CN109853773B - Multi-stage and multi-stage energy-consumption composite buckling-restrained brace and mounting method - Google Patents
Multi-stage and multi-stage energy-consumption composite buckling-restrained brace and mounting method Download PDFInfo
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Abstract
The multi-stage and multi-stage energy-consumption composite buckling restrained brace comprises a composite energy-consumption restraining rod body 1 and hinged supports 2, wherein the composite energy-consumption restraining rod body 1 is of a rod piece structure with a rectangular cross section, and the hinged supports 2 are hinged to two ends of the composite energy-consumption restraining rod body 1. The hinged support 2 comprises a bottom plate and an ear plate, wherein mounting holes are formed in the periphery of the bottom plate and can be in bolted connection with reserved anchor bolt holes at column ends through high-strength bolts; the middle part of the lug plate is provided with a hole, and the diameter of the hole is connected with the arms of the shearing loading rods 4 at the two ends of the composite energy consumption restraint rod body 1 through high-strength pins. The composite energy consumption restraint rod body 1 comprises: the device comprises a shearing restraint steel sleeve 3, a shearing loading rod 4, a foam metal energy consumption plate 5, a memory alloy spring 6, an arc-shaped extrusion steel plate 7, a memory alloy ball 8, a sealing rubber ring 9 and a sleeve sealing cover plate 10. The energy-saving self-recovery energy-saving energy-.
Description
Technical Field
The invention relates to a damping device, in particular to a multistage-multistage energy-consumption composite buckling restrained brace and an installation method, and belongs to the technical field of damping devices.
Background
In 34 province cities of administrative regions in China, at least 21 cities have earthquake-induced active faults and potential risks of near-field strong earthquakes; the disastrous earthquake threat is faced in more than 2000 towns all over the country. The economic high-speed development generates a clear contradiction between the safety requirement and the serious earthquake disaster threat faced by vast cities in China, and particularly, the contradiction is more excited due to huge casualties and property loss caused by the recent large earthquakes Wenchuan earthquake, the Yushu earthquake and the Ludian earthquake in China.
Buckling restrained brace (also called buckling restrained brace, non-buckling brace, etc.) is an element which consumes energy through the axial tension and compression of steel. The buckling restrained brace comprises an anti-buckling support inner core and a restraining component, wherein the restraining component is used for preventing the inner core from buckling integrally and restraining the inner core from buckling locally when the inner core is pressed, so that the inner core can fully yield in a full section under the action of tensile force and pressure. The buckling-restrained brace is mainly installed at a position with larger structural vibration displacement, the effect of reducing the structural displacement is achieved through energy consumption, and the buckling-restrained brace is widely used in a frame structure of a high earthquake intensity area due to excellent earthquake-resistant energy consumption performance.
The foam metal has certain strength, ductility and additivity, and can be used as a light structural material. The material can withstand large compressive strains under almost constant stress, so that a large amount of energy is absorbed without generating high stress.
The memory alloy will deform under the action of external force, and can recover its original shape under a certain temp. condition when the external force is removed. In addition, the memory alloy also has the advantages of no magnetism, wear resistance, corrosion resistance and no toxicity, is widely applied and is a high-quality damping material.
At present, the traditional buckling restrained brace which is most widely used in engineering and represented by concrete filling and full-section yield energy consumption achieved by stretching and extruding a soft steel core is mainly used for absorbing earthquake energy by stretching or compressing the soft steel core inside, cannot achieve multi-stage-multi-stage energy consumption, does not have the capability of recovering deformation, cannot be maintained, belongs to one-time use, and does not accord with the green environmental-friendly sustainable green building development concept; and the damping of the traditional mild steel buckling restrained brace can not be adjusted, the self weight of the brace is large, redundant load is easily generated on a building structure, and the traditional mild steel buckling restrained brace is not beneficial to wide application of the same building. The invention provides a multistage-multistage energy consumption composite buckling restrained brace, which aims to solve the problems that the traditional buckling restrained brace is easy to cause environmental pollution, has large dead weight and single energy consumption form and cannot consume energy in multiple stages.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the multi-stage and multi-stage energy-consumption composite buckling restrained brace, which can be widely applied to the technical fields of building structures, bridges, non-structural members and the like, and has the characteristics of environmental protection, uniform energy consumption, multi-stage energy consumption and strong self-recovery capability.
The technical scheme adopted by the invention for solving the technical problem is as follows: a multi-stage-multistage energy-consumption composite buckling restrained brace comprises a composite energy-consumption restraining rod body 1 and hinged supports 2, wherein the composite energy-consumption restraining rod body 1 is of a rod piece structure with a rectangular cross section, and the hinged supports 2 are hinged to two ends of the composite energy-consumption restraining rod body 1; the hinged support 2 comprises a bottom plate and an ear plate; mounting holes are formed in the periphery of the bottom plate and are in bolted connection with reserved anchor bolt holes at column ends through high-strength bolts; the middle part of the lug plate is provided with a hole which is connected with the arms of the shear loading rod 4 at the two ends of the composite energy consumption restraint rod body 1 through high-strength pins; the composite energy consumption restraint rod body 1 comprises: the shear restraint steel sleeve 3, the sealing rubber ring 9 and the sleeve sealing cover plate 10; the shear restraint steel sleeve 3 is a cuboid steel sleeve, and a shear loading rod 4, a foam metal energy dissipation plate 5, a memory alloy spring 6, an arc extrusion steel plate 7 and a memory alloy ball 8 can be arranged in a rectangular channel in the sleeve; the inner grooves in the cylinder walls at the two ends of the shearing constraint steel sleeve 3 are respectively provided with two clamping grooves, and the fixing plates of the memory alloy spring 6 are inserted through the clamping grooves; the cylinder walls at two ends of the shearing restraining steel sleeve 3 are provided with rectangular grooves for accommodating a 4-lever arm of a shearing loading rod; a sealing rubber ring 9 is wound at the gap part between the rectangular groove and the lever arm of the shearing loading lever 4; semi-rectangular grooves are respectively formed in the upper and lower parts of the inner channel of the shearing restraint steel sleeve 3, the semi-rectangular grooves in the shearing restraint steel sleeve 3 are spliced with the semi-rectangular grooves of the shearing loading rod 4 to form rectangular grooves, and the foamed metal energy consumption plate 5 is spliced; the depth of the semi-rectangular groove in the shear restraint steel sleeve 3 is the same as the height of the metal energy consumption plate 5 and the shear loading rod 4; bolt mounting holes 11 are formed in the periphery of the shear restraint steel sleeve 3, and the sleeve sealing cover plate 10 is a cuboid steel plate with the bolt mounting holes 11 distributed in the periphery; the sleeve sealing cover plate 10 is bolted with the shear-constraining steel sleeve 3 through bolt mounting holes 11.
Compared with the prior art, the invention has the following advantages and effects:
1. the invention has the multi-stage energy consumption effect, and when an earthquake comes, the first-stage energy consumption can be carried out by shearing the foam metal energy consumption plate and extruding the memory alloy spring; when the interlayer displacement is overlarge, the memory alloy ball is extruded by the arc-shaped extrusion steel plate to consume energy at the second stage; when the interlayer displacement is extremely large, the arc-shaped extruded steel plate can be broken by pulling to achieve full-section yield, and the energy consumption of the third stage is carried out.
2. The invention has good self-recovery effect, and adopts memory alloy balls, memory alloy springs and arc-shaped extrusion steel plates which are all recoverable deformation materials; after the buckling restrained brace absorbs energy, the buckling restrained brace can restore and deform, and has stronger durability compared with the traditional buckling restrained brace.
3. The main energy consumption materials of the invention are respectively a memory alloy spring, a memory alloy ball and a foam metal energy consumption plate, and the energy consumption materials are light materials, thereby effectively reducing the self weight of the structure compared with the traditional buckling restrained brace.
4. The invention has stronger durability, the foam metal energy dissipation plate can bear great shearing strain under the action of constant stress, so a great deal of energy is absorbed without generating high stress, and the damage to the inside of the supporting member is less. After an earthquake, the sleeve cover plate can be opened, and the internal damaged foam metal energy dissipation plate can be replaced, so that the anti-buckling support disclosed by the invention is in accordance with the development concept of a green, environment-friendly and sustainable building structure compared with the problem that the traditional anti-buckling support is large in damage and deformation and can be used at one time.
5. Compared with the problem that the traditional support damping is not adjustable, the damping of the invention can be adjusted, and the invention can increase or reduce the number of foam metal energy dissipation plates and memory alloy balls according to the damping requirement of the reinforced part of the actual structure so as to achieve the effect of adjusting the support damping.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic plan view of a multi-stage and multi-stage energy-consumption composite buckling restrained brace;
FIG. 2 is a sectional view of a multi-stage and multi-stage energy-consuming composite buckling restrained brace;
FIG. 3 is a sectional view of a multi-stage and multi-stage energy-consuming composite buckling restrained brace;
FIG. 4 is a schematic plan view of a shear constraining steel sleeve construction;
FIG. 5 is a partial schematic plan view of a shear-constraining steel sleeve;
FIG. 6 is a partial schematic view of a shear loading bar configuration;
FIG. 7 is a partial schematic view of a shear loading bar configuration;
FIG. 8 is a schematic diagram of a foamed metal energy dissipating plate;
FIG. 9 is a schematic plan view of a memory alloy spring structure;
FIG. 10 is a schematic view of a curved extruded steel sheet structure;
FIG. 11 is a schematic plan view of a memory alloy ball structure;
FIG. 12 is a schematic plan view of the sealing cover structure of the sleeve;
fig. 13 is a schematic view of the multi-stage and multi-stage energy-consuming composite buckling restrained brace in practical use.
Description of reference numerals: 1. the composite energy consumption restraining rod comprises a composite energy consumption restraining rod body, 2, a hinged support, 3, a shearing restraining steel sleeve, 4, a shearing loading rod, 5, a foam metal energy consumption plate, 6, a memory alloy spring, 7, an arc-shaped extrusion steel plate, 8, a memory alloy ball, 9, a sealing rubber ring, 10, a sleeve sealing cover plate, 11 and a bolt mounting hole.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings, in order that the present disclosure may be more fully understood and fully conveyed to those skilled in the art. While the exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the invention is not limited to the embodiments set forth herein.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Meanwhile, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "connected" and "connected" should be interpreted broadly, for example, as being fixedly connected, detachably connected, or integrally connected; the connection can be mechanical connection or electrical connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
A multi-stage and multi-stage energy-consuming composite buckling restrained brace, as shown in fig. 1-13, comprising: the composite energy consumption restraining rod body 1 and the hinged supports 2 are hinged at two ends of the composite energy consumption restraining rod body 1; the composite energy consumption restraint rod body 1 is of a rod piece structure with a rectangular cross section.
The hinged support 2 comprises a bottom plate and an ear plate, wherein mounting holes are formed in the periphery of the bottom plate and can be in bolted connection with reserved anchor bolt holes at column ends through high-strength bolts; the middle part of the lug plate is provided with a hole which is connected with the arms of the shearing loading rods 4 at the two ends of the composite energy consumption restraining rod body 1 through high-strength pins; the hinged support 2 is made of hard steel.
The composite energy consumption restraint rod body 1 comprises: the device comprises a shearing restraint steel sleeve 3, a shearing loading rod 4, a foam metal energy consumption plate 5, a memory alloy spring 6, an arc-shaped extrusion steel plate 7, a memory alloy ball 8, a sealing rubber ring 9 and a sleeve sealing cover plate 10.
The shear restraint steel sleeve 3 is a cuboid steel sleeve, and a shear loading rod 4, a foam metal energy dissipation plate 5, a memory alloy spring 6, an arc extrusion steel plate 7 and a memory alloy ball 8 can be arranged in a rectangular channel in the sleeve; the inner grooves in the cylinder walls at the two ends of the shearing constraint steel sleeve 3 are respectively provided with two clamping grooves, and a memory alloy spring 6 fixing plate can be inserted through the clamping grooves; rectangular grooves are formed in the cylinder walls of two ends of the shearing restraining steel sleeve 3 and used for accommodating a 4-lever arm of the shearing loading rod, the size of the cross section of each groove is 2mm larger than that of the 4-lever arm of the shearing loading rod, and a sealing rubber ring 9 is wound in a gap between each rectangular groove and the 4-lever arm of the shearing loading rod; semi-rectangular grooves are respectively formed in the upper and lower parts of the inner channel of the shearing restraint steel sleeve 3, the semi-rectangular grooves in the shearing restraint steel sleeve 3 are spliced with the semi-rectangular grooves of the shearing loading rod 4 to form rectangular grooves, and the foamed metal energy consumption plate 5 is spliced; the depth of the semi-rectangular groove in the shear restraint steel sleeve 3 is the same as the height of the metal energy consumption plate 5 and the shear loading rod 4; bolt mounting holes 11 are formed in the periphery of the shear restraint steel sleeve 3 and can be in bolted connection with a sleeve sealing cover plate 10 through the bolt mounting holes 11; the shearing constraint steel sleeve 3 is made of hard steel.
The shearing loading rod 4 comprises a rod arm, a loading plate and a shearing rod, the cross section of the rod arm of the shearing loading rod 4 is rectangular, and the size of the cross section of the rod arm is 2mm smaller than that of the rectangular grooves in the cylinder walls at the two ends of the shearing constraint steel sleeve 3; the end part of the lever arm is provided with a hole which can be hinged with the hinged support 2 through a high-strength pin bolt; a clamping groove is formed in the connecting surface of a loading plate of the shearing loading rod 4 and a rod arm and used for inserting a fixing plate of a memory alloy spring 6; the size of the section of the shear loading rod 4 is smaller than that of the rectangular channel of the restraining steel sleeve 3 by 2 mm; semi-rectangular grooves are formed in the upper surface and the lower surface of a shear rod of the shear loading rod 4, the semi-rectangular grooves of the shear loading rod 4 are spliced with semi-rectangular grooves in a shear restraining steel sleeve 3 to form rectangular grooves, and foam metal energy dissipation plates 5 are inserted; the end part of the shear loading rod 4 is provided with two L-shaped clamping grooves which are symmetrically arranged up and down and used for being inserted with the arc-shaped extrusion steel plate 7; the shearing loading rod 4 and the shearing rod 5 are the same in height; the shearing loading rod 4 is made of hard steel.
The foam metal energy dissipation plate 5 is a cuboid metal plate, holes are formed in the surface and the interior of the foam metal energy dissipation plate 5, and the material is aluminum alloy; the foamed metal energy dissipation plate 5 can be inserted into a rectangular groove formed by splicing the semi-rectangular groove of the shear loading rod 4 and the semi-rectangular groove in the shear restraining steel sleeve 3, and the sectional size of the foamed metal energy dissipation plate 5 is smaller than that of the rectangular groove by 1mm, so that the foamed metal energy dissipation plate is convenient to insert; the height of the foam metal energy consumption plate 5 is the same as the depth of the semi-rectangular groove of the shear loading rod 4 and the semi-rectangular groove of the shear restraining steel sleeve 3.
The memory alloy spring 6 is a combination body with a memory alloy spiral body in the middle and fixing plates at two ends; the width of the fixing plate is the same as that of a loading plate clamping groove of the shearing loading rod 4, and the width of the fixing plate is the same as that of clamping grooves of the cylinder walls at two ends of the shearing constraint steel sleeve 3, so that the fixing plate is convenient to insert; the material of the memory alloy spiral body is TiNi-based shape memory alloy, the material of the fixing plate is hard steel, and the memory alloy spiral body and the fixing plate are welded in an energy storage spot welding mode.
The arc-shaped extrusion steel plate 7 is an arc-shaped steel plate with L-shaped bends at two ends, and the height of the arc-shaped extrusion steel plate 7 is the same as that of the shearing rod of the shearing loading rod 4; the thickness of the L-shaped bent part steel plates at the two ends of the arc-shaped extrusion steel plate 7 is smaller than the width of the L-shaped groove of the shearing loading rod 4, the L-shaped groove is 1mm, the insertion is convenient, and the arc-shaped extrusion steel plate 7 is made of mild steel.
The memory alloy ball 8 is a ball body with the diameter of 5mm and is made of TiNi-based shape memory alloy; the arc-shaped extrusion steel plate 7, the end part of the shear loading rod 4 and the shear restraint sleeve 3 form a closed area filled with memory alloy balls 8.
And sealing rubber rings 9 are wound at the rectangular grooves of the cylinder walls at the two ends of the shearing constraint steel cylinder 3 and the gap part of the lever arm of the shearing loading rod 4, and the sealing rubber rings 9 are made of Teflon materials.
The sleeve sealing cover plate 10 is a cuboid steel plate with bolt mounting holes 11 distributed on the periphery, and the sleeve sealing cover plate 10 is made of hard steel and is connected with the shearing constraint steel sleeve 3 through the bolt mounting holes 11 in a bolt mode.
The installation method of the multistage-multistage energy-consumption composite buckling restrained brace by combining with a drawing comprises the following steps:
step a, two shear loading rods 4 which are symmetrically arranged are arranged in a channel of a shear restraint sleeve 3, foam metal energy dissipation plates 5 are inserted into rectangular grooves formed by semi-rectangular grooves of the shear loading rods 4 and semi-rectangular grooves in a shear restraint steel sleeve 3, and the insertion number of the foam metal energy dissipation plates 5 can be determined according to actual engineering requirements; the regions formed by the loading plate of the shear loading rod 4 and the tube walls at the two ends of the shear constraint sleeve 3 are provided with memory alloy springs 6 through clamping grooves.
And b, inserting two arc-shaped extrusion steel plates 7 which are symmetrically arranged up and down through an L-shaped clamping groove at the end part of the shearing rod of the shearing loading rod 4, wherein the arc-shaped extrusion steel plates 7, the end part of the shearing loading rod 4 and the shearing constraint sleeve 3 form a closed area filled with memory alloy balls 8, and the filling height is the same as the height of an inner groove of the shearing constraint sleeve 3.
And c, winding a sealing rubber ring 9 between the rectangular grooves of the cylinder walls at the two ends of the shearing restraint steel sleeve 3 and the lever arm gap part of the shearing loading rod 4, covering and sealing a sleeve sealing cover plate 10, connecting the sleeve sealing cover plate 10 with the shearing restraint steel sleeve 3 through a bolt mounting hole 11 by a bolt, and completing the installation of the composite energy consumption restraint rod body 1.
And d, hinging the arm of the shearing connecting rod 4 with the hinged support 2, and installing the shearing connecting rod on a part with a larger deformation space of the whole structure through the hinged support 2.
Although the embodiments have been described, once the basic inventive concept is obtained, other variations and modifications of these embodiments can be made by those skilled in the art, so that the above embodiments are only examples of the present invention, and not intended to limit the scope of the present invention, and all equivalent structures or equivalent processes using the contents of the present specification and drawings, or any other related technical fields, which are directly or indirectly applied thereto, are included in the scope of the present invention.
Claims (7)
1. The multi-stage-multistage energy-consumption composite buckling-restrained brace is characterized by comprising a composite energy-consumption restraining rod body (1) and hinged supports (2), wherein the composite energy-consumption restraining rod body (1) is of a rod piece structure with a rectangular cross section, and the hinged supports (2) are hinged to two ends of the composite energy-consumption restraining rod body (1);
the hinged support (2) comprises a bottom plate and an ear plate; mounting holes are formed in the periphery of the bottom plate and are in bolted connection with reserved anchor bolt holes at column ends through high-strength bolts; the middle part of the lug plate is provided with a hole, and the hole is connected with the lever arms of the shear loading rods (4) at the two ends of the composite energy consumption restraint rod body (1) through high-strength pins;
the composite energy consumption restraint rod body (1) comprises: the shear restraint steel sleeve (3), the sealing rubber ring (9) and the sleeve sealing cover plate (10); the shear restraint steel sleeve (3) is a cuboid steel sleeve, and a shear loading rod (4), a foam metal energy consumption plate (5), a memory alloy spring (6), an arc extrusion steel plate (7) and a memory alloy ball (8) can be arranged in a rectangular channel in the sleeve;
the inner grooves in the cylinder walls at the two ends of the shearing constraint steel sleeve (3) are respectively provided with two clamping grooves, and a fixing plate of a memory alloy spring (6) is inserted through the clamping grooves; the cylinder walls at two ends of the shearing restraining steel sleeve (3) are provided with rectangular grooves for accommodating a lever arm of the shearing loading rod (4); a sealing rubber ring (9) is wound at the gap part between the rectangular groove and the lever arm of the shearing loading lever (4); semi-rectangular grooves are respectively formed in the upper and lower parts of the inner channel of the shearing restraining steel sleeve (3), the semi-rectangular grooves in the shearing restraining steel sleeve (3) and the semi-rectangular grooves of the shearing loading rod (4) are spliced to form rectangular grooves, and the foam metal energy dissipation plate (5) is spliced; the depth of a semi-rectangular groove in the shear restraint steel sleeve (3) is the same as the height of a metal energy consumption plate (5) and a shear rod of a shear loading rod (4); bolt mounting holes (11) are formed in the periphery of the shear restraint steel sleeve (3), and the sleeve sealing cover plate (10) is a rectangular steel plate with the bolt mounting holes (11) distributed in the periphery; the sleeve sealing cover plate (10) is in bolted connection with the shear restriction steel sleeve (3) through a bolt mounting hole (11).
2. The multi-stage-multi-stage energy-consuming composite buckling restrained brace as claimed in claim 1, wherein: the shearing loading rod (4) comprises a rod arm, a loading plate and a shearing rod;
the section of a lever arm of the shearing loading rod (4) is rectangular, and the size of the section of the lever arm is 2mm smaller than that of rectangular grooves of the cylinder walls at two ends of the shearing constraint steel sleeve (3); the end part of the lever arm is provided with a hole which is hinged with the hinged support (2) through a high-strength pin bolt; a clamping groove is formed in the connecting surface of a loading plate of the shearing loading rod (4) and a rod arm, and a memory alloy spring (6) fixing plate is inserted; the size of the section of the shear rod of the shear loading rod (4) is 2mm smaller than that of the rectangular channel of the constraint steel sleeve (3); semi-rectangular grooves are formed in the upper surface and the lower surface of a shearing rod of the shearing loading rod (4), the semi-rectangular grooves of the shearing rod of the shearing loading rod (4) and the semi-rectangular grooves in the shearing restraining steel sleeve (3) are spliced to form rectangular grooves, and the foam metal energy dissipation plates (5) are spliced; the end part of the shearing loading rod (4) is provided with two L-shaped clamping grooves which are symmetrically arranged up and down and are inserted with arc-shaped extrusion steel plates (7); the shearing loading rod (4) and the shearing rod are as high as the foam metal energy consumption plate (5).
3. The multi-stage-multi-stage energy-consuming composite buckling restrained brace as claimed in claim 1, wherein: the foam metal energy dissipation plate (5) is a cuboid metal plate, and holes are formed in the surface and the interior of the foam metal energy dissipation plate (5); the foamed metal energy dissipation plate (5) is inserted into a rectangular groove formed by splicing a shear loading rod (4) shear rod semi-rectangular groove and a shear constraint steel sleeve (3) inner semi-rectangular groove, and the cross section size of the foamed metal energy dissipation plate (5) is smaller than that of the rectangular groove by 1 mm; the height of the foam metal energy dissipation plate (5) is the same as the depth of the semi-rectangular groove of the shear loading rod (4) and the semi-rectangular groove of the shear restraint steel sleeve (3).
4. The multi-stage-multi-stage energy-consuming composite buckling restrained brace as claimed in claim 1, wherein: the memory alloy spring (6) is a combination body with a memory alloy spiral body in the middle and fixing plates at two ends; the width of the fixed plate is the same as that of a loading plate card slot of the shearing loading rod (4), and the width of the fixed plate is the same as that of a clamping slot of the cylinder walls at two ends of the shearing constraint steel sleeve (3).
5. The multi-stage-multi-stage energy-consuming composite buckling restrained brace as claimed in claim 1, wherein: the arc-shaped extrusion steel plate (7) is an arc-shaped steel plate with L-shaped bends at two ends, and the height of the arc-shaped extrusion steel plate (7) is the same as that of the shearing rod of the shearing loading rod (4); the thickness of the L-shaped bent parts at the two ends of the arc-shaped extrusion steel plate (7) is less than 1mm of the width of the L-shaped groove of the shearing rod of the shearing loading rod (4).
6. The multi-stage-multi-stage energy-consuming composite buckling restrained brace as claimed in claim 1, wherein: the memory alloy ball (8) is a ball body; the arc-shaped extrusion steel plate (7), the end part of the shear loading rod (4) and the shear restraint sleeve 3 form a closed area filled with memory alloy balls (8).
7. The mounting method of the multistage-multistage energy-consumption composite buckling restrained brace is characterized by comprising the following steps of:
step a, two shearing loading rods (4) which are symmetrically arranged are arranged in a channel of a shearing restraint sleeve (3), foam metal energy dissipation plates (5) are inserted into rectangular grooves formed by semi-rectangular grooves of the shearing rods of the shearing loading rods (4) and semi-rectangular grooves in a shearing restraint steel sleeve (3), and the insertion number of the foam metal energy dissipation plates (5) can be determined according to actual engineering requirements; the region formed by the loading plate of the shear loading rod (4) and the tube walls at the two ends of the shear constraint sleeve 3 is provided with a memory alloy spring (6) through a clamping groove;
step b, inserting two arc-shaped extrusion steel plates (7) which are symmetrically arranged up and down through an L-shaped clamping groove at the end part of a shearing rod of the shearing loading rod (4), wherein the arc-shaped extrusion steel plates (7), the end part of the shearing loading rod (4) and the shearing constraint sleeve 3 form a closed area filled with memory alloy balls (8), and the filling height is the same as the height of an inner groove of the shearing constraint sleeve 3;
c, winding a sealing rubber ring (9) on a gap part between rectangular grooves in the cylinder walls at two ends of the shearing restraint steel sleeve (3) and a lever arm of the shearing loading rod (4), covering a sleeve sealing cover plate (10), connecting the sleeve sealing cover plate (10) with the shearing restraint steel sleeve (3) through a bolt mounting hole (11) by a bolt, and completing the installation of the composite energy consumption restraint rod body (1);
and d, hinging the arm of the shearing connecting rod 4 with the hinged support (2), and installing the shearing connecting rod on a part with a larger deformation space of the integral structure through the hinged support (2).
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| CN201910291529.6A CN109853773B (en) | 2019-04-12 | 2019-04-12 | Multi-stage and multi-stage energy-consumption composite buckling-restrained brace and mounting method |
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| CN113529997B (en) * | 2021-07-21 | 2022-09-23 | 扬州大学 | Multistage energy consumption connecting piece |
| CN113338469B (en) * | 2021-08-06 | 2022-02-18 | 湖南大学 | Assembled composite graded energy dissipation buckling restrained brace component |
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| CN114622481B (en) * | 2022-03-31 | 2023-05-05 | 中冶集团武汉勘察研究院有限公司 | Double-column type self-resetting pier structure with buckling restrained brace and construction method thereof |
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| CN204491889U (en) * | 2015-03-19 | 2015-07-22 | 河南城建学院 | Compound pair of yield point buckling-restrained energy-dissipation |
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| CN106869357A (en) * | 2017-03-23 | 2017-06-20 | 中国石油大学(华东) | A kind of replaceable curved plate damper of two benches power consumption damping sheet |
| US9732517B1 (en) * | 2016-06-06 | 2017-08-15 | Chun-Hao Huang | Earthquake resistant and reinforcing device for buildings and bridges |
| CN109098305A (en) * | 2018-09-28 | 2018-12-28 | 武汉理工大学 | A kind of Self-resetting support construction |
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2019
- 2019-04-12 CN CN201910291529.6A patent/CN109853773B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102505772A (en) * | 2011-12-23 | 2012-06-20 | 卢锐 | Buckling restrained energy-consumption supporting device of building frame structure |
| CN104278770A (en) * | 2014-10-27 | 2015-01-14 | 沈阳建筑大学 | Buckling buckling-restrained energy-dissipation brace |
| CN204491889U (en) * | 2015-03-19 | 2015-07-22 | 河南城建学院 | Compound pair of yield point buckling-restrained energy-dissipation |
| CN105625599A (en) * | 2016-03-25 | 2016-06-01 | 大连理工大学 | Reset shape memory alloy-extrusion type lead composite energy consumption damper |
| US9732517B1 (en) * | 2016-06-06 | 2017-08-15 | Chun-Hao Huang | Earthquake resistant and reinforcing device for buildings and bridges |
| CN106869357A (en) * | 2017-03-23 | 2017-06-20 | 中国石油大学(华东) | A kind of replaceable curved plate damper of two benches power consumption damping sheet |
| CN109098305A (en) * | 2018-09-28 | 2018-12-28 | 武汉理工大学 | A kind of Self-resetting support construction |
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