A prefabricated buckling-resistance energy dissipation brace with both limiting and self-resetting functions

Abstract

The present invention relates to an assembled anti-buckling energy-absorbing support with both limiting and self-resetting functions, comprising a first steel groove, an anti-buckling support assembly and a self-resetting assembly, wherein the first steel groove is arranged on both sides of the anti-buckling support assembly, a self-resetting assembly is arranged in a space enclosed by the first steel groove and the anti-buckling support assembly, and an end of the self-resetting assembly is connected to the anti-buckling support assembly; the present invention consumes energy together through the anti-buckling support assembly and the self-resetting assembly, and when the deformation amount of the energy-absorbing inner core reaches the limit position after yielding, the energy-absorbing inner core and the self-resetting assembly jointly provide axial stiffness to realize the limiting function, thereby preventing the entire energy-absorbing support from exceeding the limit displacement during the shock absorption process.

Description

Technical Field

[0001] The present invention relates to the technical field of building shock absorption, and in particular to an assembled buckling-resistance energy-absorbing support with both position limiting and self-resetting functions. Background Art

[0002] At present, earthquake resistance of building structures is generally achieved by setting up seismic isolation layers or increasing structural damping to dissipate seismic energy. Buckling-resistance braces, as a new type of support, are usually composed of three parts: an internal energy-absorbing core material, an external restraining member, and a non-bonded isolation material between the two. They have excellent energy-absorbing capacity and can significantly reduce seismic damage to the main structure.

[0003] However, the traditional buckling-resistance brace only dissipates energy through the elastic-plastic energy dissipation of the energy-dissipating inner core, which is less adaptable to earthquake magnitudes and does not fully utilize the axial stiffness of the entire structure. Moreover, it cannot return to the initial position after yielding, which makes the main structure have a large residual deformation after the earthquake, increasing the difficulty of post-earthquake repair of the structure. In order to solve the above problems, some scholars in the prior art have introduced a self-reset system to reduce the residual deformation of the buckling-resistance brace, thereby reducing the residual deformation of the main structure after the earthquake, while retaining the good energy dissipation capacity of the buckling-resistance brace. However, most of the self-reset devices currently proposed do not have a limit function. When the building structure encounters an earthquake and special earthquake motion beyond the design, even if the buckling-resistance brace device is provided, the overall structure may still exceed the displacement limit, resulting in functional or safety problems. In addition, when the components are damaged after the earthquake, they generally need to be replaced as a whole, which is costly and complex in construction technology. Therefore, it is of great practical significance to design a buckling-resistance brace device that provides buckling energy dissipation capacity and self-reset capacity within the expected design, provides limit protection when encountering an earthquake beyond the expected earthquake, and is convenient for post-earthquake maintenance and replacement of local parts, and has comprehensive limit and self-reset capabilities and adopts an assembled buckling-resistance brace device. Summary of the invention

[0004] In view of the problems existing in the prior art, the purpose of the present invention is to provide an assembled anti-buckling energy-absorbing support with both limiting and self-resetting functions. When the building structure vibrates, the anti-buckling support assembly and the self-resetting assembly jointly consume energy. After the energy-absorbing inner core in the anti-buckling support assembly yields, the deformation reaches the limit position. The energy-absorbing inner core and the self-resetting assembly jointly provide axial stiffness to realize the limiting function, thereby preventing the entire energy-absorbing support from exceeding the displacement limit during the shock absorption process and ensuring safe use. The self-resetting assembly drives the entire energy-absorbing support to reset during the resetting process, and can also reduce the post-earthquake residual deformation of the building structure and reduce the difficulty and cost of post-earthquake repair.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] The present invention proposes an assembled anti-buckling energy-absorbing support with both limiting and self-resetting functions, comprising a first steel trough, an anti-buckling support assembly and a self-resetting assembly. The first steel trough is arranged on both sides of the anti-buckling support assembly, and a self-resetting assembly is arranged in the space enclosed by the first steel trough and the anti-buckling support assembly. The end of the self-resetting assembly is connected to the anti-buckling support assembly.

[0007] Preferably, the anti-buckling support assembly includes a first steel plate and a second steel plate, two square steel tubes are arranged above and below the first steel plate and an energy-absorbing inner core is arranged between the two square steel tubes, second steel grooves are arranged on both sides of the energy-absorbing inner core, the first steel groove is embedded in the second steel groove, and the first steel groove and the second steel groove are arranged.

[0008] Preferably, the square steel tube is filled with concrete, and the space between the square steel tube and the energy-absorbing inner core is filled with non-bonding material.

[0009] Preferably, both ends of the energy-absorbing inner core are connecting sections, the middle part is a yielding section, a limiting section is arranged between the connecting section and the yielding section, the connecting section, the yielding section and the limiting section are integrated, and the limiting section is connected to the second steel trough.

[0010] Preferably, limiting wings are provided on both sides of the limiting section, and limiting grooves are provided on the side walls of the second steel trough. The limiting wings pass through the limiting grooves and are plugged into the side walls of the second steel trough, and the length of the connection between the limiting groove and the limiting wing is less than the length of the limiting groove.

[0011] Preferably, the self-resetting component is arranged in the space enclosed by the first steel groove and the second steel groove, and the self-resetting component includes a screw rod, the end of the screw rod is connected to the energy-absorbing inner core connecting section through an angle steel and a concave steel plate, and a disc spring is sleeved on the screw rod. Disc spring baffles that can slide on the screw rod are arranged at both ends of the disc spring, and limiting nuts are arranged on the outer sides of the disc spring baffles.

[0012] Preferably, the self-resetting component can be arranged into two groups, the upper and lower ends of the energy-absorbing inner core connecting section are provided with concave steel plates, the screw end of the upper self-resetting component is fixedly connected to the concave steel plate at the upper end of the connecting section through an angle steel, and the screw end of the lower self-resetting component is fixedly connected to the concave steel plate at the lower end of the connecting section through an angle steel.

[0013] Preferably, a plurality of sets of disc springs may be arranged on the screw rod.

[0014] Preferably, the side walls of the first steel groove and the second steel groove are provided with limit baffles, the position of the limit baffles corresponds to the position of the limit nut, and when the disc spring is at its original length, the inner side of the disc spring baffle contacts the end of the disc spring, and the outer side contacts the limit baffle.

[0015] Preferably, the limiting wing is trapezoidal, the upper base thereof passes through the limiting groove, the lower base is fixedly connected to the connecting section, and the angle between the waist of the limiting wing and the lower base is 60°.

[0016] Compared with the prior art, the advantages of the present invention are:

[0017] (1) The present invention uses the anti-buckling support assembly and the self-resetting assembly to jointly dissipate energy. When the deformation of the energy-absorbing inner core reaches the limit position after yielding, the energy-absorbing inner core and the self-resetting assembly jointly provide axial stiffness to achieve a limiting function, thereby preventing the entire energy-absorbing support from exceeding the limit displacement during the shock absorption process, thereby ensuring safe use.

[0018] (2) The self-resetting component of the present invention uses disc springs as reset materials, which have stable performance and strong deformation ability. It can provide self-resetting ability for energy-absorbing supports under tension and compression, which can reduce the post-earthquake residual deformation of the building structure and reduce the difficulty and cost of post-earthquake repair.

[0019] (3) The overall structure of the present invention is detachable, and the self-resetting assembly is connected to the anti-buckling support assembly through angle steel and concave steel plate. After the overall structure is damaged, it can be quickly replaced or repaired, thereby reducing the support cost and subsequent maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 for Figure 1 Sectional view at AA in the middle;

[0022] Figure 3 This is a schematic diagram of the assembly structure of the anti-buckling support assembly of the present invention;

[0023] Figure 4 It is a schematic diagram of the structure of the energy dissipation inner core of the present invention;

[0024] Figure 5 This is a schematic diagram of the assembly structure of the self-resetting component of the present invention;

[0025] Figure 6 It is a motion structure diagram of the self-resetting component of the present invention;

[0026] Figure numerals: 1 first steel trough, 2 anti-buckling support assembly, 21 first steel plate, 22 second steel plate, 23 square steel pipe, 24 energy-absorbing inner core, 241 connecting section, 242 limiting section, 243 yield section, 244 limiting wing, 25 second steel trough, 26 limiting groove, 3 self-resetting assembly, 31 screw, 32 disc spring, 33 disc spring baffle, 34 limiting nut, 4 angle steel, 5 concave steel plate, 6 limiting baffle. DETAILED DESCRIPTION

[0027] 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.

[0028] refer to Figure 1 The present invention proposes an assembled anti-buckling energy dissipation support with both limiting and self-resetting functions, including a first steel trough 1, an anti-buckling support assembly 2 and a self-resetting assembly 3. The first steel trough 1 is arranged on both sides of the anti-buckling support assembly 2, and the self-resetting assembly 3 is arranged in the space enclosed by the first steel trough 1 and the anti-buckling support assembly 2. The end of the self-resetting assembly 3 is connected to the anti-buckling support assembly 2.

[0029] When the building moves, the anti-buckling support assembly 2 in this embodiment yields and consumes energy, and the self-resetting assembly 3 compresses and consumes energy. When the anti-buckling support assembly 2 yields and the deformation reaches a certain degree, the anti-buckling support assembly 2 and the self-resetting assembly 3 jointly provide axial stiffness to achieve a limiting effect, and then the entire energy-consuming support is reset by the self-resetting assembly 3.

[0030] Specifically, the anti-buckling support assembly 2 includes a first steel plate 21 and a second steel plate 22, two square steel tubes 23 are arranged between the first steel plate 21 and the second steel plate 22, and a straight energy-absorbing inner core 24 is arranged between the two square steel tubes 23. The square steel tubes 23 are filled with concrete, and the square steel tubes 23 and the energy-absorbing inner core 24 are filled with non-bonding materials. Second steel grooves 25 are arranged on both sides of the energy-absorbing inner core 24, and the two ends of the energy-absorbing inner core 24 are connecting sections 241, and the middle part is a yielding section 243. The connecting section 241 is provided at the first and second ends of the energy-absorbing inner core 24, and the middle part is a yielding section 243. A limiting section 242 is arranged between the section 241 and the yield section 243. The connecting section 241, the yield section 243 and the limiting section 242 are integrated. Limiting wings 244 are arranged on both sides of the limiting section 242. A limiting groove 26 is arranged on the side wall of the second steel groove 25. The limiting wings 244 pass through the limiting groove 26 and are plugged into the side wall of the second steel groove 25. The length of the limiting groove 26 and the limiting wing 255 at the connection point is less than the length of the limiting groove 26. The connecting section 241 is fixedly connected to the end of the self-resetting component 3 through the angle steel 4 and the concave steel plate 5.

[0031] When the building is subjected to external load, the yield section 243 of the I-shaped energy-absorbing inner core 24 in this embodiment bears the external load to produce tensile or compressive deformation, and consumes energy through deformation. As the load gradually increases, the energy-absorbing inner core 24 reaches a yield state, and the tensile or compressive deformation of the energy-absorbing inner core 24 reaches the limit length of the limit groove. The limit wing 244 contacts the end of the limit groove 26 and is stuck, realizing the limit function, preventing the energy-absorbing inner core 24 from yielding and causing the overall structure to produce excessive displacement. Regardless of whether the yield section is under tension or compression, the self-resetting component 3 is in a compressed state and produces elastic compression deformation. When the load action ends, the entire energy-absorbing support returns to its initial state under the action of the elastic restoring force of the self-resetting component 3.

[0032] Specifically, the self-resetting component 3 is arranged in the space enclosed by the first steel groove 1 and the second steel groove 25, and the self-resetting component 3 includes a screw rod 31, and the end of the screw rod 31 is connected to the connecting section 241 of the energy-absorbing inner core 24 through an angle steel 4 and a concave steel plate 5. A disc spring 32 is sleeved on the screw rod 31, and disc spring baffles 33 that can slide on the screw rod 31 are arranged at both ends of the disc spring 32, and limiting nuts 34 are arranged on the outer sides of the disc spring baffles 33.

[0033] In this embodiment, the yield section drives the screw rod 31 to move under tension or compression, and the disc spring baffle 33 compresses the disc spring 32 due to inertia. When the load ends, the disc spring 32 returns to its original length, driving the entire energy-absorbing support to return to its initial state.

[0034] Furthermore, the self-resetting component can be arranged into two groups, the upper and lower ends of the connecting section 241 of the energy-absorbing inner core 24 are provided with concave steel plates 5, the ends of the upper group of screws 31 are fixedly connected to the concave steel plate 4 at the upper end of the connecting section 241 through the angle steel 4, and the ends of the lower group of screws 31 are fixedly connected to the concave steel plate 5 at the lower end of the connecting section 241 through the angle steel 4. The two groups of self-resetting components 3 can further enhance the shock-absorbing effect and self-resetting effect of the energy-absorbing support. By connecting the angle steel 4 and the concave steel plate 5, it is convenient for all parts to be disassembled during post-earthquake maintenance or parts replacement, so that damaged parts can be replaced quickly and conveniently, while other intact parts can be retained.

[0035] Furthermore, a plurality of disc springs 32 may be provided on the screw rod 31 .

[0036] Furthermore, a limit baffle 6 is correspondingly arranged on the side walls of the first steel groove 1 and the second steel groove 25. The position of the limit baffle 6 is staggered with the limit groove 26. When the disc spring 32 is at its original length, the inner side of the disc spring baffle 33 contacts the end of the disc spring 32, and the outer side contacts the limit baffle 6. The existence of the limit baffle 6 facilitates the installation of the self-resetting component 3, and at the same time has a double insurance function to prevent the limit nut 34 from loosening and failing to limit the disc spring baffle 33.

[0037] Furthermore, the limiting wing 244 is trapezoidal, and its upper bottom passes through the limiting groove 26, is located in the space enclosed by the first steel groove 1 and the second steel groove 25, and does not affect the movement of the self-resetting component 3, and the lower bottom is fixedly connected to the connecting section 241. The angle between the waist of the limiting wing 244 and the lower bottom is 60°, which ensures that the energy-absorbing inner core 24 and the second steel groove 25 are stably connected when force is applied, and the limiting function is realized by utilizing the axial stiffness of the overall structure.

[0038] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. An assembled buckling-resistance energy dissipation support with both limiting and self-resetting functions, characterized in that: It comprises a first steel groove (1), an anti-buckling brace assembly (2) and a self-resetting assembly (3), wherein the first steel groove (1) is arranged on both sides of the anti-buckling brace assembly (2), the self-resetting assembly (3) is arranged in a space enclosed by the first steel groove (1) and the anti-buckling brace assembly (2), and the end of the self-resetting assembly (3) is connected to the anti-buckling brace assembly (2); The anti-buckling support assembly (2) comprises a first steel plate (21) and a second steel plate (22); two square steel tubes (23) are arranged above and below the first steel plate (21) and the second steel plate (22); an energy-absorbing inner core (24) is arranged between the two square steel tubes (23); second steel grooves (25) are arranged on both sides of the energy-absorbing inner core (24); the first steel groove (1) is embedded in the second steel groove (25); and the notches of the first steel groove (1) and the second steel groove (25) are opposite to each other; The energy dissipation inner core (24) has connecting sections (241) at both ends and a yielding section (243) in the middle. A limiting section (242) is provided between the connecting section (241) and the yielding section (243). The connecting section (241), the yielding section (243) and the limiting section (242) are integrated. The limiting section (242) is connected to the second steel channel (25). Limiting wings (244) are arranged on both sides of the limiting section (242), and a limiting groove (26) is arranged on the side wall of the second steel groove (25). The limiting wings (244) pass through the limiting groove (26) and are plugged into the side wall of the second steel groove (25), and the length of the plugging point between the limiting groove (26) and the limiting wings (244) is less than the length of the limiting groove (26); The self-resetting component (3) is arranged in a space enclosed by the first steel groove (1) and the second steel groove (25), and the self-resetting component (3) comprises a screw rod (31), the end of which is connected to the connecting section of the energy-absorbing inner core (24) through an angle steel (4) and a concave steel plate (5), a disc spring (32) is sleeved on the screw rod (31), and disc spring baffles (33) that can slide on the screw rod are arranged at both ends of the disc spring (32), and limit nuts (34) are arranged on the outer sides of the disc spring baffles; The side walls of the first steel groove (1) and the second steel groove (25) are provided with a limit baffle (6), the position of the limit baffle (6) corresponds to the position of the limit nut (34), and when the disc spring (32) is at its original length, the inner side of the disc spring baffle (33) contacts the end of the disc spring (32), and the outer side contacts the limit baffle (6).

2. According to claim 1, the assembled buckling-resistance energy dissipation support with both limit and self-reset functions is characterized in that: The square steel pipe (23) is filled with concrete, and the space between the square steel pipe (23) and the energy-absorbing inner core (24) is filled with a non-bonding material.

3. According to claim 1, the assembled buckling-resistance energy dissipation support with both limit and self-reset functions is characterized in that: The self-resetting assembly (3) is arranged in two groups, upper and lower, and the upper and lower ends of the connecting section (241) of the energy-absorbing inner core (24) are both provided with concave steel plates (5). The end of the screw rod (31) of the upper self-resetting assembly (3) is fixedly connected to the concave steel plate (5) at the upper end of the connecting section (241) via an angle steel (4), and the end of the screw rod (31) of the lower self-resetting assembly (3) is fixedly connected to the concave steel plate (5) at the lower end of the connecting section (241) via an angle steel (4).

4. According to claim 1, the assembled buckling-resistance energy dissipation support with both limiting and self-resetting functions is characterized in that: A plurality of disc springs (32) are arranged on the screw rod (31).

5. According to claim 1, the assembled buckling-resistance energy dissipation support with both limiting and self-resetting functions is characterized in that: The limiting wing (244) is trapezoidal, with its upper base penetrating the limiting groove (26), and its lower base fixedly connected to the connecting section (241), and the included angle between the waist of the limiting wing (244) and the lower base is 60°.

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