An assembled concrete frame structure using vibration isolation and shock absorption dual-control beam-column nodes

Abstract

An assembled concrete frame structure adopting a vibration isolation and shock absorption double-control beam-column node relates to the field of shock absorption and vibration isolation technology in construction engineering, including prefabricated columns, prefabricated beams, prefabricated floor slabs, hidden corbels, thick rubber bearings, friction pendulums, viscoelastic vertical limit devices, and U-shaped bent energy-absorbing diamond-shaped hole steel plates. The present invention combines the application of vibration isolation, dynamic vibration absorption and energy dissipation and shock absorption mechanisms, and combines replaceable and other technologies to achieve multi-level seismic toughness targets under different defense levels of building structures. Under frequent to rare intensities, the structure can be made to have the ability to immediately restore its use function to quickly restore its use function. Under extremely rare earthquakes, the integrity of the building is prioritized to avoid collapse and protect life safety, but the damage is still limited to replaceable energy-absorbing components, and the structural components are in a state that is easier to repair or can be repaired.

Description

Technical Field

[0001] The present invention belongs to the technical field of vibration reduction and isolation in construction engineering, and in particular relates to an assembled concrete frame structure adopting vibration isolation and shock absorption double-control beam-column nodes. Background Art

[0002] Throughout their lifecycle, building structures are affected by ambient vibration and earthquakes. Ambient vibrations persist throughout the lifecycle of a building, while earthquakes, as an accidental event, occur with a very low probability throughout the building's lifecycle. However, both can have a significant impact on the building's functionality and safety. For example, ambient vibrations caused by rail transit (subways, viaducts, etc.) have become a significant factor affecting the quality of the residential environment. The resulting ground structure vibrations significantly reduce the comfort of surrounding residential buildings. Furthermore, although earthquakes are rare, their occurrence can have serious consequences, not only impacting the normal functionality of the building structure but also reducing its safety. Based on the concept of recoverable functional seismic protection or seismic resilience design, currently proposed prefabricated concrete frame structures utilize technologies such as rocking, self-resetting, energy dissipation, and replaceability, which have, to a certain extent, improved their seismic resilience. However, these frame structures only control responses to earthquakes, neglecting the control of environmental vibration responses. On the other hand, environmental vibrations of building structures are mainly addressed through vertical vibration isolation technology. However, actual engineering applications and on-site testing have shown that the frequency bands that affect structural comfort are mainly low-frequency bands (1Hz to 20Hz), which cannot be effectively addressed by the current overall base vertical vibration isolation. Furthermore, in order to achieve lower-frequency vibration isolation, the structure must be placed in a lower frequency band, which will result in larger vertical displacements, seriously affecting the safety of the structure under horizontal earthquakes. In addition, the performance of new three-dimensional seismic isolation bearings has yet to be verified, and further research is needed for their application in engineering practice. To this end, it is urgent to address the comfort issues caused by environmental vibrations of building structures and the rapid recovery issues after earthquakes for seismic resilience design, while controlling the impact of environmental vibrations and seismic vibrations on the serviceability and safety of the structure. Summary of the Invention

[0003] To overcome the shortcomings of the existing technology, the present invention discloses an assembled concrete frame structure with dual-control beam-column nodes for vibration isolation and shock absorption, which can realize environmental vibration control in normal use scenarios and structural response control in earthquake scenarios, thereby improving the comfort and safety of the building structure.

[0004] To achieve the above object, the technical solution of the present invention is:

[0005] An assembled concrete frame structure using a vibration isolation and shock absorption double-control beam-column node, comprising precast columns, precast beams, precast floor slabs, hidden corbels, and:

[0006] Thick rubber bearings: Thick rubber bearings are placed between the precast beams and the hidden corbels and form the first vibration isolation structure, which is used to isolate the low-frequency to high-frequency environmental vibrations transmitted from the precast columns;

[0007] Friction pendulum: The friction pendulum is placed between the thick rubber bearing and the hidden corbel, and is used to start energy dissipation under the action of frequent earthquakes, achieving immediate recovery of structural deformation under small earthquakes;

[0008] Viscoelastic vertical limiter: The viscoelastic vertical limiter connects the hidden corbel and precast beam from the side and is used to cooperate with the friction pendulum to initiate the second-order enhanced energy dissipation under the action of the design intensity earthquake. During the second-order enhanced energy dissipation, the viscoelastic vertical limiter and the precast floor slab form a TMD damping structure, and the damage is concentrated on the viscoelastic vertical limiter;

[0009] U-shaped curved energy-absorbing diamond hole steel plate: The U-shaped curved energy-absorbing diamond hole steel plate connects the hidden corbel and prefabricated beam through the side and bottom, and is used to initiate the third-order enhanced energy absorption under the action of rare intensity earthquakes. In the third-order enhanced energy absorption, the damage is concentrated on the viscoelastic vertical limit device and the U-shaped curved energy-absorbing diamond hole steel plate.

[0010] Preferably, L-shaped overlapping grooves are respectively provided at the bottom of both ends of the prefabricated beam, and an embedded steel plate is provided at the top of the hidden corbel. The embedded steel plate is fixedly connected to the bottom end of the friction pendulum, and the top end of the friction pendulum is fixedly connected to the lower surface of the horizontal section of the overlapping groove.

[0011] Preferably, the horizontal section is provided with a through groove running through the upper surface of the prefabricated floor slab, the thick rubber bearing is arranged in the through groove, and the bottom end of the thick rubber bearing is clamped with the top end of the friction pendulum, and the top end of the thick rubber bearing is fixedly connected to the prefabricated floor slab.

[0012] Preferably, the viscoelastic vertical limit device includes an upper plate and a lower plate, the upper plate is provided with a circular hole, and is fixedly connected to the side of the end of the precast beam by a first bolt passing through the circular hole, the lower plate is provided with a first elliptical hole, a limit pin is passed through the first elliptical hole, and the limit pin is fixedly connected to the side of the hidden bull leg, and the timing of the viscoelastic vertical limit device participating in the cooperative friction pendulum to perform second-order enhanced energy consumption is limited by setting the length of the first elliptical hole, a vertical locking strip is provided between the upper plate and the lower plate, and there are two lower plates, the upper parts of the two lower plates are clamped on both sides of the lower part of the upper plate, the vertical locking strip is horizontally arranged on both sides of the lower part of the upper plate, one end is welded and fixed to the upper plate, and the other end is slidably connected to a slide groove preset on the inner surface of the lower plate and arranged horizontally, and viscoelastic material is filled between the lower part of the upper plate and the upper part of the lower plate.

[0013] Preferably, the U-shaped bent energy-absorbing diamond hole steel plate includes a T-shaped connecting section, a diamond metal steel plate, and a cover plate. The two wing plates of the T-shaped connecting section are provided with a second elliptical hole, and the diamond metal steel plate is provided with a plurality of diamond holes. The two wing plates of the T-shaped connecting section are respectively clamped between the lower parts of the two lower plates on both sides. The second elliptical hole is opposite to the first elliptical hole one by one, and a limiting pin is passed through them together. The length of the second elliptical hole is greater than the length of the first elliptical hole. By setting the length of the second elliptical hole, the timing for the U-shaped bent energy-absorbing diamond hole steel plate to participate in the third-order enhanced energy consumption is limited; the web of the T-shaped connecting section fits the lower surface of the hidden corbel and extends to one side of the lower surface of the prefabricated beam. The lower surface of the hidden corbel and the lower surface of the prefabricated beam are respectively provided with embedded pins. A third elliptical hole is provided on the web along the length direction of the hidden corbel and the prefabricated beam, and the embedded pins all pass through the third elliptical hole. The embedded pins at both ends are at the same distance from the ends of the corresponding third elliptical holes. By setting the length of the third elliptical hole, the embedded pins and the ends of the third elliptical hole are kept at a set distance, which promotes the U-shaped bending energy-absorbing diamond hole steel plate to maintain the connection between the hidden corbel and the prefabricated beam in rare earthquakes or stronger earthquakes, that is, after the second elliptical hole is damaged, the third elliptical hole still keeps the hidden corbel and the prefabricated beam connected; the diamond metal steel plate is fixedly connected to the two side surfaces of the prefabricated beam opposite to the ends of the hidden corbel by second bolts, and the cover plate is located on the outside of the wing plate and the diamond metal steel plate, and the wing plate and the diamond metal steel plate are connected as a whole by the third bolt.

[0014] Preferably, elastic fillers are provided between the vertical section of the lap joint and the end of the hidden corbel, and between the end of the prefabricated beam where the horizontal section is away from one end of the vertical section and the prefabricated column. The elastic fillers constitute a second vibration isolation structure between the prefabricated floor slab, the prefabricated beam and the prefabricated column, and constitute a third vibration isolation structure between the prefabricated beam and the hidden corbel and the friction pendulum.

[0015] Preferably, a rubber insulation layer is provided on the outer surface of the wing plate, and lubricating oil is provided on the rubber insulation layer.

[0016] Preferably, the prefabricated beams and prefabricated floor slabs are an integral structure, and the frequency range of the environmental vibration from low frequency to high frequency is 1 Hz to 20 Hz.

[0017] The beneficial effects of the assembled concrete frame structure using the vibration isolation and shock absorption dual-control beam-column joint of the present invention are:

[0018] 1. The present invention provides an assembled concrete frame structure with dual-control nodes for vibration isolation and shock absorption, which simultaneously controls the ambient vibration in normal use scenarios and the vibration response in earthquake scenarios, taking into account the requirements of comfort, seismic toughness and safety, and improving the cost-effectiveness of the building structure throughout its life cycle.

[0019] 2. This invention combines vibration isolation, dynamic vibration absorption, and energy dissipation mechanisms, combined with replaceable technologies, to achieve multi-level seismic resilience targets for building structures at varying levels of fortification. This allows the structure to be instantly and rapidly restored to service under conditions ranging from frequent to rare intensities. Under extremely rare earthquakes, building integrity is prioritized to prevent collapse and protect lives, while still limiting damage to replaceable, energy-consuming components, leaving them easily repairable or repairable.

[0020] 3. The thick rubber isolation bearing, friction pendulum, viscoelastic vertical limit device and U-shaped bent energy-absorbing diamond hole steel plate used in the present invention can be used with slight modifications based on the currently very mature products. They are economical, convenient and easy to obtain, and the replacement and maintenance costs are low. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 , a schematic cross-sectional view of the present invention;

[0022] Figure 2 , a front view structural diagram of the present invention;

[0023] Figure 3 , AA-direction cross-sectional structural diagram of the present invention

[0024] Figure 4 , a schematic cross-sectional view of the friction pendulum of the present invention;

[0025] Figure 5 , a perspective structural diagram of the viscoelastic vertical limiting device of the present invention;

[0026] Figure 6 , a schematic cross-sectional view of the present invention along line BB;

[0027] Figure 7 , a schematic diagram of the U-shaped bent energy-dissipating diamond-shaped hole steel plate of the present invention;

[0028] Figure 8 , a schematic diagram of the T-shaped section of the U-shaped bent energy-dissipating diamond-shaped hole steel plate of the present invention;

[0029] Figure 9 , a schematic cross-sectional view of the present invention taken along the CC direction;

[0030] Figure 10 , a schematic diagram of a cross-sectional structure of a multi-span node arrangement of the present invention;

[0031] Figure 11 , a schematic diagram of the front view structure of the multi-span node arrangement of the present invention;

[0032] Figure 12 , a plan layout diagram of the present invention when applied;

[0033] Figure 13 , a detailed partial plan view of the present invention;

[0034] 1. Precast column; 2. Precast beam; 3. Precast floor slab; 4. Hidden corbel; 5. Thick rubber bearing; 6. Friction pendulum; 6-1. Top plate; 6-2. Bottom plate; 6-3. Limiting ring; 6-4. Slider; 6-5. Friction material; 6-6. Sealing material; 7. Elastic filler; 8. Viscoelastic vertical limiting device; 8-1. Upper plate; 8-2. Lower plate; 8-3. Circular hole; 8-4. First elliptical hole; 8-5. Vertical locking strip; 8-6. Viscoelastic material; 8-7. Slide; 9. U Bending energy dissipation diamond hole steel plate; 9-1, second elliptical hole; 9-2, diamond metal steel plate; 9-2-1, diamond hole; 9-2-2, third bolt hole; 9-2-3, fourth bolt hole; 9-3, rubber interlayer; 9-4, cover plate; 9-4-1, first bolt hole; 9-4-2, second bolt hole; 9-5, T-shaped connecting section; 9-5-1, wing plate; 9-5-2, web plate; 9-5-3, third elliptical hole; 10, limit pin; 11, floor slab connector; 12, through groove. DETAILED DESCRIPTION

[0035] The following description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

[0036] In the initial embodiment, Figure 1-13 As shown, the present invention provides an assembled concrete frame structure using a vibration isolation and shock absorption dual-control beam-column node, comprising a precast column 1, a precast beam 2, a precast floor slab 3, a hidden corbel 4, and further comprising:

[0037] Thick rubber bearing 5: The thick rubber bearing 5 is provided between the precast beam and the hidden corbel and constitutes a first vibration isolation structure, which is used to isolate the low-frequency to high-frequency environmental vibration transmitted from the precast column; Figure 3 The figure shows a schematic diagram of the connection of the thick rubber bearing 5. The thick rubber bearing 5 can be a finished product on the market or customized. Since the rubber layer of the thick rubber bearing 5 is thicker, its vertical stiffness is smaller than that of the traditional laminated rubber. The thick rubber bearing has a larger adjustment space and can achieve a better vibration isolation effect in a wider frequency band.

[0038] Friction pendulum 6: The friction pendulum 6 is arranged between the thick rubber support 5 and the hidden bracket, and is used to start energy dissipation under the action of frequent earthquakes, so as to realize the immediate recovery of structural deformation under small earthquakes; Figure 4FIG. 6 is a schematic cross-sectional view of a friction pendulum 6 . The top plate 6 - 1 is connected to the thick rubber support 5 , the bottom plate 6 - 2 is connected to the pre-embedded steel plate on the top of the hidden corbel 4 , and the limit ring 6 - 3 is used to limit the deformation range of the friction pendulum during horizontal movement. The specific principle is as follows: the slider 6 - 4 slides on the surface of the friction material 6 - 5 . When the sliding displacement is too large, the slider 6 - 4 will hit the limit ring 6 - 3 . The limit ring will therefore control the movement range of the slider 6 - 4 within the groove enclosed by the limit ring, thereby playing a role in positional protection. By changing the position of the limit ring 6 - 3 , the deformation size of the slider 6 - 4 can be controlled. The friction pendulum 6 can be a commercially available product.

[0039] Viscoelastic vertical limiter 8: The viscoelastic vertical limiter 8 connects the hidden corbel and precast beam from the side and is used to cooperate with the friction pendulum 6 to initiate the second-order enhanced energy dissipation under the design intensity earthquake. During the second-order enhanced energy dissipation, the viscoelastic vertical limiter 8 and the precast floor slab form a TMD damping structure. Explanation of the TMD damping structure: The floor mass composed of the precast floor slab and the mass it carries, and the viscoelastic vertical limiter 8 form a tuned mass damper (TMD) system. Through the principle of dynamic vibration absorption, the energy input under the horizontal earthquake action is transferred to the viscoelastic vertical limiter 8 for dissipation, and the damage is concentrated in the viscoelastic vertical limiter 8;

[0040] U-shaped bending energy dissipation diamond hole steel plate 9: The U-shaped bending energy dissipation diamond hole steel plate 9 connects the hidden corbel and the prefabricated beam through the side and bottom, and is used to start the third-order enhanced energy dissipation under the action of rare intensity earthquakes. In the third-order enhanced energy dissipation, the damage is concentrated on the viscoelastic vertical limit device 8 and the U-shaped bending energy dissipation diamond hole steel plate 9.

[0041] In a further embodiment, Figure 1 、 2 As shown, L-shaped overlapping grooves are respectively provided at the bottom of both ends of the prefabricated beam 2, and an embedded steel plate is provided at the top of the hidden corbel 4. The embedded steel plate is fixedly connected to the bottom end of the friction pendulum 6, and the top end of the friction pendulum 6 is fixedly connected to the lower surface of the horizontal section of the overlapping groove.

[0042] In a further embodiment, Figure 1 、 3 As shown, the horizontal section is provided with a through groove 12 that passes through the upper surface of the prefabricated floor 3, and the thick rubber bearing 5 is arranged in the through groove 12, and the bottom end of the thick rubber bearing 5 is clamped with the top end of the friction pendulum 6, and the top end of the thick rubber bearing 5 is fixedly connected to the prefabricated floor 3.

[0043] In a further embodiment, Figure 2 、 5As shown in Figure 6, the viscoelastic vertical limit device 8 includes an upper plate 8-1 and a lower plate 8-2. The upper plate 8-1 is provided with a circular hole 8-3 and is fixedly connected to the side of the precast beam end by a first bolt passing through the circular hole. The lower plate 8-2 is provided with a first elliptical hole 8-4, and a limit pin 10 is passed through the first elliptical hole 8-4. The limit pin 10 is fixedly connected to the side of the hidden corbel. The timing of the viscoelastic vertical limit device 8 participating in the coordinated friction pendulum 6 to perform second-order enhanced energy consumption is limited by setting the length of the first elliptical hole 8-4. A vertical locking strip 8-5 is provided between the upper plate and the lower plate. There are two lower plates 8-2. The upper parts of the two lower plates are clamped on both sides of the lower part of the upper plate. The vertical locking strip 8-5 is horizontally arranged on both sides of the lower part of the upper plate, one end is welded to the upper plate, and the other end is slidably connected to a slide groove preset on the inner surface of the lower plate and arranged horizontally. Viscoelastic material 8-6 is filled between the lower part of the upper plate and the upper part of the lower plate. The vertical locking strip 8-5 is used to limit the relative movement between the upper plate and the lower plate only in the horizontal direction.

[0044] In a further embodiment, Figure 2 、 7As shown in , 8 and 9, the U-shaped bent energy-absorbing diamond hole steel plate 9 includes a T-shaped connecting section 9-5, a diamond metal steel plate 9-2, and a cover plate 9-4. The two wing plates 9-5-1 of the T-shaped connecting section 9-5 are provided with a second elliptical hole 9-1, and the diamond metal steel plate 9-2 is provided with a plurality of diamond holes 9-2-1. The two wing plates of the T-shaped connecting section 9-5 are respectively clamped between the lower parts of the two lower plates on both sides. The second elliptical hole 9-1 is opposite to the first elliptical hole 8-4 one by one, and a limiting pin 10 is passed through them together. The length of the second elliptical hole is greater than the length of the first elliptical hole. By setting the length of the second elliptical hole, the timing of the U-shaped bent energy-absorbing diamond hole steel plate 9 participating in the third-order enhanced energy absorption is limited; the web 9-5-2 of the T-shaped connecting section 9-5 fits the lower surface of the dark corbel and extends to one side of the lower surface of the precast beam. The lower surface of the dark corbel and the lower surface of the precast beam The two surfaces are respectively provided with embedded pins, and the web 9-5-2 is provided with a third elliptical hole 9-5-3 along the length of the hidden corbel and the precast beam. The embedded pins all pass through the third elliptical hole 9-5-3, and the embedded pins at both ends are at the same distance from the ends of the corresponding third elliptical holes. By setting the length of the third elliptical hole, the embedded pins and the ends of the third elliptical hole are kept at a set distance, which promotes the U-shaped bending energy-absorbing diamond hole steel plate 9 to maintain the connection between the hidden corbel and the precast beam in rare earthquakes or stronger earthquakes, that is, after the second elliptical hole is damaged, the third elliptical hole still keeps the hidden corbel and the precast beam connected; the diamond metal steel plate 9-2 is fixedly connected to the two side surfaces of the precast beam opposite to the end of the hidden corbel by a second bolt, and the cover plate 9-4 is located on the outside of the wing plate and the diamond metal steel plate 9-2, and the wing plate and the diamond metal steel plate 9-2 are connected as a whole by the third bolt.

[0045] In a further embodiment, Figure 1 、 2 As shown, elastic fillers 7 are provided between the vertical section of the lap joint and the end of the hidden corbel, and between the end of the precast beam at the horizontal section away from one end of the vertical section and the precast column. The elastic fillers 7 constitute a second vibration isolation structure between the precast floor slab, the precast beam and the precast column, and constitute a third vibration isolation structure between the precast beam and the hidden corbel and the friction pendulum 6.

[0046] In a further embodiment, Figure 1 、 2 As shown in , 7, the outer surface of the wing plate is provided with a rubber insulation layer 9-3, and the rubber insulation layer is provided with lubricating oil, which has a vibration isolation effect and reduces friction resistance.

[0047] In a further embodiment, Figure 1 、 2As shown, the precast beams 2 and precast floor slabs 3 form an integral structure. The frequency range of the low- to high-frequency ambient vibrations is 1Hz to 20Hz. The precast floor slabs are integrally connected to the precast beams, preventing damage to the floor slabs due to horizontal deformation in the self-centering structure. The integration of the precast beams and precast slabs eliminates the risk of partial floor collapse. Furthermore, the construction process is simplified.

[0048] The specific working principle of the present invention is:

[0049] Throughout their lifecycle, a building structure primarily experiences normal use and earthquakes. Normal use includes environmental vibrations, both of which exist throughout the lifecycle of the structure. The probability of earthquakes occurring throughout the lifecycle of a building structure varies depending on their intensity. Current regulations primarily consider frequent, design, rare, and extremely rare earthquakes.

[0050] In normal use scenarios, the main comfort problem is caused by vertical vibration of building floors caused by environmental vibrations such as rail transit and viaducts. The present invention connects the floor slabs to prefabricated beams according to the traditional assembly construction method, and the prefabricated beams are connected to the prefabricated columns through thick rubber bearings provided on the prefabricated columns. In this way, the floor assembly consisting of floor slabs and prefabricated beams is placed on the thick rubber bearings as a whole, and vertical vibration isolation is performed by the thick rubber bearings, which can isolate the low-frequency to high-frequency environmental vibrations (1Hz to 20Hz) transmitted by the prefabricated columns. This will greatly improve living comfort.

[0051] In earthquake scenarios, a multi-stage operating mechanism composed of thick rubber isolation pads, friction pendulums, viscoelastic vertical limiters, and U-shaped energy-dissipating diamond-shaped perforated steel plates forms a multi-stage operating mechanism for different seismic intensities. During high-intensity earthquakes, the friction pendulum supports activate energy dissipation, effectively reducing the seismic response under these conditions and enabling immediate restoration of functionality after minor earthquakes. During design-intensity earthquakes, both the friction pendulum and viscoelastic vertical limiters activate energy dissipation, enhancing energy dissipation capacity. Simultaneously, the viscoelastic vertical limiters and floor slabs form a TMD device, achieving dynamic vibration absorption and further reducing seismic response. Because energy dissipation is concentrated in the viscoelastic damper, leaving structural components undamaged, the structure can be restored to service after a simple inspection after earthquakes at design intensities. During rare-intensity earthquakes, the friction pendulum, viscoelastic vertical limiters, and U-shaped energy-dissipating diamond-shaped perforated steel plates all enter operation. By concentrating damage in the viscoelastic vertical limiters and U-shaped energy-dissipating diamond-shaped perforated steel plates, structural damage is avoided. Because the U-shaped, energy-dissipating diamond-shaped perforated steel plates are damaged during the hysteretic energy dissipation process and need to be replaced, the structure requires minimal repairs to restore functionality. Under extremely rare earthquakes, the structural system's performance objective under seismic conditions should shift from seismic toughness to life safety. At this stage, the focus is on improving the structural system's ductility to ensure structural integrity. The U-shaped, energy-dissipating diamond-shaped perforated steel plates consistently connect the precast beams and the hidden corbels, ensuring structural integrity. After an extremely rare earthquake, the friction pendulum, viscoelastic vertical limiters, and U-shaped, energy-dissipating diamond-shaped perforated steel plates will all be damaged to some extent. Therefore, in addition to inspecting and replacing these energy-dissipating components, the entire structure must undergo a safety inspection and seismic evaluation. Therefore, it will take a considerable amount of time for the structure to be restored to functionality after an extremely rare earthquake.

[0052] Note: The above principles are discussed under the premise that the building structure itself has sufficient strength.

Claims

1. An assembled concrete frame structure with a vibration isolation and shock absorption dual-control beam-column node, comprising precast columns, precast beams, precast floor slabs, and hidden corbels, characterized by: Also includes: Thick rubber bearings: Thick rubber bearings are placed between the precast beams and the hidden corbels and form the first vibration isolation structure, which is used to isolate the low-frequency to high-frequency environmental vibrations transmitted from the precast columns; Friction pendulum: The friction pendulum is placed between the thick rubber bearing and the hidden corbel, and is used to start energy dissipation under the action of frequent earthquakes, achieving immediate recovery of structural deformation under small earthquakes; Viscoelastic vertical limiter: The viscoelastic vertical limiter connects the hidden corbel and precast beam from the side and is used to cooperate with the friction pendulum to initiate the second-order enhanced energy dissipation under the action of the design intensity earthquake. During the second-order enhanced energy dissipation, the viscoelastic vertical limiter and the precast floor slab form a TMD damping structure, and the damage is concentrated on the viscoelastic vertical limiter; U-shaped curved energy-absorbing diamond hole steel plate: The U-shaped curved energy-absorbing diamond hole steel plate connects the hidden corbel and prefabricated beam through the side and bottom, and is used to initiate the third-order enhanced energy absorption under the action of rare intensity earthquakes. In the third-order enhanced energy absorption, the damage is concentrated on the viscoelastic vertical limit device and the U-shaped curved energy-absorbing diamond hole steel plate.

2. The assembled concrete frame structure using a vibration isolation and shock absorption dual-control beam-column joint according to claim 1, characterized in that: The bottoms of both ends of the prefabricated beam are respectively provided with L-shaped overlapping grooves, the top of the hidden corbel is provided with an embedded steel plate, the embedded steel plate is fixedly connected to the bottom end of the friction pendulum, and the top of the friction pendulum is fixedly connected to the lower surface of the horizontal section of the overlapping groove.

3. The assembled concrete frame structure using a vibration isolation and shock absorption dual-control beam-column joint according to claim 2, characterized in that: The horizontal section is provided with a through groove running through the upper surface of the prefabricated floor slab, the thick rubber bearing is arranged in the through groove, and the bottom end of the thick rubber bearing is clamped with the top end of the friction pendulum, and the top end of the thick rubber bearing is fixedly connected to the prefabricated floor slab.

4. The assembled concrete frame structure using a vibration isolation and shock absorption dual-control beam-column joint according to claim 3, characterized in that: The viscoelastic vertical limit device includes an upper plate and a lower plate, the upper plate is provided with a circular hole, and is fixedly connected to the side of the end of the precast beam by a first bolt passing through the circular hole, the lower plate is provided with a first elliptical hole, and a limit pin is passed through the first elliptical hole, and the limit pin is fixedly connected to the side of the hidden bull leg, and the timing of the viscoelastic vertical limit device participating in the collaborative friction pendulum to perform second-order enhanced energy consumption is limited by setting the length of the first elliptical hole. A vertical locking strip is provided between the upper plate and the lower plate, and there are two lower plates. The upper parts of the two lower plates are clamped on both sides of the lower part of the upper plate, and the vertical locking strip is horizontally arranged on both sides of the lower part of the upper plate, one end is welded and fixed to the upper plate, and the other end is slidably connected to a slide groove preset on the inner surface of the lower plate and arranged horizontally, and viscoelastic material is filled between the lower part of the upper plate and the upper part of the lower plate.

5. The assembled concrete frame structure using a vibration isolation and shock absorption dual-control beam-column joint according to claim 4, characterized in that: The U-shaped bent energy-absorbing diamond hole steel plate comprises a T-shaped connecting section, a diamond metal steel plate, and a cover plate. The two wing plates of the T-shaped connecting section are provided with a second elliptical hole, and the diamond metal steel plate is provided with a plurality of diamond holes. The two wing plates of the T-shaped connecting section are respectively clamped between the lower parts of the two lower plates on both sides. The second elliptical hole is opposite to the first elliptical hole one by one, and a limiting pin is passed through them together. The length of the second elliptical hole is greater than the length of the first elliptical hole. The time when the U-shaped bent energy-absorbing diamond hole steel plate participates in the third-order enhanced energy consumption is limited by setting the length of the second elliptical hole; the web of the T-shaped connecting section fits the lower surface of the dark corbel and extends to one side of the lower surface of the prefabricated beam. The lower surface of the dark corbel and the lower surface of the prefabricated beam are respectively provided with embedded pins. A third elliptical hole is provided on the plate along the length of the hidden corbel and the prefabricated beam, and the embedded pins all pass through the third elliptical hole. The embedded pins at both ends are at the same distance from the ends of the corresponding third elliptical holes. By setting the length of the third elliptical hole, the embedded pins and the ends of the third elliptical hole are kept at a set distance, which promotes the U-shaped bending energy-absorbing diamond hole steel plate to maintain the connection between the hidden corbel and the prefabricated beam in rare earthquakes or stronger earthquakes, that is, after the second elliptical hole is damaged, the third elliptical hole still keeps the hidden corbel and the prefabricated beam connected; the diamond metal steel plate is fixedly connected to the two side surfaces of the prefabricated beam opposite to the end of the hidden corbel by a second bolt, and the cover plate is located on the outside of the wing plate and the diamond metal steel plate, and the wing plate and the diamond metal steel plate are connected as a whole by the third bolt.

6. The assembled concrete frame structure using vibration isolation and shock absorption dual-control beam-column joints according to claim 5, characterized in that: Elastic fillers are provided between the vertical section of the lap joint and the end of the hidden corbel, and between the end of the prefabricated beam where the horizontal section is away from one end of the vertical section and the prefabricated column. The elastic fillers constitute a second vibration isolation structure between the prefabricated floor slab, the prefabricated beam and the prefabricated column, and constitute a third vibration isolation structure between the prefabricated beam and the hidden corbel and the friction pendulum.

7. The assembled concrete frame structure using vibration isolation and shock absorption dual-control beam-column joints according to claim 6, characterized in that: The outer surface of the wing plate is provided with a rubber insulation layer, and lubricating oil is provided on the rubber insulation layer.

8. The assembled concrete frame structure using vibration isolation and shock absorption dual-control beam-column joints according to any one of claims 1 to 7, characterized in that: The prefabricated beams and prefabricated floor slabs are an integral structure, and the frequency range of the environmental vibration from low frequency to high frequency is 1 Hz to 20 Hz.

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