Novel shock insulation and absorption hybrid control structure system

Abstract

The invention discloses a novel shock insulation and absorption hybrid control structure system, and belongs to the technical field of constructional engineering. The novel shock insulation and absorption hybrid control structure system comprises a shear wall fixed to a foundation, a frame is installed on the foundation through a shock insulation support, a set of gap dampers are arranged between the frame and the shear wall, and a corrugated steel plate is further arranged between the frame and the shear wall. The frame is separated from the shear wall, only the frame is subjected to seismic isolation design, meanwhile, the shear wall is fixed to the foundation and serves as a limiting device of the frame structure, and the gap damper is arranged between the frame and the shear wall, so that graded response to the seismic action is achieved. The overall anti-seismic property of the structure is remarkably improved, and the safety of a building under extreme conditions is enhanced.

Description

Technical Field

[0001] The invention belongs to the technical field of building engineering, and in particular relates to a novel isolation and damping hybrid control structural system. Background Art

[0002] Base isolation technology installs isolation devices between the foundation and the superstructure of the building to extend the natural vibration period of the building, thereby effectively reducing the structural acceleration and displacement response caused by earthquakes and alleviating the impact of earthquakes on the superstructure. Its core principle is to allow the building to produce a certain displacement relative to the foundation to reduce the seismic energy transmitted to the superstructure. At present, base isolation technology has been widely used in various types of structures, especially in buildings with high seismic performance requirements, such as frame structures, shear wall structures, frame-shear wall structures and large-span structures, effectively improving their seismic resistance.

[0003] The frame-shear wall structure is a building form that organically combines the frame structure with the shear wall structure, combining the flexibility of the frame with the stiffness and strong lateral resistance of the shear wall. The frame part mainly bears the vertical load of the building and provides lateral resistance to a certain extent. However, due to the relatively low lateral stiffness of the frame, the shear wall is introduced to significantly enhance the lateral resistance. The shear wall is usually made of reinforced concrete and is specifically used to resist horizontal loads. Through the synergistic effect of the frame and the shear wall, the frame structure can not only provide a flexible internal space layout, but also greatly improve the lateral stiffness of the overall structure with the help of the shear wall, ensuring that the building is more stable and safe when subjected to horizontal loads. The seismic isolation design of the frame-shear wall structure mainly dissipates the energy generated by the earthquake in the seismic isolation layer by setting an isolation layer between the upper structure and the foundation of the building, thereby reducing the vibration transmitted to the upper structure and improving the safety and stability of the building.

[0004] Frame-shear wall isolation structures have performed well in reducing earthquake damage to buildings, but they still face some problems and challenges in practical applications. For example, the isolation layer is usually made of flexible materials to extend the natural vibration period of the structure, thereby reducing the impact of seismic forces on the upper structure. However, under the action of long-period earthquakes, the horizontal displacement of the isolation layer may increase significantly. Excessive displacement may cause the isolation bearing to fail or even cause the destruction of the isolation layer, threatening the overall stability of the structure. In addition, due to the large difference in stiffness between the frame and the shear wall, the deformation modes of the two under the action of earthquakes are different, resulting in uneven distribution of internal forces. The shear wall with greater stiffness will bear more internal forces, while the frame with less stiffness will bear relatively less internal forces. This unbalanced stress state may cause the shear wall to be overloaded, increase the risk of cracking or damage, and affect the seismic performance of the structure. Summary of the invention

[0005] In response to the above-mentioned problems, the present invention proposes a new type of seismic isolation and damping hybrid control structural system to enhance the seismic performance of the overall structure, ensure the effective absorption and dissipation of seismic energy during an earthquake, reduce the response of the superstructure, reduce the internal force borne by the shear wall, and avoid damage caused by excessive internal force.

[0006] The above purpose is achieved through the following technical solutions: A novel isolation and damping hybrid control structural system of the present invention comprises a shear wall fixed on a foundation, a frame installed on the foundation through an isolation support, a group of gap dampers are arranged between the frame and the shear wall, and a corrugated steel plate is also arranged between the frame and the shear wall.

[0007] Furthermore, the gap damper includes an outer cylinder, a secondary cylinder is arranged inside the outer cylinder, an activation protrusion is arranged on the secondary cylinder, activation limit blocks are arranged on both sides of the activation protrusion on the inner side of the outer cylinder, the secondary cylinder is connected to the main oil cylinder, a piston is arranged in the main oil cylinder, and the outer end of the outer cylinder and the outer end of the piston are provided with connecting pins for connecting the frame and the shear wall respectively.

[0008] Furthermore, the corrugated steel plate between the shear wall and the frame is arranged on the beam of each layer of the shear wall, and a layer of panel is also arranged on the corrugated steel plate.

[0009] The present invention separates the frame from the shear wall, performs seismic isolation design on the frame only, fixes the shear wall to the foundation, acts as a limit device for the frame structure, and sets a gap damper between the frame and the shear wall to achieve a graded response to earthquake action. The present invention significantly improves the overall seismic performance of the structure and enhances the safety of the building under extreme conditions. Compared with the prior art, its beneficial effects are as follows: 1. This design fixes the shear wall on the foundation as a limit device, thereby limiting the displacement of the isolation layer and significantly enhancing the stiffness and stability of the overall structure.

[0010] 2. This design sets a gap damper between the frame and the shear wall in the vertical direction to effectively absorb and dissipate seismic energy, significantly reduce the response of the upper structure, and thus improve the shock absorption efficiency and stability of the structure. By using the gap damper, the connection strength between the frame and the shear wall is reduced, and the interaction between the two under the action of earthquake is reduced, thereby reducing the internal force of the shear wall and preventing structural damage caused by excessive internal force.

[0011] 3. This system ensures that personnel can reach the escape route safely and quickly when an earthquake occurs through the design of seismic isolation joints, thereby achieving safer and more efficient evacuation of the masses. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1It is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic structural diagram of a gap damper of the present invention; Figure 3 It is a schematic diagram of the corrugated plate installation structure of the present invention; Explanation of the reference numerals: 1. Frame; 2. Shear wall; 3. Gap damper; 4. Corrugated steel plate; 5. Seismic isolation bearing; 6. Foundation; 301. Outer cylinder; 302. Auxiliary cylinder; 303. Activation limit block; 304. Main cylinder; 305. Piston; 306. Connecting pin head; 307. Activation bump; 401. Panel. DETAILED DESCRIPTION

[0013] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0014] like Figure 1 As shown, a new type of isolation and damping hybrid control structure system of the present invention includes a shear wall 2 fixed on a foundation 6, a frame 1 is installed on the foundation 6 through a seismic isolation support 5, and a group of gap dampers 3 are arranged between the frame 1 and the shear wall 2, and a corrugated steel plate 4 is also arranged between the frame 1 and the shear wall 2. The corrugated steel plate 4 has a large out-of-plane bending stiffness, can withstand pedestrian loads, and is allowed to produce a certain degree of horizontal deformation under the action of an earthquake, which can ensure that when an earthquake occurs, people can reach the escape route safely and quickly, thereby more effectively evacuating the crowd and ensuring safety.

[0015] like Figure 2As shown, the gap damper 3 described in this embodiment includes an outer cylinder 301, a secondary cylinder 302 is arranged inside the outer cylinder 301, an activation protrusion 307 is arranged on the secondary cylinder 302, and activation limit blocks 303 are arranged on both sides of the activation protrusion 307 on the inner side of the outer cylinder 301. When the relative displacement between the frame and the shear wall reaches or exceeds the preset gap, the activation protrusion on the secondary cylinder contacts the activation limit block on the outer cylinder, and the gap damper is started to achieve a graded response to the earthquake action; the secondary cylinder 302 is connected to the main oil cylinder 304, and the main oil cylinder 304 is provided with a piston 305, and the outer end of the outer cylinder 301 and the outer end of the piston 305 are provided with connecting pin heads 306, which are respectively used to connect the frame 1 and the shear wall 2. The auxiliary cylinder 302 is connected to the main cylinder 304, and a piston 305 is provided in the main cylinder 304. The outer ends of the outer cylinder 301 and the piston 305 are both provided with connecting pins 306 for connecting the frame 1 and the shear wall 2 respectively.

[0016] like Figure 3 As shown, the corrugated steel plate 4 between the shear wall 2 and the frame 1 in this embodiment is arranged on the beam of each layer of the shear wall, and a layer of panel 401 is also arranged on the corrugated steel plate.

[0017] The present invention sets an isolation layer between the frame and the foundation, fixes the shear wall on the foundation, does not set an isolation layer, and uses it as a limit device of the frame structure to provide lateral stiffness and bearing capacity. At the same time, gap dampers are set on multiple floors between the frame structure and the shear wall, and isolation joints are designed to achieve a graded response to earthquake action.

[0018] In the case of a small earthquake, the seismic isolation layer absorbs most of the vibration, resulting in a small horizontal displacement of the upper structure, which does not trigger the activation threshold of the limit device, so the limit device does not work. Since the relative displacement between the frame and the shear wall does not exceed the preset gap of the gap damper, the damper will not be activated, so the frame and shear wall maintain a relatively independent motion state.

[0019] In the case of a moderate earthquake, the seismic isolation layer deforms significantly. As the earthquake intensity increases, the horizontal displacement of the frame gradually increases until it enters the working range of the limit device. At this time, the limit device begins to intervene to limit the horizontal displacement of the frame structure. When the relative displacement between the frame and the shear wall exceeds the preset gap of the gap damper, the damper is activated to slow down the relative movement between the frame and the shear wall by dissipating energy, thereby reducing the impact of the earthquake on the structure.

[0020] In the case of a major earthquake, the seismic isolation layer undergoes significant deformation, the displacement of the frame approaches the limit, and the limit device is fully involved to ensure the safety of the overall structure. At the same time, the relative displacement between the frame and the shear wall increases significantly, and the gap damper is fully activated, which effectively slows down the relative movement of the structure by dissipating a large amount of seismic energy, reduces the risk of earthquake damage to the building, and thus ensures the safety of the structure in a major earthquake.

[0021] The present invention avoids the problem of excessive internal force of the shear wall caused by rigid connection by flexibly configuring the gap damper, and at the same time improves the seismic performance of the overall structure by dissipating energy during a major earthquake.

Claims

1. A new type of isolation and damping hybrid control structure system, characterized in that: The novel isolation and damping hybrid control structure system comprises a shear wall (2) fixed on a foundation (6); a frame (1) is installed on the foundation (6) via an isolation support (5); a group of gap dampers (3) are arranged between the frame (1) and the shear wall (2); and a corrugated steel plate (4) is also arranged between the frame (1) and the shear wall (2).

2. A novel isolation and damping hybrid control structure system according to claim 1, characterized in that: The clearance damper (3) comprises an outer cylinder (301), a secondary cylinder (302) is arranged inside the outer cylinder (301), an activation protrusion (307) is arranged on the secondary cylinder (302), activation limit blocks (303) are arranged on both sides of the activation protrusion (307) on the inner side of the outer cylinder (301), the secondary cylinder (302) is connected to the main oil cylinder (304), a piston (305) is arranged in the main oil cylinder (304), and the outer end of the outer cylinder (301) and the outer end of the piston (305) are both provided with connecting pins (306) for connecting the frame (1) and the shear wall (2) respectively.

3. A novel isolation and damping hybrid control structure system according to claim 1 or 2, characterized in that: The corrugated steel plate (4) between the shear wall (2) and the frame (1) is arranged on the beam of each layer of the shear wall, and a layer of panel (401) is also arranged on the corrugated steel plate.

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