Inertia-enhanced floating floor structure system

Abstract

The present invention provides an inertial enhanced floating floor structure system, comprising: a plurality of inertial enhanced floating floors and vertical support structures; the inertial enhanced floating floor includes a precast slab, a plurality of inertial vibration damping components and a plurality of seismic isolation bearings, one end of the inertial vibration damping component is hinged to the lower surface of the precast slab, and the other end is hinged to the vertical support structure, for horizontally connecting the precast slab to the vertical support structure and located inside the vertical support structure; the seismic isolation bearing is fixed to the lower surface of the precast slab, for providing vertical support to the precast slab and simultaneously reducing the horizontal vibration of the precast slab; the inertial vibration damping component includes an inertial element, a damping element and an elastic element which are fixedly connected. The present invention greatly reduces the problem of excessive displacement response between the floor slab and the main structure in the traditional floating floor structure system, and at the same time has an obvious inhibitory effect on the dynamic response of the main structure and the dynamic response of the auxiliary equipment on the slab.

Description

Technical Field

[0001] The present invention relates to the technical field of construction engineering, and particularly relates to an inertial enhanced floating floor structure system. Background Art

[0002] With the development of the urbanization process, more and more people are concentrating in cities. As a result, the harm of urban earthquake disasters has been continuously escalating, which has put forward higher requirements for the traditional building seismic design concept. Under the action of dynamic loads such as ground motion and environmental vibration, the dynamic response of structures and their internal auxiliary equipment is related to the safety and comfort of the structures and their auxiliary equipment, and is a hot topic in the field of structural engineering. Especially since the 1940s, the shock absorption design theory has been comprehensively developed globally, and a variety of shock absorption measures have been systematically developed and applied in practical engineering. From the perspective of improving the seismic performance of structures, in recent years, the "three-level" design earthquake intensity level and the "two-stage" seismic design method have gradually been formed to ensure that the building structure has sufficient strength under minor earthquakes and ductility performance under major earthquakes. Generally speaking, the seismic design idea is to conduct comprehensive design according to different ground motion levels and expected structural performances in the local area under the existing economic conditions, in order to make full use of the elastic and plastic energy dissipation capabilities of the structure itself to ensure the safety of people's lives and property.

[0003] The existing seismic design methods rely on the plastic failure of the structure itself to consume the energy of earthquakes. Affected by factors such as the randomness of ground motion, the design difficulty is increased, and the economy in post-earthquake repair is also poor.

[0004] Compared with the existing seismic design methods, the energy dissipation and shock absorption technology reduces the energy absorbed by the main structure of the building by dissipating the main earthquake energy through the energy dissipation device arranged at a specific position of the structure under the action of earthquakes, thereby protecting the main structure of the building and playing a role in shock absorption. After years of development, various forms of energy dissipation and shock absorption structures have been proposed. For example, the tuned mass damper is a typical energy dissipation and shock absorption device. By setting a tuned oscillator at the top of the structure, part of the earthquake energy input is absorbed by the tuned oscillator and further dissipated through the damper, thereby reducing the seismic response of the main structure. It should be noted that this technology requires an additional mass block to be attached to the structure, and the excessive mass block will affect the normal use of the building; moreover, the shock absorption system of the tuned mass damper has a high dependence on the parameters of the additional sub-structure and the spectral characteristics of ground motion, and is prone to detuning problems, thereby amplifying the seismic response.

[0005] Compared with the energy dissipation and seismic reduction technology, the base isolation technology isolates the superstructure from the foundation by setting isolation devices with relatively small horizontal stiffness and relatively large vertical stiffness at the bottom of the structure, so that the characteristic period of the superstructure avoids the main frequency band of the ground motion, thereby reducing the inter-story displacement response of the superstructure. However, its disadvantage is that the absolute displacement of the isolation layer of the base isolation structure is usually large. By setting dampers in the isolation layer, the energy of the ground motion can be effectively dissipated, thereby reducing the absolute displacement response. However, excessive damping will weaken the isolation mechanism. Therefore, in actual design, it is necessary to optimize the design of the isolation layer stiffness and damping to achieve the desired design effect.

[0006] After years of development, the base isolation technology has been recognized by scholars and engineers around the world and written into the code for guiding design. However, the base isolation technology is mainly applied to multi-high-rise building structures with good site conditions. When the structure height is too large or the structure site conditions are poor, the isolation technology cannot effectively avoid the main frequency band of the ground motion of the structural system, resulting in the failure of this technology.

[0007] In order to overcome the problem of insufficient tuning mass in the traditional tuned mass damper seismic reduction method and the application limitations of the base isolation measures in multi-high-rise buildings, the isolation bearings are set on a certain floor of the multi-high-rise building to divide the entire structure into two parts. The upper isolated part plays the role of a tuned mass damper under the input of dynamic loads without adding additional mass, that is, the so-called partial mass isolation measure (Partical mass isolation / PMI), which effectively combines the advantages of the tuned mass seismic reduction measure and the base isolation measure, and can effectively improve the seismic performance of mid-high-rise building structures. At the same time, this technology can selectively isolate specific structural systems, components, specific floors or floor slabs, and has various application forms, such as high-rise building isolation, mega-substructure isolation and floating floor, etc.

[0008] The floating floor measure is an application form of the partial mass isolation measure. This technology achieves the seismic reduction effect by setting isolation devices between the floor slab (all or part) and the structural vertical support system. All along, the floating floor technology has been used to reduce the dynamic response of the facilities and precision instruments in the building under vertical vibration. Considering the response problem of the structure under horizontal ground motion, two methods of increasing the floating mass of the traditional floating floor system or reducing the floating support stiffness can improve the seismic reduction effect of the main structure and the attached structure. However, it must be pointed out that increasing the floating mass not only affects the safety of the structure but also is not conducive to engineering applications; reducing the floating support stiffness will affect the normal service performance of the structure on the slab. In addition, increasing the floating mass or reducing the floating support stiffness will both increase the isolation period, which will inevitably lead to excessive displacement response of the floating floor. The excessive displacement response makes the design between the floor slab and the main structure too complicated and also restricts the popularization and application of the floating floor technology.

[0009] Therefore, there is an urgent need for a new floating floor structure system that can not only reduce the excessive displacement response problem between the floor slab and the main structure in the floating floor system, but also significantly suppress the dynamic response of the main structure and the dynamic response of the auxiliary equipment on the slab. Summary of the Invention

[0010] The present invention provides an inertia-enhanced floating floor structure system to solve the defects in the prior art problems.

[0011] To achieve the above object, the present invention adopts the following technical solutions.

[0012] An embodiment of the present invention provides an inertia-enhanced floating floor structure system, including: a plurality of inertia-enhanced floating floor slabs and a vertical support structure;

[0013] The inertia-enhanced floating floor slab includes a precast slab, a plurality of inertia damping components and a plurality of isolation bearings; one end of the inertia damping component is hinged to the lower surface of the precast slab, and the other end is hinged to the vertical support structure, for horizontally connecting the precast slab to the vertical support structure and located inside the vertical support structure; the isolation bearing is fixed to the lower surface of the precast slab, for providing vertical support to the precast slab and reducing the horizontal vibration of the precast slab at the same time.

[0014] The inertia damping component includes an inertia element, a damping element and an elastic element fixedly connected.

[0015] Preferably, the vertical support structure includes a plurality of frame columns and a plurality of frame beams;

[0016] A plurality of frame beams are horizontally fixed between every two frame columns, and the number and height of the frame beams between every two frame columns are the same.

[0017] Preferably, one end of the inertia damping component is hinged to the lower surface of the precast slab through a plate-type suspended inertia damping system connecting piece, and the other end is hinged to the frame column of the vertical support structure through a beam-type suspended inertia damping system connecting piece, and the inertia damping component is a suspended inertia damping component.

[0018] Preferably, a corbel is installed on the inner side surface of the frame beam, and the upper surface of the corbel is fixedly connected to the lower end of the isolation bearing through bolts.

[0019] Preferably, the vertical support structure is a frame structure, a frame-shear wall structure, a shear wall, a frame-core tube structure, a tube-in-tube structure, a bundled tube structure, and a tube frame and mega-brace structure with supports or rigid arms.

[0020] Preferably, the structure of the inertial damping component is such that any two of the inertial element, the damping element, and the elastic element are connected in parallel and then connected in series with the third element.

[0021] Preferably, the structure of the inertial damping component is that the inertial element is connected in series with the elastic element and then connected in parallel with the damping element, or the structure of the inertial damping component is that the inertial element is connected in series with the damping element and then connected in parallel with the elastic element.

[0022] Preferably, a fixed floor slab is installed under the seismic isolation bearing to support the floating floor slab.

[0023] Preferably, the distance between the edge of the precast slab and the vertical support structure is greater than or equal to the design value of the safety distance, and the design value of the safety distance is calculated and determined according to the actual engineering structure conditions and load characteristics.

[0024] As can be seen from the technical solution provided by the inertial enhanced floating floor slab structure system of the present invention described above, the present invention has the following beneficial effects:

[0025] 1. Compared with the structure system without a floating floor slab, the inertial enhanced floating floor slab structure system of the present invention can reduce the inter-story displacement of the main structure by more than 50% and reduce the acceleration response on the floor slab by more than 80%; compared with the traditional floating floor slab structure system, the inertial enhanced floating floor slab system of the present invention can reduce the inter-story displacement response of the main structure by more than 10% and reduce the acceleration response of the auxiliary equipment (cultural relics, important equipment, etc.) on the floor slab by more than 20%, and can effectively reduce the dynamic response of the main structure under seismic motion and environmental vibration and the dynamic response of the main structure on the floor slab under seismic motion and environmental vibration;

[0026] 2. Compared with the traditional floating floor slab structure system, the inertial enhanced floating floor slab structure system of the present invention can greatly reduce the relative displacement response between the floating floor slab and the main structure by more than 40%, and can realize the optimal design of the shock / vibration reduction performance of the main structure and the auxiliary facilities on the floating floor slab under the condition of limited deformation space between the floor slab and the main structure; at the same time, the relative displacement between the floor slab and the main structure is reduced, which can simplify the complex structural requirements between the floor slab and the main structure;

[0027] 3. The inertial enhanced floating floor slab structure system of the present invention can be used to design a new floating floor slab structure system to achieve shock absorption optimization of the main structure and the auxiliary equipment (cultural relics, important equipment, etc.) on the slab; it can also be used to transform the traditional floating floor slab structure system to achieve the improvement of the dynamic performance of the existing building structure and the auxiliary facilities on the floor slab under seismic motion and environmental vibration, with simple structure, convenient application and obvious effect;

[0028] 4. The inertial enhanced floating floor structure system of the present invention can control the responses of the main structure and attached equipment (cultural relics, important equipment, etc.) under seismic motion, and is used to control the dynamic responses of the main structure and attached equipment (cultural relics, important equipment, etc.) under similar dynamic actions such as environmental vibration, with a wide application space;

[0029] 5. The inertial enhanced floating floor structure system of the present invention has a simple structure, is convenient to apply, economical and effective. The inertial vibration damping components can be easily disassembled and replaced, facilitating post-earthquake repair and rapid restoration of building functions. At the same time, it can also be optimized in function design according to the requirements during the building's use process.

[0030] Additional aspects and advantages of the present invention will be given in part in the following description, which will become apparent from the following description, or can be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0032] Figure 1 Schematic diagram of the inertial enhanced floating floor structure system;

[0033] Figure 2 Bottom view of the inertial enhanced floating floor structure system;

[0034] Figure 3 Top view of the inertial enhanced floating floor structure system;

[0035] Figure 4 Cross-sectional view of the inertial enhanced floating floor structure system;

[0036] Figure 5 Schematic diagram of the structure of the inertial vibration damping component;

[0037] Figure 6 Construction flow chart of the inertial enhanced floating floor structure system using Embodiment 1;

[0038] Figure 7 Schematic diagram of the safe distance between the floating floor and the main structure;

[0039] Figure 8 Schematic diagram of the traditional floating floor structure system - five-story building;

[0040] Figure 9 Schematic diagram of the structure of the five-story building in Embodiment 2 using the inertial enhanced floating floor structure system of this embodiment;

[0041] Figure 10 For Embodiment 2, a graph showing the variation trends of the inter-story displacement of the main structure top layer, the absolute acceleration of the top floating floor, and the displacement response of the top floating floor relative to the main structure with respect to the inertance ratio is given;

[0042] Figure 11 A schematic diagram showing the variation laws of the displacement of the top floating floor relative to the main structure, the absolute acceleration of the top floating floor, and the inter-story displacement response of the main structure top layer with respect to the inertia system stiffness ratio and damping ratio for Embodiment 2;

[0043] Figure 12 A schematic diagram for comparing the shock absorption effects of the inertia-enhanced floating floor system and the traditional floating floor structure system in Embodiment 2.

[0044] Description of the reference signs:

[0045] 1. Frame column; 2. Frame beam (main beam and secondary beam); 3. Prefabricated slab; 4. Corbel; 5. Beam-type suspended inertia vibration damping system connector; 6. Suspended inertia vibration damping component; 7. Isolation bearing; 8. Plate-type suspended inertia vibration damping system connector; 9. Bolt; 10. Isolation bearing connector; 11. Bolt; 12. Plate-type suspended inertia vibration damping system connector; 13. Locking part; 14. Locking part connector; k. Elastic element; c. Damping element; b. Inertia element. Detailed implementation manners

[0046] The following details the implementation manners of the present invention. The examples of the implementation manners are shown in the drawings, where the same or similar reference signs represent the same or similar elements or elements with the same or similar functions from beginning to end. The implementation manners described below with reference to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0047] Those skilled in the art of the present technology can understand that unless specifically stated, the singular forms "a", "an", "the", and "said" used herein may also include the plural forms. It should be further understood that the term "including" used in the specification of the present invention means the presence of the described features, integers, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or their groups. It should be understood that when we say an element is "connected" or "coupled" to another element, it can be directly connected or coupled to other elements, or there may also be intermediate elements. In addition, the "connection" or "coupling" used herein may include wireless connection or coupling. The phrase "and / or" used herein includes any unit and all combinations of one or more related listed items.

[0048] Those skilled in the art can understand that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by those of ordinary skill in the field to which the present invention belongs. It should also be understood that terms such as those defined in a general dictionary should be understood to have a meaning consistent with the meaning in the context of the prior art, and will not be interpreted in an idealized or overly formal sense unless defined as such herein.

[0049] For the convenience of understanding the embodiments of the present invention, the following will further explain and illustrate with specific embodiments in conjunction with the drawings, and it does not constitute a limitation to the embodiments of the present invention.

[0050] Embodiment 1

[0051] This embodiment provides an inertial enhanced floating floor structure system, including: 3 inertial enhanced floating floors and 1 vertical support structure. Figure 1 It is a schematic diagram of the inertial enhanced floating floor structure system.

[0052] Figure 2 It is the bottom view of the inertial enhanced floating floor structure system of this embodiment. Figure 3 It is the top view of the inertial enhanced floating floor structure system of this embodiment. Figure 4 It is the cross-sectional view of the inertial enhanced floating floor structure system of this embodiment, referring to Figure 2 、 Figure 3 and Figure 4, the inertia-enhanced floating floor slab includes a precast slab 3, a number of inertia damping components, and a number of seismic isolation bearings 7 (in this embodiment, 4 inertia damping components and 8 seismic isolation bearings are used). The inertia damping components in this embodiment are suspended inertia damping components 6. One end of the suspended inertia damping component 6 is hingedly connected to the lower surface of the precast slab 3, and the other end is hingedly connected to the vertical support structure, for horizontally connecting the precast slab 3 to the vertical support structure, and the precast slab 3 is located inside the vertical support structure. The vertical support structure includes a number of frame columns 1 and a number of frame beams 2. Horizontally, a number of frame beams are fixed between every two frame columns 1. Schematically, in this embodiment, 4 frame columns 1 and 12 frame beams 2 are used. Horizontally, 3 frame beams are fixed between every two frame columns 1, and the number and height of the frame beams between every two frame columns are the same. Among them, the vertical support structure may also include a wall structure on the frame; the bottom surface of each precast slab 3 is higher than the top surface of the corresponding frame beam 2. The floating floor slab located at the top layer of the vertical support structure in this embodiment can also be called a floating roof slab. The seismic isolation bearing 7 is fixed to the lower surface of the precast slab 3, for providing vertical support to the precast slab and reducing the horizontal vibration of the precast slab at the same time. The vertical support structure can be a frame structure, a frame-shear wall structure, a shear wall, a frame-core tube structure, a tube-in-tube structure, a bundled tube structure, and a tube frame or mega support structure with braces or rigid arms.

[0053] The inertia damping component includes an inertia element, a damping element, and an elastic element that are fixedly connected. Figure 5 is a structural schematic diagram of the inertia damping component in this embodiment. Refer to Figure 5 , there are 5 connection situations for the inertia damping component, which are respectively: the structure of the inertia damping component is that any two of the inertia element b, the damping element c, and the elastic element k are connected in parallel and then connected in series with the third element; the inertia element b is connected in series with the elastic element k and then connected in parallel with the damping element c, or the structure of the inertia damping component is that the inertia element b is connected in series with the damping element c and then connected in parallel with the elastic element k.

[0054] One end of the suspended inertia damping component 6 is hingedly connected to the lower surface of the precast slab 3 through a plate-type suspended inertia damping system connector 8, and the other end is hingedly connected to the frame column 1 of the vertical support structure through a beam-type suspended inertia damping system connector 5.

[0055] A corbel 4 is also installed on the inner side surface of the frame beam 2, and the upper surface of the corbel 4 is fixedly connected to the lower end of the seismic isolation bearing 7 through bolts.

[0056] In the case of no corbel 4, a fixed floor slab can also be installed under the seismic isolation bearing 7 to support the floating floor slab.

[0057] Preferably, a safety distance requirement should be satisfied between the floating floor slab and the main structure, and the safety distance is calculated and determined according to the specific engineering situation and load conditions. Schematically, in this embodiment, a square notch is provided at each corner of the square precast slab to ensure the safety distance between the floating floor slab and the main structure.

[0058] The inertial enhanced floating floor slab structure system of this embodiment is specifically arranged for the seismic reduction target in multi-high-rise structures. Part of the floors of the building structure can be set as the inertial enhanced floating floor slab system of this embodiment, and the other floors are traditional structure systems; alternatively, part of the space on specific floors of the building structure can be set as the inertial enhanced floating floor slab system of this embodiment, and the other spaces on the same floor are traditional structure systems.

[0059] Figure 6 For the construction flow chart of adopting the inertial enhanced floating floor slab structure system of this embodiment, refer to Figure 6 , in which the structural vertical support system (frame beams, frame columns and walls) is cast integrally on site or prefabricated in the factory; the bracket embedded parts are installed during the pouring process of the beam structure; the connecting parts of the beam-type suspended inertial vibration reduction system are embedded at the beam-column joints. After the construction of the vertical support system is completed, the brackets and isolation bearings are installed on the side of the beam; at the same time, the floating floor slabs are prefabricated in the factory, and the suspended inertial vibration reduction components and the connecting parts of the isolation bearings are installed during the concrete pouring process; finally, the floating floor slabs (floating roof slabs and floor slabs) are hoisted and installed, and the suspended inertial vibration reduction components are installed at the same time. Under seismic action and environmental vibration (such as traffic environmental vibration caused by the subway, etc.), the inertial enhanced floating floor slab system can absorb part of the energy, greatly reduce the dynamic response of the main structure (columns, beams, walls), and at the same time can play a good protective role for sensitive equipment (cultural relics, precision instruments, etc.) on the floor slab.

[0060] One advantage of the inertial enhanced floating floor slab structure system of this embodiment compared with the traditional floating floor slab structure system is that the relative displacement response between the floating floor slab and the main structure is effectively controlled. Figure 7 For the schematic diagram of the safety distance between the floating floor slab and the main structure of this embodiment, as Figure 7 shown, under the input of dynamic load, a relative movement safety distance needs to be reserved between the floating floor slab structure and the main structure (column). If the safety distance is too large, the structure between the floor slab and the main structure will be too complex. Applying the inertial enhanced floating floor slab system of this embodiment can greatly reduce the relative displacement between the floor slab and the main structure (more than 40% less than the traditional floating floor slab structure system).

[0061] Embodiment Two

[0062] The following is an illustration of the effect by taking a five-story building adopting the inertial enhanced floating floor slab structure system as an application. Figure 8 For the schematic diagram of a five-story building with a traditional floating floor slab structure system. Figure 9Schematic diagram of the inertial enhanced floating floor structure system of this embodiment used in all five floors of the building. Refer to Figure 8 , the floating floor is connected to the main structure through a general isolation bearing. Refer to Figure 9 , the general inertial enhancement system and the isolation bearing between the floating floor and the main structure are connected in parallel. Among them, m s is the concentrated mass of each floor of the main structure (including the frame beams, frame columns, walls and part of the floor slabs of each floor); m f is the mass of the floating floor of each floor (either all or part of the floor slabs are floating); k0 is the inter-story horizontal stiffness; k t is the horizontal stiffness of the isolation bearing; ζ n is the damping ratio of each vibration mode of the main structure; k t is the stiffness of the traditional isolation bearing; c t is the damping of the traditional isolation bearing; k In is the horizontal stiffness of the inertial system; c In is the damping of the inertial system; b is the inertance coefficient of the inertance device in the inertial system. The calculation material parameters of this embodiment are set as shown in Table 1 below:

[0063] Table 1 Structural parameter table

[0064]

[0065] Introduce the inertance ratio (the ratio of the inertance coefficient of the inertance device to the total mass of each floor of the structure) μ In = b / (m s + m f ) and the floating floor mass ratio (the ratio of the mass of the floating floor of each floor to the total mass of that floor) μ f = m f / (m s + m f ). At the same time, let the damping ratio α = c In / c t and the stiffness ratio β = k In / k t . Taking the responses of the top floor of the main structure and the floating floor as an example, Figure 10 This figure shows the variation trends of the inter-story displacement of the top floor of the main structure, the absolute acceleration of the top floating floor, and the displacement response of the top floating floor relative to the main structure with the inertance ratio in this application embodiment. Among them, 10-a shows the variation trend of the displacement response of the top floating floor relative to the main structure with the inertance ratio in this application embodiment; 10-b shows the variation trend of the absolute acceleration of the top floating floor with the inertance ratio; 10-c shows the variation trend of the inter-story displacement response of the top floor of the main structure with the inertance ratio; μ f= 50%, α = 0.4, β = 0.3. The figure shows the responses and their means under 10 randomly selected ground motion excitations as shown in Table 2, and the black dashed line is the response curve corresponding to the 95% confidence interval. It is calculated that under the same conditions with μ f = 50%, the mean values of the maximum responses of the inter-story displacement at the top floor of the main structure, the absolute acceleration of the floating floor at the top floor, and the displacement of the floating floor at the top floor relative to the main structure of a five-story building designed with a traditional floating floor structure under 10 ground motions are 1.768×10 -3 m, 3.088 m / s 2 , 0.2457 m.

[0066] Table 2 Earthquake Record Sheet

[0067]

[0068] It can be seen from Figure 10 that the displacement response of the floating floor at the top floor relative to the main structure is less than 0.2457 m and first decreases and then increases with the increase of the inertance coefficient. In the range of 0.1 ≤ μ In ≤ 0.2, there is a minimum value of the displacement response of the floating floor at the top floor relative to the main structure. This shows that after introducing the inertial system, the relative displacement between the floating floor and the main structure can be effectively reduced. The absolute acceleration response of the floating floor at the top floor first decreases and then increases with the increase of the inertance coefficient. When μ In ≤ 0.15, the absolute acceleration response of the floating floor at the top floor is less than 3.088 m / s 2 , and when μ In ≈ 0.10, the response reaches the minimum value, indicating that adopting the floating floor structure system with inertial enhancement is beneficial to reducing the acceleration response of the floating floor. With the increase of the inertance-mass coefficient, the inter-story displacement response of the main structure generally shows a trend of first decreasing and then increasing, and the response reaches the minimum value when μ In ≈ 0.10, and this response is less than 1.768×10 -3 m, which means that introducing the inertial system can play a certain role in reducing the inter-story displacement response of the main structure.

[0069] In summary, under the same conditions, compared with the traditional floating floor structure system, adopting the floating floor structure system with inertial enhancement can reduce the inter-story displacement at the top floor of the main structure, the absolute acceleration of the floating floor at the top floor, and the displacement of the floating floor at the top floor relative to the main structure to varying degrees.

[0070] Figure 11Schematic diagrams showing the variation laws of the displacement of the top floating floor relative to the main structure, the absolute acceleration of the top floating floor, and the inter-story displacement response of the main structure top with respect to the stiffness ratio and damping ratio of the inertial system. Among them, 11-a is the diagram showing the variation law of the displacement of the top floating floor relative to the main structure with respect to the stiffness ratio and damping ratio of the inertial system; 11-b is the diagram showing the variation law of the absolute acceleration of the top floating floor with respect to the stiffness ratio and damping ratio of the inertial system; 11-c is the schematic diagram showing the variation law of the inter-story displacement response of the main structure top with respect to the stiffness ratio and damping ratio of the inertial system; μ f = 50%, μ In = 0.1. The values on the contour lines in the figure are the mean values of the maximum real responses under 10 ground motions, with the units being m, m / s 2 , m. Figure 11 -a, it can be seen that the displacement response of the top floating floor gradually decreases as the damping ratio and stiffness ratio increase simultaneously. The origin of the coordinate can be considered as degenerating into a traditional floating floor structure system. From the numerical changes of the contour lines, it can be seen that when α≈1, β≈0.5, the displacement response of the top floating floor can be reduced from 0.25 m to 0.16 m. Figure 11 -b, it can be seen that the acceleration response of the top floating floor first decreases and then increases as the stiffness ratio increases, and gradually decreases as the damping ratio increases. When α≈1.5, β≈0.5, the acceleration response of the top floating floor can be reduced to a certain extent. Figure 11 -c, it can be seen that when α≈1, β≈0.5, the inter-story displacement of the main structure top can be reduced from 1.8×10 -3 m to 1.65×10 -3 m.

[0071] In summary, appropriate damping and stiffness of the inertial system can reduce the responses of the floating floor and the main structure to varying degrees.

[0072] Consider the response comparison between the inertial-enhanced floating floor system (I-floating slab) and the traditional floating floor structure (Floating slab) system under 10 ground motions under the same conditions. Figure 12 is the schematic diagram for comparing the shock absorption effects of the inertial-enhanced floating floor system and the traditional floating floor structure system of this embodiment, where μ f = 50%. The filled column part represents the traditional floating floor structure system; the diagonally filled column part represents the inertial-enhanced floating floor structure system, where μ In = 0.1, α = 2.0, β = 1.0. At the same time, the responses of the traditional floating floor structure system are compared dimensionless. Figure 12-a compared the relative displacement responses of the floating floor under 10 different earthquake actions for the two structural systems. Compared with the traditional floating floor structural system, the floating floor structural system with enhanced inertia has a varying degree of reduction in the relative displacement of the floating floor under 10 different earthquake actions. By analyzing the mean responses of the two structural systems, it can be seen that the dimensionless relative displacement response of the floating floor decreases from 1.00 to 0.59, a decrease of 41%. Figure 12 -b compared the dimensionless acceleration responses of the floating floor under 10 earthquake actions for the two structural systems. Compared with the traditional floating floor structural system, the floating floor structural system with enhanced inertia has a varying degree of reduction in the acceleration of the floating floor under 10 different earthquake actions. By analyzing the mean responses of the two structural systems, it can be known that the dimensionless acceleration response decreases from 1.00 to 0.78, a decrease of 22%. Figure 12 -c It can be seen that the dimensionless top-story inter-story displacement responses of the two structural systems have varying degrees of reduction under 10 different earthquake actions, and the mean value decreases by 10% (from 1.00 to 0.90), that is, the floating floor system with enhanced inertia has a certain degree of shock absorption effect on the inter-story displacement response of the main structure.

[0073] In summary, the design of the floating floor system with enhanced inertia brings new breakthroughs to structural design. Due to the limitation of the distance between the floating floor and the main structure, the use of the floating floor structural system with enhanced inertia can significantly reduce this safety distance, and can reduce the possibility of collision between components under earthquake actions, relaxing the restrictive conditions for the requirements of the structural building space, and providing a new option for engineering practitioners.

[0074] Those skilled in the art should understand that the above application types are only examples. Other existing or future possible application types that are applicable to the embodiments of the present invention should also be included within the protection scope of the present invention and are hereby incorporated by reference.

[0075] Those skilled in the art should understand that Figure 1 the number of various elements shown only for simplicity may be less than that in an actual floating floor structural system with enhanced inertia, but this omission undoubtedly does not affect the clear and sufficient disclosure of the embodiments of the invention.

[0076] Each embodiment in this specification is described in a progressive manner. For the same or similar parts among the embodiments, reference can be made to each other, and the key point of each embodiment is to illustrate the differences from other embodiments. In particular, for the device embodiments, reference can be made to the relevant descriptions in the method embodiments. The device and system embodiments described above are only illustrative. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed to multiple units. Some or all of the components can be selected according to actual needs to achieve the purpose of the solution of this embodiment. A person of ordinary skill in the art can understand and implement it without creative work.

[0077] As described above, the above is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. An inertial enhanced floating floor structure system, characterized in that, Including: A number of inertia-enhanced floating floors and vertical support structures; The inertia-enhanced floating floor includes a precast slab, a number of inertia vibration damping components and a number of seismic isolation bearings. One end of the inertia vibration damping component is hinged to the lower surface of the precast slab, and the other end is hinged to the vertical support structure, which is used to horizontally connect the precast slab to the vertical support structure and is located inside the vertical support structure; The seismic isolation bearing is fixed under the precast slab to provide vertical support for the precast slab and reduce the horizontal vibration of the precast slab at the same time; The inertia-enhanced floating floor is arranged on a certain floor in the building structure or in a partial space of a certain floor in the building structure; The vertical support structure includes a number of frame columns and a number of frame beams; A number of frame beams are horizontally fixed between every two frame columns; One end of the inertia vibration damping component is hinged to the lower surface of the precast slab through a plate-type suspended inertia vibration damping system connecting piece, and the other end is hinged to the frame column of the vertical support structure through a beam-type suspended inertia vibration damping system connecting piece. The inertia vibration damping component is a suspended inertia vibration damping component; The inertia vibration damping component includes fixedly connected inertia element, damping element and elastic element; Specifically, it is any one group or multiple groups of the following characteristics: The structure of the inertia vibration damping component is that any two of the inertia element, damping element and elastic element are connected in parallel and then connected in series with the third element; The structure of the inertia vibration damping component is that the inertia element is connected in series with the elastic element and then connected in parallel with the damping element; The structure of the inertia vibration damping component is that the inertia element is connected in series with the damping element and then connected in parallel with the elastic element.

2. The inertial enhanced floating floor structure system according to claim 1, characterized in that, The number and height of the frame beams between every two frame columns are the same.

3. The inertial enhanced floating floor structure system according to claim 1, characterized in that, Corbels are installed on the inner side surface of the frame beam, and the upper surface of the corbel is fixedly connected to the lower end of the seismic isolation bearing through bolts.

4. The inertial enhanced floating floor structure system according to claim 1, characterized in that, The vertical support structure is a frame structure, shear wall, frame-core tube structure, tube-in-tube structure or bundled tube structure.

5. The inertial enhanced floating floor structure system according to claim 1, characterized in that, A fixed floor is installed under the seismic isolation bearing to support the floating floor.

6. The inertial enhanced floating floor structure system according to claim 1, characterized in that, The distance between the edge of the precast slab and the vertical support structure is greater than or equal to the design value of the safety distance, and the design value of the safety distance is calculated and determined according to the actual engineering structure conditions and load characteristics.

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