60results about How to "Significant practical value" patented technology

The invention relates to a bridge deck structure of a steel bridge, in particular to a steel and ultra-high performance concrete combined bridge deck structure, comprising a steel bridge deck, an ultra-high performance concrete layer is coated above the steel bridge deck, a bridge deck pavement layer is coated above the ultra-high performance concrete layer, and the ultra-high performance concrete layer is internally provided with reinforced bars. The steel and ultra-high performance concrete combined bridge deck structure has the advantages of small construction height, large stiffness, good binding performance between combined layers, good durability, good fatigue resistance, little vehicle impact and the like.

The invention discloses a steel-fiber concrete combined bridge deck structure with reinforced joints. The steel-fiber concrete combined bridge deck structure is mainly formed by assembling a plurality of steel plate-fiber concrete combined components, each component comprises a steel bridge deck plate and a prefabricated fiber concrete element cast on the steel bridge deck plate, reinforced joint structures are arranged in butt joint regions of two adjacent components and comprise cast-in-situ concrete elements and steel plate reinforcing components, the steel plate reinforcing components are covered by prefabricated fiber concrete elements and cast-in-situ fiber concrete elements, the steel plate reinforcing components and the prefabricated concrete elements are connected in a tongue-and-groove engaging mode for forming an integral fiber concrete layer, and the adjacent steel bridge deck plates are welded into an integral steel bridge deck plate layer. A construction method provided by the invention comprises the following steps that the steel-fiber concrete combined components are firstly manufactured, then, the combination and split joint is carried out, and next, the repeated sequential assembly is carried out. The steel-fiber concrete combined bridge deck structure and the construction method have the advantages that the tensile strength and the rigidity of local parts of the combined bridge deck structure can be improved, the joint seam stress is reduced, and the generation of cracks of paving layers is prevented.

The present invention relates to the process of preparing boron nitride nanotube, and relates to inorganic nanometer material. Non-toxic boron compound, such as boron chloride, boric acid, etc. as material is first ball ground for certain time, and then heated to over 800 deg.c in flowing ammonia or nitrogen and maintained for over 0.5 hr. The product after being cooled is cleaned in dilute hydrochloric acid, distilled water and alcohol and dried to obtain white powder as the boron nitride nanotube product. The process is simple, mild in condition and suitable for mass production, and has yield over 80 %. The prepared boron nitride nanotube is semiconductor and may be used in nanometer electronic device, nanometer structural ceramic material, hydrogen storing material, etc.

The invention relates to an image amplification processing method based on the edge direction difference. The processing method comprises the following steps of: amplifying an original image for k times, scanning the original image by forward scanning, and determining projection coordinates of four top points on a second-dimensional plane, wherein the four top points are not on the same plane and used for structuring the plane; judging the degree of the absolute difference of pixel diagonal lines of four top points; ensuring that the direction with lesser absolute difference of the diagonal line belongs to the edge direction, using the direction with greater absolute difference of the diagonal line as a border line, structuring a plane respectively; calculating the color value of the pixel to be plugged according to the formula and filling. According to the image amplification processing method based on the edge direction difference provided by the invention, the problem of sawtooth or fuzzy phenomenon appeared at the edge after amplifying the image or low operation efficiency is solved; when the image is amplified, the processing method is quick in speed and good in quality and has significant practical value.

The present invention provides an input device which enables a user to input desired information by simple operations even though a user has pressed a wrong button, as well as to make an information inputting position stationary.The input device in the present invention includes: a rotor; a section specifying unit specifying a section; a rotation amount detecting unit detecting a rotation amount from the specified section; a section corresponding information holding unit which holds correspondence relationship between each of the sections and a unit of information corresponding to each of the sections; an information group holding unit which holds, as a first information group, each of units of information associated with the corresponding section; an information specifying unit specifying a unit of information corresponding to the specified section based on the held correspondence relationship between the section and the unit of information; and an information selecting unit selecting, out of the held first information group, a predetermined unit of information according to the rotation amount with respect to the specified unit of information as a reference point.

The invention relates to the field of bridge pier reinforcing, in particular to a method for reinforcing a post-earthquake bridge pier through super-toughening fiber concrete. The damaged bridge pieris supported, failure concrete is chiseled away, a bearing platform face is roughened, and anchoring steel bars and original steel bars are welded; the original steel bars are welded, the anchoring steel bars in the super-toughening fiber concrete are laid, and the anchoring steel bars are welded to the original steel bars; a formwork is mounted, the super-toughening fiber concrete is poured, andafter completion, a vibration platform is adopted for vibration compaction; and the poured super-toughening fiber concrete is cured, after the mechanical index of the concrete meets the design requirement, the formwork is removed, and whole construction is completed. Owing to the fact that the post-earthquake bridge pier is reinforced through the super-toughening fiber concrete, the method has thecharacteristics of being small in thickness of the reinforced structure, large in rigidity, high in toughness, good in interlayer cohesiveness, good in durability and good in fatigue resistance.

The invention discloses a steel-Concrete composite bridge structure and composite bridge deck. This steel-concrete composite bridge structure comprises a composite bridge deck and a supporting beam structure supporting the connecting bridge deck. The composite bridge deck comprises a corrugated steel top plate, a reinforcing bar structure arranged on the upper part of the corrugated steel top plate and a concrete structure poured on the corrugated steel top plate and the reinforcing bar structure and connected with the corrugated steel top plate through a connecting piece. The concrete composite bridge deck comprises a corrugated steel top plate, a reinforcing bar structure arranged on the corrugated steel top plate and the corrugated steel top plate. limit bending resistance is obviouslyimproved, the cost is reduced and the dead weight is reduced at the same time.

The invention relates to preparation methods and applications of a chiral spirophosphine-nitrogen-phosphine tridentate ligand SpiroPNP and an iridium catalyst Ir-SpiroPNP thereof. The chiral spirophosphine-nitrogen-phosphine tridentate ligand is a compound represented by a formula I, or a racemate or an optical isomer thereof, or a catalytically acceptable salt thereof, and is mainly structurallycharacterized by having a chiral spiro indane skeleton and a phosphine ligand with a large steric hindrance substituent. The chiral spirophosphine-nitrogen-phosphine tridentate ligand can be synthesized by taking a 7-diaryl / alkylphosphino-7'-amino-1,1'-spiro indane compound with a spiro skeleton as a chiral starting raw material. The iridium catalyst of the chiral spirophosphine-nitrogen-phosphinetridentate ligand is a compound represented by a formula II which is described in the specification, or a raceme or an optical isomer, or a catalytically acceptable salt thereof, can be used for catalyzing asymmetric catalytic hydrogenation reaction of carbonyl compounds, particularly shows high yield (greater than 99%) and enantioselectivity (as high as 99.8% ee) in asymmetric hydrogenation reaction of simple dialkyl ketone, and has practical value.

A new method for preparing boron nitride nanotubes involves inorganic nanomaterials. Boron oxide, boric acid and other boron-containing and non-toxic boron compounds are used as raw materials, first ball milled for a certain period of time, then heated to above 800°C under flowing ammonia or nitrogen, and kept for more than 0.5h. After cooling, take it out, wash the sample with dilute hydrochloric acid, distilled water and ethanol, and then dry it to obtain a white powder that is boron nitride nanotube. This method has simple process, mild conditions and easy mass production. The yield reaches more than 80%. The prepared boron nitride nanotubes are semiconductors, and can be used in nanoelectronic devices, nanostructure ceramic materials, hydrogen storage and coating layers for preventing oxidation, propellant additives and composite flame retardancy, and have good application prospects.

The invention discloses a super hydrophobic polytetrafluoroethylene hollow fiber membrane preparation method. The method comprises the steps of mixing polytetrafluoroethylene dispersion resin powder with an extruding-aid agent, pressing a blank, extruding the blank into a polytetrafluoroethylene hollow tube through an extruder, then processing modification to the polytetrafluoroethylene hollow tube through silica sol, and then performing vertical stretching, sintering and heat setting in a baking oven, finally performing penetration processing by using perfluorosilane to obtain the super hydrophobic polytetrafluoroethylene hollow fiber membrane. The processed super hydrophobic polytetrafluoroethylene hollow fiber membrane has an average aperture on external layer of between 0.10-1.0 micrometer and an average aperture on internal layer of between 5.0-20 micrometer, and a surface water contact angle of 152-160 degree. The membrane is mainly used in membrane distillation and separation process, and can be used for seawater desalination, industrial waste water processing and in foodstuff and biological product cryoconcentration.

The invention belongs to the technical field of computer application and virtual reality, and particularly relates to a method for displaying a dynamic motion, in the air, of a virtual refueling hose. Display objects include a refueling hose short cabin (called a short cabin for short), a short cabin datum origin (called an origin for short), a refueling hose and a conical refueling nozzle (called a refueling nozzle for short); the refueling hose consists of N sections of pipe bodies; and the front end of the first section of the pipe body is connected with the origin, and the back end of the first section of the pipe body is connected with the front end of the next section of the pipe body, until the back end of the final section of the pipe body is connected with the refueling nozzle. The method realizes visual simulation of the refueling hose, and has a great practical value for researching and analyzing correctness of motion simulation of a soft object, displaying a spatial motion law of the soft object, assessing a simulation algorithm and demonstrating influence of airflow on motion processes and tracks of the refueling pipe and the refueling nozzle in a soft type refueling process; a new way is opened up for researching and analyzing a refueling and receiving connection technology; and the technology also can be applied to virtual visual display and motion research of a soft tubular or similar soft object (such as a cable-stayed bridge).