A separable anti-sway three-dimensional seismic isolation structure

Abstract

The present invention belongs to the field of building isolation structures, and specifically discloses a separated anti-sway three-dimensional isolation structure, which includes an upper structure, a horizontal isolation device, a basement, a vertical limit slide plate, a vertical isolation device, and a foundation pit. The vertical isolation device is fixed on the foundation pit and is used to bear the basement. The vertical isolation device is a lead rubber bearing or a thick-layer rubber bearing. The horizontal isolation device is installed on the top of the basement, and the upper structure is borne above the horizontal isolation device. There is a gap between the periphery of the basement and the foundation pit, and a vertical limit slide plate connecting the foundation pit retaining wall and the basement is installed in this gap. The three-dimensional isolation structure of the present invention enables the upper structure to have a three-dimensional six-direction isolation effect through the horizontally separated horizontal isolation device and vertical isolation device, thereby ensuring the service function of the building structure and improving the structural safety.

Description

Technical Field

[0001] The present invention relates to the field of building isolation structures, and specifically to a separated anti-sway three-dimensional isolation structure. Background Technique

[0002] Earthquakes are a major natural disaster that plagues humanity. In order to reduce the loss of life and property caused by earthquakes, humans have carried out a long-term and unremitting struggle. With the progress of science and technology and engineering technology, the theory and practice of earthquake engineering have developed rapidly. As an effective control technology, isolation technology has been widely applied to various engineering structures and has become one of the most important means to reduce earthquake hazards. For example, base isolation can extend the natural vibration period of the entire structural system and reduce the seismic response of the structure by adding an isolation layer between the foundation and the superstructure. Thereby ensuring the service function of the structure and improving the structural safety.

[0003] However, since earthquakes generate shear waves, longitudinal waves and surface waves, seismic actions will be exerted on buildings in multiple directions. Especially, large vibration responses often occur in the vertical direction. Under vertical seismic actions, components may yield and fail to meet the bearing capacity requirements of the structure, causing the superstructure to be unable to be in the elastic state during large earthquakes or to remain in the initial state of elastoplastic deformation. Therefore, only horizontal isolation is not enough, and research on three-dimensional isolation structures and three-dimensional isolation bearings that support vertical isolation is needed.

[0004] At present, many attempts have been made to reduce horizontal and vertical seismic actions by inventing an undetermined three-dimensional isolation bearing. Many three-dimensional earthquakes have been tested for feasibility. For example, air springs and hydraulic oil are used for vertical isolation. However, the disadvantages of these devices cannot be ignored. The original seismic isolation building technology has poor seismic isolation effect, and the isolation structure is single. The ability to resist torsion / sway / overturning problems is very poor, and it can only rely on gravity to resist the earthquake overturning force, which limits the application of the isolation structure in high-rise buildings and cannot achieve the expected effect. Summary of the Invention

[0005] The purpose of the present invention is to provide a separated anti-sway three-dimensional isolation structure to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A separated anti-sway three-dimensional isolation structure, including a superstructure, a horizontal isolation device, a basement, a vertical limit sliding plate, a vertical isolation device, and a foundation pit. The vertical isolation device is fixed on the foundation pit and is used to carry the basement. The vertical isolation device is a lead-rubber bearing or a thick-layer rubber bearing; the horizontal isolation device is installed on the top of the basement, and the superstructure is carried above the horizontal isolation device; there is a gap between the four sides of the basement and the foundation pit, and a vertical limit sliding plate connecting the foundation pit retaining wall and the basement is installed in this gap.

[0007] Preferably, the vertical limit sliding plate comprises a limit fixing plate and a limit sliding plate, and the length of the limit fixing plate is longer than that of the limit sliding plate.

[0008] Preferably, a cavity structure is formed by enclosing the front end of the limit fixing plate, and the limit sliding plate is arranged inside the front end of the limit fixing plate and can move up and down along the cavity structure.

[0009] Preferably, the number and arrangement mode of the horizontal isolation devices correspond to the number and arrangement of the columns of the upper structure.

[0010] Preferably, the number and arrangement mode of the vertical isolation devices correspond to the number and arrangement of the columns of the basement.

[0011] Preferably, the upper part of the above-mentioned vertical isolation device is connected to the basement. In order to install the vertical limit sliding plate smoothly, there is a certain gap between the basement and the foundation pit retaining wall around the basement. The length of the extended part of the beam of the basement reaches the gap for fixing the vertical limit sliding plate.

[0012] Preferably, one end of the vertical limit sliding plate is fixed to the extended part of the beam, and the other end is fixed to the foundation pit retaining wall. The vertical limit sliding plate enables the overall structure to slide only vertically during an earthquake and can control the overall torsional / rocking / overturning motion occurring under the earthquake action.

[0013] Preferably, there are several horizontal isolation devices between the basement and the upper structure, which control the horizontal earthquake action received by the upper structure.

[0014] Preferably, the horizontal isolation device and the vertical isolation device are: isolation devices widely recognized and used in current engineering in existing isolation technologies, including but not limited to lead rubber bearings and thick rubber bearings.

[0015] Preferably, the basement is a frame structure.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] The three-dimensional isolation structure of the present invention enables the upper structure to have a three-dimensional six-direction isolation effect through the separately arranged horizontal isolation device and vertical isolation device. Under the earthquake action, the overall structure moves vertically during the earthquake and controls the rocking through the vertical limit sliding plate and the vertical isolation device. Due to the limiting effect of the vertical limit sliding plate, the problems of building torsion / rocking / overturning under the earthquake can be controlled simultaneously. Furthermore, the use function of the building structure is guaranteed and the structural safety is improved. Brief Description of the Drawings

[0018] Figure 1 is a schematic structural diagram of the present invention;

[0019] Figure 2This is the structural diagram of the vertical limit sliding plate bearing of the present invention;

[0020] Figure 3 This is the top view of the layout of the vertical limit sliding plate bearing in Embodiment 1;

[0021] Figure 4 This is the layout diagram of the vertical limit sliding plate bearing in Embodiment 2;

[0022] Figure 5 This is the construction sequence diagram of the vertical limit sliding plate of the present invention.

[0023] In the figure: 1. Upper structure; 2. Horizontal isolation device; 3. Basement; 4. Vertical limit sliding plate; 5. Vertical isolation device; 6. Foundation pit; 7. Limit fixing plate; 8. Limit sliding plate; 9. Basement wall. Detailed implementation manners

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0025] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "vertical", "upper", "lower", "horizontal", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

[0026] In the description of the present invention, it should also be noted that unless otherwise clearly defined and limited, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] Embodiment 1:

[0028] Such as Figure 1As shown in the figure, the present invention provides a separable anti-sway three-dimensional seismic isolation structure, which includes: an upper structure 1, a horizontal seismic isolation device 2, a basement 3, a vertical limit sliding plate 4, a vertical seismic isolation device 5, and a foundation pit 6. Among them, a plurality of vertical seismic isolation devices 5 are fixed above the foundation pit 6 to isolate the vertical seismic action received by the basement 3 and the upper structure 1; the upper part of the vertical seismic isolation device 5 is connected to the basement 3. In order to install the vertical limit sliding plate 4 smoothly, there is a certain gap between the retaining wall of the basement 3 and the foundation pit 6 around the basement 3.

[0029] In this embodiment, the length of the extended part of the beam of the basement 3 extends to the gap for fixing the vertical limit sliding plate 4; one end of the vertical limit sliding plate 4 is fixed to the extended part of the beam, and the other end is fixed to the retaining wall of the foundation pit 6. The vertical limit sliding plate 4 enables the overall structure to only slide vertically during an earthquake and can control the overall torsional / swaying / overturning motion occurring under seismic action.

[0030] In this embodiment, there are several horizontal seismic isolation devices 2 between the basement 3 and the upper structure 1, which control the horizontal seismic action received by the upper structure.

[0031] As Figure 2 shown, Figure 2 is the structural drawing of the vertical limit sliding plate support; the vertical limit sliding plate 4 is mainly composed of a limit fixing plate 7 and a limit sliding plate 8. The length of the limit fixing plate 7 is longer than that of the limit sliding plate 8. The limit fixing plate 7 encloses a cavity, and the limit sliding plate 8 moves up and down inside the cavity.

[0032] In this embodiment, to ensure the smooth up and down sliding of the limit fixing plate 7 and the limit sliding plate 8, there is a small gap between the limit fixing plate 7 and the limit sliding plate 8 and lubricating oil is applied.

[0033] As Figure 3 shown, Figure 3 is the top view of the layout scheme of the vertical limit sliding plate support. Figure 3 Taking Figure 1 as the side view, vertical limit sliding plates 4 are installed around the basement 3. The layout method is to arrange them at the bottom and top of the outermost sides around. The vertical limit sliding plates 4 are not arranged in the horizontal and vertical middle parts around the basement 3. A total of sixteen vertical limit sliding plates 4 are installed in the scheme. The limit fixing plate 7 is installed on the retaining wall of the foundation pit 6, and the limit sliding plate 8 is installed on the extended part of the beam of the basement 3.

[0034] Embodiment 2:

[0035] As Figure 4 shown, the difference between this embodiment and Embodiment 1 is:

[0036] The number of vertical limit sliding plates 4 used in this example is increased to forty-eight. The arrangement method is that the beams around the basement 3 all extend outward for a certain length to the gap between the retaining wall of the foundation pit 6, and vertical limit sliding plates 4 are installed on the extended parts of the beams. In this scheme, sixteen vertical ones are arranged on the first basement floor, and there are three layers of beams extending outward, so the total number of vertical limit sliding plates 4 arranged is forty-eight.

[0037] Embodiment 3:

[0038] As Figure 5 shown, Figure 5 are the front view and side view of the construction process on one side of the basement 3. This embodiment provides the construction sequence of the vertical limit sliding plate. Among them, Figures a1 and a2 are the side view and front view before the installation of the vertical limit sliding plate 4. The frame of the basement 3 has been initially poured and the gap with the retaining wall of the pit 6 is reserved. The beams designed to install the vertical limit sliding plate 4 have extended outward. At this time, the basement wall 9 has not been poured yet. Figures b1 and b2 are the side view and front view when the vertical limit sliding plate 4 is installed. The limit sliding plate 8 is fixed on the extended part of the beam, and the limit fixing plate 7 is fixed at the corresponding position of the retaining wall of the foundation pit 6. After the installation of the vertical limit sliding plate 4 is completed, the pouring of the basement wall 9 is carried out. Figures c1 and c2 are the side view and front view after the installation of the vertical limit sliding plate 4.

[0039] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A separable anti-sway three-dimensional seismic isolation structure, characterized in that, It includes a superstructure (1), a horizontal isolation device (2), a basement (3), a vertical position-limiting sliding plate (4), a vertical isolation device (5), and a foundation pit (6). The vertical isolation device (5) is fixed on the foundation pit (6) and is used to bear the basement (3). The vertical isolation device (5) is a lead rubber bearing or a thick layer rubber bearing. The horizontal isolation device (2) is installed on the top of the basement (3), and the superstructure (1) is borne above the horizontal isolation device (2). A gap is provided between the periphery of the basement (3) and the foundation pit (6), and a vertical position-limiting sliding plate (4) connecting the retaining wall of the foundation pit (6) and the basement (3) is installed in this gap. The vertical position-limiting sliding plate (4) includes a position-limiting fixed plate (7) and a position-limiting sliding plate (8). The length of the position-limiting fixed plate (7) is longer than that of the position-limiting sliding plate (8). One end of the vertical position-limiting sliding plate (4) is fixed to the extended part of the beam, and the other end is fixed to the retaining wall of the foundation pit (6). The upper part of the vertical isolation device (5) is connected to the basement (3). The number and arrangement of the vertical isolation devices (5) correspond to the number and arrangement of the columns of the basement (3).

2. The separable anti-sway three-dimensional seismic isolation structure according to claim 1, wherein: The front end of the position-limiting fixed plate (7) encloses a cavity structure, and the position-limiting sliding plate (8) is arranged inside the front end of the position-limiting fixed plate (7) and can move up and down along the cavity structure.

3. The separable anti-sway three-dimensional seismic isolation structure according to claim 1, characterized in that: The number and arrangement of the horizontal isolation devices (2) correspond to the number and arrangement of the columns of the superstructure (1).

4. A separable anti-sway three-dimensional seismic isolation structure according to claim 1, characterized in that: The basement (3) is a frame structure.

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