32 results about "Tension field" patented technology

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 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 scheme of 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 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 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 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 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 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 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.

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.