Anti-floating vibration isolation structure and building

Abstract

The present invention relates to the field of building structure technology, and in particular to an anti-floating vibration isolation structure and a building. The anti-floating vibration isolation structure of the present invention includes an anti-pullout anchor rod and an isolation sleeve. The anti-pullout anchor rod is inserted into the ground layer from the foundation layer. The isolation sleeve is located in the foundation layer and is sleeved outside the anti-pullout anchor rod so that the anti-pullout anchor rod and the foundation layer are not in direct contact. The interior of the isolation sleeve is provided with a space for providing vibration reduction for the anti-pullout anchor rod, so that the anti-pullout anchor rod and the foundation layer are completely isolated, and the isolation sleeve and the anti-pullout anchor rod are used to form a piston-type semi-floating system for the entire building foundation, thereby solving the defect in the prior art that when a building is designed for anti-floating, it is easy to appear that the target building is difficult to suspend after adopting anti-floating piles (i.e., the anti-pullout anchor rod described in the present invention). The structure of the present invention can achieve a higher vibration reduction efficiency for the entire building foundation layer, thereby improving the vibration suppression stability of the building foundation.

Description

Technical Field

[0001] The present invention relates to the technical field of building structures, and in particular to an anti-floating vibration isolation structure and a building. Background Art

[0002] Rail transit is the main artery of urban development, significantly improving travel efficiency and overall urban carrying capacity while also stimulating urban economic and social vitality. Therefore, the development of urban rail transit networks is of great significance. As urban rail transit operating mileage continues to grow exponentially and the network continues to intensify and expand, rail transit lines inevitably overlap with existing or newly constructed residential areas, hospitals, schools, research institutes, concert halls, and other vibration-sensitive buildings, sometimes even passing under sensitive structures. Currently, rail transit lines are primarily subway-based. For example, Beijing's total operating mileage of 685 kilometers includes 589 kilometers of subway lines. Vibration generated by wheel-rail interaction propagates through tunnel structures and rock-soil media to building foundations, reducing indoor comfort and causing failures in vibration-sensitive equipment. Secondary radiated noise from floor and wall vibrations further exacerbates the effects of vibration pollution.

[0003] In order to reduce the vibration impact of subway operation on buildings, the feasible treatment methods mainly include: track and roadbed vibration source control, transmission medium barrier vibration isolation and building base vibration treatment. However, the groundwater level in some projects is shallow, or the box foundation and raft foundation are buried deep, and the bottom surface of the foundation is often below the groundwater level. In addition, since the number of floors of the building structure is not high, the unit area structure weight is small, and anti-floating design needs to be considered. The commonly used anti-floating design is pull-out piles (or pull-out anchors). The vertical setting of the pull-out piles is bound to expand the original two-dimensional plane box foundation raft base surface in the three-dimensional direction, making it difficult to suspend the target building. Therefore, when existing buildings are designed for anti-floating, it is easy to encounter the technical problem that the target building is difficult to suspend after the use of anti-floating piles. Summary of the Invention

[0004] (1) Technical issues to be solved

[0005] In response to the above technical problems, an embodiment of the present invention provides an anti-floating vibration isolation structure and building, which is used to solve the defect in the prior art that when buildings are designed for anti-floating, it is difficult to suspend the target building after using anti-floating piles, so that the overall building foundation can achieve a higher vibration reduction efficiency, thereby improving the vibration suppression stability of the building foundation.

[0006] (2) Technical solution

[0007] In order to solve the above technical problems, the present invention provides an anti-floating and vibration isolation structure, including a pull-out anchor rod and a vibration isolation sleeve. The pull-out anchor rod is inserted into the foundation layer from the foundation layer, and the vibration isolation sleeve is located in the foundation layer and is sleeved outside the pull-out anchor rod so that there is no direct contact between the pull-out anchor rod and the foundation layer. The interior of the vibration isolation sleeve is provided with a space for providing vibration reduction for the pull-out anchor rod.

[0008] In some embodiments, the space is filled with an elastic vibration isolation pad layer, and the vibration isolation pad layer is wrapped around the anti-pullout anchor rod.

[0009] In some embodiments, the anti-pullout anchor rod includes a rod body and an anti-pullout end plate, one end of the rod body is inserted in the base layer, and the other end is fixedly connected to the anti-pullout end plate, and a portion of the rod body is inserted in the foundation layer, and the portion of the rod body located in the foundation layer and the outside of the anti-pullout end plate are both covered with the vibration isolation sleeve.

[0010] In some embodiments, the vibration isolation sleeve includes a first vibration isolation part and a second vibration isolation part, and the interior of the first vibration isolation part and the interior of the second vibration isolation part are respectively provided with a space for filling the vibration isolation pad layer. The first vibration isolation part is sleeved on the outside of the anti-pullout end plate, and the second vibration isolation part is sleeved on the outside of the part of the rod body located in the foundation layer. One end of the second vibration isolation part is connected to the first vibration isolation part, and the other end of the second vibration isolation part is connected to the foundation layer.

[0011] In some embodiments, the anti-pullout end plate includes a connecting portion and a boss, both of which are clamped in the first vibration isolation portion, the connecting portion is connected to the end of the rod body, the boss is connected to the outer edge of the connecting portion, and the boss extends outward from the outer wall of the rod.

[0012] In some embodiments, the vibration isolation sleeve further includes a sealing plate, the top of the first vibration isolation portion is open, and the sealing plate is enclosed in the opening.

[0013] In some embodiments, an elastic vibration-damping pad is installed between the base layer and the ground layer.

[0014] In some embodiments, the anti-pullout anchor rod vertically passes through the bottom plate of the foundation layer from the foundation layer and is inserted into the base layer; or the anti-pullout anchor rod obliquely passes through the side wall of the foundation layer from the foundation layer and is inserted into the base layer.

[0015] In some embodiments, a sunken section is provided on the foundation layer, the sunken section is inserted into the ground layer, and the vibration isolation sleeve and the anti-pullout anchor rod are both located in the sunken section.

[0016] The present invention also provides a building, characterized in that it includes the anti-floating vibration isolation structure as described above.

[0017] (3) Beneficial effects

[0018] The above technical solution of the present invention has the following beneficial effects: the anti-floating and vibration isolation structure of the present invention includes an anti-pullout anchor rod and a vibration isolation sleeve, the anti-pullout anchor rod is inserted into the ground layer from the foundation layer, the vibration isolation sleeve is located in the foundation layer and is sleeved outside the anti-pullout anchor rod, so that the anti-pullout anchor rod and the foundation layer are not in direct contact, and the interior of the vibration isolation sleeve is provided with a space for providing vibration reduction for the anti-pullout anchor rod, so that the anti-pullout anchor rod and the foundation layer are completely isolated, so that the vibration isolation sleeve and the anti-pullout anchor rod are used to form a piston-type overall semi-floating system of the building foundation, thereby solving the defect in the prior art that the target building is difficult to suspend after adopting anti-floating piles (i.e., the anti-pullout anchor rod described in the present invention) when the building is designed for anti-floating. The structure of the present invention is particularly suitable for the application of the elastic vibration-damping pad building foundation floating method to treat projects with a maximum burial depth below the groundwater level in isolating the vertical vibration influence of rail transit, which can enable the building foundation layer as a whole to achieve a higher vibration reduction efficiency, thereby improving the vibration suppression stability of the building foundation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 Schematic diagram of the structure of the anti-floating vibration isolation structure according to an embodiment of the present invention (I);

[0021] Figure 2 Schematic diagram of the structure of the anti-floating vibration isolation structure according to an embodiment of the present invention (II);

[0022] Figure 3 Schematic diagram of the structure of the anti-floating vibration isolation structure according to an embodiment of the present invention (3);

[0023] Figure 4 A schematic structural diagram of an anti-pullout anchor rod according to an embodiment of the present invention;

[0024] Figure 5 2 is a cross-sectional view of a vibration isolation sleeve according to an embodiment of the present invention.

[0025] in,

[0026] 1. Ground base; 2. Foundation layer; 3. Vibration damping pad;

[0027] 4. Pull-out end plate; 41. Boss

[0028] 5. Rod body;

[0029] 6. Vibration isolation sleeve; 61. Closing plate; 62. First vibration isolation part; 63. Second vibration isolation part;

[0030] 7. Vibration isolation cushion layer. DETAILED DESCRIPTION

[0031] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0032] In the description of the present invention, unless otherwise specified, "plurality" means two or more. Terms such as "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "head," and "tail" indicate positions or relationships based on those shown in the accompanying drawings. These terms are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, terms such as "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] Example 1

[0034] This embodiment provides an anti-floating vibration isolation structure, which is particularly suitable for use in isolating the vertical vibration influence of rail transit in projects with a maximum burial depth below the groundwater level using a building foundation floating method using an elastic vibration-damping pad 3 .

[0035] Specifically, such as Figure 1 As shown, the anti-floating vibration isolation structure includes an anti-pullout anchor rod and an isolation sleeve 6. The anti-pullout anchor rod is inserted into the base layer 1 from the foundation layer 2. The anti-pullout anchor rod can penetrate deep into the base layer 1 and provide reliable anti-pullout force for the foundation layer 2, thereby reliably fixing the foundation layer 2 in the base layer 1. The isolation sleeve 6 is located in the foundation layer 2 and is sleeved outside the anti-pullout anchor rod, so that the anti-pullout anchor rod and the foundation layer 2 are not in direct contact, thereby reducing the vibration impact on the foundation layer 2. The isolation sleeve 6 is preferably an embedded steel sleeve cap cast in situ and embedded in the foundation slab concrete. The interior of the isolation sleeve 6 is provided with a space for providing vibration reduction for the anti-pullout anchor rod, so that the anti-pullout anchor rod and the foundation layer 2 are completely isolated, so as to utilize the isolation sleeve 6 and the anti-pullout anchor rod to form a piston-type building foundation overall semi-floating system.

[0036] In this embodiment, a rock-soil medium layer is used as the ground layer 1, and a box foundation is used as the foundation layer 2 of the building. The box foundation is placed in the rock-soil medium layer, and the bottom of the box foundation is located above the rock-soil medium layer. The anti-pull anchor rods are vertically inserted into the rock-soil medium layer from the bottom plate of the box foundation, thereby firmly fixing the bottom of the box foundation to the rock-soil medium layer. Due to the high groundwater level where the building structure is located, the box-type foundation building structure may be partially buried in the groundwater level, and its anti-buoyancy ability may be insufficient. It may be unstable or even destroyed under the action of large buoyancy. It is necessary to arrange anti-buoyancy facilities - anti-pull anchor rods at the bottom. In this way, the anti-pull anchor rods are inserted into the rock-soil layer to provide vertical downward anti-pull force, which is conducive to promoting the stability of the structure. In this embodiment, the above-mentioned semi-floating system is set at the bottom of the box foundation, so that the box foundation is suspended by using this semi-floating system to solve the defect in the prior art that when anti-floating piles (i.e., the anti-pull anchor rods) are used for anti-floating design of buildings, which is difficult to suspend after using them. The semi-floating system can enable the building foundation layer 2 to achieve a higher vibration reduction efficiency as a whole, thereby improving the vibration suppression stability of the building foundation.

[0037] It is understood that the foundation layer 2 in this embodiment is cast from concrete, and can also be replaced by a steel structure foundation layer 2. The base layer 1 in this embodiment is a rock and soil layer, and can also be replaced by a base layer 1 of other common soil types. The choice of base layer 1 needs to be determined according to the actual construction situation.

[0038] In this embodiment, a vibration-damping method for the building base is employed. An elastic vibration-damping pad 3 is installed between the foundation layer 2 and the subgrade 1. When the isolation sleeve and anti-pullout anchor rods of the anti-floating vibration isolation structure are inserted into the subgrade 1, the vibration-damping pad 3 separates the anti-floating vibration isolation structure from the subgrade 1, thereby forming the aforementioned semi-floating system and achieving the vibration reduction effect. The elastic vibration-damping pad 3 is preferably a high-damping elastic vibration-damping pad 3. The purpose of providing the elastic vibration-damping pad 3 is to mitigate the vibration impact of subway operation on the building.

[0039] Building base vibration treatment draws on the concept of building base isolation in earthquake engineering. By laying a high-damping elastic vibration-damping pad 3 at the bottom of a large flat raft or box foundation, the overall vibration frequency of the treated target building is shifted away from the input vibration frequency, thereby reducing the dynamic response of the building structure. The damping effect of the vibration-damping pad 3 also dissipates some of the input energy, comprehensively reducing the vibration of the target building. The specific concept of this method is to insert a layer of artificial vibration-damping pad 3 between the rock medium and the building structure, thereby suspending the target building and achieving a vibration-damping effect.

[0040] In this embodiment, an elastic vibration isolation pad layer 7 is filled in the internal space of the vibration isolation sleeve 6, and the vibration isolation pad layer 7 is wrapped around the anti-pull-out anchor rod to form a flexible (elastic) connection between the vibration isolation sleeve 6 and the anti-pull-out anchor rod. This connection structure can utilize the elastic vibration isolation pad layer 7 to achieve both an anti-pull-out effect and an elastic buffering effect between the vibration isolation sleeve 6 and the anti-pull-out anchor rod, thereby further reducing and absorbing the vibration received by the building foundation layer 2.

[0041] It is understandable that the vibration isolation cushion layer 7 in the vibration isolation sleeve 6 can be as follows Figure 1 As shown, the part of the pull-out anchor rod 5 located in the foundation layer 2 and the outside of the pull-out end plate 4 are all tightly wrapped, or only the outside of the pull-out end plate 4 can be wrapped, that is, the pull-out anchor rod and the vibration isolation sleeve 6 are ensured to be semi-floating.

[0042] In this embodiment, Figure 4 As shown, the pull-out anchor includes a rod body 5 and a pull-out end plate 4. One end of the rod body 5 is inserted into the base layer 1, and the other end is fixedly connected to the pull-out end plate 4. The pull-out end plate 4 is provided to prevent the rod body 5 of the pull-out anchor from slipping out of the vibration isolation sleeve 6. In order to ensure reliable fixation between the foundation layer 2 and the base layer 1, when the rod body 5 is inserted into the base layer 1, a part of the rod body 5 remains in the base layer 2. In order to provide a good vibration isolation effect for the pull-out anchor, the part of the rod body 5 located in the base layer 2 and the outside of the pull-out end plate 4 are simultaneously covered with a vibration isolation sleeve 6 to isolate the pull-out end plate 4 from the base layer 2, and there will be no direct contact between the part of the rod body 5 inserted in the base layer 2 and the base layer 2.

[0043] It is understandable that the pull-out anchor rod of the present embodiment can adopt steel anchor rod, also can adopt reinforced concrete anchor rod.If adopt the pull-out anchor rod made of reinforced concrete, need pre-embed connector in the top of the rod body 5 of the pull-out anchor rod, to facilitate the later installation of the pull-out end plate 4.

[0044] like Figure 5 As shown, the vibration isolation sleeve 6 includes a first vibration isolation part 62 and a second vibration isolation part 63. The interior of the first vibration isolation part 62 and the interior of the second vibration isolation part 63 are respectively provided with a space for filling the vibration isolation cushion layer 7. The first vibration isolation part 62 is sleeved on the outside of the anti-pullout end plate 4, and the second vibration isolation part 63 is sleeved on the outside of the part of the rod body 5 located in the foundation layer 2. One end of the second vibration isolation part 63 is connected to the first vibration isolation part 62, and the other end of the second vibration isolation part 63 is connected to the foundation layer 1. In order to facilitate the assembly of the vibration isolation sleeve 6 and the anti-pullout anchor rod, the vibration isolation sleeve 6 also includes a sealing plate 61. The top of the first vibration isolation part 62 is open, the sealing plate 61 is encapsulated in the opening, and the second vibration isolation part 63 is connected to the bottom of the first vibration isolation part 62. Preferably, the sealing plate 61 and the first vibration isolation part 62 are fixed by welding, and can also be fixed by bolts.

[0045] Preferably, the anti-pullout end plate 4 includes a connecting portion and a boss 41, both of which are mounted within the first vibration isolation portion 62. The connecting portion is connected to the end of the rod body 5, and the boss 41 is connected to the outer edge of the connecting portion. The boss 41 extends outward from the outer wall of the rod body 5 to facilitate the insertion and removal of the anti-pullout anchor rod, and also facilitates the reliable fixation between the anti-pullout anchor rod and the foundation layer 2. Preferably, the anti-pullout end plate 4 and the top end of the rod body 5 can be fixed by welding or by bolts.

[0046] It is understandable that in the anti-pullout anchor rod of this embodiment, the boss 41 connected to the anti-pullout end plate 4 is square in shape, but may also be circular, elliptical or polygonal in shape, depending on actual needs during construction.

[0047] Since the shape of the first vibration isolation portion 62 is adapted to the shape of the boss 41, in order to prevent the pull-out end plate 4 from falling out of the vibration isolation sleeve 6 and to ensure that the pull-out anchor rod will not be pulled out of the vibration isolation sleeve 6, it is preferred that when the cross-sections of the boss 41 and the first vibration isolation portion 62 are both circular, the outer diameter of the boss 41 is not less than the inner diameter of the first vibration isolation portion 62; and when the cross-sections of the boss 41 and the first vibration isolation portion 62 are both square, the outer width of the boss 41 is not less than the width of the inner space of the first vibration isolation portion 62. Similarly, regardless of the cross-sectional shapes of the boss 41 and the first vibration isolation portion 62, in order to ensure that the pull-out anchor rod can be fixed inside the vibration isolation sleeve 6, does not shake violently inside the vibration isolation sleeve 6, and is not easily pulled out of the vibration isolation sleeve 6, it is preferred that the outer dimensions of the boss 41 are not less than the inner dimensions of the first vibration isolation portion 62.

[0048] Correspondingly, in the vibration isolation sleeve 6 of this embodiment, the cross-sectional shape of the first vibration isolation portion 62 is also matched to be set to a square, and can also be set to a circular, elliptical or polygonal structure according to the cross-sectional shape of the first vibration isolation portion.

[0049] Regarding the anti-floating vibration isolation structure of this embodiment, this embodiment also provides a specific construction process of the structure. The specific construction process can be divided into the following steps:

[0050] (1) Driving an anti-pullout anchor rod into the rock and soil mass serving as the foundation 1 (without installing the anti-pullout end plate 4 at the top of the rod body 5);

[0051] (2) Compact and lay plain concrete around the rod body 5 of the pull-out anchor to level the surface of the cushion layer, lay a vibration-damping cushion layer 3 on the surface of the plain concrete cushion layer, and lay a PE (polyethylene of raised temperature resistance) protective film on the surface of the vibration-damping cushion layer 3;

[0052] (3) Install the vibration isolation sleeve 6 with an open top and no sealing plate 61, so that the first vibration isolation portion 62 of the vibration isolation sleeve 6 is sleeved outside the top of the rod body 5 of the anti-pulling anchor rod, and ensure that the top of the rod body 5 including the anti-pulling end plate 4 does not exceed the opening of the vibration isolation sleeve 6;

[0053] (4) Install the anti-pullout end plate 4 on the top of the rod body 5 of the anti-pullout anchor rod through the opening of the vibration isolation sleeve 6;

[0054] (5) Fill the vibration-damping material between the vibration-isolating sleeve 6 and the anti-pulling anchor rod with the anti-pulling end plate 4 from the opening of the vibration-isolating sleeve 6 to complete the filling of the vibration-isolating cushion layer 7;

[0055] (6) Seal the sealing plate 61 in the top opening of the first vibration isolation portion 62 of the vibration isolation sleeve 6;

[0056] (7) Casting the concrete foundation slab and embedding the vibration isolation sleeve 6 into the concrete foundation;

[0057] (8) Complete the construction of other superstructures.

[0058] It should be noted that the connection strength and structural measures of the welding and bolting described in this embodiment must meet the pull-out strength and building stability requirements of the building foundation layer 2. The materials and design parameters of the above-mentioned vibration-damping pad layer 3 and vibration-isolating pad layer 7 must meet the relevant design and construction requirements of the building.

[0059] Example 2

[0060] The anti-floating and vibration isolation structure of the second embodiment is basically the same as that of the first embodiment, and the similarities are not repeated here. The difference is that: in order to optimize the convenience of on-site construction and the controllability of construction quality, the anti-floating and vibration isolation structure of the present embodiment is as follows: Figure 2 As shown, a sunken section is provided on the foundation layer 2, and the sunken section is inserted into the base layer 1. The vibration isolation sleeve 6 and the anti-pullout anchor rod are both located in the sunken section, so that the elevation of the semi-floating system is appropriately sunk and the top of the vibration isolation sleeve 6 is flush with the bottom plate of the non-sunken section of the foundation layer 2.

[0061] The construction process of the anti-floating vibration isolation structure of this embodiment is basically the same as that of the first embodiment, with only the installation position being different, so the construction process will not be repeated here.

[0062] Example 3

[0063] The anti-floating and vibration isolation structure of the third embodiment is basically the same as that of the first embodiment, and the similarities are not repeated here. The difference is that in the anti-floating and vibration isolation structure of the present embodiment, the anti-pullout anchor rod passes through the side wall of the foundation layer 2 obliquely and is then inserted into the foundation layer 1. Figure 3As shown, the pull-out anchor rod of this embodiment passes through the side wall of the foundation layer 2 at an angle from the foundation layer 2 and is inserted into the base layer 1, thereby ensuring reliable fixation between the side wall of the foundation layer 2 and the base layer 1, and effectively suppressing the vibration influence on the side wall of the foundation layer 2 to improve the stability of the building.

[0064] In order to improve the pull-out strength between the side wall of the foundation layer 2 and the base layer 1, it is preferred that an angle be formed between the pull-out anchor rod and the bottom plate of the foundation layer 2. Figure 3 As shown in the example, the left side of the side wall of the foundation layer 2 is the base layer 1 , and the pull-out anchor rod passes through the side wall of the foundation layer 2 and is inserted into the base layer 1 from the upper right to the lower left.

[0065] It is understood that when the pull-out anchor rod is inserted into the base layer 1, it is inserted from the top to the bottom, obliquely from the side where the foundation layer 2 is located. That is, when the right side of the side wall of the foundation layer 2 is the base layer 1, the pull-out anchor rod can be inserted into the base layer 1 by passing through the side wall of the foundation layer 2 obliquely from the upper left to the lower right.

[0066] The construction process of the anti-floating vibration isolation structure of this embodiment is basically the same as that of the first embodiment, with only the installation position being different, so the construction process will not be repeated here.

[0067] Example 4

[0068] The fourth embodiment is substantially the same as the anti-floating and vibration isolation structure described in the second embodiment, and partially shares similarities with the anti-floating and vibration isolation structure described in the third embodiment. The similarities between the fourth embodiment and the second and third embodiments are not repeated here. The difference lies in that, in the anti-floating and vibration isolation structure of this embodiment, the anti-pullout anchor rods are inserted into the subgrade layer 1 after obliquely passing through the side wall of the subgrade layer 2 from the sunken section of the subgrade layer 2.

[0069] Specifically, in order to optimize the convenience of on-site construction and the controllability of construction quality, in the anti-floating and vibration isolation structure described in this embodiment, a sunken section is provided on the side wall of the foundation layer 2, and the sunken section is inserted into the base layer 1 laterally from the side. The vibration isolation sleeve 6 and the anti-pull-out anchor rod are both located in the sunken section, and the anti-pull-out anchor rod is obliquely inserted into the base layer 1 after passing through the side wall of the foundation layer 2 from the sunken section on the side wall of the foundation layer 2, thereby ensuring reliable fixation between the foundation layer 2 and the base layer 1, and effectively suppressing the vibration influence on the foundation layer 2, so as to improve the stability of the building.

[0070] The insertion direction of the pull-out anchor rod described in this embodiment when inserted from the foundation layer 2 into the subgrade layer 1 is the same as that of the third embodiment, and the similarities will not be repeated here. The difference is that the insertion position of the pull-out anchor rod of this embodiment is different from that of the third embodiment. The pull-out anchor rod of this embodiment is inserted into the subgrade layer 1 from the sinking section when inserted.

[0071] The construction process of the anti-floating vibration isolation structure of this embodiment is basically the same as that of the first embodiment, with only the installation position being different, so the construction process will not be repeated here.

[0072] Example 5

[0073] This fifth embodiment provides a building based on the first, second, third, and fourth embodiments described above. The building includes the aforementioned anti-floating and vibration isolation structure. The building may be installed with only one of the aforementioned anti-floating and vibration isolation structures, or a combination of multiple anti-floating and vibration isolation structures.

[0074] In summary, the anti-floating and vibration isolation structure of this embodiment includes an anti-pullout anchor rod and a vibration isolation sleeve 6. The anti-pullout anchor rod is inserted into the ground layer 1 from the foundation layer 2. The vibration isolation sleeve 6 is located in the foundation layer 2 and is sleeved on the outside of the anti-pullout anchor rod so that the anti-pullout anchor rod and the foundation layer 2 are not in direct contact. The interior of the vibration isolation sleeve 6 is provided with a space for providing vibration reduction for the anti-pullout anchor rod, so that the anti-pullout anchor rod and the foundation layer 2 are completely isolated. The vibration isolation sleeve 6 and the anti-pullout anchor rod are used to form a piston-type overall semi-floating system of the building foundation, thereby solving the defect in the prior art that the target building is difficult to suspend after adopting anti-floating piles (i.e., the anti-pullout anchor rod described in the present invention) when the building is designed for anti-floating. This structure is particularly suitable for the application of the building foundation floating method using an elastic vibration damping pad 3 to treat projects with a maximum burial depth below the groundwater level in isolating the vertical vibration influence of rail transit, and can enable the building foundation layer 2 as a whole to achieve a higher vibration reduction efficiency, thereby improving the vibration suppression stability of the building foundation.

[0075] The embodiments of the present invention are presented for purposes of illustration and description and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are chosen and described in order to better illustrate the principles of the invention and its practical application and to enable those skilled in the art to understand the invention and design various embodiments with various modifications as suited for specific applications.

Claims

1. An anti-floating vibration isolation structure, characterized in that: The invention comprises an anti-pullout anchor rod and a vibration isolation sleeve, wherein the anti-pullout anchor rod is inserted into the ground layer from the foundation layer, the vibration isolation sleeve is located in the foundation layer and is sleeved outside the anti-pullout anchor rod so that the anti-pullout anchor rod and the foundation layer do not directly contact each other, and the interior of the vibration isolation sleeve is provided with a space for providing vibration reduction for the anti-pullout anchor rod, thereby completely isolating the anti-pullout anchor rod from the foundation layer, so as to utilize the vibration isolation sleeve and the anti-pullout anchor rod to form a piston-type overall semi-floating building foundation system; An elastic vibration-damping pad is installed between the foundation layer and the subgrade layer, and a portion of the input energy is reduced by the damping effect of the vibration-damping pad, so that the target building is suspended; The vibration isolation sleeve and the anti-pulling anchor rod are inserted into the foundation layer, and the anti-floating vibration isolation structure is separated from the foundation layer by the vibration damping pad to form the semi-floating system; The space is filled with an elastic vibration isolation pad layer, and the vibration isolation pad layer is wrapped around the anti-pullout anchor rod; The anti-pullout anchor rod comprises a rod body and an anti-pullout end plate, one end of the rod body is inserted into the base layer, and the other end is fixedly connected to the anti-pullout end plate, and a portion of the rod body is inserted into the foundation layer, and the portion of the rod body located in the foundation layer and the outside of the anti-pullout end plate are both covered with the vibration isolation sleeve; The anti-pullout anchor rod is inserted into the foundation layer after vertically passing through the bottom plate of the foundation layer from the foundation layer; or the anti-pullout anchor rod is inserted into the foundation layer after obliquely passing through the side wall of the foundation layer from the foundation layer, and an angle is formed between the anti-pullout anchor rod and the bottom plate of the foundation layer; The vibration isolation sleeve includes a first vibration isolation portion and a second vibration isolation portion. The interior of the first vibration isolation portion and the interior of the second vibration isolation portion are respectively provided with a space for filling the vibration isolation pad layer. The first vibration isolation portion is sleeved on the outside of the anti-pulling end plate, and the second vibration isolation portion is sleeved on the outside of the portion of the rod located in the foundation layer. One end of the second vibration isolation portion is connected to the first vibration isolation portion, and the other end of the second vibration isolation portion is connected to the foundation layer. The anti-pulling end plate includes a connecting portion and a boss, both of which are clamped in the first vibration isolation portion, the connecting portion is connected to the end of the rod body, the boss is connected to the outer edge of the connecting portion, and the boss extends outward from the outer wall of the rod; the outer dimension of the boss is larger than the inner dimension of the second vibration isolation portion; The vibration isolation sleeve further includes a sealing plate. The top of the first vibration isolation portion is open, and the sealing plate is sealed in the opening.

2. The anti-floating vibration isolation structure according to claim 1, characterized in that: A sunken section is provided on the foundation layer, and the sunken section is inserted into the ground layer. The vibration isolation sleeve and the anti-pulling anchor rod are both located in the sunken section.

3. A building, characterized in that: It comprises the anti-floating vibration isolation structure according to any one of claims 1 to 2.

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