CN108625652B - Can directly change full assembled buckling restrained brace of style of calligraphy kernel - Google Patents
Can directly change full assembled buckling restrained brace of style of calligraphy kernel Download PDFInfo
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- CN108625652B CN108625652B CN201810499458.4A CN201810499458A CN108625652B CN 108625652 B CN108625652 B CN 108625652B CN 201810499458 A CN201810499458 A CN 201810499458A CN 108625652 B CN108625652 B CN 108625652B
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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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Abstract
The invention relates to a fully-assembled buckling-restrained brace with a straight-line-shaped inner core capable of being directly replaced, and belongs to the field of structural engineering. The buckling-restrained brace consists of two linear kernel components, an assembled peripheral restraining device, two kernel outer side connecting cover plates and a first high-strength bolt group. Based on the core sectional assembly type design concept, axial pressure is transmitted through the linear core member in a sectional jacking mode, the core outer side connecting cover plate and the first high-strength bolt group transmit axial tension, the dog bone weakening or the slotting weakening is arranged on the linear core member to control the plastic development area of the core member, so that the buckling-restrained brace meets basic bearing and energy consumption, the two core members can be pulled out from the peripheral restraining device for replacement after an earthquake only by disassembling the first high-strength bolt group and the core outer side connecting cover plate, the defect that the peripheral restraining device needs to be disassembled when the core is replaced by the traditional assembled buckling-restrained brace is overcome, and repair work after the earthquake is optimized.
Description
Technical Field
The patent relates to a can directly change full assembled buckling restrained brace of a style of calligraphy kernel belongs to structural engineering technical field.
Background
The buckling-restrained brace consists of an inner core component and a peripheral restraining device, wherein the inner core component bears axial pressure, and the peripheral restraining device restrains the transverse displacement of the inner core component to enable the inner core component to generate full-section yielding under the action of axial pressure. Since the 90 s ' earthquake of Osaka and North Ridge in America in the past century, a great deal of engineering practice has been carried out in developed countries such as America and Japan, and the buckling restrained brace becomes one of the best energy dissipation and shock absorption members due to the combination of the ' support function in normal use state and small earthquake ' and the ' energy dissipation function under large earthquake ' and is rapidly popularized and applied in recent years.
At present, in an assembled buckling-restrained brace adopted in engineering, a core component of the assembled buckling-restrained brace generally adopts a linear component, a cross component or an I-shaped component, a peripheral constraint device adopts a concrete assembled peripheral constraint device, a steel pipe concrete combined assembled peripheral constraint device or a pure steel assembled peripheral constraint device, and a certain gap is left between the surface of the core component and the surface of the peripheral constraint device to prevent the core component from being blocked due to transverse expansion when the core component is pressed. Under the normal use state and the action of small shock, the inner core component of the buckling-restrained brace is stressed to keep an elastic state and provides enough rigidity for the main body framework; when a large earthquake occurs, the inner core component firstly goes into yielding, a large amount of earthquake energy is consumed, and the main body frame is protected.
However, the assembled buckling restrained brace that now commonly used, need disassemble peripheral restraint device earlier and just can carry out the change of kernel component after the earthquake takes place, and the repair work is wasted time and energy after the earthquake, is not conform to the connotation of advocating green building now. Based on the structure, the invention provides the full-assembly type buckling restrained brace with the straight-line-shaped inner core capable of being directly replaced, and the defect that a peripheral restraining device needs to be disassembled firstly when the traditional assembly type buckling restrained brace is repaired after an earthquake is overcome. The buckling-restrained brace consists of two linear inner core members, two overhanging restrained members, two base plates, an inner core outer side connecting cover plate, a first high-strength bolt group and a second high-strength bolt group, wherein axial pressure is tightly transmitted through the two linear inner core members, axial tension is transmitted through the inner core outer side connecting cover plate and the first high-strength bolt group, a dog bone weakening or slotting weakening is arranged on the linear inner core members to control the plastic development area of the inner core members, and a peripheral restrained device still plays a role in preventing buckling instability of the two linear inner core members; after the earthquake, the two core components can be pulled out of the peripheral restraining device only by disassembling the first high-strength bolt group and the core outer side connecting cover plate without disassembling the peripheral restraining device, and the buckling-restrained brace with the replaced core components can still be continuously used, so that the repair work after the earthquake is optimized.
In addition, the first high-strength bolt group used for connection has a force transmission effect and a limiting effect, when the linear inner core component is pulled, the first high-strength bolt group transmits the pulling force on the linear inner core component to the inner core outer side connecting cover plate, meanwhile, the first high-strength bolt group limits the sliding of the peripheral restraining device, and at the moment, the peripheral restraining device does not participate in the stress. When the inner core members are pressed, the first high-strength bolt group limits the peripheral restraining device to slide, the peripheral restraining device is in a bending state, and the two inner core members are restrained from buckling and buckling instability.
According to the invention, the direct replacement of the core component of the fabricated buckling-restrained brace can be realized by reasonably arranging common plates, and a limiting device of a peripheral restraining device is not required to be additionally arranged; the invention has simple integral structure and reasonable force transmission, is particularly suitable for buildings in areas with higher earthquake fortification intensity, ensures the bearing and energy consumption of the structure lateral force resisting component, solves the problems that the component can not be quickly repaired after the earthquake and the like, improves the efficiency and the time efficiency, and optimizes the repairing work after the earthquake.
Disclosure of Invention
The invention provides a full-assembled buckling-restrained brace capable of directly replacing a linear inner core, and aims to overcome the defect that a peripheral restraining device is required to be disassembled and the inner core component cannot be directly replaced when the existing assembled buckling-restrained brace is repaired after an earthquake, improve the efficiency and the timeliness, optimize the repair work after the earthquake and provide more selection ranges for the assembled buckling-restrained brace.
In order to achieve the purpose, the invention adopts the following technical means:
the utility model provides a can directly change full assembled buckling restrained brace of style of calligraphy kernel which characterized in that: the buckling-restrained brace consists of two linear kernel components, an assembled peripheral restraining device, two kernel outer side connecting cover plates and a first high-strength bolt group; the buckling-restrained brace overcomes the defect that an assembled peripheral restraining device needs to be disassembled when an inner core of a traditional assembled buckling-restrained brace is replaced after an earthquake, on the basis of an inner core sectional assembly type design concept, axial pressure is transmitted through the jacking of two linear inner core components, axial tension is transmitted through a connecting cover plate and a first high-strength bolt group outside the inner core, a linear inner core component plasticity development area is controlled through dog bone weakening or slotting weakening arranged on the linear inner core component, and the peripheral restraining device still achieves the purpose of preventing buckling instability of the two linear inner core components; after the earthquake, the two linear core members can be directly pulled out from the peripheral restraining device only by disassembling the first high-strength bolt group and the core outer side connecting cover plate without disassembling the peripheral restraining device, the post-earthquake repair work is simple and quick, and the buckling-restrained brace after replacing the linear core members can still be continuously used, so that the function recovery requirement after the earthquake is met; the assembled peripheral constraint device is formed by connecting two overhanging constraint components and two backing plates through a second high-strength bolt group, and the thickness of each backing plate is used for controlling the gap between each overhanging constraint component and the linear inner core component; the two linear inner core components need to penetrate through the peripheral restraint device during installation, the end parts of the two linear inner core components are tightly propped, and then the linear inner core components and the assembled peripheral restraint device are connected into a whole through the inner core outer side connecting cover plate and the first high-strength bolt group.
The whole length of the linear kernel component is divided into three areas: an end reinforcing area for avoiding the bending damage of the end of the core component of the anti-bending support; the middle weakening area, namely the plastic development area of the inner core member, is controlled in a dog bone weakening or grooving weakening mode, the weakening width is more than twice of the diameter of the hole of the high-strength bolt, the weakening area is filled with rubber materials or is not filled with the rubber materials, the tensile bearing capacity of the section of the area is ensured to be weaker than that of the other two areas, and therefore the plastic damage is controlled in the area; and the end part is provided with an opening connecting area which is used for connecting the connecting cover plate and the peripheral restraining device on the outer side of the inner core, transmitting axial tension through the first high-strength bolt group and limiting the sliding of the peripheral restraining device.
The two overhanging type restraining components and the two backing plates are provided with holes at corresponding positions on two sides, and the assembled peripheral restraining device is formed by installing a second high-strength bolt group; the outer side of the inner core is connected with the cover plate and the assembled peripheral restraint device, and holes are formed at positions corresponding to the hole-forming connection regions at the end parts of the linear inner core components; the outer side connecting cover plate of the inner core, the assembled peripheral restraint device and the two linear inner core components are connected into a whole by installing the first high-strength bolt group.
The yield strength of the plate material of the core outer side connecting cover plate is higher than that of the linear core component material, and the total tensile bearing capacity of all the core outer side connecting cover plates is higher than twice of the tensile bearing capacity of the section of the weakened area in the middle of the linear core component; the first high-strength bolt group has a force transmission function and a limiting function, when the linear inner core component is pulled, the first high-strength bolt group transmits the pulling force on the linear inner core component to the connecting cover plate on the outer side of the inner core, and simultaneously limits the sliding of the peripheral restraining device, and the peripheral restraining device does not participate in the force bearing; when the linear inner core members are pressed, the first high-strength bolt group limits the peripheral restraining devices to slide, the peripheral restraining devices are in a bent state, and the two linear inner core members are restrained from buckling and buckling instability.
The backing plate is a full-length single plate with holes or a plurality of cushion blocks with holes.
The overhanging type restraining component is an overhanging type concrete restraining component and an overhanging type rectangular steel pipe restraining component; the overhanging rectangular steel pipe constraint component is filled with concrete or not filled with concrete.
The advantages of the patent are shown in the following aspects:
(1) the core component can be directly replaced after the earthquake. Based on the core sectional assembly type design concept, the two linear core members are tightly propped to transmit axial pressure, the cover plate and the first high-strength bolt group are connected to the outer side of the core to transmit axial tension, and the dog bone weakening or slotting weakening is arranged on the linear core members to control the plastic development area of the core members, so that the buckling-restrained brace can meet basic bearing and energy consumption, and can be directly pulled out from a peripheral restraining device only by disassembling the first high-strength bolt group and the cover plate connected to the outer side of the core after an earthquake, without disassembling the peripheral restraining device, the buckling-restrained brace with the replaced core members can still be continuously used, and the requirement of functional recovery after the earthquake is met. The invention overcomes the defect that a peripheral restraint device needs to be disassembled when the kernel of the traditional assembled buckling-restrained brace is replaced, improves the efficiency and the time efficiency, and optimizes the repair work. In addition, the core subsection assembly type concept is applied to the assembly type buckling restrained brace, so that the core component and the peripheral restraining device are both in an assembly type, and the core component can be directly replaced after the earthquake, and the method is initiated in the field.
(2) The force transmission is reasonable and the stress is ingenious. When the linear inner core member is pulled, the first high-strength bolt group transmits the pulling force on the linear inner core member to the connecting cover plate on the outer side of the inner core, and simultaneously, the sliding of the peripheral restraining device is limited, and the peripheral restraining device does not participate in the stress. When the linear inner core members are pressed, the first high-strength bolt group limits the peripheral restraining devices to slide, the peripheral restraining devices are in a bent state, and the two linear inner core members are restrained from buckling and buckling instability.
(3) Simple structure and multiple purposes. The invention has simple structure, all components can be prefabricated in a factory and assembled in the factory or construction site, the processing precision is high, and no complex construction process is generated. The first high-strength bolt group used for connecting each component in the device also plays a role in force transmission and limiting, and a limiting device of a peripheral restraining device is not required to be additionally arranged.
Drawings
FIG. 1 is a three-dimensional view of a fully assembled buckling restrained brace with a directly replaceable in-line core;
FIG. 2 is a disassembled view of a fully assembled buckling restrained brace with a straight inner core capable of being directly replaced;
FIG. 3 is a front view of a fully assembled anti-buckling support with a directly replaceable in-line core;
FIG. 4 is a side view of a fully assembled buckling restrained brace with a directly replaceable in-line core;
FIG. 5 is a top view of a fully assembled anti-buckling support with a directly replaceable in-line core;
FIG. 6 is a schematic view of a core component region of a fully-assembled buckling restrained brace with a straight core capable of being directly replaced;
FIG. 7 is a schematic diagram of a core member weakening type of a fully fabricated buckling restrained brace with a straight core directly replaceable: (a) is in dog bone weakened form and is not filled; (b) in the dog bone weakened form, and rubber filled; (c) in a slotted weakened form;
FIG. 8 shows several types of alternative overhanging restraining members: (a) the external extending type concrete constraint type buckling-restrained brace with the replaceable linear inner core; (b) the buckling restrained brace is an extended concrete-filled steel tube restrained brace with a replaceable linear inner core; (c) is one of the extending double rectangular pipe constraint type buckling restrained brace with a replaceable linear inner core. (d) The second type of the extending double rectangular tube constraint buckling restrained brace is a replaceable linear inner core.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to fig. 1 to 8.
As shown in fig. 1 to 8, a fully-assembled buckling restrained brace with a directly replaceable in-line core comprises the following components:
1-a straight-line kernel component;
2-an overhanging restraining member;
3-backing plate;
4, connecting a cover plate outside the inner core;
5-a first high-strength bolt group;
6-a second high-strength bolt group;
7-end reinforcement zone;
8-middle weakening zone;
9-end opening connection zone;
10-dog bone weakening;
11-grooving weakening;
12-filling with rubber material;
13-overhanging concrete restraining members;
14-overhanging rectangular steel tube constraint component;
15-concrete filling.
As shown in fig. 1 to 8, a fully-assembled buckling restrained brace with a directly replaceable linear core comprises two linear core members (1), two overhanging constraint members (2), two backing plates (3), a core outer side connecting cover plate (4), a first high-strength bolt group (5) and a second high-strength bolt group (6). When the buckling-restrained brace is installed, the two overhanging type restraining components (2) and the two backing plates (3) are connected through the second high-strength bolt group (6) to form a peripheral restraining device, the backing plates (3) are used for controlling a gap between the two overhanging type restraining components (2), then the two linear inner core components (1) penetrate through the peripheral restraining device, the end portions of the linear inner core components are tightly pressed, and finally the linear inner core components (1) and the peripheral restraining device are connected into a whole through the inner core outer side connecting cover plate (4) and the first high-strength bolt group (5) to form the buckling-restrained brace.
The linear core member (1) is divided into three regions, as shown in fig. 6, which are an end reinforcing region (7), a middle weakening region (8) and an end opening connecting region (9). The end reinforcing area (7) can be reinforced by a conventional method by additionally arranging a rib plate; the middle weakened area (8) is controlled in a dog bone weakening (10) or grooving weakening (11) mode, the weakening width is larger than twice of the diameter of the hole of the high-strength bolt, the weakened area is filled with a rubber material (12) or is not filled with the rubber material, the tensile rigidity of the section of the area is guaranteed to be weaker than that of the other two areas, the middle weakened area (8) is arranged in the dog bone weakening (10) mode, and the weakened area is not filled; and the end part is provided with a hole connecting area (9) for connecting the core outer side connecting cover plate (4) and the peripheral constraint device, so that the force transmission and limiting functions of the first high-strength bolt group (5) are ensured.
When the buckling-restrained brace is assembled, two overhanging restraining components (2) and two backing plates (3) are connected through a second high-strength bolt group (6) to form a peripheral restraining device, then two linear core components (1) penetrate into the peripheral restraining device from two sides respectively, the two end parts of the linear core components are tightly propped, a first high-strength bolt group (5) penetrates through the outer side of the core to be connected with a cover plate (4), the peripheral restraining device and the linear core components (1), and then the components are connected into a whole by applying pretightening force to form the buckling-restrained brace.
The overhanging type restraining component (2) is an overhanging type concrete restraining component (13) and an overhanging type rectangular steel pipe restraining component (14), and concrete filling (15) can be carried out in the rectangular steel pipe or not. The peripheral restraining device formed by the overhanging restraining members (2) is shown in detail in fig. 8, and can be selected by a user according to the structural design requirements. In the embodiment, an overhanging rectangular steel pipe constraint component (14) is selected, concrete filling is not carried out, and a full-length perforated single plate is selected as the backing plate (3). In addition, the present invention is not limited to the examples, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.
Claims (2)
1. The utility model provides a can directly change full assembled buckling restrained brace of style of calligraphy kernel which characterized in that: the buckling-restrained brace consists of two linear kernel components, an assembled peripheral restraining device, two kernel outer side connecting cover plates and a first high-strength bolt group; the assembled peripheral restraint device is based on a core sectional assembly design concept, axial pressure is tightly transmitted through the jacking of two linear core components, and axial tension is transmitted through the connecting cover plate on the outer side of the core and the first high-strength bolt group; after the earthquake, the two linear core members can be directly pulled out of the assembled peripheral restraining device only by disassembling the first high-strength bolt group and the core outer side connecting cover plate without disassembling the assembled peripheral restraining device, and the buckling-restrained brace after replacing the linear core members can still be continuously used, so that the function recovery requirement after the earthquake is met; the whole length of the linear kernel component is divided into three areas: the three areas are respectively an end strengthening area (7), a middle weakening area (8) and an end opening connecting area (9); an end reinforcing area for avoiding the bending damage of the end of the core component of the anti-bending support; the middle weakening area, namely the plastic development area of the inner core member, is controlled in a dog bone weakening or grooving weakening mode, the weakening width is more than twice of the diameter of the hole of the high-strength bolt, the weakening area is filled with rubber materials or is not filled with the rubber materials, the tensile bearing capacity of the section of the area is ensured to be weaker than that of the other two areas, and therefore the plastic damage is controlled in the area; the end part is provided with a hole connecting area which is used for connecting the core outer side connecting cover plate and the assembled peripheral restraining device, effectively transmitting axial tension through the first high-strength bolt group and limiting the assembled peripheral restraining device to slide; the assembled peripheral constraint device is formed by connecting two overhanging constraint components and two backing plates through a second high-strength bolt group, and the thickness of each backing plate is used for controlling the gap between each overhanging constraint component and the linear inner core component; the two linear inner core components need to penetrate through the assembled peripheral restraint device during installation, the end parts of the two linear inner core components are tightly propped, and then the linear inner core components and the assembled peripheral restraint device are connected into a whole through the inner core outer side connecting cover plate and the first high-strength bolt group; the two overhanging type restraining components and the two backing plates are provided with holes at corresponding positions on two sides, and the assembled peripheral restraining device is formed by installing a second high-strength bolt group; the outer side of the inner core is connected with the cover plate and the assembled peripheral restraint device, and holes are formed at positions corresponding to the hole-forming connection regions at the end parts of the linear inner core components; connecting the outer side connecting cover plate of the inner core, the assembled peripheral restraint device and the two linear inner core components into a whole by installing a first high-strength bolt group; the outer side connecting cover plate of the inner core is arranged on the outer side of the assembled peripheral restraint device, the yield strength of a plate material of the outer side connecting cover plate of the inner core is higher than that of a linear inner core component material, and the total tensile bearing capacity of all the outer side connecting cover plates of the inner core is higher than twice of that of the section of a weakening area in the middle of the linear inner core component; the first high-strength bolt group has a force transmission function and a limiting function, when the linear inner core component is pulled, the first high-strength bolt group transmits the pulling force on the linear inner core component to the connecting cover plate on the outer side of the inner core, and simultaneously limits the sliding of the assembly type peripheral restraining device, and the assembly type peripheral restraining device does not participate in the stress; when the linear inner core members are pressed, the first high-strength bolt group limits the assembled peripheral restraining devices to slide, the assembled peripheral restraining devices are in a bent state, and the two linear inner core members are effectively restrained from buckling and buckling instability.
2. The fully assembled buckling restrained brace with a directly replaceable in-line core as claimed in claim 1, wherein: the backing plate is a full-length single plate with holes or a plurality of cushion blocks with holes; the overhanging type restraining component is an overhanging type concrete restraining component and an overhanging type rectangular steel pipe restraining component; the overhanging rectangular steel pipe constraint component is filled with concrete or not filled with concrete.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810499458.4A CN108625652B (en) | 2018-05-23 | 2018-05-23 | Can directly change full assembled buckling restrained brace of style of calligraphy kernel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810499458.4A CN108625652B (en) | 2018-05-23 | 2018-05-23 | Can directly change full assembled buckling restrained brace of style of calligraphy kernel |
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| Publication Number | Publication Date |
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| CN108625652A CN108625652A (en) | 2018-10-09 |
| CN108625652B true CN108625652B (en) | 2020-08-07 |
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| CN201810499458.4A Active CN108625652B (en) | 2018-05-23 | 2018-05-23 | Can directly change full assembled buckling restrained brace of style of calligraphy kernel |
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| CN110924553B (en) * | 2019-12-10 | 2021-11-12 | 东北林业大学 | Assembled buckling restrained brace |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004092052A (en) * | 2002-08-29 | 2004-03-25 | Shimizu Corp | Brace damper |
| CN202519808U (en) * | 2012-03-02 | 2012-11-07 | 北京工业大学 | Multi-segment connected overlong-scale anti-buckling supporter |
| JP5944424B2 (en) * | 2014-03-11 | 2016-07-05 | 大和ハウス工業株式会社 | Joint structure of buckling-restrained brace |
| JP6466075B2 (en) * | 2014-03-19 | 2019-02-06 | 大和ハウス工業株式会社 | Joint structure of split buckling restraint brace |
| CN104358328B (en) * | 2014-10-18 | 2017-01-25 | 北京工业大学 | All-steel four-steel pipe multistage mountable overlong buckling-restrained brace |
| CN206309097U (en) * | 2016-12-15 | 2017-07-07 | 广州华森建筑与工程设计顾问有限公司 | The replaceable assembled buckling restrained brace of section is surrendered after one kind shake |
| CN106639029A (en) * | 2017-02-04 | 2017-05-10 | 同济大学 | All-steel-assembled buckling restrained brace with lateral side capable of being inspected |
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