93results about How to "Easy on-site assembly" patented technology

The invention provides a multi-light position multi-dimensional tunnel lighting mode which is composed of a plurality of dimensional lighting components, which are respectively the low-light position reverse lighting component, the homodromous lighting component, the transverse lighting component and the high-light position reverse lighting component. All the lighting components are independent on lighting functions, light color scope, lighting direction and lighting space, and can be individually adjusted. Each component is provided with a special light source and a light which are installed at low position and independently run based on the task characteristics, and the special demands on pavement lighting, space lighting and tunnel lighting can be met. The efficiency can be maximized in each task, so that the total lighting can be comprehensively optimized. With the adoption of the multi-light position multi-dimensional tunnel lighting mode, the shortcomings of the traditional tunnel lighting mode can be overcome; the light source and the light which have different functions perform relevant functions, so that a series of problems of tunnel lighting can be effectively solved, and the lighting efficiency can be greatly improved. The multi-light position multi-dimensional tunnel lighting mode is independently applied and developed based on the property of the low power and high light efficiency light source; the lighting mode of traditional tunnel light is completely removed; and the mode of simply replacing HPS (High Pressure Sodium) and MH (Metal Halide) lights with the LED lights can be changed.

The invention discloses an anti-buckling steel plate seismic shear wall provided with stiffening ribs. The anti-buckling steel plate seismic shear wall comprises a steel plate wall, horizontal stiffening ribs, vertical stiffening ribs, steel columns and steel girders, wherein the steel plate wall is arranged in a frame formed by the steel columns and the steel girders, and the multiple horizontal stiffening ribs are uniformly fixed on two side wall surfaces of the steel plate wall at vertical intervals and horizontally welded on the steel plate wall; the multiple vertical stiffening ribs are fixed between the horizontal stiffening ribs at horizontal intervals and are vertically arranged, and upper ends and lower ends of the vertical stiffening ribs are welded with the horizontal stiffening ribs; a gap is reserved between each vertical stiffening rib and the steel plate wall. According to the anti-buckling steel plate seismic shear wall provided with the stiffening ribs, overall buckling and local buckling of the steel plate wall can be prevented, so that the steel plate wall can only yield, and the shear capacity and the severe earthquake energy dissipation performance of the steel plate wall are improved; the anti-buckling steel plate seismic shear wall is simple in structure and reasonable in stress, can bear horizontal force under the action of the earthquakes, and is convenient to construct and high in degree of industrialization.

The invention provides a buckling-resistant supporting element bound by four square pipes, belonging to the field of structural engineering. The supporting element consists of a cross-shaped internal core element and an external binding component. The cross-shaped internal core element is welded by three flat steel plates, and the surface of the cross-shaped internal core element is glued with hard rubber. The external binding component is bound by four square pipes with a plurality of extending steel plate bands, wherein each square pipe is oppositely welded by two equal angle irons with different sizes or four flat steel plates, and each square pipes is hollow or poured with the concrete. The binding effects among the square pipes are realized by the means that the extending steel plate bands are connected with each other by a plurality of high-strength bolts. The high-strength bolts are penetrated through the extending steel plate bands and a plurality of steel cushion plates and rubber spacers which are arranged among the extending steel plate bands, so that the four square pipes are connected with each other into a whole body. Meanwhile, a gap with 1mm-2mm is kept between the surface of the external binding component and the surface of the cross-shaped internal core element, and the gap is filled with the hard rubber which is glued at the surface of the cross-shaped internal core element, thereby meeting the requirement that the cross-shaped internal core element is pressed to be inflated.

The invention discloses a flexible direct-current power transmission converter valve tower based on voltage source converters. A vertical structure is adopted, and the whole flexible direct-current power transmission converter valve tower is supported on the ground. The valve tower comprises at least one valve layer, the valve layers are arrayed in the vertical direction and provided with independent water distribution pipelines, each valve layer comprises at least one valve section, the valve sections in each valve layer are arranged in a linear mode, each valve section comprises a plurality of flexible direct-current power transmission converters for completing voltage conversion, and all the converts in the valve tower are connected in series. The converter valve tower is compact in structure, good in electrical performance and mechanical performance, and good in running stability.

The invention relates to a rapid design and management method for spacecraft device installation fasteners. According to the requirements for the selection range of all kinds of spacecraft device installation standard fasteners, the selection range of the spacecraft device installation fasteners is determined, a spacecraft device installation standard fastener database is established, and the installation forms of the spacecraft device installation fasteners are summarized; according to the parameters including device installation apertures, the depths of mounting holes, the installation forms, the types of the fasteners and the thicknesses of mounting plates, an algorithm for basic parameters of the device installation fasteners is established, a fastener data sharing platform based on a three-dimensional light-weight model is established with mechanical interface information of a stand-alone device as a data foundation for automatic calculation of device fastener parameters, automatic matching of specifications, parametric design and automatic assembly of the three-dimensional light-weight model and visual inspection of fastener design results. As a result, the working efficiency of fastener design is improved, and the uniqueness and correctness of data are guaranteed.

The invention discloses a double-rectangular tube buckled assembled buckling-restrained bracing member and belongs to the field of structural engineering. The bracing member consists of a linear inner core member and a peripheral restraining member, wherein the linear inner core member adopts a low-yield point high-ductility flat steel plate and hard rubber is adhered to the surface of the surface of the linear inner core member; the peripheral restraining member is bound by two restrained square steel tubes with extended steel plate strips; the binding function is realized by performing high-strength bolted connection on the square steel tubes; and a high-strength bolt passes through bolt holes on the extended steel plate strips of the square steel tubes, a steel plate arranged between the square steel tubes and a plurality of rubber gaskets so as to connect the two square steel tubes into a whole. The thickness of the steel plate is greater than that of the linear inner core member, and by adjusting the thickness of the rubber gaskets, a gap of 1-2mm is kept between the surface of the peripheral restraining member and the surface of the linear inner core member under the pretightening force of the high-strength bolt. The gap is filled by the hard rubber adhered to the surface of the linear inner core member so as to meet the requirement of expanding under pressure on the linear inner core member.

The invention discloses a low-lighting-position and multidimensional lighting street lamp. The street lamp is lighting equipment designed according to 'a low-lighting-position and multidimensional road lighting mode' invented by the inventor. The low-lighting-position and multidimensional lighting street lamp comprises a lamp body, a light source, a fixing device and a pipeline. Lighting light sources for different purposes and the lamp are integrated, and the light sources and circuits are placed in a hollow lamp body to form the integrated street lamp. Problems of glare and invalid lighting are solved, and energy consumption is greatly reduced. The conventional mainstream snake-head lamp lighting mode is eliminated, and a simple replacement mode of replacing other light sources by using light-emitting diode (LED) lamps is also eliminated. Because the low-power LED light source is used for lighting in a dispersion manner, longitudinal uniformity degree is increased, and the problem that the conventional high-power LED street lamp is poor in heat dissipation is solved. Compared with the traditional street lamp, the low-lighting-position and multidimensional lighting street lamp has the advantages that integration level is high, the lamp is convenient to assemble and disassemble in fields, daily maintenance is facilitated, and a lamp pole is not required; and the one-time investment and the running cost of the low-lighting-position and multidimensional lighting street lamp are greatly reduced compared with those of the conventional mainstream road lighting system.

The present invention provides a prefabricated fabricated structure system and an assembling method thereof. The prefabricated fabricated structure system can be used for a steel structure, a reinforced concrete structure and a wood structure. When used for the steel structure, the prefabricated fabricated structure system comprises steel structure joints and related elements. The steel structurejoints and related elements further comprise beam-column connection sleeves, vertical columns, main beams and fixed steel plates for the main beams. The beam-column connection sleeves comprise first box-shaped steel tubes and first C-shaped sleeves vertically extending from the outer surfaces of the first box-shaped steel tubes. First wedge-shaped concave parts are arranged at the ends of the upper and lower flanges of the first C-shaped sleeves. The vertical columns are provided with column connection ends which are inserted into the first box-shaped steel tubes. The main beams are provided with main beam connection ends which are inserted into the first C-shaped sleeves. First wedge-shaped protruding parts matched with the first wedge-shaped concave parts of the first C-shaped sleeves ina mortise and tenon joint mode are arranged on the two sides of the fixed steel plates for the main beams. The application range of the beam-column connection sleeves of the prefabricated fabricatedsteel structure system can be further extended from the steel structure to the reinforced concrete structure and the wood structure.

The invention discloses a sectional type blade for a large wind driven power generator. The sectional type blade comprises a blade root and a blade tip connected with the blade root, wherein the blade root comprises a barrel body, a blade-shaped framework and a cover; the blade-shaped framework is arranged on the outer circumferential side of the barrel body and connected with the barrel body; and the cover is covered outside the blade-shaped framework and connected with the barrel body. Due to the structure, the sectional type blade has the advantages of convenience in manufacturing and conveying and low cost. The invention also discloses the large wind driven power generator which comprises the sectional type blade and has the same advantages. Two independent blade pitch variation control systems are adopted in the large wind driven power generator, so that the running reliability and the safety of the wind driven power generator are improved greatly due to the redundancy design.

The invention relates to a high-power electrical electronic rectification and inversion apparatus, and specifically relates to a thyristor converter valve assembly applicable in high-voltage direct-current power transmission, direct-current ice melting equipment, SVC, etc. The thyristor converter valve assembly comprises valve modules and corresponding reactors. The valve module includes a frame. The valve modules and the reactors are fixedly mounted on a rectangular frame-type base in a detachable manner and distributed along the left-right direction of the base. The base includes a front border, a rear border, a left border, a right border and supporting beams bridging the front border and the rear border. The lengths of the left and right borders are smaller than that of the front and rear borders. The left and right borders are made of aluminium section material. One of the front and rear borders is made of aluminium section material, while the other one is made of insulation material. The thyristor converter valve assembly has the advantages of convenience for both transport and on-site assembly.

The invention relates to a coupled modular fabricated steel structure building. The steel structure building is composed of an integrated room module units, coupled units and accessory units. All theunits are prefabricated in a factory and transported to a site for assembling, and moreover, connection in the site assembling process is all achieved by adopting bolts. The standard and modular integrated room module units are assembled by adopting the coupled units with the sizes easily adjusted, so that the building layout is more flexible, and meanwhile, the problems of structural member repetitive wasting, difficult connection, complex force transfer and the like caused by existing modular building stoplogs, parallel columns and double plates are solved. According to the coupled modular fabricated steel structure building provided by the invention, 70%-80% of the building workload can be completed in the factory, the building is a highly industrialized prefabricated fabricated building, the site assembling connection all adopts the bolts, site welding operation is avoided, the site operation period is greatly shortened, labor is saved, and water, air and noise pollution of site construction to the environment is reduced.

The invention discloses a prefabricated reinforcement concrete block T-shaped rib anti-buckling steel plate earthquake resistant wall which comprises a steel plate wall, prefabricated reinforced concrete blocks, T-shaped ribs, steel columns and steel beams, wherein the steel plate wall is arranged inside a frame formed by the steel columns and the steel beams; the T-shaped ribs are uniformly fixed in parallel at intervals on two side wall surfaces of the steel plate wall in the horizontal or vertical direction; T-shaped rib flanges are parallel to the steel plate wall; T-shaped rib webs are perpendicular to the steel plate wall; the end surfaces of the T-shaped rib webs are welded with the steel plate wall; preserved T-shaped rib flanges are arranged on edges where the steel beams or the steel columns are connected with the steel plate wall; a space encircled by the T-shaped rib flanges, the T-shaped rib webs, the preserved T-shaped rib flanges and the steel plate wall is filled with the prefabricated reinforced concrete blocks. Under the action of an earthquake, the prefabricated reinforcement concrete block T-shaped rib anti-buckling steel plate earthquake resistant wall can bear the horizontal force, overall buckling and partial buckling of the steel plate wall can be prevented, the steel plate wall only has yield, the shear capacity, the anti-bending pressure resistance and the great earthquake energy consumption of the steel plate wall are improved, and the wall is simple in structure, reasonable in stress, convenient to construct and high in industrial degree.

The invention discloses a portable emergency water treatment system applicable to a victim settlement point in a disaster area. The portable emergency water treatment system is provided with a portable draw-bar box; universal wheels are mounted at the bottom of the portable draw-bar box; a raw water tank, a domestic water tank, an ultrafiltration membrane purifier, an in-depth purifier, a reverse osmosis water purifier and a disinfection device are arranged in the draw-bar box; the raw water tank is connected with the ultrafiltration membrane purifier; the ultrafiltration membrane purifier is connected with the in-depth purifier; the in-depth purifier is connected with the reverse osmosis water purifier; the reverse osmosis water purifier is connected with the disinfection device; and the disinfection device is connected with the domestic water tank. The portable emergency water treatment system is applicable to treatment of a variety of water sources and water qualities and ensures that the water quality of drinking water in the victim settlement point reaches the standard; the water purification modules are separately mounted in the draw-bar box which is portable, so the portable emergency water treatment system can be brought to the disaster area in time; and the portable emergency water treatment system does not need addition of reagents, is applicable to treatment of a variety of water sources and water qualities, can ensure that the water quality of drinking water in the victim settlement point reaches the standard, is assembled and degugged on site and simple to operate and maintain, and has high reliability.

The invention provides an anti-galloping damping device for a transmission line. The device comprises a vacuum pipe, a pendant and a cross force transfer block, wherein movable magnetic steel is placed between upper magnetic steel and lower magnetic steel which are fixed in the inner cavity of the vacuum pipe made of a non-magnetic material; the upper magnetic pole and the lower magnetic pole of the movable magnetic steel are the same as the lower magnetic pole of the upper magnetic steel and the upper magnetic pole of the lower magnetic steel; the structure of the pendant is characterized inthat an arc riser is fixedly connected on an open-loop clamp; the structure of the cross force transfer block is characterized in that the lower end of the riser is fixedly connected with a transverse plate, a left baffle and a right baffle are fixedly connected on the transverse plate, and a horizontal shaft is fixed on the upper part of the riser; and the vacuum pipe is clamped in the open-loopclamp of the pendant, the pendant is hung on one end of the horizontal shaft through a hanging hole, and the other end of the horizontal shaft is used for fixing a lead wire or a conductor spacer. The device can prevent the lead wire from swinging left and right and moving up and down, and has the characteristics of simple structure and convenient use.

The invention discloses a light inner wall and steel beam connection structure with self-tapping screws. The connection structure comprises a steel beam, an L-shaped clamping set and the self-tapping screws. The L-shaped clamping set comprises a first L-shaped clamp and a second L-shaped clamp. One end of the long edge of the first L-shaped clamp is connected with the steel beam through one self-tapping screw, the other end of the long edge of the first L-shaped clamp and the long edge of the second L-shaped clamp are connected with the steel beam through the remaining self-tapping screws, and a space is formed between the short edge of the first L-shaped clamp and the short edge of the second L-shaped clamp and used for containing a light inner wall board. Construction is convenient and fast, on-site assembly is easy and convenient, wet construction and pollution are avoided, and constructing site positioning is accurate; the connection structure can be directly completed in a factory, on-site workloads are reduced, construction efficiency is greatly improved, and industrial production can be easily achieved; connection is firmer, a lower flange of the steel beam looks more attractive, and the light inner wall and steel beam connection structure is suitable installing light inner walls and body structures of a multi-rise and high-rise steel structure building and is wide in adaptability.

The invention belongs to the technical field of building technologies, and particularly discloses an assembly type light partition wall batten connecting device adopting double-dovetail connection. The connecting device comprises connecting grooves correspondingly formed in the edges of light partition plates and connecting pieces used for connecting the light partition plates together. The outer ends of the connecting grooves are open, the inner diameter of the connecting grooves is smaller than that of the inner ends of the connecting grooves, and therefore a dovetail-shaped structure with two pressing inclined faces is formed. The connecting pieces are sleeved with the connecting grooves in a matched mode and can press the pressing inclined faces, and the light partition plates are made to get close to each other. The operation difficulty is greatly lowered, installation can be basically completed by 1-2 persons, the construction difficulty coefficient is low, the construction time, the construction workload and the like can be greatly reduced, the construction efficiency is improved, and meanwhile secondary dismounting can be easily achieved.

The invention discloses a connecting structure of a steel structure column and a steel structure beam. The connecting structure comprises a second beam body, a connecting steel plate, first beam bodies and a column body, wherein the first beam bodies are installed on the two sides of the column body, and fixing steel plates are fixed to the sides, close to the column body, of the first beam bodies; the fixing steel plates are connected with the column body through first fixing bolts, and the column body is fixedly connected with the central positions of one sides of the fixing steel plates through fourth fixing bolts; carbon steel reinforced layers are arranged in the side walls of the second beam body, the first beam bodies and the column body, and rubber pressure resistance layers are arranged on the two sides of the carbon steel reinforced layers; and teflon corrosion resistance layers are coated on the outer sides of the second beam body, the first beam bodies and the column body.According to the connecting structure of the steel structure column and the steel structure beam, the column body, the first beam bodies, steel angles, the fixing steel plates, the first fixing bolts,third fixing bolts, and the fourth fixing bolts are installed to facilitate the fixed connection between the first beam bodes and the column body, and the tight connection is not prone to loosing.

A prefabricated high-voltage cable terminal is disclosed that includes shell, insulator, equal pressure cover and educing conductor, the insulator includes main insulator and additional insulator, the main insulator has a center hole, the educing conductor connects with the core of the cable, and the connective part is in the shield layer of high voltage, the root of main insulator has root electric stress control part, and the upper electric stress control part is mounted on the top of main insulator, the prefabricated whole structure consists of main insulator, outer insulator, high voltage shield layer, root electric stress control part and top electric stress control part. The invention strikes out the insulator and the electric stress control part as a whole, the combined part between the insulator and the cable noumenon is reduced greatly, and the assembling is very easy, and guarantees the mechanical intensity, and the capacity structure of the combined insulator or the stress wimble structure can improve the reliability, and it can control the distribution of electric potential equally.

The invention belongs to the field of building outdoor self-rescue escape, and relates to a single-climbing aluminum alloy folding outdoor escape ladder. A foldable inlet slow step pedal is hinged between an inlet wall-attached frame and the bottom of an inlet protective frame in an entry unit, a ladder unit comprises an upper ladder unit and the lower ladder unit, the upper ladder unit comprisesan upper ladder wall-attached frame and an upper ladder protective frame, the upper ladder wall-attached frame is fixedly installed with an upper folding ladder on the left or right side, a foldable ladder slow step pedal is hinged at the bottoms of the upper ladder wall-attached frame and the upper ladder protective frame, the lower ladder unit is fixedly installed on the upper ladder wall-attached frame and the upper ladder protective frame of the gap formed between the inlet slow step pedal and the ladder slow step pedal, the lower ladder unit comprises a lower ladder wall-attached frame installed with a lower folding ladder, and a stair protective net. The single-climbing aluminum alloy folding outdoor escape ladder solves the problems of complicated escape route setting of the existing outdoor escape ladder, poor anti-theft, inconvenient assembly and disassembly, and inability to achieve structure linkage trigger opening.

The invention discloses a fabricated prestressed high-strength concrete pavement. The fabricated prestressed high-strength concrete pavement comprises two or more single plates, prestressed tendons, prestressed anchorage devices and fabricated parts. A veneer is made of high-strength concrete, thickness of the veneer is 6-10 cm, transverse and longitudinal crossed prestressed tendon hole channelsare formed in the veneer, and bent hole channels are formed in the crossed points; more than two veneers are mutually inserted along the transverse direction and / or the longitudinal direction, the prestressed tendons are arranged along a center line of the veneer body and are inserted into corresponding prestressed tendon ducts, the prestressed tendons are in a transverse and longitudinal crossedstate in space, and a distance between every two adjacent transverse or longitudinal prestressed tendons is 1-3m, the prestressed tendons extend out of the end single plates and then are anchored andfixed through the prestressed anchorage devices to form assembling and splicing units. And more than one assembling and splicing unit is connected through assembling pieces to form a pavement. The fabricated prestressed high-strength concrete pavement is advantaged in that the thickness of a pavement slab is reduced, and on-site rapid assembly can be realized.

The invention relates to a novel bamboo-imitated landscape guardrail, which is characterized by comprising upright posts, connecting elements, cross beams, small rod elements, buckle covers and self-plugging rivets, wherein the upright posts, the cross beams and the small rod elements are hollow bamboo-joint-imitated structure metal pipes; the upright posts and the connecting elements are connected through screw bolts and blind rivet nuts arranged on the upright posts; the cross beams are inserted into the opening ends of the connecting elements and are fixed through the self-plugging rivets; the small rod elements are distributed along the cross beams for fixed connection; and the upright post buckle covers are arranged on the tops of the upright posts. The upright posts and the cross beams are assembled and fixed by the connecting elements made of die-casting aluminum alloy through the blind rivet nuts, the screw bolts and the self-plugging rivets; the welding is not needed; the in-site assembling is convenient; and the imitating ecological effect of the landscape guardrail is enhanced through the upright posts, the cross beams and the small rod elements adopting the bamboo-joint-imitated structures.

The invention relates to a full-open type hinge device for a cabinet. The full-open type hinge device comprises a frame positioning component and is characterized in that a main turnover positioning side is arranged at one end of the frame positioning component, and a linkage rotating shaft is arranged at the other end of the frame positioning component; meanwhile, a door plate connecting block is connected to the linkage rotating shaft, and an auxiliary turnover positioning side is distributed on the door plate connecting block; and linkage positioning components are distributed on the main turnover positioning side and the auxiliary turnover positioning side. Therefore, depending on an overlapping area and an auxiliary containing groove, 180-degree smooth opening of a door body is achieved. When the door body is closed, the overlapping area cannot appear, and tight combination of the door body and the cabinet is achieved. Through cooperation of clamping grooves and screws, proper adjustment can be carried out in the mounting period, and the better matching tightness degree is ensured. In addition, the design of reserved holes is adopted, daily using and maintenance are facilitated, and tedious whole dismounting is avoided. The full-open type hinge device is simple in structure, and manufacturing and field assembly are easy.

The invention relates to a connector for connecting an assembly type steel plate shearing wall and a steel beam. The connector for connecting the assembly type steel plate shearing wall and the steel beam is characterized by comprising a steel frame beam (1), a first double-fishplate connector (2), a second double-fishplate connector (3) and the steel plate shearing wall (4). The connector has the advantages of being high in connecting strength, more reliable in connection and the like.

The invention relates to a profile part and an equipment cabinet with the profile part. The profile part comprises a profile. The profile comprises a profile body and a fifth lateral plate, wherein the profile body is defined by a first lateral plate, a second lateral plate, a third lateral plate and a fourth lateral plate, the first lateral plate and the second lateral plate are opposite, the third lateral plate and the fourth lateral plate are opposite, and the fifth lateral plate is arranged to outwards extend in the mode of being perpendicular to the first lateral plate. The fifth lateral plate and the fourth lateral plate are located on the same lateral side of the first lateral plate. The fifth lateral plate is longitudinally and respectively provided with a plurality of first connecting holes. By means of the profile, the profiles of a machine frame of the equipment cabinet can be universal, and the material preparing risk is reduced. As for equipment cabinets in different sizes, requirements can be met only by cutting out portions with the corresponding lengths. The first connecting holes are formed in the fifth lateral plate, and parts such as layer plates and other communication devices can be installed. When the size of the equipment cabinet is small, the layer plates and the other communication devices can be directly installed on a frame, the number of parts is decreased, the weight of the equipment cabinet is reduced, and cost is reduced.

The invention provides a self-resetting steel frame beam-side column joint and a construction method thereof. The self-resetting steel frame beam-side column joint comprises a steel beam, wherein thesteel beam is horizontally arranged on one side of a steel column; a shape memory alloy plate is arranged between a flange of the steel beam and a flange of the steel column, and the shape memory alloy plate is arranged on the outer side of the flange of the steel beam; one end of the shape memory alloy plate is connected with the flange of the steel beam, and the other end of the shape memory alloy plate is connected with the flange of the steel column; and friction energy dissipaters are symmetrically arranged on the two sides of a web of the steel beam, one end of each friction energy dissipater is connected with the steel beam, and the other end of each friction energy dissipater is connected with the flange of the steel column. According to the self-resetting steel frame beam-side column joint and the construction method thereof, the shape memory alloy plate is arranged, and the self-resetting function of the joint is achieved by utilizing the plastic deformation of the shape memory alloy plate; and friction energy dissipation can be achieved between the friction energy dissipaters and the flange and the web of the steel beam, and the friction energy dissipaters and the shapememory alloy plate generate a synergistic effect to jointly absorb seismic energy at the joint, so that the structural ductility and energy dissipation capacity of the steel frame beam-side column joint are effectively improved, and the post-earthquake repair cost of the structure is reduced.

The invention relates to a node structure for steel structure beam column rigid connection, a manufacturing method and a residential structure system. The node structure for steel structure beam column rigid connection comprises a center node, a steel beam, a beam web plate splicing plate and upper and lower steel columns, wherein the center node is welded and prefabricated in a factory; steel beam wing edges, a web plate and the center node are connected through high-intensity screw bolts. The field butt joint penetration welding of bolting and welding connection node wing edges is omitted; the construction field beam column and node full screw bolt assembly is realized. Compared with a traditional full screw bolt connection node, the node structure has the advantages that the number of screw bolts in wing edge positions is reduced by a half; the laying lap joint node in the wing edge position is used, so that the beam construction in-position and screw bolt connection is convenient;multilayered columns and standardized nodes are welded and prefabricated into a whole in the factory; the field construction assembly speed is accelerated. In addition, the node position beams are penetrated; the stress is reasonable; the factory standardized prefabricating production is realized; the field assembly is convenient and fast; the construction speed is accelerated.

The invention discloses a quick connection unit for a section steel frame and an internally filled light steel wall body and an assembly method thereof, and belongs to the field of connection structure of light steel and heavy steel. Thequick connection unit for the section steel frame and the internally filled light steel wall bodycomprises the steel frame and the light steel wall body. The lightsteel wall body is arranged in the steel frame, and a light steel keel of the light steel wall body is fixedly connected with the steel frame by steel clamping pieces. The steel clamping pieces are of different structures based on the type of the heavy steel in the steel frame and the position of the light steel wall body in the steel frame. The steel clamping pieces are provided with surroundingparts, and protruding lugs are arranged at two ends of each surrounding part. The steel clamping pieces of different types are used as connecting units, and according to the position of the light steel wall body in the steel frame and the cross section type of the steel frame, a suitable connecting unit is selected; the connection technology of the light steel wall body is simplified, the construction time is shortened, connection is firm and stable, the construction cost is low and good economic benefits are achieved.

The invention relates to a transient electromagnetic low-mutual-inductance foldable type coil which comprises a transmitting coil and a receiving coil. The transmitting coil and the receiving coil are respectively and fixedly arranged on a foldable bottom liner, the transmitting coil is placed on the periphery of the receiving coil, and a gap is reserved between the transmitting coil and the receiving coil. A plurality of straps are arranged on the two sides of the bottom liner, and the bottom liner is connected with combined type longitudinal supporting rods placed on the two sides of the transmitting coil through the straps. According to the transient electromagnetic low-mutual-inductance foldable type coil, on one hand, the transmitting coil and the receiving coil are fixed in the same plane through components such as rod sleeves, the gap is reserved between the transmitting coil and the receiving coil, mutual inductance caused by current changes in the two coils can be effectively reduced, and the signal to noise ratio is improved; on the other hand, by the aid of the foldability of the transmitting coil and the receiving coil, the occupied size of the coils in the manual carrying process can be decreased, the coils can be connected with an instrument conveniently, and great convenience is brought to usage of people.

The invention provides a self-resetting steel frame beam-middle column joint and a construction method thereof. The self-resetting steel frame beam-middle column joint comprises two steel beams; the two steel beams are horizontally arranged on two sides of a middle column; a shape memory alloy bent steel plate is arranged between the flange of each of the steel beams and the flange of the middle column; the shape memory alloy bent steel plates are arranged on the outer sides of the flanges of the steel beams; one ends of the shape memory alloy bent steel plates are connected with the flanges of the steel beam, and the other ends are connected with the flange of the middle column; friction energy dissipaters are symmetrically arranged on two sides of webs of the steel beams; and one ends ofthe friction energy dissipaters are connected with the steel beams, and the other ends are connected with the flange of the middle column. The self-resetting function of the joint is achieved throughplastic deformation of the shape memory alloy bent steel plates; and friction energy dissipation can be achieved between the friction energy dissipaters and the flanges and webs of the steel beams, the friction energy dissipaters and the shape memory alloy bent steel plates generate a synergistic effect to jointly absorb earthquake energy at the joint, the structural ductility and energy dissipation capacity of the steel frame beam-middle column joint are effectively improved, and the post-earthquake repair cost is reduced.