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304results about How to "Reliable force" patented technology

Multifunctional comprehensive restraint device for whole construction and operation process of long-span hybrid-beam cable-stayed bridge

The invention discloses a multifunctional comprehensive restraint device for whole construction and operation process of a long-span hybrid-beam cable-stayed bridge and relates to a bridge engineering technique. The multifunctional comprehensive restraint device comprises longitudinal dampers, multidirectional slideable supports and retractable devices. Longitudinal damping devices, longitudinal comprehensive multifunctional devices and transverse windproof supports with independent functions are arranged between a main beam and bridge towers. A damping function is independently realized at the operation period of the bridge. The longitudinal comprehensive multifunctional devices realize solidifying, pushing and limiting functions in the whole construction and operation process of the bridge. The multifunctional comprehensive restraint device provides effective rigidity and damping for the operation period of the long-span hybrid-beam cable-stayed bridge and guarantees that the static and dynamic response of the bridge is within an acceptable range. At the same time, the longitudinal comprehensive multifunctional devices are used for taking a temporary solidifying function in the splicing process of the upper structural cantilever of the bridge and are also used as main beam pushing force-bearing structures under the condition of full-bridge closure, a no-stress geometrical linear bridge construction control method is realized, the functions are clear, the force is born reasonably, the economic and practical performance is high and the multifunctional comprehensive restraint device is suitable for all kinds of long-span hybrid-beam cable-stayed bridges.
Owner:CCCC HIGHWAY CONSULTANTS

Anchorage performance detection testing apparatus and method for carbon fiber adhesion reinforcement

InactiveCN103048264AJudging the mechanical performance of anchorageCheck construction qualityUsing mechanical meansMaterial analysisFiberCarbon fibers
The invention discloses an anchorage performance detection testing apparatus for carbon fiber adhesion reinforcement. The testing apparatus comprises a testing bench, a concrete test piece, a test fixture and a loading system. The reinforced concrete test bench is composed of a base, a blocking bed, a connecting bed and a stretching bed, carbon fiber sheets are adhered to the test piece, and a steel pressing plate and an anchor bolt are taken as auxiliary anchoring pieces; the test fixture is composed of an external covering steel plate, two inner clamping steel plates and a high-strength split bolt, strip-shaped steel teeth are formed on the surface of the external covering steel plate, pole steel teeth are formed on the surfaces of the inner clamping steel plates, the carbon fiber sheets are placed between the two inner clamping steel plates, the carbon fiber sheets and the two inner clamping steel plates are firmly adhered together by dipping glue, and the high-strength split bolt clamps the external covering steel plate, the inner clamping steel plates and the carbon fiber sheets; and the loading system is composed of a connecting screw rod, a tensile connecting steel plate, a tensile screw rod, a lifting jack and a sensor. The testing apparatus provided by the invention can quickly carry out an anchorage zone stress performance test on a concrete beam reinforced with adhesion of the carbon fiber sheets, and has the advantages of being convenient to make and simple to operate, and the like.
Owner:江苏华通工程技术有限公司

Large pulling resistance slidable ball and socket bearing

The invention relates to a slidable spherical hinge support with great anti-pulling force, comprising a base, a top plate, a support bottom plate, a spherical hinge supporting structure, a force transfer piece and an anti-pulling piece, wherein the spherical hinge supporting structure is positioned in the base; the base and the top plate are integrated into a whole to form a support shell; the support bottom plate is positioned below and fixed with the support shell; the support shell is provided with an inner cavity; the spherical hinge supporting structure, the force transfer piece and the anti-pulling piece are all positioned inside the inner cavity of the support shell, wherein the spherical hinge supporting structure is positioned on the bottom of the inner cavity and is supported on the support bottom plate; the top surface of the spherical hinge supporting structure supports the force transfer piece; a base and a vertical main body of the force transfer piece form a reverse T shape structure as a whole; the anti-pulling piece is arranged around the vertical main body of the force transfer piece and is supported on the base of the force transfer piece; the upper surface of the anti-pulling piece is limited by the inner surface of the top of the support shell; the vertical main body of the force transfer piece passes out from the top surfaces of the anti-pulling piece and the support shell, and is used to be connected with other construction pieces. The spherical hinge support has great anti-pulling force, which is suitable for building structures.
Owner:ARCHITECTURAL DESIGN RES INST OF GUANGDONG PROVINCE

Dragline curtain wall support system with steel truss at top and construction method thereof

The invention provides a dragline curtain wall support system with a steel truss at the top and a construction method thereof. The dragline curtain wall support system comprises main building structures at two sides, a support structure at the lower part, the steel truss at the top and a curtain wall steel cable at the middle, wherein the main building structures provide left and right fixed points of the steel cable, and the steel truss and the support structure at the lower part provide upper and lower fixed points of the curtain wall steel cable; a two-direction fixed mode of horizontal connection and vertical connection is adopted at the two ends of the steel truss and between the main building structures; and the horizontal connection is realized through a horizontal bearing support, and the vertical connection is realized through a vertical bearing support. The dragline curtain wall support system is simple in structure and convenient in construction; by virtue of the two-direction support fixed mode, the structure strength is increased, the node structure is simplified, and the structure safety is greatly increased; The horizontal bearing support is installed after vertical steel cable prestress tension to enable the steel truss to freely rotate under the action of the vertical force, so that the secondary stress of buildings at two sides is reduced; and by transferring force by a horizontal steel plate, the bearing force is large, the stress is reliable, and micro-vertical deformation of the steel truss can also be applicable.
Owner:CHINA AVIATION PLANNING & DESIGN INST GRP

Automatic bending machine for inflating valve

The invention discloses an automatic bending machine for an inflating valve, which mainly comprises a feed tray, a feed mechanism, a clamping and positioning mechanism, a bending mechanism and a material returning mechanism. The feed mechanism is arranged on a frame and a pneumatic finger on the feed mechanism is positioned under the feed tray. The clamping and positioning mechanism is arranged on the frame and a clamp opening on the clamping and positioning mechanism is aligned with a workpiece positioning surface of the material returning mechanism so as to clamp a workpiece. The material returning mechanism is arranged on the frame and a feed block on the material returning mechanism is positioned at the terminal point of a motion track line of the pneumatic finger of the feed mechanism. Because the steps of feeding, clamping and positioning, bending and returning the material are finished at one time, the automatic bending machine for the inflating valve has the advantages of high degree of automation, stable and reliable quality of the produced product, and high production efficiency. In addition, when the workpiece is clamped by the clamping and positioning mechanism, the workpiece is clamped with stressed dead points, so that the clamping and stressing are reliable. The mold is quickly exchanged, and is conveniently regulated.
Owner:厦门厦晖橡胶金属工业有限公司

Auxiliary device for binding reinforcements of reinforced concrete beam and application thereof

The invention relates to an auxiliary device for binding reinforcements of a reinforced concrete beam and application thereof. The device comprises two telescopic brackets and a cross bar, wherein the two telescopic brackets are arranged in parallel; and the cross bar is overlapped on the two brackets. The application of the auxiliary device is as follows: according to the condition of the beam depth, the heights of the brackets are regulated, so that the brackets are slightly higher than the beam; the auxiliary devices are arranged in pairs along the beam length direction at intervals of 3 to 5m and the auxiliary devices are placed on plate formworks at both sides of a beam formwork; beam upper main reinforcements are placed on the cross bars, beam stirrups are sleeved, beam lower main reinforcements are inserted and the reinforcements are bound to form a beam reinforcement skeleton; the beam reinforcement skeleton is pulled up, the auxiliary devices at the end where the reinforcement binding is completed are removed, the beam reinforcement skeleton is slowly placed into the beam formwork; and the pair of auxiliary devices at the upper part are moved to a next section to bind reinforcements of the section of beam. Compared with the prior art, the device disclosed by the invention is stably stressed, is convenient to use, has an adjustable height, can be reused, can be suitable for binding reinforcements with different beam depths, can be industrially produced in batches and has high social benefits and economic benefits.
Owner:SHANGHAI ZHONGJIN CONSTR GRP

Telecom smart card for realizing near field communication function

ActiveCN101937520ASolve poor contactWith short-range wireless communication functionNear-field transmissionRecord carriers used with machinesNear field communicationRadio frequency signal
The invention discloses a telecom smart card for realizing a NFC (Near Field Communication) function, which comprises a card base, an SIM (Subscriber Identity Module) card module and an antenna layer, wherein an NFC chip is embedded in the SIM card module, the SIM card module is arranged on the card base, and two reserved contacts and six functional contacts are arranged on the SIM card module; the antenna layer comprises a coil part, a connecting part and a card contact part which are integrated into a whole, and the card contact part is stuck to the card base. The telecom smart card is characterized in that newly added contacts are arranged in an idle area of the card base, and the NFC chip receives and sends radio frequency signals through two of the newly added contacts and controls a power source and signal transmission respectively through a third newly added contact and a fourth newly added contact. The telecom smart card has the function of the NFC and is compatible with an NFC mobile phone by adding the NFC chips and the contacts. In addition, the problems that reserved contacts in an SIM card are occupied and the contact between the antenna contact and the corresponding contact of the SIM card is poor in the prior art are solved.
Owner:WUHAN TIANYU INFORMATION IND

Reinforcing structure for rear opening in shear wall and construction method of reinforcing structure

The invention relates to a reinforcing structure for a rear opening in a shear wall and a construction method of the reinforcing structure. The reinforcing structure comprises an original wall, a floor slab and a structural steel frame for reinforcing, wherein the structural steel frame comprises steel angles and flat steel and covers the edge of the rear opening, and the steel angles and the flat steel are fixed at the rear opening through anchor bolts and high-strength plate bolts; and the steel angles are arranged on two sides of the wall, the vertical and horizontal junction position of the steel angles is welded and outwards extends along the opening, vertical legs are cut off from the extending part, the steel angles on two sides are connected through batten plates, the batten plates and the steel angles are in groove welding, the contact positions of the bottoms of the steel angles and the floor slab adopt flat groove welding through local cut steel angle lacing bars and the steel angles on two sides, and the flat steel is arranged on the floor slab on two sides of the wall. Cut-off reinforcing steel bars in the original wall are reinforced with plug welding matched with the structural steel frame after the ends of the reinforcing steel bars are reserved, anchoring steel angles are added between the bottom of the floor slab and the lower wall, two legs attached to the wall surface are connected by high-strength bolts and connected with the floor slab and the flat steel through the high-strength plate bolts.
Owner:倡创(上海)咨询管理事务所

Design method for annular structural member diffusion bonding fixture

ActiveCN108509750ASmall expansion coefficientSolve the problem of not being able to apply the proper connection pressureGeometric CADWelding/cutting auxillary devicesEngineeringAlloy
The invention discloses a design method for an annular structural member diffusion bonding fixture. A proper fixture material is selected, and a fixture is guaranteed to be safely used while an expansion pressure difference which is large enough is provided. In order to guarantee to generate even and stable connection pressure on a connection interface, a fixture structure and an annular member structure are corresponded, and detail characteristics are similarly matched; the inner wall of the fixture is in complete contact with the outer surface of a connection member as far as possible; and the outer wall of the fixture is convenient in manufacture, saves cost and is designed to be regular cylindrical surface. The coefficient of thermal expansion of an annular fixture manufacture materialis reasonably selected, since the expansion coefficient of the fixture material and the expansion coefficient of specimen alloy are similar in a cooling process, a cooling shrinking difference is small, and an influence on a connection interface is small. By use of the technical scheme of the invention, the successful connection of TiAl alloy and Ti2AlNb alloy is realized, and a reference is provided for the diffusion bonding of other annular structural members with a large outer layer metal expansion coefficient.
Owner:NORTHWESTERN POLYTECHNICAL UNIV

Screw thread twist-stretch transverse stretch-draw prestress exerting system of adjustable and controllable bamboo and wooden beam

A screw thread twist-stretch transverse stretch-draw prestress exerting system of an adjustable and controllable bamboo and wooden beam is suitable for a prestress bamboo and wooden beam in the field of civil engineering and solves the problems that an existing prestress bamboo and wooden beam is complex in prestress exerting technology, low in accurate degree, unadjustable in size of prestress during a using process and the like. The system comprises an arc-shaped fixed block of a groove, a bolt, a steel backing plate, a prestressed bar, an anchorage device and the like. When construction is specifically carried out, a line type of the prestressed bar can be selected through arrangement of a proper buckling point of the prestressed bar, the prestressed bar is fixed at the beam end in an anchoring mode, transverse displacement of the prestressed bar is limited through the fixed block of the groove, the fixed block is enabled to move up and down through a nut rotatably marked with an angel, and the prestressed bar is driven to generate transverse relative displacement with bamboo and wooden materials in a pressed area to exert prestress. When the prestress is exerted by the screw thread twist-stretch transverse stretch-draw prestress exerting system of the adjustable and controllable bamboo and wooden beam, a hydraulic jack and other professional stretch-draw devices are not needed, construction is convenient, through the fact that the rotary angle of the nut can be controlled, the size of the prestress can be adjusted at any time in a using process, stress bearing is reliable, and adjust and control are convenient.
Owner:NORTHEAST FORESTRY UNIVERSITY

Testing mechanism for concrete creep under corrosion action, application and creep testing method

The invention discloses a testing mechanism for concrete creep under the corrosion and load coupling action. The testing mechanism comprises a stress steel plate and a pressure sensor, wherein the stress steel plate is installed on the upper portion of a testing sample. The testing mechanism is characterized in that the testing sample is installed in the center of an open container containing a corrosion solution; a conductive metal net is arranged in the corrosion solution, a steel bar in the testing sample is connected with the positive electrode of a constant-voltage direct-current power source, the conductive metal net is connected with the negative electrode of the constant-voltage direct-current power source, and an electrochemical corrosion circuit is formed by the corrosion solution, the constant-voltage direct-current power source, the conductive metal net and the testing sample; a dial indicator is installed on the testing sample. The creep testing method of the testing mechanism comprises the first step of manufacturing of the testing sample, the second step of installation, the third step of loading and the like. The creep characteristics of concrete under the corrosion and load coupling action are taken into consideration and better conform to the environment state of practical engineering structures, tests have higher engineering value, and significant engineering application value and wide market application prospects are achieved.
Owner:HUNAN CITY UNIV

Straddle method of cantilever of long-span simply supported steel truss beam of horizontal curve section

ActiveCN103696374AReduce temporary construction facilitiesReduce on-site workloadBridge erection/assemblyEconomic benefitsEngineering
The invention relates to a straddle method of a cantilever of a long-span simply supported steel truss beam of the horizontal curve section. The straddle method comprises calculating the lengths of main truss rods arranged on the inner side and the outer side of a cantilever span curve and main truss rods arranged on the inner side and the outer side of an anchor span curve according to the radius of a horizontal curve, the position on the horizontal curve of a bridge span structure and the main truss spacing; hoisting the main truss rods arranged on the inner side and the outer side of the cantilever span curve to the position of a permanent support arranged at the top of an Nth pier, enabling the permanent support arranged at the pier top and the main truss rods arranged on the inner side and the outer side of the anchor span curve to be connected together through a temporary connection structure and performing cantilever construction of steel beam rods along the design axis; removing the temporary connection structure after the bridge span is straddled in place. According to the straddle method of the cantilever of the long-span simply supported steel truss beam of the horizontal curve section, the horizontal pushing in-place operation of the steel beam in the process of construction is avoided successfully, the construction process is simplified, the straddle construction of the cantilever of the long-span simply supported steel truss beam of the horizontal curve section can be greatly simplified, the stress is reliable, the construction is convenient, the operation is simple, temporary construction facilities and field workloads of the pier top are reduced, the construction progress greatly speeds up, the construction cost is saved, and the economic benefit is remarkable.
Owner:CHINA MAJOR BRIDGE ENERGINEERING +1

Combined support device of network frame and concrete and application method in underground engineering

The invention discloses a combined supporting device consisting of a net stand and concrete and an application thereof in the underground engineering. The net stand is composed of a plurality of horizontal, vertical, cable-stayed connecting pipe fittings connected by multidirectional joints, and an anchor rod and an anchor pile are connected with the net stand through a pad and nuts, and connected with surrounding rock at the other end, wherein the gap between the net stand and surrounding rock is filled with the concrete. The application comprises the steps of manufacturing of multidirectional joints and connecting pipe fittings, connection of steel bushing cylindrical joints and the net stand, hanging of steel net pieces between net stand and surrounding rock and filling of filling backboard bag with concrete or sprayed concrete after the installation of the net stand, and hanging of a flexible film pump at the inner side of the net stand to inject the concrete to form the net stand and concrete combined support. The invention is characterized by ready-to-install structure, simple use, low cost, good entirety and rational structure stress to co-load the ground pressure through the entirety formed by the net stand and surrounding rock. The invention is especially suitable for the tunnel support of bad grounds which contain water and feature quagginess and fractures and other complex stratums, and is widely used for the temporary or permanent support of subsurface engineering such as mine workings, traffic tunnels, water conservancy and national defense.
Owner:XIAN UNIV OF SCI & TECH +1
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