Friction pendulum fixing structure of building shock insulation support

Abstract

The utility model relates to a friction pendulum fixing structure of a building shock insulation support. The friction pendulum fixing structure comprises an embedded part, a limiting clamp and a rear plate. The multiple sets of embedded parts are fixedly connected with the steel reinforcement framework, the upper ends of the embedded parts upwards extend out of the pouring face and form connecting parts, the connecting parts are cylindrical and are provided with external threads, and the connecting parts are in threaded connection with leveling nuts and fastening nuts; the limiting clamp is annular, the connecting part is sleeved with the limiting clamp, the rear plate is arranged on the upper surface of the limiting clamp, and the limiting clamp and the rear plate are both distributed and fastened between the leveling nut and the fastening nut. The limiting clamp is combined with the embedded part to be embedded, the rear plate is connected to the limiting clamp in a threaded mode, the rear plate is installed afterwards, the influence of the rear plate and the friction pendulum support on pouring and vibrating is avoided, the limiting clamp is of an annular structure, pouring and vibrating construction is convenient, the construction difficulty in the embedding process can be easily reduced, and the construction efficiency is improved. And the construction efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a friction pendulum fixing structure of a building seismic isolation support. Background Art

[0002] In recent years, the friction pendulum foundation for earthquake resistance has been increasingly favored by structural designers due to its own advantages, and has been widely used in school buildings. The friction pendulum is a seismic isolation system widely used in the seismic design of building structures. The friction pendulum can achieve seismic isolation and energy dissipation by generating friction between the sliding surface of the support and the slider. It can significantly reduce the impact of ground movement on the building structure during an earthquake, thereby protecting the structure from serious damage.

[0003] It is very important to ensure the flatness and firmness of the friction pendulum installation. The friction pendulum is usually installed by pre-embedding or anchoring. Pre-embedding has a more reliable fixed foundation, and the existing pre-embedded installation methods are mainly divided into two methods: directly embedding the support of the friction pendulum and setting an embedded plate to fix the friction pendulum. However, since the size of the friction pendulum itself will occupy a certain space, for some conventional medium-sized construction projects, the diameter of the friction pendulum may be about 1 meter; in large or important buildings, bridges and other structures, the friction pendulum that needs to bear a larger load may have a diameter of 2 meters or even larger.

[0004] The traditional pre-embedded method will face technical challenges and adverse effects during the pouring and vibration of concrete. In actual construction, the friction pendulum or its pre-embedded seat will hinder the pouring and vibration of concrete, making it impossible to pour the concrete evenly, affecting the vibration effect, increasing the difficulty of construction, and further reducing the strength and waterproof performance of the concrete, thereby affecting the reliability of the fixed foundation of the friction pendulum, especially in the area behind and below the friction pendulum or the pre-embedded plate.

[0005] Based on this, it is necessary to study a friction pendulum fixed structure of building seismic isolation bearings. Utility Model Content

[0006] In view of this, the purpose of the utility model is to provide a building seismic isolation bearing friction pendulum fixing structure, which can effectively solve the problem that the traditional friction pendulum embedded structure will hinder the construction processes such as casting and vibration, resulting in greater construction difficulty.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0008] A building seismic isolation bearing friction pendulum fixing structure, comprising embedded parts, limit cards and rear plates;

[0009] The embedded parts are provided in multiple groups and are all fixedly connected to the steel skeleton. The upper ends of the embedded parts extend upward from the casting surface to form a connecting part. The connecting part is cylindrical and has an external thread. The connecting part is threadedly connected with a leveling nut and a fastening nut. The fastening nut is located above the leveling nut.

[0010] The limit card is annular, and is evenly spaced with a plurality of first through holes adapted to the connection part, and is sleeved on the connection part through the first through holes to connect the embedded parts into a whole; the upper surface of the limit card is higher than the casting surface;

[0011] The rear plate is arranged on the upper surface of the limit card, and is provided with a second through hole adapted to the connecting portion and the first through hole, and is sleeved on the connecting portion through the second through hole;

[0012] The limit card and the rear plate are distributed and fastened between the leveling nut and the fastening nut.

[0013] Furthermore, the embedded part is in a U-shape that is open upward, and both ends of the embedded part extend vertically upward to form a connecting portion.

[0014] Furthermore, a locking nut is threadedly connected to the connecting portion, and the locking nut is located above the fastening nut and locks the fastening nut.

[0015] Furthermore, a plurality of stepped holes are provided on the lower surface of the rear plate, and bolt sets are passed upward through the stepped holes to form a mounting area.

[0016] Furthermore, the lower end surface of the limit card is provided with an embedded ring, the outer side wall of the embedded ring is provided with saw teeth, and the limit card, the embedded ring and the saw teeth are an integrated structure.

[0017] The beneficial effects of the above technical solution are:

[0018] (1) The utility model pre-embeds the limit card in combination with the embedded parts, and the rear plate is threadedly connected to the limit card. Compared with the traditional one-piece embedded plate structure, it adopts a phased construction, allowing the installation and adjustment of the rear plate and the friction pendulum support after the structural concrete is poured and solidified, avoiding the influence of the rear plate and the friction pendulum support on the pouring and vibration. The limit card is a ring structure, which is simpler than the one-piece embedded plate, and the avoidance space in the ring is convenient for pouring and vibration construction, which can reduce the construction difficulty during pre-embedding, solves the problem that the traditional friction pendulum embedded structure will hinder the pouring and vibration and cause greater construction difficulty, and improves the construction efficiency. In addition, by improving the convenience of pre-embedded construction and reducing the construction difficulty, the construction quality of pouring and vibration can be improved, thereby improving the structural strength of the concrete foundation, and finally improving the reliability of the fixed foundation of the friction pendulum, forming an additional reinforcement effect.

[0019] (2) The threaded connection design of the limit card and the rear plate of the utility model, the rear plate is used to fix the friction pendulum, so that when the friction pendulum needs to be maintained or replaced later, it can be adapted to different types of friction pendulums by disassembling and replacing different types of rear plates, avoiding major disassembly of the entire embedded system, thereby simplifying the maintenance process.

[0020] (3) The connection node between the limit card and the rear plate of the utility model provides additional adjustment advantages. When the flatness of the limit card does not meet the requirements, the flatness can be fine-tuned by introducing a gasket between the limit card and the rear plate. Combined with the connection node between the rear plate and the friction pendulum, two-level fine-tuning can be performed to expand the adjustable range and evenly distribute the adjustment range, thereby improving the flexibility of fine-tuning. It is suitable for situations where a larger flatness adjustment is required. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a side view schematic diagram of the utility model;

[0022] Figure 2 It is a front view schematic diagram of the utility model;

[0023] Figure 3 This is a schematic diagram of a limit card;

[0024] Figure 4 It is a schematic diagram of embedded parts;

[0025] Figure 5 is a schematic diagram of the rear panel;

[0026] Figure 6 It is a schematic diagram of another implementation of the limit card.

[0027] Figure numerals: 1 is an embedded part, 2 is a limit card, 3 is a rear plate, 4 is a steel bar skeleton, 5 is a casting surface, 6 is a leveling nut, 7 is a fastening nut, 8 is a locking nut, 9 is a bolt kit, 101 is a connecting part, 201 is a first through hole, 202 is an embedded ring, 203 is a serration, 301 is a second through hole, and 302 is a stepped hole. DETAILED DESCRIPTION

[0028] The utility model is further described in detail below with reference to the accompanying drawings and specific implementation methods:

[0029] Example 1: This example aims to provide a building seismic isolation bearing friction pendulum fixing structure, which is mainly used to provide a fixed foundation for the friction pendulum lower bearing, and aims to solve the problem that the traditional friction pendulum embedded structure will hinder the construction processes such as casting and vibration, resulting in greater construction difficulty.

[0030] A building seismic isolation bearing friction pendulum fixing structure, such as Figure 1 and Figure 2, including embedded parts 1, limit cards 2 and rear plates 3; the embedded parts 1 are provided with multiple groups and are fixedly connected to the steel skeleton 4, the connection method is mainly steel bar binding, welding is performed when necessary, the upper end of the embedded part 1 extends upward from the casting surface 5 and forms a connecting part 101, the casting surface 5 is the height position where the concrete needs to be poured, the embedded part 1 is made of steel bars, and the connecting part 101 at the upper end thereof is ensured to be cylindrical and has an external thread, and the connecting part 101 is threadedly connected with a leveling nut 6 and a fastening nut 7, and the fastening nut 7 is located above the leveling nut 6; Figure 4 The embedded part 1 is bent into an upwardly open U-shape, and both ends of the embedded part 1 extend vertically upward to form a connecting portion 101. Each embedded part 1 corresponds to two connecting portions 101. In other embodiments, the embedded part 1 can also be a vertical structure or a hook-shaped structure at the bottom. Each embedded part 1 corresponds to only one connecting portion 101. The present example adopts a U-shaped structure, which can combine the two connecting portions 101 into a whole, and the bottom of the U-shape is easier to be tied and fixed with the steel structure, and a more secure connection point is formed after pouring and curing.

[0031] like Figure 3 The limit card 2 is annular and made of a strip steel plate. The limit card 2 is provided with four first through holes 201. The four first through holes 201 are distributed at the four corners of the limit card 2 and are centrally symmetrical to each other. The size of the first through holes 201 is adapted to the connecting portion 101. The embedded parts 1 are provided with two groups. The four connecting portions 101 are respectively sleeved and connected with the four first through holes 201 and fixed by leveling nuts 6 and fastening nuts 7, so that the limit card 2 connects the two embedded parts 1 into a whole; the upper surface of the limit card 2 is higher than the casting surface 5 to avoid affecting the flatness of its upper surface.

[0032] The rear plate 3 is arranged on the upper surface of the limit card 2 and is mainly used to fix and install the friction pendulum. Figure 5 The rear plate 3 is provided with a second through hole 301 that matches the size and position of the connecting portion 101 and the first through hole 201, and is sleeve-connected with the connecting portion 101 through the second through hole 301. The limit card 2 and the rear plate 3 are distributed and fastened between the leveling nut 6 and the fastening nut 7.

[0033] Furthermore, a locking nut 8 is threadedly connected to the connecting portion 101. The locking nut 8 is located above the fastening nut 7 and locks the fastening nut 7, thereby forming a double-nut locking structure to prevent the fastening nut 7 from loosening after long-term use.

[0034] Furthermore, a plurality of stepped holes 302 are provided on the lower surface of the rear plate 3, and a bolt kit 9 ​​is passed upward through the stepped holes 302 to form an installation area. The specific positions and number of the stepped holes 302 need to be designed according to the actual size of the friction pendulum and the positional characteristics of its connection points. The stepped holes 302 are mainly used to provide an installation basis for the friction pendulum. During subsequent maintenance, if a different friction pendulum needs to be replaced, it is only necessary to replace the rear plate 3 that is compatible with it. However, the rear plate 3 after replacement still needs to ensure that the second through hole 301 is compatible with the first through hole 201, and the stepped hole 302 is compatible with the connection point of the new friction pendulum.

[0035] The specific use process of this embodiment is as follows:

[0036] First, the embedded part 1 is arranged between the steel skeleton 4, and the leveling nut 6 is threadedly connected to the connection part 101 of the embedded part 1, and then the limit card 2 is inserted into the connection part 101 of the embedded part 1, and then the fastening nut 7 is threadedly connected to the connection part 101 to form the embedded part 1 and the limit card 2 into a whole; the limit card 2 is arranged horizontally by straightening the limit card 2, and then the embedded part 1 and the steel skeleton 4 are tied and fixed, and the flatness of the limit card 2 is re-judged after fixation, and fine-tuned by adjusting the upper and lower positions of the leveling nut 6 to ensure that the upper surface of the limit card 2 is horizontal; then the concrete structure is cast and vibrated, and the casting surface 5 should overflow the limit card 2 but be lower than the upper surface of the limit card 2, so as to avoid the limit card 2 from being partially suspended and the upper surface of the limit card 2 from being affected; after the concrete is solidified, the rear plate 3 and the bolt kit 9 ​​are installed, and finally the lower support of the friction pendulum is correspondingly installed on the installation area formed by the bolt kit 9.

[0037] Embodiment 2: This embodiment is basically the same as Embodiment 1, except that the structure of the limit card 2 is optimized to enhance the firmness of the pre-embedded structure. This embodiment further describes the structure.

[0038] In this embodiment, considering that the effect of pre-embedding will directly affect the firmness of the friction pendulum installation foundation, in order to further improve the firmness of pre-embedding, Figure 6 The lower end surface of the limit card 2 is provided with an embedded ring 202, which is also a square ring structure. The outer wall of the embedded ring 202 is provided with serrations 203 to enhance the firmness of the embedding. The limit card 2, the embedded ring 202 and the serrations 203 are an integrated metal structure.

Claims

1. A friction pendulum fixing structure for a building seismic isolation support, characterized in that: It comprises an embedded part (1), a limit card (2) and a rear plate (3); The embedded parts (1) are provided in multiple groups and are all fixedly connected to the steel frame (4); the upper end of the embedded parts (1) extends upward from the casting surface (5) to form a connecting portion (101); the connecting portion (101) is cylindrical and has an external thread; a leveling nut (6) and a fastening nut (7) are threadedly connected to the connecting portion (101); the fastening nut (7) is located above the leveling nut (6); The limiting card (2) is annular in shape, and is provided with a plurality of first through holes (201) that are evenly spaced and adapted to the connecting portion (101). The limiting card (2) is sleeved on the connecting portion (101) through the first through holes (201) to connect the embedded parts (1) into a whole; the upper surface of the limiting card (2) is higher than the casting surface (5); The rear plate (3) is arranged on the upper surface of the limit card (2), the rear plate (3) is provided with a second through hole (301) adapted to the connecting portion (101) and the first through hole (201), and is sleeved on the connecting portion (101) through the second through hole (301); The limit card (2) and the rear plate (3) are both distributed and fastened between the leveling nut (6) and the fastening nut (7).

2. The friction pendulum fixing structure of a building seismic isolation support according to claim 1, characterized in that: The embedded part (1) is in a U-shape that is open upwards, and both ends of the embedded part (1) extend vertically upwards to form a connecting portion (101).

3. The friction pendulum fixing structure of a building seismic isolation support according to claim 1, characterized in that: A locking nut (8) is threadedly connected to the connecting portion (101); the locking nut (8) is located above the fastening nut (7) and locks the fastening nut (7).

4. The friction pendulum fixing structure of a building seismic isolation support according to claim 1, characterized in that: A plurality of stepped holes (302) are provided on the lower surface of the rear plate (3), and bolt sets (9) are passed upward through the stepped holes (302) to form a mounting area.

5. A building seismic isolation bearing friction pendulum fixing structure according to any one of claims 1 to 4, characterized in that: The lower end surface of the limit card (2) is provided with an embedded ring (202), and the outer side wall of the embedded ring (202) is provided with saw teeth (203). The limit card (2), the embedded ring (202) and the saw teeth (203) are an integrated structure.

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