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36results about How to "Precise construction" patented technology

A masonry structure using polyethylene film to assist coke oven and its construction method

The invention discloses a masonry structure and a construction method thereof for assisting a coke oven with a polyethylene film, comprising a longitudinal refractory brick wall and a transverse refractory brick wall, both of which are formed by refractory brick masonry, a coke oven combustion chamber is provided with a plurality of transverse refractory brick walls to divide the coke oven combustion chamber into a plurality of combustion chamber units, the combustion chamber is provided with a plurality of polyethylene film layers from bottom to top, the two sides of the polyethylene film layer in the length direction are clamped in the longitudinal refractory brick wall, the two ends of the polyethylene film layer in the width direction are clamped in the transverse refractory brick wall, and the polyethylene film layer is covered on the transverse refractory brick wall that divides the combustion chamber. The invention can realize rapid garbage cleaning and film combustion and decomposition, thereby achieving the purpose of environmental protection, high efficiency and precise construction, and improving construction efficiency and construction quality.
Owner:MCC TIANGONG GROUP

Construction process for stabilizing foundation pit and slope support soil body

The invention discloses a construction process for stabilizing foundation pit and slope support soil, and particularly relates to the technical field of slope support construction, which comprises the following specific steps: S1, precise checking of a prefabricated aluminum mold, S2, soil trimming and checking, S3, installation of an adjustable screw rod, S4, detection of the installed aluminum mold, S5, bottom and edge plugging of the aluminum mold, S6, grouting: preparing mortar slurry according to a mortar matching mass ratio, and S5, grouting. S7, removing the mold; and S8, maintaining. According to the method, the standard size and the splicing mode of the aluminum mold are combined, the specific size of the aluminum mold is designed, the number of the needed aluminum mold is determined, it is ensured that the number is sufficient and not excessive, so that cost is optimized, after prefabrication of the aluminum mold is completed, traces and uneven parts left by mechanical finishing are eliminated, operation needs to be conducted strictly according to marking lines during manual finishing, and the production efficiency is improved. And it is ensured that the surface of the trimmed soil body is flat and smooth and basically located on the same plane, accurate and stable construction can be achieved according to specified requirements, and the construction quality is poor.
Owner:CHINA SHANXI SIJIAN GRP

Construction method of deep water cofferdam with small clearance

PendingCN122707549ASolve the problem of low docking efficiencysimple process
This application provides a construction method for a deep-water cofferdam with limited clearance, comprising the following steps: dividing the steel cofferdam into several segments and transporting them one by one to the target location using a floating method; injecting water into each segment of the steel cofferdam and flipping it to a vertical position; moving each segment of the steel cofferdam to the designed position of the pier, connecting the segments to form a whole, and completing the enclosure of the cofferdam; continuing to inject water into the enclosed steel cofferdam to allow it to sink and anchor to the bed. This application eliminates the need for large lifting equipment, does not occupy the clearance under the bridge, effectively avoids the risk of collision with existing main beams, and significantly reduces on-site work, improving the safety, efficiency, and economy of cofferdam construction in deep-water environments with limited clearance. It is suitable for bridge foundation engineering in complex conditions such as deep water, limited clearance, and low bed depth.
Owner:ROAD & BRIDGE INT CO LTD +1

Correction drilling television video orientation device and its use method

The present invention discloses a device for correcting drilling television video orientation. It comprises a coaxial double-wire wheel, an orientation line, an orientation device bracket, a handle and an orientation lug; one end of the orientation line is wound around the coaxial double-wire wheel, and the other end is connected to the orientation lug; the coaxial double-wire wheel is located on the orientation device bracket; the handle is connected to the coaxial double-wire wheel. The present invention overcomes the disadvantage that the direction error calibrated by the compass in the prior art is large, which has seriously affected the quality of geological survey results; it has the advantages of economically, accurately and efficiently correcting drilling television video. The present invention also discloses a method for using the device for correcting drilling television video orientation.
Owner:CHANGJIANG GEOTECHNICAL ENG CORP

Pipeline fixing device

ActiveCN222308576Uprecise constructioneasy to operateWork holdersClassical mechanicsPipe
The utility model relates to a pipeline fixing device which comprises a base, the base is round, a through hole is formed in the center of the base, a pipeline is vertically arranged in the through hole, a plurality of inserting grooves are formed in the inner side wall of the through hole, a clamping block is arranged in each inserting groove, an adjusting disc is further movably installed in the base and located below the clamping blocks, and a sliding groove is formed in the top face of an adjusting plate. Sliding blocks are arranged at the bottoms of the clamping blocks and inserted into the sliding grooves, the multiple sliding grooves are arranged in a circumferential array mode with the base as the center and abut against the outer wall of the pipeline, and a transmission assembly is further arranged at the bottom of the adjusting plate, extends to the exterior of the base and is connected with an adjusting handle. A three-jaw chuck structure is adopted to replace an existing bolt connection mode for fixing, the automatic centering effect is achieved, pipeline construction is more accurate, only an adjusting handle needs to be twisted in the actual operation process, operation steps are simplified, construction efficiency is improved, the size of a clamping space can be changed through forward and reverse adjustment, and the clamping effect is good. And pipelines with different specifications and sizes can be mounted.
Owner:宜昌华鼎建筑工程有限公司

Space measurement processing method of excavator and electronic equipment

The invention provides a space measurement processing method of an excavator and electronic equipment. The method comprises the steps that target excavation coordinates of a bucket tooth tip are determined according to initial state information of the excavator at an initial positioning point, attribute information of the excavator and excavation information input by a user; acquiring actual state information of the excavator after the excavator performs excavation operation at the initial positioning point, and determining actual excavation coordinates of the bucket tooth tip according to the actual state information and the attribute information; according to the target excavation coordinates and the actual excavation coordinates, excavation deviation information is determined, the excavator is controlled to continue to execute excavation operation according to the excavation deviation information, and new actual state information of the excavator after the excavation operation is executed is iteratively obtained; and according to the new actual state information and the attribute information, determining a new actual excavation coordinate of the bucket tooth tip until the new actual excavation coordinate is consistent with the target excavation coordinate. Accurate construction is achieved, and working efficiency is improved.
Owner:INNER MONGOLIA ZHONGHUI TAIHE ENG CO LTD

Milling machine for repairing inspection well and breaking concrete

The invention discloses a milling machine for breaking concrete in inspection well maintenance, and particularly relates to the field of inspection well maintenance, the milling machine comprises a concrete layer, the outer surface of the concrete layer is provided with a well seat, and the top end of the inner wall of the well seat is provided with a centering tool; the loading machine is arranged at the top end of the concrete layer, a rack is installed on one side of the loading machine, an installation assembly is arranged between the loading machine and the rack, the rack is installed at one end of the loading machine through the installation assembly, a wall breaking frame is arranged at the bottom end of the rack, and a hydraulic assembly is arranged on the outer surface of the rack. The wall breaking frame is lifted through the hydraulic assembly, and a driving assembly is arranged at the top end of the wall breaking frame. According to the invention, the loading machine is modified, the hydraulic system of the loading machine is used for providing power, the cutting position is positioned through the centering tool, and the hydraulic motor drives the tool bit to accurately and efficiently plane and mill concrete around the inspection well. The concrete breaking efficiency is improved, construction is accurate, and dust and noise are reduced.
Owner:WUHAN FU RUILI AUTOMATION EQUIP CO LTD

Construction machine

A shovel (100) is provided with a traveling body (9), a turning body (10), and a reception unit (3). The turning body (10) is disposed on top of the traveling body (9), and turns about a turning axis (AX) with respect to the traveling body (9). The reception unit (3) receives, from a reference station (200), specification information for specifying the position of the turning body (10). The reception unit (3) is disposed between the turning axis (Ax) and the rear end (10b) of the turning body (10). The turning body (10) preferably includes a cabin (11). The reception unit (3) is preferably disposed in a rear portion of the cabin (11).
Owner:YANMAR HLDG CO LTD

Novel metro side door

ActiveCN224664497Uavoid self-closingReduce the frequency of opening
The novel subway side door comprises a side door body, a handrail arranged on the left and right sides of the side door body, an electric lock body, an electric lock armature and a card reader, the top of the handrail and the top of the side door body are provided with handrails, the center of the right end surface of the handrail on the left side is provided with a positioning groove, and the center of the left end surface of the handrail on the side door body is embedded with a positioning bead; when the side door body is closed, the ball of the positioning bead is locked in the positioning groove to position the side door body; the control line of the card reader and the electric lock body is connected through a connector or a wiring terminal; and the right side frame of the side door body is hinged to the left side column of the handrail on the right side through a plurality of positioning hinges. The novel subway side door can ensure the accurate positioning between the electric lock body and the electric lock armature when the subway side door is closed, prolong the service life of the electric lock, facilitate the disassembly, maintenance and repair of the card reader, and is low in equipment cost.
Owner:HENAN BRILLIANT URBAN RAIL TECH CO LTD

Carbon black supported iron-manganese composite oxide cluster catalyst, and preparation method and application thereof

PendingCN122257022AGaudi efficiencyImprove adsorption capacity
The application discloses a kind of carbon black supported iron manganese composite oxide cluster catalyst's Joule heat preparation method and its application in electrocatalytic nitrate reduction preparation ammonia, belong to electrocatalytic ammonia preparation technical field.The catalyst Ketjenblack EC-600JD carbon black is used as carbon carrier, iron manganese composite oxide cluster is uniformly dispersed on the surface of carbon carrier, and the carbon carrier is worm-like mesoporous structure, with high specific surface area and high defect concentration.The application uses sodium citrate as complexing agent, acetylacetone iron and manganese acetate as metal precursor, after complexing, loading, gelation, freeze drying, the target catalyst is prepared by Joule heat instantaneous heat treatment under nitrogen atmosphere;The preparation process has high heat conversion efficiency, low energy consumption, can realize atomic dispersion of iron manganese composite oxide cluster, effectively improves the exposure degree of catalytic active site.The catalyst shows high catalytic activity, high selectivity and excellent stability in electrocatalytic nitrate reduction preparation ammonia reaction, and the ammonia preparation faraday efficiency can reach more than 85%, and the preparation process does not need noble metal and toxic reagent, and the process is green and efficient, easy to scale production, can efficiently convert nitrate wastewater into ammonia, with environmental governance and nitrogen resource recycling value.
Owner:GUILIN UNIV OF ELECTRONIC TECH +1

Electrolytic steel plate design and construction method based on BIM technology

The invention relates to the technical field of construction of electrolytic steel plates, in particular to an electrolytic steel plate design and construction method based on a BIM technology. By means of the construction method, accurate construction can be achieved, the positions of the electrolytic steel plates, the reinforcing plates, the vertical keels and the transverse keels can be accurately in butt joint, the equipment gaps between the electrolytic steel plates and all the equipment modules can be controlled within the construction requirement range, and reworking is avoided; through modular design, the drawing design and owner communication efficiency is improved; meanwhile, the module can be used in other projects, and the overall working efficiency is improved.
Owner:CHINA MCC22 GROUP CORP LTD +1

Pile foundation reinforcement cage guiding and positioning device

The utility model provides a guiding and positioning device for a pile foundation reinforcement cage, and belongs to the technical field of bridge construction. The problem that in the construction process of an existing pile foundation reinforcement cage, the reinforcement cage is difficult to position and install is solved. The device comprises a square frame and a guiding round steel cylinder, the guiding round steel cylinder is arranged in the square frame, four connecting plates are horizontally arranged on the edge of the top of the guiding round steel cylinder at equal intervals in the circumferential direction, and one end of each connecting plate is connected with the edge of the top of the guiding round steel cylinder; the four connecting plates are in lap joint with the tops of the four edges of the square frame correspondingly, reinforcement cage fixing steel pipes are horizontally arranged at the four corners of the top of the square frame correspondingly, and the reinforcement cage fixing steel pipes stretch out and draw back towards the center direction of the square frame. The device is mainly used for bridge pile foundation reinforcement cage construction.
Owner:中庆建设有限责任公司

Sloping roof concrete semi-automatic smoothing machine device

ActiveCN224679012UEnsure construction safetyEnsure construction stabilityGear wheelArchitectural engineering
The utility model discloses a kind of slope roof concrete semi-automatic shakeout machine devices, relate to concrete construction technical field.The utility model includes main rod, and the side of main rod is provided with shakeout component, and the bottom of main rod is provided with telescopic component, and the bottom of telescopic component is provided with shock plate, and the top of shock plate is provided with vibration machine.The utility model uses, by using G character clip, channel steel is fixed on main girder reinforcement, and builds stable operation frame for shakeout operation, guarantees construction safety and stability;Start vibration machine to make shock plate vibration reinforcement cement surface, simultaneously, motor drives gear to move, and then drive main rod and shock plate displacement, realize to different position cement surface automatic, efficient shock, this collaborative operation mode improves construction efficiency, guarantees cement surface shakeout quality, make slope roof construction more accurate, reliable.
Owner:SHANXI WUJIAN GRP CO LTD

A prefabricated foundation pit steel support structure and construction method thereof

The present invention belongs to the field of underground engineering technology, and specifically relates to an assembled foundation pit steel support structure and a construction method thereof, including a crown beam, a prefabricated steel support, a temporary locator, and a vertical construction error adjuster for adjusting the vertical construction error of the prefabricated steel support; the prefabricated steel support is composed of two end segments and a plurality of intermediate segments arranged between the two end segments, which are sequentially spliced ​​through connecting joints; the end of the end segment is cast with end concrete, and the end of the end segment and the end concrete are partially extended into the crown beam, and the end concrete and the crown beam are integrally cast and formed; one end of the vertical construction error adjuster is connected to the enclosure structure, and the other end is connected to the end segment through a temporary locator. The present invention can not only realize the rigid connection between the prefabricated steel support segments and between the prefabricated steel support and the crown beam, thereby ensuring the integrity and safety of the foundation pit, but also accurately adjust the vertical construction error through the vertical construction error adjuster to achieve precise construction.
Owner:CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP CO LTD

Novel reinforcing mesh for reducing tunnel rockburst harm and initial support cracking

The invention discloses a novel reinforcing mesh for reducing tunnel rockburst harm and initial support cracking, which comprises transverse embossed wave-isolating reinforcing steel bars (11) and longitudinal embossed wave-isolating reinforcing steel bars (12) which are mutually woven, the upper and lower waveform interlacing parts of the transverse embossed wave-isolating reinforcing steel bars (11) and the longitudinal embossed wave-isolating reinforcing steel bars (12) are woven in a cross shape, and the interlacing parts (14) are fixedly connected; the transverse embossed wave-isolating reinforcing steel bars (11) and the longitudinal embossed wave-isolating reinforcing steel bars (12) are vertically arranged to form an embossed wave-isolating dense-grid fine reinforcing steel bar net (1) with one closed side, the reinforcing steel bar net is also provided with grids (1a) with the same size, and the outer end parts of the transverse embossed wave-isolating reinforcing steel bars (11) and the longitudinal embossed wave-isolating reinforcing steel bars (12) are respectively provided with a section of extending reinforcing steel bars (13) with reserved ends. The device has the advantages that energy generated by rockburst, earthquakes, deformation and the like can be effectively absorbed or buffered, and the safety of tunnel construction and operation is enhanced.
Owner:CHINA RAILWAY 18TH BUREAU GRP CO LTD +3

Electrochemical nanosensor for detecting intracellular lactate in tumor cells and preparation method and application thereof

The application belongs to the technical field of biological detection, and particularly relates to an electrochemical nanosensor for detecting intracellular lactic acid in tumor cells and a preparation method and application thereof. A carbon fiber nanoelectrode (CFNE) with a tip diameter of about 150 nm is prepared by using a flame etching technique, and platinum nanoparticles (Pt NPs) are modified on the surface of the carbon fiber nanoelectrode to enhance the electrocatalytic activity of the electrode. Lactate dehydrogenase (LDH) is covalently cross-linked and fixed by using polyethyleneimine to construct an enzyme nanoelectrode (LDH / Pt / CFNE) for electrochemical detection of intracellular lactic acid in single cells. The sensing electrode has the characteristics of high sensitivity, good selectivity and excellent stability, realizes real-time and in-situ quantitative detection of intracellular lactic acid in single tumor cells, and is applied to tumor metabolism research, drug evaluation and mouse tumor model verification.
Owner:SHANDONG NORMAL UNIV +1

Arc-shaped inclined concrete structure wall construction structure and construction retest method

ActiveCN118422867Bprecise constructionGuaranteed accuracyArchitectural engineeringRebar
The application discloses an arc-shaped inclined concrete structure wall construction structure and a construction rechecking method, and relates to the construction field. The construction structure comprises a bottom plate for limiting a wall, a top plate, a stand, a wall inner wood mold and a wall outer wood mold, an arc-shaped measuring tool, a wall steel reinforcement cage, a screw rod, a reinforcing keel and an external support frame. The cross sections of the bottom plate and the top plate are both circular, and the sizes of the circles are different. The construction rechecking method comprises the following steps: bottom plate pouring; stand and top plate pouring; support frame erection; wall outer wood mold rechecking; wall inner wood mold rechecking; arc-shaped inclined concrete structure wall pouring; removing the wall inner wood mold and the wall outer wood mold; and rechecking the arc-shaped inclined concrete structure wall to determine whether the chord height of the wall is consistent with the theoretical chord height. According to the counting scheme, the wall wood mold can be measured twice before wall pouring, the construction accuracy of the wall is greatly improved, and the wall itself can be measured after wall pouring to check whether the wall construction is accurate.
Owner:SHAANXI CONSTR ENG GRP NO 7 BUILDING ENG

Underground drain pipe repairing and reinforcing device

The utility model relates to building construction technical field discloses underground drainage pipe repairs and reinforcing device, including support framework, the support framework outer wall is provided with elastic sealing layer, the elastic sealing layer outer wall is provided with carbon fiber grid layer, the support framework includes hydraulic cylinder, the hydraulic cylinder output fixedly connected with telescopic head, the hydraulic cylinder outer wall is equipped with the fixed ring, the telescopic head outside annular is provided with six arc units, the telescopic head is hinged with arc unit through a connecting rod, the fixed ring is hinged with arc unit through another connecting rod, two the connecting rod inside all are penetrated and are opened and are provided with the sliding slot, two the sliding slot inner wall sliding connection has the connecting shaft. In the utility model, the repair structure is sent into the underground pipeline by the traction device, the hydraulic drive support is expanded and is pasted with the pipe wall fast, cooperates high temperature steam foaming and ultraviolet light curing process, completes the repair in short time, improves the maintenance efficiency and reduces the comprehensive cost.
Owner:GUANGDONG ZHONGKAI CONSTR ENG CO LTD

Pore intelligent regulation weft-knitted fabric and preparation method thereof

The application discloses a kind of pore intelligent regulation weft knitted fabric, including face yarn and ground yarn, the face yarn with the ground yarn is interwoven by plating weft knitting process, forms fabric body, in the process front of fabric body, by the face yarn constitute several regular distribution pore regulation unit;The pore regulation unit is in dry state, present closed or shrinkage form;In hygroscopic state, the pore regulation unit expands, forms the air-permeable channel in the thickness direction of fabric body.The application utilizes the "moisture absorption axial elongation, radial shrinkage and twist to high humidity side" characteristics of face yarn in heat and humidity response yarn, and cooperates with the size stable support of ground yarn, gives the dynamic pore regulation ability of fabric body;When human perspires, face yarn absorbs moisture and elongates and twists, pore regulation unit actively expands, forms three-dimensional air-permeable channel, enhances heat dissipation and moisture removal;After drying, yarn restores, pore closes to reduce air convection to keep warm.
Owner:JIANGNAN UNIV

A built-in steel pipe positioning device for tunnel advanced horizontal jet grouting piles

ActiveCN114737998Bhigh strengthprecise constructionUnderground chambersTunnel lining
The present invention belongs to the technical field of tunnel reinforcement safety steel pipe positioning, and discloses a built-in steel pipe positioning device for tunnel advanced horizontal rotary jet piles to solve the positional offset problem of steel pipe construction in the prior art. The steel pipe positioning device includes a plurality of front support rods arranged at intervals in the small section of the steel pipe tip cone and a plurality of rear support rods arranged at intervals in the large section of the steel pipe tip cone, a support body is hinged between the front support rod and the rear support rod, one end of the rear support rod away from the support body is hinged to the side wall of the steel pipe tip cone, and one end of the front support rod away from the support body is provided with an elastic movable snap ring, and the elastic movable snap ring is provided with a tension mechanism that can be used for the elastic movable snap ring to be clamped in the groove of the large section of the steel pipe tip cone. The present invention positions and constrains the position of the steel pipe through the "umbrella beam" telescopic structure, thereby achieving the purpose of precise construction and improving the strength of the pile body. In addition, the device can be centrally manufactured by a factory, and the new steel pipe positioning fixing head is simple to weld and install on site, with low cost and high efficiency.
Owner:GANSU PROVINCE TRANSPORTATION PLANNING SURVEY & DESIGN INST

Intelligent medical equipment integration system and operation method

The invention provides an intelligent medical equipment integration system which comprises a three-dimensional digital design module which is based on a building information model technology, is used for constructing a three-dimensional model of a medical building, and accurately simulates the layout of equipment, reserved holes, pipeline interface positions and a relative spatial position relation. According to the invention, a three-dimensional digital design module, a construction auxiliary module, an integrated installation and debugging module, an intelligent diagnosis module, a cloud operation and maintenance module and a big data analysis module are utilized to realize full-process intelligent management of medical equipment from design, installation to operation and maintenance. By means of the building information model technology and the Internet of Things technology, efficient equipment layout, precise construction, automatic equipment calibration and debugging can be achieved, the operation state of the equipment can be monitored in real time, and predictive maintenance suggestions are provided through big data analysis. The equipment installation precision and efficiency are improved, manual intervention is reduced, the service life of the equipment is prolonged, and the management level of the medical equipment is remarkably improved.
Owner:ZHEJIANG SCI-TECH UNIV

Low-retraction anchoring device for prestressed reinforcement

The utility model relates to a prestressed anchoring device, in particular to a low-retraction anchoring device for prestressed reinforcements, which comprises a tensioning end anchor backing plate, an anchorage device, prestressed reinforcements, a sealing cylinder and an embedded pipe. A sleeve is also coaxially arranged in the sealing cylinder, the sleeve is fixed on the inner wall of the sealing cylinder, and the prestressed reinforcement penetrates through the sleeve; the sleeve is further provided with a slurry passing channel in the axial direction of the sleeve. According to the utility model, the sleeve is additionally arranged in the sealing cylinder, so that the centering of the prestressed reinforcement and the pre-embedded hole channel and the perpendicularity of the prestressed reinforcement and the end face of the tensioning end anchor bearing plate can be ensured, the anchorage device can be fully attached to the tensioning end anchor bearing plate by tensioning in place and screwing the anchorage device, and the accuracy of installation and positioning in construction is ensured; the retraction amount of the prestressed reinforcement after tensioning and anchoring is reduced; the prestressed reinforcement can be tensioned only by penetrating through the whole device without deliberately centering or correcting, so that the construction is convenient, and the construction time is short; the device is small in structural size, does not need to reserve a large-size tensioning notch, and is low in cost and easy to popularize and apply.
Owner:LIUZHOU OVM MASCH CO LTD

A newly filled soil foundation automatic plug-in system and method

This invention discloses an automated slab insertion system and method for recently reclaimed land foundations. The system includes an air-floating platform and an insertion mechanism. The insertion mechanism is slidably mounted on the air-floating platform, allowing it to move along a path formed by the platform to different positions on the shallow surface of the recently reclaimed land. The air-floating platform is used to fix the surface of the recently reclaimed land using negative pressure adsorption. The insertion mechanism is used to insert drainage boards into the soil layer of the recently reclaimed land. The air-floating platform includes at least one air chamber and at least two air cells, each independently separated and arranged along the horizontal direction of the platform. The air cells are located below the air-floating platform. When the air-floating platform is placed on the surface of the recently reclaimed land, the surface of the land is sealed within the air cells. This invention enables rapid construction of recently reclaimed land sites, improving construction efficiency compared to traditional methods.
Owner:广州港股份有限公司 +2

Complex crustal stress field tunnel model test loading device and test method

The invention belongs to the technical field of tunnel physical simulation test stress field equipment, and particularly discloses a complex crustal stress field tunnel model test loading device and a test method.The device comprises a loading assembly arranged on the surface of a supporting plate, and the loading assembly is attached to the surface of a to-be-loaded tunnel physical model; under the action of an external load, the construction of a non-uniform stress field on the surface of the to-be-tested tunnel physical model is realized through the adjustment of the loading assembly; the loading assembly comprises a loading frame, a compression column and a unit pressure head, a mounting hole is formed in the surface of the loading frame, the compression column is arranged in the mounting hole, the end, close to the to-be-tested tunnel physical model, of the compression column is connected with the unit pressure head, and the compression column is composed of elastic modulus micro unit bodies with different multiplying power; the elastic moduli with different multiplying powers are determined by obtaining a three-dimensional stress field required by a physical model test through a similarity theory according to a real stress field of a tunnel engineering prototype and then carrying out unit division and normalization on the three-dimensional stress field of the physical model, and the device can realize non-uniform loading of a complex ground stress field.
Owner:EAST CHINA JIAOTONG UNIVERSITY +1

A kind of covalent organic framework film of staggered stacking and its preparation method and application

PendingCN122273333AApplies to selective transmissionHighly selective ion screeningRadioactive wasteMesitylene
This invention relates to a staggered covalent organic framework thin film, its preparation method, and its application, belonging to the field of thin film technology. The invention first dissolves an amine monomer in acetic acid solution to obtain an aqueous solution; then dissolves an aldehyde monomer in mesitylene to obtain an organic solution; finally, the aqueous and organic solutions are added to the aqueous and organic phase chambers of a diffusion cell, respectively, for interfacial polymerization. After the reaction, the membrane material is removed, washed, and dried to obtain the staggered covalent organic framework thin film. This film forms a staggered stacked structure and constructs sub-nanometer transport channels with pore sizes of approximately 0.5 nm to 0.7 nm. Through a synergistic mechanism of Donnan repulsion and hydrogen bonding interactions, it maintains structural stability under extreme environments of high acidity, strong corrosion, and high radiation, achieving highly efficient selective permeation of protons and efficient retention of metal ions in high-level radioactive waste liquids.
Owner:SUZHOU UNIV

A fastener system installation structure and construction process

The present invention provides a fastener system installation structure and construction process, wherein the fastener includes an elastic layer and at least one layer of iron pad, wherein the elastic layer includes a bottom elastic pad, wherein the bottom elastic pad is arranged below the iron pad, wherein a coupling pad is also arranged below the bottom elastic pad, wherein a protective plate is arranged below the coupling pad, wherein the protective plate is arranged as a metal or non-metal plate having a harder surface than the coupling pad and having a smooth surface. The provision of the protective plate allows the concrete table surface to have a better flatness after pouring construction, which is beneficial to improving the stability and smoothness of the track. The connection relationship of each aperture is set as follows: protective plate aperture > nylon sleeve outer diameter > coupling pad aperture > nylon sleeve inner diameter; without consuming additional anchor bolt length and affecting the full play of the fastener height adjustment function, rapid and accurate construction of on-site tracks is achieved, and no secondary adjustment is required after pouring, which greatly saves the construction period.
Owner:LUOYANG SUNRUI RUBBER & PLASTIC SCIENCE & TECHNOLOGY CO LTD

High-temperature-resistant single-component silicone adhesive and preparation method thereof

The invention discloses a high-temperature-resistant single-component silicone adhesive and a preparation method thereof, and belongs to the technical field of adhesives, the silicone adhesive is composed of polydimethylsiloxane, organic silicon resin, a filler, a catalyst and an additive, the silicone adhesive is prepared through a specific process, and the mechanical property, thermal stability and weather resistance of the silicone adhesive in a high-temperature environment are ensured. Wherein the modified organic silicon resin is used as a key component and is synthesized through a complex chemical process, so that the adhesive property and the temperature resistance of the adhesive are enhanced. Compared with the prior art, the silicone adhesive disclosed by the invention has higher tensile strength, bonding strength and durability in a severe environment, and meets the requirements on high-performance adhesives in industrial application.
Owner:FOSHAN KELINGSI TECH CO LTD

Vibrating structure for concrete pouring operation of squat silo top plate and construction method

ActiveCN119434649Afull vibrationprecise constructionBuilding material handlingGear wheelArchitectural engineering
A shaft body is connected with a center shaft through a bearing, a cross rod support is arranged at the top of the center shaft, an annular sliding rail and a sliding block are arranged on the outer edge of a pitched roof of the top of the squat silo, an n-shaped support is arranged at the top of the sliding block, and large inclined rods are arranged at the tops of the cross rod support and the n-shaped support. Racks are arranged at the top of the large inclined rod, a movable support is arranged between the racks, a first gear with a motor is arranged on a transverse pipe of the movable support, the first gear with the motor is meshed with the racks, and a vibrating rod is arranged on the movable support. The invention further discloses a vibrating construction method for concrete pouring operation of the squat silo top plate. The vibrating construction method comprises the steps that 1, the large inclined rod does circular motion around the center shaft; 2, concrete is poured from the outer ring of the silo top to the inner ring of the silo top; 3, adjusting the length of a telescopic rod of the oil cylinder, and inserting the vibrating rod into concrete; and 4, concrete vibration and surface finishing of the slope surface are completed. The slope concrete vibrating device achieves the purpose that slope concrete can be fully vibrated, and can be widely applied to public building construction.
Owner:CHINA FIRST METALLURGICAL GROUP