CN114482612A - Combined assembly type buckling-restrained energy-dissipation supporting component - Google Patents
Combined assembly type buckling-restrained energy-dissipation supporting component Download PDFInfo
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- CN114482612A CN114482612A CN202210266040.5A CN202210266040A CN114482612A CN 114482612 A CN114482612 A CN 114482612A CN 202210266040 A CN202210266040 A CN 202210266040A CN 114482612 A CN114482612 A CN 114482612A
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 57
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- 238000013016 damping Methods 0.000 claims abstract description 25
- 230000009471 action Effects 0.000 claims abstract description 16
- 230000002093 peripheral effect Effects 0.000 claims abstract description 9
- 238000005265 energy consumption Methods 0.000 claims abstract description 7
- 230000000694 effects Effects 0.000 claims abstract description 4
- 239000007769 metal material Substances 0.000 claims abstract description 3
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- 230000000452 restraining effect Effects 0.000 claims description 3
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- 238000005516 engineering process Methods 0.000 abstract description 2
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
- E04H9/0215—Bearing, supporting or connecting constructions specially adapted for such buildings involving active or passive dynamic mass damping systems
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
- E04H9/0237—Structural braces with damping devices
Abstract
A combined assembly type buckling-restrained energy-dissipation supporting component relates to the field of structural reinforcement and disaster prevention and shock absorption. The component comprises an inner core stress unit and a peripheral constraint unit. According to the energy consumption principle of metal materials, the inner core stress unit is designed into a damping plate and can directly bear the axial load effect and effectively dissipate earthquake input energy, the peripheral constraint unit is formed by combining and assembling various section steels and bolts and plays a constraint role in the inner core unit, the buckling load of the inner core unit is obviously improved, the inner core unit is enabled to generate full-section yielding under the action of external load, the fullness degree and the energy consumption capacity of a hysteresis loop of a component are further increased, and the double-core support is suitable for single-core and double-core support. Compare in traditional buckling restrained brace component, this kind of component does not have the welding or welds fewly, convenient to detach and equipment, and regular change damping plate, no mortar or concrete pouring have greatly simplified buckling restrained brace's processing technology, and structural style is simple, and the section pattern is various, and engineering suitability is strong.
Description
Technical Field
The invention relates to the technical field of structural reinforcement and disaster prevention and shock absorption, in particular to a combined assembly type buckling-restrained energy-dissipation supporting member.
Background
Earthquake is a sudden natural disaster, has strong burstiness and is difficult to predict early, so that urban traffic interruption and buildings are destroyed when a major earthquake occurs, a large number of casualties are caused, and economic loss brought to human by the earthquake cannot be estimated. However, after earthquake, the whole structure of the building is not enough, only the local part of the building is seriously damaged, and the whole building is dismantled and rebuilt, which inevitably causes overlarge economic burden, so that the reinforcement and repair are advocated as the main part. In order to ensure that the building structure can better resist the earthquake, researchers of domestic and foreign building structure earthquake-resistant design carry out a great deal of work so as to reduce the dynamic response of the structure under the earthquake.
The frame structure system is a common load-bearing structure system of a modern building structure, is flexible in spatial arrangement, is convenient to realize assembled and has certain energy consumption capability. However, the lateral stiffness of the frame system is low, the pure frame structure basically cannot realize the great earthquake and cannot fall, the small earthquake design concept can be only met, and the performance under the action of the great earthquake is difficult to ensure. To increase the lateral stiffness of the structure, it is often an option to provide steel struts between the beams and columns of the frame to form the frame support structure. However, the common steel support is affected by factors such as initial defects and installation errors, is easy to buckle before the material yields, has obvious difference of tension and pressure bearing capacity, and has poor hysteretic performance under the action of reciprocating load.
The buckling-restrained brace is a bearing energy dissipation component with double functions of a brace without integral instability under large deformation and a metal energy dissipation damper, and an outer constraint component is utilized to provide constraint for a brace inner core to restrain the buckling of the brace under pressure. The buckling-restrained brace provides lateral stiffness for the structure like a common brace under the action of small earthquake, and under the action of large earthquake, the buckling-restrained brace not only provides lateral stiffness for the structure, but also can achieve the purposes of dissipating earthquake energy and reducing the earthquake reaction of the structure by the compression deformation of the inner core component without buckling, thereby playing the role of the damper. The buckling-restrained energy-dissipation brace adopting the combined assembly type can be used for disassembling the outer constraint component to check the damage condition of the inner core after an earthquake, and the use function can be quickly recovered by replacing the damaged inner core at any time. The prior buckling-restrained energy-dissipation brace mainly has the following defects: 1) the production process of the support is complex, and the manufacturing period is long; 2) the supporting performance has high requirements on the debonding material, and the quality is not easy to ensure; 3) the self-weight of the support is large, and the transportation and the installation are inconvenient.
Disclosure of Invention
Aiming at the problems in the prior scientific technology, the combined assembly type buckling-restrained energy-dissipation brace component is adopted, so that the defects of the traditional buckling-restrained energy-dissipation brace can be effectively overcome. The combined type steel structure is formed by combining and assembling various types of section steels which are widely applied in the current market, the section steels are mainly connected through bolts, the combined type and the arrangement mode of the section steels can be adjusted according to the requirements of actual engineering by the aid of the cross section form of the support, and the interlayer displacement of the structure under the action of small earthquake and large earthquake can meet the requirements of earthquake-resistant design specifications of a building structure. The structural steel is used as a raw material of the combined assembly type buckling-restrained energy-dissipation supporting member, so that the self weight of the structure is reduced, the earthquake action cannot be obviously increased, the earthquake force can be effectively transferred by the support, the damage of the earthquake action to a structural system is reduced, the reinforcing quantity of the member is obviously reduced, and the construction cost is fundamentally reduced.
The technical scheme adopted by the invention is as follows: a combined assembly type buckling-restrained energy-dissipation supporting component is characterized by comprising an inner core stress unit and a peripheral restraining unit. According to the energy consumption principle of metal materials, the inner core stress unit is designed into a damping plate and can directly bear the axial load effect and effectively dissipate earthquake input energy, the peripheral constraint component is formed by combining and assembling various section steels and bolts and plays a role in constraining the inner core unit, the buckling load of the inner core unit is obviously improved, the inner core part is enabled to generate full-section yielding under the action of external load, the hysteresis loop fullness degree and the energy consumption capacity of the component are further increased, and the double-core support is suitable for single-core and double-core support. This buckling restrained brace component is as an energy dissipation shock-absorbing structure component, and its support has dual function: the main structure is used as an important component of a lateral force resisting system, so that the lateral stiffness of the main structure is increased, the structure torsion effect is controlled, and the condition that the structure is subjected to the displacement between layers under the action of small vibration to meet the requirement of standard design is ensured; and the energy dissipation component is used for supporting yielding energy dissipation under the action of a large earthquake, so that the main building is protected, and the whole structure is guaranteed to be stable against the large earthquake.
The outstanding value of the combined assembly type buckling-restrained energy-dissipation supporting component provided by the invention is represented as follows:
1. the combined assembly type buckling-restrained energy-dissipation supporting member has a full and stable hysteresis curve, has good ductility and rigidity, shows the same stress characteristic under the action of tensile and compressive loads, and overcomes the defect that a common supporting member is easy to yield.
2. The combined assembly type buckling-restrained energy dissipation supporting component is simple in manufacturing process, the production speed is improved, and compared with the traditional buckling-restrained supporting component, the combined assembly type buckling-restrained energy dissipation supporting component can be more conveniently applied to actual engineering.
3. The combined assembly type buckling-restrained energy dissipation supporting member has the energy dissipation capacity of the metal damper, so that the structural system is completely in the range of the elastic stage, and the damping energy dissipation is utilized to enhance the anti-seismic performance of the supporting member under medium and large earthquakes.
4. The combined assembly type buckling-restrained energy-dissipation supporting member is suitable for seismic reinforcement of a building structure, has obvious advantages, can provide lateral rigidity for an original structure, improves the overall performance of a structural system, reduces the reinforcement amount of the member, reduces the engineering cost, and simultaneously serves as another seismic-resistant defense line, so that the safety reserve of the structure is improved.
Drawings
FIG. 1 is a schematic cross-sectional view of a single core support; (a) a side view; (b) a front view; (c) general view of
FIG. 2 is a schematic cross-sectional view of a dual core support; wherein (a) is a side view; (b) a front view; (c) general view of
FIG. 3 is a schematic view of an inner core damping plate; wherein (a) is a general diagram; (b) front view of the same
In the figure: 1 is a damping plate; 2 is channel steel; 3 is a section steel plate or H-shaped steel; 4 is a bolt; 5 is a section steel plate; and 6 is a macromolecular damping rubber material.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments, which are provided for illustration only and are not intended to be limiting of the invention.
The combined assembled buckling-restrained energy-dissipation supporting member is formed by combining and assembling various section steels widely applied to the current society, the section steels are mainly connected through bolts, a layer of carbon fiber cloth wraps the outer surface of each section steel plate, the combined form and the arrangement mode of the section steels can be adjusted according to the requirements of actual engineering, the constraint ratio needs to meet the design requirements of the specification, and the interlayer displacement of the structure under the action of small earthquake and large earthquake can meet the requirements of the building structure earthquake-resistant design specification. The structural steel is used as the raw material of the combined assembly type buckling restrained brace component, so that the self weight of the structure is reduced, the earthquake action cannot be obviously increased, the earthquake force can be effectively transferred by the brace, the damage of the earthquake action to a structural system is reduced, the reinforcing quantity of the component is obviously reduced, and the construction cost is fundamentally reduced.
Referring to the attached drawing 1, the mononuclear support peripheral restraint unit is composed of two left and right back-to-back channel steels and two vertically symmetrically distributed section steel plates, bolt holes are formed in the channel steels and the section steel plates, a damping plate is clamped between the two channel steels and the two section steel plates by the kernel stress unit, four rows of high-strength bolts are fixed together on the wide central line of channel steel legs respectively, and the strength checking calculation and the minimum distance of the bolts meet the standard construction requirements. In the end connecting structure of the single-core support, the center of the end part of the inner core plate is welded with the two flange plates to make the inner core member into a cross connecting section, bolt holes can be formed in the connecting section, and the connecting section is spliced with the frame part by means of angle steel or a connecting plate.
Referring to the attached figure 2, the dual-core supporting peripheral constraint unit is composed of two left and right back-to-back channel steels and an H-shaped steel, bolt holes are formed in the channel steels and the H-shaped steel, a damping plate is respectively clamped between the H-shaped steel and the two channel steels by the inner core stress unit, the two channel steels are fixed together on the wide central line of channel legs by four rows of high-strength bolts in the upper, lower, left and right directions, and the strength checking calculation and the minimum distance of the bolts meet the requirements of standard construction. In the end connecting structure of the dual-core support, the center of the end of each inner core plate is welded with one flange plate to form a T-shaped section connecting section, and a frame node plate can be clamped between the two T-shaped section connecting sections to realize the direct connection with a frame.
Referring to the attached figure 3, the damping plate adopts an upper high-strength rectangular steel plate and a lower high-strength rectangular steel plate, the strength-to-yield ratio of steel is not less than 1.25, the elongation is more than 25%, and the damping plate has the impact toughness of 27J at zero degrees centigrade. A layer of high-molecular viscoelastic damping adhesive material is bonded and solidified on the middle surfaces of the two steel plates through heating and pressurizing to serve as a sandwich layer, the thickness of the damping plate can be designed according to a damping target, a row of round through holes are formed in the axis of the damping plate, the distance between the round holes is the width of the damping plate, the aperture is the thickness of the damping plate, the two layers are combined to inhibit a resonance peak value, the surface vibration of a component is reduced, and supporting, shock insulation and vibration reduction are facilitated.
The foregoing is only a preferred mode of the invention and it should be noted that modifications and improvements will occur to those skilled in the art without departing from the design principles of the invention and are considered to be within the scope of the invention.
Claims (5)
1. A combined assembly type buckling-restrained energy-dissipation supporting component is characterized by comprising an inner core stress unit and an outer periphery constraint unit; according to the energy consumption principle of metal materials, the inner core stress unit is designed into a damping plate and can directly bear the axial load effect and effectively dissipate earthquake input energy, the peripheral constraint component is formed by combining and assembling various section steels and bolts and plays a role in constraining the inner core unit, the buckling load of the inner core unit is improved, the inner core unit is enabled to generate full-section yielding under the action of external load, and further the fullness degree and energy consumption capacity of a hysteresis loop of the component are increased, and the component comprises a single-core support and a dual-core support.
2. The assembled buckling restrained energy dissipation brace member as claimed in claim 1, wherein the various section steels are connected by bolts, and the outer surface of the section steel plate is wrapped with a layer of carbon fiber cloth.
3. The combined assembly type buckling-restrained energy-dissipation supporting member as recited in claim 1, wherein the mononuclear support peripheral restraining unit is composed of two left and right back-to-back channel steels and two profile steel plates which are symmetrically distributed up and down, bolt holes are formed in the channel steels and the profile steel plates, the inner core stress unit clamps a damping plate between the two channel steels and the two profile steel plates, and the two damping plates are fixed together by high-strength bolts; in the end connecting structure of the single-core support, the center of the end part of the inner core plate is welded with the two flange plates to make the inner core member into a cross connecting section, bolt holes can be formed in the connecting section, and the connecting section is spliced with the frame part by means of angle steel or a connecting plate.
4. The combined assembly type buckling-restrained energy-dissipation supporting component as claimed in claim 1, wherein the dual-core supporting peripheral restraining unit is composed of two left and right back-to-back channel steels and an H-shaped steel, bolt holes are formed in the channel steels and the H-shaped steel, the inner core stress unit is used for respectively clamping a damping plate between the H-shaped steel and the two channel steels, and the H-shaped steel and the two channel steels are fixed together through high-strength bolts; in the end connecting structure of the dual-core support, the center of the end of each inner core plate is welded with one flange plate to form a T-shaped section connecting section, and a frame node plate can be clamped between the two T-shaped section connecting sections to realize the direct connection with a frame.
5. The combined assembly type buckling-restrained energy-dissipation brace component as claimed in claim 1, wherein the damping plate is composed of an upper rectangular steel plate and a lower rectangular steel plate, the steel plate has a yield ratio not less than 1.25, an elongation rate more than 25%, and an impact toughness of 27J at zero degrees centigrade; a layer of high-molecular viscoelastic damping adhesive material is bonded and solidified on the middle surfaces of the two steel plates through heating and pressurizing to serve as a sandwich layer, a row of round through holes are formed in the axis of the damping plate, and the two layers of the damping adhesive material are combined to inhibit a resonance peak value and reduce the surface vibration of a component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210266040.5A CN114482612A (en) | 2022-03-17 | 2022-03-17 | Combined assembly type buckling-restrained energy-dissipation supporting component |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210266040.5A CN114482612A (en) | 2022-03-17 | 2022-03-17 | Combined assembly type buckling-restrained energy-dissipation supporting component |
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| CN114482612A true CN114482612A (en) | 2022-05-13 |
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| CN202210266040.5A Pending CN114482612A (en) | 2022-03-17 | 2022-03-17 | Combined assembly type buckling-restrained energy-dissipation supporting component |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115341675A (en) * | 2022-08-17 | 2022-11-15 | 西南石油大学 | Buckling restrained brace with monocline auxetic property |
| CN117432101A (en) * | 2023-12-21 | 2024-01-23 | 西南石油大学 | Assembled CFRP-slotted steel plate shear wall structure and assembling method thereof |
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| US20030222188A1 (en) * | 2002-05-29 | 2003-12-04 | Smelser James M. | Bearing brace apparatus |
| US20080229683A1 (en) * | 2007-03-19 | 2008-09-25 | Pavel Bystricky | Buckling restrained brace for structural reinforcement and seismic energy dissipation and method of producing same |
| CN101545289A (en) * | 2009-04-13 | 2009-09-30 | 清华大学 | All-steel buckling-preventing energy-consuming brace |
| CN103541457A (en) * | 2013-10-24 | 2014-01-29 | 哈尔滨工业大学 | Manufacturing method of fabricated anti-buckling support wrapped and limited by fibers |
| CN104989002A (en) * | 2015-07-14 | 2015-10-21 | 云南震安减震科技股份有限公司 | Linear steel plate and rubber laminated and combined type buckling restrained brace |
| CN106593060A (en) * | 2017-02-06 | 2017-04-26 | 同济大学 | Novel buckling energy consumption support |
| CN108060726A (en) * | 2018-02-05 | 2018-05-22 | 沈阳建筑大学 | A kind of double aluminum alloy inner core assembled buckling restrained brace |
-
2022
- 2022-03-17 CN CN202210266040.5A patent/CN114482612A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030222188A1 (en) * | 2002-05-29 | 2003-12-04 | Smelser James M. | Bearing brace apparatus |
| US20080229683A1 (en) * | 2007-03-19 | 2008-09-25 | Pavel Bystricky | Buckling restrained brace for structural reinforcement and seismic energy dissipation and method of producing same |
| CN101545289A (en) * | 2009-04-13 | 2009-09-30 | 清华大学 | All-steel buckling-preventing energy-consuming brace |
| CN103541457A (en) * | 2013-10-24 | 2014-01-29 | 哈尔滨工业大学 | Manufacturing method of fabricated anti-buckling support wrapped and limited by fibers |
| CN104989002A (en) * | 2015-07-14 | 2015-10-21 | 云南震安减震科技股份有限公司 | Linear steel plate and rubber laminated and combined type buckling restrained brace |
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| CN108060726A (en) * | 2018-02-05 | 2018-05-22 | 沈阳建筑大学 | A kind of double aluminum alloy inner core assembled buckling restrained brace |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115341675A (en) * | 2022-08-17 | 2022-11-15 | 西南石油大学 | Buckling restrained brace with monocline auxetic property |
| CN117432101A (en) * | 2023-12-21 | 2024-01-23 | 西南石油大学 | Assembled CFRP-slotted steel plate shear wall structure and assembling method thereof |
| CN117432101B (en) * | 2023-12-21 | 2024-03-05 | 西南石油大学 | Assembled CFRP-slotted steel plate shear wall structure and assembling method thereof |
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