CN207453604U - A kind of accentric support frame structure - Google Patents

Abstract

The utility model provides an eccentrically supported frame structure, which comprises a frame beam, two support columns and at most two support members connected between the bottom of the frame beam and the support columns. The frame beam includes a first beam body, a second The beam body and the lead rubber damper, two support columns are vertically connected to the first beam body and the second beam body, the first beam body and the second beam body are arranged opposite to each other and the axes coincide, and the lead rubber damper is connected to the Between the first beam body and the second beam body, the lead rubber damper includes two connecting plates arranged in parallel and a composite elastic member arranged between the two connecting plates. The composite elastic member is provided with a lead core, and the lead core The two ends of the two connecting plates are respectively connected to the connecting plates, and the two connecting plates are fixedly connected to the first beam body and the second beam body respectively. The eccentrically braced frame structure can comprehensively utilize a variety of energy dissipation mechanisms to effectively dissipate the seismic energy under the action of an earthquake to protect the safety of the main structure. After the earthquake, its function has the ability to recover by itself, and is easy to repair and replace.

Description

An eccentrically braced frame structure

technical field

The utility model relates to a building structure component, in particular to an eccentric support frame structure.

Background technique

The eccentrically braced frame structure is a common structural form in high-rise buildings in the world. According to Article 8.1.6, Clause 4 of the "Code for Seismic Design of Buildings" GB50011-2010, each support of the eccentrically braced frame should have at least one end connected to the frame beam, and should be connected between the intersection of the support and the beam and the column or within the same span. An energy-dissipating beam segment is formed between another support and the beam intersection. The eccentric bracing frame is based on setting a specific weak part in the steel frame. When the structure enters the elastic-plastic working stage, the weak part enters the energy consumption state before other components to ensure that the support will not fail due to buckling. Under the action of medium and small earthquakes, the structure is in the elastic working stage, and the eccentric support structure has a certain lateral stiffness to ensure that the interstory displacement of the structure meets the requirements of the code; The energy consumption of components yields and dissipates a part of the earthquake input energy, thereby reducing the damage to the overall structure, ensuring that the support will not buckle, and effectively prolonging the duration of the structure's seismic energy consumption.

Under the earthquake, the energy-dissipating beam section of the eccentrically braced frame mainly dissipates energy through the shear deformation of the web, and the residual deformation of the web is relatively large, so it needs to be repaired after the earthquake. If the energy-dissipating beam section is replaced as a whole, there will be a lot of waste, and the construction process is complicated and the construction period is long; moreover, there are usually a series of aftershocks after a major earthquake, and whether the energy-dissipating beam section is replaced in time after a major earthquake is related to safety of people's lives and property.

The energy-dissipating beam section of the eccentrically braced frame is prone to damage, because the force mechanism of the energy-dissipating beam section is relatively complex, and it bears the combined effects of tension, bending, and shearing at the same time, and has a large reciprocating plastic deformation during the earthquake, which makes it difficult to replace it after the earthquake. , repair inconvenience, and the cost is higher.

With the development and application of energy dissipation and shock absorption technology, many scholars at home and abroad have installed energy dissipation and shock absorption devices in eccentrically supported frames to replace traditional energy Deformation makes the shock absorbing device produce shear hysteretic deformation to dissipate the energy input by the earthquake into the main structure and protect the safety of the main structure. At present, the damping devices used by scholars at home and abroad are mainly metal shear dampers, but this type of damper is prone to instability and damage when subjected to the combined effects of tension, bending and shear at the same time. There is a certain security risk.

Utility model content

In order to solve the above-mentioned technical problems, the purpose of this utility model is to provide an eccentrically supported frame structure, which can comprehensively utilize various energy consumption mechanisms to effectively dissipate the seismic energy under the action of an earthquake, so as to protect the main structure Safe, after an earthquake, its function has the ability to recover by itself, and it is easy to repair and replace.

Based on this, the utility model proposes an eccentrically supported frame structure, which includes a frame beam, two support columns and at most two supports connected between the bottom of the frame beam and the support columns, the frame The beam includes a first beam body, a second beam body and a lead rubber damper, the two supporting columns are respectively vertically connected to the first beam body and the second beam body, and the first beam body and the The second beams are arranged oppositely and their axes coincide, the lead rubber damper is connected between the first beam and the second beam, and the lead rubber damper includes two connecting plates arranged in parallel and a composite elastic member arranged between the two connecting plates, the composite elastic member is pierced with a lead core, and the two ends of the lead core are respectively connected to the connecting plates, and the two connecting plates are respectively It is fixedly connected with the first end of the first beam body and the first end of the second beam body.

Optionally, the length of the first beam body is equal to the length of the second beam body, there are two support members, and one end of the two support members is respectively connected to the two support columns, so The other ends of the two supporting pieces are respectively connected to the first end of the first beam body and the first end of the second beam body.

Optionally, the length of the first beam body is greater than the length of the second beam body, the support member is one, and one end of the support member is connected to the first end of the first beam body, The other end of the support member is connected to a support column vertically connected to the first beam body.

Optionally, the composite elastic member includes a plurality of connecting steel plates and a plurality of rubber layers, each of the connecting steel plates and each of the rubber layers are laminated alternately in sequence, and the composite elastic member is connected to the Board fixed connections.

Further, the composite elastic member includes two rubber plates, the two rubber plates are respectively arranged at both ends of the composite elastic member, and the connecting steel plate and the rubber layer are respectively connected vertically to the rubber plates .

Optionally, the lead core includes a lead core body and lead core caps respectively arranged at both ends of the lead core body, the lead core body passes through the connecting steel plate and the rubber layer in turn, and the lead core passes through The lead core cover is fixedly connected with the connecting plate.

Optionally, the axis of the lead core passes through the center of the composite elastic member.

Further, the length of the connecting plate is greater than the length of the composite elastic member, and the center line of the connecting plate perpendicular to its board surface coincides with the axis of the lead core.

Optionally, both the first end of the first beam body and the first end of the second beam body are provided with a pre-embedded plate, and the connecting plate is fixedly connected to the pre-embedded plate.

Optionally, first connection holes are respectively provided at both ends of the connection plate, and second connection holes corresponding to the first connection holes are provided on the embedded plate, and the first connection holes are connected to the first connection holes. High-strength bolts are pierced in the second connecting hole.

Implementation of the utility model embodiment has the following beneficial effects:

The eccentrically supported frame structure of the utility model includes a frame beam, two support columns and at most two supports connected between the bottom of the frame beam and the support columns, and the frame beam includes a first beam body, The second beam body and the lead rubber damper, the two support columns are respectively vertically connected to the first beam body and the second beam body, and the first beam body and the second beam body are arranged opposite to each other and the axes are coincident, the lead rubber damper is connected between the first beam body and the second beam body, and the lead rubber damper includes two connecting plates arranged in parallel and arranged on the two A composite elastic member between the connecting plates, the composite elastic member is provided with a lead core, and the two ends of the lead core are respectively connected to the connecting plates, and the two connecting plates are respectively connected to the first beam body The first end of the second beam is fixedly connected to the first end of the second beam, and the lead rubber damper is used as an energy dissipation beam section of the eccentrically supported frame structure, which can comprehensively utilize various energy dissipation mechanisms to improve the eccentricity The energy dissipation effect of the supporting frame, the lead core rubber damper utilizes the shearing and extrusion deformation energy dissipation of the lead core and the shearing hysteretic deformation energy dissipation of the rubber layer at the same time, so that the main body of the structure can have better ductility. The eccentric bracing frame can provide a certain lateral stiffness for the structure under earthquake action, and can also dissipate the energy in the structure, effectively control the deformation of the structure, reduce the lateral movement between floors and the overall structure, and ensure the safety of the main structure; The lead-core rubber damper can also take advantage of the binding force of the composite elastic member and the lower yield stress of the lead core, and has certain recoverability when the force of the lead-core rubber damper is terminated, and at the same time Moderate damping improves its energy dissipation effect and can well protect the safety of the main structure; the lead core can increase the early stiffness of the lead core rubber damper, which is beneficial to control the wind vibration response and resist the micro vibration of the foundation, long-term wind load Lower fatigue resistance is better.

Further, the shape of the eccentric support frame structure can be a K-shaped structure or a D-shaped structure. The positions of the lead-core rubber dampers used as energy-dissipating beam sections are different under different structural shapes, but they can all be eccentric The supporting frame structure provides a good energy dissipation effect; the composite elastic member includes a plurality of connecting steel plates, a plurality of rubber layers and two rubber plates, each of the connecting plates and each of the rubber layers are laminated alternately in sequence, and the The composite elastic member is fixedly connected to the connection plate through the rubber layer located on the outside, and the two rubber plates are respectively arranged at both ends of the composite elastic member, and the connection plate and the rubber layer are connected to the rubber plate to form Rectangular composite elastic structure, simple connection; the lead core includes a lead core body and a lead core cover, the two lead core covers are respectively arranged at both ends of the lead core body, and the lead core body passes through The connecting steel plate and the rubber layer, the lead core body is fixedly connected with the connecting plate through the lead core cover, so as to ensure the reliability of the connection of the lead core body inside the elastic rubber part; the lead core body The structure and connection relationship of the rubber damper are very simple, the production and processing are more convenient, and the use is convenient. Compression deformation energy consumption, so that the use effect of the lead rubber damper is better; the length of the connecting plate is greater than the length of the composite elastic member, and the center line of the connecting plate perpendicular to its plate surface is in line with the The axes of the lead cores coincide, that is, the entire lead rubber damper is a symmetrical structure, and the connecting plates on both sides can fix the composite elastic parts to ensure the stability of the lead rubber damper structure; the first beam of the first beam One end and the first end of the second beam body are provided with embedded panels, and the connecting plate is connected between the first beam body and the second beam body through a fixed connection with the embedded panels, Both ends of the connection plate are provided with first connection holes, and the embedded plate is provided with a second connection hole corresponding to the first connection hole, and the first connection hole is connected with the second connection hole. High-strength bolts are worn, and the process of installing lead rubber dampers between the first beam body and the second beam body of the frame beam in actual engineering is simpler, avoiding the impact on the building’s function, and the lead rubber damper after the earthquake. The repair and smoothing of the core rubber damper are more convenient, which greatly guarantees the reliability and service life of the shear wall coupling beam structure.

Description of drawings

FIG. 1 is a schematic diagram of the overall structure of the lead rubber damper described in Embodiment 1;

Fig. 2 is a structural schematic diagram of the eccentric support frame structure described in the first embodiment;

Fig. 3 is a schematic diagram of an enlarged structure at A in Fig. 2;

Fig. 4 is a structural schematic diagram of the eccentrically supported frame structure described in the second embodiment.

Explanation of reference signs:

1. Frame beam, 11. First beam body, 12. Second beam body, 13. Lead rubber damper, 131. Connecting plate, 1311. First connecting hole, 132. Composite elastic member, 1321. Connecting steel plate, 1322, rubber layer, 1323, rubber plate, 133, lead core, 1331, lead core body, 1332, lead core cover, 2, support column, 3, support member, 4, embedded plate, 41, second connection Holes, 5, high-strength bolts.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right" etc. is based on the orientation or positional relationship shown in the drawings, and is only In order to facilitate the description of the present invention and simplify the description, it does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

Embodiment one

Referring to Figures 1 to 3, the eccentrically supported frame structure described in this preferred embodiment includes a frame beam 1, two support columns 2 and at most two support columns connected between the bottom of the frame beam 1 and the support columns 2 Support 3, the frame beam 1 includes a first beam body 11, a second beam body 12 and a lead rubber damper 13, and the two support columns 2 are vertically connected to the first beam body 11 and the The second beam body 12, the first beam body 11 and the second beam body 12 are arranged opposite to each other with their axes coincident, the lead rubber damper 13 is connected to the first beam body 11 and the second beam body 11 Between the beams 12, the lead rubber damper 13 includes two connecting plates 131 arranged in parallel and a composite elastic member 132 arranged between the two connecting plates 131, and the composite elastic member 132 penetrates There is a lead core 133, and the two ends of the lead core 133 are respectively connected to the connecting plate 131, and the two connecting plates 131 are respectively connected to the first end of the first beam body 11 and the second beam body The first end of 12 is fixedly connected.

Based on the above structure, the lead rubber damper 13 is installed between the first beam body 11 and the second beam body 12 of the frame beam 1 as an energy-dissipating beam section of the eccentrically supported frame structure. The composite elasticity of the lead rubber damper 13 The part 132 has a certain binding force, and the lead core 133 arranged in the composite elastic part 132 has a relatively low yield stress. Using the above two characteristics, the lead core rubber damper 13 has a certain degree of recoverability when it is stressed, and it is also It has moderate damping, effectively improves its own energy dissipation effect, and thus can well protect the safety of the main structure; the lead core 133 is arranged between two parallel connecting plates 131 of the lead core rubber damper 13, and the lead core The two ends of 133 are respectively connected to the connecting plate 131, and the two fast connecting plates 131 are respectively fixedly connected with the first end of the first beam body 11 and the first end of the second beam body 12, and then the lead core 133 is horizontal. Between the first beam body 11 and the second beam body 12, the lead core 133 can increase the stiffness of the muscle damper, which is beneficial to control the wind vibration response and resist the micro-vibration of the foundation, and has high fatigue resistance under long-term wind load; eccentric support The frame utilizes the energy dissipation of the shearing and extrusion deformation of the lead cores 133 at both ends of the energy dissipation and the energy dissipation of the shearing hysteretic deformation of the composite elastic member 133, so that the main body of the structure has better ductility. It can provide a certain lateral stiffness for the structure, and can dissipate the energy in the structure, effectively control the deformation of the structure, reduce the lateral movement between layers and the overall structure, and ensure the safety of the main structure.

Among them, the preferred eccentric support frame structure in this embodiment is a K-shaped eccentric support frame, the number of support members 3 is preferably two, and the upper parts of the two support members 3 are respectively obliquely supported at the bottom of the frame beam 1 near the middle position, The length of the first beam body 11 of the frame beam 1 is equal to the length of the second beam body 12 of the frame beam 1, the lead rubber damper 13 is connected between the first beam body 11 and the second beam body 12, and the lead rubber damper The two parallel connecting plates 131 of the device 13 are respectively connected to the first end of the first beam body 11 and the first end of the second beam body 12, and the two support members 3 are respectively arranged obliquely on the frame beam. 1 and the support column 2, the upper ends of the two supports 3 are fixedly connected to the bottom of the first end of the first beam 11 and the bottom of the first end of the second beam 12, and the two supports 3 The lower ends are respectively connected to the support columns 2 on both sides. The composite elastic member 132 includes a plurality of connecting steel plates 1321, a plurality of rubber layers 1322 and two rubber plates 1323. Each connecting steel plate 1321 and each rubber layer 1322 are stacked alternately in sequence, and the outermost layers on both sides are all rubber. Layer 1322, the composite elastic member 132 is connected with the connecting plate 131 through the outermost rubber layer 1322, two rubber plates 1323 are respectively arranged at the two ends of the composite elastic member 132, and the connecting steel plate 1321 and the rubber layer 1322 are connected with the rubber plate 1323 are vertically connected, the connecting plate 131, the rubber layer 1322, the connecting steel plate 1321 and the lead core 133 are processed into one structure through high-temperature vulcanization, that is, the lead core rubber damper 13 is integrally formed, and the connection method is very simple , easy to produce and process, and easy to use; the lead core 133 passes through the connecting steel plate 1321 and the rubber layer 1322 in turn, the axis of the lead core 133 passes through the center of the composite elastic member 132, and is arranged in the middle of the composite elastic member 132, so that the energy dissipation effect is better The lead core 133 includes a lead core body 1331 and two lead core caps 1332, the two lead core caps 1332 are located at both ends of the lead core body 1331, the lead core body 1331 passes through the connecting steel plate 1321 and the rubber layer 1322 in turn, And the lead core body 1331 is fixedly connected with the connecting plate 131 through the lead core cover 1332. The lead core cover 1332 can ensure the stable connection of the lead core 133 inside the composite elastic member 132, effectively preventing the lead core 133 from being trapped in the composite elastic member during an earthquake. 132 shakes inside; what needs to be explained here is that the shape of the composite elastic member 132 can be cylindrical, or other structures such as square column or rectangular column, that is, the cross-sectional area of the composite elastic member 132 can be circular, square Or other shapes such as rectangles; the frame beam 1 is made of H-shaped steel, but in other embodiments, the constituent materials of the frame beam 1 are not limited by this embodiment, and appropriate materials can be selected according to actual needs.

In addition, the first end of the first beam body 11 and the first end of the second beam body 12 are equipped with embedded panels 4, and the connecting plate 131 is fixedly connected with the embedded panels 4 to ensure that it is in the first The stability of the connection between the beam body 11 and the second beam body 12, the two ends of the connecting plate 131 are respectively provided with a first connection hole 1311, and the embedded plate 4 is provided with a second connection hole 1311 corresponding to the first connection hole 1311. The connection hole 41, the first connection hole 1311 and the second connection hole 41 are pierced with high-strength bolts 5, and the connection plate 131 is connected with the embedded plate 4 through the high-strength bolts 5. It is convenient to install and disassemble. , the lead rubber damper 13 can be repaired and replaced at any time, and the use function of the building structure will not be affected; each embedded panel 4 is connected with the inner end surface of the first end of the first beam body 11 and the second The inner end surface of the first end portion of the beam body 12 is attached to each other. When the lead rubber damper 13 is installed, the two connecting plates 131 of the lead rubber damper 13 are connected to the first end of the first beam body 11 respectively. The outer end surface of the first end of the second beam body 12 is in contact with the outer end surface of the first end of the second beam body 12 to facilitate the connection between the connecting plate 131 and the embedded plate 4, and the lead rubber damper 13 is connected to the embedded plate through the connecting plate 131 The connection between the parts 4 is stably arranged between the first beam body 11 and the second beam body 12, and when an earthquake occurs, it will not be in other directions between the first beam body 11 and the second beam body 12 Shaking occurs, avoiding the loosening of the lead rubber damper 13 between the first beam body 11 and the second beam body 12, ensuring that the lead rubber damper 13 can play a good effect of energy dissipation and shock absorption. The embedded panel 4 is preset in the first end of the first beam body 11 and the second beam body 12, which can ensure the stability of the distribution of the entire embedded panel 4; the length of the connecting plate 131 is greater than the length of the composite elastic member 132 , the centerline of the connecting plate 131 perpendicular to its plate surface coincides with the axis of the lead core 133, the entire lead core rubber damper 13 is a symmetrical structure, which can play a better shock absorption effect, and the connecting plate 131 grows composite elasticity Both ends of the member 132 are provided with first connecting holes 1311 , which facilitates the connection of the lead rubber damper 13 between the first beam body 11 and the second beam body 12 . The lead rubber damper 13 adopts an I-shaped structure, which is more stable when connected between the first beam body 11 and the second beam body 12, and the effect of transmitting energy dissipation and shock absorption is more reliable.

Embodiment two

Referring to Fig. 1 and Fig. 4, the difference between this embodiment and Embodiment 1 is that the preferred eccentric support frame structure of this embodiment is a D-shaped eccentric support frame structure, the number of support members 3 is preferably one, and the first beam body The length of 11 is greater than the length of the second beam body 12, that is, the first end of the first beam body 11 is close to the support column 2 vertically connected with the second beam body 12, and the upper end of the support member 3 is connected to the first beam body 11, the bottom of the first end of the support member 3 is connected to the support column 2 vertically connected to the first beam body 11, and the lead rubber damper 13 is close to the support column vertically connected to the second beam body 12 2 position settings. In addition to the above differences, the structure of the lead rubber damper 13 in this embodiment and the connection mode between the lead rubber damper 13 and the first beam body 11 and the second beam body 12 are consistent with those in the first embodiment , the corresponding effects and principles are also consistent, and will not be repeated here.

The eccentrically supported frame structure of the utility model includes a frame beam, two support columns and at most two supports connected between the bottom of the frame beam and the support columns, and the frame beam includes a first beam body, The second beam body and the lead rubber damper, the two support columns are respectively vertically connected to the first beam body and the second beam body, and the first beam body and the second beam body are arranged opposite to each other and the axes are coincident, the lead rubber damper is connected between the first beam body and the second beam body, and the lead rubber damper includes two connecting plates arranged in parallel and arranged on the two A composite elastic member between the connecting plates, the composite elastic member is provided with a lead core, and the two ends of the lead core are respectively connected to the connecting plates, and the two connecting plates are respectively connected to the first beam body The first end of the second beam is fixedly connected to the first end of the second beam, and the lead rubber damper is used as an energy dissipation beam section of the eccentrically supported frame structure, which can comprehensively utilize various energy dissipation mechanisms to improve the eccentricity The energy dissipation effect of the supporting frame, the lead core rubber damper utilizes the shearing and extrusion deformation energy dissipation of the lead core and the shearing hysteretic deformation energy dissipation of the rubber layer at the same time, so that the main body of the structure can have better ductility. The eccentric bracing frame can provide a certain lateral stiffness for the structure under earthquake action, and can also dissipate the energy in the structure, effectively control the deformation of the structure, reduce the lateral movement between floors and the overall structure, and ensure the safety of the main structure; The lead-core rubber damper can also take advantage of the binding force of the composite elastic member and the lower yield stress of the lead core, and has certain recoverability when the force of the lead-core rubber damper is terminated, and at the same time Moderate damping improves its energy dissipation effect and can well protect the safety of the main structure; the lead core can increase the early stiffness of the lead core rubber damper, which is beneficial to control the wind vibration response and resist the micro vibration of the foundation, long-term wind load Lower fatigue resistance is better.

It should be understood that the terms "first" and "second" are used in the present invention to describe various information, but these information should not be limited to these terms, and these terms are only used to distinguish information of the same type from each other. For example, "first" information may also be referred to as "second" information without departing from the scope of the present invention, and similarly, "second" information may also be referred to as "first" information.

The above is a preferred embodiment of the present utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present utility model, some improvements and deformations can also be made, these improvements and deformations It is also regarded as the protection scope of the present utility model.

Claims (10)

1. An eccentrically supported frame structure, characterized in that it comprises a frame beam, two support columns and at most two supports connected between the bottom of the frame beam and the support columns, and the frame beam includes the first A beam body, a second beam body and a lead rubber damper, the two supporting columns are respectively vertically connected to the first beam body and the second beam body, the first beam body and the second beam body The beams are arranged opposite to each other with their axes coincident. The lead rubber damper is connected between the first beam and the second beam. The lead rubber damper includes two connecting plates arranged in parallel and arranged on The composite elastic member between the two connecting plates, the composite elastic member is pierced with a lead core, and the two ends of the lead core are respectively connected to the connecting plate, and the two connecting plates are connected to the connecting plate respectively. The first end of the first beam is fixedly connected to the first end of the second beam. 2. The eccentrically supported frame structure according to claim 1, wherein the length of the first beam is equal to the length of the second beam, there are two supports, and the two supports One ends of the two supporting members are respectively connected to the two supporting columns, and the other ends of the two supporting members are respectively connected to the first end of the first beam body and the first end of the second beam body. 3. The eccentrically supported frame structure according to claim 1, wherein the length of the first beam body is greater than the length of the second beam body, the support member is one, and one end of the support member It is connected to the first end of the first beam body, and the other end of the support member is connected to the support column vertically connected to the first beam body. 4. The eccentrically supported frame structure according to any one of claims 1 to 3, wherein the composite elastic member comprises a plurality of connecting steel plates and a plurality of rubber layers, each of the connecting steel plates and each of the rubber layers The composite elastic parts are stacked alternately in sequence, and the composite elastic parts are fixedly connected with the connecting plate through the rubber layer on the outside. 5. The eccentrically supported frame structure according to claim 4, wherein the composite elastic member comprises two rubber plates, and the two rubber plates are respectively arranged at two ends of the composite elastic member, and the connecting The steel plate and the rubber layer are vertically connected to the rubber plate respectively. 6. The eccentrically supported frame structure according to claim 5, wherein the lead core comprises a lead core body and lead core caps respectively arranged at both ends of the lead core body, and the lead core body passes through the lead core body in turn. The connecting steel plate and the rubber layer, the lead core is fixedly connected to the connecting plate through the lead core cover. 7. The eccentrically supported frame structure according to claim 6, wherein the axis of the lead core passes through the center of the composite elastic member. 8. The eccentric support frame structure according to claim 4, characterized in that, the length of the connecting plate is greater than the length of the composite elastic member, and the center line of the connecting plate perpendicular to its board surface is in line with the The axes of the lead cores coincide. 9. The eccentrically supported frame structure according to claim 8, characterized in that the first end of the first beam body and the first end of the second beam body are provided with embedded panels, so The connecting plate is fixedly connected with the embedded plate. 10. The eccentrically supported frame structure according to claim 9, characterized in that first connecting holes are respectively provided at both ends of the connecting plate, and the embedded plate is provided with holes corresponding to the first connecting holes. Corresponding to the second connecting hole, the first connecting hole and the second connecting hole are pierced with high-strength bolts.