Reinforced shock insulation support and construction method

Abstract

The reinforced shock insulation support comprises a support body and a supporting assembly, the support body is provided with an upper connecting steel plate and a lower connecting steel plate, the upper connecting steel plate and the lower connecting steel plate are arranged side by side at intervals, the supporting assembly is arranged between the upper connecting plate and the lower connecting plate, and set pre-tightening force is applied to the supporting assembly. When the set vertical vibration amplitude is reached, the set pre-tightening force drives the supporting assembly to open and support the support main body; according to the reinforced shock insulation support, in an earthquake, the lateral instability condition of the shock insulation support due to the fact that horizontal displacement exceeds a critical value can be reduced, the overall overturning risk of the structure is reduced, the service life of the shock insulation support is prolonged, the shock insulation structure is more stable and high in applicability, and the safety of a building superstructure in the earthquake process is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of seismic isolation, and particularly to a reinforced seismic isolation bearing and a construction method thereof. Background Art

[0002] As an important natural disaster, an earthquake has characteristics such as suddenness and unpredictability, and has great destructive power to buildings. Traditional seismic design resists seismic forces by enhancing the structural strength, but the cost is high and the effect is limited. Since the mid-20th century, seismic isolation technology has gradually emerged and been widely applied. Among them, seismic isolation bearings are widely used. As the mainstream seismic isolation bearing, the laminated rubber bearing is installed between the upper structure of a building and the foundation. Through the alternating lamination of steel plates and rubber layers, and by utilizing the characteristics of the low horizontal stiffness and high vertical stiffness of rubber, seismic energy is absorbed through shear deformation, thereby reducing the natural vibration frequency of the building, and it is the "invisible shield" for building earthquake resistance.

[0003] In the prior art, the laminated rubber bearing includes a natural rubber seismic isolation bearing, a lead-core rubber seismic isolation bearing, a high-damping rubber seismic isolation bearing, etc. However, the performance defects of the laminated rubber bearing under extreme loads gradually emerge. Since there is only a cylindrically laminated steel plate and rubber layer between the upper connecting steel plate and the lower connection of the laminated rubber bearing, and there is no support around the cylinder, the seismic isolation bearing may experience lateral instability due to the horizontal displacement exceeding the critical value (such as the 300 mm limit specified in the code) during an earthquake, resulting in the risk of overall structural overturning. Moreover, if only relying on the viscoelastic energy dissipation of rubber, it is impossible to adapt to the complex seismic motion spectrum characteristics, especially the problem of insufficient energy dissipation is likely to occur under long-period seismic waves.

[0004] Therefore, there is an urgent need to develop a seismic isolation bearing which, during an earthquake, can reduce the lateral instability of the seismic isolation bearing due to the horizontal displacement exceeding the critical value, reduce the risk of overall structural overturning, improve the service life of the seismic isolation bearing, make the seismic isolation structure more stable, have strong applicability, and improve the safety of the upper structure of the building during an earthquake. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a reinforced seismic isolation bearing and a construction method thereof, which can reduce the lateral instability of the seismic isolation bearing due to the horizontal displacement exceeding the critical value during an earthquake, reduce the risk of overall structural overturning, improve the service life of the seismic isolation bearing, make the seismic isolation structure more stable, have strong applicability, and improve the safety of the upper structure of the building during an earthquake.

[0006] The enhanced seismic isolation bearing of the present invention comprises a bearing main body and a support assembly. An upper connecting steel plate and a lower connecting steel plate which are arranged side by side and at intervals are provided on the bearing main body. The support assembly is arranged between the upper connecting plate and the lower connecting plate and is applied with a set pre-tightening force. When the set vertical vibration amplitude is reached, the set pre-tightening force drives the support assembly to expand and provide support for the bearing main body.

[0007] Furthermore, there are multiple support assemblies which are arranged around the bearing main body.

[0008] Furthermore, the support assembly includes two support frames arranged side by side. Each support frame includes two support rods arranged in an X shape. The two support rods are hinged at the intersection to form the support frame.

[0009] Furthermore, mounting holes are respectively provided at the end portions of the support rods. The mounting holes on the two support frames are directly opposite to each other and are penetrated by a rotating shaft. An annular mounting position is provided in the middle of the rotating shaft, and rollers are provided at both ends of the rotating shaft.

[0010] Furthermore, an elastic member for applying the set pre-tightening force is provided between the rotating shafts. The elastic member is a tension spring and its two ends are looped on the annular mounting positions.

[0011] Furthermore, the support frames are connected by a pin shaft, and the pin shaft is connected at the hinge of the support rods.

[0012] Furthermore, guide grooves for the rollers to roll are provided on the upper connecting steel plate and the lower connecting steel plate. The guide grooves include an inclined section and a straight section.

[0013] Furthermore, the inclined section is located in the middle of the guide groove and its cross section is V-shaped. The straight sections are located at both ends of the inclined section and have the same length.

[0014] Furthermore, the inclination angles on both sides of the V-shaped inclined section are 3° to 5°.

[0015] The present invention also discloses a construction method for an enhanced seismic isolation bearing, which is characterized by comprising the following steps:

[0016] S1: Construction of the lower layer main body and the lower pier steel bars;

[0017] S2: Installation of the seismic isolation bearing;

[0018] S3: After the installation of the seismic isolation bearing is completed, a plurality of jacks located between the upper connecting steel plate and the lower connecting steel plate are placed around the bearing main body;

[0019] S4: Use the jacks to support so that the rollers on the rotating shaft enter the guide grooves on the upper connecting steel plate and the guide grooves on the lower connecting steel plate;

[0020] S5: After the roller slides into the guiding groove, the on-site personnel manually adjust the support frame to make it located at the V-shaped inclined section, and compress the elastic member to obtain a set pre-tightening force.

[0021] S6: After all the support frames are adjusted, the jack is withdrawn, and the upper connecting steel plate and the lower connecting steel plate tightly press the support frame through the guiding groove.

[0022] Advantages of the present invention: The enhanced seismic isolation bearing and construction method of the present invention can reduce the lateral instability of the seismic isolation bearing caused by the horizontal displacement exceeding the critical value during an earthquake, reduce the overall overturning risk of the structure, increase the service life of the seismic isolation bearing, make the seismic isolation structure more stable, have strong applicability, and improve the safety of the upper structure of the building during an earthquake. Description of the Drawings

[0023] The present invention will be further described below in conjunction with the drawings and embodiments:

[0024] Figure 1 is the structural schematic diagram of the present invention Figure Ⅰ ;

[0025] Figure 2 is the structural schematic diagram of the present invention Figure Ⅱ ;

[0026] Figure 3 is Figure 1 the partial enlarged view of

[0027] Figure 4 is the schematic diagram of the support assembly of the present invention;

[0028] Figure 5 is Figure 4 the partial enlarged view of Detailed Embodiments

[0029] The technical solutions in the present application will be clearly and completely described below with reference to the accompanying drawings in the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The components of the present application usually described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application claimed, but only represents the selected embodiments of the present application. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative efforts belong to the scope of protection of the present application. It should be noted that: similar reference numerals and letters indicate similar 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. At the same time, in the description of the present application, terms such as "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0030] Figure 1 Structural schematic of the present invention Figure Ⅰ , Figure 2 Structural schematic of the present invention Figure Ⅱ , Figure 3 is Figure 1 partial enlarged view of Figure 4 Schematic diagram of the support component of the present invention Figure 5 is Figure 4Partial enlarged view, as shown in the figure: The enhanced seismic isolation bearing of this embodiment includes a bearing body 1 and a support assembly. The bearing body 1 is provided with an upper connecting steel plate 2 and a lower connecting steel plate 3 that are arranged side by side and at intervals with the upper connecting steel plate 2. The support assembly is arranged between the upper connecting plate and the lower connecting plate and is applied with a set pre-tightening force. When the set vertical vibration amplitude is reached, the set pre-tightening force drives the support assembly to expand and provide support for the bearing body 1; The bearing body 1 can adopt natural rubber seismic isolation bearings, lead core rubber seismic isolation bearings, high-damping rubber seismic isolation bearings, etc., which will not be elaborated here. In this application, the bearing body 1 selects a natural rubber seismic isolation bearing, which is composed of multiple layers of rubber and steel plates stacked alternately. The rubber layer provides elastic support, and the steel plate layer enhances the vertical stiffness and structural stability; The upper connecting steel plate 2 is located at the top of the bearing body 1 and is directly connected to the upper structure of the building (such as beams, columns, etc.). The lower connecting steel plate 3 is located at the bottom of the bearing body 1 and is fixedly connected to the building foundation or the lower structure (such as the foundation, pier, etc.). The vertical load of the upper structure of the building (such as the self-weight of the building, live load, etc.) is transmitted to the foundation through the upper connecting steel plate 2 and the lower connecting steel plate 3, and at the same time, it bears the horizontal shear force during an earthquake. The upper connecting steel plate 2 and the lower connecting steel plate 3 are connected through the support assembly, and the support assembly can provide additional support force during vertical vibration; Since the bearing body 1 is a natural rubber seismic isolation bearing and rubber is a highly elastic polymer material with reversible deformation, during an earthquake, the bearing body 1 will undergo a certain amount of deformation in the vertical direction. The deformation that the bearing body 1 undergoes vertically during vibration causes a gap to appear between the support assembly and the upper connecting steel plate 2 and the lower connecting steel plate 3. The support assembly expands through the set pre-tightening force to provide support for the bearing body 1, which is the set vertical vibration amplitude; Specifically, this technical solution can provide additional support force during vertical vibration by setting the support assembly and applying a pre-tightening force between them, thereby reducing the lateral instability condition of the bearing body 1 caused by the horizontal displacement exceeding the critical value.

[0031] In this embodiment, there are multiple support assemblies and they are arranged around the bearing body 1; The upper connecting steel plate 2 and the lower connecting steel plate 3 can be rectangular or circular, and can be specifically selected according to the upper structure and the lower structure of the building, which will not be elaborated here; In this application, the upper connecting steel plate 2 and the lower connecting steel plate 3 are rectangular. There are multiple support assemblies and they are arranged around the bearing body 1. The support assemblies are arranged between the four rectangular sides of the upper connecting steel plate 2 and the lower connecting steel plate 3, that is, there are four support assemblies, which can provide support for the bearing body 1 to the greatest extent, and can also bypass components such as bolts on the upper connecting steel plate 2 and the lower connecting steel plate 3 to avoid interference.

[0032] In this embodiment, the support assembly includes two support frames arranged in parallel. Each support frame includes two support rods 5 arranged in an X shape. The two support rods 5 are hinged at the intersection to form the support frame. Specifically, mounting holes are respectively provided at the ends of the support rods 5. The mounting holes on the two support frames are facing each other and penetrated by a rotating shaft 8. An annular mounting position 6 is provided in the middle of the rotating shaft 8, and rollers 7 are provided at both ends of the rotating shaft. The support frames of the support assembly are connected by the support rods 5 arranged in an X shape and the rotating shaft 8, and can flexibly adjust the support angle during vibration, further enhancing the stability of the bearing. The design of the mounting holes enables the support rods 5 to be connected through the rotating shaft 8. An annular mounting position 6 is provided in the middle of the rotating shaft 8, and this annular mounting position 6 is used to fix the elastic member. The elastic member applies a pre-tightening force through the annular mounting position 6, so as to ensure that the support frame can be effectively expanded and provide additional support when the set vertical vibration amplitude is reached. As a preferred implementation manner, the mounting holes can be designed as circular or elliptical to meet different installation requirements. The material of the rotating shaft 8 can be selected as high-strength steel to improve its durability and stability. Thus, the technical solution of this application realizes the effective connection between the support frames by setting the mounting holes and the rotating shaft 8, and fixes the elastic member through the annular mounting position 6, ensuring that the support frame can be stably expanded during vibration, so as to provide additional supporting force. Compared with the prior art, this solution not only improves the stability of the seismic isolation bearing, but also simplifies the installation process and enhances the reliability of the overall structure.

[0033] The technical solution of this application enables the support frame to be quickly expanded when the set vertical vibration amplitude is reached by setting the X-shaped support rods 5 and hinged connection, so as to provide additional support for the bearing body 1. Specifically, the setting of the mounting holes of the support rods 5 and the rotating shaft 8 enables the support frame to rotate flexibly, further enhancing the stability of the support. Through the pre-tightening force setting of the elastic member, the rapid response and effective support of the support frame during vibration are ensured. The design of the rollers 7 and the guide grooves 9 enables the support frame to roll smoothly during vibration, further improving the seismic performance of the seismic isolation bearing.

[0034] In this embodiment, an elastic member for applying the set preload is provided between the rotating shafts 8, and the elastic member is a tension spring 10 and its two ends are buckled on the annular mounting position 6; the support frames are connected by a pin 4, and the pin 4 is connected at the hinge of the support rod 5; the upper connecting steel plate 2 and the lower connecting steel plate 3 are provided with guide grooves 9 for the roller 7 to roll, and the guide grooves 9 include an inclined section and a straight section; thus, rollers 7 are provided at both ends of the rotating shaft 8, and the upper connecting steel plate 2 and the lower connecting steel plate 3 are provided with guide grooves 9 for the roller 7 to roll, wherein the guide grooves 9 include an inclined section 902 and a straight section 901, and the design of the roller 7 and the guide grooves 9 on the rotating shaft 8 enables the support frame to move smoothly during vibration, reduces friction and wear, and extends the service life of the support; the elastic member realizes the application of the preload in the form of a tension spring 10, and the two ends of the tension spring 10 are respectively buckled on the annular mounting position 6 of the rotating shaft 8, thereby ensuring the stable transmission of the preload. As a preferred embodiment, the material of the tension spring 10 can be selected from high-strength alloy steel to improve its durability and fatigue resistance. In addition, the buckle structure of the tension spring 10 can be designed to be adjustable so that the size of the preload can be adjusted according to actual needs. To this end, the technical solution can apply a stable preload between the rotating shafts 8 through the setting of elastic parts, thereby ensuring that the support assembly can effectively open and provide additional support to the support body 1 when the set vertical vibration amplitude is reached. Compared with the prior art, this solution not only improves the stability of the seismic isolation bearing, but also enhances its applicability and flexibility through the adjustable design of the elastic parts, effectively solving the lateral instability problem that may occur in the seismic isolation bearing under extreme loads.

[0035] The function of the pin 4 is to fix the hinge point of the support frame to ensure that the support frame can maintain a stable structural form when subjected to stress. As a preferred embodiment, the pin 4 can be made of high-strength steel to enhance its tensile and shear resistance. In addition, the diameter and length of the pin 4 can be adjusted according to the size and stress conditions of the support rod 5 to ensure the firmness and stability of the connection; in this regard, the support frame is connected to the hinge of the support rod 5 through the pin 4, which can effectively prevent the support frame from being displaced or deformed during vibration, thereby ensuring the overall stability of the seismic isolation bearing. As a result, this technical solution solves the problem of lateral instability that may occur in the seismic isolation bearing under extreme loads in the prior art, and improves the service life and seismic resistance of the seismic isolation bearing. Compared with the prior art, this solution significantly enhances the stability and safety of the seismic isolation bearing through simple structural improvements, and is suitable for various complex seismic spectrum characteristics.

[0036] In this embodiment, rollers 7 are provided at both ends of the rotating shaft 8. The provision of the rollers 7 enables the rotating shaft 8 to roll smoothly in the guiding groove 9. Thus, when the seismic isolation bearing is subjected to vertical vibration, the rollers 7 can move along the guiding groove 9, ensuring the stability and flexibility of the support assembly. The design of the rollers 7 not only reduces the frictional resistance but also improves the response speed of the bearing, enabling it to more effectively absorb and disperse energy during an earthquake.

[0037] Specifically, the rollers 7 can be made of wear-resistant materials to enhance their service life and reliability. The diameter and width of the rollers 7 can be optimized according to the dimensions of the guiding groove 9 to ensure that the movement trajectory of the rollers 7 in the guiding groove 9 is precise and stable. In addition, the installation method of the rollers 7 can adopt a bearing structure to reduce the frictional loss when the rollers 7 rotate, further improving the performance of the bearing. Thus, through the provision of the rollers 7, this technical solution solves the problem of potential lateral instability of the seismic isolation bearing in the prior art under extreme loads. The introduction of the rollers 7 enables the bearing to adjust the position of the support frame through the rolling of the rollers 7 when subjected to vertical vibration, thereby maintaining the stability of the bearing. Compared with the prior art, this solution not only improves the seismic performance of the seismic isolation bearing but also enhances its reliability and durability in practical applications.

[0038] In this embodiment, the upper connecting steel plate 2 and the lower connecting steel plate 3 are provided with a guiding groove 9 for the rollers 7 to roll on. Among them, the guiding groove 9 includes an inclined section 902 and a straight section 901. The inclined section 902 is located in the middle of the guiding groove 9 and has a V-shaped cross-section, and the straight sections 901 are located at both ends of the inclined section 902 and have the same length. The inclination angles on both sides of the V-shaped inclined section 902 are 3° to 5°. Specifically, the design of the guiding groove 9 enables the rollers 7 to roll smoothly therein. The V-shaped cross-section of the inclined section 902 helps the rollers 7 to maintain stability during the rolling process, and the straight section 901 ensures that the rollers 7 can stop smoothly when rolling to both ends; as a preferred embodiment, the inclined section 902 of the guiding groove 9 can be designed with a V-shaped cross-section of different angles to adapt to different rolling requirements. For example, the inclination angle can be adjusted according to the needs of the actual application scenario to ensure that the rollers 7 can obtain the best stability and rolling effect during the rolling process. In addition, the length of the straight section 901 can also be optimized according to the dimensions and rolling distance of the rollers 7 to further ensure the smoothness of the rollers 7 during the rolling process.

[0039] Thus, the technical solution of the present application sets the guiding grooves 9 on the upper connecting steel plate 2 and the lower connecting steel plate 3, enabling the rollers 7 to roll smoothly therein, thereby solving the problem of lateral instability that may occur in the existing isolation bearings under extreme loads. Specifically, the design of the guiding grooves 9 not only improves the rolling stability of the rollers 7, but also ensures the smoothness and controllability of the rollers 7 during the rolling process through the combination of the inclined section 902 and the straight section 901. Compared with the existing technology, the technical solution of the present application has significant advantages in improving the stability and service life of the isolation bearings, can effectively reduce the overall overturning risk of the structure, and improve the safety of the upper structure of the building during an earthquake.

[0040] The guiding groove 9 includes an inclined section 902 and a straight section 901. The inclined section 902 is located in the middle of the guiding groove 9 and has a V-shaped cross-section. The straight sections 901 are located at both ends of the inclined section 902 and have the same length. Among them, the design of the V-shaped inclined section 902 can effectively guide the movement trajectory of the roller 7 in the guiding groove 9, ensuring that the roller 7 can roll smoothly during the vibration and avoiding the instability of the support frame due to excessive vibration amplitude. The setting of the straight section 901 further guarantees the stability of the roller 7 in the guiding groove 9, preventing the roller 7 from shifting or jamming during the rolling process.

[0041] Specifically, the cross-sectional shape of the V-shaped inclined section 902 is V-shaped, and the inclination angles on both sides are 3° to 5°. This angle range can ensure that the roller 7 is neither difficult to control due to too large an angle nor lose its guiding function due to too small an angle during the rolling process. The lengths of the straight sections 901 are the same, which can ensure that the roller 7 has the same rolling distance at both ends of the guiding groove 9, thereby avoiding uneven stress on the support frame caused by inconsistent rolling distances. The setting of the inclination angle enables the roller 7 to enter the V-shaped inclined section 902 more smoothly when rolling in the guiding groove 9 and maintain a stable rolling trajectory in the inclined section 902. Specifically, the selection of the inclination angle has been verified through multiple experiments. The angle range of 3° to 5° can ensure the smooth sliding of the roller 7 while avoiding unstable rolling or jamming caused by too large or too small an angle. As a preferred implementation manner, the inclination angle can be set to 4° to further optimize the rolling effect of the roller 7; as a preferred implementation manner, the inclination angles on both sides of the V-shaped inclined section 902 can be set to 4°. This angle can ensure the stable rolling of the roller 7 while further optimizing the stress distribution of the support frame. In addition, the length of the straight section 901 can be adjusted according to actual needs to adapt to different specifications of the seismic isolation bearings. Thus, the technical solution of the present application can effectively solve the problem of lateral instability that may occur in the existing seismic isolation bearings under extreme loads by setting the V-shaped inclined section 902 and the straight section 901. The design of the V-shaped inclined section 902 can guide the movement trajectory of the roller 7 in the guiding groove 9 to ensure the stability of the support frame during vibration, and the setting of the straight section 901 further enhances the rolling stability of the roller 7. Therefore, the technical solution of the present application can not only improve the seismic performance of the seismic isolation bearing but also extend its service life, and is applicable to various complex seismic motion spectral characteristics.

[0042] This technical solution solves the problems of unstable rolling or jamming that may occur when the roller 7 rolls in the guiding groove 9 by setting the inclination angle of the V-shaped inclined section 902. Compared with the prior art, this solution can ensure that the roller 7 rolls more smoothly in the guiding groove 9, thereby improving the overall stability and seismic performance of the seismic isolation bearing. Specifically, the reasonable setting of the inclination angle enables the roller 7 to better adapt to the shape of the guiding groove 9 during the rolling process, reduces the rolling resistance, and avoids the performance degradation of the seismic isolation bearing caused by unstable rolling. Thus, this solution has significant advantages in improving the service life and seismic performance of the seismic isolation bearing.

[0043] The present invention also discloses a construction method for a reinforced seismic isolation bearing, which is characterized in that it includes the following steps:

[0044] S1: Reinforcement binding and concrete pouring of the lower structure; the lower structure refers to the building foundation or the lower structure (such as the foundation, bridge pier, etc.). After conventional reinforced concrete construction, it is first poured to a height of 500 - 1000 mm from the elevation of the lower embedded plate (i.e., the lower connecting steel plate 3), or 30 - 50 mm is reserved for the secondary grouting process.

[0045] S2: Install the bearing body 1; position the lower connecting steel plate 3. A level and a theodolite can be used to determine the design elevation and axis position, and control points are marked by welding short steel bars, with an error ≤ 1 mm; clean the surface of the lower connecting steel plate 3 and apply butter. Align the bolt holes on the bearing body 1 and the lower connecting steel plate 3, and tighten the bolts symmetrically step by step (high-strength bolts need to be operated according to the specifications). When hoisting, equipment such as a tower crane is used, and a special person is in charge to ensure safety. The vertical deviation of the bearing ≤ 5 mm.

[0046] S3: After the installation of the bearing body 1 is completed, place multiple jacks between the upper connecting steel plate 2 and the lower connecting steel plate 3 around the bearing body 1;

[0047] S4: Use the jacks to support, so that the rollers 7 on the rotating shaft 8 slide into the guide grooves 9 on the upper connecting steel plate 2 and the guide grooves 9 on the lower connecting steel plate 3;

[0048] S5: After the rollers 7 slide into the guide grooves 9, the on-site personnel manually adjust the support frame to make it located at the V-shaped inclined section 902, and compress the elastic member to obtain a set pre-tightening force;

[0049] S6: After all the support frames are adjusted, withdraw the jacks, and the upper connecting steel plate 2 and the lower connecting steel plate 3 tightly press the support frame through the guide grooves 9.

[0050] S7: Reinforcement binding and concrete pouring of the upper structure.

[0051] First, carry out the construction of the lower-layer main body and the lower pier reinforcement; then install the seismic isolation bearing; after the installation of the seismic isolation bearing is completed, place multiple jacks between the upper connecting steel plate 2 and the lower connecting steel plate 3 around the bearing body 1; use the jacks to support, so that the rollers 7 on the rotating shaft 8 enter the guide grooves 9 on the upper connecting steel plate 2 and the guide grooves 9 on the lower connecting steel plate 3; after the rollers 7 slide into the guide grooves 9, the on-site personnel manually adjust the support frame to make it located at the V-shaped inclined section 902, and compress the elastic member to obtain a set pre-tightening force; after all the support frames are adjusted, withdraw the jacks, and the upper connecting steel plate 2 and the lower connecting steel plate 3 tightly press the support frame through the guide grooves 9.

[0052] Among them, the process of the roller 7 entering the guiding groove 9 can be achieved by adjusting the height and position of the jack to ensure that the roller 7 can smoothly slide into the guiding groove 9. When manually adjusting the support frame, the angle of the support frame can be rotated to align it with the V-shaped inclined section 902, so as to ensure that the elastic member can be compressed to the set pre-tightening force. After the jack is removed, the upper connecting steel plate 2 and the lower connecting steel plate 3 tightly press the support frame through the guiding groove 9 to ensure the stability of the support frame in the seismic isolation bearing.

[0053] Specifically, this construction method ensures that the installation and adjustment process of the seismic isolation bearing is more precise and stable by using a jack and manually adjusting the support frame. By compressing the elastic member to obtain the set pre-tightening force, additional support can be provided during an earthquake, reducing the lateral instability of the seismic isolation bearing caused by the horizontal displacement exceeding the critical value, thereby improving the service life of the seismic isolation bearing and the safety of the upper structure of the building during an earthquake.

[0054] The overall usage process of this solution is as follows:

[0055] Since the bearing body 1 is a natural rubber seismic isolation bearing and rubber is a highly elastic polymer material with reversible deformation, the rubber deformation in the rubber seismic isolation bearing is utilized by the jack. At the same time, the original fixed distance on the four sides of the upper connecting steel plate 2 and the lower connecting steel plate 3 is expanded to the space size where the support assembly can be placed into the guiding groove 9. At the same time, the on-site staff pushes the support frame inward until the elastic member is compressed and the roller 7 is located in the inclined section 902 of the guiding groove 9. At this time, the jack between the upper connecting steel plate 2 and the lower connecting steel plate 3 is withdrawn simultaneously. Under the action of the rubber deformation recovery, the upper connecting steel plate 2 and the lower connecting steel plate 3 press the roller 7 on the support frame, so that the support frame is fixed at the inclined section 902 and has the set pre-tightening force; during an earthquake, the bearing body 1 will have a certain amount of deformation in the vertical direction. The deformation that the bearing body 1 undergoes vertically during vibration causes a gap to appear between the support assembly and the upper connecting steel plate 2 and the lower connecting steel plate 3. The support assembly provides support to the bearing body 1 by expanding with the set pre-tightening force (the set pre-tightening force means that the driving force for expanding the support frame needs to ensure that the roller 7 can roll to the end of the straight section 901). At the same time, the roller 7 rolls along the inclined section 902 in the guiding groove 9 to the straight section 901 until the roller 7 rolls to the end of the straight section 901 and abuts against the roller 7, and the support frame provides additional support to the bearing body 1.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A reinforced isolation bearing, characterized in that: It includes a support main body and a support assembly. An upper connecting steel plate and a lower connecting steel plate which are arranged in parallel and at intervals are provided on the support main body. The support assembly is arranged between the upper connecting plate and the lower connecting plate and is applied with a set pre-tightening force. When the set vertical vibration amplitude is reached, the set pre-tightening force drives the support assembly to expand and provide support for the support main body.

2. The enhanced seismic isolation bearing according to claim 1, characterized in that: There are multiple support assemblies which surround the support main body.

3. The enhanced seismic isolation bearing according to claim 1, characterized in that: The support assembly includes two support frames arranged in parallel. Each support frame includes two support rods arranged in an X shape. The two support rods are hinged at the intersection to form the support frame.

4. The enhanced seismic isolation bearing according to claim 3, wherein: Mounting holes are respectively provided at the end parts of the support rods. The mounting holes on the two support frames face each other and are penetrated by a rotating shaft. An annular mounting position is provided in the middle of the rotating shaft, and rollers are provided at both ends of the rotating shaft.

5. The enhanced seismic isolation bearing according to claim 3, characterized in that: An elastic member for applying the set pre-tightening force is provided between the rotating shafts. The elastic member is a tension spring and its two ends are looped on the annular mounting positions.

6. The enhanced seismic isolation bearing according to claim 3, wherein: The support frames are connected by a pin shaft, and the pin shaft is connected at the hinge of the support rods.

7. The enhanced seismic isolation bearing according to claim 4, wherein: Guide grooves for the rollers to roll are provided on the upper connecting steel plate and the lower connecting steel plate. The guide grooves include an inclined section and a straight section.

8. The enhanced seismic isolation bearing according to claim 7, wherein: The inclined section is located in the middle of the guide groove and has a V-shaped cross section. The straight sections are located at both ends of the inclined section and have the same length.

9. The enhanced seismic isolation bearing according to claim 7, wherein: The inclination angles on both sides of the V-shaped inclined section are 3° to 5°.

10. A construction method for a reinforced isolation bearing, characterized in that: When using the enhanced seismic isolation support as described in any one of claims 1-9, the construction method includes the following steps: S1: Construction of the lower-layer main body and the reinforcement of the lower pier; S2: Installation of the seismic isolation support; S3: After the installation of the seismic isolation support is completed, place a plurality of jacks between the upper connecting steel plate and the lower connecting steel plate around the support main body; S4: Use the jacks to support so that the rollers on the rotating shaft enter the guide grooves on the upper connecting steel plate and the guide grooves on the lower connecting steel plate; S5: After the rollers slide into the guide grooves, the on-site personnel manually adjust the support frames to make them located in the V-shaped inclined section and compress the elastic member to obtain the set pre-tightening force; S6: After all the support frames are adjusted, remove the jacks, and the upper connecting steel plate and the lower connecting steel plate tightly press the support frames through the guide grooves.

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