A vibration double-control friction pendulum seismic isolation support and an assembling method thereof

Abstract

The application relates to a vibration double-control friction pendulum isolation bearing and an assembling method thereof, and belongs to the technical field of shock absorption and vibration reduction. The bearing comprises an upper seat plate, a lower seat plate and a spherical crown body between the two, the spherical crown body comprises outer spiral springs, inner spiral springs, an upper spherical crown body and a lower spherical crown body, and can comprise or not comprise dampers; the inner spiral springs and the outer spiral springs are sleeved together, thereby forming a spiral spring unit; spring positioning rings are arranged at the lower part of the upper spherical crown body and the upper part of the lower spherical crown body, the upper and lower ends of the inner spiral springs are positioned between the spring positioning rings of the upper spherical crown body and the lower spherical crown body respectively, and the outer spiral springs in the spiral spring unit are sleeved on the outer periphery of the inner spiral springs and the spring positioning rings; the dampers comprise damper springs, a fixed sleeve and a movable sleeve which are inserted into each other, and damping medium is injected into the fixed sleeve and the movable sleeve. The vertical vibration reduction effect of the bearing is obvious, the vibration reduction efficiency is high, and the vibration reduction and noise reduction problems of buildings above the subway can be effectively solved.

Description

Technical Field

[0001] This invention relates to a vibration-damping dual-control friction pendulum isolation bearing and its assembly method, belonging to the field of vibration isolation / damping technology. Background Technology

[0002] Subways play a vital role in alleviating urban traffic congestion and facilitating people's travel. However, the vibrations and noise generated by subways also trouble people, making it urgent to address the issues of vibration reduction and noise control for buildings built above subway lines.

[0003] Helical spring vibration isolation bearings are effective at isolating vertical vibrations, but they cannot isolate horizontal seismic forces; friction pendulum vibration isolation bearings are effective at isolating horizontal seismic forces, but they cannot isolate vertical vibrations.

[0004] The biggest challenge in combining these two components is twofold: firstly, their load-bearing capacities are not coordinated, making matching difficult. When the load-bearing capacity is the same, the bearing area of ​​the friction pendulum is about 20% of that of the helical spring; secondly, because the subway vibration frequency is high and the displacement value of the vibration pair is very small, existing dampers do not have dampers that can be matched with the vibration dual control, resulting in these products not having dampers installed. This affects the vibration reduction effect and fails to meet the standard requirements.

[0005] In the prior art, CN212001610U discloses a three-dimensional seismic isolation bearing with a friction pendulum; CN 216664574U discloses a three-dimensional friction pendulum seismic isolation bearing; CN216840888U discloses a device for vertical and horizontal vibration isolation based on a friction pendulum with an additional damper; CN112780093A discloses a compact three-dimensional friction pendulum seismic isolation bearing; CN114197935A discloses a device and method for vertical and horizontal vibration isolation based on a friction pendulum with an additional damper; and CN207295423U discloses a grooved friction pendulum high-pier bridge seismic isolation bearing.

[0006] The goal of dual vibration and seismic control is to achieve vibration reduction and horizontal seismic isolation in subway systems. Connecting vertical isolation bearings and friction pendulum isolation bearings in series to isolate vertical vibration from horizontal seismic forces is essential for decoupling these forces. However, the existing technologies described above have the following drawbacks:

[0007] (1) In the existing technology, the method of connecting vertical vibration isolation bearings and friction pendulum bearings in series is not advisable, as it involves two relatively independent bearings connected in series, regardless of which bearing is on top.

[0008] To reduce vertical vibrations in subway systems, the vertical deformation of the elastic element needs to be increased. Furthermore, after the friction pendulum isolation bearing experiences horizontal displacement, the center of the vertical force shifts, causing the vertical isolation bearing to bear an eccentric load. This leads to uneven vertical deformation of the vertical isolation bearing, resulting in inclination of the connection surface between the friction pendulum isolation bearing and the vertical isolation bearing. The inclination of the lower or upper plate of the friction pendulum isolation bearing indirectly alters the period of the pendulum, significantly changing its performance. In double-pendulum friction pendulum systems, the two sets of friction pairs will simultaneously exhibit incoordination at the contact surfaces, leading to stress concentration problems.

[0009] Among the aforementioned existing patent documents, CN 212001610 U, CN 112780093 A and CN 207295423U belong to this category.

[0010] (2) It is a consensus in the industry that disc springs have high vertical stiffness and small deformation when the displacement is small. However, theoretical and experimental results show that their vibration reduction effect in subways cannot meet expectations.

[0011] Among the aforementioned patent documents, CN114197935A belongs to this category.

[0012] (3) Vertical vibration of the subway is characterized by a high frequency, approximately 30–80 Hz. According to the representation of mechanical vibration, this vibration frequency range has high acceleration and velocity amplitudes, but relatively small displacement amplitudes, with a maximum displacement amplitude of approximately ±0.28 mm. Displacement dampers cannot function effectively under such small displacements. Furthermore, the added initial stiffness of displacement dampers further reduces their displacement, making it even more difficult to achieve their function.

[0013] Among the aforementioned patent documents, CN114197935A also belongs to this category. Summary of the Invention

[0014] To address the aforementioned deficiencies in the existing technology, this invention proposes a vibration-damping dual-control friction pendulum seismic isolation bearing and its assembly method, which has significant vertical vibration reduction effect, high vibration reduction efficiency, and also has the function of isolating horizontal seismic forces.

[0015] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0016] A vibration-controlled friction pendulum seismic isolation bearing includes an upper seat plate, a lower seat plate, and a spherical crown between the two. The spherical crown includes an outer helical spring, an inner helical spring, a damper, an upper spherical crown, and a lower spherical crown. The inner helical spring and the outer helical spring are centrally fitted together to form a helical spring unit. Multiple sets of helical spring units are arranged inside the spherical crown.

[0017] The lower part of the upper spherical crown and the upper part of the lower spherical crown are both flat. Several circular grooves are provided on the flat surface. A threaded hole is provided in the center of the groove. A spring positioning ring is provided on the lower part of the upper spherical crown and the upper part of the lower spherical crown. The spring positioning ring is provided with a circular boss that matches the circular grooves of the upper and lower spherical crowns. The spring positioning ring is fixed to the lower part of the upper spherical crown with an internal hexagon screw.

[0018] The inner helical spring in the helical spring unit has its upper and lower ends positioned between the spring positioning rings of the upper and lower spherical caps, respectively. The outer helical spring in the helical spring unit is sleeved on the outer periphery of the inner helical spring and the spring positioning ring.

[0019] The damper includes a damper spring and a fixed sleeve and a movable sleeve inserted into each other. The damper spring is located at the center of the fixed sleeve and the movable sleeve, and a damping medium is injected into the fixed sleeve and the movable sleeve.

[0020] Furthermore, the upper surface of the upper spherical cap and the lower surface of the lower spherical cap are spherical surfaces, and the spherical surfaces are provided with concentric and recessed spherical grooves, and spherical liner plates are provided in the spherical grooves.

[0021] Furthermore, the spherical liner is a PTFE plate, and the PTFE plate is fixed to the upper and lower spherical crowns by screws or adhesive.

[0022] Furthermore, the periphery of the upper part of the upper spherical crown and the periphery of the lower part of the lower spherical crown are spherical or conical surfaces, which are concentric with the spherical groove, but their radii are smaller than the radius of the spherical groove.

[0023] Furthermore, the lower part of the fixed sleeve is a base plate, and a spherical boss is provided at the center of the bottom of the base plate. The upper periphery of the base plate is a plane, and a circular boss is provided at the center of the plane. The fixed sleeve is composed of several concentrically arranged fixed sleeve steel pipes, and the fixed sleeve steel pipes are welded to the base plate to form an integral whole.

[0024] The upper part of the moving sleeve is a top plate, which is a circular plate. A spherical boss is also provided at the center of the top plate. The lower periphery of the top plate is a plane, and a circular boss is also provided at the center of the plane. The moving sleeve is composed of several concentrically arranged moving sleeve steel pipes, which are welded to the top plate to form an integral whole. A mandrel extends downward from the top plate, and the damper spring is sleeved on the mandrel.

[0025] Furthermore, the spherical protrusions at both ends of the damper are respectively positioned on the inner spherical surface of the upper spherical cap and the inner spherical surface of the lower spherical cap, thereby forming a complete spherical cap.

[0026] Furthermore, the base plate is a circular plate.

[0027] Furthermore, the inner diameter of the outer helical spring is clearance-fitted with the outer diameter of the spring positioning ring, and the inner diameter of the inner helical spring is clearance-fitted with the outer diameter of the head of the internal hexagonal screw.

[0028] Furthermore, the outer helical spring is positioned on the upper and lower spherical caps by a spring positioning ring; the inner helical spring is positioned on the upper and lower spherical caps by the head of the internal hexagonal screw.

[0029] Furthermore, an upper seat plate and a lower seat plate are respectively provided on the upper side of the upper spherical crown and the lower side of the lower spherical crown; the lower part of the upper seat plate and the upper part of the lower seat plate are both spherical, and annular retaining rings are provided around the perimeter of the spherical surface. The other side of the upper seat plate or the lower seat plate is a flat surface, and evenly distributed trapezoidal flanges are provided around its perimeter. Mounting holes are provided on the trapezoidal flanges; evenly distributed arc-shaped flanges are also provided around the perimeter of the upper seat plate or the lower seat plate and between adjacent trapezoidal flanges. Several U-shaped holes are distributed on the arc-shaped flanges, and circular countersunk holes are provided on the top of the U-shaped holes. Spherical stainless steel plates are fixed to the lower surface of the upper seat plate and the upper surface of the lower seat plate with screws; the spherical liner and the corresponding spherical stainless steel plate form a friction pair.

[0030] Furthermore, during construction, a tie rod is installed between the U-shaped holes of the upper and lower seat plates, and the tie rod is fixed to the circular countersunk hole by washers and nuts at both ends; after construction is completed, all tie rods can be removed.

[0031] Furthermore, the helical spring unit is arranged in a hexagonal shape.

[0032] Furthermore, shear-resistant structural measures may or may not be provided between the upper seat plate and the lower seat plate.

[0033] Furthermore, the formula for calculating the restoring force of the vibration-controlled friction pendulum isolation bearing is as follows:

[0034]

[0035] In the formula:

[0036] F – Restoring force, measured in kilonewtons (kN).

[0037] P – Vertical load on the support, measured in kilonewtons (kN).

[0038] R – Equivalent radius of curvature, in millimeters (mm)

[0039] D – Horizontal displacement of the support, in millimeters (mm)

[0040] μ – coefficient of kinetic friction, dimensionless;

[0041] sng—a symbolic function; when (D) > 1, sng(D) = 1; when (D) = 0, sng(D) = 0; the horizontal load borne by the vibration-controlled friction pendulum support spring assembly is:

[0042] F V =K h D

[0043] In the formula:

[0044] Fv – The horizontal load borne by the support helical spring unit and damper, measured in kilonewtons (kN) or kN. h —Horizontal stiffness of the support helical spring unit and damper, in kilonewtons per millimeter (kN / mm).

[0045] D – Horizontal displacement of the support, in millimeters (mm);

[0046] Shear-resistant structural measures are not required between the upper and lower bearing plates when the following conditions are met:

[0047] kF v >F

[0048] In the formula:

[0049] k – coefficient, ranging from 0.6 to 0.8, with the minimum value taken when the coefficient of kinetic friction is low.

[0050] The assembly method of the above-mentioned vibration-controlled friction pendulum seismic isolation bearing includes the following steps:

[0051] S1: Thoroughly clean the inspected and qualified parts to remove surface oil stains and dirt;

[0052] S2: Install the spherical stainless steel plates sequentially onto the lower seat plate and the upper seat plate, and install the spherical liner onto the upper spherical crown and the lower spherical crown respectively;

[0053] S3 fixes the spring positioning ring to the upper and lower spherical caps respectively with screws; the circular boss on the spring positioning ring and the corresponding groove on the upper and lower spherical caps are fitted with an overfit.

[0054] S4: Install the lower spherical crown onto the spherical surface of the lower seat plate, ensuring that the lower spherical crown is concentric with the lower seat plate;

[0055] S5: Install the outer helical spring, inner helical spring, and damper onto the lower spherical crown in sequence;

[0056] S6: Install the upper spherical crown. During installation, the spring positioning ring should be accurately positioned with the outer helical spring, the inner helical spring, and the damper.

[0057] S7: Install the upper seat plate, ensuring that the upper seat plate is concentric with the upper spherical crown;

[0058] S8: Load the components that have completed the above installation process onto the press to the design load;

[0059] S9: Check the coaxiality of the spherical crown with the upper and lower seat plates. After confirming that there is no error, install the dust cover and tighten it with the fastening ring.

[0060] S10: Install tie rods; install washers and nuts on both ends of the tie rods respectively, insert the tie rods into the U-shaped holes on the arc-shaped flanges of the upper and lower seat plates, and position the washers by the round countersunk holes on the U-shaped holes to ensure that the tie rods will not slip off. Then tighten all the nuts evenly to carry out the construction and installation of the vibration dual-control friction pendulum seismic isolation bearing.

[0061] S11: After construction is completed, remove all tie rods.

[0062] Another type of vibration-controlled friction pendulum seismic isolation bearing includes an upper seat plate, a lower seat plate, and a spherical crown between them. The spherical crown comprises an outer helical spring, an inner helical spring, an upper spherical crown, and a lower spherical crown. The inner and outer helical springs are centrally fitted together to form a helical spring unit. Multiple helical spring units are disposed within the spherical crown.

[0063] The lower part of the upper spherical crown and the upper part of the lower spherical crown are both flat. Several circular grooves are provided on the flat surface. A threaded hole is provided in the center of the groove. A spring positioning ring is provided on the lower part of the upper spherical crown and the upper part of the lower spherical crown. The spring positioning ring is provided with a circular boss that matches the circular grooves of the upper and lower spherical crowns. The spring positioning ring is fixed to the lower part of the upper spherical crown with an internal hexagon screw.

[0064] The inner helical spring in the helical spring unit has its upper and lower ends positioned between the spring positioning rings of the upper and lower spherical caps, respectively, and the outer helical spring in the helical spring unit is sleeved on the outer periphery of the inner helical spring and the spring positioning ring.

[0065] Furthermore, the upper surface of the upper spherical crown and the lower surface of the lower spherical crown are spherical surfaces, each with a concentric and recessed spherical groove, within which a spherical liner is provided; the periphery of the upper part of the upper spherical crown and the periphery of the lower part of the lower spherical crown are spherical or conical surfaces, concentric with the spherical groove, but with a radius smaller than the radius of the spherical groove; the inner diameter of the outer helical spring is clearance-fitted with the outer diameter of the spring positioning ring, and the inner diameter of the inner helical spring is clearance-fitted with the outer diameter of the head of the internal hexagonal screw; the outer helical spring is positioned on the upper and lower spherical crowns by the spring positioning ring; the inner helical spring is positioned on the upper and lower spherical crowns by the head of the internal hexagonal screw.

[0066] Furthermore, an upper seat plate and a lower seat plate are respectively provided on the upper side of the upper spherical cap and the lower side of the lower spherical cap; the lower part of the upper seat plate and the upper part of the lower seat plate are both spherical surfaces, and annular retaining rings are provided around the perimeter of each spherical surface. The other side of the upper or lower seat plate is a flat surface, and evenly distributed trapezoidal flanges are provided around its perimeter, with mounting holes on the trapezoidal flanges; evenly distributed arc-shaped flanges are also provided around the perimeter of the upper or lower seat plate and between adjacent trapezoidal flanges, with several U-shaped holes distributed on the arc-shaped flanges, and the upper surface of the U-shaped holes... The upper and lower seats are equipped with circular countersunk holes, and spherical stainless steel plates are fixed to the lower and upper surfaces of the upper and lower seats with screws. The spherical liner and the corresponding spherical stainless steel plate form a friction pair. During construction, a tie rod is installed between the U-shaped holes of the upper and lower seats, and the tie rod is fixed to the circular countersunk hole by washers and nuts at both ends. After construction, all tie rods can be removed. The helical spring units are arranged in a hexagonal shape. Shear-resistant structural measures may or may not be provided between the upper and lower seats.

[0067] Furthermore, the formula for calculating the restoring force of the vibration-controlled friction pendulum isolation bearing is as follows:

[0068]

[0069] In the formula:

[0070] F – Restoring force, measured in kilonewtons (kN).

[0071] P – Vertical load on the support, measured in kilonewtons (kN).

[0072] R – Equivalent radius of curvature, in millimeters (mm)

[0073] D – Horizontal displacement of the support, in millimeters (mm)

[0074] μ – coefficient of kinetic friction, dimensionless;

[0075] sng—a symbolic function; when (D) > 1, sng(D) = 1; when (D) = 0, sng(D) = 0; the horizontal load borne by the vibration-controlled friction pendulum support spring assembly is:

[0076] F V =K h D

[0077] In the formula:

[0078] Fv — The horizontal load borne by the support helical spring unit, measured in kilonewtons (kN).

[0079] K h —Horizontal stiffness of the support helical spring unit, in kilonewtons per millimeter (kN / mm).

[0080] D – Horizontal displacement of the support, in millimeters (mm);

[0081] Shear-resistant structural measures are not required between the upper and lower bearing plates when the following conditions are met:

[0082] kF v >F

[0083] In the formula:

[0084] k – coefficient, ranging from 0.6 to 0.8, with the minimum value taken when the coefficient of kinetic friction is low.

[0085] The assembly method of this vibration-controlled friction pendulum seismic isolation bearing includes the following steps:

[0086] S1: Thoroughly clean the inspected and qualified parts to remove surface oil stains and dirt;

[0087] S2: Install the spherical stainless steel plates sequentially onto the lower seat plate and the upper seat plate, and install the spherical liner onto the upper spherical crown and the lower spherical crown respectively;

[0088] S3 fixes the spring positioning ring to the upper and lower spherical caps respectively with screws; the circular boss on the spring positioning ring and the corresponding groove on the upper and lower spherical caps are fitted with an overfit.

[0089] S4: Install the lower spherical crown onto the spherical surface of the lower seat plate, ensuring that the lower spherical crown is concentric with the lower seat plate;

[0090] S5: Install the outer helical spring and the inner helical spring onto the lower spherical crown in sequence;

[0091] S6: Install the upper spherical crown body. During installation, the spring positioning ring should be accurately positioned with the outer and inner helical springs.

[0092] S7: Install the upper seat plate, ensuring that the upper seat plate is concentric with the upper spherical crown;

[0093] S8: Load the components that have completed the above installation process onto the press to the design load;

[0094] S9: Check the coaxiality of the spherical crown with the upper and lower seat plates. After confirming that there is no error, install the dust cover and tighten it with the fastening ring.

[0095] S10: Install tie rods; install washers and nuts on both ends of the tie rods respectively, insert the tie rods into the U-shaped holes on the arc-shaped flanges of the upper and lower seat plates, and position the washers by the round countersunk holes on the U-shaped holes to ensure that the tie rods will not slip off. Then tighten all the nuts evenly to carry out the construction and installation of the vibration dual-control friction pendulum seismic isolation bearing.

[0096] S11: After construction is completed, remove all tie rods.

[0097] The present invention proposes a vibration-controlled friction pendulum isolation bearing and its assembly method, which can achieve the following technical effects:

[0098] 1. By combining the helical spring vibration isolator, friction pendulum, and damper into one unit, the optimal combination of vertical vibration damper, horizontal seismic isolation support, and damper is achieved, effectively solving the problem of dual vibration and seismic control.

[0099] 2. It overcomes the drawbacks and shortcomings of helical spring vibration isolators and friction pendulum vibration isolation supports, and meets the requirements of vibration and shock control.

[0100] 3. The damper has stable mechanical properties, can be easily subjected to repeated loading for 50 cycles, and maintains stable performance.

[0101] 4. After installing a damper, the damping ratio of the structure in the vibration-controlled friction pendulum bearing can be made no less than 5%, thus meeting the requirements of relevant national standards and improving the vertical vibration reduction effect. Due to the installation of the damper, the vibration frequency of the vibration-controlled vibration isolation bearing can be significantly reduced, thereby extending the service life of the product. Attached Figure Description

[0102] Figure 1 This is a structural elevation diagram of the vibration-controlled friction pendulum seismic isolation support of the present invention;

[0103] Figure 2 yes Figure 1 Top view;

[0104] Figure 3 This is a schematic diagram of the arrangement of the helical spring unit and damper in the vibration-controlled friction pendulum seismic isolation support of the present invention;

[0105] Figure 4 yes Figure 1 Enlarged view of the tie rod connection at point A;

[0106] Figure 5 yes Figure 1 Enlarged view of a portion of the damper structure in section B;

[0107] Figure 6 The test hysteresis curve of the vibration-controlled friction pendulum seismic isolation bearing damper of the present invention has an amplitude of ±0.25mm and a frequency of 50mm / min, with 4 test cycles.

[0108] Figure 7 The test hysteresis curve of the vibration-controlled friction pendulum seismic isolation bearing damper of the present invention has an amplitude of ±0.5mm and a frequency of 50mm / min, with 4 test cycles.

[0109] Figure 8The test hysteresis curve of the vibration-controlled friction pendulum seismic isolation bearing damper of the present invention has an amplitude of ±1.0 mm and a frequency of 50 mm / min, with 4 test cycles.

[0110] Figure 9 The test hysteresis curve of the vibration-controlled friction pendulum seismic isolation bearing damper of the present invention has an amplitude of ±0.5mm, a test frequency of 50mm / min, and 50 test cycles.

[0111] Figure 10 This is a schematic diagram of another vibration-controlled friction pendulum isolation support helical spring unit arrangement according to the present invention (excluding the damper). Detailed Implementation

[0112] The following is in conjunction with the appendix Figure 1-10 The present invention will be further described in detail below to facilitate a clear understanding of the invention, but these descriptions do not constitute a limitation thereof.

[0113] Example 1

[0114] As attached Figure 1-5 As shown, this embodiment of a vibration-controlled friction pendulum isolation bearing includes an upper seat plate 7, a lower seat plate 6, and a spherical crown between them. The spherical crown includes an outer helical spring 3, an inner helical spring 4, a damper 8, an upper spherical crown 2, and a lower spherical crown 1. The inner helical spring 4 and the outer helical spring 3 are centrally fitted together, thus forming a helical spring unit. Multiple sets of helical spring units are arranged inside the spherical crown. In this embodiment, as... Figure 3 As shown in the figure, the hexagonal arrangement of the helical spring units has the best effect, as verified by experiments.

[0115] like Figure 1 As shown, the lower part of the upper spherical crown 2 and the upper part of the lower spherical crown 1 are both flat surfaces. Several circular grooves are provided on these flat surfaces, with threaded holes at the center of each groove. Spring positioning rings 5 ​​are provided on the lower part of the upper spherical crown 2 and the upper part of the lower spherical crown 1. Each spring positioning ring 5 has a circular boss that matches the circular grooves of the upper spherical crown 2 and the lower spherical crown 1. The spring positioning rings 5 ​​are fixed to the lower part of the upper spherical crown 2 with hexagonal screws. The upper surface of the upper spherical crown 2 and the lower surface of the lower spherical crown 1 are spherical surfaces. Each spherical surface has a concentric and recessed spherical groove. A spherical liner 101 is provided within the spherical groove. In this embodiment, the spherical liner 101 is a PTFE plate, which is fixed to the upper spherical crown 2 and the lower spherical crown 1 with screws or adhesive. The periphery of the upper part of the upper spherical crown 2 and the periphery 103 of the lower part of the lower spherical crown 1 are spherical or conical surfaces, concentric with the spherical groove, but with a radius smaller than the radius of the spherical groove. The spherical groove has spherical protrusions 102 on both sides.

[0116] In this embodiment, the inner helical spring 4 within the helical spring unit has its upper and lower ends positioned between the spring positioning rings 5 ​​of the upper spherical cap 2 and the lower spherical cap 1, respectively. The outer helical spring 3 within the helical spring unit is sleeved on the outer periphery of the inner helical spring 4 and the spring positioning ring 5. In this embodiment, the inner diameter of the outer helical spring 3 and the outer diameter of the spring positioning ring 5 are in clearance fit, and the inner diameter of the inner helical spring 4 and the outer diameter of the head of the hexagonal socket screw are in clearance fit. The outer helical spring 3 is positioned on the upper spherical cap 2 and the lower spherical cap 1 by the spring positioning ring 5. The inner helical spring 4 is positioned on the upper spherical cap 2 and the lower spherical cap 1 by the head of the hexagonal socket screw.

[0117] like Figure 5 As shown, in this embodiment, the damper 8 includes two symmetrical units. Each damper 8 includes a damper spring 83 and a fixed sleeve 81 and a movable sleeve 82 inserted into each other. The damper spring 83 is located at the center of the fixed sleeve 81 and the movable sleeve 82, and a damping medium 904 is injected into the fixed sleeve 81 and the movable sleeve 82. The lower part of the fixed sleeve 81 is a base plate 801, which is a circular plate. A spherical boss is provided at the center of the lower part of the base plate 801, and the upper periphery of the base plate 801 is a plane with a circular boss at the center of the plane. The fixed sleeve 81 is composed of several concentrically arranged fixed sleeve steel pipes 802, which are welded to the base plate 801 to form a whole. The upper part of the movable sleeve 82 is a top plate 901, which is a circular plate. A spherical boss is also provided at the center of the top plate 901. The lower perimeter of the top plate is flat, and a circular boss is also provided at the center of the flat surface. The movable sleeve 82 is composed of several concentrically arranged movable sleeve steel pipes 902, which are welded to the top plate 901 to form a whole. A mandrel 905 extends downward from the top plate 901, and the damper spring 83 is sleeved on the mandrel 905. The spherical bosses at both ends of the damper 8 are respectively positioned on the inner spherical surface of the upper spherical cap 2 and the inner spherical surface of the lower spherical cap 1, thus forming a complete spherical cap.

[0118] In this embodiment, as Figure 1-2 As shown, an upper seat plate 7 and a lower seat plate 6 are respectively provided on the upper side of the upper spherical crown 2 and the lower side of the lower spherical crown 1. The lower part of the upper seat plate 7 and the upper part of the lower seat plate 6 are both spherical surfaces, and annular retaining rings 701 are provided around the periphery of each spherical surface. The other side of the upper seat plate 7 or the lower seat plate 6 is a flat surface, and trapezoidal flanges 706 are evenly distributed around its periphery. Mounting holes are provided on the trapezoidal flanges 706. Arc-shaped flanges 703 are also evenly distributed around the periphery of the upper seat plate 7 or the lower seat plate 6 and between adjacent trapezoidal flanges 706. Several U-shaped holes 704 are distributed on the arc-shaped flanges 703, and circular countersunk holes 705 are provided on the top of the U-shaped holes 704. Spherical stainless steel plates 702 are fixed to the lower surface of the upper seat plate 7 and the upper surface of the lower seat plate 6 with screws. The spherical liner plate 101 and the corresponding spherical stainless steel plate 702 form a friction pair.

[0119] During construction, such as Figure 1 and Figure 4 As shown, a tie rod 100 is installed between the U-shaped holes 704 of the upper seat plate 7 and the lower seat plate 6. The tie rod 100 is fixed to the circular countersunk hole 705 by washers and nuts 300 at both ends. After construction is completed, all tie rods 100 can be removed.

[0120] like Figure 6-9 As shown, its damper exhibits significant energy dissipation and hysteresis effects. In this embodiment, the damper and connecting component are connected by a ball joint, which, under the action of spring force, can achieve a gapless connection in any direction, thereby meeting the requirements of subway vibration with high frequency and small amplitude without changing the vertical stiffness of the support.

[0121] Example 2

[0122] This embodiment of a vibration-controlled friction pendulum seismic isolation bearing may or may not have shear-resistant structural measures between the upper bearing plate 7 and the lower bearing plate 6. Other structural features are the same as in Embodiment 1 and will not be described in detail here.

[0123] The formula for calculating the restoring force of a vibration-controlled friction pendulum isolation bearing is as follows:

[0124]

[0125] In the formula:

[0126] F – Restoring force, measured in kilonewtons (kN).

[0127] P – Vertical load on the support, measured in kilonewtons (kN).

[0128] R – Equivalent radius of curvature, in millimeters (mm)

[0129] D – Horizontal displacement of the support, in millimeters (mm)

[0130] μ – coefficient of kinetic friction, unitless.

[0131] sng—a symbolic function; when (D) > 1, sng(D) = 1; when (D) = 0, sng(D) = 0; the horizontal load borne by the vibration-controlled friction pendulum support spring assembly is:

[0132] F V =K h D

[0133] In the formula:

[0134] Fv – The horizontal load borne by the support helical spring unit and damper, measured in kilonewtons (kN) or kN. h —Horizontal stiffness of the support helical spring unit and damper, in kilonewtons per millimeter (kN / mm).

[0135] D – Horizontal displacement of the support, in millimeters (mm).

[0136] Shear-resistant structural measures are not required between the upper bearing plate 7 and the lower bearing plate 6 when the following conditions are met:

[0137] kF v >F

[0138] In the formula:

[0139] k – coefficient, ranging from 0.6 to 0.8, with the minimum value taken when the coefficient of kinetic friction is low.

[0140] Example 3

[0141] The assembly method of a vibration-controlled friction pendulum isolation bearing according to this embodiment includes the following steps:

[0142] S1: Thoroughly clean the inspected and qualified parts to remove surface oil stains and dirt.

[0143] S2: Install the spherical stainless steel plate 702 sequentially on the lower seat plate 6 and the upper seat plate 7, and install the spherical liner 101 on the upper spherical crown and the lower spherical crown respectively.

[0144] S3 secures the spring positioning ring 5 to the upper spherical cap 2 and the lower spherical cap 1 respectively using screws. The circular boss on the spring positioning ring 5 has an overfit with the corresponding grooves on the upper and lower spherical caps 2 and 1. If a large gap is found between the spring positioning ring 5 and the grooves on the upper and lower spherical caps during assembly, the spring positioning ring 5 should be replaced. If the gap between the spring positioning ring 5 and the groove is large, the spring positioning ring 5 may shift under seismic forces, potentially causing the connection to loosen.

[0145] S4: Install the lower spherical crown 1 on the spherical surface of the lower seat plate 6, ensuring that the lower spherical crown 1 and the lower seat plate 6 are concentric.

[0146] S5: Install the outer helical spring 3, the inner helical spring 4, and the damper 8 onto the lower spherical crown 1 in sequence.

[0147] S6: Install the upper spherical crown 2. During installation, the spring positioning ring 5 should be accurately positioned with the outer helical spring 3, the inner helical spring 4, and the damper 8.

[0148] S7: Install the upper seat plate 7, ensuring that the upper seat plate 7 is concentric with the upper spherical crown 2.

[0149] S8: Load the components that have completed the above installation process onto the press to the design load.

[0150] S9: Check the coaxiality of the spherical crown with the upper and lower seat plates. After confirming that there is no error, install the dust cover and tighten it with a fastening ring.

[0151] S10: Install tie rod 100. Install washers and nuts on both ends of tie rod 100 respectively. Insert tie rod 100 into the U-shaped holes 704 on the arc-shaped flanges 703 of the upper seat plate 7 and the lower seat plate 6. The washers are positioned by the circular countersunk holes 705 on the U-shaped holes 704 to ensure that tie rod 100 will not slip. Then tighten all nuts evenly to carry out the construction and installation of the vibration dual-control friction pendulum seismic isolation bearing.

[0152] S11: After construction is completed, remove all tie rods 100.

[0153] Example 4

[0154] like Figure 10 As shown, another type of vibration-controlled friction pendulum isolation support in this embodiment does not include the damper 8, and the helical spring units are arranged in a hexagonal pattern. Other structures and connection methods are the same as in Embodiment 1, and will not be described in detail here.

[0155] The formula for calculating the restoring force of the vibration-controlled friction pendulum isolation bearing is as follows:

[0156]

[0157] In the formula:

[0158] F – Restoring force, measured in kilonewtons (kN).

[0159] P – Vertical load on the support, measured in kilonewtons (kN).

[0160] R – Equivalent radius of curvature, in millimeters (mm)

[0161] D – Horizontal displacement of the support, in millimeters (mm)

[0162] μ – coefficient of kinetic friction, dimensionless;

[0163] sng—a symbolic function; when (D) > 1, sng(D) = 1; when (D) = 0, sng(D) = 0; the horizontal load borne by the vibration-controlled friction pendulum support spring assembly is:

[0164] F V =K h D

[0165] In the formula:

[0166] Fv — The horizontal load borne by the support helical spring unit, measured in kilonewtons (kN).

[0167] K h —Horizontal stiffness of the support helical spring unit, in kilonewtons per millimeter (kN / mm).

[0168] D – Horizontal displacement of the support, in millimeters (mm);

[0169] Shear-resistant structural measures are not required between the upper bearing plate 7 and the lower bearing plate 6 when the following conditions are met:

[0170] kF v >F

[0171] In the formula:

[0172] k – coefficient, ranging from 0.6 to 0.8, with the minimum value taken when the coefficient of kinetic friction is low.

[0173] The assembly method of this vibration-controlled friction pendulum seismic isolation bearing includes the following steps:

[0174] S1: Thoroughly clean the inspected and qualified parts to remove surface oil stains and dirt;

[0175] S2: Install the spherical stainless steel plate 702 sequentially on the lower seat plate 6 and the upper seat plate 7 respectively, and install the spherical liner plate 101 on the upper spherical crown and the lower spherical crown respectively;

[0176] S3 fixes the spring positioning ring to the upper spherical crown 2 and the lower spherical crown 1 respectively with screws; the circular boss on the spring positioning ring 5 and the corresponding grooves on the upper spherical crown 2 and the lower spherical crown 1 are fitted together by an overfit.

[0177] S4: Install the lower spherical crown 1 on the spherical surface of the lower seat plate 6, ensuring that the lower spherical crown 1 and the lower seat plate 6 are concentric;

[0178] S5: Install the outer helical spring 3 and the inner helical spring 4 sequentially onto the lower spherical crown 1;

[0179] S6: Install the upper spherical crown 2. During installation, the spring positioning ring 5 should be accurately positioned with the outer helical spring 3 and the inner helical spring 4.

[0180] S7: Install the upper seat plate 7, ensuring that the upper seat plate 7 is concentric with the upper spherical crown 2;

[0181] S8: Load the components that have completed the above installation process onto the press to the design load;

[0182] S9: Check the coaxiality of the spherical crown with the upper and lower seat plates. After confirming that there is no error, install the dust cover 9 and tighten it with the fastening ring.

[0183] S10: Install tie rod 100; install washers and nuts on both ends of tie rod 100 respectively, and insert tie rod 100 into the U-shaped hole 704 on the arc flange 703 of the upper seat plate 7 and the lower seat plate 6. The washers are positioned by the circular countersunk hole 705 on the U-shaped hole 704 to ensure that tie rod 100 will not slip off. Then tighten all nuts evenly to carry out the construction and installation of the vibration dual-control friction pendulum seismic isolation bearing.

[0184] S11: After construction is completed, remove all tie rods 100.

[0185] In embodiments 1-4, a preferred spring structure is selected, resulting in a relatively small area occupied by the springs under constant load. The relative positions of the springs are rationally arranged and matched with the friction pendulum, ensuring that the same number of springs occupy a small area. Research shows that a hexagonal arrangement of the springs is optimal.

[0186] Research and experiments show that by selecting a spring structure with high horizontal stiffness, shear-resistant structural measures are unnecessary. Eliminating shear-resistant structural measures can effectively alleviate the problem of incompatibility between the load-bearing capacity of the helical spring and the friction pendulum.

[0187] The above are merely preferred embodiments of the present invention and do not constitute any limitation on the structure of the present invention. The arrangement and quantity of the present invention are not limited to this example and can be optimized according to actual engineering conditions. Any modifications, equivalent changes, and decorations made to the above embodiments based on the technical principles of the present invention, without departing from the scope of the present invention, are still within the scope of the present invention.

Claims

1. A vibration-controlled friction pendulum isolation bearing, comprising an upper bearing plate (7), a lower bearing plate (6), and a spherical cap between the two, characterized in that: The spherical crown includes an outer helical spring (3), an inner helical spring (4), a damper (8), an upper spherical crown (2), and a lower spherical crown (1); the inner helical spring (4) and the outer helical spring (3) are centrally fitted together to form a helical spring unit; multiple sets of helical spring units are provided inside the spherical crown. The lower part of the upper spherical crown (2) and the upper part of the lower spherical crown (1) are both flat. Several circular grooves are provided on the flat surface. A threaded hole is provided in the center of the groove. A spring positioning ring (5) is provided on the lower part of the upper spherical crown (2) and the upper part of the lower spherical crown (1). A circular boss that matches the circular grooves of the upper spherical crown (2) and the lower spherical crown (1) is provided on the spring positioning ring (5). The spring positioning ring (5) is fixed to the lower part of the upper spherical crown (2) with an internal hexagon screw. The upper surface of the upper spherical cap (2) and the lower surface of the lower spherical cap (1) are spherical surfaces. The spherical surface is provided with a concentric and recessed spherical groove, and a spherical liner (101) is provided in the spherical groove. The inner helical spring (4) in the helical spring unit has its upper and lower ends positioned between the spring positioning rings (5) of the upper spherical crown (2) and the lower spherical crown (1), respectively. The outer helical spring (3) in the helical spring unit is sleeved on the outer periphery of the inner helical spring (4) and the spring positioning rings (5). The damper (8) includes a damper spring (83) and a fixed sleeve (81) and a movable sleeve (82) inserted into each other. The damper spring (83) is located at the center of the fixed sleeve (81) and the movable sleeve (82), and a damping medium (904) is injected into the fixed sleeve (81) and the movable sleeve (82). The lower part of the fixed sleeve (81) is a base plate (801), and a spherical boss is provided at the center of the bottom of the base plate (801). The upper periphery of the base plate (801) is a plane, and a circular boss is provided at the center of the plane. The fixed sleeve (81) is composed of several concentrically arranged fixed sleeve steel pipes (802), and the fixed sleeve steel pipes (802) are welded to the base plate (801) to form an integral whole. The upper part of the moving sleeve (82) is a top plate (901), which is a circular plate. A spherical boss is also provided at the center of the top plate (901). The lower periphery of the top plate is a plane, and a circular boss is also provided at the center of the plane. The moving sleeve (82) is composed of several concentrically arranged moving sleeve steel pipes (902). The moving sleeve steel pipes (902) are welded to the top plate (901) to form an integral whole. A mandrel (905) extends downward from the top plate (901), and the damper spring (83) is sleeved on the mandrel (905). An upper seat plate (7) and a lower seat plate (6) are respectively provided on the upper side of the upper spherical crown (2) and the lower side of the lower spherical crown (1); the lower part of the upper seat plate (7) and the upper part of the lower seat plate (6) are both spherical, and annular retaining rings (701) are provided around the perimeter of the spherical surface. The other side of the upper seat plate (7) or the lower seat plate (6) is a flat surface, and a trapezoidal flange (706) is provided around its perimeter. The trapezoidal flange (706) is provided with mounting holes; the upper seat plate (7) or the lower seat plate (6) Around the periphery of the upper plate (7) and between adjacent trapezoidal flanges (706), arc-shaped flanges (703) are evenly arranged. Several U-shaped holes (704) are distributed on the arc-shaped flanges (703). Circular countersunk holes (705) are provided on the top of the U-shaped holes (704). Spherical stainless steel plates (702) are fixed to the lower surface of the upper plate (7) and the upper surface of the lower plate (6) with screws. The spherical liner (101) and the corresponding spherical stainless steel plate (702) form a friction pair. The formula for calculating the restoring force of the vibration-controlled friction pendulum seismic isolation bearing is as follows: In the formula: F —Resting force, measured in kilonewtons (kN). P —The vertical load on the support, expressed in kilonewtons (kN). R —Equivalent radius of curvature, in millimeters (mm) D —Horizontal displacement of the support, in millimeters (mm) μ —Coefficient of kinetic friction, dimensionless; sng—— Flag, symbolic function, when (D) > 1, sng (D)=1; when (D)=0, sng (D)=0; The horizontal load borne by the vibration-controlled friction pendulum support spring assembly is: In the formula: Fv—— The horizontal load borne by the support helical spring unit and damper is expressed in kilonewtons (kN). K h —— The horizontal stiffness of the support helical spring unit and damper, in kilonewtons per millimeter (kN / mm). D — Horizontal displacement of the support, in millimeters (mm); Shear-resistant structural measures are not required between the upper seat plate (7) and the lower seat plate (6) when the following conditions are met: In the formula: k — Coefficient, taken as 0.6 to 0.8, with the minimum value taken when the coefficient of kinetic friction is low.

2. The vibration-controlled friction pendulum isolation bearing according to claim 1, characterized in that: The spherical liner (101) is a PTFE plate, which is fixed to the upper spherical crown (2) and the lower spherical crown (1) by screws or adhesive.

3. The vibration-controlled friction pendulum isolation bearing according to claim 1, characterized in that: The upper periphery of the upper spherical crown (2) and the lower periphery of the lower spherical crown (1) are spherical or conical surfaces, which are concentric with the spherical groove, but their radii are smaller than the radius of the spherical groove.

4. The vibration-controlled friction pendulum isolation bearing according to claim 1, characterized in that: The spherical protrusions at both ends of the damper (8) are respectively positioned on the inner spherical surface of the upper spherical cap (2) and the inner spherical surface of the lower spherical cap (1), thus forming a complete spherical cap.

5. The vibration-controlled friction pendulum isolation bearing according to claim 4, characterized in that: The base plate (801) is a circular plate.

6. The vibration-controlled friction pendulum isolation bearing according to claim 1, characterized in that: The inner diameter of the outer helical spring (3) is clearance-fitted with the outer diameter of the spring positioning ring (5), and the inner diameter of the inner helical spring (4) is clearance-fitted with the outer diameter of the head of the internal hexagonal screw.

7. A vibration-controlled friction pendulum isolation bearing according to claim 6, characterized in that: The outer helical spring (3) is positioned on the upper spherical crown (2) and the lower spherical crown (1) by a spring positioning ring (5); the inner helical spring (4) is positioned on the upper spherical crown (2) and the lower spherical crown (1) by the head of the internal hexagonal screw.

8. The vibration-controlled friction pendulum isolation bearing according to claim 1, characterized in that: During construction, a tie rod (100) is provided between the U-shaped hole (704) of the upper seat plate (7) and the lower seat plate (6). The tie rod (100) is fixed to the circular countersunk hole (705) by washers and nuts at both ends. After construction is completed, all tie rods (100) can be removed.

9. The vibration-controlled friction pendulum isolation bearing according to claim 1, characterized in that: The helical spring units are arranged in a hexagonal shape.

10. A vibration-controlled friction pendulum isolation bearing according to claim 1, characterized in that: Shear-resistant structural measures may or may not be provided between the upper seat plate (7) and the lower seat plate (6).

11. A method for assembling the vibration-controlled friction pendulum isolation bearing as described in claim 7, characterized in that, Includes the following steps: S1: Thoroughly clean the inspected and qualified parts to remove surface oil stains and dirt; S2: Install the spherical stainless steel plate (702) sequentially on the lower seat plate (6) and the upper seat plate (7), and install the spherical liner plate (101) on the upper spherical crown and the lower spherical crown respectively; S3 fixes the spring positioning ring to the upper spherical crown (2) and the lower spherical crown (1) respectively with screws; the circular boss on the spring positioning ring (5) and the corresponding grooves on the upper spherical crown (2) and the lower spherical crown (1) are fitted with transition fit; S4: Install the lower spherical crown (1) on the spherical surface of the lower seat plate (6) to ensure that the lower spherical crown (1) is concentric with the lower seat plate (6); S5: Install the outer helical spring (3), inner helical spring (4), and damper (8) sequentially on the lower spherical crown (1); S6: Install the upper spherical crown (2). During installation, the spring positioning ring (5) should be accurately positioned with the outer helical spring (3), the inner helical spring (4), and the damper (8). S7: Install the upper seat plate (7) and ensure that the upper seat plate (7) is concentric with the upper spherical crown (2); S8: Load the components that have completed the above installation process onto the press to the design load; S9: Check the coaxiality of the spherical crown with the upper and lower seat plates. After confirming that there is no error, install the dust cover (9) and tighten it with a fastening ring. S10: Install tie rod (100); Install washers and nuts on both ends of tie rod (100) respectively, and insert tie rod (100) into U-shaped holes (704) on the arc flange (703) of upper seat plate (7) and lower seat plate (6). The washers are positioned by the circular countersunk hole (705) on the U-shaped hole (704) to ensure that tie rod (100) will not slip. Then tighten all nuts evenly and carry out the construction and installation of vibration double control friction pendulum seismic isolation bearing. S11: After construction is completed, remove all tie rods (100).

12. A vibration-controlled friction pendulum isolation bearing, comprising an upper bearing plate (7), a lower bearing plate (6), and a spherical cap between the two, characterized in that: The spherical crown includes an outer helical spring (3), an inner helical spring (4), an upper spherical crown (2), and a lower spherical crown (1); the inner helical spring (4) and the outer helical spring (3) are centrally fitted together to form a helical spring unit; multiple sets of helical spring units are provided inside the spherical crown. The lower part of the upper spherical crown (2) and the upper part of the lower spherical crown (1) are both flat. Several circular grooves are provided on the flat surface. A threaded hole is provided in the center of the groove. A spring positioning ring (5) is provided on the lower part of the upper spherical crown (2) and the upper part of the lower spherical crown (1). A circular boss that matches the circular grooves of the upper spherical crown (2) and the lower spherical crown (1) is provided on the spring positioning ring (5). The spring positioning ring (5) is fixed to the lower part of the upper spherical crown (2) with an internal hexagon screw. The inner helical spring (4) in the helical spring unit has its upper and lower ends positioned between the spring positioning rings (5) of the upper spherical crown (2) and the lower spherical crown (1), respectively. The outer helical spring (3) in the helical spring unit is sleeved on the outer periphery of the inner helical spring (4) and the spring positioning rings (5). The upper surface of the upper spherical crown (2) and the lower surface of the lower spherical crown (1) are spherical surfaces. The spherical surface is provided with a concentric and recessed spherical groove. A spherical liner (101) is provided in the spherical groove. The periphery of the upper part of the upper spherical crown (2) and the periphery of the lower part of the lower spherical crown (1) are spherical or conical surfaces. They are concentric with the spherical groove, but their radii are smaller than the radius of the spherical groove. The inner diameter of the outer helical spring (3) is clearance-fitted with the outer diameter of the spring positioning ring (5). The inner diameter of the inner helical spring (4) is clearance-fitted with the outer diameter of the head of the internal hexagonal screw. The outer helical spring (3) is positioned on the upper spherical crown (2) and the lower spherical crown (1) by the spring positioning ring (5). The inner helical spring (4) is positioned on the upper spherical crown (2) and the lower spherical crown (1) by the head of the internal hexagonal screw. An upper seat plate (7) and a lower seat plate (6) are respectively provided on the upper side of the upper spherical crown (2) and the lower side of the lower spherical crown (1); the lower part of the upper seat plate (7) and the upper part of the lower seat plate (6) are both spherical, and annular retaining rings (701) are provided around the perimeter of the spherical surface. The other side of the upper seat plate (7) or the lower seat plate (6) is a plane, and a trapezoidal flange (706) is provided around its perimeter. The trapezoidal flange (706) is provided with mounting holes; an arc-shaped flange (703) is also provided around the perimeter of the upper seat plate (7) or the lower seat plate (6) and between adjacent trapezoidal flanges (706). A number of U-shaped holes (704) are distributed on the arc-shaped flange (703). The upper surface of the U-shaped hole (704) is... A circular countersunk hole (705) is provided. The lower surface of the upper seat plate (7) and the upper surface of the lower seat plate (6) are both fixed with spherical stainless steel plates (702) by screws. The spherical liner (101) and the corresponding spherical stainless steel plate (702) form a friction pair. During construction, a tie rod (100) is provided between the U-shaped hole (704) of the upper seat plate (7) and the lower seat plate (6). The tie rod (100) is fixed to the circular countersunk hole (705) by washers and nuts at both ends. After construction is completed, all tie rods (100) can be removed. The helical spring unit is arranged in a hexagonal shape. Shear-resistant structural measures may or may not be provided between the upper seat plate (7) and the lower seat plate (6).

13. A vibration-controlled friction pendulum isolation bearing according to claim 12, characterized in that: The formula for calculating the restoring force of the vibration-controlled friction pendulum seismic isolation bearing is as follows: In the formula: F —Resting force, measured in kilonewtons (kN). P —The vertical load on the support, expressed in kilonewtons (kN). R —Equivalent radius of curvature, in millimeters (mm) D —Horizontal displacement of the support, in millimeters (mm) μ —Coefficient of kinetic friction, dimensionless; sng—— Flag, symbolic function, when (D) > 1, sng (D)=1; when (D)=0, sng (D)=0; The horizontal load borne by the vibration-controlled friction pendulum support spring assembly is: In the formula: Fv—— The horizontal load borne by the support helical spring unit is expressed in kilonewtons (kN). K h —— The horizontal stiffness of the support helical spring unit, expressed in kilonewtons per millimeter (kN / mm). D — Horizontal displacement of the support, in millimeters (mm); Shear-resistant structural measures are not required between the upper seat plate (7) and the lower seat plate (6) when the following conditions are met: In the formula: k — Coefficient, taken as 0.6 to 0.8, with the minimum value taken when the coefficient of kinetic friction is low.

14. A method for assembling the vibration-controlled friction pendulum isolation bearing as described in claim 13, characterized in that, Includes the following steps: S1: Thoroughly clean the inspected and qualified parts to remove surface oil stains and dirt; S2: Install the spherical stainless steel plate (702) sequentially on the lower seat plate (6) and the upper seat plate (7), and install the spherical liner plate (101) on the upper spherical crown and the lower spherical crown respectively; S3 fixes the spring positioning ring to the upper spherical crown (2) and the lower spherical crown (1) respectively with screws; the circular boss on the spring positioning ring (5) and the corresponding grooves on the upper spherical crown (2) and the lower spherical crown (1) are fitted with transition fit; S4: Install the lower spherical crown (1) on the spherical surface of the lower seat plate (6) to ensure that the lower spherical crown (1) is concentric with the lower seat plate (6); S5: Install the outer helical spring (3) and the inner helical spring (4) sequentially on the lower spherical crown (1); S6: Install the upper spherical crown (2). During installation, the spring positioning ring (5) should be accurately positioned with the outer helical spring (3) and the inner helical spring (4). S7: Install the upper seat plate (7) and ensure that the upper seat plate (7) is concentric with the upper spherical crown (2); S8: Load the components that have completed the above installation process onto the press to the design load; S9: Check the coaxiality of the spherical crown with the upper and lower seat plates. After confirming that there is no error, install the dust cover (9) and tighten it with a fastening ring. S10: Install tie rod (100); Install washers and nuts on both ends of tie rod (100) respectively, and insert tie rod (100) into U-shaped holes (704) on the arc flange (703) of upper seat plate (7) and lower seat plate (6). The washers are positioned by the circular countersunk hole (705) on the U-shaped hole (704) to ensure that tie rod (100) will not slip. Then tighten all nuts evenly and carry out the construction and installation of vibration double control friction pendulum seismic isolation bearing. S11: After construction is completed, remove all tie rods (100).

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