An easy-to-assemble three-dimensional suspension isolation device

Abstract

The present invention discloses an easy-to-assemble three-dimensional suspension isolation device, which is used for three-dimensional seismic reduction and isolation of underground structures in foundation pits, and is characterized in that the three-dimensional suspension isolation device includes a vertical shock-absorbing frame and a suspension basket system, wherein: the vertical shock-absorbing frame includes an upper frame panel, a lower frame panel, and a shock-absorbing component and a guide device arranged between the upper frame panel and the lower frame panel; the suspension basket system is arranged below the vertical shock-absorbing frame, and includes a basket frame and a horizontal shock-absorbing component. The three-dimensional suspension isolation device of the present invention solves the problem of coordinated control of vertical vibration and horizontal vibration of existing civil engineering structures under earthquake action, and can also realize rapid replacement of the isolation device after an earthquake disaster.

Description

Technical Field

[0001] The invention relates to the technical field of vibration reduction and isolation of civil engineering, in particular to an easy-to-assemble three-dimensional suspension vibration isolation device. Background Art

[0002] Earthquake disasters have brought immeasurable losses of life and property to human society. In order to comprehensively prevent the impact of earthquakes on civil engineering structures, a common engineering technology is seismic isolation technology. In long-term practical activities, seismic isolation systems have been found to effectively reduce the impact of earthquakes.

[0003] Currently, the most common seismic isolation bearings are rubber seismic isolation bearings; however, according to the existing production technology and the material characteristics of rubber itself, rubber seismic isolation bearings have inherent defects, so it is necessary to improve them. Summary of the invention

[0004] The present invention aims to provide an easy-to-assemble three-dimensional suspension isolation device for solving the problem of coordinated control of vertical vibration and horizontal vibration of existing civil engineering structures under earthquake action, while realizing rapid replacement of the isolation device after an earthquake disaster.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] An easy-to-assemble three-dimensional suspension isolation device is used for three-dimensional seismic reduction and isolation of underground structures in foundation pits. The three-dimensional suspension isolation device includes a vertical shock-absorbing frame and a suspension cable basket system, wherein:

[0007] The vertical shock absorbing frame comprises an upper frame panel, a lower frame panel, and a shock absorbing component and a guide device arranged between the upper frame panel and the lower frame panel;

[0008] The shock absorbing component includes a plurality of helical tension springs and a vertical damping device, and is arranged between the upper frame panel and the lower frame panel;

[0009] The guide device includes a plurality of linear bearing guide rods and pulleys, wherein the bottom end of the linear bearing guide rod is fixed on the lower frame panel, and the upper end thereof is inserted into a plurality of linear bearings provided in the upper frame panel; the pulley is provided at the outer edge of the lower frame panel and is close to the inner wall of the foundation pit;

[0010] The cable suspension basket system is arranged below the vertical shock absorbing frame, and comprises a suspension basket frame and a horizontal shock absorbing component;

[0011] The hanging basket frame comprises an upper hanging basket panel and a lower hanging basket panel, a hanging basket web is arranged between the upper hanging basket panel and the lower hanging basket panel, and the upper hanging basket panel and the lower hanging basket panel are connected to each other through the hanging basket web;

[0012] The horizontal shock-absorbing component includes a plurality of slings and horizontal dampers, and the two ends of each sling are respectively connected to the lower frame panel and the upper hanging basket panel, so that the suspended hanging basket system is suspended below the vertical shock-absorbing frame; the horizontal damper is fixed to the outer side of the hanging basket web, and the outer end is fixedly connected to the inner wall of the foundation pit.

[0013] According to a preferred embodiment of the present invention, the number of the helical tension springs is 6, which are symmetrically distributed between the upper frame panel and the lower frame formwork; the number of the vertical damping devices is 4, which are symmetrically distributed between the upper frame panel and the lower frame formwork; the number of the linear bearing guide rods is 4, which are symmetrically distributed between the upper frame panel and the lower frame formwork; the number of the pulleys is 4, which are evenly distributed on the outer edge of the lower frame panel.

[0014] According to a preferred embodiment of the present invention, the number of the slings is 6, which are evenly distributed along the outer edge of the upper hanging basket panel; the number of the horizontal dampers is 6, which are divided into three pairs and are evenly distributed on the outer side of the hanging basket web through three bolts respectively.

[0015] Furthermore, the two paired horizontal dampers are respectively fixed on both sides of the bolt and are located on the same horizontal plane.

[0016] According to the present invention, an upper support is provided above the upper frame panel for connecting the vertical shock absorbing frame to the inner wall of the foundation pit. Preferably, the number of the upper supports is 8 and they are evenly distributed on the outer edge of the upper frame panel.

[0017] According to the present invention, an embedded part is provided above the upper hanging basket panel for fixed connection with the target object to be seismically isolated. Preferably, the number of the embedded parts is 4, which are evenly distributed on the upper hanging basket panel.

[0018] According to a preferred embodiment of the present invention, the upper frame panel, the lower frame panel, the upper hanging basket panel and the lower hanging basket panel are integrally in a circular or polygonal configuration with a hollow center, and are arranged around the target object to be seismically isolated.

[0019] According to an alternative solution, the upper frame panel, the lower frame panel, the upper hanging basket panel and the lower hanging basket panel are all formed by splicing a plurality of panels, and two adjacent panels are connected and fixed by a connecting plate.

[0020] The three-dimensional suspension isolation device of the present invention has the following beneficial effects:

[0021] 1. The invention adopts spiral tension spring elements to achieve vertical seismic isolation and adopts a suspension basket system to achieve horizontal seismic isolation; the system as a whole is a passive control device, has no external energy input, and has natural stability characteristics.

[0022] 2. Spring elements and cable elements are used to achieve seismic isolation, which has the characteristics of simple structure and convenient processing; the spring elements and cable elements are connected to the frame panel of the shock-absorbing device through connecting pins, and are easy to install and disassemble; according to the specific requirements of vertical seismic isolation and horizontal seismic isolation, the various components of the seismic isolation system can be uniformly designed and mass-produced; the main seismic isolation elements of the seismic isolation system are only connected by pins, which reduces the difficulty of installation and maintenance of the seismic isolation device; it is also convenient to replace springs and cables on site according to the dynamic characteristics of the actual engineering structure, thereby improving the applicability, reliability and durability of the device.

[0023] 3. The present invention can realize three-dimensional seismic isolation of civil engineering structures. Vertical seismic isolation is realized by adjusting the vertical total stiffness determined by the springs; wherein the number of springs and their stiffness are determined by the structural dynamic characteristics and the preset target control performance. Horizontal seismic isolation is realized by changing the length of the slings, and the horizontal seismic isolation period can be adjusted very conveniently. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the easy-to-assemble three-dimensional suspension seismic isolation device of the present invention.

[0025] Figure 2 yes Figure 1 Schematic diagram of the cross section along AA.

[0026] Figure 3 yes Figure 1 Schematic diagram of the cross section along BB.

[0027] Figure 4 yes Figure 1 Schematic diagram of the cross section along CC.

[0028] Figure 5 yes Figure 1 Schematic diagram of the cross section along DD.

[0029] Description of the figure number:

[0030] 1. Object to be isolated; 2. Upper frame panel; 3. Lower frame panel; 4. Upper support;

[0031] 5. Helical tension spring; 6. Vertical damping device; 7. Pin; 8. Linear bearing;

[0032] 9. Linear bearing guide rod; 10. Pulley; 11. Embedded parts; 12. Sling; 13. Horizontal damper;

[0033] 14. Upper hanging basket panel; 15. Lower hanging basket panel; 16. Hanging basket belly plate; 17. Connectors;

[0034] 18. Bolts; 20. Connecting plate. DETAILED DESCRIPTION

[0035] The following is a further detailed description of the easy-to-assemble three-dimensional suspension seismic isolation device of the present invention with reference to the accompanying drawings. It should be understood that the following embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0036] The three-dimensional suspension isolation device of the present invention is used in the field of civil engineering, and is mainly used to realize three-dimensional seismic reduction and isolation of civil engineering structures. In a general sense, the target object to be three-dimensionally isolated can be a ground building or an underground structure; at the same time, the target object to be isolated can also be a precision instrument, equipment that requires shockproofing, a work platform, a control room, a safe house, etc. Whether it is a civil engineering structure or a vibration-sensitive precision instrument or equipment, failure to implement appropriate seismic reduction and isolation measures may cause loss of life and property to the operating personnel and operating equipment.

[0037] like Figure 1 , which is a schematic diagram of the structure of the easy-to-assemble three-dimensional suspension seismic isolation device of this embodiment, is used for underground structures, such as cylindrical or similarly configured target objects 1 to be seismically isolated in foundation pits. As shown in the figure, the easy-to-assemble three-dimensional suspension seismic isolation device includes a vertical shock absorbing frame and a suspension basket system, wherein:

[0038] The vertical shock-absorbing frame includes an upper frame panel 2, a lower frame panel 3, and a shock-absorbing component and a guide device arranged between the upper frame panel 2 and the lower frame panel 3.

[0039] An upper support 4 is provided above the upper frame panel 2 for connecting the vertical shock absorbing frame to the inner wall of the foundation pit (not shown in the figure).

[0040] The shock absorbing component includes a plurality of helical tension springs 5 ​​and a vertical damping device 6, which are arranged between the upper frame panel 2 and the lower frame panel 3 through a plurality of pins 7 respectively passing through the upper frame panel 2 and the lower frame panel 3. This connection method can realize on-site installation and disassembly.

[0041] The guiding device includes a plurality of linear bearing guide rods 9 and a pulley 10. The bottom end of the linear bearing guide rod 9 is fixed on the lower frame panel 3, and the upper end is inserted into a plurality of linear bearings 8 penetrated in the upper frame panel 2. The pulley 10 is arranged on the outer edge of the lower frame panel 3 and is close to the inner wall of the foundation pit.

[0042] Combination Figure 2 and Figure 3As shown, the number of the upper supports 4 is 8, which are evenly distributed on the outer edge of the upper frame panel 2; the number of the helical tension springs 5 ​​is 6, which are symmetrically distributed between the upper frame panel 2 and the lower frame formwork 3; the number of the vertical damping devices 6 is 4, which are symmetrically distributed between the upper frame panel 2 and the lower frame formwork 3; the number of the linear bearing guide rods 9 is 4, which are symmetrically distributed between the upper frame panel 2 and the lower frame formwork 3; the number of the pulleys 10 is 4, which are evenly distributed on the outer edge of the lower frame panel 3.

[0043] like Figure 1 As shown, when the helical tension spring 5 is in a free state, the upper frame panel 2 and the lower frame panel 3 are both in a horizontal state; and the shock absorbing component and the guide device are both in a vertical state.

[0044] The suspended basket system is arranged below the vertical shock absorbing frame, and comprises a basket frame and a horizontal shock absorbing component.

[0045] The hanging basket system includes an upper hanging basket panel 14 and a lower hanging basket panel 15, combined with Figure 4 and Figure 5 As shown, a basket web 16 is provided between the upper basket panel 14 and the lower basket panel 15, and the basket webs 16 are connected to each other. Preferably, the basket webs 16 are provided close to the outer edges of the upper basket panel 14 and the lower basket panel 15.

[0046] The horizontal shock-absorbing component includes a plurality of suspension cables 12 and horizontal dampers 13, and the two ends of each suspension cable 12 are respectively connected to the lower frame panel 3 and the upper hanging basket panel 14 through the pin shaft 7 passing through the lower frame panel 3 and the upper hanging basket panel 14, so that the suspension basket system is suspended below the vertical shock-absorbing frame; the horizontal damper 13 is fixed to the outer side of the hanging basket web 16 by means of bolts 18, and the outer end is fixedly connected to the inner wall of the foundation pit; preferably, the horizontal dampers 13 are arranged in pairs, and the two paired horizontal dampers 13 are respectively fixed to the two sides of the bolt 18 and are located on the same horizontal plane.

[0047] In addition, an embedded part 11 is provided above the upper hanging basket panel 14 for fixedly connecting with the target object 1 to be seismically isolated via a connecting part 17 .

[0048] Combination Figure 4 and Figure 5 As shown, the number of the slings 12 is 6, which are evenly distributed along the outer edge of the upper hanging basket panel 14; the number of the horizontal dampers 13 is 6, which are divided into three pairs and are evenly distributed on the outer side of the hanging basket web 16 through three bolts 18 respectively; the number of the embedded parts 11 is 4, which are evenly distributed on the upper hanging basket panel 14.

[0049] In this embodiment, the overall configuration of the upper frame panel 2 and the lower frame panel 3 is a circular or polygonal configuration with a hollow center, preferably a ring-shaped configuration, so as to be arranged around the target object 1 to be isolated; better, as Figure 2 and Figure 3 As shown, the upper frame panel 2 and the lower frame panel 3 are both formed by splicing a plurality of panels, and two adjacent panels are connected and fixed by a connecting plate 20, for example, by welding or bolting; this structure can be easily installed and replaced. Similarly, the overall configuration of the upper hanging basket panel 14 and the lower hanging basket panel 15 is also a circular or polygonal configuration with a hollow center, preferably a ring. Figure 4 and Figure 5 The upper hanging basket panel 14 and the lower hanging basket panel 15 shown are in an integral ring shape, and it is easy to understand that it is also feasible to adopt a form of splicing multiple panels like the upper frame panel 2 and the lower frame panel 3.

[0050] In this embodiment, preferably, the embedded parts 11 are evenly arranged along the annular inner edge of the upper hanging basket panel 14 .

[0051] like Figure 1 As shown, the guide device (linear bearing guide rod 9 and pulley 10) of this embodiment ensures that during the vertical vibration process, the central axes of the upper frame panel 2 and the lower frame panel 3 are always colinear, thereby avoiding the rigid collision between the vertical seismic isolation frame and the inner wall of the foundation pit under the action of the suspension basket system.

[0052] Figure 1 In the given embodiment, when the helical tension spring 5 is in a free state, the upper frame panel 2 and the lower frame panel 3 are both in a horizontal state; the shock absorbing components and the guide device are both in a vertical state. When subjected to vertical earthquakes, in order to ensure the integrity of the vertical shock absorbing system movement and improve the vertical seismic isolation effect, the following requirements need to be met: 1. The arrangement position of the helical tension spring 5 is evenly arranged along the cross section of the lower frame, and the overall distribution is polygonal; 2. According to the dynamic characteristics and seismic isolation requirements of the target seismic isolation structure 1, the overall stiffness of the helical tension spring 5 is designed, and the geometric characteristics of each spring are determined according to the total number of springs arranged.

[0053] In the cable hanging basket system, the horizontal isolation parameters are determined according to the horizontal isolation design requirements; according to the determined horizontal isolation parameters, the appropriate length of the sling 12 is selected. In order to increase the energy dissipation capacity of the horizontal isolation system, at least 6 dampers 13 evenly distributed along the frame cross section are arranged in the cable hanging basket system. The connection between the sling 12 and the horizontal damper 13 and the isolation system is achieved by connecting the pin 7. This connection method is easy to disassemble, which can increase the adjustability of the isolation device and ensure the rapid replacement of the isolation device after an earthquake. This easy-to-assemble and easy-to-disassemble device installation method can timely prevent the influence of factors such as falling dust, accumulated rain, and rust on the isolation device during service, and avoid the damage to the durability and reliability of the isolation device due to environmental factors.

[0054] Although the three-dimensional suspended seismic isolation device of the present invention is described in detail above using a cylindrical underground structure as an example, those skilled in the art should understand that the technical solution of the present invention is not limited to the above-mentioned specific application objects, and similar changes based on the basic principles and concepts of the present invention should also fall within the scope of the present invention.

Claims

1. An easy-to-assemble three-dimensional suspension isolation device, used for three-dimensional seismic reduction and isolation of underground structures in foundation pits, characterized in that: The three-dimensional suspension seismic isolation device comprises a vertical shock absorbing frame and a suspension cable basket system, wherein: The vertical shock absorbing frame comprises an upper frame panel, a lower frame panel, and a shock absorbing component and a guide device arranged between the upper frame panel and the lower frame panel; The shock absorbing component includes a plurality of helical tension springs and a vertical damping device, and is arranged between the upper frame panel and the lower frame panel; The guide device includes a plurality of linear bearing guide rods and pulleys, wherein the bottom end of the linear bearing guide rod is fixed on the lower frame panel, and the upper end thereof is inserted into a plurality of linear bearings provided in the upper frame panel; the pulley is provided at the outer edge of the lower frame panel and is close to the inner wall of the foundation pit; The cable suspension basket system is arranged below the vertical shock absorbing frame, and comprises a suspension basket frame and a horizontal shock absorbing component; The hanging basket frame comprises an upper hanging basket panel and a lower hanging basket panel, a hanging basket web is arranged between the upper hanging basket panel and the lower hanging basket panel, and the upper hanging basket panel and the lower hanging basket panel are connected to each other through the hanging basket web; The horizontal shock absorbing component includes a plurality of suspension cables and a horizontal damper, and the two ends of each suspension cable are respectively connected to the lower frame panel and the upper hanging basket panel, so that the suspension basket system is suspended below the vertical shock absorbing frame; the horizontal damper is fixed to the outer side of the hanging basket web, and the outer end is fixedly connected to the inner wall of the foundation pit; The number of the helical tension springs is 6, which are symmetrically distributed between the upper frame panel and the lower frame plate formwork; The number of the vertical damping devices is 4, which are symmetrically distributed between the upper frame panel and the lower frame formwork; The number of the linear bearing guide rods is 4, which are symmetrically distributed between the upper frame panel and the lower frame plate mold; The number of the pulleys is 4, which are evenly distributed on the outer edge of the lower frame panel; The number of the slings is 6, which are evenly distributed along the outer edge of the upper hanging basket panel; The number of the horizontal dampers is 6, which are divided into three pairs and are evenly distributed on the outer side of the web of the hanging basket through three bolts.

2. The three-dimensional suspension seismic isolation device according to claim 1, characterized in that: The two paired horizontal dampers are respectively fixed on both sides of the bolt and are located on the same horizontal plane.

3. The three-dimensional suspension seismic isolation device according to claim 1, characterized in that: An upper support is provided above the upper frame panel for connecting the vertical shock absorbing frame to the inner wall of the foundation pit.

4. The three-dimensional suspension seismic isolation device according to claim 3 is characterized in that: The number of the upper supports is 8, which are evenly distributed on the outer edge of the upper frame panel.

5. The three-dimensional suspension seismic isolation device according to claim 1, characterized in that: An embedded part is provided above the upper hanging basket panel for fixedly connecting with the target object to be seismically isolated.

6. The three-dimensional suspension seismic isolation device according to claim 5, characterized in that: The number of the embedded parts is 4, which are evenly distributed on the upper hanging basket panel.

7. The three-dimensional suspension seismic isolation device according to claim 1, characterized in that: The upper frame panel, the lower frame panel, the upper hanging basket panel and the lower hanging basket panel are in a circular or polygonal configuration with a hollow center, and are arranged around the target object to be seismically isolated.

8. The three-dimensional suspension seismic isolation device according to claim 7, characterized in that: The upper frame panel, the lower frame panel, the upper hanging basket panel and the lower hanging basket panel are all formed by splicing a plurality of panels, and two adjacent panels are connected and fixed by a connecting plate.

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