In-plane arch support and damper hybrid energy dissipation device

Abstract

The utility model discloses a kind of in-plane arc-shaped support and damper hybrid performance shock absorber devices, comprising: steel column, steel beam, arc energy dissipation support, conventional support and two viscous dampers;Wherein, steel column and steel beam are formed frame structure by high-strength bolt or welding mode;Arc energy dissipation support and conventional support are set in the inside of frame structure in cross shape, and are formed integral force system with frame structure by high-strength bolt or welding mode respectively;Two viscous dampers are located on conventional support, and respectively located at the two sides of arc energy dissipation support and conventional support intersection point, to form the energy dissipation path of series arrangement, the utility model overcomes the defect that traditional support structure energy dissipation capacity is insufficient, while solve the problem that rigidity contribution is limited when damper is used alone, realize the optimization matching of rigidity and damping, have certain popularization value.

Description

Technical Field

[0001] This utility model relates to the field of building structure vibration reduction technology, and in particular to a hybrid vibration reduction device combining in-plane bow-shaped support and damper. Background Technology

[0002] Located in a complex geological region where the Circum-Pacific and Eurasian seismic belts intersect, my country faces increasingly prominent seismic resistance requirements for buildings due to urbanization. Traditional seismic-resistant structures have significant shortcomings when dealing with super high-rise and large-span buildings, mainly manifested in the following ways: traditional bracing systems struggle to simultaneously meet the dual requirements of stiffness and energy dissipation; conventional damper configurations suffer from inherent defects such as large space occupation and poor coordination; and existing technologies generally employ a single energy dissipation mechanism, resulting in insufficient adaptability. According to the revision notes of the "Code for Seismic Design of Buildings" GB50011-2010, the energy dissipation efficiency of traditional bracing structures under rare earthquakes is generally less than 40%. Although seismic reduction technologies have improved building energy dissipation performance to some extent, existing systems still struggle to meet the demands of multi-level seismic action.

[0003] Against this backdrop, there is an urgent need to develop new vibration reduction technologies, especially synergistic composite vibration reduction mechanisms, to ensure seismic performance while meeting the needs of green building development and achieving a dual optimization of engineering practicality and economy. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a hybrid performance damping device combining in-plane bow-shaped support and damper. This overcomes the shortcomings of insufficient energy dissipation capacity of traditional support structures and solves the problem of limited stiffness contribution when the damper is used alone, thus achieving an optimized match between stiffness and damping.

[0005] To achieve the above-mentioned technical effects, this utility model provides a hybrid performance damping device combining in-plane bow-shaped support and damper, comprising:

[0006] Steel columns, steel beams, arched energy dissipation braces, conventional braces, and two viscous dampers;

[0007] The steel columns and steel beams form a frame structure by means of high-strength bolts or welding;

[0008] The bow-shaped energy dissipation support and the conventional support are arranged in a cross shape inside the frame structure, and are respectively connected to the frame structure by high-strength bolts or welding to form an integral force-bearing system;

[0009] The two viscous dampers are disposed on the conventional support and are located on both sides of the intersection of the bow-shaped energy dissipation support and the conventional support, respectively, to form a series-arranged energy dissipation path.

[0010] Preferably, the connection between the bow-shaped energy dissipation support and the conventional support at the intersection is achieved by any one of the following methods: welding, adjustable mechanical connection, or non-contact limiting connection.

[0011] Preferably, the bow-shaped energy dissipation support is made of either low-yield-point steel or low-alloy high-strength steel.

[0012] Preferably, the radius of curvature of the bow-shaped energy dissipation support is set to 1 / 5 to 1 / 3 of the span value between the two steel columns.

[0013] Preferably, the spacing between the two viscous dampers should satisfy the following formula L / D≥3 Where L is the pitch and D is the outer diameter of the viscous damper.

[0014] Preferably, the two viscous dampers are connected to the conventional support via detachable flange assemblies.

[0015] The technical effects achieved by this utility model due to the adoption of the above technical solution are as follows:

[0016] By combining the energy dissipation mechanism of bow-shaped energy dissipation supports and viscous dampers, the goal of energy dissipation and vibration reduction is achieved in a coordinated manner. In addition, by adopting standardized prefabricated components and independent connection design, it combines the advantages of industrialized production with the flexibility of on-site assembly, which can simultaneously meet the economic and environmental protection requirements of green buildings as well as the construction convenience requirements for later maintenance, and has broad economic, technical and social promotion value. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the in-plane bow-shaped support and damper hybrid performance damping device according to an embodiment of this utility model.

[0019] Figure 2 This is a front view of the hybrid support of the bow-shaped support and the damper in an embodiment of this utility model.

[0020] Figure 3 This is a schematic diagram of the back of the hybrid support of the bow-shaped support and the damper in an embodiment of this utility model.

[0021] The correspondence between the numbers in the attached diagram is as follows:

[0022] 1- Steel column; 2- Steel beam; 3- Arched energy dissipation brace; 4- Conventional brace; 5- Viscous damper. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1 to 3 As shown, this utility model embodiment provides a planar in-plane bow-shaped support and damper hybrid performance damping device, including: a steel column 1, a steel beam 2, a bow-shaped energy dissipation support 3, a conventional support 4, and two viscous dampers 5; wherein, the steel column 1 and the steel beam 2 form a frame structure by high-strength bolts or welding; the bow-shaped energy dissipation support 3 and the conventional support 4 are arranged in a cross shape inside the frame structure, and are respectively connected to the frame structure by high-strength bolts or welding to form an integral force-bearing system; the two viscous dampers 5 are arranged on the conventional support 4 and are respectively located on both sides of the intersection of the bow-shaped energy dissipation support 3 and the conventional support 4 to form a series-arranged energy dissipation path. It should be noted that the bow-shaped energy dissipation support 3 is arranged along the main force direction of the structure. Its unique geometric nonlinear characteristics provide adjustable initial stiffness. The viscous damper 5 is embedded in series in the force transmission path of the conventional support 4. It achieves efficient energy dissipation through velocity-dependent damping characteristics. The elastic stiffness of the bow-shaped energy dissipation support 3 and the hysteretic performance of the series viscous damper 5 work together to achieve a stiffness-damping complementary effect and form a composite energy dissipation mechanism. Through multiple energy dissipation paths, it effectively improves the overall ductility of the structure, solves the technical problem of difficult coordination and matching of stiffness and damping in traditional energy dissipation and vibration reduction systems, enhances the tensile and compressive bearing capacity of the support system, and improves the overall ductility of the structure.

[0025] Furthermore, in this embodiment, the bow-shaped energy dissipation support can be fabricated using any of the following materials:

[0026] 1) Low yield point steel, with a yield strength ≤235MPa and elongation after fracture ≥30%;

[0027] 2) Low-alloy high-strength steel with a yield strength ≥345MPa and a yield strength ratio ≤0.85. Through optimized selection of material properties (i.e., achieving high efficiency in space utilization and economical material usage through cross-sectional design with specific geometric parameters), both structural ductility and processability are taken into account, and it can be prefabricated in the factory and assembled on site together with conventional support 4.

[0028] Preferably, in this embodiment, the connection between the arc-shaped energy dissipation support 3 and the conventional support 4 at the intersection is achieved by any one of the following methods: welding, adjustable mechanical connection, or non-contact limiting connection. It should be noted that the advantages of using each connection method at the intersection include:

[0029] 1) Rigid connection structure: Welded connection is used to form an integral load-bearing system;

[0030] 2) Semi-rigid connection structure: adopts mechanical connection, adjustable preload, which is conducive to the coordinated work of different energy dissipation mechanisms and easy to disassemble and replace;

[0031] 3) Non-contact construction: The separation distance is controlled by limiting blocks to avoid mutual constraints between supports and ensure that each support can independently exert its superior performance.

[0032] Furthermore, in this embodiment, the bow-shaped energy dissipation support 3 achieves space saving and economy by optimizing the cross-sectional shape (bow-shaped cross-section). Its radius of curvature maintains a predetermined proportional relationship with the span (1 / 5 to 1 / 3 of the span value between the two steel columns 1, preferably 1 / 4). The two viscous dampers 5 are connected to the conventional support 4 through detachable flange assemblies, which facilitates quick maintenance and replacement. The arrangement spacing between the two viscous dampers 5 should meet L / D≥3 (L is the spacing, D is the outer diameter of the viscous damper). The bow-shaped energy dissipation support 3 and the viscous dampers 5 work together to achieve structural lightweighting and maintenance convenience while ensuring energy dissipation and vibration reduction effects. At the same time, it supports the prefabrication of complete standard frame units with beams and columns in the factory to realize industrialized building production; it can also adapt to the construction needs of flexible on-site assembly, meeting the requirements of steel structure for construction convenience and green environmental protection.

[0033] It should be noted that the standardized installation method of the in-plane bow-shaped support and damper hybrid performance damping device of this utility model embodiment includes the following steps:

[0034] 1) First, the prefabrication of the in-plane bow-shaped energy dissipation support 3 and the conventional support 4 is completed in the factory;

[0035] 2) During on-site construction, steel columns 1 are installed according to the design grid, and steel beams 2 are erected between adjacent steel columns 1 to form a basic frame structure unit;

[0036] 3) Then, accurately install the prefabricated bow-shaped energy dissipation support 3 and the conventional support 4. After installation, laser ranging should be performed to ensure that the support axis deviation is ≤L / 500 (L is the support length).

[0037] 4) Finally, the two viscous dampers 5 are connected in series and embedded into the conventional support 4 through the standard flange connection assembly to complete the assembly of the entire energy dissipation and vibration reduction device.

[0038] Example 1: An 8-story steel frame structure adopts this system. The bow-shaped energy dissipation brace is made of Q235LY low yield point steel with a thickness of 12mm. The viscous damper is selected with a velocity index α=0.3 and a rated damping coefficient C=1500kN•s / m.

[0039] All parts not described in this utility model are the same as or can be implemented using existing technology. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this utility model, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hybrid vibration damping device combining in-plane bow-shaped support and damper, characterized in that, include: Steel columns, steel beams, arched energy dissipation braces, conventional braces, and two viscous dampers; among which, The steel columns and the steel beams form a frame structure by high-strength bolts or welding. The bow-shaped energy dissipation support and the conventional support are arranged in a cross shape inside the frame structure, and are respectively connected to the frame structure by high-strength bolts or welding to form an integral force-bearing system; The two viscous dampers are disposed on the conventional support and are located on both sides of the intersection of the bow-shaped energy dissipation support and the conventional support, respectively, to form a series-arranged energy dissipation path.

2. The in-plane bow-shaped support and damper hybrid performance damping device as described in claim 1, characterized in that: The connection between the bow-shaped energy dissipation support and the conventional support at the intersection can be achieved by any one of the following methods: welding, adjustable mechanical connection, or non-contact limiting connection.

3. The in-plane bow-shaped support and damper hybrid performance damping device as described in claim 1, characterized in that: The bow-shaped energy dissipation support is made of either low-yield-point steel or low-alloy high-strength steel.

4. The in-plane bow-shaped support and damper hybrid performance damping device as described in claim 1, characterized in that: The radius of curvature of the bow-shaped energy dissipation support is set to 1 / 5 to 1 / 3 of the span between the two steel columns.

5. The in-plane bow-shaped support and damper hybrid performance damping device as described in claim 1, characterized in that: The spacing between the two viscous dampers should satisfy the following formula. L / D≥3 Where L is the pitch and D is the outer diameter of the viscous damper.

6. The in-plane bow-shaped support and damper hybrid performance damping device as described in claim 1, characterized in that: The two viscous dampers are connected to the conventional support via detachable flange assemblies.

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