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102 results about "Cold-formed steel" patented technology
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Cold-formed steel (CFS) is the normal term for steel items formed by cool working procedures done close to room temperature, for example, moving, squeezing, stepping, twisting, and so on. Stock bars and sheets of cold-moved steel (CRS) are generally utilized in every aspect of assembling. The terms are against hot-framed steel and hot-moved steel.
Fixing clamp for cold-bending Z-shaped steel sheet pile static pressure pile planting machine
The invention belongs to the technical field of water transportation engineering static pressure pile planting machines, and particularly relates to a fixing clamp for a cold-bending Z-shaped steel sheet pile static pressure pile planting machine. The Z-shaped steel plate is arranged at the bottom of the pile planting machine body; the clamping assembly comprises a movable clamp, a fixed clamp, a pushing assembly and a deflection assembly, the movable clamp and the fixed clamp are distributed front and back and located at the bottom of the pile planting machine body, and the pushing assembly is connected with the movable clamp and used for driving the movable clamp to move; the deflection assemblies are arranged on the opposite sides of the movable clamp and the fixed clamp respectively. According to the U-shaped static pressure pile planting machine steel sheet pile fixing clamp, the U-shaped static pressure pile planting machine steel sheet pile fixing clamp is improved, the fixing clamp is changed into a structure with a notch, the fixing clamp can clamp the locking opening position of a cold-bending Z-shaped steel sheet, and therefore under the condition that clamping force is not lost, the stability of the fixing clamp when the fixing clamp clamps the Z-shaped steel sheet is guaranteed.
Owner:CCCC GUANGZHOU DREDGING CO LTD +1
Cold-formed section steel forming and welding method
InactiveCN119328272AReduce porosityStrong load bearing capacityWelding accessoriesPoint cloudImaging data
The invention relates to the technical field of section steel welding, in particular to a cold-formed section steel forming and welding method which comprises the following steps: S1, cleaning a welding position and nearby parts of cold-formed section steel, preheating the welding position by adopting a low-voltage high-current resistance heating mode after cleaning, and after the preheating treatment is finished, welding the cold-formed section steel by adopting a low-voltage high-current resistance heating mode; a soldering flux is smeared on the welding position, and a welding gun is used for conducting welding operation on the welding position; and S2, continuously collecting weld joint images through an industrial camera, fitting image data to obtain a surface contour image of a weld joint area, performing three-dimensional reconstruction on the surface contour image to obtain three-dimensional point cloud data of the weld joint area, evaluating the quality of the weld joint according to the three-dimensional point cloud data, and performing repair welding treatment on unqualified weld joints according to an evaluation result to obtain a repair welding result. According to the method, the problems that the welding effect is poor and the welding quality cannot be evaluated when the cold-formed section steel is welded in the prior art can be effectively solved.
Owner:GUANGDONG ZHENXIONG STEEL PIPE CO LTD
Arc-shaped machining and forming process for cold-formed section steel of railway vehicle body
The invention relates to an arc-shaped processing and forming process for cold-formed section steel of a railway vehicle body, which solves the problem that the rebound amount and burrs of a shearing surface do not meet the requirements and comprises the following steps: confirming the size of a section steel material; the slitting specification is specified according to a drawing; selecting a die, installing a cutter, placing a laser scanner, setting profile steel parameters, and enabling profile steel to pass through a front die, a front pre-tightening mechanism, a front fixing mechanism, the cutter, a rear fixing mechanism, a rear pre-tightening mechanism and a rear die when the profile steel enters a shearing mechanism; when the profile steel enters the shearing mechanism, the front pre-tightening mechanism and the rear pre-tightening mechanism are inflated to wrap the profile steel tightly, the front fixing mechanism and the rear fixing mechanism fix the profile steel, the profile steel is preheated for a short time, the cutter conducts hydraulic shearing on the profile steel, and the shearing face of the profile steel is ground and cooled. The profile steel is fixed and locked through the front fixing mechanism and the rear fixing mechanism, the range of the shearing face is preheated during shearing, the shearing face is ground while shearing is conducted, meanwhile, the profile steel is cooled, and the standard requirement is met.
Owner:CHANGCHUN XINJINXIANG COLD FORMED STEEL
Method and device for evaluating forming quality of cold-formed section steel roller
ActiveCN120524345AData processing applicationsRoll mill control devicesLinear relationshipGaussian mixture distribution
The invention provides a method and a device for evaluating the forming quality of a cold-formed steel roller, relates to the technical field of data processing, and aims at analyzing typical frequency band characteristics of monitoring data in the forming process of the roller on multiple scales and determining corresponding joint characteristics so as to carry out quality evaluation. The transient impact characteristic of the roller vibration signal can be accurately captured in the time domain, the main frequency component and the modulation sideband thereof are clearly separated in the frequency domain, and the method adapts to the complex working condition of the forming process. And on the premise that the nonlinear elastic characteristic of the roller is physically constrained, the unsteady-state characteristic corresponding to the roller quality degradation process is determined on the basis of Gaussian mixture distribution of combined characteristics, the internal mechanism of a complex system can be analyzed and explained in combination with the physical deformation of the roller, and the quality of the roller is improved. Different distributions and corresponding non-linear relationships of multi-sensor time sequence data are captured, and timely and accurate quality evaluation can be provided even if the data change slightly or the roller has potential faults.
Owner:SHANDONG HONGMIN ROLLER MOLD
Offshore photovoltaic panel-purline integrated connection node structure suitable for offshore photovoltaic
The invention discloses an offshore photovoltaic panel-purline integrated connection node structure suitable for offshore photovoltaic. The photovoltaic panel is embedded in the aluminum alloy frame, the aluminum alloy frame is connected with the upper flange of the purline through a bolt, the aluminum alloy pressing block acts on the upper portion of the aluminum alloy frame of the photovoltaic panel and holds the C-shaped purline through the U-shaped screw and the bottom plate, and meanwhile the bottom plate is connected with the lower flange of the C-shaped purline through a bolt. The purlines parallel to each other are connected through flat steel braces and U-shaped bolt bottom plates, and the cold-formed section steel is connected with the upper and lower turned edges of the opening sides of the C-shaped purlines through self-tapping screws. The C-shaped purline is surrounded by the U-shaped bolts, the photovoltaic panel is reinforced and fixed, the connection reliability of the offshore photovoltaic panel under the action of dynamic loads such as stormy waves is ensured, the bottom plates of the U-shaped bolts are connected with the flat steel braces, and the overall stability of the purline under the action of wind suction force is greatly improved; and due to the design of the cold-formed section steel, the section of the C-shaped purline is prevented from deforming when the U-shaped bolt is screwed down, and great application value is achieved.
Owner:ZHEJIANG UNIV OF WATER RESOURCES & ELECTRIC POWER +1
Random field-based rusted cold-formed section steel time-varying random constitutive model establishment method
The invention relates to a rusted cold-formed section steel time-varying random constitutive model establishing method based on a random field. Based on the corrosion degree parameters and the two-dimensional power spectral density equation, the method can not only represent the uniform corrosion degree, but also evaluate the non-uniform corrosion degree, and can generate a large number of cold-formed steel corrosion surface topographies meeting certain statistical distribution through computer simulation. According to the method, mechanical property numerical calculation is conducted on a cold-formed section steel finite element model based on generated rusted surface morphology data, rusted surface data generated on a large scale are imported into the cold-formed section steel finite element model through a program, and discreteness and uncertainty caused by rusting can be considered; a finite element numerical calculation result is highly consistent with a test result, and a rusted cold-formed section steel time-varying random constitutive model based on the random field is further proposed, so that the problem that the rusted cold-formed section steel constitutive is still based on a deterministic test at present is solved, and time-varying random constitutive prediction of the cold-formed section steel is realized.
Owner:EAST CHINA JIAOTONG UNIVERSITY
Cold-formed section steel for high-altitude cantilever construction platform
The utility model relates to the technical field of high-altitude cantilever section steel platform design, and discloses a cold-formed section steel for a high-altitude cantilever construction platform, which comprises a wall body and two slide rails, the top of the wall body is fixedly connected with a plurality of U-shaped steel, the top of the wall body is fixedly connected with a fixed block, the right side of the fixed block is fixedly connected with an electric push rod, and the right side of the electric push rod is fixedly connected with the slide rails. An electric push rod is fixedly connected to the left side of the wall body, a connecting rod is fixedly connected to the driving end of the electric push rod, two sleeve rods are fixedly connected to the right side of the wall body, supporting rods are slidably connected to the interiors of the sleeve rods, fixing columns are fixedly connected to the interiors of the supporting rods, and two empty grooves are formed in the interiors of the two sleeve rods. According to the utility model, the rotatable baffle plate is supported on the ground, so that goods can be conveniently carried by a transportation tool, the baffle plate can be fixed on the material lifting box to prevent the goods from falling off, and the sliding material lifting box can prevent safety accidents caused by workers going up and down the outdoor material lifting box for multiple times, so that potential safety hazards are reduced.
Owner:JIANGSU HUALING COLD FORMING TECH CO LTD
Hot-dip aluminized silicon 980MPa grade Q&P steel cold-formed steel sheet and its preparation method
The application provides a hot-dip aluminum-silicon 980MPa Q&P steel cold forming steel plate and a preparation method thereof, and the component of the hot-dip aluminum-silicon base plate is as follows in percentage by mass: C: 0.18% to 0.24%, Si: 1.4% to 2.8%, Mn: 1.9% to 2.5%, P: less than or equal to 0.02%, S: less than or equal to 0.005%, Ti: 0.01 to 0.04%, Nb: less than or equal to 0.04%, Al: less than or equal to 0.005%, and the balance of Fe and inevitable impurities. The preparation method comprises a series of processes such as smelting, hot rolling, pickling, cold rolling, continuous annealing hot-dip aluminum-silicon, and finishing, and the hot-dip aluminum-silicon is ingeniously carried out in the slow cooling stage, perfectly matches the heat treatment system, breaks the limitation that the hot-dip galvanized steel plate must be over-aged at high temperature for a short time, and can make the bainite transformation sufficient; the hot-dip aluminum-silicon 980MPa Q&P steel produced by the application has excellent strength and plasticity.
Owner:ANGANG STEEL CO LTD
Spacing quick-adjusting device for z-shaped steel cutting tool
This invention discloses a quick-adjustment device for the spacing of Z-shaped steel cutting tools, belonging to the technical field of cold-formed steel processing equipment. It includes multiple cutting mechanisms slidably connected to a fixed frame. The device also includes an adjustment mechanism for synchronously and equidistantly adjusting the spacing of the multiple cutting mechanisms. The adjustment mechanism includes a fixed frame, a hinged frame, multiple connecting components, and a drive component. By setting up the fixed frame, hinged frame, multiple connecting components, and drive component, the adjustment mechanism of this invention can synchronously and equidistantly adjust multiple sets of cutting mechanisms horizontally, significantly reducing the consistency error of the spacing between adjacent tools, improving the dimensional accuracy of multi-segment cutting of Z-shaped steel, and offering faster adjustment efficiency compared to the traditional method of manually adjusting each tool individually.
Multi-station surface deburring equipment for cold-formed section steel
ActiveCN222537165UImprove processing efficiencyreduce cleanupEdge grinding machinesGrinding/polishing safety devicesPolishingElectric machinery
The utility model discloses cold-formed section steel multi-station surface deburring equipment which comprises a workbench, a support, a cross beam, a fan, a supporting block, a motor, a commutator, a rotating disc, a supporting column, a fixing block, a first fixing plate, an air cylinder, a light motor, a second fixing plate and a polishing piece. In the production and machining process of the cold-formed section steel, the surface of the cold-formed section steel can be effectively ground and deburred, the deburring treatment efficiency is higher due to the arrangement of multiple stations, machining is more flexible, manpower is effectively saved, chippings on the surface of the workbench can be blown off in time due to the arrangement of a fan, and the working efficiency is improved. And subsequent manual cleaning of the workbench is omitted, time and labor are saved, and machining is flexible.
Owner:SIYANG HENGLIAN HARDWARE MASCH CO LTD
Cold-formed section steel straightening equipment
The utility model discloses cold-formed section steel straightening equipment, which relates to the technical field of bent section steel straightening, and comprises a bearing seat and two slide rails, the two slide rails are respectively arranged on the upper wall surface of the bearing seat, two transmission cases are arranged on the upper wall surface of the bearing seat, a lead screw is connected between the two transmission cases, and the lead screw is arranged on the bearing seat. Auxiliary structures are installed on the inner wall faces of the two transmission boxes, fixing structures are installed on the inner wall faces of the auxiliary structures, and the outer wall face of the lead screw is sleeved with a straightening structure. The device has the advantages that the four limiting plates respectively drive the fixed telescopic sleeves to move along the fixed telescopic rods, the clamping springs contract, the bent steel plate is jacked through the four limiting plates, transverse and longitudinal displacement of the bent steel plate is limited at the moment, then an operator tightens the two threaded nails to fix the bent steel plate, and the bent steel plate is fixed. The problems that according to existing cold-formed steel straightening equipment, fixing frames need to be prepared according to bent steel plates of different sizes, dismounting and mounting are very troublesome, and the clamping efficiency is reduced are solved.
Owner:SHIBO (JIANGSU) INTELLIGENT MFG CO LTD
A steel for cold forming and the method of manufacturing of a cold formed steel part thereof
A steel for cold forming comprising of the following elements, expressed in percentage by weight:0.03% ≦ C ≦ 0.18%;1.2 % ≦ Mn ≦ 2.5%;0.05% ≦ Si ≦ 1.5 %;0.01% ≦ Cr ≦ 2%;0.001% ≦ Al ≦ 0.1%;0.01% ≦ Nb ≦ 0.12%;0.001% ≦ Ti ≦ 0.1%;0.003% ≦ Mo ≦ 1%;S ≦ 0.015%;P ≦ 0.015%;N ≦ 0.01%; 0% ≦ Ni ≦ 1%;0 ≦ B ≦ 0.01%; 0% ≦ V ≦ 0.5%;0% ≦ Mg ≦ 0.010%;0% ≦ Zr ≦ 0.010%;0% ≦ Ce ≦ 0.1%;0% ≦ Ca ≦ 0.005%;0% ≦ Cu ≦ 1%;the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of said steel having microstructure comprising in area fraction, 40% to 90% of Granular Bainite, 10% to 40% of Martensite- Austenite islands and the amount of niobium present as carbides, nitrides and / or carbo-nitrides is equal to or more than 50% of the nominal niobium content present in the steel.
Owner:ARCELORMITTAL SA
Curved surface roll bending device for cold-formed section steel
The utility model discloses a cold-formed section steel curved surface roll bending device which comprises a working table, a pressing roller assembly is arranged on the working table, the pressing roller assembly comprises a pressing roller supporting plate, a pressing roller wheel and a sliding pressing roller base, sliding rails are arranged on the two sides of the sliding pressing roller base, and a first supporting roller assembly and a second supporting roller assembly are arranged on the two sides of the pressing roller assembly. The cold-formed section steel bending device has the advantages that the cylindrical idler wheel is adopted to be matched with cold-formed section steel to conduct bending work, force is exerted on a bending point in a rotating mode to be matched with bending, in the bending process, the rotary contact of the cylindrical outer surface enables the bending position not to have scratches and pits, the auxiliary polishing effect is achieved, the bending position is smooth and attractive, and the bending quality is improved. And meanwhile, progressive pushing is adopted for bending work, so that the stress at the bent position is uniform.
Owner:SIYANG HENGLIAN HARDWARE MASCH CO LTD
Full-automatic cold roll forming production equipment and production method
The invention relates to the technical field of cold roll section steel production, and discloses full-automatic cold roll forming production equipment and method.The production equipment comprises forming roller assemblies, a plurality of forming roller assemblies are used for machining a round pipe into a square pipe, and a hollow round wheel is fixedly installed on one forming roller assembly. Therefore, no matter the roller meets a bulge or a recess on the square tube, the roller actively pushes the movable plate to be far away from the square tube when the roller is far away from the square tube through the special-shaped rack plate, or the special-shaped rack plate drives the strip-shaped rack plate to be far away from the square tube through the gear when the special-shaped rack plate moves towards the square tube, so that the movable plate is pushed to be far away from the square tube through the strip-shaped rack plate; the movable plate is limited to only move towards one direction, so that a unified threshold value is set through the monitoring assembly to judge whether the displacement of the movable plate is qualified or not, when the displacement exceeds the threshold value, it can be considered that the square pipe protrudes or sinks at the position, and therefore the judgment logic is simplified.
Owner:HUNAN YIGE NEW MATERIAL TECHNOLOGY CO LTD
Cold-formed-steel concrete composite slab with cast-in fingers
The present invention revolutionizes the construction of composite slabs by introducing a novel design that integrates cold-formed steel and wire-mesh-reinforced concrete (CFS-WMRC). This innovative design significantly reduces the slab's weight and thickness while enhancing structural integrity and resistance to environmental stresses. The invention's core features modified steel joists with unique connector ‘fingers’ in place of traditional top flanges, optimized for direct concrete casting and load distribution. The joists, equipped with utility holes, facilitate the incorporation of HVAC systems, contributing to structural support and space efficiency. Prefabrication techniques are employed to assemble the joists and mesh off-site, where they are subsequently cast with concrete, ensuring consistent quality and accelerating construction timelines. The incorporation of these advanced methodologies results in improved structural performance, reduced construction costs, and an environmentally resilient building component suitable for diverse architectural applications, including the extension into balcony slabs.
Owner:TAO JIANLIN
Device for detecting quality of cold-formed section steel
Owner:JIANGSU HUALING COLD FORMING TECH CO LTD
Method and device for evaluating the quality of cold-formed steel roll forming
ActiveCN120524345BData processing applicationsRoll mill control devicesComplex systemNonlinear elasticity
The present invention provides a method and device for evaluating the forming quality of cold-bent steel rollers, which relates to the field of data processing technology. The typical frequency band characteristics of the monitoring data of the roller forming process are analyzed at multiple scales, and the corresponding joint characteristics are determined to perform quality evaluation. The transient impact characteristics of the roller vibration signal can be accurately captured in the time domain, and the main frequency component and its modulation sideband can be clearly separated in the frequency domain to adapt to the complex working conditions of the forming process. Under the premise of physical constraints on the nonlinear elastic characteristics of the roller, the non-steady-state characteristics corresponding to the roller quality degradation process are determined based on the mixed Gaussian distribution of the joint characteristics. It can combine the physical deformation of the roller to analyze and explain the internal mechanism of the complex system, capture the different distributions and corresponding nonlinear relationships of the multi-sensor time series data, and provide timely and accurate quality evaluation even if there are slight changes in the data or there are potential faults in the roller.
Owner:SHANDONG HONGMIN ROLLER MOLD
Light laser cutting equipment for cold-formed section steel
The utility model discloses light laser cutting equipment for cold-formed section steel, which comprises a bottom plate, a supporting plate, a material plate, a bracket, a vertical sliding rail, a motor, a rotating wheel, a sliding piece, a transverse plate, a transverse sliding rail, a moving piece, a laser cutting machine and a cutting head. According to the laser cutting device for the cold-formed section steel, the cold-formed section steel can be effectively cut, the laser cutting treatment efficiency is high, the cumbersome shape of a traditional laser cutting machine is abandoned, parts of the laser cutting device are simple, the operation threshold is low, the manufacturing cost of the laser cutting device is low, the production cost is reduced, and the use flexibility is improved.
Owner:SIYANG HENGLIAN HARDWARE MASCH CO LTD
Cold-formed steel module building
ActiveCN121183860AProtective buildings/sheltersShock proofingArchitectural engineeringCold-formed steel
The invention provides a cold-formed section steel module building which comprises a bottom unit arranged in a use place according to needs and connected with a foundation through a plurality of first fixing pieces; the plurality of corner columns are respectively connected with the bottom unit, and the plurality of corner columns are respectively connected with the foundation through second fixing pieces; the plurality of middle columns are arranged on the bottom unit and between the adjacent corner columns, and the plurality of middle columns are connected with the plurality of first fixing pieces respectively; the cross beams are arranged between the adjacent corner columns and the adjacent middle columns and are connected with the corner columns and the middle columns through a plurality of third fixing pieces; the top units are respectively arranged on the plurality of corner columns and the plurality of middle columns and are respectively connected with the plurality of corner columns and the plurality of middle columns through a plurality of fourth fixing pieces; according to the cold-formed steel module building, a multi-dimensional fixing system and a collaborative bearing overall frame are formed, the structural connection reliability, the lateral displacement resisting rigidity and the living safety are remarkably improved, and the construction flexibility and the multi-module-group suitability are enhanced.
Owner:CHENGDONG INTEGRATED HOUSING HEBEI CO LTD +1
A prefabricated connection node structure for the eaves and columns of a steel-structure residential building
This utility model discloses a prefabricated connection node structure for the eaves and columns of a steel structure residential building, including cold-formed C-shaped steel columns, cold-formed rolled-edge angle steel columns, and a roof steel frame. The tops of the cold-formed C-shaped steel columns and the cold-formed rolled-edge angle steel columns are respectively provided with corresponding middle and end roof steel frames for insertion. At the lower eaves of the middle and end roof steel frames, respectively, are provided lower crossbars of the steel frame and first and second inserted steel pipe sections. Sealing plates and sealing bending plates are respectively provided at the tops of the cold-formed C-shaped steel columns and the cold-formed rolled-edge angle steel columns. After each inserted steel pipe section is inserted into each steel column, they are connected and fixed using fastener bolts. This prefabricated connection node structure for the eaves and columns of a steel structure residential building can effectively improve installation efficiency and reduce on-site construction costs, and has the advantages of simple structure, convenient manufacturing, quick construction, and reliable assembly.
Owner:XINGKONG LVZHU (ZHEJIANG) TECH CO LTD
Marking equipment for cold-formed section steel
Marking equipment for cold-formed section steel comprises a machine frame, a steel belt, a hydraulic machine, a connecting part and a braking mechanism, the machine frame comprises two L-shaped frame bodies which are symmetrically arranged, an upper roll shaft and a lower roll shaft which are parallel to each other are arranged between the two frame bodies, and the hydraulic machine is arranged at the tops of the frame bodies; a pressing roller is arranged in the middle of the upper roller shaft, a character die roller is arranged at the position, corresponding to the pressing roller, of the lower roller shaft, and a steel belt passes through the position between the pressing roller and the character die roller and abuts against the character die roller. And the brake mechanism is arranged at the end part of the lower roller shaft. According to the marking equipment for the cold-formed section steel, the hydraulic machine controls vertical movement of the pressing roller, the brake mechanism controls rotation of the matrix roller, the hydraulic machine and the brake mechanism are matched with each other, the distance between marks on a steel belt can be accurately adjusted, and the marking equipment has the advantages of being simple in structure and convenient to control.
Owner:SHIJIAZHUANG STAIBO MACHINERY EQUIPMENT TECHNOLOGY CO LTD
Hot-dip aluminized silicon 1470MPa grade Q&P steel cold-formed steel sheet and its preparation method
The application provides a hot-dip aluminized silicon 1470MPa grade Q&P steel cold forming steel plate, and the main components of the base plate of the hot-dip aluminized silicon are as follows in percentage by mass: C: 0.18% to 0.28%, Si: 1.0% to 2.0%, Mn: 2.4% to 3.2%, P: 0.02% or less, S: 0.005% or less, Ti: 0.01% to 0.04%, B: 0.002% to 0.005%, and one or more of Cr, Mo, Cu and Nb can be additionally added, wherein Cr: 0.1% to 0.4%, Mo: 0.1% to 0.4%, Cu: 0.2% to 0.6%, Nb: 0.01% to 0.04%, and the balance is Fe and inevitable impurities. The hot-dip aluminized silicon is ingeniously carried out in the slow cooling stage, is perfectly matched with the heat treatment system, breaks the limitation that the hot-dip galvanized steel plate must be over-aged at high temperature for a short time, can make the bainite transformation sufficient, and is beneficial to the mechanical properties of the steel plate; the hot-dip aluminized silicon 1470MPa grade Q&P steel produced by the application has super-high strength and good plasticity at the same time.
Owner:ANGANG STEEL CO LTD
Prefabricated truss capable of being transported in folding mode
The invention provides a preassembled truss capable of being folded for transportation, which is composed of an upper chord member, a lower chord member, a plurality of first web members and a plurality of second web members, and the first web members and the second web members are continuously and alternately arranged between the upper chord member and the lower chord member to form a continuous triangular stable structure; each of the upper chord member and the lower chord member consists of two parallel cold-formed section steels; in a to-be-folded state, two ends of the first web member are respectively fixed between the two cold-formed section steels of the upper chord member and the lower chord member through movable connecting pieces; one end of the second web member is fixed between the two cold-formed section steels of the upper chord member through a movable connecting piece, and the other end of the second web member is separated from the lower chord member. According to the truss, the folding form that the upper chord and the lower chord are completely attached can be achieved, and in the transportation stage, due to the linear folding structure of the truss, the overall transportation size of the truss can be fully reduced, and the transportation cost is saved to the maximum extent; nodes for on-site construction and assembly are few, and labor cost is effectively reduced while the strength of the truss is guaranteed.
Owner:SHANGHAI OPEN STEEL JOIST +1
A new type of cold-formed steel frame-double X-shaped bracing structure
The present application relates to cold-formed steel structure technical field, disclose a kind of novel assembly type cold-formed steel frame-double layer X-shaped support structure, wherein, frame body is connected by a pair of cold-formed steel beam and a pair of cold-formed steel column;A pair of support units are arranged in parallel in frame body, and support unit includes a pair of end plate, energy dissipation section and four cold-formed steel supports, energy dissipation section is connected between a pair of end plate by high-strength bolt, and two cold-formed steel supports are connected on end plate, and four cold-formed steel supports are arranged in X shape;Four corner joint plates are arranged at four inner corners of frame body, and cold-formed steel beam, cold-formed steel column and cold-formed steel support are connected on corner joint plate by high-strength bolt;A pair of middle joint plates are arranged between two energy dissipation sections, and cold-formed steel column and cold-formed steel support are connected on middle joint plate by high-strength bolt, and the present application can solve the problems, such as low shear bearing capacity and weak energy dissipation capacity of traditional cold-formed steel composite wall, after the action of earthquake, only damaged energy dissipation section needs to be replaced to achieve the purpose of repairing structure.
Owner:CHONGQING JIAOTONG UNIV
Cold-formed steel with end-connection assistance
The utility model discloses a cold -bending section steel with end supplementary connection positioning belongs to cold -bending section steel technical field, including cold -bending section steel body, dovetail block, dovetail groove, clamping slot, clamping plate, insertion slot, stiffened plate, spacing rod, round plate and screw, the opposite end of cold -bending section steel body is provided with each other adaptation dovetail block and dovetail groove, clamping plate and clamping slot, stiffened plate and insertion slot are used for realizing the primary positioning of vertical and front -back direction when butting, and spacing rod is suitable for transversely penetrating clamping plate and stiffened plate after butt joint to limit transverse displacement. The utility model discloses through multiple groups structure cooperation positioning, and through spacing rod transverse locking, solved the section steel butt joint positioning difficult, connection structure unstable, the problem of easy displacement in multidirectional in prior art, has the beneficial effect of accurate positioning, multidirectional location, stable and reliable structure, convenient assembly.
Owner:JIANGSU HUALING COLD FORMING TECH CO LTD
Frame profile for a solar module
Frame profile (1) made of cold-formed steel strip for receiving a photovoltaic laminate, comprising - a frame groove (3) for inserting the laminate, - a hollow chamber (5) for torsional stiffening and - at least one frame leg (7), characterized by the fact that at least one free sheet metal end (9, 11) is arranged outside the frame groove (3) and directed downwards, optionally (a) the two free sheet metal ends (9, 11) on the top (13) or on the bottom (15) of the frame profile (1) are connected to each other by a folded or hemmed joint (17) whose fold faces downwards, and / or (b) a downwardly projecting flange of the steel strip is formed on the underside (15) of the frame profile (1).
Owner:HANWHA Q CELLS GMBH
Fabricated house profile steel shear wall structure
The invention discloses a fabricated house profile steel shear wall structure, and relates to the technical field of building construction.The fabricated house profile steel shear wall structure comprises a floor area used for forming the bottom face and a shear wall area connected with the bottom face, and during casting, the floor area and the shear wall area are connected and then integrally cast and formed. The floor area and the shear wall area comprise prefabricated parts used for forming a main body, reinforced steel meshes and / or integrated plates are arranged on the outer sides of the prefabricated parts, the prefabricated parts comprise profile steel forming a frame and steel bars located on the inner side of the frame in a crossed mode, and connecting parts are arranged at the crossed positions of the steel bars and used for limiting the steel bars. The strength of the prefabricated part after a floor area and a shear wall area are formed is guaranteed by enhancing the stability of the steel bars and the frame, it is guaranteed that the steel bars and the cold-formed section steel do not slip or deform or are locally crushed in the pouring process, and the cooperative work performance among the steel bars, the cold-formed section steel and concrete is maximized.
Owner:HEBEI JIZHIXIANGSHU TECH CO LTD
Fabricated cold-bending C-shaped steel lateral support and approximate design method
ActiveCN119989464AGeometric CADDesign optimisation/simulationClassical mechanicsStructural engineering
The invention discloses a fabricated cold-bending C-shaped steel lateral support and an approximate design method, belongs to the technical field of building structure test equipment, is suitable for out-of-plane support of a truss structure, has high liberalization, and can be freely spliced according to the required size. The cold-bending C-shaped steel lateral support is formed by connecting a support body structure, a transverse connecting component, an auxiliary supporting component and a bottom fixing piece. The support body structure comprises two support bodies and is of a multi-layer left-right symmetrical structure formed by splicing a plurality of cold-bending C-shaped steel triangular splicing components, each cold-bending C-shaped steel triangular splicing component is formed by sequentially connecting the concave sides of three pieces of C-shaped section cold-bending steel in a punching mode, and the connecting end points are connected and fixed through self-tapping screws. According to the method, stable lateral support can be provided for the truss by designing the cold-bending C-shaped steel triangular splicing component and the support main body structure, and the stress accuracy of the truss and the test safety are ensured through support displacement checking calculation in the design method.
Owner:CHINA CONSTR FIRST BUILDING (GRP) CORP LTD +1
Calculation system
This invention provides a calculation system capable of determining the reduction in manufacturing costs of steel structures when hot-formed steel pipes are used as steel pipe columns instead of cold-formed steel pipes. [Solution] The calculation system 10 for calculating the reduction rate of manufacturing costs in a steel frame structure composed of connected steel pipe columns and beams calculates the reduction rate of manufacturing costs of a steel frame structure when hot-formed steel pipes are used as steel pipe columns instead of cold-formed steel pipes, based on the weight reduction rate of the steel pipe columns, the ratio of the material cost of hot-formed steel pipes to the material cost of cold-formed steel pipes for steel pipe columns, the ratio of the processing cost of cold-formed steel pipes to the material cost of cold-formed steel pipes for steel pipe columns, the ratio of the processing cost of hot-formed steel pipes to the material cost of cold-formed steel pipes for steel pipe columns, the ratio of the material cost of beams to the material cost of cold-formed steel pipes for steel pipe columns, and the ratio of the weight of beams to the weight of cold-formed steel pipes for steel pipe columns.
Owner:NAKAJIMA STEEL PIPE CO LTD
Establishment method of time-varying random constitutive model of corrosion cold-formed steel based on random field
This invention relates to a method for establishing a time-varying stochastic constitutive model of rusted cold-formed steel based on random fields. Based on corrosion degree parameters and a two-dimensional power spectral density equation, this invention can not only characterize the degree of uniform corrosion but also evaluate the degree of non-uniform corrosion. Furthermore, it can generate a large number of rusted surface morphologies of cold-formed steel that satisfy a certain statistical distribution through computer simulation. Based on the generated rusted surface morphology data, the mechanical properties of the cold-formed steel are numerically calculated using a finite element model. This method imports the large-scale generated rusted surface data into the finite element model of the cold-formed steel through a program, taking into account the discreteness and uncertainty caused by corrosion. The finite element numerical calculation results are highly consistent with the experimental results. Furthermore, this invention proposes a time-varying stochastic constitutive model of rusted cold-formed steel based on random fields, solving the problem that the constitutive model of rusted cold-formed steel is still based on deterministic experiments, and realizing the prediction of the time-varying stochastic constitutive model of cold-formed steel.
Owner:EAST CHINA JIAOTONG UNIVERSITY