A buckling-restrained brace

Abstract

The present invention relates to the technical field of energy dissipation and seismic reduction in civil engineering, and discloses a buckling-restrained brace, comprising: a monitoring assembly, the monitoring assembly includes: a first force-measuring device disposed on the outer sidewall of the energy-dissipating inner core; two connecting mechanisms oppositely arranged, both of the two connecting mechanisms are fixed on the outer sidewall of the energy-dissipating inner core; a displacement detection mechanism disposed between the two connecting mechanisms, the displacement detection mechanism includes an intermediate connecting member, an elastic member and a second force-measuring device, the intermediate connecting member is disposed on one of the connecting mechanisms, the first end of the elastic member is connected to the intermediate connecting member, the second end of the elastic member is connected to the other connecting mechanism, and the second force-measuring device is disposed on the intermediate connecting member. By providing the monitoring assembly, the buckling-restrained brace provided by the present invention can monitor its own working state.

Description

Technical Field

[0001] The present invention relates to the technical field of energy dissipation and seismic reduction in civil engineering, and particularly to a buckling-restrained brace. Background Art

[0002] The buckling-restrained brace consists of an energy-dissipating inner core and an outer restraining member. Compared with traditional steel braces, the buckling-restrained brace can dissipate a large amount of energy input into the building structure by earthquakes through its stable hysteretic capacity. When the buckling-restrained brace is adopted, the seismic response of the building structure can be effectively controlled. Currently, the buckling-restrained brace is being actively applied to the new construction and reinforcement projects of reinforced concrete frame structures. The performance of the buckling-restrained brace has been verified by a large number of tests.

[0003] With the continuous development of information technology and the continuous optimization of computer hardware performance, the traditional construction industry is transforming towards intelligent buildings. Although the traditional buckling-restrained brace has outstanding performance in energy dissipation, when the building structure is subjected to sudden actions such as earthquakes, the buckling-restrained brace generates excessive residual deformation, resulting in a decline in the energy dissipation and seismic reduction performance of the building structure. If the working state of the buckling-restrained brace cannot be monitored, its stress state cannot be monitored in real time, and thus effective feedback cannot be provided for the health assessment of the building structure. Therefore, how to monitor the working state of the buckling-restrained brace has become an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides a buckling-restrained brace capable of monitoring its own working state.

[0005] To achieve the above object, the present invention provides the following solution:

[0006] The present invention provides a buckling-restrained brace, comprising: an energy-dissipating inner core, an outer restraint member, and at least one monitoring component. The outer restraint member wraps around the outside of the energy-dissipating inner core, and the energy-dissipating inner core is slidably connected to the outer restraint member. An accommodation cavity for accommodating the monitoring component is provided on the outer restraint member and penetrates the inner side wall of the outer restraint member, and the monitoring component is arranged in the accommodation cavity. The monitoring component includes: a first force-measuring device arranged on the outer side wall of the energy-dissipating inner core; two connecting mechanisms which are arranged oppositely and both fixed on the outer side wall of the energy-dissipating inner core; a displacement detection mechanism arranged between the two connecting mechanisms. The displacement detection mechanism includes an intermediate connecting member, an elastic member, and a second force-measuring device. The intermediate connecting member is arranged on one of the connecting mechanisms, the first end of the elastic member is connected to the intermediate connecting member, the second end of the elastic member is connected to the other connecting mechanism, and the second force-measuring device is arranged on the intermediate connecting member.

[0007] Preferably, the buckling-restrained brace further includes two magnetic bases. The two connecting mechanisms are respectively connected to the two magnetic bases, and both the two magnetic bases are adsorbed on the outer side wall of the energy-dissipating inner core.

[0008] Preferably, the accommodation cavity penetrates the outer side wall of the outer restraint member, and a sealing cover for opening or closing the accommodation cavity is provided on the outer side wall of the outer restraint member.

[0009] Preferably, the monitoring component further includes a data acquisition instrument, a switch, a cloud server, and a computer which are communicatively connected in sequence. The first force-measuring device and the second force-measuring device are both communicatively connected to the data acquisition instrument.

[0010] Preferably, the elastic member is a spring, the intermediate connecting member is a connecting column, the first force-measuring device and the second force-measuring device are both strain gauges, and the connecting mechanism is a connecting plate.

[0011] Preferably, the number of the monitoring components is multiple, and the multiple monitoring components are uniformly arranged along the circumferential direction of the outer restraint member. A plurality of accommodation cavities are arranged in the circumferential direction of the outer restraint member. The number of the monitoring components is equal to the number of the accommodation cavities, and the two are in one-to-one correspondence.

[0012] Preferably, the cross-section of the energy-dissipating inner core is one of a cross shape, a square shape or a circular shape, and the energy-dissipating inner core includes an inner steel sleeve and a concrete inner core disposed inside the inner steel sleeve. The outer confinement member includes an outer steel sleeve and a concrete outer core disposed inside the outer steel sleeve. The inner steel sleeve and the concrete inner core are both sleeved inside the concrete outer core, and non-bonding materials are provided on both the inner side wall and the outer side wall of the inner steel sleeve so that the inner steel sleeve is slidably connected to both the concrete inner core and the concrete outer core.

[0013] Preferably, the buckling-restrained brace further includes two connection joints, and the two connection joints are respectively disposed at both ends of the energy-dissipating inner core.

[0014] Preferably, the cross-section of the connection joint is a cross shape, slots matching the shape of the connection joint are provided at both ends of the energy-dissipating inner core, a part of the connection joint is disposed in the slots, and the two connection joints are fixedly connected to the energy-dissipating inner core.

[0015] The present invention has achieved the following technical effects compared with the prior art:

[0016] The buckling-restrained brace provided by the present invention includes a monitoring assembly. The monitoring assembly includes: a first force-measuring device disposed on the outer side wall of the energy-dissipating inner core; two connection mechanisms oppositely disposed and both fixed on the outer side wall of the energy-dissipating inner core; a displacement detection mechanism disposed between the two connection mechanisms. The displacement detection mechanism includes an intermediate connector, an elastic member and a second force-measuring device. The intermediate connector is disposed on one of the connection mechanisms, the first end of the elastic member is connected to the intermediate connector, the second end of the elastic member is connected to the other connection mechanism, and the second force-measuring device is disposed on the intermediate connector.

[0017] The working state of the buckling-restrained brace is characterized by the axial force received by the energy-dissipating inner core and the axial deformation of the energy-dissipating inner core. During the specific use process, the first force-measuring device can detect the axial force received by the energy-dissipating inner core, the second force-measuring device can detect the axial force received by the intermediate connector, the axial force received by the intermediate connector is the axial force received by the elastic member, and the axial deformation of the elastic member can be calculated according to the axial force received by the elastic member. The axial deformation of the energy-dissipating inner core is equal to the deformation of the elastic member. Thus, the monitoring assembly can monitor the axial force received by the energy-dissipating inner core and the axial deformation of the energy-dissipating inner core, and further can monitor the working state of the entire buckling-restrained brace. Description of the Drawings

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 Structural schematic diagram of the buckling-restrained brace provided in the embodiment of the present invention;

[0020] Figure 2 Structural schematic diagram of the monitoring component of the buckling-restrained brace provided in the embodiment of the present invention;

[0021] Figure 3 Partial structural schematic diagram of the buckling-restrained brace when the cross-section of the energy-dissipating inner core of the buckling-restrained brace provided in the embodiment of the present invention is cross-shaped;

[0022] Figure 4 Structural schematic diagram of the buckling-restrained brace when the cross-section of the energy-dissipating inner core of the buckling-restrained brace provided in the embodiment of the present invention is square;

[0023] Figure 5 For Figure 4 explosion diagram;

[0024] Figure 6 Structural schematic diagram of the buckling-restrained brace when the cross-section of the energy-dissipating inner core of the buckling-restrained brace provided in the embodiment of the present invention is circular;

[0025] Figure 7 Schematic diagram of the cooperation mode between the buckling-restrained brace provided in the embodiment of the present invention and the building structure.

[0026] Explanation of reference numerals: 100, buckling-restrained brace; 1, energy-dissipating inner core; 101, inner steel casing; 102, concrete inner core; 2, outer restraint member; 201, outer steel casing; 202, concrete outer core; 203, plugging cover; 3, monitoring component; 301, first force-measuring device; 302, connecting mechanism; 303, intermediate connector; 304, elastic member; 305, second force-measuring device; 306, magnetic base; 4, data acquisition instrument; 5, switch; 6, cloud server; 7, computer; 8, connecting joint; 9, building structure. Detailed implementation manners

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0028] The object of the present invention is to provide a buckling-restrained brace capable of monitoring its own working state.

[0029] In order to make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] Referring Figures 1 - 7 As shown, the buckling-restrained brace 100 provided in this embodiment includes: an energy-dissipating inner core 1, an outer confinement member 2, and at least one monitoring component 3. The outer confinement member 2 is wrapped around the outside of the energy-dissipating inner core 1, and the energy-dissipating inner core 1 is slidably connected to the outer confinement member 2. An accommodation cavity for accommodating the monitoring component 3 is provided on the outer confinement member 2 and penetrates the inner side wall of the outer confinement member 2, and the monitoring component 3 is arranged in the accommodation cavity; the monitoring component 3 includes: a first force-measuring device 301, and the first force-measuring device 301 is arranged on the outer side wall of the energy-dissipating inner core 1; two connection mechanisms 302, the two connection mechanisms 302 are arranged oppositely, and the two connection mechanisms 302 are both fixed on the outer side wall of the energy-dissipating inner core 1; a displacement detection mechanism, the displacement detection mechanism is arranged between the two connection mechanisms 302, and the displacement detection mechanism includes an intermediate connecting member 303, an elastic member 304, and a second force-measuring device 305. The intermediate connecting member 303 is arranged on one of the connection mechanisms 302, the first end of the elastic member 304 is connected to the intermediate connecting member 303, the second end of the elastic member 304 is connected to the other connection mechanism 302, and the second force-measuring device 305 is arranged on the intermediate connecting member 303.

[0031] In this embodiment, in order to facilitate the disassembly and assembly of the monitoring component 3, as Figure 2 shown, the buckling-restrained brace 100 further includes two magnetic bases 306. The two connection mechanisms 302 are respectively connected to the two magnetic bases 306, and the two magnetic bases 306 are both adsorbed on the outer side wall of the energy-dissipating inner core 1. The connection mechanism 302 is fixed on the outer side wall of the energy-dissipating inner core 1 by magnetic adsorption. It should be noted that the connection mechanism 302 is not limited to being fixed on the outer side wall of the energy-dissipating inner core 1 by magnetic adsorption, and can also be fixed on the outer side wall of the energy-dissipating inner core 1 by other detachable means. The magnetic adsorption method is only an example.

[0032] Further, the accommodation cavity penetrates through the outer side wall of the outer wrapping and constraining member 2, and a sealing cover 203 for opening or closing the accommodation cavity is provided on the outer side wall of the outer wrapping and constraining member 2. With such a setting, the disassembly and assembly of the monitoring component 3 are more convenient.

[0033] Further, the sealing cover 203 and the outer wrapping and constraining member 2 are connected by bolts.

[0034] In this embodiment, as Figure 1 shown, the monitoring component 3 further includes a data collector 4, a switch 5, a cloud server 6, and a computer 7 that are communicatively connected in sequence. Both the first force measuring device 301 and the second force measuring device 305 are communicatively connected to the data collector 4. Further, both the first force measuring device 301 and the second force measuring device 305 are strain gauges.

[0035] During the specific use process, the strain ε measured by the first force measuring device 301 and the second force measuring device 305 is respectively multiplied by the elastic modulus E and the cross-sectional area A of the energy dissipation inner core 1 and the intermediate connecting member 303 s to obtain the axial forces received by the energy dissipation inner core 1 and the intermediate connecting member 303. Additionally, during specific use, the data collector 4 collects the force information detected by the first force measuring device 301 and the second force measuring device 305, and transmits the collected data to the cloud server 6 through a network cable and the switch 5. The computer 7 calls the preprocessed data in the cloud server 6 for mechanical analysis, including damage diagnosis, status assessment, life prediction, maintenance decision-making, etc.

[0036] In this embodiment, specifically, the elastic member 304 is a spring, the intermediate connecting member 303 is a connecting column, and the connecting mechanism 302 is a connecting plate. Further, the intermediate connecting member 303 is a cylindrical structure, but it is not limited to a cylindrical structure, and only an example is given here.

[0037] In this embodiment, the number of the monitoring components 3 is multiple, and the multiple monitoring components 3 are uniformly arranged along the circumferential direction of the outer wrapping and constraining member 2. A plurality of accommodation cavities are provided in the circumferential direction of the outer wrapping and constraining member 2. The number of the monitoring components 3 is equal to the number of the accommodation cavities, and the two are in one-to-one correspondence. In this embodiment, specifically, the number of both the monitoring components 3 and the accommodation cavities is four, but it is not limited to four, and only an example is given here.

[0038] Refer to Figures 3 - 6As shown, in this embodiment, the cross-section of the energy-dissipating inner core 1 is one of a cross shape, a square shape, or a circular shape, and the energy-dissipating inner core 1 includes an inner steel sleeve 101 and a concrete inner core 102 disposed inside the inner steel sleeve 101. The outer confinement member 2 includes an outer steel sleeve 201 and a concrete outer core 202 disposed inside the outer steel sleeve 201. The inner steel sleeve 101 and the concrete inner core 102 are both sleeved inside the concrete outer core 202. Non-bonding materials are provided on both the inner side wall and the outer side wall of the inner steel sleeve 101 so that the inner steel sleeve 101 is slidably connected to both the concrete inner core 102 and the concrete outer core 202.

[0039] Reference Figures 3 - 6 As shown, in this embodiment, the buckling-restrained brace 100 further includes two connection joints 8. The two connection joints 8 are respectively disposed at both ends of the energy-dissipating inner core 1, and the buckling-restrained brace 100 is connected to the building structure 9 through the connection joints 8. Specifically, the connection joints 8 and the building structure 9 are connected by bolts.

[0040] Furthermore, the cross-section of the connection joint 8 is cross-shaped. Grooves matching the shape of the connection joint 8 are provided at both ends of the energy-dissipating inner core 1. The connection joint 8 is partially disposed in the grooves, and the two connection joints 8 are fixedly connected to the energy-dissipating inner core 1. Specifically, after the connection joint 8 is partially placed in the grooves, the connection joint 8 and the energy-dissipating inner core 1 are fixedly connected by welding. By providing the grooves, the assembly of the connection joint 8 is more convenient, and the connection between the connection joint 8 and the energy-dissipating inner core 1 is more secure.

[0041] In this specification, specific examples are used to elaborate on the principles and implementation manners of the present invention. The descriptions of the above embodiments are only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A buckling-restrained brace, characterized in that, Comprising: An energy-consuming inner core, an outer wrapping restraint member, and at least one monitoring component. The outer wrapping restraint member wraps around the outside of the energy-consuming inner core, and the energy-consuming inner core is slidably connected to the outer wrapping restraint member. An accommodation cavity for accommodating the monitoring component is provided on the outer wrapping restraint member and penetrates the inner side wall of the outer wrapping restraint member, and the monitoring component is arranged in the accommodation cavity; The monitoring component includes: A first force measuring device arranged on the outer side wall of the energy-consuming inner core; Two connecting mechanisms, the two connecting mechanisms are arranged oppositely, and both of the two connecting mechanisms are fixed on the outer side wall of the energy-consuming inner core; A displacement detection mechanism arranged between the two connecting mechanisms. The displacement detection mechanism includes an intermediate connecting member, an elastic member, and a second force measuring device. The intermediate connecting member is arranged on one of the connecting mechanisms, the first end of the elastic member is connected to the intermediate connecting member, the second end of the elastic member is connected to the other connecting mechanism, and the second force measuring device is arranged on the intermediate connecting member.

2. The buckling-restrained brace according to claim 1, characterized in that, It further includes two magnetic bases, the two connecting mechanisms are respectively connected to the two magnetic bases, and both of the two magnetic bases are adsorbed on the outer side wall of the energy-consuming inner core.

3. The buckling-restrained brace according to claim 1, characterized in that, The accommodation cavity penetrates the outer side wall of the outer wrapping restraint member, and a sealing cover for opening or closing the accommodation cavity is provided on the outer side wall of the outer wrapping restraint member.

4. The buckling-restrained brace according to claim 1, characterized in that, The monitoring component further includes a data collector, a switch, a cloud server, and a computer that are communicatively connected in sequence. Both the first force measuring device and the second force measuring device are communicatively connected to the data collector.

5. The buckling-restrained brace according to claim 1, characterized in that, The elastic member is a spring, the intermediate connecting member is a connecting column, both the first force measuring device and the second force measuring device are strain gauges, and the connecting mechanism is a connecting plate.

6. The buckling-restrained brace according to claim 1, characterized in that, The number of the monitoring components is multiple, and the multiple monitoring components are evenly arranged along the circumferential direction of the outer wrapping restraint member. A plurality of accommodation cavities are arranged in the circumferential direction of the outer wrapping restraint member. The number of the monitoring components is equal to the number of the accommodation cavities, and the two are in one-to-one correspondence.

7. The buckling-restrained brace according to claim 1, characterized in that, The cross-section of the energy-consuming inner core is one of a cross shape, a square shape, or a circular shape, and the energy-consuming inner core includes an inner steel sleeve and a concrete inner core arranged inside the inner steel sleeve. The outer wrapping restraint member includes an outer steel sleeve and a concrete outer core arranged inside the outer steel sleeve. The inner steel sleeve and the concrete inner core are both sleeved inside the concrete outer core. Non-bonding materials are arranged on both the inner side wall and the outer side wall of the inner steel sleeve so that the inner steel sleeve is slidably connected to both the concrete inner core and the concrete outer core.

8. The buckling-restrained brace according to claim 1, characterized in that, It further includes two connecting joints, and the two connecting joints are respectively arranged at both ends of the energy-consuming inner core.

9. The buckling-restrained brace according to claim 8, characterized in that, The cross-section of the connecting joint is a cross shape. Grooves matching the shape of the connecting joint are arranged at both ends of the energy-consuming inner core. The connecting joint is partially arranged in the grooves, and both of the two connecting joints are fixedly connected to the energy-consuming inner core.

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