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333 results about "Transverse shear" patented technology
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There's transverse shear stress, which occurs in beams and it happens because of bending forces (transverse to the length of the beam). To satisfy static equilibrium on a stress element in that beam you will have transverse shear stress and longitudinal.
Compound type connection shear wall structure and assembling method thereof
ActiveCN105442727AEasy assembly and constructionPrecise construction and assemblyWallsFloor slabUltimate tensile strength
The invention discloses a compound type connection shear wall structure and an assembling method thereof. The compound type connection shear wall structure comprises N shear wall components of the same structure, wherein every two adjacent shear wall components are connected through a compound shear key and a key groove so that a compound type connection shear wall can be formed. Due to the mutual guide-in effect of the compound shear keys and the key grooves, the construction precision is improved, and eccentric compression generated by inaccurate assembling is avoided. Because the shear key on each shear wall component below can bear the weight of the corresponding shear wall component above when the next layer is assembled, assembling of a wall body of a previous layer can be instantly conducted after floor pouring is completed without waiting till floor concrete reaches the strength, and the assembling cycle of floors can be greatly shortened. The shear keys of the shear wall components below are embedded in the key grooves of the shear wall components above, the shear keys can bear transverse shearing force, the shear resistance of the structure is enhanced, and reliability of the structure is enhanced.
Owner:ZHEJIANG UNIV +2
Threaded fastener transverse vibration test device and method
ActiveCN103954419ARealize high frequency vibrationRealize stepless amplitude modulationVibration testingEngineeringEngineering technician
The invention discloses a threaded fastener transverse vibration test device and method. The device comprises a transverse vibration platform, a transmission system, a clamp system, an installation base and a measuring device; one end of the transmission system is fixed to the vibration platform through a bolt, and the other end of the transmission system is fixed to a movable plate in the clamp system; a fixed base of the clamp system is fastened to the installation base through a T-shaped groove; the transmission system is provided with a pull pressure sensor, and the clamp system is provided with a gasket type force sensor. The device and method can simulate high-frequency vibration, achieve electrodeless amplitude modulation, monitor changes of transverse shear force and axial pre-tightening force of a threaded fastener in a vibration process in real time, and test the anti-loose characteristic of single bolts and bolt sets (distributed in a linear, rectangular and circular mode) with different specifications. The device and method provide a basis platform and data support for engineering technicians to analyze anti-loose performance of various threaded fasteners and assess effectiveness of various anti-loose methods.
Owner:XI AN JIAOTONG UNIV +1
Static birefringent polarizing inteference imaging spectrometer
InactiveCN101046409AIncrease the working bandImprove transmittanceInterferometric spectrometryOptical elementsBeam splitterPrism
The static birefringent polarizing interference imaging spectrometer consists of a pre-telescope system, a polarizing interferometer, an imaging lens set and an area array detector arranged coaxially and successively in the incident light direction, as well as a computerized signal treating system connected to the output of the area array detector. The polarizing interferometer consists of a polarizer, a Savart polariscope and an analyzer. The present invention adopts Savart polariscope as the transverse shearing beam splitter, and the advantages of infinitely far target, linear light path, simple structure, high stability, high S / N ratio, high resolution, etc.
Owner:XI AN JIAOTONG UNIV
Convex lens focal length measuring device and method
ActiveCN104111163AHigh precision measurementIntuitive interference patternTesting optical propertiesFiberPoint light source
Disclosed is a convex lens focal length measuring device and method. The device is composed of a 1053 nm fiber point light source, a laser range finder, a precise moving guide rail, a convex lens to be measured, a shearing interference plate, a frosted glass screen and a CCD (charge coupled device). A user observes the fringe pattern formed on the shearing interference plate by output beams through the CCD after the lens is collimated, then adjusts the moving direction and the position of the fiber point light source on the precise moving guide rail, enables the 1053 nm point light source to finally be positioned on a focal plane, and then obtain the focal length of the lens through measurement of the laser range finder. The convex lens focal length measuring device has the advantages of being simple in structure, convenient to adjust and high in measuring precision and can help evaluate the optical quality of the convex lens through transverse shearing interference fringes generated during the measuring process to provide valuable detecting data for installation, calibration and optical manufacture of convex lenses.
Owner:SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
Novel numerical control silicon steel sheet transverse shearing line device
ActiveCN105397495AReduce distanceShorten the lengthOther manufacturing equipments/toolsShearing machine accessoriesNumerical controlPunching
The invention discloses a novel numerical control silicon steel sheet transverse shearing line device. The novel numerical control silicon steel sheet transverse shearing line device comprises a control center, a discharging device and a feeding channel. The feeding channel is sequentially provided with a front feeding device, a first punching device, a V-shaped opening shearing device, a second punching device, a rear feeding device, a swing shearing device and a discharging table. A material collecting device is arranged behind the discharging table. The material collecting device comprises a magnetic conveying belt and a sheet stacking table. The numerical control silicon steel sheet transverse shearing line device has the beneficial effects that the front feeding device and the rear feeding device are arranged, waste of sheets is reduced, and the shearing precision is improved; twisting and bulging of silicon steel sheets are avoided, and high-speed conveying of the silicon steel sheets is achieved; the first punching device and the second punching device are symmetrically distributed on the front side and the rear side of the V-shaped opening shearing device, one-step punching is achieved, time is saved, and the production efficiency is improved; and according to the material collecting device, the magnetic conveying belt is matched with the sheet stacking table, shorn silicon steel sheets are automatically stacked in order, operation of workers is reduced, human resources are saved, and efficiency is improved.
Owner:CANWIN AUTOMATIC EQUIP CO LTD
High structural efficiency blades and devices using same
ActiveUS7322798B2Reduce weightImprove structural performancePropellersRotary propellersEngineeringMechanical engineering
A blade for a rotor has integral stiffeners with at least one of unidirectional caps configured to carry blade bending loads in axial tension or webs to carry transverse shear resulting from blade bending.
Owner:GENERAL ELECTRIC CO
Phase shifting lateral direction shearing interferometer
InactiveCN101113927AAutomate processingImprove performanceOptical measurementsUsing optical meansPhase shiftedParallel plate
A phase shift transverse shear interferometer consists of a first polarizer, an input parallel plate, a second polarizer, a third polarizer, a first shear plate, a second shear plate, an output parallel plate, a quarter wave plate, a detecting deflection machine, a CCD camera and a computer, the phase shift transverse shear interferometer is an equal optical path interference optical system, the shear quantity can be continuously adjusted, which is very applicable to the wavefront measurement of the short interference length, and satisfies the wavefront measurement of the different light beam bore and the measurement precision.
Owner:SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
Electrode for in-situ electrical measurement for diamond anvil cell and method for producing the same
InactiveCN101509947ANo breakage problemGood chemical stabilityMaterial analysis by electric/magnetic meansElectrical testingBoronDiamond thin film
The invention discloses an in-situ electrical measuring electrode that is used in diamond-pair anvil cells and a manufacturing method thereof, and belongs to the technical field of high-temperature and high-voltage devices. Four electrodes (1) are deposited on the surface of a diamond anvil cell (8) and distribute from an anvil surface to a lateral surface of the diamond anvil cell (8); the electrodes (1) are diamond films doped with boron; a diamond insulating layer (2) covers the anvil surface and the lateral surface of the diamond anvil cell (8) as well as the electrodes (1) thereof; the electrodes (1) are exposed at one end of the anvil surface, the exposed position lies inside a sample cavity (9), and the electrodes (1) are exposed at one end of the lateral surface and connected with an electrode lead (5). A diamond film microcircuit and the diamond insulating layer are simultaneously integrated onto the surface of the diamond anvil cell by utilizing the film deposition technique, the nanometer seeding technique, the masking technique and the photolithographic method. The manufacturing method of the in-situ electrical measuring electrode prevents the electrode from being destroyed by transverse shearing force and overcomes the electrode corrosion by samples under the high-voltage condition, thus widening the research field of electrical in-situ measurement under high voltage.
Owner:JILIN UNIV
Cold rolling process for 304 stainless steel 2B base material for decorative panel
ActiveCN106807751AReduce depthReduce surface roughnessRoll force/gap control deviceBelt grinding machinesFault coverageSolution treatment
The invention discloses a cold rolling process for a 304 stainless steel 2B base material for a decorative panel. The cold rolling process specifically comprises the following steps of: solution treatment, online pickling, pickling, coping, cold rolling, cold rolling and annealing, pickling after cold rolling and annealing, leveling, shearing and packaging by means of a transverse shear. The cold rolling process disclosed by the invention has the advantages that by combining optimization of a cold rolling step in three aspects, the surface roughness of the final 2B base material is low, the fault coverage is extremely small, the surface of strip steel is uniform and smooth, and the 304 stainless 2B which is excellent in grinding and polishing properties can directly replace a 304 stainless BA plate to be used as the base material of the decorative panel which is relatively high in surface requirement. The production process is simpler than a step of the 304 stainless steel BA plate, so that the production cost is lowered, and the processing efficiency is increased.
Owner:GANSU JIU STEEL GRP HONGXING IRON & STEEL CO LTD
High-strength abrasion-resistant monofilament yarn and sleeves formed therefrom
InactiveUS20050136255A1High tensile strengthImprove wear resistanceLayered productsPedestrian/occupant safety arrangementYarnMolten state
A filamentary member and a sleeve made therewith are disclosed. The filamentary member has an inner core formed of a material with a high tensile strength. The core is surrounded by an outer sheath formed of an abrasion resistant material. The filamentary member is formed by co-extruding the core and the sheath together through a spinnerette having coaxial nozzles. When spun from a molten state, the core and sheath fuse at the interface between them to provide transverse shear continuity. The sleeve may be woven, knitted or braided using the filamentary members and has the characteristics of abrasion resistance and high tensile strength without the need for separate yarns having these characteristics.
Owner:FEDERAL MOGUL WORLD WIDE
Fibre-reinforced compound material core and preparation method thereof
InactiveCN102602083ASmall coefficient of thermal expansionImprove securityGlass/slag layered productsAdhesiveResin coating
Owner:ZHEJIANG ZHONG JU COMPOSITE MATERIAL CO LTD +1
Hollow slab bridge and construction method thereof
InactiveCN102561169ASimplify prefabricationSimple processBridge erection/assemblyTongue and grooveTransverse shear
The invention discloses a hollow slab bridge, which comprises side hollow slabs on two sides and middle hollow slabs continuously laid in the middle, wherein the middle part of one side of each middle hollow slab is provided with a sunken groove, and the middle part of the other side of each middle hollow slab is provided with a raised strip; the lower surface of the groove is an upwards inclined bevel or plane, the upper surface of the groove is a downwards inclined bevel or plane, the lower surface of the raised strip matched with the groove is an upwards inclined bevel or plane, and the upper surface of the raised strip is a downwards inclined bevel or plane; and one side of each side hollow slab close to the edge is a straight edge, and the other side of each side hollow slab is provided with a groove or a raised strip matched with the adjacent middle hollow slab. A construction method for the hollow slab bridge comprises the following steps of: prefabricating the hollow slabs; hoisting the hollow slabs; and treating the grooves and the raised strips. Tongue and groove joints are not required in the hollow slab bridge, and the transverse shearing force is not transferred through concrete among the tongue and groove joints, so that the transverse integrity of the hollow slab bridge is improved, and the shearing force transfer capacity among the slabs is enhanced.
Owner:ZHENGZHOU UNIV
Organic thin film transistor, preparation method and preparation device thereof
InactiveCN103151461AImprove performanceHigh yieldLiquid surface applicatorsSolid-state devicesInsulation layerLiquid-crystal display
The invention relates to the field of liquid crystal display and discloses an organic thin film transistor, a preparation method and a preparation device thereof. The preparation method for the organic thin film transistor comprises the steps that a grid electrode, a grid insulation layer, an organic semiconductor layer, a source electrode and a drain electrode are formed on a substrate; the organic semiconductor layer forming procedures include that a solution in which an organic semiconductor material used for forming the organic semiconductor layer is dissolved is subjected to blade coating, so that the organic semiconductor layer is formed. By adopting the technical scheme of the invention, in the blade coating process, the transverse shearing force applied on the solution in each row or column of the substrate is consistent, the thickness of the solution formed through the blade coating is consistent, the state of each device is equal, the difference between the edge and the center of the substrate, caused by centripetal force with the adoption of the rotary coating technique is avoided, and the defect-free rate of the organic thin film transistor devices is improved.
Owner:BOE TECH GRP CO LTD
Formwork combination reinforcing and supporting structure used in short-leg shear wall construction and construction method thereof
InactiveCN103967271AImprove stabilityAccurate horizontal positionForms/shuttering/falseworksAuxillary members of forms/shuttering/falseworksSupporting systemArchitectural engineering
The invention relates to a formwork combination reinforcing and supporting structure used in short-leg shear wall construction and a construction method thereof. The structure comprises formworks used for pouring a longitudinal short-leg shear wall and a transverse short-leg shear wall and split bolts between the formworks, and back supports of the formworks are composed of secondary edges and primary edges. The structure further comprises a plurality of horizontally arranged wall hoop bolts in the height direction of walls on the peripheries of the longitudinal shear wall formwork and the transverse shear wall formwork, wherein the wall hoop bolts are used for connecting and reinforcing a whole formwork enclosure system and the ends of the wall formworks in a tensioning mode. The lower portion of the formwork enclosure system is fixedly connected with short bolts pre-buried in last process, and tensile-connection bottom sealing is formed. For installation of the formworks of the short-leg shear walls, the structures of the formworks themselves are used in combination with the wall hoop bolts, therefore, the stability of a short-leg shear wall formwork supporting system is enhanced, the accuracy of the formworks in horizontal position and structure size is guaranteed, the effects on formwork supporting and reinforcement are achieved, and the purpose of lowering manufacturing cost is realized.
Owner:ANHUI HUALI CONSTR GRP
City subway overlapped shield tunnel segment structure adopting special longitudinal connecting pieces
ActiveCN104790974AImprove tensile propertiesImprove bending resistanceUnderground chambersTunnel liningTransverse shearAdjacent segment
The invention discloses a city subway overlapped shield tunnel segment structure adopting special longitudinal connecting pieces. The city subway overlapped shield tunnel segment structure is formed by splicing a plurality of annular segments. A plurality of steel clamping grooves are embedded in the two sides of the segments annularly. Every two adjacent segments are longitudinally connected through the multiple steel connecting pieces. The two ends of each steel connecting piece are buckled in the corresponding steel clamping grooves in the two corresponding adjacent annular segments. The connecting pieces adopting the embedding and buckling technology are easy and convenient to manufacture and install. A cavity formed after the connecting pieces are assembled is filled and compacted through embedded holes, so that it is ensured that the connecting pieces are fastened and reliable and meet the requirement for durable using. By the application of the city subway overlapped shield tunnel segment structure, conventional tunnel periphery soil body passive enforcement is changed into tunnel segment active enforcement in the overlapped tunnel design, the longitudinal tension, bending and transverse shear resisting performance of the tunnel is greatly improved, the downward shield tunnel enforcement measure is simplified, the building cost of projects is reduced, and the influences of upward tunnel running train dynamic loads on a downward tunnel are reduced.
Owner:ZHEJIANG PROVINCIAL INST OF COMM PLANNING DESIGN & RES CO LTD
Device and method for inscribing fiber period adjustable fiber grating
ActiveCN104765099AAchieve preparationImprove stabilityCladded optical fibreOptical waveguide light guideFiberBeam expander
The invention discloses a device and method inscribing a fiber period adjustable fiber grating. A laser, a beam expander, a convergent lens, a semi-transparent and semi-reflective mirror, a reflector, a Fourier lens, a cylindrical mirror and the like are adopted to form a transverse shear Sagnac interference fiber grating inscribing light path, a linear interference pattern high in contrast ratio and adjustable in period is obtained and acted on a fiber core of a fiber (or other guided wave materials), and the grating is inscribed. The period of the inscribed grating can be continuously changed online by adjusting the transverse shear amount of a Sagnac interferometer, and the inscribing of the period adjustable fiber grating is achieved. Fine adjustment of the shear amount of the interferometer is achieved through a micro displacement platform, and the needed any grating period can be obtained according to an equation. The light path is adjusted easily, the requirement for the coherence of a laser light source is low, the stripe contrast ratio is high, stability is good, the grating period can be continuously adjusted online, and the problems that in an existing mask plate grating inscribing scheme, the cost for replacing a mask plate is high, and the light path is adjusted complexly are solved.
Owner:BEIHANG UNIV
Transverse shear digital holographic method capable of eliminating light field distortion
ActiveCN104713495ASolve the problem of data dimensionality reductionUsing optical meansThree dimensional measurementReconstruction algorithm
The invention discloses a transverse shear digital holographic method capable of eliminating various kinds of light field distortion. Three digital holograms with object planes mutually having tiny translation are adopted, phase distortion introduced by illuminating light and reference light is eliminated through a wavefront differential, and three-dimensional data of an object plane to be detected are recovered through the transverse shear wavefront reconstruction algorithm. A reflection-type experimental detection light path is designed, and unknown wavefront distortion is introduced into the light path so that experimental verification can be conducted on the algorithm. Results show that under the conditions that strict azimuth calibration is not conducted on the object planes or CCD recording surfaces, transverse translation precision is 0.01 mm and the translation amount is 0.02 mm, root mean square error (RMSE) of the phase in the method and a standard phase is about lambda / 19, and error sources are analyzed. The method can be used for ultra-precise optical three-dimensional measurement and has a chance of reducing the light field distortion and improving measurement precision.
Owner:ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
Transverse shearing interferometer agglutination checking method
InactiveCN101122456AImprove control accuracyReduce interpretation errorUsing optical meansMountingsLaser lightAgglutination
A scuffing detection method for a lateral shearing interferometer is provided. The lateral shearing interferometer to be scuffed is coated evenly with photosensitive glues and is vertically put on a high precision optical plate of a precision adjusting platform. The laser light output by a laser forms into even parallel light on the lateral shearing interferometer to be scuffed. Interference fringes formed on the send out end of the lateral shearing interferometer to be scuffed are received by a digital camera and are displayed in real time on a computer. The CCD pixel number M0 of the digital camera occupied by N0 interference fringes is calculated. Two prisms are moved slightly to read CCD pixel number M of the digital camera occupied by N0 interference fringes. When the CCD pixel number M becomes to be M0, the two prisms are set not to move. The two scuffed prisms are solidified. The invention solves a technical problem in background technology that the lateral shearing amount of the lateral shearing interferometer is hard to be precisely controlled. The error of the lateral shearing amount of the invention can be controlled within 1%.
Owner:XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
Prefabricated underground diaphragm wall and method for constructing outer basement wall and floor slabs
ActiveCN104018518AFast dryingImprove lateral shear resistanceArtificial islandsExcavationsSlurry wallBasement
The invention discloses a prefabricated underground diaphragm wall and a method for constructing an outer basement wall and floor slabs. The prefabricated underground diaphragm wall comprises single wall bodies (1) and pile foundations (2). The single wall bodies (1) are longitudinally stacked so as to form a wall line. All the single wall bodies (1) and the pile foundations (2) of the wall line are tensioned through prestressed reinforcement bars (7) and prestress holes (3) are filled with cement paste. The inner surface of each single wall body (1) is provided with a row of preformed holes and a pre-buried steel plate. Each preformed hole is provided with a connecting reinforcement bar inside. The method is characterized in that the prestressed reinforcement bars (7) are tensioned, so that all the single wall bodies (1) and all the pile foundations (2) of the wall line are tensioned, and horizontal reinforcement bars of a floor slab reinforcement cage extend into the preformed holes and are in butt joint with the connecting reinforcement bars. According to the prefabricated underground diaphragm wall and the method for constructing the outer basement wall and the floor slabs, the construction speed can be increased, a working period can be shortened, the transverse shearing resistance and longitudinal pressure bearing capacity are good, and underground diaphragm wall concrete does not need to be knocked off when the floor slabs are constructed.
Owner:NINGBO INST OF TECH ZHEJIANG UNIV ZHEJIANG
A wind turbine blade with angled girders
InactiveCN102066747AIncreased torsional stiffnessIncrease the torsional eigenfrequencyWorking fluid for enginesMachines/enginesTurbine bladePulp and paper industry
The present invention relates to a reinforced blade for a wind turbine, particularly to a blade having a new arrangement of two or more girders in the blade, wherein each of the girders is connected to the upper part and the lower part of the shell and forms an angle with another girder thereby strengthening the shell against transverse shear distortion.
Owner:布拉德纳公司
Spatial filter debugging device and method
ActiveCN104570380AHigh precision measurementIntuitive interference patternOptical elementsTransverse shearLaser
The invention provides a spatial filter debugging device running on a vacuum condition and a spatial filter debugging method. The device and method have the advantages that the structure is simple, adjustment is convenient, and the debugging accuracy is high; moreover, the optical quality of a spatial filter can be evaluated by means of transverse shear interference fringes produced in the measuring process, so the assembling and calibration level and the detection level of the spatial filter can be increased, and technical studies of laser drivers can be supported.
Owner:SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
Shock insulation rubber support
InactiveCN103266556AImprove reset effectGood auxiliary energy consumption performanceBridge structural detailsShearing deformationTransverse shear
The invention provides a shock insulation rubber support which comprises a base plate (1) and a top plate (2). A rubber pad (3), a middle steel linear plate (4), a polyfluortetraethylene plate (5) and a stainless steel sliding plate (6) are arranged between the base plate (1) and the top plate (2). The base plate (1) and the top plate (2) are connected through horizontal lead rods (702). The top plate (2) is connected with the middle steel linear plate (4) through vertical lead rods (701). Reset springs (9) are further arranged between the middle steel linear plate (4) and the top plate (2). When vertical tensile force and transverse shear force are generated under the action of earthquake, the horizontal lead rods between the base plate and the top plate can offset the vertical tensile force and part of the transverse shear force on the basis of maintaining integrality of the support to limit the vertical displacement. The vertical lead rods arranged between the top plate and the middle steel linear plate can offset part of the shear force and can reduce influence of vibration on a bridge on the upper portion of the support due to the fact that shearing deformation of the lead rods need to consume energy.
Owner:CENT SOUTH UNIV +1
Long-wave infrared space modulation interference miniaturizing method
ActiveCN103674243ASmall sizeReduce the difficulty of growingSpectrum generation using multiple reflectionOptical axisMiniaturization
The invention relates to a long-wave infrared space modulation interference miniaturizing method. The method is characterized in that an interference assembly is composed of a spectroscope, a pyramid reflector I, a pyramid reflector II and two aperture diaphragms; an included angle between the spectroscope and parallel incident light is 135degree; from the optical axis position of reflected light, the top position of the pyramid reflector I starts to move anticlockwise for 1 / 4 transverse shear amount along the direction vertical to the optical axis of the reflected light; from the optical axis position of transmitted light, the top position of the pyramid reflector II starts to move anticlockwise for 1 / 4 transverse shear amount along the direction vertical to the optical axis of the transmitted light; and the two aperture diaphragms are respectively arranged at the top positions of the two pyramid reflectors, and are respectively placed vertical to the optical axes of the reflected light and the transmitted light. Under the condition that optical parameters are consistent, the size of the spectroscope is decreased, the sizes of the interference assembly and a spectrometer are effectively controlled, the difficulties in material growing and processing are reduced, and the cost is saved.
Owner:KUNMING INST OF PHYSICS
Mounting method and mounting bases for locomotive underframe parts
The invention discloses a mounting method and mounting bases for locomotive underframe parts, and belongs to the technical field of railway locomotives. In order to mount and dismount the parts on a locomotive body underframe conveniently and adjust the positions of the locomotive underframe mounting parts, sliding rails are welded to the locomotive body underframe in advance, mounting beams are welded on one part to be mounted, the mounting bases are arranged at the ends of the mounting beams, then guide rails on the mounting bases are matched with the sliding rails, and the mounting bases are fixed by limiting stopping blocks and positioning stopping blocks. The mounting method is suitable for smoothly mounting most of locomotive underframe parts, the weights of the mounted parts are borne by a locomotive body and the mounting bases, and bolts are prevented from bearing transverse shear force in the locomotive operation process. The sliding rail type mounting structure is used by the locomotive underframe parts, the positions of the locomotive underframe mounting parts can be adjusted easily, the mounted parts can be prevented from abrading pipelines and cables under a locomotive, and therefore the operation safety of the locomotive is improved.
Owner:CRRC DALIAN CO LTD
High-damping composite stay cable based on carbon fibers and steel strands
ActiveCN104213507ARaise the log reduction rateAccelerate the attenuation of vibrationCable-stayed bridgeBridge structural detailsFiberVibration attenuation
The invention discloses a high-damping composite stay cable based on carbon fibers and steel strands, and relates to the field of stay cables. The high-damping combined stay cable comprises a core layer, 2-4 composite layers and 1-2 layers of sheaths which are arranged in sequence from inside to outside, wherein a sticky elastic damping material is filled between the core layer and each composite layer; the core layer consists of a plurality of high-intensity steel strands which are tightly arrayed; the composite layers consist of a plurality of composite fibers which are tightly arrayed; the adjacent composite layers are tightly attached; the composite fibers are prepared from a high-intensity steel wire and six carbon fibers; the six carbon fibers wrap the periphery of the high-intensity steel wire and are twisted to form a whole. Vibration attenuation of the stay cable can be accelerated, and the wind-resistant stability of an ultralong stay cable is effectively improved; the weight of the stay cable is reduced, and the transverse shear strength of the stay cable is guaranteed; furthermore, single-cable transportation and cable hanging can be realized, and the ultralong stay cable construction difficulty is reduced.
Owner:CHINA RAILWAY MAJOR BRIDGE ENG GRP CO LTD
Low-anisotropic-index high-intensity Cu-Ni-Si alloy and preparing process thereof
The invention discloses a low-anisotropic-index high-intensity Cu-Ni-Si alloy and a preparing process thereof. The low-anisotropic-index high-intensity Cu-Ni-Si alloy and the preparing process are suitable for cold rolling copper-based thin panels for lead frames. The alloy comprises, by chemical mass percent, 2%-3% of Ni, 0.5%-1.0% of Si, 0.1%-0.5% of Sn, 0.05%-0.1% of Fe, 0.1%-0.3% of Mg, 0.05%-0.08% of Zn, 0.2%-0.5% of RE and the balance Cu. Yttrium-based heavy rare earth is added for purifying a copper solution, and Ni2Si precipitation is improved; meanwhile, harmful texture is effectively restrained through the process that low temperature annealing is combined with grading solid dissolving before solid dissolving; and by controlling the cold rolling reduction rate, a transverse shearing belt is obtained for a product, and anisotropism is greatly improved. The alloy has the beneficial effects that the strength of extension ranges from 650 MPa to 750 MPa, the elongation ranges from 13% to 18%, the in-plane anisotropy (IPA) of the intensity is smaller than 6%, the in-plane anisotropy (IPA) of the elongation is smaller than 8%, and defects of warping, deformation and cracking of the Cu-Ni-Si alloy in the blanking process can be effectively reduced.
Owner:LONGNAN LONGYI HEAVY RARE EARTH TECH CO LTD
Pole shock-resistant mechanism of
ActiveCN105347758AHigh compressive strengthImprove crack resistanceTowersTransverse shearBearing capacity
The invention belongs to the technical field of power transmission line construction projects and particularly relates to a pole shock-resistant mechanism. The pole shock-resistant mechanism provided by the invention comprises a base, wherein a positioning groove is formed on the upper end face of the base; a vertically oriented spiral pressure spring is arranged between the bottom of the pole and the positioning groove to close the bottom of the pole and the base; a disc loop is arranged around the pole; isometric round holes are formed on the disc loop; and the base and the disc loop are poured by concrete. The pole shock-resistant mechanism provided by the invention can effectively improve the ductility, the transverse shearing capacity and the bending bearing capacity of the pole, so that the reliability of the pole is improved, and the safety and stability of power transmission lines are ensured.
Owner:STATE GRID HENAN TONGBAI POWER SUPPLY CO
Method for improving shear strength of nonmetal anti-floating anchor
ActiveCN103306283AIncreased shear strengthReduce adverse effectsBulkheads/pilesGlass fiber reinforced polymerEconomic benefits
The invention belongs to the technical field of anti-floating anchors of building construction, and relates to a method for improving the shear strength of an interface of an inner anchorage section and an outer anchorage section of a nonmetal anti-floating anchor. According to the method, a steel arm is additionally mounted on an anchor body, at the inner anchorage section and the outer anchorage section, of the nonmetal anti-floating anchor, is a seamless steel pipe, and is tightly connected with the anchor and a bottom plate of a building (structure) at the outer anchorage section, tightly connected with the anchor and mortar at the inner anchorage section, and tightly bonded on the outer side of a GFRP (Glass Fiber Reinforced Polymer) anchor; since the rigidity of the seamless steel pipe is higher, the defect of lower transverse shear strength of the GFRP anchor is overcome; the steel arm can provide the sufficient transverse shear strength under the action of horizontal load; and therefore, the purpose of limiting the transverse shear deformation of the GFRP anchor is achieved. The method is simple to operate, low in cost, high in reliability, and good in economic benefit, and has prominent substantial characteristics and significant progress, required devices are simple and easy to obtain, and the mounting and construction are convenient.
Owner:QINGDAO TECHNOLOGICAL UNIVERSITY
Instantaneous phase-shift transverse shear interferometer
InactiveCN101788344ASimple and fast operationEasy to operateOptical measurementsOptical elementsGratingBeam splitter
The invention relates to an instantaneous phase-shift transverse shear interferometer, which aims to solve the problems of troublesome operation, high requirements of systems for environment, large influence of environment on acquisition results in the prior art. The instantaneous phase-shift transverse shear interferometer provided by the invention comprises a parallel polarization beam splitter 2, a one-quarter wave plate 3, a two-dimensional rectangular grating 4, a first convex lens 5, a spatial filter 6, a second convex lens 7, a polaroid array 8 and a CCD 9 which are concentrically arranged in turn on a main optical axis, wherein the CCD 9 is connected with a computer 1; the direction of an optical axis of a crystal of the parallel polarization beam splitter 2 and an incident surface are at an included angle of 45 degrees; the direction of a fast axis of the one-quarter wave plate 3 is positioned on a plane at an angle of 45 degrees to the plane consisting of the direction of the optical axis of the crystal of the parallel polarization beam splitter 2 and the main optical axis; and the spatial filter 6 is arranged on a back focal plane of the first convex lens 5 and a front focal plane of the second convex lens 7. The interferometer has the advantages of reducing the requirements of the systems for environment and increasing measurement accuracy, along with easy operation.
Owner:XIAN TECHNOLOGICAL UNIV
Hyperspectral imaging device based on polarization interference and imaging method thereof
InactiveCN106289527AReduce processing difficultyReduce the difficulty of assembly and adjustmentSpectrum investigationRecovery methodBeam splitter
The present invention discloses a hyperspectral imaging device based on polarization interference and an imaging method thereof. The hyperspectral imaging device based on polarization interference is characterized in that a prepositive imaging objective lens, a diaphragm, a collimation objective lens, a polarization beam splitter, a lambda / 2 wave plate, an Savart plate and a lambda / 4 wave plate are arranged orderly in a co-optical axis manner, and an optical axis in which the above elements are located is a first optical axis; a polarization splitting prism, a postpositive imaging objective lens and a detector are arranged orderly in the co-optical axis manner, and an optical axis in which the above elements are located is a second optical axis; the first optical axis and the second optical axis are vertical. A light beam transmitted or reflected by a target passes the device and generates a two-dimensional image containing the interference information, and a corresponding spectral image of the target can be obtained by utilizing a Fourier transform spectrum recovery method to process the two-dimensional image. According to the present invention, the Savart plate and the lambda / 4 wave plate form a transverse shear beam splitter for the first time, so that an effective technical path can be provided for the hyperspectral imaging device which is stable in structure and low in complexity.
Owner:NANJING UNIV OF SCI & TECH
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