Damping structure of building floor mat

Abstract

The application relates to a damping structure of a building floor vibration reduction pad, which comprises a building floor, at least one structural floor layer, at least one vertical load-bearing component which is a column or a wall and is arranged on the building floor, and a damping pad layer which is arranged on a load transmission path of the building floor and comprises at least one first type of damping pad and at least one second type of damping pad, and the bearing capacity of the first type of damping pad is greater than that of the second type of damping pad. The building floor is divided into a core force transmission area corresponding to the vertical load-bearing component and a secondary force transmission area outside the core force transmission area in a plane. The first type of damping pad is arranged in the core force transmission area, and the second type of damping pad is arranged in the secondary force transmission area. The damping pad is used to isolate the upper structure from the floor, the structural stress bearing and the damping pad damping setting are combined, the balance between safety and economy is realized, and the problem of building damping design for environmental vibration is solved.

Description

Technical Field

[0001] This invention relates to the field of building structure engineering technology, and in particular to a vibration damping structure for a building foundation slab. Background Technology

[0002] With the acceleration of urbanization and the densification of public transportation networks, environmental vibrations and noise caused by rail transit and heavy vehicle operation have become a new type of urban pollution that cannot be ignored. This physical pollution, which spreads through the ground surface and building structures, not only disrupts the tranquility of the living environment but also poses a potential threat to public health, building safety, and specific building functions.

[0003] On the one hand, while Transit-Oriented Development (TOD) improves travel efficiency and makes intensive use of land, it also places a large number of residents and functional spaces directly above or along vibration sources. This transforms vibration disturbances from a "transitibility" issue into a "persistent" residential problem, significantly impacting people's quality of life and mental and physical health. On the other hand, such long-term, low-amplitude environmental vibrations have a particularly severe impact on historical and cultural heritage sites and buildings with sophisticated functional requirements. Ancient buildings and historical preservation buildings along rail transit lines are prone to cumulative damage under continuous vibration due to material aging and weak structural fatigue resistance, endangering structural safety. At the same time, buildings such as museums, theaters, concert halls, hospitals, and laboratories, which are extremely sensitive to vibration, may experience a decline in the working precision of their internal instruments, the purity of their acoustic environment, and even the accuracy of medical diagnoses due to vibration disturbances, directly affecting the realization of their core functions.

[0004] In addition to traffic vibrations, low-frequency noise and solid-borne vibrations generated by industrial production, construction, and municipal infrastructure operation can also be transmitted to buildings, causing resonance disturbances within the building and further complicating the problem. Therefore, the development and application of efficient and reliable building vibration reduction technologies can not only meet the requirements of national codes and standards related to building vibration, but also achieve the goals of protecting public health, improving the living environment, protecting historical buildings, and ensuring the normal use of special functional spaces, thus having significant social and economic benefits. Summary of the Invention

[0005] The purpose of this invention is to provide a vibration damping structure for building foundation slabs to overcome the shortcomings of the prior art.

[0006] To achieve the above objectives, the present invention provides a vibration damping structure for a building foundation slab, comprising:

[0007] Building foundation slab, including at least one structural slab layer, for transferring superstructure loads to the foundation;

[0008] At least one vertical load-bearing member, which is a column or wall, is disposed on the building's foundation slab; and,

[0009] A vibration damping pad layer is provided on the load transfer path of the building base plate. The vibration damping pad layer includes at least one first type vibration damping pad and at least one second type vibration damping pad, and the bearing capacity of the first type vibration damping pad is greater than that of the second type vibration damping pad.

[0010] The building base plate is divided on the plane into a core force transmission zone corresponding to the vertical load-bearing member and centered thereon, and a secondary force transmission zone other than the core force transmission zone; the first type of vibration damping pad is correspondingly disposed in the core force transmission zone, and the second type of vibration damping pad is correspondingly disposed in the secondary force transmission zone.

[0011] Optionally, the core force transmission zone covers the orthographic projection area of ​​the vertical load-bearing member on the building base plate and extends to its periphery.

[0012] Optionally, the building base plate includes an upper base plate and a lower base plate that are stacked on top of each other, and the vibration damping pad is sandwiched between the upper base plate and the lower base plate.

[0013] Optionally, the base plate vibration damping upper plate further includes a vibration damping upper plate column pier, the vibration damping upper plate column pier corresponds to the core force transmission area of ​​the base plate vibration damping upper plate, the vibration damping upper plate column pier is connected to the vertical bearing member, and the first type of vibration damping pad is disposed between the vibration damping upper plate column pier and the base plate vibration damping lower plate.

[0014] Optionally, the building base plate vibration damping pad vibration damping structure further includes a pile foundation, and the base plate vibration damping lower plate is disposed on the pile foundation.

[0015] Optionally, the building base slab is a single-layer concrete slab, and the vibration damping pad is laid entirely beneath the building base slab.

[0016] Optionally, the vibration damping structure of the building base plate also includes a pile foundation, wherein the first type of vibration damping pad covers the top surface of the pile foundation, and the vertical reinforcing bars in the pile foundation are anchored in the building base plate after passing through the holes opened on the first type of vibration damping pad.

[0017] Optionally, the top of the pile foundation is formed with a pile top enlarged head, and the first type of vibration damping pad is laid on the upper surface of the pile top enlarged head.

[0018] Optionally, a concrete protective layer may be laid on top of the vibration damping pad.

[0019] Optionally, the first type of vibration damping pad is a high load-bearing vibration damping pad, and the second type of vibration damping pad is a low load-bearing vibration damping pad.

[0020] The vibration damping structure of the building foundation slab provided by this invention has at least one of the following beneficial effects:

[0021] (1) This invention innovatively combines structural load-bearing capacity with vibration damping pads. By using high-load-bearing vibration damping pads in high-load-concentration areas, the structural safety of the force transmission path of columns and walls within the base plate area is ensured, fundamentally solving the problem of strength reduction that is a concern when applying vibration damping technology in load-bearing structures; while using ordinary low-load-bearing vibration damping pads in low-load areas, large-area effective vibration damping coverage can be achieved at an economical cost. This design achieves a balance between safety and economy, solving the problem of using vibration damping pads to isolate the upper structure on the building base plate and to design vibration damping for environmental vibration in load-bearing structures.

[0022] (2) The double base plate structure provided by the present invention has a vibration damping pad with a natural frequency much smaller than that of the concrete structure. The vibration damping pad is set between the upper vibration damping plate and the lower vibration damping plate of the base plate to completely disconnect the upper structure and the lower vibration damping plate of the base plate, thereby blocking the transmission path of environmental vibration from the foundation to the upper structure and achieving the purpose of vibration damping of the upper structure.

[0023] (3) The single-slab structure provided by this invention is consistent with the ordinary slab foundation form, with simple structure, convenient construction, and low cost. The vibration damping pad is directly laid on the foundation pad, and a single-layer structural slab is integrally cast on it. Furthermore, by anchoring the vertical reinforcement of the pile foundation through the holes of the vibration damping pad into the building slab, a reliable connection between the pile foundation and the slab is ensured. In addition, the design of the pile top enlarged head significantly increases the bearing area of ​​the pile top, reduces the uniformly distributed load transmitted from the superstructure to the pile top, and also reduces the compressive bearing capacity of the high-bearing-load vibration damping pad, reduces the cost of the vibration damping pad, and improves the vibration damping performance of the vibration damping pad. At the same time, a low-bearing-load vibration damping pad is used in the area outside the pile top. Attached Figure Description

[0024] Those skilled in the art will understand that the accompanying drawings are provided to better understand the invention and do not constitute any limitation on the scope of the invention. Wherein:

[0025] Figure 1 This is a top view of the double-base plate structure of the column base provided in Embodiment 1 of the present invention;

[0026] Figure 2 and Figure 3 They are respectively Figure 1 Vertical sectional views of two preferred embodiments along the AA direction;

[0027] Figure 4 This is a top view of the double-bottom plate structure at the bottom of the wall provided in Embodiment 1 of the present invention;

[0028] Figure 5 and Figure 6 They are respectively Figure 4 Vertical sectional views of two preferred embodiments along the AA direction;

[0029] Figure 7 This is a top view of the column base single-plate structure provided in Embodiment 2 of the present invention;

[0030] Figures 8-10 They are respectively Figure 7 Vertical sectional views of three preferred embodiments along the AA direction;

[0031] Figure 11 This is a top view of the single-base slab structure of the wall provided in Embodiment 2 of the present invention;

[0032] Figures 12-15 They are respectively Figure 11 Vertical sectional views of four preferred embodiments along the AA direction;

[0033] Figure 16 They are respectively Figure 9 and Figure 13 Cross section along the BB direction;

[0034] Figure 17 They are respectively Figure 10 and Figure 14 Cross-sectional view along the CC direction;

[0035] Figure 18 They are respectively Figure 16 Cross-sectional view along the DD direction.

[0036] The attached figures are labeled as follows:

[0037] 100 - Building base slab; 110 - Vibration-damping upper slab of base slab; 111 - Vibration-damping upper slab column pier; 120 - Vibration-damping lower slab of base slab; 130 - Single base slab column pier; 200 - Column; Wall - 300; 410 - Type I vibration damping pad; 420 - Type II vibration damping pad; 510 - Core force transmission zone; 520 - Secondary force transmission zone; 600 - Pile foundation; 610 - Vertical reinforcement; 620 - Pile top enlarged head; 700 - Concrete protective layer; 800 - Plain concrete cushion layer; 900 - Circular formwork. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0039] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0040] In the description of this invention, it should be understood that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used to facilitate the description of this invention and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0041] Furthermore, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such an article or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the article or apparatus that includes said element. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0042] Please refer to Figures 1-16 This invention provides a vibration damping structure for a building foundation slab, comprising:

[0043] Building foundation 100 includes at least one structural slab layer for transferring the superstructure load to the foundation;

[0044] At least one vertical load-bearing member, which is a column 200 or a wall 300, is disposed on the building base slab 100; and,

[0045] The vibration damping pad is installed on the load transfer path of the building base slab 100. The vibration damping pad includes at least one first type vibration damping pad 410 and at least one second type vibration damping pad 420, and the bearing capacity of the first type vibration damping pad 410 is greater than that of the second type vibration damping pad 420.

[0046] The building base slab 100 is divided in plan into a core force transmission zone 510 corresponding to the vertical load-bearing member and centered thereon, and a secondary force transmission zone 520 other than the core force transmission zone 510; a first type of vibration damping pad 410 is correspondingly set in the core force transmission zone 510, and a second type of vibration damping pad 420 is correspondingly set in the secondary force transmission zone 520.

[0047] The design principle of this building foundation slab vibration damping pad structure is as follows: First, based on the column grid and wall layout of the superstructure, a core load-bearing zone 510 is identified within the plane of the building foundation slab 100, centered on each column 200 and wall 300. This area is the main path for the concentrated downward transmission of vertical loads, typically covering the cross-sectional projection of the column 200 and wall 300 and extending outwards to a certain extent; its specific dimensions (size and height) can be determined based on structural calculations. All areas on the foundation slab plane other than the core load-bearing zone 510 are defined as secondary load-bearing zones 520. Subsequently, a first-type vibration damping pad 410 with high load-bearing capacity (i.e., high-load-bearing vibration damping pad) is specifically selected for the core load-bearing zone 510, and a second-type vibration damping pad 420 with low load-bearing capacity (i.e., low-load-bearing vibration damping pad) is selected for the secondary load-bearing zone 520. All vibration damping pad layers together constitute a complete vibration damping pad layer, laid in the load transmission path of the building foundation slab 100.

[0048] This invention innovatively combines structural load-bearing capacity with vibration damping pads. By configuring high-load-bearing vibration damping pads in the high-load core load-bearing zone 510, the strength requirements of the core load-bearing zone are met, and environmental vibration isolation in this area is achieved. Conversely, configuring low-load-bearing vibration damping pads in the low-load secondary load-bearing zone 520 achieves large-area vibration damping coverage at a more economical cost. This design achieves a balance between safety and economy, solving the challenge of using vibration damping pads in load-bearing structures to isolate the upper structure from environmental vibrations.

[0049] Preferably, the core force transmission zone 510 covers the orthographic projection area of ​​the vertical load-bearing member on the building base slab 100 and extends to its periphery, so that the core force transmission zone 510 is not only equal to the cross section of the column 200 and wall 300, but also includes the area of ​​load diffusion. This is in line with the actual situation of structural stress and ensures the scientific and reasonableness of the arrangement range of high load-bearing vibration damping pads.

[0050] In this embodiment, regarding the specific selection of the vibration damping pads, the first type of vibration damping pad 410 is preferably a high-load-bearing vibration damping pad, and the second type of vibration damping pad 420 is preferably a low-load-bearing vibration damping pad. The high-load-bearing vibration damping pad has a higher load-bearing capacity, which can meet the compressive strength requirements of the core force transmission area. The low-load-bearing vibration damping pad has a lower load-bearing capacity, but can meet the compressive strength requirements of the secondary force transmission area. At the same time, both can meet the vibration isolation design requirements.

[0051] This invention provides two main implementation methods for the base plate structure to adapt to different engineering requirements.

[0052] Example 1: Double-bottom plate structure

[0053] Please refer to Figures 1-6 This embodiment employs a double-base slab structure. The building base slab 100 includes an upper vibration-damping slab 110 and a lower vibration-damping slab 120 stacked vertically, with a vibration-damping pad sandwiched between the upper and lower vibration-damping slabs 110 and 120. The load transfer path of the superstructure is: upper vibration-damping slab 110 > vibration-damping pad > lower vibration-damping slab 120 > foundation. The beneficial effects of this structure are: the natural frequency of the vibration-damping pad is much lower than that of the concrete structure; the vibration-damping pad completely separates the superstructure from the foundation through the upper and lower vibration-damping slabs 110 and 120, blocking the transmission path of environmental vibration from the foundation to the superstructure, thus achieving the purpose of vibration reduction for the superstructure.

[0054] In a preferred embodiment of the double-base plate structure, the upper damping plate 110 of the base plate further includes a damping upper plate column pier 111, which corresponds to the core force transmission area of ​​the upper damping plate 110. The damping upper plate column pier 111 is aligned and connected to the upper column 200 or wall 300, and the first type of damping pad 410 is disposed between the damping upper plate column pier 111 and the lower damping plate 120 of the base plate. The beneficial effects of this design are: the damping upper plate column pier 111 bears the load of the column 200 or wall 300, while significantly increasing the contact area between the column base and the damping pad, reducing the uniformly distributed load, reducing the compressive bearing capacity of the high-load-bearing damping pad, reducing the cost of the high-load-bearing damping pad, and improving the damping performance of the damping pad. The dimensions of the damping upper plate column pier 111 can be accurately calculated and determined according to the load of the column 200, realizing refined design.

[0055] In another preferred embodiment of the double-base slab construction, the double-base slab construction can be combined with a pile foundation. For example... Figure 3 and Figure 6 As shown, the vibration damping structure of the building's foundation slab also includes a pile foundation 600, with the lower vibration damping plate 120 mounted on the pile foundation 600. The pile foundation 600 primarily provides higher vertical bearing capacity and better reduces the settlement of the superstructure.

[0056] Furthermore, the vertical reinforcing bars 610 inside the pile foundation 600 extend upwards at the pile top and are directly anchored into the concrete of the bottom vibration-damping slab 120. The anchorage of the vertical reinforcing bars 610 ensures a reliable connection between the pile foundation and the bottom vibration-damping slab, guaranteeing their coordinated operation. During construction, the vertical reinforcing bars 610 extending beyond the pile top must be pre-installed during the pile foundation construction phase, extending into the vibration-damping slab area. After pouring the concrete of the bottom vibration-damping slab 120, a reliable anchorage node is formed between the pile foundation and the bottom vibration-damping slab.

[0057] During construction, to ensure the construction quality and flatness of the foundation slab vibration damping lower plate 120, a plain concrete pad 800 is typically installed at its bottom. First, the foundation soil is compacted and leveled, followed by the pouring of a plain concrete pad 800. This pad primarily serves to level, isolate the foundation soil from the foundation slab reinforcement, protect the foundation soil, facilitate the positioning of the defense line, and provide moisture and water protection. After the plain concrete pad 800 reaches a certain strength, the reinforcement of the foundation slab vibration damping lower plate 120 is tied and concrete is poured. After the foundation slab vibration damping lower plate 120 hardens, the vibration damping pad is laid. Precise positioning is required during laying. Directly below each column 200 and wall 300, the core load-bearing zone 510 is identified, and a pre-customized high-load-bearing vibration damping pad is laid there. In the secondary load-bearing zones 520, standard low-load-bearing vibration damping pads are laid. To ensure that the vibration damping pad does not shift or get damaged during the construction of the vibration damping upper plate, and to provide a flat working surface for the construction of the bottom plate vibration damping upper plate 110, a concrete protective layer 700 must be poured integrally on the vibration damping pad layer.

[0058] Next, the reinforcing bars of the base slab vibration-damping upper slab 110 are tied. Vibration-damping upper slab column piers 111 need to be installed at corresponding positions on columns 200 and walls 300. The dimensions (size and height) of these vibration-damping upper slab column piers 111 need to be determined through calculation to meet the strength requirements under the load at the bottom of column 200. When tying the reinforcing bars of the vibration-damping upper slab column piers 111, it is necessary to ensure coordination with the vertical reinforcing bars of the upper columns 200 and walls 300. Finally, the concrete of the base slab vibration-damping upper slab 110 is poured integrally. This ultimately forms a composite vibration isolation system consisting of the base slab vibration-damping upper slab 110, the vibration-damping pad layer, and the base slab vibration-damping lower slab 120. In this system, the load of the superstructure is transferred through columns 200 and walls 300 to the vibration-damping upper slab column piers 111, then through the high-bearing capacity vibration-damping pad under the vibration-damping upper slab column piers 111 to the base slab vibration-damping lower slab 120, and finally to the foundation. Environmental vibrations are significantly attenuated when passing through the vibration-damping pad layer.

[0059] Example 2: Single-base plate construction

[0060] like Figures 7-18 As shown, the building base slab 100 is a single-layer concrete slab structure, with the vibration-damping pad layer laid integrally beneath it. The advantages of this structure are: it eliminates the need for a double-slab vibration-damping structure on the base slab, resulting in a simpler structure, easier construction, and lower cost. The vibration-damping pad layer is laid directly on the compacted foundation pad layer, upon which a single-layer structural base slab is integrally cast.

[0061] In a preferred embodiment of the single-slab construction, the single-slab construction is used in conjunction with a pile foundation 600. For example... Figure 9 and Figure 13As shown, the vibration damping structure of the building foundation slab also includes a pile foundation 600. The first type of vibration damping pad 410 covers the top surface of the pile foundation 600, and the vertical reinforcing bars 610 inside the pile foundation 600 are anchored inside the building foundation slab 100 after passing through the holes opened in the first type of vibration damping pad 410, thereby achieving a reliable connection between the pile foundation and the foundation slab. The vibration damping pad blocks the transmission path of environmental vibration from the piles to the foundation slab and the superstructure, achieving the purpose of vibration reduction of the superstructure.

[0062] In a preferred embodiment of the single-base slab construction, the building base slab 100 further includes a single-base slab column pier 130, which corresponds to the core force transmission area of ​​the building base slab 100 and is aligned and connected to the upper column 200 or wall 300.

[0063] Furthermore, such as Figure 10 and Figure 14 As shown, the top of the pile foundation 600 has an enlarged head 620. A type 1 vibration damping pad 410 is laid on the upper surface of the enlarged head 620. This design significantly increases the bearing area at the pile top, reduces the uniformly distributed load transmitted from the superstructure to the pile top, reduces the compressive bearing capacity of the high-bearing-capacity vibration damping pad, reduces the cost of the vibration damping pad, and improves its vibration damping performance. This is particularly suitable for situations where the column 200 has a large load and the single pile bearing capacity is high.

[0064] During construction, the pile foundation 600 is constructed first, and an enlarged head 620 is made at the top of the pile to reduce the compressive stress at the pile top. The vertical reinforcing bars 610 of the pile body extend into the enlarged head 620. A specially made high-bearing-load vibration-damping pad is laid on the top surface of the enlarged head 620. The holes for passing through the reinforcing bars in this vibration-damping pad need to be precisely reserved according to the position of the main reinforcing bars of the pile. At the same time, ordinary low-bearing-load vibration-damping pads are laid on the foundation between the piles. All the vibration-damping pads together form a continuous vibration-damping layer.

[0065] Next, the steel mesh for the single-story building's foundation slab is tied. The main reinforcement bars of the piles are then passed upwards through the pre-drilled holes in the vibration damping pads and extended into the foundation slab. Finally, the foundation slab concrete is poured. After the concrete hardens, the foundation slab and pile foundation are reliably connected through the steel bars passing through the vibration damping pads, which effectively isolate the transmission path of environmental vibrations from the piles to the foundation slab and the superstructure, thus playing a role in vibration damping of the superstructure.

[0066] In addition to the aforementioned use of prefabricated vibration damping pads, the vibration damping pads of this invention can also be formed by on-site pouring and curing of high-load-bearing fluid or semi-fluid materials. This method solves the difficulties of aligning the vibration damping pads with the openings of the on-site reinforcing bars and straightening all the reinforcing bars on-site to pass through the vibration damping pads simultaneously. It reduces the impact of construction errors of the pile top reinforcing bars on the installation of the vibration damping pads, and is particularly suitable for projects with a large number of pile top reinforcing bars, large construction errors, and high requirements for the integrity and seamless connection of the vibration damping pads. Figure 15 and Figure 18 As shown, the specific construction method is as follows:

[0067] (1) On-site formwork: First, set up a ring formwork 900 on the low-bearing vibration damping pad around the completed pile. The height of the formwork is determined according to the height of the pile top entering the bottom plate and the thickness of the vibration damping pad as required by the design, and ensure sealing to prevent leakage of fluid or semi-fluid materials.

[0068] (2) Preparation and pouring: Pour the high load-bearing damping pad fluid or semi-fluid material into the already erected ring template 900.

[0069] (3) Elevation and leveling control: During the pouring process, tools such as scrapers are used to strictly control the elevation of the material surface after leveling, ensuring that it is consistent with the design thickness of the vibration damping pad, and the surface leveling treatment is completed before the material initially sets.

[0070] (4) Curing: Under suitable environmental conditions, the fluid or semi-fluid material is allowed to cure naturally or accelerated curing measures are taken to ultimately form a vibration damping pad with good integrity and no joints. After it is fully cured and reaches the design strength, the subsequent concrete protective layer construction and the pouring of the upper base slab can be carried out.

[0071] The on-site formed vibration damping pad is a continuous whole, which completely avoids the gaps that may exist when splicing precast blocks, resulting in better vibration damping effect. At the same time, it can easily adapt to the situation where multiple steel bars pass through the vibration damping pad and are anchored into the base plate at the same time, making it more adaptable to construction.

[0072] Preferably, in order to protect the vibration damping pad from displacement and damage (such as rebar puncture, human trampling, etc.) during the construction of the base plate, and to provide a flat construction working surface, a concrete protective layer of 700 mm must be laid on top of the vibration damping pad.

[0073] In summary, this invention provides a vibration damping structure for building foundation slabs, innovatively incorporating vibration damping pads within the foundation area to mitigate environmental vibrations, thus forming a feasible vibration damping design method for large buildings. By configuring high-load-bearing vibration damping pads in the high-load core force transmission zone 510, both the strength requirements of the vibration damping pads are met, and vibration isolation in this area is achieved. Conversely, configuring low-load-bearing vibration damping pads in the low-load secondary force transmission zone 520 achieves large-area vibration damping coverage at a more economical cost. This design achieves a balance between safety and economy, solving the challenge of using vibration damping pads in load-bearing structures to isolate the upper structure from environmental vibrations.

[0074] The above description is merely a description of preferred embodiments of the present invention and is not intended to limit the scope of the invention in any way. Any changes or modifications made by those skilled in the art based on the above disclosure are within the protection scope of the present invention. Obviously, those skilled in the art can make various modifications and variations to the present invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the present invention and its equivalents, the present invention also intends to include these modifications and variations.

Claims

1. A vibration damping structure for a building foundation slab, characterized in that, include: Building foundation slab, including at least one structural slab layer, for transferring superstructure loads to the foundation; At least one vertical load-bearing member, which is a column or wall, is disposed on the building's foundation slab; and, A vibration damping pad layer is provided on the load transfer path of the building base plate. The vibration damping pad layer includes at least one first type vibration damping pad and at least one second type vibration damping pad, and the bearing capacity of the first type vibration damping pad is greater than that of the second type vibration damping pad. The building base plate is divided in plan into a core force transmission zone corresponding to and centered on the vertical load-bearing member, and secondary force transmission zones other than the core force transmission zone. The first type of vibration damping pad is correspondingly disposed in the core force transmission area, and the second type of vibration damping pad is correspondingly disposed in the secondary force transmission area.

2. The vibration damping structure of the building foundation slab vibration damping pad according to claim 1, characterized in that, The core force transmission zone covers the orthographic projection area of ​​the vertical load-bearing component on the building's base plate and extends to its periphery.

3. The vibration damping structure of the building foundation slab vibration damping pad according to claim 1, characterized in that, The building base plate includes an upper base plate and a lower base plate that are stacked on top of each other, and the vibration damping pad is sandwiched between the upper base plate and the lower base plate.

4. The vibration damping structure of the building foundation slab vibration damping pad according to claim 3, characterized in that, The base plate vibration damping upper plate also includes a vibration damping upper plate column pier, which corresponds to the core force transmission area of ​​the base plate vibration damping upper plate. The vibration damping upper plate column pier is connected to the vertical bearing member, and the first type of vibration damping pad is disposed between the vibration damping upper plate column pier and the base plate vibration damping lower plate.

5. The vibration damping structure of the building foundation slab vibration damping pad according to claim 3, characterized in that, The vibration damping structure of the building base plate also includes a pile foundation, and the lower vibration damping plate of the base plate is set on the pile foundation.

6. The vibration damping structure of the building foundation slab vibration damping pad according to claim 1, characterized in that, The building base slab is a single-layer concrete slab, and the vibration damping pad is laid entirely beneath the building base slab.

7. The vibration damping structure of the building foundation slab vibration damping pad according to claim 6, characterized in that, The vibration damping structure of the building base plate also includes a pile foundation. The first type of vibration damping pad covers the top surface of the pile foundation, and the vertical steel bars in the pile foundation are anchored in the building base plate after passing through the holes opened on the first type of vibration damping pad.

8. The vibration damping structure of the building foundation slab vibration damping pad according to claim 7, characterized in that, The pile foundation has an enlarged head at the top, and the first type of vibration damping pad is laid on the upper surface of the enlarged head.

9. The vibration damping structure of the building foundation slab vibration damping pad according to claim 1, characterized in that, A concrete protective layer is also laid on top of the vibration damping pad.

10. The vibration damping structure of the building foundation slab vibration damping pad according to claim 1, characterized in that, The first type of vibration damping pad is a high load-bearing vibration damping pad, and the second type of vibration damping pad is a low load-bearing vibration damping pad.

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