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455results about How to "To achieve reinforcement" patented technology

Frame beam column fire-resistant node with catenary effect and construction method thereof

InactiveCN101845854ARelieve thermal expansion stressReduce local bucklingBuilding material handlingFire proofingSteel platesEngineering
The invention relates to a frame beam column fire-resistant node which is formed by increasing a trapezoidal connecting key at the end part of a steel beam, carrying out high-strength bolt anchoring on an upper flange at the beam end and simultaneously carrying out limited anchoring on a lower flange at the beam end, wherein the lower flange at the beam end has the limited telescopic capacity under the environment of a fire disaster. The implementation of the frame beam column fire-resistant node is as follows: cutting the steel beam with the flanges and a web plate and the trapezoidal connecting key, and then respectively assembling a column, the steel beam, the trapezoidal connecting key, a stiffening plate, an end plate and a steel plate through high-strength bolts, ordinary bolts and welding seams. The frame beam column fire-resistant node is applicable to the industry with higher requirements on the fire-resistant performance and the anti-collapse capacity of the structure and a civil steel frame structure. The frame beam column fire-resistant node has the advantages of simple structure, convenient construction and low cost of required materials, and can avoid the local buckling of the beam under the high-temperature environment, form the catenary effect and have the good fire-resistant performance and the anti-collapse capacity.
Owner:BEIJING UNIV OF TECH

Android application reinforcing method baed on C source code mixing

The invention discloses an Android application reinforcing method based on C source code mixing. The method comprises writing program key codes by using C programming languages and mixing C source codes. The reinforcement of Android application is achieved by mixing the C source codes in the Android application program, and the Android application program codes are protected. The Android application reinforcing method based on C source code mixing specifically includes the steps of writing the key part of the program by using C programming languages, writing programs into .so dynamic-link library file, invoking the dynamic-link library by using JNI technology in Java language, and then mixing the C source codes, so as to achieve the reinforcement of Android application. According to the Android application reinforcing method based on C source code mixing, important codes are saved in the C dynamic-link library by adopting NDK programming, and then the C source codes are mixed, the software protection is improved. At the same time, the important codes are written in a so library, the reusability of the codes are increased, ready-made so library can be directly introduced into other applications, so as to eliminate the troubles of secondary development.
Owner:北京鼎源科技有限公司

Novel electro-catalytic composite membrane material and preparation method thereof

The invention relates to a novel electro-catalytic composite membrane material and a preparation method thereof. The novel electro-catalytic composite membrane material is characterized in that the material can couple electro-catalytic technology and membrane separation technology. The preparation method comprises the following steps: taking a microporous separation membrane with electric conductivity, namely a carbon membrane, as a substrate, adopting a sol-gel method, mixing a metallic compound, water, a solvent, a catalyst, other additives and the like to be configured into a precursor solution, and obtaining an electro-catalytic composite membrane by sol ageing, film coating, drying and heat treatment; and preparing the composite membrane with superior performances by pretreating a substrate and controlling the mixture ratio of raw materials, the soakage time, the pulling speed, the sintering temperature and the like. The novel electro-catalytic composite membrane material takes the electro-catalytic composite membrane as an anode and a metallic material as a cathode to treat wastewater and realizes the reinforcement of the membrane separation process and the self-cleaning function under the action of a low-voltage electric field. The electro-catalytic membrane material has the advantages of low energy consumption, high separation efficiency, strong antifouling property and the like, and can be widely used for treating and recycling heavily polluted wastewater such as oily wastewater, dye wastewater, paper-making wastewater and the like. The preparation method has the advantages of simple preparation process, cheap equipment, easily-obtained raw materials, convenient operation and suitability for industrialized implementation.
Owner:DALIAN HUAXINYUAN TECHNOLOGY DEVELOPMENT LIMITED COMPANY

Nano-composite powder core wire

InactiveCN102994936AImprove anti-corrosion, anti-skid and anti-wear performanceExtended service lifeMolten spray coatingMischmetalGranularity
The invention discloses a nano-composite powder core wire. The key points of the technical scheme are that the nano-composite powder core wire consists of a nanometer composite powder core and an outer skin, wherein the nanometer composite powder core accounts for 25-40 percent of the mass of the nano-composite powder core wire; the outer skin is an aluminum strip of which the purity is more than 99.9 percent; the powder core is formed by compounding the following nanometer materials in percentage by weight: 5-24.3 percent of ultrafine aluminum powder of which the granularity is less than 1,000nm, 14.4-18 percent of nanometer titanium dioxide of which the granularity is less than 100nm, 36-45 percent of nanometer alumina powder of which the granularity is less than 100nm, 25-31 percent of ultrafine chromic oxide of which the granularity is less than 100nm and 0.3-1 percent of mischmetal. By the nano-composite powder core wire for coastal equipment with long-acting property, corrosion resistance, skid resistance and abrasion resistance, the coating is prepared by electric arc spraying equipment, so that the nano-composite powder core wire is suitable for coastal areas or offshore equipment, and is suitable for corrosion resistance, skid resistance and abrasion resistance to various steel structures under an atmosphere condition.
Owner:新乡市布瑞林特机械再制造有限责任公司

Grouting reinforcement and rectification method suitable for high-rise building structure

The invention provides a grouting reinforcement and rectification method suitable for a high-rise building structure. The method comprises the steps from S10 to S30, wherein in the step S10, grouting filling reinforcement is conducted on an original cushion layer under an original concrete valve plate, and the original cushion layer and grout are solidified to form a cushion layer reinforcement and strengthening layer; in the step S20, after the cushion layer reinforcement and strengthening layer is formed, grouting filling reinforcement is carried out on an original foundation under the original cushion layer, and the original foundation and grout are solidified to form a foundation reinforcement platform; in the step S30, after the foundation reinforcement platform is formed, a plurality of pile foundation grouting holes are vertically formed in the lower surface of the foundation reinforcement platform at intervals, grout is injected into the pile foundation grouting holes to form an under-column pile foundation. The cushion layer reinforcement layer, the foundation reinforcement platform and the under column pile foundation form a three-dimensional supporting system in the mode that the layers are reinforced layer by layer from top to bottom; the purpose of building foundation reinforcement and lifting rectification integration is achieved, and the problems that a building is not uniform in settlement and a rectification foundation is lifted are successfully solved.
Owner:BEIJING HENGXIANG HONGYE FOUND REINFORCEMENT TECH CO LTD

Loess landslide control system based on ecological remediation

The invention discloses a loess landslide control system based on ecological remediation. After substep square cutting of a loess landslide mass, the side slope of the loess landslide mass is of a multistep structure, a square-cut side slope is formed, single-row slide-resistant piles are arranged on a slide-resistant section on the front portion of the landslide mass, a retaining wall is constructed at the front edge of the landslide mass, a drainage project is constructed on the slope face and periphery of the landslide mass, and a three-dimensional soil engineering grid grass planting protection slope is laid on the slope face of the square-cut side slope. Cutting, retaining, protection and drainage in landslide treatment are combined, the landslide slide force is reduced to the maximum extent, the landslide skid resisting force is increased to the maximum extent, the influence of rainfall on the slope is eliminated, a slope protection system with an ecological function is constructed through a three-dimensional soil engineering grid, the functions of self washout resistance, slide force resisting reinforcement, ecological restoration and the like of the landslide mass are improved, the overall stability of landslide is effectively improved, and therefore the aim of permanently controlling loess landslide is achieved.
Owner:NORTHWEST UNIV(CN)

High-performance environment-friendly single-component hydrophobic polyurethane grouting material and preparation method thereof

The invention relates to a high-performance environment-friendly single-component hydrophobic polyurethane grouting material. The high-performance environment-friendly single-component hydrophobic polyurethane grouting material comprises the following substances: 100 parts of a polyurethane prepolymer, 1-10 parts of diatomaceous earth powder, 5-25 parts of polyurethane plasticizer, 5-25 parts of environment-friendly plasticizer, 10-35 parts of an environment-friendly solvent, 2-10 parts of a foam stabilizer, 0.2-2 parts of a catalyst and 0-0.2 part of a storage stabilizer. During construction, the hydrophobic polyurethane grouting material is single liquid grouting, the grouting material is environmentally friendly and free of pollution and can permeate inside various leakage water channels by virtue of grouting pressure and low viscosity, is in contact with water in the leakage gaps to rapidly absorb moisture by virtue of a porous filler and rapidly react with water for foaming. The grouting material and water are rapidly reacted and cured, the more excellent mechanical properties of the grouting material is ensured and the grouting material is high in dimensional stability so that the acid, salt alkali salt corrosion resistance of a product and engineering durability are increased to an utmost extent.
Owner:JIANGSU SOBUTE NEW MATERIALS

Laser real-time dynamic cladding repair and stress control system and method of damaged gears

The invention discloses a laser real-time dynamic cladding repair and stress control system of damaged gears. The system comprises an optical-infrared coupled dynamic monitoring and measuring system, a laser cladding system, a laser impact system and a clamping table respectively connected with a center control system; the cladding of cladding materials is realized through the heat effect of cladding laser; and impact waves generated by impacting on laser radiated materials are acted on the material surface of a laser cladding layer to realize reinforcement of the laser cladding layer and to eliminate such defects as air holes and loose structures generated in the cladding layer in the laser cladding process. The repair method is suitable for such failure forms as gear fatigue cracks, pitting, gear breakage and gear surface wear, and quickly realizes the shape recovery of gears through laser cladding repair without wasting classing materials; and through laser impact stress control, the defects generated in the laser cladding process are eliminated, the mechanical performances of the repaired gears are guaranteed, subsequent complicated machining is not needed, the repair efficiency is improved, and the gear repair cost is reduced.
Owner:HUAIYIN INSTITUTE OF TECHNOLOGY

Environment-friendly acrylate grouting material as well as preparation method and application thereof

The invention provides an environment-friendly acrylate grouting material, as well as a preparation method and an application thereof. The material mainly comprises the following components in parts by weight: a main agent, namely 100 parts of methacrylic acid-beta-hydroxyethyl ester, a crosslinking agent which includes 5-30 parts of hydrophilic compound containing a diallyl ether functional group, 1-5 parts of initiator and 0.5-3 parts of accelerant, 0-20 parts of an adjuvant, and a solvent, namely 2-1,000 parts of water. The method comprises the following steps: firstly, mixing the main agent, the crosslinking agent, the accelerant, the adjuvant and a part of solvent evenly to form a solution A in use; then dissolving the initiator into a residual solvent to form a solution B; and finally mixing the solution A with the solution B evenly, and solidifying at room temperature. According to the grouting material disclosed by the invention, the technical problem that the existing organic grouting material cannot be grouted once after being mixed with an inorganic grouting material, and the technical problem that the existing grouting material has poor durability, low strength, poor water solubility, low water expansion rate and high toxicity are solved.
Owner:湖南博旺水电建设有限公司

Additive manufacturing forming inner hole surface polishing and strengthening integrated machining system and method

The invention discloses a workpiece inner hole surface polishing and strengthening integrated machining system and a method adopting additive manufacturing forming. The system comprises a workbench, an cavitation generation system, a liquid supply circulation system and a controller, the volume alternating mode is adopted to change the volume of liquid in an inner hole of the additive manufacturing forming workpiece to be changed by virtue of the rapid reciprocating motion of a piston, so that the pressure is changed, a hollow bubble group is formed at the inner part of the liquid and an innersurface of the inner hole, and the hollow bubble group is killed along with further compression, so that shock waves and high-speed water jet flows are generated in the liquid medium; a nano-colloidin the inner hole makes full contact with the inner surface of the hole, ultra-fine polishing of the inner surface of the hole is realized, the shock waves and the high-speed water jet flows on an inner wall of the hole, so that a certain amount of plastic deformation is generated on the inner wall of the inner hole, and the reinforcing of the inner surface of the inner hole is realized. The cavitation technology and the nano colloid polishing technology are organically combined, the fatigue life and the surface smoothness of the inner surface of the inner hole are remarkably prolonged, and the requirements on the ultra-smooth surface are reaches.
Owner:JIANGSU UNIV

Device and method for forming variable cross-section thin-wall conical carbon fiber perform

The invention discloses a device and a method for forming variable cross-section thin-wall conical carbon fiber perform and aims at solving the technical problem of a complex method for forming a variable cross-section thin-wall conical carbon fiber perform by using a current carbon fiber perform forming device. Due to the design of a winding die and design philosophies of paving along with the die, winding and shaping, locating a core die, sewing locally, weaving and reinforcing, the forming device is capable of low-cost continuous preparation of a carbon fiber reinforced composite conical variable cross-section thin-wall part perform body; the method is simple; according to the forming method, four processes of paving, winding, sewing and weaving the fiber are continuously performed on the same device, so that the forming difficulty of the variable cross-section thin-wall conical carbon fiber perform is prominently reduced; in the preparation process, process parameters with influence on reinforced body forming quality and the wall thickness of the perform can be controlled in real time. Compared with the background art, no special expensive equipment is needed in the method; the method is capable of forming freely according to the shape of the needed perform.
Owner:NORTHWESTERN POLYTECHNICAL UNIV

Optical tool regulator for excimer laser micromachining system

The invention relates to an optical tool regulator for an excimer laser micromachining system, which belongs to the technical field of micro-nanoscale science and is used for MEMS machining. In the optical tool regulator, a sliding seat (1) is arranged on an optical guide rail; a regulating seat (2), a supporting plate (3), a mirror bracket (4) and a tight positioner (5) are sequentially arranged on the sliding seat (1); the mirror bracket (4) is provided with an optical tool hole (22) capable of accommodating a circular optical element with heavy caliber; and a square optical element regulator (23) arranged in the optical tool hole (22) and a light-reflecting inclined frame seat (32) capable of converting light paths are arranged. The optical tool regulator can realize five-dimensional fine adjustment in the X direction, Y direction, Z direction, pitching direction and the direction of left and right rotation, and also can convert the light paths by 90 degrees and is provided with square optical elements. The tight positioner (5) is directly connected with the regulating seat (2), and coats the periphery of the mirror bracket (4), a plurality of screw holes are uniformly formed at the periphery of the lateral surface of the tight positioner, and the tight positioner butts against the mirror bracket (4) fixedly through bolts, so that the optical elements work reliably and stably for a long time.
Owner:BEIJING UNIV OF TECH

Gob-side entry retaining method for putting top waste rock down to achieve roadway side packing

The invention relates to a gob-side entry retaining method for putting top waste rock down to achieve roadway side packing. The method is mainly applied to the gob-side entry retaining technical field. In the advancing process of a working face, a top coal caving support is directly adopted to put waste rack above a goaf down, the waste rock is transported to the end of the working face and is simply crushed, transferred and transported back, the processed waste rock is stacked, the goaf on one side of a retained roadway is filled with the processed waste rock to form a waste rock wall serving as a roadway side support, and a rear top beam is arranged at the position, needing roadway side packing, of hydraulic supports of the working face, so that a waste rock back transportation device is conveniently installed and the waste rock is stacked to the enough height. Meanwhile, when the waste rock is stacked or after the waste rock is stacked, cemented filling materials are sprayed to the stacking position of the waste rock to achieve airtightness and reinforcement along the roadway side support of the gob-side entry retaining. The method is of great importance in ensuring gob-side entry retaining stability of the thick seam working face, especially the fully mechanized caving face, improving the resource recovery rate and simplifying the roadway side support process.
Owner:CHINA UNIV OF MINING & TECH (BEIJING)

Production process for spunlace composite high temperature-resisting and corrosion-resisting filtering material

The invention relates to a production process for a spunlace composite high temperature-resisting and corrosion-resisting filtering material and belongs to the technical field of a textile filtering material. The production process comprises the following steps that: taking polyphenylene sulfide fibers and fiberglass fabrics as raw materials; checking, weighing and charging the polyphenylene sulfide fibers; charging the polyphenylene sulfide fibers into a long curtain, a horizontal opener, a big-cabin cotton blending box and a refined opener successively; and then carding by using a carding machine I and a carding machine II in a layering mode; placing into a cross lapping machine I and a cross lapping machine II to lap; clamping the fiberglass fabrics between the raw materials delivered by the cross lapping machine I and the cross lapping machine II and performing superposition; and performing the processes of pre-wetting, hydroentangling, dehydrating, drying and taking-up. The production process for the spunlace composite high temperature-resisting and corrosion-resisting filtering material provided by the invention has the advantages of excellent mechanical performance, filtration performance, high temperature-resisting performance, and chemical corrosion-resisting performance and size stability.
Owner:ZHEJIANG BAOREN NONWOVEN CO LTD

Reinforcing method for winding thermal excitation embedded shape memory alloy wires on concrete column

The invention discloses a reinforcing method for winding thermal excitation embedded shape memory alloy wires on a concrete column, and belongs to the field of concrete structure reinforcing. According to the force-bearing requirement of a reinforcing member, the to-be-reinforced zone is determined, and a protection layer of the to-be-reinforced zone is wholly or partially chipped away; according to the force-bearing requirement of the reinforcing member, the winding range, interval and diameter of the thermal excitation embedded shape memory alloy wires are further determined, the size and position of positioning screws are determined; the shape memory alloy wires are positioned through the positioning screws and fixed through anchorage device finally; the shape memory alloy wires are heated to the reverse change finish temperature or above of the shape memory alloy wires so that the shape memory alloy wires can generate restoring force; and heating is stopped, after the shape memory alloy wires are naturally cooled, the protection layer is repaired with epoxy-cement mortar, and the surface of the repaired concrete column is coated with fireproof paint. The reinforcing material is buried in the protection layer, so that the corrosion resistance is good, no anchorage device is exposed, the reinforced structure is good in durability, finished product protection is easy, the structure is consistent with an original structure after being reinforced, and the appearance is not influenced.
Owner:DALIAN UNIV OF TECH

Deep mine hard rock roadway stress adsorption layer structured support method

The invention discloses a deep mine hard rock roadway stress adsorption layer structured support method. In the initial stage after a deep roadway is excavated, concrete is sprayed to form a concrete flexible support layer. 4.5 m-5.0 m blastholes are drilled in the two sides of the roadway and an arch top, the spaces in the range of 2 m-2.5 m of the bottoms of the blastholes are filled with explosive for conducting soft fragmentation explosion to construct an arch broken rock stress adsorption layer. Grouting conduit anchor rods are driven in through the blastholes, cement paste is poured into the grouting conduit anchor rods to reconstruct structure support bodies. Paste is poured into the blastholes so as to fix the grouting conduit anchor rods, so that a rockburst prevention support structure formed by the arch broken rock stress adsorption layer, the structure support bodies, an isolation rock body, the concrete flexible support layer and the grouting conduit anchor rods of the high-stress deep hard rock roadway in a cooperative mode is achieved. Through the stress adsorption layer formed by the support technology, high stress and gathering of stress energy of surrounding rock of the isolation rock body can be effectively reduced, rockburst is restrained, and tunneling safety and efficient construction of the deep hard rock rockburst type roadway can be well achieved.
Owner:CENT SOUTH UNIV +1
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