101results about How to "Improve the seismic performance of structures" patented technology

A light concrete wall slab cast in-situ is composed of main body and welded reinforcing steel bar net in said main body. Said main body is made up of water, cement, powdered coal ash, slag powder, silicon powder, efficient composite water-reducing agent, polypropylene fibres, glass fibre fabric or alkali-resistant plastic-coated glass staple, modified cement polymer emulsion (or powder), haydite, and sand. Its advantages are light weight, high strength, low shrinkage, not deforming and cracking, and low cost.

The invention relates to a novel composite arc bridge structure, and particularly discloses a lattice-type large-span soil-filling composite corrugated steel arch bridge structure. Sandwich mortar composite corrugated steel plates are adopted as large-span main arch rings of the composite structure. The corrugated steel plates are connected to form a reversely arranged double-layer plate through bolts, studs are arranged in an interlayer, and filled high-strength mortar forms an integral sandwich composite corrugated steel plate. Corrugated steel tubes are adopted by gastropore. Load is conveyed between the main arch rings and the gastropore by filling soil. The lattice-type large-span soil-filling composite corrugated steel arch bridge structure has the advantages of being low in weight, durable, high in strength, good in flexibility, high in performance, rapid in construction, good in economic benefit and the like, is an ideal alternative to reinforced concrete bridges, can be widely used in the construction of middle-sized bridges (20-50m), and can certainly generate good social economic benefit.

An aluminum alloy truss structure, comprising upper chord members, lower chord members, web members and all connection nodes by which the members are connected using riveting bolts, the chord members and web members being interconnected using tenons and mortise grooves that mate with each other respectively, each of the chord members being provided with a tenon plate at the end adjacent to the respective web members, each of the web members being correspondingly provided with a mortise groove at either end thereof, and the tenon plate on the chord members being implanted into the mortise groove on the web members; or, alternatively, each of the chord members being provided with a mortise groove at the end adjacent to the respective web members, each of the web members being correspondingly provided at either end thereof with a tenon that is to mate with the mortise groove.

The invention discloses a hanging flexible connection of a precast concrete infill wall. The hanging flexible connection of the precast concrete infill wall comprises precast concrete infill wall, frame columns/shear walls on both sides of the infill wall, a top beam/plate on the top of the infill wall and a bottom beam/plate at the bottom of the infill wall, wherein the precast concrete infill wall is connected with the frame columns/shear walls on both sides of the infill wall through snapping flexible pull rings, the precast concrete infill wall is connected with the top beam/plate of the infill wall through reserved joint bar grouting or cast-in-place of concrete, and a base slurry layer is arranged between the precast concrete infill wall and the bottom beam/plate of the infill wall. Vertical reinforcing steel bars are inserted into the middle and rear portions of the snapping flexible pull rings. The precast concrete infill wall can be made of light walls with anti-seismic energy dissipation structure. The hanging flexible connection of the precast concrete infill wall solves the technical and theoretical problems of heavy workload of cast-in-place or masonry construction, complex collaboration with a main structure, vulnerability and lack of anti-seismic energy dissipation capacity in earthquake and the like of an existing connection of the infill wall.

The invention discloses a ribbon-shaped single-tower cable-strayed-steel structure combined bridge and a construction process thereof. The combined bridge comprises a lower supporting structure, a main beam, an arch-shaped main tower which is arranged on the main beam and gradually backwards inclined from bottom to top, and two ribbon-shaped supporting structures which are positioned at the rear side of the main tower; the two ribbon-shaped supporting structures are both integrally fixedly connected with the main beam; the two-ribbon-shaped supporting structures and the main beam are lengthways arranged along the bridge direction; a plurality of cable-strayed ropes are arranged between the main tower and the main beam; each ribbon-shaped supporting structure is divided into a lower ribbon-shaped supporting structure and an upper ribbon-shaped connecting structure through the main beam. The construction process of the combined bridge comprises the steps of 1, constructing the lower supporting structure; 2, constructing the lower ribbon-shaped supporting structure; 3, constructing the main beam; 4, constructing the main tower and the upper ribbon-shaped connecting structure. The combined bridge is reasonable in structural design, convenient to construct, outstanding in mechanical performance and a good in use effect; a non-back cable-stayed bridge and a continuous rigid structural bridge are effectively combined, and the advantages of the two bridges are brought into full play.

The invention relates to a non-damper supporting system of module-type high temperature air-cooled reactor pressure vessel that is belonged to device technology field. The invention is used to solve the antimony between the unreliability of big damper and the high reliability of actor. The invention supplies a safe and reliable machine to take place of damper supporting system. It includes the first main bearing bracing, the second main bearing bracing, the first side direction bracing and the second side direction. Using the invention, the effective bearing and earthquake-resistant behavior would be ensured, and the fabrication cost is low.

The invention relates to an encapsulating structure and an encapsulating method of a high-Q-value optical micro-cavity coupling system based on LTCC (Low Temperature Co-Fired Ceramic). The encapsulating structure comprises an optical micro cavity, a coupler and a two-layer encapsulating body, wherein the first layer of the encapsulating body is formed by condensing an optical transparent encapsulating material accommodating the whole optical micro cavity and the coupler, so that the shock resistance of the system is enhanced; the second layer of the encapsulating body is partitioned into upper, middle and lower parts made of a ceramic material; the first layer of the encapsulating body is fully embedded into a middle layer through technical operation; the upper and lower layers are tightly bonded with the middle layer through a bonding agent at a high temperature, so that the defect that the first layer of the encapsulating material tends to be influenced by the environmental temperature is overcome, and the temperature stability is enhanced. The optical transparent encapsulating material of which the refractive index is lower than the refractive index of the optical micro-cavity coupling system is used for accommodating a coupling structure constructed by the whole optical micro cavity and the coupler, and a layer of ceramic material with a special structure is added outside, so that errors caused by the environmental temperature change are controlled. By adopting the encapsulating structure and the encapsulating method, the optical micro-cavity coupling system becomes more stable.

The invention discloses a fireproof composite wall for building protection. The simple wall comprises a bearing wall (1); multiple prestress dispersion layers (2) are transversely bonded on the two sides of the bearing wall (1) end to end; sandwich layer fillers (3) are cast in two space formed by the prestress dispersion layers (2) and the bearing wall (1); the sandwich layer fillers (3), the prestress dispersion layers (2) and the bearing wall (1) are integrally injected to form a simple wall main body. The simple wall is simple in structure and novel in design, improves the earthquake resistance of the overall wall structure, reduces the design strength and cost of wall components, meanwhile, greatly improves the shear resistance and the integrity, and has such advantages as excellent integrity, excellent earthquake resistance, higher bonding and anti-shearing capacity and excellent finished wall molding effect.

The present invention discloses a ductile prestressed concrete structural member and its production method. Said member includes concrete and prestressed reinforcement, the described concrete compression strength is greater than 60MPa, and the described prestressed reinforcement is prestressed stranded wire, its strength is greater than or equal to 1860 MPa, its relaxation rate is less than or equal to 2.5% and percentage elongation is greater than or equal to 5%. The bending deflection ductility ratio of the prestressed concrete structure meeting the above-mentioned technological parameters is greater than 3.0, and said prestressed concrete structure is superior to general concrete structure in ductility.

The invention discloses a precast assembled integrated type concrete shear wall panel with a bottom hole containing multiple coupling beams. The precast assembled integrated type concrete shear wall panel comprises lateral connection rebars of the precast concrete shear wall panel, top connection rebars and bottom installation sleeves corresponding to the top connection rebars. The middle of the wall panel is provided with window holes. The lower end of the wall panel is provided with structure holes corresponding to the window holes, wall limbs, a general coupling beam, energy consumption coupling beams A and energy consumption coupling beams B. The width of the window holes is the same as that of the structure holes. The structure holes are filled with light non-structural materials. The portions, on the wall limbs, of the top coupling rebars are stretched out upwards to connect upper layers of shear wall rebars and lower layers of shear wall rebars. By means of the precast assembled integrated type concrete shear wall panel, the number of connected rebars is reduced, self weight is reduced, construction transportation and hoisting are facilitated, the concrete shear wall panel is good in anti-seismic performance, multiple seismic fortification lines are formed for a building, the energy-dissipation capacity of a wall body is enhanced, and the purpose of reducing repair cost is achieved.

The invention relates to the technical field of building, in particular to a multi-yield-point metal shear damper facing multiple disasters and multiple performance targets. The multi-yield-point metal shear damper comprises a first energy dissipation piece and a second energy dissipation piece, the first energy dissipation piece sleeves the outer side of the second energy dissipation piece, and afixing piece and a stopping assembly are arranged between the first energy dissipation piece and the second energy dissipation piece; the first energy dissipation piece and the second energy dissipation piece are fixedly connected through the fixing piece, and the stopping assembly comprises a first stopping block and a second stopping block matched with the first stopping block; and the first stopping block is connected with one of the first energy dissipation piece and the second energy dissipation piece, and the second stopping block is connected with the other one of the first energy dissipation piece and the second energy dissipation piece, and used for making contact with the first stopping block and pushing the first stopping block to move in the shear force direction. When a structure suffers the disasters of different types and different levels, multi-stage energy dissipation and vibration reduction capability can be provided according to the deformation state of the structure, demands of the multiple performance targets of the building structure under the multiple disasters are met, seismic performance of the structure is improved, and the multi-yield-point metal shear damper adapts to the stiffness, carrying capacity and energy dissipation capacity required by the structure.

The invention discloses a super-high performance concrete frame structure fabricated building and a construction method thereof. A splicing unit at least comprises beam, column and floor integrated pieces prefabricated by super-high performance concrete. The height of each column is the height of a building storey; the beams are perpendicular to the side walls of the columns; the floors are located on the upper surfaces of the beams; connecting parts are arranged on the side edges of the floors; and the two ends of the columns stretch out of the end faces of the floors and the beams. When fabricating is constructed, after the prefabricated integrated pieces adjacent to the building plane, the super-high performance concrete is poured into joints between the connecting parts of the side edges of the floors to enable the prefabricated integrated pieces to form a whole. The upper storey and the lower storey of the building are connected through the columns of the beam, column and floor integrated pieces. The prefabricated integrated pieces adopt the super-high performance concrete as structure materials, and the reasonable connecting arrangement is configured, so that the average thickness of the floor and the amount of connectors and the joints between prefabricated members both are decreased substantially. The self-weight of the building is reduced substantially under the premise of guaranteeing the rigidity and strength of the building, and construction difficulty is reduced.

The invention discloses a novel all-dimensional twisting energy dissipation damping supporting seat. The novel all-dimensional twisting energy dissipation damping supporting seat includes a base and atop seat, the base is provided with at least three energy dissipation supporting columns, the energy dissipation supporting columns are provided with limiting parts which are connected with the base,and the energy dissipation supporting columns are connected with connecting parts which are rotatably provided with sliding blocks in a connecting mode; each of the sliding blocks is suitably matchedwith a corresponding sliding groove, the sliding grooves are connected at the lower surface of the top base, and the sliding blocks can slide in correspondence with corresponding sliding grooves; andthe sliding grooves are located at the same plane, at least two sliding grooves are not mutually parallel, and the energy dissipation supporting columns are mild steel members. According to the novelall-dimensional twisting energy dissipation damping supporting seat, the principle of a traditional supporting seat energy dissipation due to friction can be broken, deformation capability of materials can be fully played, earthquake kinetic energy amount can be effectively consumed, the blindness and the directionality in present designing and installing process can be avoided, the energy dissipation effect of the supporting seat is improved, and the entire anti-quake performance and safety of a structure can be improved.

The invention belongs to the technical field of earthquake resistance of building structures, and particularly relates to an energy dissipation type coupled anti-seismic wall with reinforcing bars, grouting holes, building blocks and a combined coupling beam and a manufacturing method. The energy dissipation type coupled anti-seismic wall is adopted by a bearing wall of a multi-storey building in a town. The energy dissipation type coupled anti-seismic wall comprises a building block wall body, a coupling beam, soft steel dampers, single-reinforcement core columns, construction core columns and horizontal pull connecting ribs. According to the invention, due to the combined action of the core columns and the horizontal pull connecting ribs, the building block wall body is effectively constrained, and the integrity and the anti-seismic performance of a coupling wall column are improved. The coupling beam and a constraint building block wall beam on the top of the coupling beam are combined to form the shear type combined coupling beam, and the soft steel dampers are arranged on the portions of connection between the coupling beam and the coupling wall column, so that multiple energy dissipation and seismic resistance defense lines of the coupled anti-seismic wall are formed, and the ductility and the energy dissipation capacity of the wall body are enhanced.

The invention discloses a buckling restrained brace structure arrangement system for a building, which comprises a frame column, a frame beam, four buckling restrained braces and a connecting node element, a rectangle is enclosed between the frame column and the frame beam, and the connecting node element is arranged between the frame column and the frame beam. The two ends of each buckling restrained brace are fixed to the middle of the frame column and the middle of the frame beam through connecting joint elements respectively, and a rhombic building window opening is defined by the four buckling restrained braces. The buckling restrained brace arranged in the rhombus mode is adopted, the good anti-seismic performance is achieved, construction is convenient and fast, the steel using amount of embedded parts is reduced, good feasibility and practicability are achieved, and the buckling restrained brace can be used for concrete structures, steel structures and combined structures. The structure is simple, force transmission is clear, and construction is fast.

A prestressed assembly type steel frame friction damping structure system and a design method thereof comprise at least two layers of steel frame structures, wherein adjacent steel frame structures are disconnected at the joint of an upper-layer column and a lower-layer floor slab; the adjacent steel frame structures are connected in a sliding manner through a bidirectional sliding friction connecting device; the bidirectional sliding friction connecting device comprises an upper C-shaped plate, a lower C-shaped plate, a friction plate and a connecting piece; the plate surface of the upper C-shaped plate is provided with a first transverse strip hole; the plate surface of the lower C-shaped plate is provided with a first longitudinal strip hole; the upper C-shaped plate and the lower C-shaped plate are mutually inserted and connected with the connecting pieces in the corresponding first longitudinal strip holes through the first transverse strip holes; the upper C-shaped plate is connected with a bottom connecting plate; the lower C-shaped plate is connected with a top connecting plate; and friction plates are arranged between a first top plate and a second top plate, between a second top plate and a first bottom plate and between the first bottom plate and a second bottom plate. The prestressed assembly type steel frame friction damping structure system solves the technical problems of poor energy consumption performance and difficult construction of connecting joints of the traditional assembly type structural steel column connecting structure.

The invention belongs to the technical field of wall joint connecting and manufacturing in building structure engineering, and particularly relates to a prefabricated built-in insulating layer foamedconcrete composite wall-light steel frame connection joint. A composite wall is installed in a half-embedded mode, a built-in insulating layer and inner sheet foamed concrete are embedded into a lightsteel frame, and external sheet foamed concrete externally covers a light steel frame beam-column. Compared with a traditional prefabricated wall, a wall body of the prefabricated built-in insulatinglayer foamed concrete composite wall-light steel frame connection joint can be used as a structural stress member, mutually transfers the load with the frame beam-column, participates in the structure stress of a building, and improves bearing capacity and anti-seismic capacity of the building, and a wallboard externally covers the steel frame beam-column to effectively reduce the corrosion of steel. The composite wall-frame joint realizes the bolt connection by pre-embedding bolts in the composite wall and welding connection angle iron on the frame structure beam-column; and the prefabricated built-in insulating layer foamed concrete composite wall-light steel frame connection joint is simple in structure form, reliable in connection and easy to construct, can effectively shorten the construction period when applied to practical engineering, and is suitable for wide popularization and application in low multi-layer light steel frame structures.

The invention provides a double-layer PC plate type conversion layer of a post-poured upper-portion structure and a construction method. The double-layer PC plate type conversion layer comprises a first-layer RC conversion plate and a second-layer RC conversion plate, and the first-layer RC conversion plate and the second-layer RC conversion plate are supported through frame columns to form a hollow layer. The thickness of the first-layer RC conversion plate is smaller than that of the second-layer RC conversion plate, and hidden beams are arranged in the second-layer RC conversion plate. A post-poured shearing wall, an energy consumption shearing wall and a friction damp mechanism are mounted in the hollow layer. A certain quantity of steel bars are configured in the upper and lower plates of the conversion layer, an energy consumption device is arranged between layers, thus the mass of the conversion layer plates is decreased, and the conversion layer plates have the enough bearing capacity to meet the upper-portion post-poured building structure. Through arrangement of interlayer special components, the structural integrity is reinforced, the structural seismic performance is reinforced, and thus the upper-down adjacent layers of the conversion layer do not become the anti-seismic weak layers.

The invention discloses a variable stiffness shock absorption device with an embedded connecting beam and a working method thereof. The device comprises a U-shaped joint, a T-shaped joint, hyperbolicspring steel sheets located at the upper end and lower end of the joints, and internal and external connecting elements for connecting the two joints, wherein the U-shaped joint and the T-shaped jointare respectively connected to cut-off connecting beams on two sides; a slotted hole of the U-shaped joint and a bulge of the T-shaped joint are matched with each other; and the misalignment displacement of the U-shaped joint and the T-shaped joint is restricted by the hyperbolic spring steel sheets at the upper ends and lower ends of the joints and the internal and external connecting elements. The device can passively adjust the stiffness and damping characteristics of the connecting beam greatly and accurately, optimally controls the dynamic response of high-rise structures for different environmental excitations such as earthquakes and wind vibrations, does not need plastic deformation and external energy, and has relatively high application prospect.

Disclosed is a beam end controllable energy dissipation plastic hinge. The beam end controllable energy dissipation plastic hinge comprises a mechanical hinge; disc spring self-resetting devices are arranged on the inner sides of the upper end and the lower end of the mechanical hinge; and friction energy dissipation devices are arranged on the front end face and the rear end face of the mechanical hinge. The structure can be induced to form a reasonable damage mechanism under the earthquake action, the anti-seismic performance of a fabricated concrete frame structure is improved, passive control over the structure under the earthquake action is achieved, the purpose that the structure function can be recovered is achieved, and rapid development of the fabricated concrete frame structure is promoted.

The invention provides a prestress column tenon connection steel structure system and a design method thereof. The prestress column tenon connection steel structure system comprises at least two layers of steel-frame structures stacked in the vertical direction; steel columns of each layer of the steel-frame structure are broken at the connecting parts between the steel columns and the lower layers of floor slabs; adjacent steel-frame structures are connected through prestress column tenon connection structures; the prestress column tenon connection structures comprise through holes, top sleeving tenons, elastic materials and high-strength pulling cables; the through holes are formed in the tops of the steel columns of the lower layers of the steel-frame structures; the top sleeving tenonsare connected with the bottoms of the steel columns of the upper layers of the steel-frame structures; the top sleeving tenons at the bottoms of the steel columns are correspondingly inserted into the through holes in the tops of the steel columns; gaps are reserved between the side walls of the top sleeving tenons and the side walls of the through holes; gaps are reserved between the tops of thethrough holes and the bottoms of the steel columns of the upper layers of the steel-frame structures; the elastic materials are arranged in the gaps between the top sleeving tenons and the through holes; and the high-strength pulling cables penetrate through the steel columns vertically corresponding in the steel structure system. The technical problem that a traditional steel structure is low inconstruction efficiency, severe in environmental pollution and poor in connecting joint anti-seismic property is solved.

The invention relates to a preparation method of an insulating brick containing plant straws. The preparation method is characterized in that the insulating brick is produced from the raw materials in parts by weight: 70-80 parts of the plant straws, 13-25 parts of magnesium hydroxide and 5-10 parts of isocyanate and comprises the steps: crushing the plant straws to obtain crushed plant straws with the fiber length of 5-10mm, drying the crushed plant straws until the moisture content is 8 percent according to the weight percentage, weighing the plant straws according to the parts by weight, adding the magnesium hydroxide and the isocyanate as a binder according to the parts by weight, carrying out mixing and burdening, then carrying out prepressing with the precompression of 500 tons, then carrying out compression molding with the die pressure of 1.2 kilotons, heating to 110 DEG C by virtue of a high-frequency electromagnetic induction method, and carrying out hot pressing for 3-6 minutes to form the insulating brick. According to the production method disclosed by the invention, with the plant straws as main raw materials, the produced insulating brick has a good fireproof performance without needing secondary insulation; in addition, the insulating brick is rapid in construction, has a favorable anti-seismic effect and has the shock strength according with the stipulations of a national standard in wall materials.

The invention discloses a spliced shear wall with steel-plate concrete and reinforced concrete arranged inside and a construction technology. There are two types; the first type includes a prefabricated reinforced concrete shear wall and a prefabricated steel-plate concrete shear wall, the prefabricated reinforced concrete shear wall comprises a reinforcement cage I, a connecting steel plate I, aplurality of embedded pieces and a post-pouring concrete zone, and the prefabricated steel-plate concrete shear wall comprises a reinforcement cage II, a built-in steel plate I, a connecting steel plate II, a plurality of connecting pieces, embedded bolts and connecting bolts; the second type includes a prefabricated reserved-groove reinforced concrete shear wall and a prefabricated bulging built-in steel-plate concrete shear wall, the prefabricated reserved-groove reinforced concrete shear wall comprises a reinforcement cage III, a reserved groove and a plurality of reserved holes, and the prefabricated bulging built-in steel-plate concrete shear wall comprises a built-in steel plate II, a reinforcement cage IV, a round hole, a grouting device, an injection nozzle and transverse split bolts. The spliced shear wall has the advantages of very high construction speed, low labor intensity of workers and low environmental pollution.