A support and application structure integrating horizontal and vertical vibration isolation
By using support integrating horizontal earthquake isolation and vertical vibration isolation in subway buildings, the problem that the existing technology cannot effectively isolate vertical vibration is solved, and the three-dimensional vibration isolation function of the building is realized and the vibration is reduced. The impact of noise on the environment of residents.
Patent Information
- Application Number
- CN202010724632.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Priority Date
- 2020-06-15
- Filing Date
- 2020-07-24
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2040-07-24
AI Technical Summary
The existing subway overhead building design is relatively mature in terms of earthquake resistance, but it has shortcomings in dealing with vibration noise during subway operation, and it is impossible to effectively isolate vertical vibrations, affecting residents' living and working environment.
A support integrating horizontal shock isolation and vertical shock isolation is adopted, including a horizontal shock isolation unit and a vertical elastic shock isolation unit, to ensure the stability of the vibration isolation spring when the horizontal and vertical forces are applied by the design of the housing box. and effectiveness.
It realizes shock absorption in the horizontal direction of the building and vibration isolation in the vertical direction, effectively reducing the impact of vibration noise during subway operation on buildings and residents, and meeting the requirements of green and environmentally friendly living conditions.
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Figure CN111962699B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of building structure and mechanical vibration control, and in particular to a building seismic isolation and vibration isolation scheme for use in the fields of subway superstructures, etc. Background Art
[0002] With the continuous development of cities, urban land resources are becoming increasingly scarce. Rational development and utilization of land resources above subways is an important direction of urban development. Building houses above subways is the reuse of land resources.
[0003] At present, the design of houses above subways mainly adopts seismic isolation technology in terms of earthquake-resistant design. The application of seismic isolation technology is relatively mature and has become an important means of structural seismic design. The application of existing seismic isolation technology in house design has been tested by many actual earthquakes and has a good seismic isolation effect. However, during normal use, houses above subways will be affected by the vibration noise of the subway (or rail transit) during operation. The vibration noise will affect people's normal living and working environment through solid sound transmission. This requires the use of vibration isolation measures to reduce the vibration noise to within the normal living environment indicators of people.
[0004] The commonly used seismic isolation technology is to set a seismic isolation layer with smaller stiffness at the bottom of the building or structure, extend the natural vibration period of the structure and increase damping to avoid earthquakes with short periods. However, the existing building seismic isolation technology only isolates horizontal earthquakes and often ignores the impact of vertical earthquakes. The research results show that the existing building seismic isolation technology has a significant effect on horizontal shock absorption, but has a certain amplification effect on vertical earthquakes and vibrations. It can be seen that due to the different working principles of building seismic isolation technology, it cannot effectively isolate vibrations, so it cannot replace building vibration isolation.
[0005] The existing subway roof architectural design is mainly based on earthquake resistance, ignoring the impact of high-speed wheel-rail vibration during subway operation. This vibration impact often exceeds the needs of people's normal living and working environment, and cannot meet the requirements of green and environmentally friendly living conditions.
[0006] As the demand for subway roof development is increasing, based on the special location of subway roofs, the subway roof structure needs to solve the problem of reducing the adverse effects of the superstructure on the subway under earthquakes, and on the other hand, it needs to solve the impact of subway vibration on the superstructure. Among them, shock absorption needs to solve the problem of horizontal earthquake resistance, while subway vibration solves the problem of vertical vibration reduction. Therefore, how to make the subway roof building able to perform horizontal earthquake resistance and vertical vibration reduction at the same time is a problem that needs to be solved urgently in this field. Summary of the invention
[0007] In view of the problems existing in the seismic isolation and vibration isolation of existing subway buildings, a solution is needed to enable the subway buildings to have both horizontal and vertical vibration reduction performances.
[0008] To this end, the purpose of the present invention is to provide a bearing that integrates horizontal seismic isolation and vertical vibration isolation, which has both "horizontal shock absorption" and "vertical vibration" performance; on this basis, the present invention also provides an application structure using the bearing, which can effectively solve the problem that the existing building shock absorption scheme cannot isolate vertical vibrations.
[0009] In order to achieve the above-mentioned purpose, the present invention provides a support that integrates horizontal seismic isolation and vertical vibration isolation, including a horizontal seismic isolation unit, a vertical elastic vibration isolation unit, and a containing box. The vertical elastic vibration isolation unit is arranged in the containing box, and the horizontal seismic isolation unit is placed on the upper part of the vertical elastic vibration isolation unit in the containing box. The containing box forms a limit for the vertical elastic vibration isolation unit therein and the matching structure between the vertical elastic vibration isolation unit and the horizontal seismic isolation unit.
[0010] Furthermore, the horizontal seismic isolation unit comprises a horizontal seismic isolation support, and a first connecting assembly is arranged on the horizontal seismic isolation support.
[0011] Furthermore, the vertical elastic vibration isolation unit and the horizontal vibration isolation unit are fixedly connected in series.
[0012] Furthermore, one end of the vertical elastic vibration isolation unit is fixedly connected to the horizontal vibration isolation unit via a second connecting assembly; the other end of the vertical elastic vibration isolation unit is fixedly connected to the containing box; the second connecting assembly cooperates with the containing box to form a horizontal limiting structure.
[0013] Furthermore, the vertical elastic vibration isolation unit includes a plurality of vibration isolation springs and a deformable filling body, and the deformable filling body fills and wraps the plurality of vibration isolation springs.
[0014] Furthermore, the plurality of vibration isolation springs are evenly distributed.
[0015] Furthermore, a low friction layer is provided on the inner side wall of the containing box.
[0016] Furthermore, a reinforcement device is provided on the outer side wall of the containing box.
[0017] In order to achieve the above-mentioned purpose, the application structure of the present invention that integrates horizontal seismic isolation and vertical vibration isolation includes the above-mentioned support and a plurality of connecting components, wherein the protruding end of the horizontal seismic isolation unit in the support is connected to the first structural member through a plurality of connecting components, and the bottom of the accommodating box in the support is connected to the second structural member through a plurality of connecting components.
[0018] Furthermore, the containing box is located on the upper part of the second structural member or embedded in the second structural member.
[0019] Furthermore, the connecting component is one or more of a bolt, an anchor rod, a screw rod, and a steel bar.
[0020] The solution provided by the present invention integrates horizontal isolation and vertical vibration isolation. The seismic waves caused by earthquakes are horizontally isolated through isolation bearings (such as rubber bearings). At the same time, without affecting the horizontal isolation performance, the vibration noise caused by subway operation can be vertically isolated through vertical elastic isolation bearings (spring + deformable filler combination), effectively solving the seismic isolation and vibration isolation problems of subway buildings. This solution targets the different energy forms, frequency domain ranges, and propagation modes of seismic waves and high-speed wheel-rail vibrations. The two types of support units in the integrated solution can cooperate with each other to reasonably solve the seismic isolation and vibration isolation needs of subway buildings.
[0021] Furthermore, the solution provided by the present invention has the following advantages over the prior art in specific applications:
[0022] 1. The solution of the present invention realizes the three-dimensional vibration isolation function of the support by arranging a spring and a rubber combination for vertical vibration isolation at the bottom of the horizontal vibration isolation support. The mechanical principle is clear, the force is reasonable, the overall maturity and reliability are ingenious and easy to implement, and the cost is relatively low;
[0023] 2. The solution of the present invention places the combination of spring and rubber in the lower containing box, thereby preventing the spring from being easily destabilized and damaged when horizontal and vertical forces act on it, and solving the problem of unstable horizontal force on the vertical vibration isolation / vibration component;
[0024] 3. The solution of the present invention can ensure that the vibration isolation spring always moves up and down in the box by accommodating the box, and will not cause the support to overturn and be damaged;
[0025] 4. The solution of the present invention is easy to install and has reliable connection, which is basically consistent with the conventional rubber vibration isolation (vibration) support installation method. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.
[0027] Figure 1 It is an exploded schematic diagram of a three-dimensional vibration isolation and seismic isolation support in an example of the present invention;
[0028] Figure 2 It is a schematic diagram of the positive cross-section structure of a mounting structure of a three-dimensional vibration isolation and seismic isolation support in an example of the present invention;
[0029] Figure 3 for Figure 2A schematic cross-sectional view in the AA direction when a square box is used;
[0030] Figure 4 for Figure 2 A schematic cross-sectional view in the AA direction when a circular box is used;
[0031] Figure 5 It is the vertical mechanical model of the three-dimensional vibration isolation and seismic isolation support in the example of the present invention;
[0032] Figure 6 It is the horizontal mechanical model of the three-dimensional vibration isolation and seismic isolation support in the example of the present invention;
[0033] Figure 7 It is a schematic diagram of the cross-section structure of another installation structure of the three-dimensional vibration isolation and seismic isolation support in the example of the present invention;
[0034] Figure 8 for Figure 7 The scheme shown is a cross-sectional schematic diagram in the AA direction when a square box is embedded in a square structural member;
[0035] Fig. 9 for Figure 7 The scheme shown is a cross-sectional schematic diagram in the AA direction when a square box is embedded in a circular structural member;
[0036] Fig.10 for Figure 7 The scheme shown is a cross-sectional schematic diagram in the AA direction when a circular box is embedded in a square structural member;
[0037] Fig.11 for Figure 7 The scheme shown is a schematic cross-sectional view in the AA direction when a circular box is embedded in a circular structural member. DETAILED DESCRIPTION
[0038] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below with reference to specific diagrams.
[0039] Since seismic waves and high-speed wheel-rail vibrations have different energy forms, different frequency domains, and different propagation modes, different methods are required for seismic isolation and vibration isolation. Horizontal seismic isolation is required for seismic waves generated by earthquakes, and vertical vibration isolation is required for vibration noise generated by high-speed wheel-rails during subway operation.
[0040] In order to achieve effective horizontal isolation, the horizontal isolation scheme needs to have weak horizontal stiffness and large vertical stiffness; in order to achieve effective vertical isolation, the vertical isolation scheme needs to have weaker vertical stiffness than horizontal stiffness. It can be seen that the implementation principles of the horizontal isolation scheme and the vertical isolation scheme are different, and the two are contradictory.
[0041] Based on the above-mentioned technical contradictions, this case has effectively overcome the technical contradictions through a lot of creative work, and innovatively combined two schemes with opposite performances. That is, a vertical vibration isolation scheme is set below the horizontal vibration isolation scheme, and the two are organically combined and integrated into one by adopting the upper and lower series fixing method. This can ensure that the horizontal vibration isolation scheme can fully and effectively play the effect of vibration reduction and isolation. At the same time, the vertical vibration isolation scheme located at the bottom blocks the propagation channel of solid sound transmission, thereby effectively preventing the vibration generated by the subway wheel and rail from affecting the upper building through solid sound transmission. In this way, vibration isolation is first performed and then seismic isolation is performed, so as to achieve both horizontal and vertical vibration isolation performance.
[0042] Based on this, this example specifically provides a three-dimensional vibration isolation and seismic isolation bearing that has both horizontal seismic isolation and vertical vibration isolation functions, which can effectively solve the problem that existing seismic isolation bearings, friction pendulum bearings, etc. cannot isolate vertical vibrations / vibrations.
[0043] See also Figure 1 , which shows an exploded example diagram of the three-dimensional vibration isolation and seismic isolation support given in this example. As can be seen from the figure, the three-dimensional vibration isolation / seismic isolation support 100 (including 110, 111, 112, 120, 121, 130, 131, 140, 150) mainly integrates the horizontal seismic isolation unit 110 and the vertical elastic vibration isolation unit 120 to form a composite vibration isolation / seismic structure with horizontal seismic isolation and vertical vibration isolation functions.
[0044] Among them, the horizontal isolation unit 110 is a horizontal isolation element (ie, a horizontal isolation unit) with small horizontal stiffness and large vertical stiffness. It is mainly used to reduce the horizontal force of the structure and provide a certain additional damping ratio to achieve the horizontal isolation function.
[0045] The vertical elastic vibration isolation unit 120 has a small vertical stiffness and is integrated at one end of the horizontal vibration isolation unit 110, providing the structure with a larger vertical bearing capacity and a smaller vertical stiffness, thereby realizing a vertical vibration isolation function.
[0046] On this basis, this example further provides a containing box 130 for accommodating the vertical elastic vibration isolation unit 120 and the matching structure 112 between the vertical elastic vibration isolation unit 120 and the horizontal vibration isolation unit 110 to form a limit.
[0047] In the solution thus formed, the vertical elastic vibration isolation unit 120 is reliably connected to the horizontal vibration isolation unit 110 through the corresponding matching structure 112; at the same time, the matching structure between the two is placed as a whole into the box body 130 at a certain depth, and the matching structure is in close contact with the box body 130. The matching structure 112 is restricted from moving in the horizontal direction in the box body 130, while the matching structure can move freely in the vertical direction in the box body.
[0048] As an example, when the present embodiment is implemented, the horizontal isolation unit 110 in the present embodiment is preferably a horizontal isolation bearing mechanism, such as a rubber bearing or a lead rubber bearing.
[0049] In this example, rubber bearings or lead rubber bearings are used to form the horizontal seismic isolation unit 110, so that the stress performance of the entire horizontal seismic isolation unit 110 is stable and the deformation capacity is strong. In addition, the rubber bearings or lead rubber bearings have consistent stiffness and output in all horizontal directions and have good applicability.
[0050] Furthermore, the horizontal force of the rubber bearing or lead rubber bearing is much smaller than the horizontal shear bearing capacity of the concrete column and the box body. The horizontal seismic isolation unit 110 formed thereby can avoid the instability and damage of the bearing caused by excessive internal contact force between the steel plate 112 (i.e., the matching structure between the vertical elastic isolation unit 120 and the horizontal isolation unit 110) and the box body 130.
[0051] In a specific implementation, the rubber bearing 110 (ie, the horizontal seismic isolation unit 110 ) of such a structure is provided with a first connecting component 111 and a second connecting component 112 at both ends thereof, respectively, for installation and application of the rubber bearing 110 .
[0052] As an example, the first connecting component 111 and the second connecting component 112 here are composed of corresponding connecting steel plates. As shown in the figure, the first connecting component 111 and the second connecting component 112 can be respectively composed of the first connecting steel plate 111 and the second connecting steel plate 112. The specific shapes of the first connecting steel plate 111 and the second connecting steel plate 112 can be determined according to actual needs and are not limited here. For example, they can be square, circular, or regular polygonal, etc.
[0053] The first connecting steel plate 111 as the first connecting component 111 is fixed at one end of the first connecting steel plate 111 for connecting with the connecting component 140 to achieve fixed connection with the first structural member 200 (such as the upper pier (column) of the seismic isolation layer).
[0054] The second connecting steel plate 112 serving as the second connecting component 112 is fixedly arranged at the other end of the first connecting steel plate 111, and is used for being fixedly connected to the vertical elastic vibration isolation unit 120, so as to form a matching structure between the vertical elastic vibration isolation unit 120 and the horizontal vibration isolation unit 110; at the same time, the second connecting steel plate 112 is also placed as a limiting sliding cover plate as a whole in the containing box 130, so as to cooperate with the containing box 130, so as to form a limiting structure, so as to realize reliable transmission of horizontal force.
[0055] Preferably, the second connecting steel plate 112 on the rubber support 110 is tightly fitted to the containing box to ensure the reliability of transmitting the horizontal force.
[0056] Furthermore, the second connecting steel plate 112 on the rubber bearing 110 is connected to the vertical spring in the vertical elastic vibration isolation unit 120 as a whole. For example, the specific connection method can be bolt connection, welding, etc., which can prevent the rubber bearing from overturning and damage.
[0057] In this example, the vertical elastic vibration isolation unit 120 is preferably a vertical vibration isolation spring assembly 120 , which mainly includes two parts: a plurality of vertical vibration isolation springs 121 and a deformable filling body 122 .
[0058] Among them, a plurality of vertical vibration isolation springs 121 are preferably evenly distributed and vertically arranged as a whole in the containing box 130 , with one end thereof fixedly connected to the bottom of the containing box, and the other end thereof fixedly connected to the second connecting steel plate 112 .
[0059] The specific distribution form of the plurality of vertical vibration isolation springs 121 corresponds to the structural form of the corresponding structural member and / or the containing box. For example, they are arranged in a matrix in the containing box 130, so that the plurality of vertical vibration isolation springs 121 can evenly bear the upper load. The vertical vibration isolation springs 121 here can meet the vertical bearing capacity requirements, and the stiffness is adjustable; furthermore, the vertical vibration isolation springs 121 can adjust the corresponding vibration isolation effect by adjusting the corresponding vertical stiffness.
[0060] As an example, in the specific implementation of the vertical vibration isolation spring 121, a coil spring or a disc spring can be used, and the appropriate size can be selected according to the requirements of stiffness and vertical bearing capacity.
[0061] On this basis, in order to improve the stability of several vertical vibration isolation springs, this example combines the spring and the deformable filling body 122 to form a combined whole, so that the two can work together. At the same time, the containing box body forms a certain restraining effect on the combination of the spring and the rubber deformable filling body 122 to prevent it from becoming vertically unstable.
[0062] Specifically, the deformable filling body 122 in this example is made of a deformable material such as rubber, and this example solution uses rubber to form the corresponding filling body.
[0063] Accordingly, in this example, the corresponding filling rubber 122 is filled into the plurality of vertical vibration isolation springs 121 in the box, so that the filling rubber 122 can fill and wrap the plurality of vertical vibration isolation springs 121, and form a combined body with the plurality of vertical vibration isolation springs 121 as an integral structure. At the same time, the combined body is placed in the receiving box 130 as a whole, and fills the entire inner cavity of the receiving box 130, and cooperates with the inner cavity of the receiving box 130, (such as Figure 2As shown). The vertical vibration isolation spring assembly 120 thus formed combines a plurality of vertical vibration isolation springs and rubber together so that the two can work together. The two ends of the plurality of vertical vibration isolation springs are respectively fixedly connected to the bottom of the receiving box and the second connecting steel plate 112. At the same time, the rubber filler fills the gaps between the plurality of vertical vibration isolation springs and wraps each vertical vibration isolation spring, so that the plurality of vertical vibration isolation springs are connected to form a whole, thereby effectively improving the stability of the spring; at the same time, the receiving box 130 forms a certain constraint on the combination of the spring and the rubber to prevent it from being vertically unstable.
[0064] As an example, the deformable filling body 122 in this example can be implemented by melting rubber or other types of elastic materials and injecting them into the containing box 130 where a plurality of vertical vibration isolation springs 121 are placed. At this time, the molten elastic material will fill the containing box 130 and the gaps in the plurality of vertical vibration isolation springs 121 therein. The molten elastic material filled in this way will form an elastically deformable filling body 122 after solidification, and it will tightly wrap each vertical vibration isolation spring 121, and form a plurality of vertical vibration isolation springs 121, and based on its own elastic deformability, it will act together with the plurality of vertical vibration isolation springs 121.
[0065] The vertical elastic vibration isolation unit 120 formed by the elastically deformable filling body 122 and a plurality of vertical vibration isolation springs 121 can avoid the dominant frequency of vibration excitation, prevent resonance between the upper structure and the excitation, and thus reduce the vibration of the upper structure.
[0066] The receiving box 130 in this example is used to be placed in the vertical elastic vibration isolation unit 120, and cooperates with the second connecting steel plate 112 to place the vertical elastic vibration isolation unit 120 as a whole in the receiving box 130, wherein the two ends of the vertical vibration isolation spring in the vertical elastic vibration isolation unit 120 are respectively fixedly connected to the bottom of the receiving box 130 and the second connecting steel plate 112 located in the receiving box 130 (such as Figure 2 At the same time, the inner wall of the containing box 130 is closely attached to the second connecting steel plate 112, so that the contact extrusion force between the second connecting steel plate 112 and the containing box 130 is used to transmit the force, thereby ensuring the reliability of transmitting the horizontal force.
[0067] As an example, a steel box is preferably used in this embodiment, and a corresponding placement cavity is provided in the steel box, and its size and shape correspond to the vertical elastic vibration isolation unit 120 and the second connecting steel plate 112. As an example, the storage box can be a tetrahedron or a cylinder with an upper opening (such as Figure 3 and Figure 4At the same time, the upper edge of the steel box is higher than the second connecting steel plate 112 on the rubber support by a certain distance, so that the connecting structure between the second connecting steel plate 112 on the rubber support 110 and the vertical vibration isolation spring 121 is located in the steel box, forming a limit and movement guide for the connecting structure of the two, thereby ensuring the reliability of the connection between the two.
[0068] In addition, a certain number of connecting components 150 are also provided at the lower part of the steel box 130 for connection with other components, such as fixed connection with the second structural member 300 (such as the upper pier (column) of the seismic isolation layer).
[0069] In addition, if necessary, reinforcing devices such as stiffening ribs, hoops, etc. can be set on the periphery of the containing box 130 to improve the reliability and strength of the entire structure. The specific setting scheme of the reinforcing device here can be determined according to actual needs and is not limited here.
[0070] Furthermore, in this embodiment, in order to reduce the friction between the rubber bearing and the steel box when the bearing vibrates vertically (vibrates), a low friction layer 131 can be provided on the inner wall of the steel box. As an example, the low friction layer 131 can be made of materials such as polytetrafluoroethylene, but is not limited thereto. Thus, the low friction layer 131 can effectively reduce the influence of friction on the vibration reduction effect of the vertical vibration isolation unit.
[0071] The connection components 140, 150 used in this solution can be in the form of bolts, anchor rods, screws, steel bars, etc., which can be determined according to actual needs.
[0072] See also Figure 5 and Figure 6 , which shows the mechanical model of the three-dimensional vibration isolation / seismic support 100 given in this example, where F represents force and D represents displacement. As can be seen from the figure, the three-dimensional vibration isolation / seismic support 100 given in this example can present nonlinear mechanical properties in the plane, and the effect of horizontal force on the upper structure can be significantly reduced after the support enters the yield state. In the vertical direction, the support exhibits elastic mechanical properties, and the vertical stiffness of the structure is reduced by adjusting the stiffness, the vertical propagation of energy is blocked, and the vertical resonance of the structure is avoided.
[0073] The three-dimensional vibration isolation / seismic support 100 thus constructed has both horizontal vibration isolation and vertical vibration isolation performance. In specific applications, it can solve both the "horizontal vibration reduction" problem and the "vertical vibration" problem.
[0074] like Figure 2 and Figure 7 As shown, in a specific application, the three-dimensional vibration isolation / seismic support 100 is integrally arranged between the first structural member 200 and the second structural member 300, such as between the upper pier or column of the isolation layer and the lower pier or column of the isolation layer.
[0075] At the same time, the first connecting steel plate 111 on the rubber bearing 110 in the three-dimensional vibration isolation / seismic bearing 100 is fixedly connected to the first structural member 200 (such as a pier or column on the seismic isolation layer) through a connecting component 140 (such as an anchor rod); and the bottom of the accommodating box 130 in the three-dimensional vibration isolation / seismic bearing 100 is fixedly connected to the second structural member 300 (such as a pier or column under the seismic isolation layer) through a connecting component 150 (such as an anchor rod), thereby forming horizontal seismic isolation and vertical vibration isolation for the first structural member 200 and the second structural member 300.
[0076] Furthermore, in a specific implementation, the bottom of the accommodating box 130 accommodating the vertical vibration isolation spring is connected to the connecting member of the second structural member 300 of the seismic isolation layer through the corresponding connecting member 150, and the accommodating box 130 can be directly located on the second structural member 300 of the seismic isolation layer (such as Figure 2-Figure 4 ); as required, the housing box 130 can also be entirely embedded in the structural member at the bottom of the seismic isolation layer (such as the second structural member 300 of the seismic isolation layer), that is, the entire structure is embedded in the structural member at the bottom of the seismic isolation layer (such as Figure 7-Figure 11 ).
[0077] In a specific implementation, the housing 130 can be circular or square as described above, and the structural member matched therewith (such as the second structural member 300 of the seismic isolation layer) can also be circular or square, so as to form a Figures 8 to 11 Embedded settings scheme.
[0078] The application structure thus formed combines horizontal isolation and vertical vibration isolation, which integrates horizontal isolation and vertical vibration isolation into one. The seismic waves caused by the earthquake are horizontally isolated through horizontal isolation bearings (such as rubber bearings). At the same time, without affecting the horizontal isolation performance, the vibration noise caused by the operation of the subway can be vertically isolated through vertical elastic isolation bearings (vertical isolation spring + deformable filler combination), thereby effectively solving the building isolation and vibration isolation problems of the subway cover.
[0079] This solution takes into account the different energy forms, frequency domain ranges, and propagation modes of seismic waves and high-speed wheel-rail vibrations. The two types of support units in its integrated solution can cooperate with each other to reasonably solve the seismic and vibration isolation needs of subway buildings.
[0080] In the horizontal direction, the horizontal stiffness of the horizontal isolation unit is relatively small, and the vertical stiffness is large. When a horizontal earthquake (or vibration) occurs, the horizontal isolation unit will produce a large deformation, greatly reducing the force transmitted to the upper structure, while the force in the vertical direction cannot be reduced. In the vertical direction, the vertical stiffness of the vertical isolation unit is small, which can greatly reduce the vertical force. In this way, under the joint action of the two units, the entire support has both horizontal and vertical isolation (vibration) functions.
[0081] From the above, it can be seen that this scheme has the advantages of clear mechanical principles, reasonable force, mature and reliable technology, simple structure, easy implementation, and relatively low cost. It can be applied to three-dimensional vibration (vibration) control of buildings, equipment, tracks, etc.
[0082] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.
Claims
1. A support integrating horizontal and vertical vibration isolation, characterized in that: It includes horizontal vibration isolation unit, vertical elastic vibration isolation unit, and containing box. The horizontal isolation unit has a small horizontal stiffness and a large vertical stiffness, can reduce the horizontal force of the structure, and provide a certain additional damping ratio; the horizontal isolation unit includes a horizontal isolation support, and the two ends of the horizontal isolation support are respectively provided with a first connection component and a second connection component; The vertical elastic vibration isolation unit is arranged as a whole in the containing box, and the vertical elastic vibration isolation unit is fixedly connected in series with the horizontal vibration isolation unit; the horizontal vibration isolation unit is placed on the upper part of the vertical elastic vibration isolation unit in the containing box, and is fixedly connected with the vertical elastic vibration isolation unit through a matching structure, the matching structure is placed as a whole in the containing box to a certain depth, and is tightly fitted with the inner wall of the containing box, the matching structure is restricted from moving in the horizontal direction in the box, and can move freely in the vertical direction in the box, and transmits force through the contact extrusion force between the matching structure and the containing box; A low friction layer is arranged on the inner side wall of the containing box.
2. The support integrating horizontal and vertical vibration isolation according to claim 1 is characterized in that: One end of the vertical elastic vibration isolation unit is fixedly connected to the horizontal vibration isolation unit through a second connecting component; the other end of the vertical elastic vibration isolation unit is fixedly connected to the containing box; the second connecting component cooperates with the containing box to form a horizontal limiting structure.
3. The support integrating horizontal and vertical vibration isolation according to claim 1 is characterized in that: The vertical elastic vibration isolation unit comprises a plurality of vibration isolation springs and a deformable filling body, and the deformable filling body fills and wraps the plurality of vibration isolation springs.
4. The support integrating horizontal and vertical vibration isolation according to claim 3 is characterized in that: The plurality of vibration isolation springs are evenly distributed.
5. The support integrating horizontal and vertical vibration isolation according to claim 1 is characterized in that: The outer side wall of the containing box is provided with a reinforcing device to prevent the box from buckling and damage.
6. The application structure of integrating horizontal isolation and vertical isolation is characterized by: It comprises a support according to any one of claims 1 to 5 and a plurality of connecting components, wherein the protruding end of the horizontal seismic isolation unit in the support is connected to a first structural member via a plurality of connecting components, and the bottom of the accommodating box in the support is connected to a second structural member via a plurality of connecting components.
7. The application structure integrating horizontal and vertical vibration isolation according to claim 6 is characterized in that: The containing box is located on the upper part of the second structural member or embedded in the second structural member.
8. The application structure integrating horizontal and vertical vibration isolation according to claim 6 is characterized in that: The connecting parts are one or more of bolts, anchor rods, screw rods and steel bars.
Citation Information
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