 172 and the first adjusting block 173, so that the first movable block 171 and the second movable block 172 are precisely connected to the first adjusting block 173 through the dovetail groove and can slide. Furthermore, by rotating the first adjusting rod 175, the first movable block 171 can be driven to move up and down, thereby correcting the position change of the probe caused by the change in the rubber thickness during the installation process.

[0091] In addition, to facilitate driving the first adjusting rod 175 and the second adjusting rod 195 to rotate, the length of the first adjusting rod 175 and the second adjusting rod 195 can be extended, or an adjustment window can be opened on the box wall of the fixed box 140.

[0092] Furthermore, please refer to Figures 1 - 7 , based on the above content, the present invention also provides a method for monitoring the deformation of a seismic isolation rubber bearing, which is realized by using the seismic isolation rubber bearing deformation monitoring device 100 in any one of the foregoing embodiments, including:

[0093] Receiving the thickness change signal output by the first displacement detection sensor 150, which characterizes the thickness change amount of the rubber layer 113 under the vertical external force, and recording the thickness change amount measured by the first displacement detection sensor 150 as ;

[0094] Receiving the displacement signal output by the second displacement detection sensor 160, which characterizes the vertical displacement amount caused by the shear deformation of the rubber layer 113 under the vertical external force and the horizontal external force and then caused by the conical surface detection substrate 130, and recording the displacement amount measured by the second displacement detection sensor 160 as S;

[0095] According to the thickness change amount and the vertical displacement of the rubber layer 113 under the action of a horizontal external force is obtained from the displacement amount S measured by the second displacement detection sensor 160 , as shown in Equation 1;

[0096] (1)

[0097] The horizontal displacement amount of the shear deformation of the rubber layer 113 is determined according to the parameters of the conical surface detection substrate 130 and the horizontal displacement amount of the rubber bearing body 110 under the action of a horizontal external force , as shown in Equation 2 and Equation 3 below;

[0098] (2)

[0099] (3)

[0100] where H is the height difference of the conical surface of the conical surface detection substrate 130, and R is the radius of the conical surface detection substrate 130;

[0101] According to the thickness change amount of the rubber layer 113 , the horizontal displacement amount of the rubber layer 113 and the number N of the rubber layers 113 of the rubber bearing body 110, the overall deformation amount of the rubber bearing body 110 is obtained, as shown in Equation 4 and Equation 5;

[0102] (4)

[0103] (5)

[0104] where is the vertical deformation amount of the rubber bearing body 110, and L is the horizontal deformation amount of the rubber bearing body 110;

[0105] According to the vertical deformation amount of the rubber bearing body 110, and the horizontal deformation amount L of the rubber bearing body 110, and in combination with the vertical force and deformation coefficient K1 and the shear force and shear deformation coefficient K2 of the rubber bearing body 110, the vertical force and horizontal external force of the rubber bearing body 110 are calculated, as shown in Equation 6 and Equation 7;

[0106] (6)

[0107] (7)

[0108] where is the vertical force of the rubber bearing body 110, is the horizontal external force of the rubber bearing body 110.

[0109] It should be noted that the deformation monitoring method of the seismic isolation rubber bearing detects the vertical deformation and shear deformation of the rubber layer 113 when it is subjected to vertical tensile or compressive force or horizontal shear force. The first displacement detection sensor 150 and the second displacement detection sensor 160 are fixed on the fixed steel plate 112 or the fixed box 140, and the probes of the first displacement detection sensor 150 and the second displacement detection sensor 160 pass through the fixed steel plate 112 and the rubber layer 113 and contact the plane detection substrate 120 and the conical surface detection substrate 130. When the rubber layer 113 deforms, the probes of the first displacement detection sensor 150 and the second displacement detection sensor 160 transmit the deformation amount to the first displacement detection sensor 150 and the second displacement detection sensor 160. Thus, by detecting the deformation amounts of the vertical deformation and shear deformation of the rubber layer 113, the vertical tensile or compressive force or horizontal shear force is detected.

[0110] Based on the above-mentioned deformation monitoring device 100 of the seismic isolation rubber bearing, the steps of the deformation monitoring method of the seismic isolation rubber bearing are as follows:

[0111] When the rubber bearing main body 110 is subjected to the combined action of vertical force and horizontal shear force, it is detected that the thickness of the rubber layer 113 changes due to the action of tension or pressure, and the changes of the first displacement detection sensor 150 and the second displacement detection sensor 160 are both ; when the rubber bearing main body 110 is subjected to shear force, the rubber bearing main body 110 undergoes horizontal deformation, and each layer of rubber undergoes horizontal dislocation. At this time, the rubber layer 113 located between the substrate embedded steel plate 111 and the fixed steel plate 112 also undergoes horizontal deformation, resulting in horizontal dislocation between the fixed steel plate 112 and the substrate embedded steel plate 111, driving the two probes pressing on the plane detection substrate 120 and the conical surface detection substrate 130 to move horizontally. At this time, the probe of the first displacement detection sensor 150 corresponding to the plane detection substrate 120 translates in the plane, and the measured value remains unchanged. The probe of the first displacement detection sensor 150 corresponding to the conical surface detection substrate 130 slides from the low point A of the conical surface to the conical surface point B, as Figure 8 shown; due to the change in the conical surface height, the value of the conical surface sensor changes to ;

[0112] Due to the change in the vertical compressive (tensile) force of the rubber bearing main body 110, the readings of the first displacement detection sensor 150 and the second displacement detection sensor 160 both show a change of compared with when the rubber bearing main body 110 is not stressed. This value can be measured by the first displacement detection sensor 150 placed on the plane detection substrate 120 regardless of whether horizontal dislocation occurs. This value is the deformation amount of the rubber layer 113 caused by the change in the vertical force of the rubber bearing main body 110.

[0113] The horizontal displacement of the rubber bearing body 110 causes the probe of the second displacement detection sensor 160 located on the conical surface detection substrate 130 to slide on the conical surface. At this time, the difference S between the reading of the second displacement detection sensor 160 and the reading of the second displacement detection sensor 160 in the initial state of the rubber bearing body 110 includes the change in rubber thickness caused by the vertical force , and also includes the height difference of the sliding on the conical surface , where the value S can be obtained through the second displacement detection sensor 160 placed on the conical surface detection substrate 130 and can be obtained through the first displacement detection sensor 150 placed on the plane detection substrate 120;

[0114] (1)

[0115] Determine the horizontal displacement of the shear deformation of the rubber layer 113 according to the parameters of the conical surface detection substrate 130 and the horizontal displacement of the rubber bearing body 110 under the action of the horizontal external force , as shown in Formula 2 and Formula 3 below;

[0116] (2)

[0117] (3)

[0118] Where, H is the height difference of the conical surface of the conical surface detection substrate 130, and R is the radius of the conical surface detection substrate 130; both of these parameters are obtained during the design of the conical surface detection substrate 130;

[0119] If the rubber of the rubber layer 113 located between the substrate embedded steel plate 111 and the fixed steel plate 112 is of the same material as the other rubber layers of the rubber bearing body 110, the overall deformation of the rubber bearing can be approximately obtained through the number N of the rubber layers 113 of the rubber bearing body 110: Specifically, according to the thickness change of the rubber bearing body 110 , the horizontal displacement of the rubber bearing body 110 and the number N of the rubber layers 113 of the rubber bearing body 110 to obtain the overall deformation of the rubber bearing body 110, as shown in Formula 4 and Formula 5;

[0120] (4)

[0121] (5)

[0122] Where, is the vertical deformation of the rubber bearing body 110, and L is the horizontal deformation of the rubber bearing body 110;

[0123] According to the vertical deformation of the rubber bearing body 110 and the horizontal deformation amount L of the rubber bearing body 110, and in combination with the vertical force and deformation coefficient K1 and the shear force and shear deformation coefficient K2 of the rubber bearing body 110, the vertical force and the horizontal external force of the rubber bearing body 110 are calculated, as shown in Formula 6 and Formula 7;

[0124] (6)

[0125] (7)

[0126] Among them, is the vertical force of the rubber bearing body 110, is the horizontal external force of the rubber bearing body 110.

[0127] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A deformation monitoring device for a seismic isolation rubber bearing, characterized in that: The deformation monitoring device for the seismic isolation rubber bearing includes a rubber bearing main body, a planar detection substrate, a conical detection substrate, a fixed box, a first displacement detection sensor, and a second displacement detection sensor; The planar detection substrate and the conical detection substrate are both connected to the rubber bearing main body, and the planar detection substrate and the conical detection substrate are arranged in parallel; The fixed box is connected to the rubber bearing main body and is located directly above the planar detection substrate and the conical detection substrate; The bodies of the first displacement detection sensor and the second displacement detection sensor are both accommodated in the fixed box, and the probes of the first displacement detection sensor and the probes of the second displacement detection sensor are respectively in contact with the planar detection substrate and the conical detection substrate; Wherein, the surface of the planar detection substrate for contacting the probe of the first displacement detection sensor is a plane, and the surface of the conical detection substrate for contacting the probe of the second displacement detection sensor is a conical surface; The probe of the first displacement detection sensor and the probe of the second displacement detection sensor are respectively in contact with the center of the planar detection substrate and the center of the conical detection substrate; The rubber bearing main body includes a substrate embedded steel plate, a fixed steel plate, and a rubber layer. The rubber layer is located between the substrate embedded steel plate and the fixed steel plate; the fixed box is connected to the fixed steel plate; The substrate embedded steel plate is provided with two mounting holes for respectively mounting the planar detection substrate and the conical detection substrate. The fixed steel plate and the rubber layer are provided with two through holes respectively communicating with the two mounting holes. The two through holes respectively allow the probes of the first displacement detection sensor and the second displacement detection sensor to pass through; The first displacement detection sensor and the second displacement detection sensor are both arranged in the vertical direction; The deformation monitoring device for the seismic isolation rubber bearing further includes two first zero adjustment mechanisms. The two first zero adjustment mechanisms are both connected to the fixed steel plate, and the two first zero adjustment mechanisms are respectively connected to the bodies of the first displacement detection sensor and the second displacement detection sensor and are used to drive the bodies of the first displacement detection sensor and the second displacement detection sensor to move in the vertical direction; Each first zero adjustment mechanism includes a first movable block, a second movable block, a first adjustment block, a first positioning plate, and a first adjustment rod; The first movable block and the second movable block are both slidably matched with the first adjustment block and are located on the upper and lower sides of the first adjustment block. The sliding mating surfaces of the first movable block and the first adjustment block and the sliding mating surfaces of the second movable block and the first adjustment block are both inclined relative to the vertical direction; the first adjustment rod is rotatably connected to the first positioning plate and is threadedly connected to the first adjustment block. The mating surfaces of the first adjustment block with the first movable block and the second movable block are symmetric with respect to the first adjustment rod; The first adjusting rod is used to rotate relative to the first positioning plate under the action of an external force, so as to drive the first adjusting block to move relative to the first positioning plate, and further drive the first movable block to move in the vertical direction; Wherein, the first movable block is connected to the body of the first displacement detection sensor or the body of the second displacement detection sensor.

2. A deformation monitoring device for a seismic isolation rubber bearing, characterized in that: The deformation monitoring device for the seismic isolation rubber bearing includes a rubber bearing main body, a plane detection substrate, a conical surface detection substrate, a fixed box, a first displacement detection sensor and a second displacement detection sensor; The plane detection substrate and the conical surface detection substrate are both connected to the rubber bearing main body, and the plane detection substrate and the conical surface detection substrate are arranged in parallel; The fixed box is connected to the rubber bearing main body and is located directly above the plane detection substrate and the conical surface detection substrate; The bodies of the first displacement detection sensor and the second displacement detection sensor are both accommodated in the fixed box, and the probes of the first displacement detection sensor and the probes of the second displacement detection sensor are respectively in contact with the plane detection substrate and the conical surface detection substrate; Wherein, the surface of the plane detection substrate for contacting the probe of the first displacement detection sensor is a plane, and the surface of the conical surface detection substrate for contacting the probe of the second displacement detection sensor is a conical surface; The probe of the first displacement detection sensor and the probe of the second displacement detection sensor are respectively in contact with the center of the plane detection substrate and the center of the conical surface detection substrate; The rubber bearing main body includes a substrate embedded steel plate, a fixed steel plate and a rubber layer, and the rubber layer is located between the substrate embedded steel plate and the fixed steel plate; the fixed box is connected to the fixed steel plate; The substrate embedded steel plate is provided with two mounting holes for respectively mounting the plane detection substrate and the conical surface detection substrate, and the fixed steel plate and the rubber layer are provided with two through holes respectively communicating with the two mounting holes, and the two through holes respectively allow the probes of the first displacement detection sensor and the second displacement detection sensor to pass through; The first displacement detection sensor and the second displacement detection sensor are both arranged in the horizontal direction; The deformation monitoring device for the seismic isolation rubber bearing further includes two measurement commutation mechanisms and two second zero adjustment mechanisms; Both of the two second zero adjustment mechanisms are connected to the fixed steel plate, each measurement commutation mechanism is connected to one of the second zero adjustment mechanisms, and each second zero adjustment mechanism is used to drive the corresponding measurement commutation mechanism to move in the vertical direction; Each measurement commutation mechanism includes a commutation frame, a commutation plate and a measurement rod; the commutation frame is connected to the movable end of the corresponding second zero adjustment mechanism; the two commutation frames are respectively connected to the body of the first displacement detection sensor and the body of the second displacement detection sensor; The commutation plate is rotatably connected to the commutation frame, and the commutation plate includes a first measurement portion and a second measurement portion. The first measurement portion and the second measurement portion are arranged at an angle. The first measurement portion contacts the probe of the first displacement detection sensor or the probe of the second displacement detection sensor; the measuring rod is arranged in the vertical direction, and one end of the measuring rod contacts the flat detection substrate or the conical surface detection substrate, and the other end of the measuring rod contacts the second measurement portion; Each of the second zero adjustment mechanisms includes a third movable block, a fourth movable block, a second adjustment block, a second positioning plate, and a second adjustment rod; The third movable block and the fourth movable block are both slidably matched with the second adjustment block and are located on the upper and lower sides of the second adjustment block. The sliding mating surfaces of the third movable block and the second adjustment block and the sliding mating surfaces of the fourth movable block and the second adjustment block are both inclined relative to the vertical direction; the second adjustment rod is rotatably connected to the second positioning plate and is threadedly connected to the second adjustment block. The mating surfaces of the second adjustment block with the third movable block and the fourth movable block are symmetrical with respect to the second adjustment rod; The second adjustment rod is used to rotate relative to the second positioning plate under the action of an external force to drive the second adjustment block to move relative to the second positioning plate, and further drive the third movable block to move in the vertical direction; Wherein, the third movable block is connected to the body of the first displacement detection sensor or the body of the second displacement detection sensor.

3. A deformation monitoring method for a seismic isolation rubber bearing, which is realized by using the deformation monitoring device for a seismic isolation rubber bearing as described in claim 1 or 2, characterized in that Including: Receive the thickness change signal output by the first displacement detection sensor, which characterizes the thickness change of the rubber layer under the action of the vertical external force, and record the thickness change measured by the first displacement detection sensor as ; Receiving the displacement signal output by the second displacement detection sensor, which characterizes the vertical displacement generated by the horizontal movement of the measuring rod on the conical surface caused by the shear deformation of the rubber layer under the action of vertical external force and horizontal external force on the rubber layer, and recording the displacement measured by the second displacement detection sensor as S; The thickness change measured by the first displacement detection sensor and the displacement S measured by the second displacement detection sensor are used to obtain the vertical displacement caused by the conical surface detection substrate under the action of the horizontal external force , as shown in Formula 1; (1) Determine the horizontal displacement of the rubber layer based on the parameters of the conical surface detection substrate and the horizontal displacement of the rubber layer of the rubber bearing body under the action of a horizontal external force , as shown in Formula 2 and Formula 3 below; (2) (3) Wherein, H is the height difference of the conical surface of the conical surface detection substrate, and R is the radius of the conical surface detection substrate; According to the thickness change amount of the rubber layer , the horizontal displacement amount of the rubber layer and the number of rubber layers N of the rubber bearing body, the overall deformation amount of the rubber bearing body is obtained, as shown in Formula 4 and Formula 5; (4) (5) Wherein, is the vertical deformation of the rubber bearing body, and L is the horizontal deformation of the rubber bearing body; According to the vertical deformation of the rubber bearing body , and the horizontal deformation L of the rubber bearing body, combined with the vertical force and deformation coefficient K1 and the shear force and shear deformation coefficient K2 of the rubber bearing body, the vertical force and horizontal external force of the rubber bearing body are calculated as shown in Formula 6 and Formula 7; (6) (7) Among them, is the vertical force on the rubber bearing body, is the horizontal external force on the rubber bearing body.

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