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47results about How to "Reduce construction difficulties" patented technology

Set bearing platform foundations and construction method thereof

ActiveCN102767189AReduce the impact of adverse factorsReduce construction difficultiesFoundation engineeringYardLifting equipment
The invention discloses set bearing platform foundations and a construction method thereof. The foundations comprise piles which are vertical. Bearing platform plates are arranged horizontally on the piles, the piles and the bearing platform plates are connected by cast-in-place concrete, temporary water stop air sacs are arranged on the bottom portion of the cast-in-place concrete. The piles are subjected to in-situ hole drilling and pouring, and the bearing platform plates are precast in overland precast yards. The precast bearing platform plates are transported to bridge locations by land or by water and hoisted by overwater hoisting devices, and the bearing platform foundations are constructed according to the construction method of the set bearing platform foundations. According to the set bearing platform foundations and the construction method, separate precast and assembly of bearing platform foundations can be achieved, influences of adverse factors of deep water, tides, shipping, ecology and the like on deep-water bridge foundation construction in rivers, lakes and seas are reduced, construction difficulties are reduced, the security of engineering quality is guaranteed, and construction progress is expedited. The structure design is reasonable, the construction method is reliable, and the method can be widely applied in deep-water bridge foundation construction of rivers, lakes and seas.
Owner:CHINA RAILWAY FIFTH SURVEY & DESIGN INST GRP

Integral assembling type building system and installing method

The invention belongs to the technical field of building engineering and particularly relates to an integral assembling type building system and an installing method. The integral assembling type building system is characterized by comprising prefabricated steel reinforced concrete combination columns, prefabricated steel reinforced concrete combination beams, prefabricated reinforced concrete slabs, a prefabricated light integral inner wall and a prefabricated concrete heat preservation outer wall which are assembled together. The building system has the beneficial effects that all the members are prefabricated in a factory, quality is controlled conveniently, and the construction difficulty caused by outdoor weather changes can be reduced. Moreover, splicing is carried out on site, and installing is safe, fast and convenient. The recycle rate of formworks is high, work for the formworks and frame pipes on site is avoided, the number of times of use and consumption of the formworks and frame pipes are reduced, on-site labor is saved, the on-site dust raise phenomenon is improved substantially, the influence on the environment is small, and environmental pollution is reduced.
Owner:SHANDONG YUANBO BUILDING TECH CO LTD

Hoisting platform special for hoisting and mounting assembled concrete building component and application method of hoisting platform

The invention discloses a hoisting platform special for hoisting and mounting an assembled concrete building component and an application method of the hoisting platform. The hoisting platform comprises a synchronous jacking control system, a platform stable control system and a hoisting and mounting system, wherein the hoisting and mounting system comprises a support mast, a hoisting and mountingplatform is arranged on the upper portion of the support mast, the hoisting and mounting platform sequentially comprises a first track layer, a temporary positioning support layer and a second tracklayer from bottom to top, a first track is arranged on the first track layer, a second track is arranged on the second track layer, a floor hoisting mechanism is arranged on the first track, and a wall board hoisting mechanism is arranged on the second track; a platform mounting and demounting mechanism is further movably arranged on the hoisting and mounting platform, a wallboard vertical conveying mechanism is connected to one side of a building body, and a floor staircase vertical conveying mechanism is connected to the other side of the building body. The hoisting platform is high in automation level, accurate in positioning, high in digitalization and modularization level, capable of greatly increasing work efficiency and high in practicality and market value.
Owner:CHINA CONSTR SEVENTH ENG DIVISION CORP LTD

Construction method of inclined column type corrosion resistant foundation for power line in salt lake area

ActiveCN102926398AEnhanced lateral rollover resistanceImprove stabilityProtective foundationGlass fiberSalt lake
The invention relates to the technical field of power transmission, and particularly relates to a construction method of an inclined column type corrosion resistant foundation for a power line iron tower in a salt lake area. The construction method comprises the following steps of: 1) a foundation treating step; 2) a glass fiber reinforced plastic corrosion-resistant layer mounting step; 3) a steel foundation binding step; 4) a glass fiber reinforced plastic template supporting step; 5) a concreting step; 6) a glass fiber reinforced plastic sealing step; 7) a concrete maintaining and support structure removing step; and 8) a foundation pit backfilling step. The method provided by the invention is characterized in that compared with the conventional rigid straight column foundation, the center slope of the flexible-board inclined column type foundation is the same as the slope of major materials of tower legs of an upper power transmission line structure; as a result, the horizontal acting force on the top surface of the foundation and the bending moment acting on a foundation base plate are reduced, the integrated force condition of a main column and the base plate of the foundation is greatly improved, the lateral antidumping and anti-sliding stability of the foundation is enhanced, the designed dimension of the foundation is reduced and 5%-15% of concrete material quantity for a main foundation body is saved; and therefore, the economical efficiency is quite obvious; and the glass fiber reinforced plastic covered concrete foundation improves the corrosion resistance of the salt lake region. The schematic diagram of the construction method is shown in the following figure.
Owner:QINGHAI ELECTRIC POWER DESIGN INST +3

Efficient gas extraction method for up-and-down combined fracturing area of broken soft low-permeability coal seam well

ActiveCN111535791ASolve the small displacementSolve difficultyFluid removalGas removalMining engineeringCoal
The invention provides an efficient gas extraction method for an up-and-down combined fracturing area of a broken soft low-permeability coal seam well. The method comprises the following steps that amining area main roadway or an operation roadway is formed under a coal mine, and a place is provided for construction operation and gas extraction; secondly, a group of directional long drill holes capable of covering a plurality of working surfaces of a mining area are constructed along a certain distance between a coal seam roof and a coal seam top boundary or between a coal seam floor and a coal seam bottom boundary under a coal mine; then, a roadway penetrating well communicates with the underground mining area main roadway or the operation roadway on the ground, so that a ground fracturing manifold is connected with a ground well-underground long drill hole high-pressure connecting device; and then staged fracturing construction is alternately carried out on the underground long drill hole of the coal mine through ground large-scale fracturing equipment, staged fracturing operation is mainly completed in an underground roadway, and finally grid-connected extraction is carried outthrough a special extraction pipeline for underground gas of the coal mine. According to the method, the transformation strength and the extraction effect of the underground broken soft low-permeability coal seam reservoir of the coal mine are effectively improved, and underground regionalized dead-corner-free low-cost efficient gas extraction of the coal mine is achieved.
Owner:XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP

Online monitoring platform for underground cable channels of urban power grids

The invention discloses an online monitoring platform for underground cable channels of urban power grids. The online monitoring platform comprises a monitoring center and a movable monitoring unit connected with the monitoring center, the movable monitoring unit comprises an overhead rail, a movable mechanism and a monitoring terminal, the overhead rail is arranged in a cable trench, the movable mechanism is arranged on the overhead rail, the monitoring terminal is arranged on the movable mechanism and comprises a sensor module, a control module, a video monitoring module and a first communication module, a positioning device, an ultrasonic rat repellent and a deinsectization device are arranged on the movable mechanism, the positioning device is connected with the monitoring center, and the sensor module comprises a temperature sensor, a humidity sensor, an open flame sensor, a combustible gas sensor and a water level sensor. According to the online monitoring platform, temperature, humidity, open flame, combustible gas and waterlogging in the cable trench can be monitored, a certain prediction functions are achieved by the aid of monitored information, and the cable trench can be visually monitored in real time.
Owner:NANYANG POWER SUPPLY COMPANY OF STATE GRID HENAN ELECTRIC POWER

Power cable fault positioning platform

The invention discloses a power cable fault positioning platform, including a cable fault detector arranged on a power cable, a signal back-transmission mechanism, a mobile monitoring station and a mobile monitoring unit. The mobile monitoring unit comprises an overhead track and a mobile mechanism wherein the mobile mechanism is provided with a monitoring terminal; the signal back-transmission mechanism comprises a communication line arranged in a cable conduit and a number of wireless receivers; the fault detector is provided with a first wireless communication module; the monitoring terminal comprises a control module, a second wireless communication module, a storage module, a sensor module, a video monitoring module and wireless emitters arranged correspondingly to the wireless receivers; and the mobile mechanism is provided with a plurality of fault positioning mechanisms through an ejection mechanism. The platform of the invention performs comprehensive monitoring to the cable fault through the real-time acquisition of online current by the fault detector and through the fault point positioning, allows the workmen to quickly find the specific fault position so as to realize the rapid maintenance to the fault point.
Owner:PINGDINGSHAN POWER SUPPLY ELECTRIC POWER OF HENAN

Rupture starting sliding sleeve

The invention belongs to the technical field of oil and gas well fracturing reconstruction, and particularly discloses a rupture starting sliding sleeve designed for oil and gas well multi-strata-series fracturing reconstruction. The rupture starting sliding sleeve comprises an upper connector and a lower connector which are connected through threads. A plurality of vertical long-strip-shaped fracturing ports are evenly formed in the pipe wall of the upper connector in the circumferential direction. A piston is installed inside the upper connector, and the fracturing ports are plugged by the piston. A rupture disk clamper is installed at the upper portion of the pipe wall of the upper connector and penetrates through the pipe wall of the upper connector. A rupture disk is installed at the end, located inside the upper connector, of the rupture disk clamper and is in a disk shape with the inner diameter the same as that of the upper connector. A spacer for spacing the upper connector is formed in the upper connector. The rupture disk is located at the upper portion of the piston. By means of the rupture starting sliding sleeve, first-stage fracturing during sleeve sliding sleeve multi-layer and multi-section fracturing construction can be achieved, perforation operation is avoided, the construction efficiency is improved, the construction cost is saved, and the construction difficulty and the construction risks are reduced.
Owner:PETROCHINA CO LTD

Power cable fault monitoring platform

The invention discloses a power cable fault monitoring platform. The power cable fault monitoring platform comprises a fault detector arranged on a cable line, a signal return mechanism arranged in a cable duct, a monitoring center and a movable monitoring unit connected with the monitoring center, wherein the movable monitoring unit comprises an overhead track formed in the cable duct, a moving mechanism arranged on the overhead track and a monitoring terminal arranged on the moving mechanism, the signal return mechanism comprises a communication line arranged in the cable duct and a plurality of data interface modules formed in the communication line, and the fault detector is provided with a first wireless communication module. The fault detection of the whole cable and monitoring environment information and device information in the cable duct can be achieved only by using a small number of sensors, an online current mode is acquired in real time through the fault detector to conduct comprehensive monitoring on line faults, and fault judgment is more timely and accurate.
Owner:PINGDINGSHAN POWER SUPPLY ELECTRIC POWER OF HENAN

Fabricated building of pre-assembling structure of prefabricated section steel concrete shear wall

The invention provides a fabricated building of a pre-assembling structure of a prefabricated section steel concrete shear wall. The building is provided with a structure preformed in a factory, and the preformed structure comprises section steel concrete shear walls, prefabricated section steel concrete beams, steel bar truss concrete slabs, prefabricated reinforced concrete stairs, light masonry partition walls, and prefabricated foam-concrete outer walls. The invention further provides a mounting method of the fabricated building of the pre-assembling structure of the prefabricated section steel concrete shear wall. The fabricated building disclosed by the invention is characterized in that all components are prefabricated in the factory, so that the quality of the components is convenient to control, and construction difficulties caused by the change of outdoor weather can be reduced. The fabricated building is assembled on site, and safe, rapid and convenient to mount; the recycling rate of templates is high, work about templates and tube frames is omitted on side, the use and the consumption of the templates and the tube frames are reduced, on-site workers are saved, and the phenomenon of on-site raise dust is greatly improved, so that the influence on environment is small, and the environmental pollution is reduced. The fabricated building disclosed by the invention is suitable for various houses and buildings, such as high-rises, small high-rises, garden houses and villas.
Owner:重庆欧冠钢结构有限公司

Rectangular pipe column and H-shaped steel beam vertical externally-connected rigidly-connected joint

The invention discloses a rectangular pipe column and H-shaped steel beam vertical externally-connected rigidly-connected joint aiming to solve the problems of complex manufacturing process, long construction period, and the like in the prior art. The rectangular pipe column and H-shaped steel beam vertical externally-connected rigidly-connected joint comprises a rectangular pipe column and an H-shaped steel beam, wherein a corbel box-shaped corbel connecting member is arranged between the rectangular pipe column and the H-shaped steel beam; the box-shaped corbel connecting member comprises an upper end plate, a lower end plate and a vertical plate, wherein the vertical plate is arranged between the upper end plate and the lower end plate, one sides of the upper end plate and the lower end plate are arranged on the side surface of the rectangular pipe column, and one sides opposite to the sides and the vertical plate are respectively connected with a top flange, a bottom flange and a ventral shield of the H-shaped steel beam. The invention has the advantages of completing the internal force transmission of the joint by the arrangement of the box-shaped corbel connecting piece, preventing the stress of a welding line from centralizing, enhancing the shock resistance and the bending resistance of the joint, realizing batch production, enhancing processing efficiency, simplifyingthe process, enhancing welding quality, reducing construction difficulty and being convenient for transportation and building space arrangement, solving the problem of difficult welding of a partition board in the rectangular pipe column, achieving the combination of industrialized flow line production and field fast assembly and splicing and shortening the building construction period.
Owner:CENT RES INST OF BUILDING & CONSTR CO LTD MCC GRP +1

Porous plum-blossom-shaped pipe and preparation method thereof

The invention discloses a porous plum-blossom-shaped pipe, and belongs to the technical field of high-molecular materials. The raw materials comprises the following substances in parts by weight: 45-55 parts of high-density polyethylene resin powder, 18-22 parts of low-density polyethylene resin powder, 4.5-5.5 parts of high-strength glass fiber, 0.45-0.55 parts of a property modification stabilizer, and 9-11 parts of a property modification filling material. The plum-blossom-shaped pipe is relatively smooth in inner wall, cables can directly pass through the pipe without using other utensils, and time and labor are saved; the plum-blossom-shaped pipe is resistant to acids and bases, resistant to salts and alkalis, resistant to corrosion, resistant to oxidation, resistant to ageing, suitable in structure, high in usage value, long in service life, green and environment-friendly, and helps to improve the construction speed and substantially reduce the construction cost of an engineering unit.
Owner:陕西中昌科技有限公司

Method and system for remediation of contaminated groundwater by adopting horizontal transverse pipes arranged in radiation type

The invention belongs to the technical field of contaminated groundwater treatment, and more specifically relates to a method and system for remediation of contaminated groundwater by adopting horizontal transverse pipes arranged in a radiation type. According to the method provided by the invention, channel groups are arranged in the remediation areas of groundwater to place the transverse pipe groups, and the transverse pipe groups and a water collecting vertical shaft work together, so that the collection area of the groundwater can be greatly increased, the efficiency of collection and treatment of the groundwater can be effectively improved, the in-situ remediation treatment of deep groundwater can be realized, and the elevation range of groundwater treatment can be accurately controlled; the number of water supply vertical shafts can be greatly reduced, the construction costs can be reduced, and the construction difficulties and safety risks can be reduced; the problem that the elevation range of groundwater treatment is difficult to accurately control through a method of discharging the groundwater by adopting pipe well groups is overcome, and the difficulty that a permeablereactive barrier cannot repair the deep groundwater is overcome; and according to the method and system for remediation of the contaminated groundwater by adopting the horizontal transverse pipes arranged in the radiation type, the technical project quantity is small, the construction cost is low, the horizontal transverse pipes can collect and treat the groundwater for a long time after being driven under the ground, and the operation and maintenance costs in the later period are low.
Owner:POWERCHINA WATER ENVIRONMENT GOVERANCE

An underground cable protective device convenient for maintenance

The invention provides an underground cable protective device convenient for maintenance and belongs to the technical field of electric power facilities. The device comprises a cable, a protection mechanism used for protecting the cable and a support mechanism arranged below the protection mechanism. The protection mechanism comprises a plurality of protection tubes and a plurality of three-way connectors connected with the protection tubes. A plurality of flexible rubber strips are arranged on both sides of the inner part of each protection tube. First joints, perpendicular to the protection tubes, of the three-way connectors are provided with caps. The support mechanism comprises a base plate and side plates arranged on the two sides of the base plate. The lower portions of the side plates are provided with several rotating shafts. Several cover plates are arranged on the side plates. The lengths of the cover plates are equal to the lengths of the protection tubes. The both ends of the cover plates are semi-circular. The protection mechanism and the support mechanism are both of non-metallic materials. The device of the invention can protect underground cables, provides convenience for maintenance after faults occur to the underground cables, can effectively reduce the construction intensity of the underground cables and can raise the construction efficiency.
Owner:国网河南省电力公司南召县供电公司

Underground nuclear power station cooling vertical shaft

The invention discloses an underground nuclear power station cooling vertical shaft. The underground nuclear power station cooling vertical shaft comprises a round-table-shaped vertical shaft body which is located in the mountain and provided with an opening in the upper portion, a water collection pool is arranged at the bottom of the vertical shaft body, and is provided with a cooling water outlet pipe and a blow off pipe, an air supply system for conveying cold air is arranged below an inner cavity of the vertical shaft body, a hot water distribution system connected with a condenser of a turbogenerator is arranged above the air supply system, input hot water is atomized and sprayed through the hot water distribution system, a cooling ventilation gallery communicated with the outer portion of the earth surface is arranged in the middle of the inner cavity of the vertical shaft body, and a mist eliminator is arranged on the upper portion of the inner cavity of the vertical shaft body. A vertical shaft structure is used for replacing a cooling tower structure, on the basis of the mist spraying cooling principle, hot water entering the cooling vertical shaft forms atomized micro particles, the hot water evaporation and heat absorbing process is enhanced, and through the air supply system, spiral cyclone is formed in the cooling vertical shaft, and heat exchange is enhanced. Meanwhile, arrangement of trickling fillers is abandoned, the cooling vertical shaft is structurally reduced greatly, and the construction and running cost is effectively reduced.
Owner:CHANGJIANG SURVEY PLANNING DESIGN & RES

A prefabricated strip foundation and its construction technology

The invention belongs to the technical field of construction engineering and particularly relates to a prefabricated assembly type strip foundation and a construction technology. The prefabricated assembly type strip foundation is characterized in that the prefabricated assembly type strip foundation comprises a longitudinal rebar; a plurality of hooping ribs are wound and fixed outside the longitudinal rebar; and the longitudinal rebar and the hooping ribs serve as a whole stress body through concrete pouring. The prefabricated assembly type strip foundation has the beneficial effects that factory prefabricated production can be achieved, quality control is convenient, construction difficulty caused by outdoor weather changes is avoided, field installation is safe, fast and convenient, energy conservation and environment protection are achieved, labor and time are saved, and the assembly efficiency is high.
Owner:SHANDONG YUANBO BUILDING TECH CO LTD

Fabricated shear wall lateral steel bar connecting device and application method thereof

The invention discloses a fabricated shear wall lateral steel bar connecting device and an application method thereof. The fabricated shear wall lateral steel bar connecting device comprises H-shaped steel, wherein U-shaped grooves are formed in the two ends of a side plate of the H-shaped steel respectively, horizontal reserved steel bars penetrate into the U-shaped grooves from prefabricated shear wall bodies on the two sides separately and are in threaded connection to high-strength nuts on the inner side wall of the H-shaped steel, steel rod reserved holes are formed in notches of the U-shaped grooves and in the side plate of the H-shaped steel, the steel rod is inserted into the steel rod reserved holes in a matched manner, and longitudinal reserved steel bars of a lower wall body penetrate through included angles formed by the two ends of the outer side wall of the H-shaped steel and the horizontal reserved steel bars and are fixedly connected to the horizontal reserved steel bars. Prefabricated shear walls are hoisted from the upper portion of the longitudinal reserved steel bars from top to bottom, the H-shaped steel, the horizontal reserved steel bars and the longitudinal reserved steel bars are assembled and connected to form a whole after the shear walls are hoisted in place, the shear resistance and the integrity of the wall bodies are enhanced, stirrups at connecting positions are replaced with the H-shaped steel, binding with the stirrups is reduced, the hoisting efficiency is improved, the construction difficulty is reduced, and the device has the advantages of simple structure, strong shear resistance, good integrity, practicability and high efficiency.
Owner:XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY

Mounting method of assembled building

The invention discloses a mounting method of an assembled building. The mounting method includes: (1), performing foundation construction, and pre-burying a connecting plate; (2), mounting a prefabricated steel reinforced concrete shear wall; (3), mounting a prefabricated steel reinforced concrete beam; (4), mounting a prefabricated lightweight masonry partition wall; (5), mounting a prefabricated steel truss reinforced concrete slab; (6), mounting a prefabricated reinforced concrete staircase; (7), mounting a prefabricated steel reinforced concrete balcony; (8), mounting a prefabricated steel reinforced concrete air conditioner plate; (9), mounting a prefabricated foam concrete heat-insulating exterior wall; (10), mounting a previous section of the prefabricated steel reinforced concrete shear wall; (11), repeating the steps (2)-(10) to complete mounting of each floor of the building; (12), after each floor of the building is mounted, mounting doors and windows of each floor of the building in a unified manner. The mounting method completely adopts prefabricated components, thereby having the advantages of environment friendliness, energy conservation and green construction.
Owner:HUAIYIN INSTITUTE OF TECHNOLOGY

High-speed maglev track and bridge beam part structure containing longitudinal-cross beam type track section

The invention discloses a high-speed maglev track and bridge beam part structure containing a longitudinal-cross beam type track section. The high-speed maglev track and bridge beam part structure includes a concrete beam (1) and a rail supporting table (2) arranged at the top of the concrete beam (1), and further includes the longitudinal-cross beam type track section which is installed on the rail supporting table (2) through a fastener system (3), and includes two longitudinal beams arranged in the circuit direction and a plurality of cross beams arranged in the direction perpendicular to acircuit; and the cross beams include track section cross beam top plates (4), track section cross beam bottom plates (5) and track section cross beam web plates (6), and the longitudinal beam includes sliding top plates (7) of track functional parts, magnetic guiding plates (8) of track functional parts, track section longitudinal beam web plates (9) and pi-shaped steel (10). According to the structure, the track structure is completely separated from the bridge structure, a longitudinal-cross beam type track section rail is used, the precision in all directions can be precisely positioned bythe post-cast rail supporting table during construction, and during operation and maintenance, the rail elevation can be adjusted through the fastener system.
Owner:CHINA RAILWAY MAGLEV TRANSPORTATION INVESTMENT CONSTR CO LTD

Prefabricated hybrid structure prefabricated toilet and manufacturing method thereof

The invention provides a hybrid structure prefabricated toilet for a prefabricated building and a manufacturing method thereof. The toilet comprises a wall unit, a sewage main riser, and a bottom plate unit fixedly connected with a steel beam or a superposed beam. During operation, the bottom plate unit is fixedly connected with the steel beam or the superposed beam through connecting pieces I. The bottom plate unit is connected with a floor through cast-in-place nodes. A wallboard is fixedly connected with the bottom plate unit through the matching of a connecting plate II and a correspondingconnecting plate I. The sewage main riser penetrates through and is fixedly connected to the bottom plate unit. The manufacturing method of the toilet includes the steps of scheme design, prefabricating the bottom plate unit, prefabricating the wallboard, transportation to the site, assembling and pouring floors and the like. The toilet can reduce construction difficulties caused by weather changes, is convenient and quick to install, and has good anti-leakage performance.
Owner:重庆宜府住工科技有限公司

High-stability protection device for high-rise building construction

The invention relates to a high-stability protection device for high-rise building construction in the field of protection devices for building construction. The device comprises a mounting rack, wherein the mounting bracket is provided with mounting bolts; support plates are arranged on the mounting rack; the support plates are provided with a guide roller and a winding roller; the winding rolleris provided with a driven gear ring; the driven gear ring is provided with a chain; a drive motor is provided with a driving ring gear; the winding roller is provided with a second fixing structure;the winding roller is provided with a first steel cable; the first steel cable is provided with a second steel cable; the second steel cable is provided with straight plates; each straight plate is provided with a grid plate; each grid plate is provided with first fixing structures; each grid plate is provided with sliding plates and sleeve plates which are slidably connected; each sliding plate is provided with positioning holes; each sleeve plate is provided with a second spring; each second spring is provided with an insertion rod; each insertion rod is connected to the corresponding positioning hole in an inserted mode; each grid plate is provided with a bottom plate and an L-shaped plate; and each bottom plate is movably connected to the corresponding L-shaped plate. According to theprotection device, a distance between the two groups of grid plates can be adjusted through cooperation of the bottom plates and the L-shaped plates and the cooperation of the sleeve plates and the sliding plates, so that the size of the device can be adjusted according to the requirements for the construction environment, and the device is convenient for actual use.
Owner:马新国

Cement floor support plate and manufacturing method thereof

The invention provides a cement floor support plate and a manufacturing method thereof. The cement floor support plate comprises a bottom template with an embedded steel plate. Each steel bar truss comprises a group of upper chord steel bars and two groups of lower chord steel bars. The upper chord reinforcing steel bars and the lower chord reinforcing steel bars are welded into a whole through the wave-shaped web member reinforcing steel bars to form a three-dimensional structure truss with triangular end faces. The steel bar truss is welded with the steel bar mesh. The steel bar truss and the steel bar mesh as a whole are welded with the pre-embedded steel plate. A welding connection process is adopted, the bottom formwork body is provided with the embedded steel plate, production is more convenient, a bolt or screw connection mode is not needed, a punching production process is omitted, production efficiency is high, and performance is reliable. By adopting the reinforcing mesh, the defect of difficulty in on-site reinforcement penetrating can be overcome, manual transverse reinforcement penetrating is not needed, the problem of difficulty in on-site equipment pipeline construction is also solved, the labor intensity is reduced, and the construction cost is reduced.
Owner:济南华强新型建材有限公司

A blasting start sliding sleeve

The invention belongs to the technical field of fracturing transformation of oil and gas wells, in particular to a blasting start-up sliding sleeve designed for multi-layer fracturing transformation of oil and gas wells, comprising an upper joint and a lower joint connected by threads, and the pipe wall of the upper joint is evenly spaced along the circumferential direction. There are multiple vertical strip-shaped fracturing ports, a piston is installed inside the upper joint, and the piston blocks the fracturing port; a bursting disc holder is installed on the upper pipe wall of the upper joint, and the bursting disc holder passes through On the pipe wall of the upper joint, the end of the bursting disc holder located inside the upper joint is equipped with a bursting disc. The bursting disc is in the shape of a disc with the same inner diameter as the upper joint, forming a spacer in the upper joint to block the upper joint. The bursting disc is located on the upper part of the piston. This kind of blasting starting sliding sleeve can realize the starting sliding sleeve of the first stage of fracturing during the multi-layer and multi-stage fracturing construction of the casing sliding sleeve, eliminating the perforation operation, improving the construction efficiency and saving construction. Reduce costs and reduce construction difficulties and risks.
Owner:PETROCHINA CO LTD

Iron tower cable support fixing device

The invention discloses an iron tower cable support fixing device, characterized in that the upper portion and the lower portion on the inner side of a first connecting angle steel are respectively provided with a first bended plate and a second bended plate through a first bolt, and the upper portion and the lower portion on the inner side of a second connecting angle steel are also respectively provided with a first bended plate and a second bended plate through a first bolt; the other ends of the first bended plate and the second bended plate are connected through a second bolt; a cable support angle steel is connected between one end of the first connecting angle steel and one end of the second connecting angle steel. According to the invention, the iron tower cable support fixing device is in connection with the angle steels on an iron tower, and can effectively support cables. The iron tower cable support fixing device can be applied to any part of the iron tower, flexibly adjust a fixing position, enhance structure stability, reduce construction difficulties, and greatly improve work efficiency and safe performance.
Owner:SHANDONG LUNENG TAISHAN TOWER

Concrete filling and pouring method for connecting upper column section and lower column section of prefabricated steel reinforced concrete column

The invention discloses a concrete filling and pouring method for connecting an upper column section and a lower column section of a prefabricated steel reinforced concrete column. The method is characterized in that filament sleeves and lug plates are used for connecting steel bars and a profile steel framework in upper and lower prefabricated steel reinforced concrete columns into a whole; a pisolite type grouting material is used for pouring a connecting area of the upper and lower columns to form an assembly type integral structure column; the filament sleeves are arranged on the reinforcing steel bars at the two ends of the upper and lower prefabricated steel reinforced concrete columns and are in screwed connection with the reinforcing steel bars; and floor steel beams welded with the profile steel framework are arranged at the upper parts of the upper and lower prefabricated profile steel concrete columns. Compared with the prior art, the concrete filling and pouring method for connecting the upper column section and the lower column section of the prefabricated steel reinforced concrete column has the advantages that joint connection is moved to the middle of the column, beam-column joints with complex structures are avoided, construction quality and stress safety are guaranteed, factory production of the prefabricated steel reinforced concrete column is achieved, production efficiency is high, quality is more controllable, and the problem that an existing steel reinforced concrete column structure is difficult to construct on site is well solved.
Owner:ZHONGCHUAN NO 9 DESIGN & RES INST

A construction method for inclined column anti-corrosion foundation of transmission lines in salt lake area

The invention relates to the technical field of power transmission, and particularly relates to a construction method of an inclined column type corrosion resistant foundation for a power line iron tower in a salt lake area. The construction method comprises the following steps of: 1) a foundation treating step; 2) a glass fiber reinforced plastic corrosion-resistant layer mounting step; 3) a steel foundation binding step; 4) a glass fiber reinforced plastic template supporting step; 5) a concreting step; 6) a glass fiber reinforced plastic sealing step; 7) a concrete maintaining and support structure removing step; and 8) a foundation pit backfilling step. The method provided by the invention is characterized in that compared with the conventional rigid straight column foundation, the center slope of the flexible-board inclined column type foundation is the same as the slope of major materials of tower legs of an upper power transmission line structure; as a result, the horizontal acting force on the top surface of the foundation and the bending moment acting on a foundation base plate are reduced, the integrated force condition of a main column and the base plate of the foundation is greatly improved, the lateral antidumping and anti-sliding stability of the foundation is enhanced, the designed dimension of the foundation is reduced and 5%-15% of concrete material quantity for a main foundation body is saved; and therefore, the economical efficiency is quite obvious; and the glass fiber reinforced plastic covered concrete foundation improves the corrosion resistance of the salt lake region. The schematic diagram of the construction method is shown in the following figure.
Owner:QINGHAI ELECTRIC POWER DESIGN INST +3

Wireless transmission communication equipment, method and system

InactiveCN105578621AImplement secondary encryptionImprove securityWireless communicationWireless transmissionAntenna feeder
The invention discloses wireless transmission communication equipment, method and system. The equipment is used for establishing a wireless communication network between a base station and a base station controller, and comprises a processing module, a network interface module, a communication encryption and decryption module, a memory module, a first wireless communication module, a second communication module and an antenna feeder module, wherein the network interface module is connected with the base station or the base station controller and used for performing protocol conversion on data transmitted by the base station or the base station controller; the communication encryption and decryption module is used for encrypting or decrypting the data after being performed protocol conversion by the network interface module; the first wireless communication module is used for receiving data transmitted by other wireless transmission devices through the antenna feeder module; and the second wireless communication module is used for forwarding data processed by the communication encryption and decryption module to other wireless transmission communication equipment through the antenna feeder module. The wireless transmission communication equipment, method and system provided by the invention solve the problems of difficult construction, high cost, large environmental disruption, data transmission security and so on in the existing base station subsystem.
Owner:LEFT CROWN HIGH TECH TECHN CO LTD
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