A combined energy dissipation vibration reduction structure system and its implementation method

Abstract

The application discloses a combined energy dissipation and shock absorption structure system and an implementation method thereof. The combined energy dissipation and shock absorption structure system comprises a main structure, a buckling-restrained steel plate shear wall and a load-bearing adjustable energy dissipation support. The main structure comprises a main body and three free limb parts, and the main body and the free limb parts are combined to form an E-shaped structure. The buckling-restrained steel plate shear wall is arranged on the main body and is used for energy dissipation in response to lateral displacement of the main structure in a first direction. The first direction is parallel to the length direction of the free limb part. The load-bearing adjustable energy dissipation support is arranged on the free limb part and is used for energy dissipation in response to lateral displacement of the main structure in a second direction. The second direction is parallel to the length direction of the main body. The application has the advantages that the two kinds of energy dissipation and shock absorption components are combined to be applied, the arrangement is more flexible, the adaptability is stronger, the shock absorption effect is better, the steel amount of the building structure can be reduced, and the economic benefit is obvious.

Description

Technical Field

[0001] This invention relates to the field of civil engineering technology, specifically to a combined energy-dissipating and vibration-damping structural system and its implementation method. Background Technology

[0002] Traditional building structures do not incorporate energy dissipation and vibration reduction components, relying on a "brick-and-mortar" approach to withstand earthquakes, ultimately dissipating seismic energy at the material level through plastic deformation of structural members. The introduction of energy dissipation and vibration reduction components in building structures represents a significant advancement over traditional methods. By using energy dissipators to dissipate or absorb energy, the energy dissipation and vibration reduction mechanism becomes clearer, resulting in more effective protection of structural safety. Energy dissipators primarily function through the elasto-plastic or viscous hysteretic deformation of their internal materials or components. Corresponding products include buckling-restrained braces, metal yield-type energy dissipators, friction energy dissipators, viscous dampers (viscous damping walls), and viscoelastic energy dissipators. Each of these products has its own characteristics and applicable conditions. Current technology generally uses a single energy dissipator for structural energy dissipation and vibration reduction, which is relatively more expensive and more complex to design and construct than traditional buildings. Summary of the Invention

[0003] To overcome the shortcomings of existing technologies, this invention provides a combined energy-dissipating and vibration-damping structural system and its implementation method. By combining two energy-dissipating and vibration-damping components, the arrangement is more flexible, more adaptable, and has a better vibration reduction effect. In addition, it can reduce the amount of steel used in building structures, resulting in significant economic benefits.

[0004] The present invention provides the following technical solution:

[0005] A combined energy-dissipating and vibration-damping structural system includes a main structure, a buckling-resistance steel plate shear wall, and a load-bearing adjustable energy-dissipating brace. The main structure includes multiple walls, the buckling-resistance steel plate shear wall is installed in one of the walls of the main structure, and the load-bearing adjustable energy-dissipating brace is installed in another wall of the main structure.

[0006] As a further improvement to the above technical solution, the horizontal projection of the main structure is E-shaped. The main structure includes a main body and three free limbs, which are combined to form an E-shaped structure. The buckling-resistance steel plate shear wall is provided on the main body to cope with the energy consumption of the main structure's lateral displacement in a first direction, which is parallel to the length direction of the free limbs. The load-bearing adjustable energy-dissipating support is provided on the free limbs to cope with the energy consumption of the main structure's lateral displacement in a second direction, which is parallel to the length direction of the main body.

[0007] As a further improvement to the above technical solution, the main structure includes a steel frame, and the buckling-resistance steel plate shear wall is installed in the steel frame located in the main body, and the buckling-resistance steel plate shear wall is vertically arranged between the upper and lower steel beams of the steel frame.

[0008] As a further improvement to the above technical solution, the buckling-resistant steel plate shear wall includes an energy-dissipating load-bearing steel plate and an embedded steel plate. When energy dissipation and vibration reduction are achieved, the energy-dissipating load-bearing steel plate and the embedded steel plate yield in stages and enter plastic energy dissipation successively.

[0009] As a further improvement to the above technical solution, the load-bearing adjustable energy-dissipating support is installed in the steel structure frame located at the free limb position. The load-bearing adjustable energy-dissipating support includes an inner cylinder, an outer cylinder, and a force transmission device. The inner cylinder is slidably disposed in the outer cylinder. The top end of the outer cylinder is connected to the steel beam on the upper layer of the steel structure frame, and the bottom end of the outer cylinder is connected to the beam-column node of the steel structure frame.

[0010] As a further improvement to the above technical solution, the force transmission device includes a first force transmission device and a second force transmission device. The first force transmission device is disposed in the inner cylinder, and the second force transmission device is disposed in the outer cylinder. When energy dissipation and vibration reduction are achieved, the first force transmission device and the second force transmission device are always subjected to opposite forces.

[0011] The present invention also provides the following technical solutions:

[0012] A method for implementing a combined energy dissipation and vibration reduction structural system includes the following steps:

[0013] S1. Establish an E-shaped main structural model and calculate the parts of the main structure with strong and weak stiffness requirements when subjected to horizontal forces.

[0014] S2. The buckling-resistance steel plate shear wall is set in the part of the main structure where the stiffness requirement is high when subjected to horizontal force, and the load-bearing adjustable energy dissipation brace is set in the part of the main structure where the stiffness requirement is low when subjected to horizontal force.

[0015] S3. The buckling-resistant steel plate shear wall is constructed and installed simultaneously with the main structure, and the load-bearing adjustable energy-dissipating brace is constructed and installed simultaneously with the main structure or at a certain stage after the main structure is installed.

[0016] As a further improvement to the above technical solution, the specific steps for the synchronous construction and installation of the buckling-resistance steel plate shear wall with the main structure are as follows: after the lower steel beams and steel columns of the main structure form a frame, the buckling-resistance steel plate shear wall is installed on the lower steel beams, then the upper steel beams are installed, and so on, with the buckling-resistance steel plate shear wall installed layer by layer along the steel structure frame of the main structure.

[0017] As a further improvement to the above technical solution, when the load-bearing adjustable energy-dissipating support is installed, the steel beams and beam-column nodes on the upper part of the main structure are all pre-set with bracket connectors, and the outer cylinder of the load-bearing adjustable energy-dissipating support is connected to the bracket connectors by bolts.

[0018] The beneficial effects of this invention are:

[0019] 1. Compared with other energy-dissipating and vibration-damping structural systems, the structural system of the present invention, which combines load-bearing adjustable energy-dissipating braces and buckling-resistant steel plate shear walls, not only plays a role in the seismic resistance of the main structure of the building, but also provides damping under horizontal loads, mainly wind loads, effectively dissipating the kinetic energy input from the outside, making the horizontal vibration amplitude of the main structure smaller, and recovering from vibration to a static state more quickly, reducing the adverse effects of vibration on non-structural components (such as building surface and decoration) during normal use of the entire building.

[0020] 2. Compared with other structural systems that use a single type of energy-dissipating and vibration-damping component, this invention uses two types of energy-dissipating and vibration-damping components in combination, which makes the arrangement more flexible and adaptable. It is suitable for setting up wall locations, setting up buckling-resistant steel plate shear walls, and suitable for setting up support locations, using load-bearing adjustable energy-dissipating supports.

[0021] 3. This system can reduce the amount of steel used in the main structure. When the amount of steel used in energy-consuming components in a building is 2% of the total steel used, the amount of steel used in the main structure can be reduced by 10%, resulting in significant economic benefits. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Figure 1 This is an assembly schematic diagram of a combined energy-dissipating and vibration-damping structural system according to the present invention;

[0024] Figure 2 This is a top view of the main structure of the combined energy dissipation and vibration reduction structural system of the present invention;

[0025] Figure 3 This is a schematic diagram of the anti-lateral displacement of a combined energy-dissipating and vibration-damping structural system according to the present invention;

[0026] Figure 4 This is a schematic diagram of the buckling-resistance steel plate shear wall installed in the main structure in this invention;

[0027] Figure 5 This is a schematic diagram of the adjustable load-bearing energy-dissipating support installed in the main structure in this invention;

[0028] Figure 6 This is a schematic diagram of the adjustable load-bearing energy-dissipating support in this invention.

[0029] Reference numerals: 1. Main structure; 11. Main body; 12. Free limb; 13. Steel frame structure; 131. Beam and column; 132. Steel beam; 2. Buckling-resistance steel plate shear wall; 3. Adjustable load-bearing energy-dissipating brace; 31. Outer cylinder; 32. Inner cylinder; 33. First force transmission device; 34. Second force transmission device. Detailed Implementation

[0030] The following will clearly and completely describe the concept, specific structure, and technical effects of the present invention in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are all within the scope of protection of the present invention. Furthermore, all connections / linkages involved in the patent do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this invention can be combined interactively without contradicting each other.

[0031] Reference Figure 1 and Figure 2 This invention relates to a combined energy-dissipating and vibration-damping structural system, comprising a main structure 1, a buckling-resistance steel plate shear wall 2, and a load-bearing adjustable energy-dissipating brace 3. The main structure 1 includes multiple walls, with the buckling-resistance steel plate shear wall 2 installed in one of the walls of the main structure 1, and the load-bearing adjustable energy-dissipating brace 3 installed in another wall of the main structure 1. Specifically, in this embodiment, the horizontal projection of the main structure 1 is E-shaped (in other embodiments, the main structure 1 can have other shapes). The main structure 1 includes a main part 11 and three free limbs 12, which combine to form an E-shaped structure. The buckling-resistance steel plate shear wall 2 is disposed on the main part 11 to absorb energy from lateral displacement of the main structure 1 in a first direction, which is parallel to the length direction of the free limbs 12. The load-bearing adjustable energy-dissipating brace 3 is disposed on the free limbs 12 to absorb energy from lateral displacement of the main structure 1 in a second direction, which is parallel to the length direction of the main part 11.

[0032] In this embodiment, refer to Figure 4 The main structure 1 includes a steel frame 13, and the buckling-resistance steel plate shear wall 2 is installed in the steel frame 13 located at the main body 11 position, and the buckling-resistance steel plate shear wall 2 is vertically arranged between the upper and lower steel beams 132 of the steel frame 13; the load-bearing adjustable energy dissipation support 3 is installed in the steel frame 13 located at the free limb 12 position.

[0033] In a specific embodiment, the buckling-resistance steel plate shear wall 2 includes an energy-dissipating load-bearing steel plate and an embedded steel plate. When energy dissipation and vibration reduction are achieved, the energy-dissipating load-bearing steel plate and the embedded steel plate yield in stages and enter plastic energy dissipation one after the other. In this way, under moderate earthquake action, the energy-dissipating load-bearing steel plate yields before the embedded steel plate, and under strong earthquake action, the embedded steel plate fully yields and dissipates energy.

[0034] In a specific embodiment, refer to Figure 5 The load-bearing adjustable energy-dissipating support 3 includes an outer cylinder 31, an inner cylinder 32, and a force transmission device. The top end of the outer cylinder 31 is connected to the upper steel beam 132 of the steel structure frame 13, and the bottom end of the outer cylinder 31 is connected to the node between the beam-column 131 and the lower steel beam 132 of the steel structure frame 13. In this embodiment, two load-bearing adjustable energy-dissipating supports 3 can be installed in the steel structure frame 13 in a 'V' shape, or one load-bearing adjustable energy-dissipating support 3 can be installed at an angle in the steel structure frame 13. The inner cylinder 32 is slidably disposed in the outer cylinder 31. The force transmission device includes a first force transmission device 33 and a second force transmission device 34. The first force transmission device 33 is disposed in the inner cylinder 32, and the second force transmission device 34 is disposed in the outer cylinder 31. When energy dissipation and vibration reduction are achieved, the first force transmission device 33 and the second force transmission device 34 are always subjected to opposite forces. In this way, the load-bearing adjustable energy dissipation support 3 is subjected to slight multi-wave buckling under pressure, so that the load-bearing capacity of the load-bearing adjustable energy dissipation support 3 is symmetrical and the energy dissipation is full.

[0035] To achieve the energy dissipation capacity of the load-bearing adjustable energy-dissipating brace 3 and the buckling-restrained steel plate shear wall 2, both use low-grade steel (such as Q195, Q215, Q235, Q255, etc.) as core material. The buckling-restrained steel plate shear wall 2 has a square outline, and its thickness matches the beam width of the steel structure frame 13 (the wall thickness is the same as the width of the steel beam 132). The load-bearing adjustable energy-dissipating brace 3 has a long strip outline, with a cross-sectional height greater than its width. Its width matches the beam width of the steel structure frame 13 (the brace width is the same as the width of the steel beam 132), and its length is related to the column spacing of the steel structure frame 13. It can be arranged as a single diagonal brace or as a herringbone shape.

[0036] Embodiments of the present invention also relate to a method for implementing a combined energy-dissipating and vibration-damping structural system, comprising the following steps:

[0037] S1. Establish an E-shaped main structure 1 model and calculate the parts of the main structure 1 with strong and weak stiffness requirements when subjected to horizontal forces.

[0038] S2. The buckling-restrained steel plate shear wall 2 is installed in the part of the main structure 1 where the stiffness requirement is high when subjected to horizontal forces, that is, the buckling-restrained steel plate shear wall 2 is installed in the main body 11 of the E-shaped main structure 1 (located in part I of the E), and refers to Figure 3As shown, the buckling-resistance steel plate shear wall 2 is used to control the inter-story displacement of the main structure 1 in the F1 direction; in addition, the load-bearing adjustable energy-dissipating brace 3 is set in the part of the main structure 1 where the stiffness requirement is weak when subjected to horizontal force, that is, the load-bearing adjustable energy-dissipating brace 3 is set in the free limb 12 of the E-shaped main structure 1. Further, the free limb 12 located at both ends of the main body 11 is the first free limb 12, and the free limb 12 located in the middle of the main body 11 is the second free limb 12. The load-bearing adjustable energy-dissipating brace 3 is set in the two first free limbs 12, as shown in the figure. Figure 3 The load-bearing adjustable energy-dissipating support 3 is used to control the inter-story lateral displacement of the main structure 1 in the F2 direction;

[0039] The two components, S3, buckling-resistance steel plate shear wall 2 and load-bearing adjustable energy dissipation brace 3, are prefabricated in the factory. During the construction and installation of the main structure 1, the buckling-resistance steel plate shear wall 2 is installed synchronously with the main structure 1. The specific steps are as follows: after the lower steel beams 132 and steel columns of the main structure 1 form a frame, the buckling-resistance steel plate shear wall 2 is installed on the lower steel beams 132, then the upper steel beams 132 are installed, and so on, with the buckling-resistance steel plate shear wall 2 installed layer by layer along the steel structure frame 13 of the main structure 1. The load-bearing adjustable energy dissipation brace 3 is installed synchronously with the main structure 1 or at a certain stage after the main structure 1 is installed. Specifically, the upper steel beams 132 of the steel structure frame 13 are pre-installed with bracket connectors 133, and the nodes between the beams and columns 131 of the steel structure frame 13 and the lower steel beams 132 are also pre-installed with bracket connectors 133. The outer cylinder of the load-bearing adjustable energy dissipation brace 3 is connected to the bracket connectors 133 by bolts.

[0040] In the embodiments of the present invention, since the buckling-resistance steel plate shear wall 2 and the load-bearing adjustable energy dissipation support 3 are prefabricated in the factory and assembled on site, the impact on conventional on-site construction is minimal. The anti-corrosion and fireproof coatings are no different from those of ordinary components, and other building finishing methods are simple, without increasing the difficulty of on-site construction. The later maintenance is simple, and it has strong adaptability.

[0041] Building construction codes not only specify energy dissipation and vibration reduction requirements when the main structure 1 of a building experiences significant lateral displacement due to earthquakes, but also require structures to reduce wind-induced vibrations under horizontal loads, primarily wind loads. This invention fully leverages the role of adjustable load-bearing energy-dissipating braces 3 and buckling-restrained steel plate shear walls 2 in reducing structural vibrations under relatively small lateral displacements, as well as the complementary advantages of their combined application. Depending on the structural location and desired effect, flexible selection between these two energy-dissipating and vibration-reducing components is possible. Using only a single type of energy-dissipating component would be limited by building and structural layout, often making implementation difficult in actual engineering projects.

[0042] In this invention, the buckling-restrained steel plate shear wall 2 is positioned in areas of the main structure 1 where high stiffness is required under horizontal forces, while the adjustable energy-dissipating brace 3 is positioned in areas of the main structure 1 where low stiffness is required under horizontal forces. This arrangement is primarily based on two important parameters: elastic stiffness and yield strength. The elastic stiffness of the buckling-restrained steel plate shear wall 2 is 1.5 to 2.5 times (preferably 2 times) that of the adjustable energy-dissipating brace 3. The yield strength of the buckling-restrained steel plate shear wall 2... The yield bearing capacity of the adjustable energy-dissipating support 3 is greater than 1.5 to 2.5 times (preferably 2 times). Therefore, the present invention adopts the combination of buckling-resistant steel plate shear wall 2 and adjustable energy-dissipating support 3, which expands the range of variation of key parameters, including stages with small deformation (inter-story drift angle 1 / 250) and large deformation (inter-story drift angle 1 / 50), to achieve energy dissipation and vibration reduction of the structure. This is a technical indicator that is difficult to achieve with a single type of component, reflecting the unique advantages of the combined application of two types of components.

[0043] The above is a detailed description of the preferred embodiments of the present invention. However, the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A combined energy-dissipating and vibration-damping structural system, comprising a main structure, characterized in that, It also includes buckling-resistance steel plate shear walls and load-bearing adjustable energy-dissipating braces. The main structure includes multiple walls. The buckling-resistance steel plate shear walls are installed in one of the walls of the main structure, and the load-bearing adjustable energy-dissipating braces are installed in the other wall of the main structure. The horizontal projection of the main structure is E-shaped. The main structure includes a main body and three free limbs, which combine to form an E-shaped structure. The buckling-resistance steel plate shear wall is installed in the main body to absorb energy loss due to lateral displacement of the main structure in a first direction, which is parallel to the length direction of the free limbs. The load-bearing adjustable energy-absorbing brace is installed in the free limbs to absorb energy loss due to lateral displacement of the main structure in a second direction, which is parallel to the length direction of the main body. Furthermore, the elastic stiffness of the buckling-resistance steel plate shear wall is 1.5 to 2.5 times that of the load-bearing adjustable energy-absorbing brace, and the yield bearing capacity of the buckling-resistance steel plate shear wall is 1.5 to 2.5 times that of the yield bearing capacity of the load-bearing adjustable energy-absorbing brace.

2. The combined energy-dissipating and vibration-damping structural system according to claim 1, characterized in that, The main structure includes a steel frame, and the buckling-resistance steel plate shear wall is installed in the steel frame located in the main body, and the buckling-resistance steel plate shear wall is vertically arranged between the upper and lower steel beams of the steel frame.

3. The combined energy-dissipating and vibration-damping structural system according to claim 2, characterized in that, The buckling-resistance steel plate shear wall includes an energy-dissipating load-bearing steel plate and an embedded steel plate. When energy dissipation and vibration reduction are achieved, the energy-dissipating load-bearing steel plate and the embedded steel plate yield in stages and enter plastic energy dissipation successively.

4. The combined energy-dissipating and vibration-damping structural system according to claim 2, characterized in that, The load-bearing adjustable energy-dissipating support is installed in the steel structure frame located at the free limb position. The load-bearing adjustable energy-dissipating support includes an outer cylinder, an inner cylinder, and a force transmission device. The inner cylinder is slidably disposed in the outer cylinder. The top end of the outer cylinder is connected to the steel beam of the upper layer of the steel structure frame, and the bottom end of the outer cylinder is connected to the beam-column node of the steel structure frame.

5. The combined energy-dissipating and vibration-damping structural system according to claim 4, characterized in that, The force transmission device includes a first force transmission device and a second force transmission device. The first force transmission device is disposed in the inner cylinder, and the second force transmission device is disposed in the outer cylinder. When energy dissipation and vibration reduction are achieved, the first force transmission device and the second force transmission device are always subjected to opposite forces.

6. A method for implementing a combined energy-dissipating and vibration-damping structural system, used to implement the combined energy-dissipating and vibration-damping structural system as described in any one of claims 1-5, characterized in that, Includes the following steps: S1. Establish an E-shaped main structural model and calculate the parts of the main structure with strong and weak stiffness requirements when subjected to horizontal forces. S2. The buckling-restrained steel plate shear wall is installed in the part of the main structure where the stiffness requirement is high when subjected to horizontal forces, and the load-bearing adjustable energy dissipation brace is installed in the part of the main structure where the stiffness requirement is low when subjected to horizontal forces. The elastic stiffness of the buckling-restrained steel plate shear wall is 1.5 to 2.5 times that of the load-bearing adjustable energy dissipation brace, and the yield bearing capacity of the buckling-restrained steel plate shear wall is 1.5 to 2.5 times that of the yield bearing capacity of the load-bearing adjustable energy dissipation brace. S3. The buckling-resistant steel plate shear wall is constructed and installed simultaneously with the main structure, and the load-bearing adjustable energy-dissipating brace is constructed and installed simultaneously with the main structure or at a certain stage after the main structure is installed.

7. The implementation method according to claim 6, characterized in that, The specific steps for the synchronous construction and installation of the buckling-resistance steel plate shear wall with the main structure are as follows: after the lower steel beams and steel columns of the main structure form a frame, the buckling-resistance steel plate shear wall is installed on the lower steel beams, then the upper steel beams are installed, and so on, installing the buckling-resistance steel plate shear wall layer by layer with the steel structure frame of the main structure.

8. The implementation method according to claim 7, characterized in that, During installation, the adjustable load-bearing energy-dissipating support is installed with bracket connectors pre-installed on the steel beams and beam-column joints of the upper part of the main structure. The outer cylinder of the adjustable load-bearing energy-dissipating support is connected to the bracket connectors by bolts.

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