32 results about "Tension field" patented technology

The invention provides a method of extra-high voltage tension stringing, including the steps that: a flying powered parachute spreads out two first dyneema ropes; the two first dyneema ropes pull two second dyneema ropes; the two second dyneema ropes lead a guidance rope in a wire purchase tackle; by means of using line two (one-pull-four) mode, two guidance ropes are used for leading eight pulling ropes in the wire purchase tackle; a pulling field and a tension field are respectively provided with four two-rope pulling-tension integrated machines that synchronously roll eight pulling ropes and gradually change the eight pulling ropes for eight leads. Therefore, by adopting a method of eight-pulling-eight tension stringing to effectively decompose the traction force of eight leads on the pulling ropes, the stress on each pulling rope is less and the safety risk is reduced. Therefore, conventional pulling equipment can be adopted to meet construction requirements without changing for new pulling equipment.

The invention discloses a method for laying out a leading rope by a helicopter. The method comprises the following steps of setting a special-purpose high speed tension machine in a tension field; placing a leading rope bobbin on a bobbin support; the rope head of the leading rope is lead out through the special-purpose high speed tension machine and line pressing pulleys arranged on the ground. A guide rod type pulley is suspended on a line laying construction position of each base tower; the helicopter drags the rope head of the leading tope and flies over a preset leading rope laying channel. The helicopter flies over the tower so that the leading rope falls into the guide rod type pulley, and the helicopter flies to the next base iron tower. If the bobbin of the leading rope is about to run out, the helicopter hovers; and then the bobbin is changed into a new leading rope bobbin in the tension field, and the helicopter continues to perform flight working until the leading rope goes through the guide rod type pulleys of all the iron towers of a line laying segment. The helicopter flies to an anchor line field at the end of the line laying segment, slowly descends and anchors the leading rope to the ground. According to the invention, a lot of cooperation work by high altitude construction personnel can be reduced so as to greatly raise the security and the construction efficiency.

The invention discloses a 500kV compact power transmission line three phase bundle conductor breeze vibration simulation test platform. The platform is characterized in that: the platform comprises: a three phase bundle conductor traction field system, a three phase bundle conductor breeze vibration platform system and a three phase bundle conductor tension field system; through a reacting-force wall and a tension terminal steel framework, a three phase bundle conductor is erected and installed; then through a conductor breeze vibration testing machine, the three phase bundle conductor is vibrated; three phase bundle conductor breeze vibration in practical engineering is simulated; a breeze vibration fatigue test research, a breeze vibration prevention performance test research and a novel breeze vibration prevention hardware development and experiment research can be performed to the three phase bundle conductor and an integrated phase to phase spacer formed by a phase to phase spacer body and phase to phase spacer connection hardware. The platform has the following advantages that: the simulation is real and a result is reliable. And the platform has many other advantages.

The invention discloses a method and a device for spreading a conducting wire in a micro-tension overhead suspension way, which belong to a construction method and a construction device of overhead power transmission lines and the invention aims at providing a method for constructing the overhead power transmission lines with high efficiency and no power failure for spanning electric power lines and a device for realizing the method. The invention completes the work of erecting a conducting wire (13) on cross arms (10) by devices, such as a wire release disk (1), a tension machine (2), a wiredisk (3), a connector (8), a recovering disk (4), a tractor (5), an electric transporter (6), a hanging basket string and the like, wherein the wire release disk (1), the tension machine (2) and the wire disk (3) are arranged at the beginning end of a line, the connector (8) is connected between a guide rope (7) and a traction rope (9), the recovering disk (4) and the tractor (5) are arranged at the end of the line, the electric transporter (6) is fixed on the cross arms (10) and the hanging basket string is arranged between the cross arms (10). The invention does not need to arrange a middletraction field and a tension field, has the advantages of short construction period, small spreading tension, long wire release area section, little land occupation in construction and the like and isan advanced method for erecting the power transmission line.

The invention provides a prestressed steel plate shear wall capable of separating a tension field, and relates to the field of civil engineering. The prestressed steel plate shear wall capable of separating the tension field is a novel energy-consuming and buckling-restrained shear wall component. The technical problems that a diagonal tension field is formed after the traditional steel plate shear wall is stressed, steel plates are buckled, and components are damaged are solved. The prestressed steel plate shear wall capable of separating the tension field mainly comprises a steel plate wall, a prestressed cable, a perforated diagonal bracing, a perforated rib plate, a corner connector and a horizontal edge connector. The prestressed cable is separated from the steel plate wall, so that the prestressed cable bears all diagonal tension, the problem that the traditional steel plate wall is damaged due to the tension field is solved, after the cable is tensioned, buckling of the steel plate wall out of a plane can be limited, and the steel plate wall is protected well, and only needs to bear diagonal pressure and horizontal shear. By the method for separating the diagonal tension of the steel plate wall through the prestressed cable, the steel plate wall has features of good anti-seismic property and high ductility, and is a high-performance lateral force resistant component for a high-rise building structure or other structures.

The invention discloses a tension wire-laying method applies to ultra-high voltage electric wires: (1) four <second-line stretching all-in-one machines> are arranged in a hauling field as main hauling devices, four <second-line tension machines> are arranged in a tension field, two sets of wire-laying tackles that are independent to each other are hanged on the iron tower per phase; (2) in the earlier period 8 lead traction ropes are laid, every four traction ropes go through four auxiliary sliding wheels arranged on one set of wire-laying tackle and haul and lay an eight-multiple lead in theform of <one haul 1>, and realize synchronous laying of leads through four <second-line tension machines> and four <second-line stretching all-in-one machines> as hauling devices; and (3) when the eight-multiple lead reaches the wire-laying tackle, a trigger running board touches a trigger mechanism on the wire-laying tackle, which is used to make the auxiliary sliding wheel on the same tackle drop to the position lower than the main sliding wheel of the wire-laying tackle, and make the eight-multiple lead be synchronously laid by the main sliding wheels on the two sets of wire-laying tackles. The method can meet the tension wire-laying demand of ultra-voltage electric wires without long ton main hauling equipment.

The invention discloses a paying-off system, comprising at least one dragger used as main dragging equipment, at least two tension machines and at least one paying-off tackle, wherein the dragger is used for dragging three leads released by the two tension machines to pass three lead glide wheels of the paying-off tackle through a dragging rope released by the dragger. The invention also discloses a paying-off method. The method comprises the following steps: at least one dragger is arranged in a dragging field and used as the main dragging equipment; at least two tension machines are arranged in a tension field; at least one paying-off tackle is hung at each phase of an iron tower; the dragging rope is released by the dragger, and at least three leads are released by the two tension machines; and the three leads are dragged by the dragging rope passing a dragging glide wheel of the paying-off tackle to pass the three lead glide wheels of the paying-off tackle. Through the paying-off system and the method of the invention, the problem that the dragger has insufficient drag force and the problem of wasting resources caused by too much investment in the dragging equipment and the dragging rope can be improved when applied to a large-section leads.

The invention discloses a one-pulling-two expansion and construction process of a large-section lead. The expansion and construction process is characterized by comprising the following steps of: (1) construction preparation: performing crimping test on a lead and an earth wire, arranging a tension field space and a traction field space, and cleaning a construction channel; (2) hanging a tackle; (3) carrying out span construction; (4) carrying out tension stringing, expanding the earth wire and the lead, and carrying out temporary anchoring in time; and (5) crimping the lead, performing stringing, observing looseness, and lashing wires to complete the whole construction. According to the invention, the same-phase leads are guaranteed to have identical stringing tension, and the stringing construction quality is guaranteed; furthermore, the construction processes of stringing, tackle hanging, lead leading and traction rope expansion, lead expansion, stringing, accessory installation and the like are optimized, and the tension stringing construction efficiency is effectively improved; the manpower and time wastes are reduced, the required equipment quantity is small, the occupied area is small; and the one-pulling-two expansion and construction process has higher social economy.

The invention discloses a 500kV compact type electric transmission line three-phase bundled conductor galloping simulation test platform. The 500kV compact type electric transmission line three-phase bundled conductor galloping simulation test platform is characterized by comprising a three-phase bundled conductor traction field system, a three-phase bundled conductor galloping platform system and a three-phase bundled conductor tension field system. A three-phase bundled conductor is erected through a reaction wall and a tension end steel framework, a bundled conductor galloping testing machine exerts vibration on the three-phase bundled conductor, three-phase bundled conductor galloping in the actual engineering is simulated, and therefore galloping fatigue test research, galloping-prevention performance test research and novel galloping-prevention fitting development test research can be carried out on the three-phase bundled conductor and a whole inter-phase spacer composed of an inter-phase spacer body and an inter-phase spacer connecting fitting. The 500kV compact type electric transmission line three-phase bundled conductor galloping simulation test platform has the advantages of being real in simulation, reliable in result and the like.

The invention provides an assembly type shear wall comprising a shear wall body, a first energy dissipation plate and a second energy dissipation plate. The first energy dissipation plate and the second energy dissipation plate are arranged on the two sides of the shear wall body correspondingly and each comprise a web plate and a flange which are mutually perpendicular. The web plates of the first energy dissipation plate and the second energy dissipation plate are embedded on the two sides inside the shear wall body correspondingly. Connecting holes are formed in the flanges of the first energy dissipation plate and the second energy dissipation plate. The adjacent shear wall bodies are fixedly connected through connecting pieces in matched connection with the connecting holes. Energy is consumed through a tension field formed by an energy dissipation device after buckling at a joint of the shear wall; on the one hand, structural ductility and deformation capacity are strengthened effectively, and the anti-seismic performance of the assembly type concrete shear wall is improved; and on the other hand, the shear wall body, the energy dissipation plate and the second energy dissipation plate are designed in advance and processed in a prefabricate mode, wet operation is not conducted on the site, and assembly operation is mainly conducted, so that the operation amount is small, the mounting efficiency is high, and the construction cost is low.

The invention relates to methods for maintaining double-circuit lines, in particular to a method for replacing a single-circuit wire of common-tower double-circuit lines. A tension field and a traction field are arranged according to landforms, error climbing prevention safety measures are arranged on a tower, and corresponding safety measures are distributed in the traction field. The end portion of a new wire is connected with the end portion of an old wire through a snakeskin sleeve, and wing clamps are used in old wire strain section connection. The mode that the old wire and the new wire are in transition is adopted in the wire replacement process, that is, the wire is dragged through a tractor, tension stringing is adopted in the whole process, the traction field is used as a wire hanging end, the tension field is used as a wire tightening end for reversely dragging and tightening a conductor sag and hanging the wire, and iron tower accessories and corresponding hardware fittings are mounted after the wire is hung. The problem that the double-circuit lines need to be in the power failure simultaneously in the previous work of replacing the common-tower double-circuit wire is solved, and power supply reliability is greatly improved. An error climbing prevention isolating device is arranged on the common-tower double-circuit iron tower, and the method can be applied to the operation of replacing the wire and can be popularized to other common-tower double-circuit work.

The invention provides an oil-gas interface tension test method in a porous medium, comprising the following steps: A, performing a displacement experiment in a sample formed by the porous medium to obtain an oil-gas sample; and B, performing the chromatographic analysis on the obtained oil-gas sample to obtain an oil-gas chromatographic component and obtaining the oil-gas interface tension in the porous medium by the oil-gas chromatographic component. The oil-gas interface tension test method has the following advantages: 1, the natural porous medium is used as a test medium to really reflect the oil-gas interface interaction rule under the oil reservation condition; 2, a stratum oil dissolubility calculation formula is derived using the Peng-Robinson equation of state (PR-EOS) in combination with dissolubility theory in the calculation method and applied to the interface force tension calculation; 3, the direct, real interface tension data is provided to design and optimize a schemeof an oil reservation engineering project; and 4, the tension on different cross sections of the natural porous medium is researched to make it possible to research the change in the interface tension field in the natural porous medium from now.

The invention belongs to an aircraft structure strength calculation technology, and particularly relates to an airfoil without stringers and ribbed webs and a strength calculation method of the airfoil. The airfoil without the stringer and the rib web plate adopts the design without the stringer and the web plate, and comprises a front beam, a middle beam, a rear beam, a rib edge strip and a skin.According to the method for calculating the strength of the airfoil without the stringer and the rib web, the bending moment and the shearing force of the airfoil are concentrated and borne by the front beam, the middle beam and the rear beam, the torque of the airfoil is borne by a closed box section composed of the skin and the three beams, and the strength of the airfoil is calculated according to a load transmission path, and the skin is calculated according to a curved plate tension field. The structural arrangement scheme without stringers and rib webs is adopted, the number of parts, the manufacturing cost and the structural weight can be reduced, meanwhile, the provided airfoil strength calculation method can be used for guiding design and strength calculation of airfoil structures of the type, and the large practical application value is achieved.

The invention relates to a built-in perforated steel plate composite shear wall, which comprises a perforated steel plate, reinforcing meshes are arranged on two sides of the plate surface of the perforated steel plate, a plurality of holes are uniformly distributed in the plate surface of the perforated steel plate, tie bars are connected in the holes in a penetrating manner, two ends of each tie bar are respectively connected with the reinforcing meshes on two sides, the tie bars, the perforated steel plates and the reinforcing meshes form a structural framework, and the structural framework is subjected to one-time pouring in a cast-in-place concrete mode till the two sides are filled to form concrete slabs. The distribution of a tension field is adjusted mainly through the perforated steel plates, the cooperative work capacity of the steel plate tension field and a concrete plate pressure field is enhanced, the lateral stiffness, energy dissipation capacity and ductility of the combined shear wall are greatly improved, meanwhile, the defect that the pouring process of a traditional stud combined shear wall is tedious is overcome, the construction efficiency is improved, the structure is simple, cost is low, and construction is convenient and efficient, performance is remarkably improved, and the built-in perforated steel plate composite shear wall is suitable for lateral resistance and energy consumption improvement of engineering structures.

The invention discloses a construction method of pulling and putting a guide rope by a helicopter without shipping stoppage, and relates to the field of the construction of pulling and putting the guide rope by the helicopter. Due to the rapid development of seaborne shipping industries and the multiplication of ship density, the contradiction between the shipping stoppage stringing construction and the water transportation becomes increasingly serious. The construction method comprises the steps that a tackle for paying-off is suspended on a crossing tower; a main sling of the helicopter is connected to the guide rope and a heavy hammer through a triangular yoke plate; a high-speed tension machine and a paying-off tripper car are arranged in the tension field, and the head of the guide rope is connected to a temporary anchor rope; the guide rope is connected to the triangular yoke plate, and the helicopter pulls the guide rope to fly with tensile force; the guide rope is maintained ata safe distance from the sea surface in the pulling and putting process; the helicopter successively unfolds and puts the guide rope into a rope groove of the tackle for paying-off over the two crossing towers; and the helicopter flies to the anchor rope field, and unhooks and anchors the guide rope on the ground, then an electric hook breaks away from the guide rope, and the helicopter suspendsthe heavy hammer to fly away. The method realizes the successful putting and putting construction of the guide rope under the condition of no shipping stoppage.

The invention provides a construction method of a carbon fiber composite core wire, and belongs to the technical field of carbon fiber composite core wires. The construction method comprises the following steps: S1, performing tension pay-off on the wire: a, enabling a traction field and a tension field machine tool to enter the field in place; b, unfolding a traction rope; c, unfolding a pullingrope; d, under the action of stretching equipment, performing tension pay-off through the traction rope; S2, tightening the wire: temporarily anchoring the wire, and then connecting or continuing thewire; and S3, performing balanced wire hanging: drawing marks, and performing balanced wire hanging. The steps of paying off, tightening, hanging and the like in the construction process of the carbonfiber composite core wire are optimized and improved, and effective technical guarantee is provided for large-area application and popularization of the novel composite material wire in the future.

The invention discloses a high-efficiency carbon fiber pre-carbonization process and equipment. According to the main chemical reaction and engineering characteristics of thermally-stabilized fiber pre-carbonization, the pre-carbonization reaction is completed by two states; each of the stages has different temperature fields and tension fields to better provide pre-carbonization thermo-chemical reaction conditions. Moreover, different Muffle furnace hearths and respective waste discharge systems are designed according to the concentration and the discharge quantity of discharge materials at different pre-carbonization reaction stages as well as the pollution to fibers and the corrosion to a Muffle furnace by the discharge materials, so that the purpose of high-efficiency pre-carbonizationis realized.

The invention discloses a prefabricated two-side connection steel grid shear wall convenient to replace. The steel grid shear wall comprises a steel grid shear wall body arranged between frame columnsand frame beams, wherein the steel grid shear wall body is provided with a rectangular frame and a steel grid structure connected with the rectangular frame; and the top and the bottom of the rectangular frame are connected with the corresponding frame beams respectively, the two sides of the rectangular frame and the corresponding frame columns are arranged in a spaced mode, and holes are formedbetween the frame columns and the side edges of the rectangular frame which is arranged with the frame columns in the spaced mode. According to the prefabricated two-side connection steel grid shearwall convenient to replace, the adverse effect of a tension field of a four-side connecting steel plate shear wall on the frame columns can be avoided, and the requirement for door and window openingarrangement in a residential building is met; factory prefabrication can be completely realized, and bolt connection is adopted on site, so that the problems of heavy field welding workload, severe field welding deformation and the like of a stiffened steel plate shear wall are solved; and the weight of components is reduced, so that transportation and installation are convenient, the constructionprogress is accelerated, and the repair period is shortened.

The invention discloses a multi-tackle arrangement method for a steering field, comprising the following steps: step 1, determining the position of the steering field according to the positions of a traction field and a tension field, and measuring a steering angle alpha; step 2, determining the number of tackles in the steering field according to the steering angle alpha; and step 3, determiningthe positional relationship of each tackle according to the steering angle alpha and the number of tackles. After the steering angle is determined, the number of tackles can be quickly determined andthe relative position of each tackle can be further determined, so that when the steering field is arranged, only a small number of individual tackles need to be carried, which significantly reduces the transportation and installation costs. The steering field can be arranged flexibly and normatively according to the actual steering angle. On the premise of meeting the requirements of special terrains in mountainous areas, the envelop angles of the tackles are equal, and the tackles are stressed uniformly, so that the operational safety of the steering field is improved, and the tackles and cables are effectively protected.

The invention discloses a method for laying out a leading rope by a helicopter. The method comprises the following steps of setting a special-purpose high speed tension machine in a tension field; placing a leading rope bobbin on a bobbin support; the rope head of the leading rope is lead out through the special-purpose high speed tension machine and line pressing pulleys arranged on the ground. A guide rod type pulley is suspended on a line laying construction position of each base tower; the helicopter drags the rope head of the leading tope and flies over a preset leading rope laying channel. The helicopter flies over the tower so that the leading rope falls into the guide rod type pulley, and the helicopter flies to the next base iron tower. If the bobbin of the leading rope is about to run out, the helicopter hovers; and then the bobbin is changed into a new leading rope bobbin in the tension field, and the helicopter continues to perform flight working until the leading rope goes through the guide rod type pulleys of all the iron towers of a line laying segment. The helicopter flies to an anchor line field at the end of the line laying segment, slowly descends and anchors the leading rope to the ground. According to the invention, a lot of cooperation work by high altitude construction personnel can be reduced so as to greatly raise the security and the construction efficiency.

The invention discloses a connected node of a horizontal member and a foundation of a thin steel-plate shear wall, which belongs to the field of architectural construction engineering, and comprises a horizontal member (1) and a foundation of a thin steel-plate shear wall. The connected node disclosed by the invention is characterized in that anchoring members (2) which are uniformly arranged and welded at a certain interval along the lower length centerline of the horizontal member (1) at the bottom layer are vertically buried into the foundation, a shear key (3) is respectively welded on the front and rear side surfaces (parallel to the horizontal member (1)) of the anchoring members (2), and the shear keys (3) are uniformly arranged at a certain interval. The technical problem solved by the invention is to provide a new connected node, and the node greatly enhances the anchoring capacity (namely, pullout resistant capacity) of the anchoring members (2), thereby effectively balancing a tension field generated by a bottom thin steel-plate shear wall.

The invention discloses a fastener load calculation method after a composite loaded wall plate enters a tension field, the composite loaded wall plate comprises a rectangular framework composed of stringers and vertical ribs, the rectangular framework is coated with a skin, and the skin is connected with the rectangular framework through fasteners; the method comprises the following steps: establishing a coordinate system by taking the center of a wallboard as an original point; calculating diagonal tensile stress and pure shear stress components generated by shear stress after the wallboard enters a tension field stress state; based on the diagonal tensile stress and the pure shear stress component, calculating a stress state generated by nominal shear stress after the wallboard enters a tension field through angle transformation; superposing the nominal normal stress of the wall plate, and calculating the final stress state of the wall plate after entering the tension field; and respectively calculating the loads of the fasteners in the x direction and the y direction of the wallboard. The defect that a traditional calculation method theoretically does not consider the influence of the diagonal tension angle of the tension field on the load resultant force of the fastener is overcome, and the theoretical calculation accuracy of the load of the fastener after the wallboard enters the tension field is improved.

The invention discloses an aloft work platform for line construction. The aloft work platform comprises a rectangular frame which is formed by welding section bars, wherein an insulating base plate is arranged at the bottom of the rectangular frame; a protective guard is arranged on each of four side walls; and a plurality of connecting plates are uniformly arranged on the top of the rectangular frame. Compared with the prior art, the aloft work platform solves the problems of safety, construction period and cost during construction of an electric transmission line; the aloft work platform is used for performing aloft crimp connection construction, a plurality of strain sections are communicated with one another to perform tension stringing, and a tension field and a traction field do not need to be provided for each strain section, so that the transportation cost is reduced, the construction period is shortened, and the safety risk is reduced at the same time.

The invention discloses a steel plate shear wall structure with a semi-wrapped concrete combination column and an anchoring structure thereof. The steel plate shear wall structure can effectively provide an anchoring effect of an edge constraint frame of the steel plate shear wall structure on a built-in steel plate, so that a sufficient and uniform tension field is formed, the anti-seismic property of the structure is fully exerted, the bearing capacity of the structure is higher, the hysteretic behavior is more stable, and assembling is easy. The steel plate shear wall structure comprises two double-C-channel-steel combined section columns, two double-C-channel-steel combined section beams and a built-in steel plate; each of the double-C-channel-steel combined section columns and each of the double-C-channel-steel combined section beams comprises two pieces of C-shaped channel steel arranged oppositely; the edge of the built-in steel plate is clamped between the two pieces of C-shaped channel steel arranged oppositely; the edge of the built-in steel plate is anchored and connected with the C-shaped channel steel through high-strength bolts; and concrete is poured into steel grooves of the two pieces of oppositely-arranged C-shaped channel steel of the double-C-channel-steel combined section columns, so that the semi-wrapped concrete combination column is formed.

The invention discloses an accurate calculation method for dynamic simulation of tension pay-off. Firstly, a draw-tension calculation model with the outlet tension of a tension machine as an independent variable is established, and a corresponding pay-off curve is automatically drawn in a cross-sectional view. Through the pay-off curve and The graphics of the cross-sectional diagram are merged, and the starting coordinates of the pay-off section are set to coincide with the corresponding coordinates in the cross-sectional diagram, so that the drawing of the laying-out operation can be drawn; and then using the drawing of the lay-out operation, the position of the pallet is adjusted base by base from the tension field side, Adjust the running plate to the nth base block in turn, and repeat the above process; realize the dynamic simulation of the pulling force and axial tension of the entire pay-off section; The outlet tension of the single sub-conductor of the machine is an independent variable, and the stress matrix table of the wire is made to accurately reflect the stress status of each part, and it is more convenient to guide the on-site construction.

The invention discloses a tension field arrangement device for wire replacement of a one-way circuit in a double-circuit line. The tension field arrangement device comprises a wire plate, a wire ground pulley, a tensioner, a tension ground wire, a ground grid and ground anchors, as well as a wire, wherein the wire plate and the tensioner are fixed on the ground through the ground grid and the ground anchors; the tension ground wire is connected with the tensioner and the ground; the wire is led out from the wire plate, and passes the tensioner to be connected with a wire power; the wire round pulley is connected with the wire and the ground. By the adoption of the device, a problem that simultaneous power cut is required when wires of the one-way circuit in the double-circuit line on the tower are replaced in the prior art is solved, and the reliability of power supply is greatly solved.