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159 results about "Cross river" patented technology

Secondary locking and temporary fixation structure for main pier of cross-river bridge and construction method

The invention relates to a secondary locking and temporary fixation structure for a main pier of a cross-river bridge. The secondary locking and temporary fixation structure mainly comprises steel pipe columns, steel pipe column connecting ends, anchor cables, deformed steel bars, brackets, temporary supports and an adjustable template supporting system. The steel pipe columns are arranged on a bearing platform and anchored to the steel pipe column connecting ends embedded in the bearing platform. The anchor cables and the deformed steel bars are arranged in the steel pipe columns, the lower ends of the anchor cables and the lower ends of the deformed steel bars are anchored to connecting end plates in the steel pipe column connecting ends, and the upper ends of the anchor cables and the upper ends of the deformed steel bars are anchored to a cast-in-place box beam bottom plate. The temporary supports are installed on the top of the pier, and the embedded deformed steel bars are arranged in the temporary supports. The brackets are arranged on corbels of the steel pipe columns and provided with a supporting seat, a bottom die is installed on the top face of the supporting seat, the installation angle of an integrated flank template is adjusted through adjustable stay bars, and the integrated flank template is fixedly connected with the bottom die. A core die is supported through an adjustable cross-shaped inner support. A secondary anchoring system is adopted in the structure, and the problem of uneven stress in the 0# block construction process is successfully solved. The invention further provides a construction method of the secondary locking and temporary fixation structure for the main pier of the cross-river bridge.
Owner:德达交通建设发展集团有限公司

Water quality in-situ purification method in river estuary

A water quality in-situ purification method in river estuary relates to a water quality purification method in river estuary, especially relates to river estuary of convergence of lakes and rivers. A deposition pond, a aeration oxidation zone, a facultative pond and a floating island biological purification zone are disposed along rivers flowing into the lake direction in turns in river estuary of the horn-mouth shape region where watercourse crossing rivers and lakes, the method is: a, upstream polluted river water flows into the deposition pond for sedimentation, anaerobic decomposition and plant absorption; b, deposited river water flows into the aeration oxidation zone in order for increasing oxygen content; c, then the river water flows from the aeration oxidation zone into the facultative pond for degradation; d, degraded river water flows into the floating island biological purification zone at last, then the polluted water flows into lake by purification treatment. The invention uses in-situ purification method to process river water, no occupation of watercourse side land, resolving problem of rare land resource in river estuary and difficult to build water quality purification establishment. Key point of the invention provided water quality purification is intensifying absorption of natural hydrophyte and metabolism of microorganism for degrading pollutant in water, the water quality purification effect is obvious and brings no secondary pollution.
Owner:云南省环境科学研究院(中国昆明高原湖泊国际研究中心)

Construction method for polyvinyl plastic pipeline long distance deep water crossing river

ActiveCN1587771AAvoid the adverse effects of constructionReliable guarantee of engineering qualityPipe laying and repairUnderwaterDeep water
The invention relates to long distance and deep water construction method of polythene plastic pipes. The method includes following steps: pipe position measuring and sampling, embeds wire protecting piles, forms construction control wire; the localization of constructing ship; groove digging; underwater monitoring and groove amendment; pipes connecting; arranges weight cement and floating ball on the pipe; the pipe arrives the position and is fixed; pipe detection and process underwater; groove filling; pipe pressure detecting; pipe rinsing and sterilization. The invention uses the beneficial character of the plastic pipe effectively, thus the quality of the project is more reliable.
Owner:上海水务建设工程有限公司

Construction method of curved-surface arc-shaped main towers of cross-river single-cable suspension bridge

A construction method of curved-surface arc-shaped main towers of a cross-river single-cable suspension bridge comprises steps as follows: the double-curved-surface arc-shaped towers are manufactured in a factory, and the steel towers are disassembled and transported to bridge sites after assembled and matched; the steel towers are lifted by a floating crane, the floating crane lifts the steel towers with double hooks, tower body postures are adjusted preliminarily, the steel towers are lifted to mounting positions slowly and pin-connected and fixed through matching parts arranged in section box openings of the steel towers, the steel towers are mounted, a transverse brace is arranged in every other one section of tower body during mounting, the steel towers are limited and prevented from inclining inwards, and folding of the steel towers is facilitated; measurement positioning is performed, finally, reflective sheets are measured by an instrument, and tops of the box openings are measured and adjusted; the steel towers are welded through hanging of assembly type hanging baskets after positioned. Accurate lifting of the main towers of the cross-river suspension bridge is realized, curved-surface arc-shaped structure profiles of the tower bodies meet the design requirement, overwater and high-altitude super-tonnage lifting is safe and reliable, and the cost is saved.
Owner:THE FIFTH ENG CO LTD OF CHINA TIESIJU CIVIL ENG GRP

Non-excavation directional drilling construction method for municipal pipeline

InactiveCN109027420AImprove laying directionAdd depthPipe laying and repairEngineeringStructural engineering
The invention discloses a non-excavation directional drilling construction method for a municipal pipeline. The non-excavation directional drilling construction method for the municipal pipeline is mainly suitable for carrying out laying construction when various pipelines cross rivers, roads, buildings and other obstacles and an open excavation manner cannot be applied; the laying pipe diameter is 50 to 600mm; and the laying distance is 50 to 200m. The construction process comprises the steps of preparing for construction; designing a trace; staking out in survey; constructing a working pit;positioning and debugging a directional drilling machine; preparing a slurry; drilling a guiding hole; chambering step by step; welding and reinforcing a pipeline, and pulling back the pipeline; constructing an inspection well; and backfilling a foundation pit. According to the construction method provided by the invention, without influencing the original physiognomy, road traffic, river running,and greening vegetation, the penetration problem caused by the existence of a complete building at the original design pipeline excavation section is quickly solved, so that the construction land isreduced, the construction period is shortened, the construction efficiency is improved, the personnel investment is reduced, the investment cost is saved, and the laying direction, the laying depth and the laying accuracy of the pipeline are improved.
Owner:CHINA HYDROPOWER ELEVENTH ENG BUREAU ZHENGZHOU CO LTD +1

Construction method for integral installation of river-crossing sinking pipe

The invention provides a construction method for integral installation of a river-crossing sinking pipe. The construction method includes the following steps that steel plate piles are driven into river bank pipe ditch positions of river banks on the two side to form a cofferdam; a back shovel is used for digging out river bank pipe ditches in the cofferdam; a dredger with a long arm back shovel is used for digging out a river channel pipe ditch; two cranes are used for lifting a sinking pipe pipeline, an excavator is used in cooperation for moving the sinking pipe pipeline into the river bank pipe ditches, and pipe pressing and backfilling are conducted after the sinking pipe pipeline is sunk and positioned; and integral installation of the river-crossing sinking pipe is achieved through the above steps. Due to the scheme that the cofferdam is arranged on the edges of the river banks through the steel plate piles, the back shovel is used for digging, and the scheme that the dredger with the long arm back shovel is used for digging the river channel pipe ditch located in the middle of a river channel is used in cooperation, compared with the prior art, the sinking pipe pipeline can be integrally constructed at a time, cofferdam connecting pipes do not need to be additionally arranged on the two banks of a river after the sinking pipe pipeline is installed, and the construction difficulty is lowered.
Owner:CHINA GEZHOUBA (GRP) FIRST ENG CO LTD

Shield tail sealing grease for high water pressure resistant shield and preparation method thereof

ActiveCN106906031AGuaranteed low temperature fluidityEnhanced pumpabilityLubricant compositionFiberLithium
The invention discloses a shield tail sealing grease for a high water pressure resistant shield and a preparation method thereof. The grease is composed of the following components in percentage by weight: 8-18% of base oil 150N, 10-30% of polyisobutene, 10-30% of lithium-based grease, 1-10% of organic bentonite, 2-6% of lignocellulose, 1-5% of mineral fiber, 20-40% of calcium carbonate, 5-10% of barium sulfate and 5-10% of talcum powder. The shield tail sealing grease for the high water pressure resistant shield provided by the invention can be resistant to the water pressure of 6MPa at the temperature of 25 DEG C in a laboratory, and still has good pumping performance, with a price that is only 60% of that of an imported product. In construction of an actual shielding site, the shield tail sealing grease can be resistant to the high water pressure of 0.45-0.65MPa, meanwhile is excellent in comprehensive performance, and meets requirements of shield tail sealing in construction of high water pressure shield tunnels cross rivers and seas.
Owner:CHINA RAILWAY FIFTH SURVEY & DESIGN INST GRP +1

Construction method for pipe retreating of cross-river pipe jacking pipeline in soft soil stratum

InactiveCN107504262ARealize large-distance pipe withdrawal projectStrong pullPipe laying and repairEmbankmentsHydraulic cylinderCounter-pull
The invention discloses a construction method for pipe retreating of a cross-river pipe jacking pipeline in a soft soil stratum. The method comprises the following steps that firstly, original equipment devices in a pipe retreating pipeline are dismounted and removed, a steel seal door, a reverse jacking hydraulic cylinder, a counter pull steel beam, a steel strand set and other pipe retreating equipment devices are installed, safety measures of the steel seal door, the reverse jacking hydraulic cylinder, the counter pull steel beam, the steel strand set and other pipe retreating equipment devices are checked, and pipe retreating construction is conducted after debugging. In the method, measures of arrangement of a dewatering well and a packing water stop ring are adopted for solving the problem of water stop, and for solving the problem of collapse risks existing after pipe retreating, the manner that pipe retreating and soil filling are conducted at the same time is adopted; and meanwhile, in the later stage of pipe retreating, injected soil slurry is switched into cement slurry, and a hole is strengthened. According to the disclosed technical scheme, the collapse problem is effectively solved, and meanwhile long-distance pipe retreating is achieved.
Owner:SHANGHAI ROAD & BRIDGE (GRP) CO LTD

Ethylene propylene diene porous elastic composite sealing gasket and manufacturing method thereof

The invention provides an ethylene propylene diene porous elastic composite sealing gasket and a manufacturing method thereof. The ethylene propylene diene porous elastic composite sealing gasket comprises a stripped sealing gasket main body on which pores are arranged and a water expansion strip embedded at the top end of the sealing gasket main body, wherein the water expansion strip comprises the following components according to the part by weight: 100 of neoprene rubber, 3-5 of vulcanizing activator, 2-4 of age inhibitor, 20-25 of white carbon black, 120-150 of water absorber and 5-6 of zinc oxide. The manufactured ethylene propylene diene porous elastic composite sealing gasket adopts raw materials having no poison, harm and pollution and having long service life of products. The service life predictive period is forcedly tested by the state-level detection department, and the service life of a tunnel assembled lining rubber sealing gasket can satisfy the requirement of over 100 years, thereby the invention can be widely applied to cross-river tunnels, magnetic suspension train tunnels and subways.
Owner:上海长宁橡胶制品厂有限公司

Construction vehicle for plate-type ballastless track plate

ActiveCN102899994ASafe, reliable, economical and reasonable constructionReasonable structureRailway track constructionHydraulic cylinderControl system
The invention provides a construction vehicle for a plate-type ballastless track plate. The construction vehicle comprises a frame, a travelling system, a steering system, a track plate transportation paving system, a concrete spouting system, a power device and a control system, wherein the track plate transportation paving system comprises transverse movable hydraulic cylinders, a lifting hydraulic cylinder, fixed pulleys which are arranged on the transverse movable hydraulic cylinders, a rope, a first hydraulic pressure station, a hoisting plate and a first support structure; the transverse movable hydraulic cylinders and the lifting hydraulic cylinder are fixed with the frame by the first support structure and are connected with the first hydraulic pressure station which is controlled by a control system; and the rope penetrates through the fixed pulleys, one end of the rope is connected with the lifting hydraulic cylinder, and the other end of the rope is connected with the hoisting plate. By the construction vehicle for the plate-type ballastless track plate, the problems of difficulty in the transportation and rough paving of track plates, the spouting construction of self-compacting concrete and the like in sites where cranes cannot be used without construction roads and cross-river bridges, and particularly in sections of single-line bridges are solved.
Owner:CHINA RAILWAY 19 BUREAU GRP CO LTD +1

Overhead line unmanned aerial vehicle electricity testing method and device

The invention discloses an overhead line unmanned aerial vehicle electricity testing method and device. In the prior art, due to the fact that a line crosses river, valley and other areas, an operatorcannot reach the areas, or due to the fact that the line erection height is increased, an effective electricity testing method does not exist. A purpose of the invention is to solve the problems in the prior art. The invention provides an overhead line unmanned aerial vehicle electricity testing method and device. The device mainly comprises an unmanned aerial vehicle 1, an unmanned aerial vehicle remote controller 2, a handheld app terminal 3, a PC system 4, an electroscope 5 and the like. The electricity testing method mainly realizes accurate control of the flight direction (nose positioning algorithm) and flight distance of the unmanned aerial vehicle and safe distance maintenance in the electricity testing process through automatic distance measurement and calculation, and realizes an electricity testing function. According to the invention, the structure and the function of the unmanned aerial vehicle electricity testing device are constructed, the unmanned aerial vehicle safetydistance maintaining technology is overcome, and one-key operation of electricity testing operation is achieved.
Owner:国网山西省电力公司超高压输电分公司 +1

Ultra-wide water area precision cross-river leveling device and method

The invention discloses an ultra-wide water area precision cross-river leveling device and method. The ultra-wide water area precision cross-river leveling device comprises a plurality of measuring devices arranged on both sides of a river. The measuring device comprises a coaxial surveyor's beacon support frame and a total station. The coaxial surveyor's beacon support frame comprises a top plateand a base. The top plate is provided with a first threaded hole, the base is provided with a second threaded hole, the threaded holes are opposite and a vernier gage rod passes through the first andsecond threaded holes and is used for measuring the device height and surveyor's beacon height. The top plate is provided with a surveyor's beacon lamp and a prism set. The total station is detachably mounted on the base through a locking component. The device has the characteristics of synchronous direct opposite observation and direct measurement of instrument height and surveyor's beacon height, significantly reduces adverse effects such as elevation measurement errors caused by atmospheric refraction, earth curvature, instrument height and surveyor's beacon height in the triangular elevation measurement, and greatly improves the precision and work efficiency.
Owner:CHINA RAILWAY MAJOR BRIDGE ENG GRP CO LTD

Non-navigable span pier collision avoidance monitoring system and real-time diagnosis method

ActiveCN106248335AAccurately determine the extent of damageAccurate recordShock testingData acquisitionMonitoring system
The invention discloses a non-navigable span pier collision avoidance monitoring system and a real-time diagnosis method. The system comprises sensors mounted on a bridge A, a bridge B and a bridge pier respectively, a data acquisition instrument and a data denoising instrument and the like. The monitoring system can realize online real-time monitoring of bridge pier ship collision, can directly and quickly carry out preliminary judgment on bridge damage degree in the first time of bridge pier ship collision, and can directly analyze impact force and important bridge pier structure reaction parameters and provide first-hand data support for bridge operation close, immediate maintenance decision, bridge pier component state assessment and damage identification; the monitoring system is reasonable in design principle, light in structure and high in impact force identification precision; the whole monitoring system is low in cost, and can be largely applied to the cross-sea and cross-river bridges without increasing engineering construction cost too much, thereby solving the problem of high cost of omnibearing collision avoidance monitoring; and the monitoring system is high in engineering applicability.
Owner:ZHEJIANG UNIV OF TECH

Tunnel structure for subway shield intervals and method for reinforcing strata

The invention discloses a tunnel structure for subway shield intervals and a method for reinforcing strata. The tunnel structure for allowing the subway shield intervals to cross rivers underneath comprises multiplayer linings and grouting pipes. Reinforcing layers are formed in the strata by the grouting pipes. The method for reinforcing the strata for allowing the subway shield intervals to laterally cross viaducts includes arranging the deep grouting pipes and the reinforcing layers. The tunnel structure for allowing the subway shield intervals to cross the rivers underneath comprises the multiplayer linings, the grouting pipes and the reinforcing layers. Structures for reinforcing the strata for allowing the subway shield intervals to laterally cross the viaducts comprise the deep grouting pipes and the reinforcing layers. The tunnel structure and the method have the advantages that the bearing capacity of the subway shield intervals can be improved, influence of underneath crossing tunnel construction on the existing rivers on the ground and the existing viaducts can be reduced, and accordingly the tunnel structure and the method have high popularization value.
Owner:SOUTHWEST JIAOTONG UNIV

Real-time prediction numerical method for general scour of river-crossing bridge

The invention relates to a real-time prediction numerical method for general scour of a river-crossing bridge, belonging to the technical field of computers. The invention especially aims at a dynamic relation between river bed scour and a flood process, adopts a real-time scour evolution simulation equation of the river bed of a bridge crossing river reach in a flood discharge process, considersthe characteristics of a compressed river reach, and realizes numerical simulation and real-time prediction of the state of scour at bridge opening through a computer. The invention can be used in the flood control safety management of highway bridges and railway bridges, realizes real-time mastery of the state of river bed scour during the flood process, and avoids disaster caused by the scour of a large bridge.
Owner:BEIJING JIAOTONG UNIV

Pipe-jacking cathode protection embedding device and embedding method thereof

The invention discloses a pipe-jacking cathode protection embedding method. The method is characterized by comprising the following steps of: reserving a hole in a protected pipeline; and jacking an anode block or a cable sleeve out of the protected pipeline by adopting a vertical pipe jacking method in the protected pipeline. By using the method, the problem that a metal pipeline cathode protection device is difficult to lay and replace when crossing rivers, lakes and seas in pipe-jacking construction are solved. The method is developed aiming at that the anode block and a connecting cable cannot be embedded when performing pipe-jacking on the metal pipeline, has the characteristics that the structure is simple, the method is convenient to construct, and the cost is low. A pipe-jacking metal pipeline can be maintained better, and the service life thereof can be prolonged.
Owner:SHANGHAI MUNICIPAL ENG DESIGN INST GRP

Cross-river tunnel engineering construction simulation system based on BIM

InactiveCN108268986AScientific Construction ManagementEffective Construction ManagementGeometric CADDesign optimisation/simulationProcess simulationSafety monitoring
The invention discloses a cross-river tunnel engineering construction dynamic simulation system based on BIM. The method comprises the following steps of using a BIM platform; carrying out integrationexploration; designing an accomplishment; dynamically collecting progress information in real time; safely monitoring data; using a parameterization modeling technology to realize integration image presenting and dynamic simulation; dynamically presenting a construction progress image and synchronously presenting a safe monitoring state; based on the above steps, tracking an engineering progressand a quality safety condition; and based on the engineering progress, analyzing the influence of underground construction to the safe monitoring state. In the invention, the construction progress canbe dynamically and visually presented, construction and quality safety monitoring images in any periods can be reflected, dynamic process simulation based on a timeline is realized, a change rule between the safety monitoring and the construction progress is compared and analyzed, and engineering safety and stable state determination is assisted to make.
Owner:SHANGHAI UNIV +2

Cross-river leveling measuring method

The invention discloses a cross-river leveling measuring method. The method comprises the following steps: setting up cross-river fields, and respectively setting up instrument sites and markers of cross-river benchmarks on both banks; providing an electronic total station on each instrument site of two banks, and providing a prism on the cross-river benchmark; observing the benchmarks on the samebank; observing the benchmarks on the opposite bank; exchanging the electronic total stations on two banks to observe; and after checking tolerance and eliminating observation values of the over-limit height difference, taking the median of the opposite observation height difference on two banks of two electronic total stations as a cross-river height difference measuring result. The invention relates to the field of controlling and measuring. The cross-river leveling measuring method saves cumbersome works of measuring high instrument and high target, avoids the measuring errors of high instrument and high target, improves the efficiency and the precision of the results of the cross- river leveling measuring, facilitates an operator to operate and the automation of the field measuring, and is beneficial to control the quality of the field observation.
Owner:CHINA MAJOR BRIDGE ENERGINEERING

Field self-charging image recognition infrared imager

The invention relates to a field self-charging image recognition infrared imager. A technical scheme used is as follows: the field self-charging image recognition infrared imager comprises an anti-corrosion shell, a ventilated window, a filter screen, a movable cover, a view finder, an infrared lens, a protective cover, a starting switch, a stopping switch, a movable fixture, a wiper, a sliding shaft, an image acquisition module, a sliding rail, a master control module, an image recognition module, a motor control, a video interface, a cable and a self-charging device. According to the field self-charging image recognition infrared imager provided by the invention, an infrared projector is placed in regions unattended at night or regions with difficult terrains, through infrared image acquisition, acquired images are sent to the image recognition module, target detection is executed through a SVM classifier, and after a human target is discovered, a wireless communication module transmits position information of the infrared imager to an information center; in order to guarantee long-term use of instruments in the field, a wind driven generator and a solar energy are used for hybrid power generation for providing sustainable green energy for the instruments. The field self-charging image recognition infrared imager is suitable for preventing illegalities, such as illegal immigration, poaching and unlawful felling, or distress of travel personnel caused by crossing rivers and hills at night, and so on.
Owner:河南英富迪光电科技有限公司

Long-term deformation monitoring method for operated cross-river subway tunnel

The invention discloses a long-term deformation monitoring method for an operated cross-river subway tunnel in a tunnel project. The method uses a manner combining cross-river leveling surveying and leveling surveying of a cross-river subway tunnel shield segment, leveling routes formed by using of deep pile points (elevation control points) at both ends of the cross-river tunnel shield segment are taken as starting testing points and cross-river leveling routes form a closed ring leveling route, wherein the cross-river leveling routes are formed by respective connecting of first order leveling from the deep pile points to leveling points of both banks of a river, the leveling surveying of the cross-river subway tunnel shield segment includes subsidence measurement of a river-crossing shield tunnel subway station and structural deformation measurement of the cross-river shield segment; the monitoring method for the cross-river subway tunnel is convenient, simple, and inexpensive, and can achieve high-precision measurement. The method combining the cross-river leveling surveying and the leveling surveying of the cross-river subway tunnel shield segment is used to form closed loop mutual verification, and the method can monitor the deformation of the subway tunnel for a long time.
Owner:ZHEJIANG UNIV CITY COLLEGE +1

Large-span disassembly method of transmission circuit over navigable water level

The invention provides a large-span disassembly method of a transmission circuit over a navigable water level, and relates to the large-span disassembly method of the transmission circuit. The previously constructed transmission circuits crossing rivers, lakes or straits have large difficulty for optimized transformation or disassembly reconstruction. The method comprises the following steps: (1) preparing construction and closing navigation; (2) disassembling accessories of conductors and shield wires of a crossing tower, and erecting a pulley; (3) releasing the conductors and shield wires of an anchor tower; (4) carrying out releasing and breaking operation of the conductors and shield wires of the crossing tower; (5) reclaiming used wires, and breaking the conductors and shield wires of the anchor tower and the crossing tower; and (6) detaching the crossing tower. By adopting the method, large-span disassembly construction with navigation requirement can be safe, convenient and quick, and an excellent method reference is provided to similar large-span transformation construction of transmission circuits.
Owner:浙江省送变电工程有限公司 +2

Method for reasonably earthing and setting cross river-sea shield tunnel

The embodiment of the invention provides a method for reasonably earthing and setting a cross river-sea shield tunnel. The method comprises the following steps: acquiring tunnel design and a construction parameter and determining physical and mechanical parameters of an earthing layer and a water layer on the tunnel; calculating a muddy water support pressure upper limit value capable of guaranteeing shield tunneling safety under different earthing thicknesses; calculating a muddy water support pressure lower limit value capable of guaranteeing shield tunneling safety under different earthingthicknesses; calculating a shield muddy water support pressure allowable difference value capable of guaranteeing tunneling safety under different earthing thicknesses; determining the maximal fluctuation range of shield muddy water support pressure in the tunneling process; enabling the maximal fluctuation range of the shield muddy water support pressure to be equal to the shield muddy water support pressure allowable difference value under a certain earthing thickness to acquire the minimal earthing thickness and considering safety coefficient to acquire earthing thickness. According to themethod, the rationality of the earthing thickness of the cross river-sea shield tunnel is guaranteed, and cleavage and instable failure of the tunneling face of the cross river-sea shield tunnel are avoided.
Owner:BEIJING JIAOTONG UNIV

Cast-in-place construction method for large-span diamond-shaped bent cap of high pier

According to the cast-in-place construction method for the large-span diamond-shaped bent cap of the high pier, cast-in-place construction of inclined legs and the bent cap is achieved through a two-part supporting system, in the first part, a combined supporting system is formed through 45a double-spliced I-shaped steel, a channel steel bracket and a slope bracket, and cast-in-place constructionof an inclined leg supporting bent cap structure is achieved; and in the second part, a fastener type steel pipe full framing is erected at the hollow structure on the tie beam which is poured and solidified, square timbers and formworks are laid, and cast-in-place construction of the cross beam is achieved. The construction method is a very simple, effective, safe, reliable, rapid and economicalconstruction scheme for viaducts and municipal bridges constructed under the complex conditions of high piers crossing rivers, valleys crossing, soft soil foundations crossing and the like. By the adoption of the construction technology, the defects that a traditional bracket is difficult to construct, long in construction period, high in cost, large in risk, multiple in potential safety hazard and the like are overcome.
Owner:CHINA RAILWAY NO 3 GRP CO LTD +1

Cross-river tunnel engineering construction quality safety traceability system based on BIM

InactiveCN108268985AScientific Construction ManagementEffective Construction ManagementDatabase management systemsResourcesMonitoring systemQuality safety
A building construction quality safety monitoring system based on BIM relates to the information management technology field. The system is used to increase production efficiency, save cost and shorten a construction period. The method is characterized by according to the structure characteristic of cross-river tunnel engineering, establishing the BIM model of the cross-river tunnel engineering; during a cross-river tunnel engineering construction process, when a quality safety problem is generated, marking a problem area in the BIM model by a supervisor, filling in or uploading a problem listin an on-line mode, and automatically pushing to correlation engineering personnel so that the correlation engineering personnel can check the problem area in the BIM model, take pictures on site andreply and solve the problem; and according to the reply and measures, carrying out checking by the supervisor.
Owner:SHANGHAI UNIV +2

Unmanned surveying ship suitable for shield crossing river construction monitoring

InactiveCN110007672AAvoid collisionRealize emergency obstacle avoidanceMeasurement devicesWaterborne vesselsMicrocontrollerMicrocomputer
The invention discloses an unmanned surveying ship suitable for shield crossing river construction monitoring. The unmanned surveying ship comprises a ship body, a power system, a detection system anda main control system, wherein the main control system comprises a single chip microcomputer; an advancing obstacle avoidance center is arranged at a nose of the ship body; laser ranging sensors areuniformly arranged on the advancing obstacle avoidance center in the circumferential direction; the laser ranging sensors are connected to the single chip microcomputer; a proximity switch is arrangedin the advancing obstacle avoidance center; the proximity switch is connected to the single chip microcomputer; the detection system comprises an overwater sensor module, an underwater sensor module,an overwater monitor and an underwater monitor; and each of the overwater sensor module and the underwater sensor module is provided with a sensor interface. An obstacle avoidance system is arrangedon a hull, and the obstacle avoidance system is mainly formed by the laser ranging sensors and the proximity switch, and the laser ranging sensors are capable of detecting obstacles in all directionsin order to prevent the hull from colliding with an obstacle. When the hull is very close to the obstacle, the proximity switch can close a steering engine in emergency, and emergency obstacle avoidance is achieved.
Owner:CHINA TIESIJU CIVIL ENG GRP CO LTD

Construction method for pipeline crossing river

Provided is a construction method for a pipeline crossing a river. The construction method comprises the first step that a flow guide ditch is dug, and an upstream cofferdam and a downstream cofferdam are built; the second step that dual rows of deep wells are dug in a layered mode; the third step that the pipeline is placed in a pipe ditch, a steel pipe is pressed by a saddle-shaped ballast block, a rubber plate is arranged on the lower portion of the ballast block in a cushioned mode, then the pipe ditch is refilled, the cofferdams are removed, and the flow guide ditch is refilled. The pipe ditch is dug at one time, the flow guide ditch is dug outside the area, repeat rainfall is not needed, and time is saved.
Owner:SHAANXI LONGHAI ENG CONSTR

Blocking stator, manufacturing method thereof, and motor

The invention discloses a blocking stator, a manufacturing method thereof, and a motor. The block stator manufacturing method comprises the steps of: S1, will pay winding wound on the bobbin to pay a plurality of windings, the winding having at least one pay-tap, tap the at least one secondary winding wound in a plurality of at least one of the at least one winding bobbin pin, block core in which a plurality of windings in order to pay by a cross-river cable; S2, the primary winding is wound in a plurality of the primary winding of the bobbin; S3, the step S2 of the main winding has a plurality of primary windings wound in each insertion step S1 of the winding wound between a plurality of payment to pay two adjacent windings to constitute each The stator block. The method of manufacturing a stator block improves the efficiency of the winding of the stator block, and the block to reduce manufacturing and material costs of the stator.
Owner:GD MIDEA ENVIRONMENT APPLIANCES MFG +1
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