Foundation vibration isolation structure suitable for being closely adjacent to subway basement

Abstract

The utility model belongs to a foundation vibration isolation structure suitable for being adjacent to a subway basement in the field of civil engineering, and adopts the technical scheme that the foundation vibration isolation structure comprises double bottom plates and an anti-vibration pad, the double bottom plates comprise an upper bottom plate and a lower bottom plate, and the anti-vibration pad is arranged between the upper bottom plate and the lower bottom plate; the basement outer wall and the enclosure wall form double walls, the basement outer wall is connected with the upper bottom plate, the enclosure wall is connected with the lower bottom plate, and the anti-vibration pad extends upwards to be laid between the basement outer wall and the enclosure wall; the pile head of the uplift pile is fixedly embedded in the lower bottom plate; a waterproof layer is arranged below the anti-vibration pad, and the waterproof layer is arranged between the double bottom plates and the double walls; after construction of the uplift piles and the enclosure wall is completed, a cushion layer, a lower bottom plate, a waterproof layer, an anti-vibration pad, an upper bottom plate and a basement outer wall are sequentially formed from bottom to top. While the anti-floating and waterproof requirements of the basement foundation slab are met, the problem of environmental vibration caused by subway operation is solved, the use space in a building is not affected, and meanwhile the construction cost and the construction difficulty are low.

Description

Technical Field

[0001] The utility model relates to the field of civil engineering, in particular to a foundation vibration isolation structure suitable for a basement adjacent to a subway. Background Art

[0002] With the rapid development of economy and society, the development of urban underground space has become a focus of people's attention. A large number of new building basements are close to subway tunnels. The environmental vibration caused by subways will inevitably have an adverse effect on the building structure and the people and precision equipment inside. The existing basement vibration isolation technology has the following problems:

[0003] 1. It is impossible to solve the problem of basement foundation pull-out. In engineering design, pull-out piles are usually used to solve the problem of basement foundation slab anti-floating. However, the traditional setting method of vibration damping pads is to lay them directly under the foundation slab, which will directly lead to the inability to use pull-out piles.

[0004] 2. The construction is difficult and the basement is difficult to waterproof. The existing lock-type vibration isolation and anti-pullout piles need to be wrapped with vibration isolation materials at the restrained ends, which makes the overall construction difficult. When there are many piles, it will consume a lot of manpower and construction time; at the same time, there is a great risk of groundwater leakage at the location where the pile head and the foundation bottom plate are embedded, making waterproofing difficult.

[0005] 3. Occupy usable space. The vibration isolation support solution requires the installation of vibration isolation supports at the location of the vertical components in the basement, which will cause problems such as maintenance and conflict with internal pipelines, and seriously occupy the internal usable space. Utility Model Content

[0006] In order to solve the above technical problems, the utility model provides a foundation vibration isolation structure suitable for a basement adjacent to a subway. While meeting the anti-floating and waterproof requirements of the basement foundation slab, it solves the environmental vibration problem caused by the operation of the subway without affecting the use space inside the building. At the same time, the construction cost is low and the construction difficulty is low.

[0007] The technical solution is: a foundation vibration isolation structure suitable for the basement adjacent to the subway includes a double bottom plate and a vibration damping pad; the double bottom plate includes an upper bottom plate and a lower bottom plate; a vibration damping pad is arranged between the upper bottom plate and the lower bottom plate. As an optimization, a waterproof layer is arranged under the vibration damping pad, and the waterproof layer is arranged between the double bottom plates.

[0008] Based on the above technical features: the basement outer wall and the enclosure wall form a double wall, the basement outer wall is connected to the upper floor; the enclosure wall is connected to the lower floor; the vibration-damping pad extends upward and is laid between the basement outer wall and the enclosure wall. As an optimization, a waterproof layer is set under the vibration-damping pad, and the waterproof layer is set between the double floor and the double wall.

[0009] Based on the above technical features: the pile head of the pull-out pile is embedded in the lower base plate.

[0010] The utility model provides a foundation vibration isolation structure suitable for a basement adjacent to a subway station, and its advantages and positive effects include:

[0011] 1. The utility model lays vibration-damping pads between the upper and lower bottom plates and between the outer walls and enclosure walls of the basement. The flexible materials in the vibration-damping pads can effectively block the environmental vibrations generated by the subway and transmitted through the soil, thereby achieving the vibration reduction and isolation effect of the building structure adjacent to the subway;

[0012] 2. The utility model solves the problem of anti-floating of the basement foundation slab by setting up a double bottom plate structure, in which the lower bottom plate is directly embedded with the head of the anti-pulling pile, and no vibration isolation structure is required above the upper bottom plate, thus solving the problem of the vibration isolation support solution occupying the internal use space;

[0013] 3. The utility model forms a cushion layer, a lower base plate, a waterproof layer, a vibration-damping pad, an upper base plate and an outer wall of a basement in sequence from bottom to top. The vibration-damping pad and the waterproof layer can be laid at one time, and the overall construction difficulty is low. This solves the problem that the existing lock-type vibration-isolating and anti-pulling piles need to be wrapped with vibration-isolating materials at the constrained ends one by one.

[0014] In summary, the utility model not only meets the anti-floating and waterproof requirements of the basement foundation slab, but also solves the environmental vibration problem caused by the operation of the subway, does not affect the use space inside the building, and has low construction cost and low construction difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic cross-sectional view of a foundation vibration isolation structure suitable for a basement adjacent to a subway station according to an embodiment of the utility model.

[0016] The numbers in the figure indicate:

[0017] 00-subway tunnel; 10-upper base plate; 20-vibration damping pad; 30-waterproof layer; 40-lower base plate; 50-cushion layer; 60-basement exterior wall; 70-retaining wall; 80-pull-out piles. DETAILED DESCRIPTION

[0018] The following is a further detailed description of the specific implementations of the present invention in conjunction with the accompanying drawings. These implementations are only used to illustrate the present invention, but not to limit the present invention.

[0019] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0020] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "install", "connect" and "connect" should be understood in a broad sense.

[0021] Reference Figure 1 A foundation vibration isolation structure suitable for a basement adjacent to a subway is located on one side of a subway tunnel 00. The foundation vibration isolation structure includes a double bottom plate and a vibration damping pad 20; the double bottom plate includes an upper bottom plate 10 and a lower bottom plate 40; a vibration damping pad 20 is arranged between the upper bottom plate 10 and the lower bottom plate 40, and the vibration damping pad 20 is made of polyurethane or rubber, with a thickness of about 40-80 mm, and its performance parameters meet both the subway vibration isolation requirements and the foundation design requirements.

[0022] The basement outer wall 60 and the enclosure wall 70 form a double wall. The basement outer wall 60 is connected to the upper floor 10; the enclosure wall 70 is connected to the lower floor 40; and the vibration-damping pad 20 extends upward and is laid between the basement outer wall 60 and the enclosure wall 70.

[0023] The pile head of the anti-pulling pile 80 is embedded in the lower base plate 40 .

[0024] A waterproof layer 30 is provided under the vibration-damping pad 20 and between the double bottom plates. The waterproof layer 30 is made of asphalt or polymer waterproofing membrane and meets the requirements of basement waterproofing design. The waterproof layer 30 can also extend upwards with the vibration-damping pad 20 and be laid between the basement outer wall 60 and the enclosure wall 70.

[0025] After the construction of the anti-pulling piles 80 and the retaining wall 70 is completed, the cushion layer 50, the lower base plate 40, the waterproof layer 30, the vibration-damping pad 20, the upper base plate 10 and the basement outer wall 60 are formed in sequence from bottom to top.

[0026] According to a large number of engineering experiences in basement anti-floating and vibration reduction and isolation of buildings adjacent to subways, the utility model proposes a foundation vibration isolation structure suitable for basements adjacent to subways. On the basis of the traditional laying method of vibration reduction pads, a double bottom plate structure is set up, and vibration reduction pads are laid between the upper and lower bottom plates and between the outer walls and enclosure walls of the basement, effectively blocking the environmental vibration generated by the subway and transmitted through the soil, and achieving the vibration reduction and isolation effect of the building structure adjacent to the subway; further, the head of the pull-out pile is directly embedded in the lower bottom plate, which solves the problem of anti-floating of the basement foundation; further, the vibration reduction pad and the waterproof layer can be laid at one time, and the overall construction difficulty is low, which solves the problem that the existing lock-type vibration isolation pull-out piles need to be wrapped with vibration isolation materials at the constrained ends one by one. While meeting the requirements of anti-floating and waterproofing of the basement foundation, the utility model solves the problem of environmental vibration caused by subway operation, does not affect the use space inside the building, and has low construction cost and low construction difficulty.

[0027] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A foundation vibration isolation structure suitable for use in a basement adjacent to a subway station, characterized in that: The basic vibration isolation structure comprises a double bottom plate and a vibration damping pad (20); the double bottom plate comprises an upper bottom plate (10) and a lower bottom plate (40); and the vibration damping pad (20) is arranged between the upper bottom plate (10) and the lower bottom plate (40).

2. The foundation vibration isolation structure suitable for use in a basement adjacent to a subway station according to claim 1, characterized in that: The basement outer wall (60) and the enclosure wall (70) form a double wall, the basement outer wall (60) is connected to the upper floor plate (10); the enclosure wall (70) is connected to the lower floor plate (40); the vibration-damping pad (20) extends upward and is laid between the basement outer wall (60) and the enclosure wall (70).

3. A foundation vibration isolation structure suitable for use in a basement adjacent to a subway station according to claim 1 or 2, characterized in that: The pile head of the pull-out resistant pile (80) is embedded in the lower base plate (40).

4. The foundation vibration isolation structure suitable for use in a basement adjacent to a subway station according to claim 1, characterized in that: A waterproof layer (30) is arranged under the vibration-damping pad (20), and the waterproof layer (30) is arranged between the double bottom plates.

5. The foundation vibration isolation structure suitable for use in a basement adjacent to a subway station according to claim 2, characterized in that: A waterproof layer (30) is arranged under the vibration-damping pad (20), and the waterproof layer (30) is arranged between the double bottom plate and the double wall.

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