15 results about "Buckling-restrained brace" patented technology

This invention discloses a method and system for reinforcing old buildings in urban renewal, comprising the following steps: comprehensive diagnosis and performance evaluation of the old building; decision-making on the structural reinforcement system based on the performance evaluation results to obtain the optimal structural reinforcement system; reinforcement of key components and nodes of the old building according to the optimal structural reinforcement system; predictive maintenance of the reinforced old building through collaborative improvement and real-time monitoring; integration of three-dimensional laser scanning, finite element analysis, and various material performance testing technologies to accurately assess the current state of the building; and the use of high-performance composite mortar wire mesh, carbon fiber cloth, and buckling restraint braces to enhance the structural bearing capacity and seismic toughness. Simultaneously, combined with integrated structural-insulation design and long-term health monitoring, this method enhances safety while also considering energy conservation, environmental protection, and historical preservation, exhibiting significant advantages such as data-driven approach, toughness priority, functional synergy, and intelligent operation and maintenance. This invention is rationally designed, compact in structure, and easy to use.

The application discloses a high-ductility fracture-free double-yield-point buckling-restrained brace with a cross-shaped steel negative Poisson's ratio core and a multi-storey or high-rise fabricated building, and the buckling-restrained brace comprises a cross-shaped steel first-order core, a corner steel second-order core, and corner steel peripheral constraints; the cross-shaped steel first-order core comprises a middle negative Poisson's ratio weakening area one in the middle of the cross-shaped steel; the corner steel second-order core comprises a middle negative Poisson's ratio weakening area two in the middle of the corner steel; the corner steel peripheral constraints comprise a middle pre-tightening area in the middle of the corner steel; four groups of the corner steel second-order core are respectively arranged at four corners of the cross-shaped steel first-order core; four groups of the corner steel peripheral constraints are respectively arranged at peripheries of the four groups of the corner steel second-order core and are pre-tightened in the middle pre-tightening area; the cross-shaped steel first-order core can produce a first displacement longitudinal sliding relative to the corner steel second-order core; the corner steel second-order core can produce a second displacement longitudinal sliding relative to the corner steel peripheral constraints; and the second displacement is greater than the first displacement. The application aims to solve the problems of the buckling-restrained brace, such as insufficient ductility, easy fracture and limited energy dissipation of the core under an earthquake.

The application relates to a self-resetting buckling restrained brace based on disc spring resetting and slope core plate energy dissipation, which comprises a shell, a slope core plate, a fixed restraint cover plate assembly, disc springs and a movable restraint cover plate assembly; the upper surface and the lower surface of the slope core plate are uniformly arranged with the movable restraint cover plate assembly, the inner side of the end part of the movable restraint cover plate assembly relative to the slope core plate is provided with a movable cover plate self-resetting slope, the movable cover plate self-resetting slope is matched and contacted with the core plate slope protrusion on the same side; the outer side of the end part of the movable restraint cover plate assembly relative to the slope core plate is provided with a plurality of disc springs; the fixed restraint cover plate assembly is installed between the core plate energy dissipation section and the movable restraint cover plate assembly on the upper surface or the lower surface of the slope core plate, the fixed restraint cover plate assembly is fixed with the shell covered outside the whole structure through a plurality of fixed cover plate bolts penetrating the movable restraint cover plate assembly on the same side. The application simplifies the structure and can automatically restore to the initial state after plastic deformation under external force.

The application provides a one-word peanut hole net inner core double-yield-point perforated pull joint type fabricated buckling restrained brace and a multi-story or high-rise fabricated building. The buckling restrained brace comprises: a one-word steel first-order inner core, a one-word steel second-order inner core, and a channel steel peripheral restraint. The one-word steel first-order inner core comprises a middle peanut hole net weakening area one in the middle of the steel. The one-word steel second-order inner core comprises a middle peanut hole net weakening area two in the middle of the steel. The channel steel peripheral restraint comprises a middle restraint area in the middle of the channel steel. The two sets of channel steel peripheral restraints, the two sets of one-word steel second-order inner cores and the two sets of one-word steel first-order inner cores are fixed by high-strength bolt perforation pull joints from outside to inside. The one-word steel first-order inner core can produce a first displacement longitudinal sliding relative to the one-word steel second-order inner core. The one-word steel second-order inner core can produce a second displacement longitudinal sliding relative to the channel steel peripheral restraint. The application realizes double-stage energy dissipation through the first-order and second-order negative Poisson's ratio energy dissipation inner cores, and effectively improves the mechanical properties of the support.

The application discloses a metal energy dissipation support, which comprises an outer sleeve connecting end, an inner core rod connecting end and at least one set of energy dissipation modules; the energy dissipation module comprises an outer sleeve and an inner core rod, the inner core rod is provided with a metal energy dissipation plate, the inner wall of the outer sleeve is provided with an energy dissipation limiting component, the inner core rod is arranged in the outer sleeve, and the metal energy dissipation plate on the inner core rod is in limiting cooperation with the energy dissipation limiting component on the inner wall of the outer sleeve; the outer sleeve connecting end is connected with one end of the outer sleeve and forms a certain gap between the inner core rod in the outer sleeve; the inner core rod is connected with the inner core rod in the other end of the outer sleeve and forms a certain gap between the other end of the outer sleeve. The metal energy dissipation support can effectively comprehensively integrate the advantages of traditional metal dampers and buckling restrained braces by adopting the energy dissipation support form and the mode of dissipating seismic energy through metal bending deformation, and is modularized and assembled, so that the practicability is greatly improved.

To provide a buckling-restrained brace that can effectively suppress the separation of restraining members even when the tensile force acting on the fasteners connecting the pair of restraining members during higher-order buckling of the core material causes the restraining members to separate. [Solution] The buckling-restraining brace 100 has a steel plate-shaped core material 10 and a wooden restraining body 20 formed by a pair of restraining members 30. The outer circumferential surface 31 of one restraining member 30A is provided with a plurality of countersunk grooves 34, and a first through hole 38 is provided that extends from each countersunk groove 34 to the contact surface 32. A lag screw bolt 50, equipped with male threads 51 and female threads 52, is embedded in the other restraining member 30B from the contact surface 32 to the interior, and a plurality of fasteners 60 are inserted through the corresponding first through holes 38 and screwed into the female threads 56.

This utility model relates to the technical field of energy dissipation and vibration reduction in building engineering, and discloses a variable cross-section steel core buckling-restrained brace device, including a steel core, concrete, and restraint members. The steel core includes a connecting section, a transition section, and a working section. The transition section is connected to both the connecting section and the working section, and the yield strength of the working section is lower than that of the transition section or the connecting section. The restraint members cover the steel core and are connected to the steel core, forming a cavity between the restraint members and the steel core. The concrete is placed inside the cavity and is connected to both the steel core and the restraint members. The concrete is used to reinforce the steel core. The working section restricts the main energy-dissipating parts of the steel core, and the deformation direction of the working section is restrained by the concrete and the restraint members, enabling the working section to dissipate energy along its length, thus improving its energy dissipation capacity. This solves the technical problem of poor energy dissipation effect in the prior art and achieves a better energy dissipation effect for the steel core.

The present application relates to a kind of reverse friction buckling-restrained energy-dissipation brace and control method, including a no buckling energy-dissipation unit, a positive constraint unit and reverse constraint unit, positive constraint unit is set in the one end of no buckling energy-dissipation unit and with this end sliding connection;Reverse constraint unit is set in the other end of no buckling energy-dissipation unit and with this end fixed connection;Wherein, positive constraint unit and reverse constraint unit are oppositely arranged, when brace bears axial load, positive constraint unit and reverse constraint unit respectively follow no buckling energy-dissipation unit different end towards opposite direction movement, realize reverse friction mechanism.The reverse friction buckling-restrained energy-dissipation brace and control method, the double-stage yield of buckling energy-dissipation brace and support limiting device are fused, simultaneously make the friction force inside buckling-restrained energy-dissipation brace core self-balancing, promote the deformation uniformity of support to improve fatigue performance.The overall structure of support has no numerous external additional device, and the cost is low, convenient for engineering application.

This invention proposes a self-resetting graded energy-dissipating buckling restraint brace for rectangular steel tubes, mainly comprising: a rectangular steel tube self-resetting device, consisting of two rectangular steel tubes connected by a self-resetting connection device; a first-order energy-dissipating inner core, disposed on the upper and lower sides of the two rectangular steel tubes at the connection; a second-order energy-dissipating inner core, disposed on the left and right sides of the two rectangular steel tubes at the connection; and an outer rectangular buckling-restrained sleeve, fitted onto the two rectangular steel tubes at the connection, with its upper and lower sides connected to the first-order energy-dissipating inner core and the upper and lower sides of the two rectangular steel tubes, and its left and right sides connected to the second-order energy-dissipating inner core and the left and right sides of the two rectangular steel tubes; and the first-order energy-dissipating inner core and the rectangular steel tube self-resetting device are capable of axial sliding with a first displacement relative to the second-order energy-dissipating inner core and the outer rectangular buckling-restrained sleeve. This invention effectively improves the mechanical properties of the brace through the first-order and second-order negative Poisson's ratio sequential energy-dissipating inner cores and the disc spring reset device.

The utility model discloses a full -steel double core assembly type buckling restrained brace belongs to building structure damping technical field, and the application includes flange open -hole channel steel restraint unit, flange open -hole H section steel restraint unit, core plate unit, non -bonding layer and elastic connecting section stiffener, open -hole channel steel restraint unit, open -hole H section steel restraint unit constitute restraint unit, the elastic connecting section stiffener is welded in the core plate unit end portion and forms core unit, and the non -bonding material is arranged on the outer surface of core unit and forms non -bonding layer, and the cavity connected with external joint plate is formed between the end portion of two core units, and the core unit is placed in the restraint unit inside. The utility model can solve the traditional problem of buckling restrained brace production, application aspect such as high production difficulty, production machining precision difficult guarantee, low connection precision tolerance between support and main structure of large tonnage buckling restrained brace assembly production, and with the characteristics of the post -earthquake core unit replaceable, is applicable to the application of new construction and reinforcement engineering project.

The utility model relates to buckling restrained brace technical field discloses a kind of lightweight buckling-restrained energy dissipation brace, including outer steel pipe, the both ends of outer steel pipe are fixedly connected with sealing plate, multiple ventilation pipes are communicated between two sealing plates, multiple ventilation pipes are distributed in circle array, the outside of each sealing plate is fixedly connected with limit sleeve, each limit sleeve outside is rotatably connected with baffle, multiple ventilation holes are set on each baffle, the utility model is in the pouring cavity of outer steel pipe inside, setting multiple ventilation pipes distributed in circle array, when high temperature in summer, rotating baffle makes ventilation hole and ventilation pipe port keep consistent, when winter temperature reduces, rotating baffle makes ventilation hole and ventilation pipe port stagger and form block, to help weakening thermal expansion and cold shrinkage phenomenon brought by winter and summer extreme temperature, the influence of deformation caused to outer steel pipe and other structural members.

To provide a buckling-restrained brace that can suppress interference between the core material, the outer spacer, and the stiffening material when relative displacement occurs between the core material and the outer spacer and stiffening material during an earthquake. [Solution] The system comprises a core material 10 made of a steel plate, a pair of steel restraining members 30 arranged to face the two wide surfaces 11 of the core material 10, a pair of stiffening members 40 joined to both sides of the pair of restraining members 30 on the side of the core material 10 and extending in the longitudinal direction of the core material 10, and a pair of outer spacers 45 extending in the longitudinal direction of the stiffening members 40, with the length of the outer spacers 45 being shorter than the length of the stiffening members 40 in the longitudinal direction, and a first gap G1 being provided between the inner surface 41 of the end 43 of the stiffening member 40 and the narrow surface 12 of the core material 10.

To provide a buckling-restraining brace that can suppress the separation of restraining members even when the tensile force acting on the fasteners connecting the pair of restraining members during higher-order buckling of the core material causes the restraining members to separate, without compromising the aesthetic appearance. [Solution] The buckling-restraining brace 100 has a steel plate-shaped core material 10 and a wooden restraining body 20 formed by a pair of restraining members 30. Multiple countersunk grooves 34 are provided on the outer circumferential surface 31 of one of the restraining members 30A. A first lag screw bolt 50A, equipped with a male thread 51 and a first through hole 52, is embedded in the restraining member 30A, extending from each countersunk groove 34 to the contact surface 32. A second lag screw bolt 50B, equipped with a male thread 55 and a female thread 56, is embedded in the other restraining member 30B from the contact surface 32 to the interior. Multiple fasteners 60 are inserted through the corresponding first through holes 52 and screwed into the female threads 56.

The present invention relates to a buckling-restrained brace having a core material equipped with protrusions for preventing shearing, and aims to provide a buckling-restrained brace that can overcome the challenges of attaching the protrusions to the core material by welding, and that allows for easy setting of the length, shape, and strength of the protrusions. [Solution] The core material 10 is made of a steel plate, and a pair of steel restraining members 30 are arranged to face a pair of wide surfaces 11 of the core material 10. A pair of stiffening members 40 are joined to both sides of the pair of restraining members 30 on the side of the core material 10 and extend in the longitudinal direction of the core material 10. A projection 14 that protrudes toward the stiffening member is provided on at least one of the pair of narrow surfaces 12 of the core material 10 as an integrally molded member of the core material 10, and the projection 14 fits into a groove 45 provided on at least one of the pair of stiffening members 40.