CN108952288B - Installation method of double-torsion anti-buckling device of buckling-restrained brace - Google Patents
Installation method of double-torsion anti-buckling device of buckling-restrained brace Download PDFInfo
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- 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
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Abstract
The divisional application discloses an installation method of a double-torsion anti-buckling device of a buckling restrained brace, belongs to the field of building shock absorption, and is used for solving the problem that the existing brace mainly depends on the deformation and energy consumption of an inner core, and the technical key points are as follows: two torsion instability-prevention devices are respectively arranged at two end parts of the energy-consumption inner core, wherein the end parts are 3cm-10cm away from the tail end of the energy-consumption inner core, and the effect is as follows: and the axial load bearing of the energy-consuming inner core is dispersed in the torsion plane to be borne.
Description
The application is a divisional application with the application number of 201710348998.8, application date 2017-05-17, and the invention name of 'buckling restrained brace with double-torsion buckling-restrained device'.
Technical Field
The invention belongs to the field of building shock absorption, and relates to a buckling-restrained brace with a double-torsion anti-buckling device.
Background
The traditional civil engineering structural support mainly has: the support forms such as a central support, an eccentric support, an energy consumption angle support and an energy consumption frame support, most of the supports consume earthquake energy mainly through deformation, and the aim of reducing earthquake disasters is achieved. Due to the elastic-plastic property of the structural members, the energy-consuming supports are inevitably damaged and deformed, so that the energy dissipation is not facilitated, and the safety of the building is influenced.
The energy dissipation and shock absorption technology is favored by scholars at home and abroad in recent years, and the principle is that energy of an earthquake input structure is effectively consumed by adopting an additional device or a certain method. From the energy dissipation perspective, the total energy of the earthquake input structure is fixed, the more energy consumed by the energy consumption component, the smaller the energy consumed by the structure, and the smaller the earthquake response of the structure, so that the main structure can be effectively protected from being damaged in the earthquake. From a dynamic point of view, the installation of energy consuming devices into the structure increases the damping of the structure, increasing the energy dissipated by the structure. Therefore, the extensive research and application of the energy dissipation and shock absorption technology can obviously improve the seismic performance of the structure.
Buckling-Restrained Brace (bucking-Restrained Brace) has attracted more and more attention in recent years as an energy-dissipating and shock-absorbing member with both side bearing capacity and energy consumption capacity, and is widely used in japan, the united states and china. The buckling-restrained brace is mainly composed of three parts, namely a core unit (core material), a constraint unit and a sliding mechanism unit. The buckling-restrained brace is mainly characterized in that the core material can yield under the pressure and the tension, so that the seismic energy can be effectively dissipated. Meanwhile, the restraining unit can provide side support and restraint, and prevent the core material from being wholly or locally unstable when the core material is pressed. In addition, the sliding mechanism unit provides a sliding interface between the core unit and the constraint unit, and is isolated by a non-adhesive material or a gap so as to ensure that the inner core solely bears the axial force. Therefore, the buckling restrained brace not only can provide lateral rigidity for the structure, but also eliminates the buckling supporting problem in the traditional supporting frame system, and ensures stronger and more stable energy dissipation capability in strong earthquake. In addition, the buckling restrained brace also has the advantages of flexible design, convenient installation, convenient replacement and the like, can be used for newly-built buildings, can also be used for structural seismic reinforcement and transformation, and can be used for steel structure systems and concrete structure systems.
Although the buckling-restrained brace has many advantages, the buckling-restrained brace member dissipates earthquake input energy through elastic-plastic deformation of the inner core, so that the structure generates large residual deformation after being subjected to a large earthquake action and is difficult to repair, and therefore, designing a structure which can not be damaged or only be quickly repaired in the earthquake will become one of important research directions for sustainable development of engineering earthquake resistance. The front person attaches a friction damper at the end part of the buckling-restrained brace, but after the friction damper is subjected to a heavy shock, the friction damper is not easy to detach due to buckling of the brace; in addition, the traditional self-resetting support realizes the self-resetting function by adding a resetting rib, but prestress needs to be applied in an initial state, and the energy consumption capability of the support is seriously influenced by the accurate application of the prestress and the loss of the prestress; the replacement frequency and maintenance cost of the inner core are high.
Disclosure of Invention
In order to solve the problems that the existing support mainly depends on the deformation and energy consumption of the inner core, the inner core possibly loses effect prematurely in the earthquake, the inner core possibly has instability due to external constraint, the replacement and maintenance cost is high, and the self-resetting capability is not provided, the invention provides the following technical scheme:
a buckling restrained brace with a double-torsion anti-buckling device comprises an energy consumption inner core, a baffle, a connecting plate and a restraining outer sleeve, wherein the restraining outer sleeve is covered on the periphery of the energy consumption inner core, the restraining outer sleeve extends outwards from two end parts in the axial direction of the energy consumption inner core and is connected onto the connecting plate through the baffle, the restraining outer sleeve is provided with a group of parallel inner walls which are opposite and parallel to each other, the energy consumption inner core is parallel to the energy consumption inner core, and the energy consumption inner core is covered on one end part in the restraining outer sleeve along the axial direction of the energy consumption inner core and is arranged in a space between the inner walls of the restraining outer sleeve corresponding to; and a second torsion instability-preventing device is arranged in a space between the other end of the energy-consuming inner core and the inner wall of the constraint outer sleeve corresponding to the end.
Furthermore, the first torsion instability prevention device comprises a torsion spring, a limiting clamp and a guide iron rod, the guide iron rod penetrates through the energy consumption inner core in the direction perpendicular to the axis of the energy consumption inner core and is fixed on the energy consumption inner core, two sides of the iron core exposed in the space are covered and connected with the torsion spring, and the spring force arms connected with the torsion spring body are limited by the limiting clamp respectively at the upper side and the lower side of a torsion plane formed when the torsion spring is twisted.
Furthermore, the energy dissipation inner core is a long rectangular body and is inserted in the central position between the two parallel inner walls in the constraint outer sleeve in the shape of a long-tube rectangle, the iron rods penetrate through the energy dissipation inner core and are bilaterally symmetrical, and the installation position of the torsion spring and the limiting position of the spring force arm of the torsion spring are symmetrical by taking the penetrated energy dissipation inner core as the center.
Furthermore, the torsion spring is made of memory alloy and consists of a spiral spring and force arms connected to two end parts of the spiral spring.
Furthermore, the second torsion instability prevention device comprises a steel plate, the steel plate with a rack, a gear, a vortex spring and a support frame, the steel plate is connected with the other end part of the energy consumption inner core, the two steel plates with the racks are respectively and symmetrically fixed on two side surfaces of the steel plate, a gear meshed with the rack is installed between the steel plate with the rack and the inner wall of the constraint outer sleeve opposite and parallel to the steel plate, the two vortex springs limited on the parallel inner wall are directly fixed on the upper side and the lower side of the gear, and the gear and the vortex spring are fixed between the steel plate with the rack and the inner wall of the constraint outer sleeve opposite and parallel to the steel plate with the rack by the support frame extending out of the parallel inner wall.
Furthermore, the support frame comprises two cross frames fixed on the parallel inner walls, the two cross frames are respectively positioned above the two vortex springs, and a vertical shaft penetrates through the cross frames, the vortex springs and the gears.
Furthermore, the vortex spring is limited on the parallel inner wall by a limiting clamping groove.
Furthermore, the steel plate and the steel plate with the rack are provided with bolt holes, and the steel plate with the rack are tightly connected through bolts.
Furthermore, the vortex spring is made of memory alloy and consists of a vortex spring body and force arms connected to two end parts of the vortex spring.
Has the advantages that: the torsion anti-instability device is arranged, the axial load bearing of the energy consumption inner core is dispersed in a torsion plane to bear, the torsion anti-instability device comprises two torsion anti-instability devices which are respectively positioned at two end parts of the energy consumption inner core, and the torsion plane is formed in the space near two terminals of the energy consumption inner core, so that the requirement on the correction of the energy consumption inner core is stronger, the two positions are held, the correction can be started at the source, the deformation transmission is avoided as much as possible, the deformation interval can be further reduced, and the deformation inhibiting capability is stronger.
The two torsion instability prevention devices are different in structure, one torsion force of the torsion spring is used, and the other torsion force of the vortex spring is used, so that on one hand, the energy consumption burden of the energy-consuming inner core is greatly reduced, the instability of the inner core is reduced, the replacement frequency of the inner core is reduced, and the maintenance cost is reduced; on the other hand, the spring becomes an energy consumption main body, the torsion force of the torsion spring is fully utilized, the load bearing capacity is stronger, and the spring is not easy to destabilize; on the other hand, the deformation of the inner core can be corrected by using the torsional force while the spring consumes energy, so that the service life of the energy-consuming inner core is further prolonged, and the support has self-resetting capability.
In particular, in the second torsion unstability preventing device, a gear is mounted at the end of a support, racks meshed with the gear are mounted on two side surfaces of an inner core, two scroll springs limited on the parallel inner walls are directly fixed (contactingly fixed) on the upper side and the lower side of the gear, and the gear and the scroll springs are fixed between the steel plate with the racks and the inner wall of the opposite and parallel constraint outer sleeve by a support frame extending from the parallel inner walls. The axial load bearing of the energy-consuming inner core is dispersed on the spring vortex plane to bear, so that on one hand, the energy-consuming burden of the energy-consuming inner core is greatly reduced, the inner core instability is reduced, the replacement frequency of the inner core is reduced, and the maintenance cost is reduced; on the other hand, the spring becomes an energy consumption main body, the torsion force of the vortex spring is fully utilized, the load bearing capacity is stronger, and the spring is not easy to destabilize; on the other hand, the deformation of the inner core can be corrected by using the torsional force while the energy consumption of the vortex rotation spring is realized, the service time of the energy consumption inner core is further prolonged, and the self-resetting capability of the support is realized. More importantly, in order to obtain larger torsional force, the vortex spring is used, but the vortex spring can cause that the sensitivity to vibration is reduced, in order to make up for the defect, the meshing of the symmetrical gears and the racks on two sides is used for consuming energy during initial vibration, when the vibration strength reaches the working strength of the vortex spring, the vortex spring provides large torsional force to resist deformation and enhance the instability prevention capability, and by means of the measure, the composite instability prevention device with higher sensitivity can still be obtained by using the strong torsional force of the vortex spring on the premise of not sacrificing the vibration sensitivity.
Drawings
Fig. 1 is a schematic structural appearance.
Fig. 2 is a schematic view of the composition of the energy-dissipating core.
Fig. 3 is a sectional position view.
FIG. 4 is an exploded view of the constraining outer sleeve.
Fig. 5 is a cross-sectional view taken at 1-1 of fig. 3.
Fig. 6 is a cross-sectional view taken at 2-2 of fig. 3.
Fig. 7 is a cross-sectional view of 3-3 of fig. 3.
Fig. 8 is a cross-sectional view 4-4 of fig. 3.
FIG. 9 is a view of the gear and scroll spring assembly.
Wherein: 1. the energy-consuming device comprises an energy-consuming inner core, 2 parts of torsion springs, 3 parts of guide iron bars, 4 parts of limiting clamps, 5 parts of baffles, 6 parts of connecting plates, 7 parts of constraint outer sleeves, 8 parts of steel plates, 9 parts of steel plates with racks, 10 parts of parallel inner walls, 11 parts of racks, 12 parts of gears, 13 parts of vortex springs, 14 parts of cross frames, 15 parts of vertical shafts and 16 parts of limiting clamp grooves.
Detailed Description
Example (b): a buckling restrained brace with a double-torsion anti-instability device comprises an energy consumption inner core 1, a baffle 5, a connecting plate 6 and a restraining outer sleeve, wherein the restraining outer sleeve 7 is covered on the periphery of the energy consumption inner core 1, the restraining outer sleeve 7 extends outwards from two end parts in the axial direction of the energy consumption inner core 1 and is connected to the connecting plate 6 through the baffle 5, the restraining outer sleeve 7 is provided with a group of opposite and parallel inner walls 10, the energy consumption inner core 1 is parallel to the energy consumption outer sleeve, and the energy consumption inner core 1 is covered in a space between one end part inside the restraining outer sleeve 7 and the inner wall of the restraining outer sleeve 7 corresponding to the end part in the axial direction; and a second torsion instability-preventing device is arranged in a space between the other end part of the energy-consuming inner core 1 and the inner wall of the constraint outer sleeve 7 corresponding to the end part. The energy dissipation inner core of the part is provided with two side surfaces, the inner wall of the outer sleeve is restrained correspondingly to each side surface, namely the parallel inner wall, and torsion anti-instability devices (a first torsion anti-instability device and a second torsion anti-instability device) are arranged between the two parallel inner walls and the two side surfaces of the energy dissipation inner core. The end portion is 3cm-10cm from the end of the energy dissipating core, but may be smaller or larger. In practice, we find that, the closer to the starting position of load transmission, the more corresponding to the ending position of the real position, that is, the space near the two terminals of the energy-consuming inner core, the torsion spring is used to form a torsion plane, which requires stronger correction demand on the energy-consuming inner core, and holding the two positions can start correction at the source, and does not make deformation transmission as much as possible, thereby further reducing the deformation interval, and having stronger capability of inhibiting deformation.
In this embodiment, the first torsion instability prevention device includes a torsion spring 2, a limiting clamp 4 and a guiding iron rod 3, the guiding iron rod 3 penetrates through the energy dissipation inner core 1 (from top to bottom, the through hole is located at the one end of the energy dissipation inner core) in the direction perpendicular to the axis of the energy dissipation inner core 1 and is fixed on the energy dissipation inner core 1, two sides of the iron core exposed in the space are covered by the torsion spring 2, and the spring force arms connected with the torsion spring 2 body are respectively limited by the limiting clamp 4 at the upper side and the lower side of a torsion plane formed when the torsion spring 2 is twisted. In this embodiment, the end of the dissipative core on the first torsion destabilizing preventing device side is directly connected to the baffle and is connected to the connection plate by the baffle.
In this embodiment, the energy dissipation inner core 1 is a long rectangular body, and is inserted into the substantially central position inside the restraining outer sleeve 7 shaped as a long rectangular cylinder, the iron rods penetrate through the energy dissipation inner core 1 and are bilaterally symmetrical, and the installation position of the torsion spring 2 and the limiting position of the spring arm thereof are symmetrical with the penetrated energy dissipation inner core 1 as the center. The central symmetry sets up for the reaction force of two planes of torsion is more unanimous, and is better to deformation correction, and twists reverse the equal effect of plane power consumption. Furthermore, in general, the energy dissipating inner core will have a portion outside the constraining outer sleeve that is more weakened and subject to failure due to direct exposure and free support than the energy dissipating inner core inside the constraining outer sleeve. The steel plate, the gear, the rack and the vortex spring are combined in a limiting mode, the steel plate is exposed out of the part of the constraint outer sleeve, the energy-consuming inner core is replaced by the steel plate, the steel plate with the rack is fixed with the steel plate in a bolt fixing connection mode, and therefore the rack is fixed, and although the part is not covered by the energy-consuming inner core, the strength of the exposed part is enhanced to a certain degree; the vortex spring makes the linear displacement of power consumption inner core change into the angle displacement to, it is in near the tip (being close to naked steel sheet part), thereby make spacing vortex spring, the gear of meshing and rack and support frame can form the frame in this naked steel sheet, have certain supporting role, and receive vortex spring's torsional force, on the basis of supporting, greatly reduce this naked part motion (rocking and swing) under the load effect, thereby can shorten the range of connection region, this scheme has realized the purpose that prevents the unstability.
In this embodiment, the second torsion unstability-preventing device comprises a steel plate, a steel plate 9 with a rack, a gear 12, a scroll spring 13 and a support frame, in this embodiment, the energy dissipation core 1 on the second torsion unstability-preventing device side is not directly connected with the baffle 5, the energy dissipation core 1 is connected with the steel plate 8, the steel plate 8 is connected with the baffle 5, and the baffle 5 is connected with the connecting plate 6. That is, the steel plate 8 is connected to the other end of the energy dissipating core 1, two steel plates 8 with racks are symmetrically fixed to two side surfaces of the steel plate 8 (the side surfaces are parallel surfaces parallel to the parallel inner walls, preferably, the steel plate and the steel plate with racks have bolt holes, the steel plate and the steel plate with racks are tightly connected by bolts), a gear 12 engaged with the rack 11 is installed between each steel plate 9 with racks and the inner wall of the constraint outer sleeve 7 opposite and parallel to each other, two scroll springs 13 limited on the parallel inner walls are directly fixed to the upper and lower sides of the gear 12, the gear and the scroll springs are fixed between the steel plate with racks and the inner wall of the constraint outer sleeve opposite and parallel to each other by a support frame extending from the parallel inner walls, the support frame includes two cross frames 14 fixed to the parallel inner walls, the two vortex springs are respectively positioned above the two vortex springs 13, and a vertical shaft 15 penetrates through the cross frame 14, the vortex springs 13 and the gear 12, and the vortex springs 13 are limited on the parallel inner walls by limiting clamping grooves 16. Therefore, the energy-consuming inner core is used as the central line in the scheme, the gears, the vortex springs and the racks on the two sides are symmetrically installed respectively, and the centers of the gears, the vortex springs and the racks are symmetrically arranged, so that the reaction force of the two vortex planes is more consistent, the deformation correction is realized, and the energy-consuming effect of the vortex planes is better. In this embodiment, the space near the entire energy-consuming core has the possibility of installing the gear spring, however, in practice, it is found that, the closer to the starting position of the load transmission, the corresponding to the ending position of the starting position, that is, the space near the two terminals of the energy-consuming core, the more the torsion plane is formed by using the vortex spring, the stronger the correction requirement on the energy-consuming core is needed, and the two positions are held, the correction can be started at the source, the deformation transmission is not caused as much as possible, so that the deformation interval can be further reduced, the deformation inhibiting capability is stronger, and therefore, the scheme is formed by selecting the mode of using the connecting steel plates to be arranged at the two ends of the core and installing the racks on the connecting steel plates. Furthermore, generally speaking, the energy dissipating inner core will have a portion outside the constraining outer sleeve, which is directly exposed, and which is weaker and more vulnerable to damage than the energy dissipating inner core inside the constraining outer sleeve due to being unconstrained and supported. The torsion instability device is used, the limiting combination of the guide iron rod and the torsion spring enables the linear displacement of the energy consumption inner core to be converted into angular displacement, the torsion instability device is located near the end portion (close to the exposed energy consumption inner core portion), so that the guide iron rod can form a frame on the exposed energy consumption inner core portion, a certain supporting effect is achieved, the torsion force of the torsion spring is received, on the basis of supporting, the movement (swinging and swinging) of the exposed portion under the action of load is greatly reduced, the range of a connecting area can be shortened, and the purpose of preventing instability is achieved.
In one embodiment, the torsion spring and/or the scroll spring is made of a shape memory alloy. The torsion spring is composed of a spiral spring and force arms connected to two end parts of the spiral spring, the vortex spring is composed of a vortex spring body and force arms connected to two end parts of the vortex spring, and the superelasticity characteristic of the shape memory alloy has many advantages compared with other common metal materials: firstly, the superelasticity fatigue property of the shape memory alloy is good, and other materials are inevitably damaged in circulation, so that the service life is influenced; secondly, the shape memory alloy has a large recoverable strain value, which is difficult to realize by common metal materials; finally, because the austenite phase has a higher elastic modulus than the martensite phase, the shape memory alloy has an increased elastic modulus with increasing temperature (as opposed to common metals), which allows it to maintain a higher elastic modulus at higher temperatures. Thus, the spring portion of the device can be made of a shape memory alloy.
In the buckling restrained brace with the double-torsion buckling-restrained device in each example, under the action of an earthquake, the energy-consuming inner core is subjected to the load transmitted from the building, and the energy-consuming inner core deforms:
in one embodiment, on the first torsion unstability-preventing device side:
the torsion spring is limited on the upper side and the lower side of a torsion plane formed when the torsion spring is twisted, and the torsion force of the torsion spring drives the energy consumption inner core to move in a direction opposite to the deformation direction, so that the shape and the position of the energy consumption inner core return to the natural state. Therefore, in order to reduce the effect of vibration on the structure, the buckling-restrained brace with the double-torsion buckling-restrained device in each case is subjected to buckling-restrained reinforcement design on the end part aiming at the traditional buckling-restrained brace with the double-torsion buckling-restrained device, and the damage of the inner core is relieved. And in case of earthquake, the working capacity of the support is improved. The anti-buckling support energy dissipation inner core with the double-torsion anti-instability device, the torsion spring and the limiting clamp on the outer sleeve work together, so that the anti-buckling support energy dissipation inner core has a certain self-resetting function, and damage of the inner core is relieved. The torsion spring belongs to the group of helical springs, the ends of which are fixed to the other components, which, when they rotate around the spring centre, pull them back to the initial position, generating a torque or rotational force. The torsion spring can store and release angular energy or statically hold a device by rotating a moment arm about the central axis of the spring body. The limiting clamp can limit the position of the torsion spring, can play a role in fixing the spring, and can also play a role in limiting a bonding material and an inner core. The device is simple and easy to operate, can be connected in an assembling mode, is convenient to disassemble, and facilitates repair and daily maintenance after an earthquake. Under the action of earthquake, the energy-consuming inner core can be subjected to load transmitted from a building, the inner core can deform, the inner core drives the torsion spring to deform, and torque is generated in a plane, so that the energy-consuming inner core has higher torque. Because the existence of the inner core limiting clamping groove, the generated torsion can drive the inner core to move, so that the inner core returns to the original position, and the device has a self-resetting function. When the structure is subjected to earthquake action, the end part is in a pressed or pulled state, and self-resetting can be realized through the restoring force of the torsion spring, so that the pressed deformation of the inner core is reduced, the energy consumption capability is improved, the integral stability can be ensured after the inner core is yielded, and the normal work of the support is not influenced.
In one embodiment, on the second torsion unstability-preventing device side:
under the action of an earthquake, the energy-consuming inner core deforms, the deformation of the energy-consuming inner core causes the gears on two sides of the energy-consuming inner core to be meshed with the racks on the steel plate within a certain load range, and the deformation enables the gears to drive the racks to move towards the opposite direction of the deformation of the energy-consuming inner core, so that the shape and the position of the energy-consuming inner core connected with the gears are restored towards the natural state; when the load range is exceeded (the restoring force of the gear cannot restore the energy consumption inner core), the vortex springs fixed on the upper side and the lower side of the gear are deformed due to the deformation of the energy consumption inner core and generate torque in a plane, the vortex springs are limited on the parallel inner wall, the restoring force generated by the vortex springs enables the gear to drive the rack to move towards the opposite direction of the deformation of the energy consumption inner core, and therefore the shape and the position of the energy consumption inner core connected with the gear are restored towards the natural state. Therefore, the main purpose of the present disclosure is to provide a self-resetting device for alleviating the impact of vibration on the structure, and to solve the problem of damage to the inner core, in view of the design of the conventional buckling-restrained brace. Under the action of earthquake, the supporting capability is improved. The anti-buckling support energy dissipation inner core with the double-torsion anti-buckling device, the gear, the vortex spring and the limiting clamp on the outer sleeve work together to convert integrally generated linear displacement into angular displacement, and the anti-buckling support energy dissipation inner core with the double-torsion anti-buckling device has a certain self-resetting function and slows down damage of the inner core. The problem that the inner core stroke cannot be met due to the fact that the spring corner is too small is solved through the gear.
After the vortex spring is deformed, the material is subjected to bending moment to generate bending elastic deformation, so that the spring generates torsion on the plane of the spring. The deformation angle is in direct proportion to the torque, has high torque, applies multi-angle torsion moment to a mechanism doing work for a long time, and has the characteristic of low fatigue. The utility model discloses simple easy operation can be connected through the mode of equipment, and it is convenient and convenient to dismantle and repair and daily maintenance after the shake.
In this embodiment, the spring is connected through the riveting mode with the gear, guarantees that the spring can rotate with the gear together.
The implementation method comprises the following steps: under the action of earthquake, the inner core can bear load and deform, the inner core can drive the vortex spring to deform, torque is generated in a plane, and high torque is achieved. Because the existence of the inner core limiting clamping groove, the generated torsion can drive the inner core to move, so that the inner core returns to the original position, and the device has a self-resetting function.
When the structure receives earthquake action, the end part can realize self-resetting through the restoring force of the vortex spring no matter the end part is pressed or pulled, the pressed deformation of the inner core is reduced, the energy consumption capability is improved, the integral stability can be ensured after the inner core is yielded, and the anti-seismic performance and the survival capability of the structure are improved.
The above description is only for the purpose of creating a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution and the inventive concept of the present invention within the technical scope of the present invention.
Claims (1)
1. A method for installing a double-torsion buckling-restrained device of a buckling-restrained brace is characterized by comprising the following steps of: respectively installing two torsion instability prevention devices at two end parts of the energy consumption inner core, wherein the end parts are 3cm-10cm from the tail end of the energy consumption inner core;
the buckling restrained brace comprises an energy consumption inner core (1), a baffle (5), a connecting plate (6) and a restraining outer sleeve (7), wherein the restraining outer sleeve (7) is covered on the periphery of the energy consumption inner core (1), the restraining outer sleeve (7) extends outwards from two end parts in the axial direction of the energy consumption inner core (1), and is connected to the connecting plate (6) through the baffle (5), the restraining outer sleeve (7) is provided with a group of opposite and parallel inner walls (10), the energy consumption inner core (1) is parallel to the energy consumption outer sleeve, the energy consumption inner core (1) is covered on one end part in the restraining outer sleeve (7) in the axial direction of the energy consumption inner core and a first torsion instability prevention device is arranged in a space between the end part and the inner wall of the restraining; a second torsion anti-instability device is arranged in a space between the other end of the energy consumption inner core (1) and the inner wall of the constraint outer sleeve (7) corresponding to the end;
the first torsion instability preventing device comprises a torsion spring (2), a limiting clamp (4) and a guide iron rod (3), wherein the guide iron rod (3) penetrates through the energy consumption inner core (1) in the direction perpendicular to the axis of the energy consumption inner core (1) and is fixed on the energy consumption inner core (1), two sides of the guide iron rod (3) exposed in the space are covered and connected with the torsion spring (2) through the torsion spring, and the spring force arms connected with the torsion spring (2) are limited on the upper side and the lower side of a torsion plane formed when the torsion spring (2) is twisted through the limiting clamp (4) respectively;
the second torsion instability preventing device comprises a steel plate, a steel plate (9) with a rack, a gear (12), a vortex spring (13) and a support frame, wherein the steel plate is connected with the other end of the energy consumption inner core, the two steel plates (9) with the racks are respectively and symmetrically fixed on two side faces of the steel plate, the gear (12) meshed with the rack is installed between the steel plate (9) with the racks and the inner wall of the relative and parallel constraint outer sleeve, the two vortex springs (13) limited on the parallel inner wall (10) are directly fixed on the upper side and the lower side of the gear (12), and the gear (12) and the vortex spring (13) are fixed between the steel plate (9) with the racks and the inner wall of the relative and parallel constraint outer sleeve by the support frame extending out of the parallel inner wall (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811052470.7A CN108952288B (en) | 2017-05-17 | 2017-05-17 | Installation method of double-torsion anti-buckling device of buckling-restrained brace |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710348998.8A CN107100406B (en) | 2017-05-17 | 2017-05-17 | Anti-buckling support with double anti-unstability devices of torsion |
| CN201811052470.7A CN108952288B (en) | 2017-05-17 | 2017-05-17 | Installation method of double-torsion anti-buckling device of buckling-restrained brace |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710348998.8A Division CN107100406B (en) | 2017-05-17 | 2017-05-17 | Anti-buckling support with double anti-unstability devices of torsion |
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| Publication Number | Publication Date |
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| CN108952288A CN108952288A (en) | 2018-12-07 |
| CN108952288B true CN108952288B (en) | 2021-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811050839.0A Active CN109025451B (en) | 2017-05-17 | 2017-05-17 | Double-torsion anti-destabilization method |
| CN201710348998.8A Active CN107100406B (en) | 2017-05-17 | 2017-05-17 | Anti-buckling support with double anti-unstability devices of torsion |
| CN201811051871.0A Active CN109057490B (en) | 2017-05-17 | 2017-05-17 | Support frame of double-torsion anti-instability device |
| CN201811052456.7A Active CN109098515B (en) | 2017-05-17 | 2017-05-17 | Energy-consuming inner core of anti-destabilization device |
| CN201811051858.5A Active CN109057489B (en) | 2017-05-17 | 2017-05-17 | Torsion anti-instability device |
| CN201811052470.7A Active CN108952288B (en) | 2017-05-17 | 2017-05-17 | Installation method of double-torsion anti-buckling device of buckling-restrained brace |
| CN201711358206.1A Active CN108035597B (en) | 2017-05-17 | 2017-05-17 | Anti- unstability device |
| CN201711358184.9A Active CN108104563B (en) | 2017-05-17 | 2017-05-17 | Self-resetting method of buckling-restrained brace with double-torsion buckling-restrained device |
Family Applications Before (5)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811050839.0A Active CN109025451B (en) | 2017-05-17 | 2017-05-17 | Double-torsion anti-destabilization method |
| CN201710348998.8A Active CN107100406B (en) | 2017-05-17 | 2017-05-17 | Anti-buckling support with double anti-unstability devices of torsion |
| CN201811051871.0A Active CN109057490B (en) | 2017-05-17 | 2017-05-17 | Support frame of double-torsion anti-instability device |
| CN201811052456.7A Active CN109098515B (en) | 2017-05-17 | 2017-05-17 | Energy-consuming inner core of anti-destabilization device |
| CN201811051858.5A Active CN109057489B (en) | 2017-05-17 | 2017-05-17 | Torsion anti-instability device |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711358206.1A Active CN108035597B (en) | 2017-05-17 | 2017-05-17 | Anti- unstability device |
| CN201711358184.9A Active CN108104563B (en) | 2017-05-17 | 2017-05-17 | Self-resetting method of buckling-restrained brace with double-torsion buckling-restrained device |
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| CN112282211B (en) * | 2020-11-06 | 2022-04-22 | 华东建筑设计研究院有限公司 | Simply supported truss structure for preventing lateral instability |
| CN115370960B (en) * | 2022-08-12 | 2023-10-24 | 北京天海低温设备有限公司 | Support structure and liquid hydrogen vertical storage tank |
| CN115233852B (en) * | 2022-08-24 | 2023-06-13 | 福建省中霖工程建设有限公司 | Buckling restrained brace with additional electromagnetic damper and installation method thereof |
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2017
- 2017-05-17 CN CN201811050839.0A patent/CN109025451B/en active Active
- 2017-05-17 CN CN201710348998.8A patent/CN107100406B/en active Active
- 2017-05-17 CN CN201811051871.0A patent/CN109057490B/en active Active
- 2017-05-17 CN CN201811052456.7A patent/CN109098515B/en active Active
- 2017-05-17 CN CN201811051858.5A patent/CN109057489B/en active Active
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Also Published As
| Publication number | Publication date |
|---|---|
| CN109057490A (en) | 2018-12-21 |
| CN107100406A (en) | 2017-08-29 |
| CN109098515B (en) | 2020-06-12 |
| CN108104563B (en) | 2020-05-19 |
| CN108952288A (en) | 2018-12-07 |
| CN108035597A (en) | 2018-05-15 |
| CN108104563A (en) | 2018-06-01 |
| CN108035597B (en) | 2019-10-08 |
| CN109098515A (en) | 2018-12-28 |
| CN109057490B (en) | 2020-05-22 |
| CN109025451B (en) | 2020-04-07 |
| CN109057489B (en) | 2020-06-02 |
| CN109057489A (en) | 2018-12-21 |
| CN107100406B (en) | 2018-11-27 |
| CN109025451A (en) | 2018-12-18 |
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