47results about How to "Reduce post-earthquake repair costs" patented technology

The invention discloses a special-shaped steel column frame structure joint easy to restore after an earthquake. According to the special-shaped steel column frame structure joint easy to restore after the earthquake, a double-groove steel beam is connected with a special-shaped column through a beam-end sealing plate, so that a welding-line-free full-bolt connecting form is formed; a prestress steel cable is applied to a welding-line-free full-bolt joint, so that the prestress self-reset joint easy to restore after the earthquake is formed. By the adoption of a prestress self-reset joint form, self-reset of the joint after the earthquake is achieved, and restoring cost after the earthquake is greatly reduced; the shock resistance of the joint is improved, and thus the shock resistance of a frame structure system is improved; compared with a traditional steel-structural construction joint, the special-shaped steel column frame structure joint easy to restore after the earthquake has the advantages that the safety performance is high, environmental pollution is light, the number of safety accidents is small, and construction cost is low.

The invention discloses a novel special-shaped steel column frame-steel plate shear wall easy to restore after an earthquake. According to the novel special-shaped steel column frame-steel plate shear wall easy to restore after the earthquake, a double-groove steel beam is connected with a special-shaped column through a beam-end sealing plate, so that a welding-line-free full-bolt connecting form is formed; a prestress steel cable is applied to a welding-line-free full-bolt joint, so that a prestress self-reset joint is formed; a self-reset column base and a prestress column base are used for optimizing the axial mechanical performance and the horizontal mechanical performance of the bottom of the column through a reinforcing plate, a bend-preventing steel plate is mainly used for dissipating energy of the earthquake, and a shear plate is used for preventing local deformation, caused by excessive shearing force, of the bottom of the column; the key component of the prestress column base is a prestress pull rod, the pull rod is used for providing precompression for the column so that the column can be tightly connected with the beam, as a result, approximate rigid connection can be achieved when the prestress column base bears small bending moment, and the self-reset capacity of the prestress column base after the earthquake is achieved; better shock resistance of the structure is achieved due to the steel plate shear wall.

The invention discloses a frame beam and column connecting joint comprising a replaceable energy dissipation part. The frame beam and column connecting joint comprises a frame column, a frame beam, the energy dissipation part and a restraining plate,wherein the frame beam includes a beam body section, a wing plate and a web plate; the energy dissipation part comprises an energy dissipation plate and a connecting lug plate, the energy dissipation plate includes an energy dissipation section, a column side connecting section and a beam side connecting section, wherein the column side connectingsection and the beam side connecting section are arranged at both ends of the energy dissipation section, the yield forces of the column side connecting section and the beam side connecting section are both greater than that of the energy dissipation section, the column side connecting section is detachably and fixedly connected with the frame column, the beam side connecting section is detachablyand fixedly connected with the frame beam, and the web plate is detachably connected with the connecting lug plate in a hinged mode; the restraining plate and the wing plate are correspondingly and fixedly arranged on both sides of the energy dissipation plate so as to limit sided displacement of the energy dissipation section, and gaps are arranged between the restraining plate and the energy dissipation section as well as between the wing plate and the energy dissipation section. According to the frame beam and column connecting joint, the ductility and energy dissipation capacity are high,the seismic performance is good, and the restoration efficiency is high after an earthquake, and the repairing cost is low.

Provided is a novel post-earthquake easy-to-repair steel irregular column framework. Double-channel steel beams of the framework are connected with irregular columns through beam end sealing plates to form a welding-gap-free full-bolt connection mode. Prestress steel cables are applied to welding-gap-free full-bolt nodes to form prestress self-resetting nodes. Axial and horizontal stress performance of the bottoms of the columns are optimized through reinforcing plates by self-resetting column legs and prestress column legs, bending-proof steel plates are mainly used for dissipating earthquake energy, and shearing plates are used for preventing shearing force from being too large and leading to local bending of the bottoms of the columns. Key members of the prestress column legs are prestress pull rods which are used for providing prestress for the columns to enable the columns to be closely connected with the beams, the column legs can be in rigid connection similarly when the torque borne by the column legs is small, and a post-earthquake self-resetting capability is achieved.

The invention discloses a memory alloy self-restoring heat dissipation damper. A first inner pulling and pressing board and an outer pulling and pressing board capable of sliding relatively are arranged. A self-restoring structure is formed by a vertical blocking board and a limiting blocking board set so as to convert relative motion of the inner pulling and pressing board and the outer pulling and pressing board to a pulled state of memory alloy rods. Damping cushion is realized by utilizing material performance of the memory alloy rods. When the stress is too large, friction layers betweenthe inner pulling and pressing board and the outer pulling and pressing board act in common so as to dissipate energy input of the structure, and dissipation of great energy is realized through friction deformation, and absorption of dissipated energy by stressed parts in a building structure in an earthquake is reduced, so that an effect of protecting the building structure is realized. The memory alloy rods in the damper can enable the damper after an earthquake to restore to an initial state, so that residual deformation of a building is reduced and even eliminated after the earthquake. Theinvention can provide comparatively large damping force and utilizes the memory alloy rods and the friction layers to dissipate energy in a graded manner. The cost of the damper is reduced and structural energy dissipation requirements of different phases are met.

The invention discloses an assembling multi-section beam steel frame capable of self-centering after earthquake. An I-beam is connected with special-shaped columns of different forms through a web angle steel and a flange angle steel to form a connecting form of full bolts without weld seams; a middle I-beam is connected with an end I-beam through a web connecting plate and a high-strength silicone rubber plate to form a connecting form of full bolts without weld seams with good ductility and high energy consumption; a prestressed steel cable is applied at the connecting part of the full boltswithout the weld seams of the middle I-beam and the end I-beam to form self-centering nodes after the prestressed earthquake, and after the nodes are connected in sequence, a precast concrete-profiled steel plate composite slab or a poured concrete slab is assembled to form an assembling multi-section beam steel frame structure system capable of self-centering after the earthquake.

The invention discloses a post-earthquake self-resetting assembled multi-section beam shear wall steel frame, which is characterized in that a I-shaped steel beam is connected with different forms ofspecial-shaped columns through web angle steel and flange angle steel to form a weldless full-bolt connection mode; a middle I-shaped beam is connected with end I-shaped beams through web connecting plates and high-strength silicone rubber plates to form a weldless full-bolt connection mode with good ductility and strong energy dissipation ability; prestressed steel cables are applied to the junction of the weldless full-bolt middle I-shaped beam and the end I-shaped beams to form prestressed post-earthquake self-resetting nodes, and prefabricated concrete-profiled steel plate composite floorslabs or poured concrete floor slabs are assembled after the nodes are sequentially connected to form a post-earthquake self-resetting assembled multi-section beam shear wall steel frame structure system.

The invention relates to a fabricated type self-resetting frame system capable of recovering functions, and belongs to the field of structural engineering. The fabricated type self-resetting frame system is composed of two square steel columns with cantilever beam sections, an I-shaped beam section, a group of self-resetting devices and two groups of connecting devices. According to the fabricatedtype self-resetting frame system capable of recovering the functions, welding parts of the connecting devices are finished in a factory, the welding precision and quality are easy to control, and theconstruction speed and quality are improved; lower flange outer covering plates are arranged in an outer covering plate mode, can be used as supports of the beam sections in the installing process and have good performance visibility and replacement decidability; the self-resetting devices can ensure a predetermined performance design purpose of the capacity of structural earthquake energy dissipation and reduces the post-earthquake repairing cost; and through the targeted design, the damage position of a structure occurs to energy dissipation components such as high-strength bolts and connecting plates which are easy to replace under the action of earthquake loads, post-earthquake repairing is convenient, and the fabricated type self-resetting frame system is suitable for the developmentrequirements of a fabricated steel structure capable of recovering the functions.

The invention discloses a fabricated multistory and high-rise prestressed self-resetting steel frame structure system provided with special-shaped columns, and relates to the technical field of structural engineering. The fabricated multistory and high-rise prestressed self-resetting steel frame structure system comprises fabricated profile steel plates and fabricated special-shaped columns, wherein the fabricated profile steel plates comprise profile steel beams consisting of steel channels and floor slabs; the fabricated profile steel plates are prefabricated in a factory; at the construction site, the fabricated profile steel plates are mutually spliced with flange plates of the fabricated special-shaped columns through beam-end blanking plates of the fabricated profile steel plates, and layers of the fabricated special-shaped columns are spliced at the site by bolts, so that a multilayer profile steel plate steel-frame structure is formed; and the fabricated profile steel plates and the fabricated special-shaped columns are prefabricated in the factory and assembled at the construction site by bolts.

The invention relates to a novel post-earthquake self-reset concrete framework-center supporting structural system, and belongs to the technical field of earthquake prevention and disaster reduction. The initial rigidity of an embedded type cup-shaped foundation is basically the same as the rigidity of a cast-in-place concrete structure, under the condition of a small interlayer displacement angle, prestressed steel keeps elasticity, energy consummation steel bars enter the plastic state to dissipate energy, and the embedded type cup-shaped foundation can reset to the initial position after the earthquake action. Compared with the prior art, the novel post-earthquake self-reset concrete framework-center supporting structural system overturns a traditional concrete structural building foundation, and basically solves the difficult problems that concrete structures are not easy to assemble and poor in ductility. Compared with the traditional concrete structural foundation, the novel post-earthquake self-reset concrete framework-center supporting structural system has the advantages of being high in safety performance, small in environmental pollution, few in accident, low in manufacturing cost of projects and the like.

The invention discloses an assembling multi-section beam center prestress support steel frame capable of self-centering after earthquake. An I-beam is connected with special-shaped columns of different forms through a web angle steel and a flange angle steel to form a connecting form of full bolts without weld seams; a middle I-beam is connected with an end I-beam through a web connecting plate and a high-strength silicone rubber plate to form a connecting form of full bolts without weld seams with good ductility and high energy consumption; a prestressed steel cable is applied at the connecting part of the full bolts without the weld seams of the middle I-beam and the end I-beam to form self-centering nodes after the prestressed earthquake, and after the nodes are connected in sequence, aprecast concrete-profiled steel plate composite slab or a poured concrete slab assembling prestress center support member is assembled to form an assembling multi-section beam center prestress support steel frame structure system capable of self-centering after the earthquake.

The invention relates to an assembly type self-resetting middle column connecting device capable of restoring functions, and belongs to the field of structural engineering. The device comprises a square steel tube middle column with two cantilever beam sections, two H-shaped beam sections, a self-resetting device and two connecting device bodies. Welding parts of the joint connecting device are all completed in a factory, the welding seam precision and quality are easier to control, and the construction speed and the construction quality can be improved; according to the anti-buckling idea, upper flange inner cover plates are arranged to be inner cover plates so as to control the buckling amplitude value of the flange cover plates, and lower flange outer cover plates are arranged to be outer cover plates, so that good performance visuality and replacement decidability are achieved; the self-resetting device can guarantee a preset performance design target of the structure dissipating seismic energy and reduce the post-earthquake repair cost. By means of the targeted design, damage positions of the structure under the action of earthquake loads are on the high-strength bolts, connecting plates and other energy consumption components easy to replace, post-earthquake repair is facilitated, and the connecting device meets development requirements of the assembly type steel structure capable of restoring the functions.

The invention discloses a post-earthquake self-reset mountable multi-section beam steel frame node. The post-earthquake self-reset mountable multi-section beam steel frame node is characterized in that I steel beams are connected to different forms of special-shaped columns through web angle iron and flange angle iron to form a weldless full-bolt connection mode; middle I-beams and end I-beams areconnected through web connecting plates and high-strength silicone rubber plates to form a weldless full-bolt connection mode with good ductility and high energy consumption performance; and a prestressed steel cable is applied to a weldless full-bolt joint between the each middle I-beam and the each end I-beam to form a pre-stress post-earthquake self-reset node.

The invention discloses a steel frame mechanized assembly-type supporting balcony, which improves the construction technology of the balcony. A lot of work is completed in the factory, and people onlyneed to mechanically assemble prefabricated components and a steel frame on site. The basic structure of the steel frame mechanized assembly-type supporting balcony includes the components such as cantilever beams, prestressing cables, profiled steel plates and supports. The steel frame mechanized assembly-type supporting balcony is a qualitative reform of the traditional construction technologyof steel frame structured balconies, the combination of the prestressing technology and the profile steel cantilever beams ensures the safety under the action of an earthquake, and self-reset can be realized after the earthquake, thereby greatly reducing the restoration cost after the earthquake, and reflecting the advantages of easy assembly and good ductility of the steel frame structure. Compared with the traditional cast-in-situ balconies, the balcony disclosed by the invention has many advantages such as double security guarantee, small environmental pollution and high comfort level. Thesteel frame structure with the balcony has the characteristics of low manufacturing cost, less environmental pollution and the like.

The invention relates to a flanged restorable-function steel-framed eccentrically braced system and belongs to the field of structural engineering. Main components of the system herein and main partsof connection devices can be produced in a factory, so that construction period is greatly shortened, and construction quality is improved. An upper flange cover plate is set in an inner cover plate form subjected to flange cover plate buckling amplitude control. A lower flange cover plate is set in an outer cover plate form, having good performance visibility, changeability and decidability. A self-resetting device ensures predetermined form design objective of the system herein to dissipate seismic energy and also ensures a reduction in post-earthquake repairing cost, and safety of the system herein is improved. The specific design helps ensure that damaged parts of the system herein under the action of seismic load easily occur to easily-changeable high-strength bolts, connection platesand other energy-dissipating components, post-earthquake repairing is facilitated, and the development requirement of restorable-function prefabricated steel structures is satisfied.

The invention relates to a self-resetting steel frame eccentric support system and belongs to the field of structural engineering. According to the self-resetting steel frame eccentric support system,the major components of the welded part of a joint connecting device can be manufactured in factory, so that the construction cycle is greatly shortened, and the construction quality can be improved;an upper flange cover plate is set into an inwards covering plate mode for bumped amplitude control; a lower flange cover plate is set into an outwards covering plate mode to achieve high performance, good visibility and replacement decidability; a self-setting device can ensure a preset performance design objective for structural seismic energy dissipation and reduce post-seismic restoration costs, thereby ensuring structural safety; through targeted design, damage of a structure under seismic load are prone to taking place in dissipative components easy to replace such as high-strength bolts and connecting plates to facilitate post-seismic restoration. Therefore, the self-resetting steel frame eccentric support system is applicable to meeting the demands of development of fabricated steel structures with a restorable function.