4317 results about "Steel columns" patented technology

A novel building construction is described for exterior building walls. The construction comprises an interior frame formed of a plurality of laterally spaced studs or beams, a layer of rigid insulation adjacent to the exterior side of this steel frame, exterior building cladding adjacent the exterior side of the rigid insulation and a plurality of low conductivity connectors, e.g. insulating plastic connectors or thin metal strips having an insulating plastic foam coating, extending through the layer of rigid insulation and connecting together the exterior cladding and the interior steel studs or beams. Vertical channels are formed adjacent both the inside and outside faces of the insulation layer to remove moisture. This provides the required structural strength with a minimum of thermal conductivity from the warm side to the cold side of the building envelope, while providing exterior drain channels and interior moisture removing channels.

The present invention provides a joint structure of iron framework capable of enhancing workability and strength. The joint structure of iron framework 1 is a joint structure of iron framework for connecting a hollow rectangular steel beam 4 to a hollow rectangular steel column 2 via a coupling member 3. The coupling member 3 includes: a rectangular cylinder 31 fitted to an outer periphery of the hollow rectangular steel column 4 and firmly attached to the hollow rectangular steel column 4; a U-shaped receiving member 4 provided to a side surface of the rectangular cylinder 31 for connecting the hollow rectangular steel beam 4, the U-shaped receiving member 32 having a bottom portion 32b protruded from the side surface of the rectangular cylinder 31, having a U-shaped opening portion 32 located to face upward, having a U-shaped end surface firmly attached to the side surface of the rectangular cylinder 31; and a lid 33 firmly attached to the U-shaped receiving member 32 in a state of covering the upper surface of the hollow rectangular steel beam 4 mounted in the U-shaped receiving member 32.

The invention relates to an easily repaired steel-structure beam-column node, in particular to an easily repaired steel-structure beam-column node which is applied in the field of structural engineering and particularly used in high-intensity earthquake-proof areas. The node comprises an upright H-shaped steel column and an H-shaped steel beam of which the end part is vertically connected on a side wing plate of the H-shaped steel column, and is characterized in that: connecting ends of a belly plate of the H-shaped steel beam and the side wing plate of the H-shaped steel column are connected by a reinforced connecting plate closely contacted with the belly plate of the H-shaped steel beam and high-strength bolts penetrating the reinforced connecting plate, the reinforced connecting plate is in welding connection with the side wing plate of the H-shaped steel column, and both sides of the connecting end of a bottom side wing plate of the H-shaped steel beam are in locked connection with the H-shaped steel column by a T-shaped connecting plate and penetrating high-strength bolts respectively; and the T-shaped connecting plate is transversely arranged, upper and lower ends of the T-shaped connecting plate in the vertical direction are in locked connection with the side wing plate of the H-shaped steel column by a washer and the penetrating high-strength bolts respectively, a transverse plate of the T-shaped connecting plate is supported on the lower part of the bottom side wing plate of the H-shaped steel beam and locked by the penetrating high-strength bolts. The structure can effectively avoid brittle failure, has good ductile fracture characteristic, and can be widely applied to structures of earthquake areas, particularly the high-intensity earthquake-proof areas; and the easily repaired steel-structure beam-column node of the invention also has the advantages of convenient construction and convenient after-earthquake repairing.

The invention relates to a steel frame precast prestressed beam column joint with a post-earthquake recovering function. The joint comprises a steel frame column, a short beam section, a beam column connection device and an energy consumption device, wherein the steel frame column comprises a steel column, a column reinforced rib and a column reinforced plate; the short beam section comprises a short beam section web, a short beam section flange and a short beam section flange reinforced plate; the beam column connection device comprises a short beam section web reinforced rib, a prestressed cable and a beam end top plate; the energy consumption device comprises two channel steels and a high-strength bolt; and the two short beams are integrally connected with the column in a factory through a tension prestressed cable and two short beam section web reinforced ribs. When the earthquake action achieves a certain degree, the contact surface of the beam and the column is opened; the high-strength bolt is in friction energy dissipation so as to avoid destroying main components, such as beams and columns After the earthquake, the beams can be recovered to the former vertical position under the action of the prestress.

The invention belongs to the technical field of pipe whip restraint steel structures of main power houses of nuclear power station conventional islands, in particular to a production process method of the pipe whip restraint steel structure of the main power house of the nuclear power station conventional island, which comprises the lofting process, the marking-off and scribing process, the cutting processing process, the bevel processing process, the hole-making process, the correction process, the polishing surface, the material splicing process, the pre-splicing process of a steel member, the assembly process, the processing process of a friction surface, the welding process of the steel structure and the anti-slip test of the friction surface of the steel member before leaving a factory, sandblasting, derusting and coating of a base coat are carried out in the factory, and the production of the steel structure is divided into the production processing of a welded H-shaped steel column, the production of a steel beam, the assembly and the welding of a support part, the production of a combined steel beam, the assembly and the welding of a girder box body and an inclined support below the girder box body, and the assembly and the welding of a pipe whip restraint key. The production process method can improve the drilling precision, utilize a numerical control planar drilling machine to complete the drilling on a gusset plate, determine a variety of processing processes and welding process parameters, and ensure the dimension of the member after the assembly and the smooth proceeding of field installation.

The invention discloses a system for alternatively supporting a whole lifting steel platform formwork by a steel column casing rack. The system comprises a steel platform, a template system, a scaffold system, a support system and a climbing system, wherein the support system comprises a casing rack support and a steel column support; the climbing system comprises climbing boosts and a hydraulic system; preformed core column holes are distributed on a core cylinder structure at intervals along the height direction; the casing rack support is fixedly arranged under the steel platform; the steel column support is fixed in the preformed core column holes under the construction state to serve as the support of a steel platform formwork under the construction state; under the climbing state, the steel column support is fixed to the upper end part of the concrete core cylinder structure and is used as the support of the steel platform formwork under the climbing state; and under the construction state, the steel column support is fixed to the steel platform by the climbing boosts. According to the system, the steel platform formwork system can greatly reduce the construction cost and save the engineering material by the whole hydraulic climbing supported by the tool type steel columns.

The fully prefabricated assembled steel-steel concrete structure includes two kinds of assembling forms. The first one is fully prefabricated assembled steel column-steel concrete structure, and its prefabricated steel column consists of H-shaped steel column, reinforcing concrete ribs, supporting steel plate and prestress-shearing force friction nodes with shear resisting strips. The second one is fully prefabricated assembled prefabricated steel pipe-concrete column-steel concrete structure, and the prefabricated steel pipe-concrete column consists of steel pipe with square cross section, micro expanding high strength concrete cast inside the steel pipe and shear resisting strips attached to the outer wall of the steel pipe to form preshearing force-friction type nodes. The present invention has raised antiseismic performance, area utilization, construction efficiency, fireproof performance, low cost and small member size, and is suitable for various buildings.

A fire and heat protection wrapping system is described for wrapping structural steel such as steel columns, beams and open web joists used in steel construction of all types of edifices. The protection wrapping system includes a concentric composite laminate structure having a plurality of concentric layers for the protection of structural steel components which are exposed to high temperatures of up to five hours (5 hrs) in duration. The plurality of concentric layers includes an outer first layer, an inner second layer, an inner third layer and an inner core fourth layer for wrapping the structural steel component. The outer first layer is a fiberglass textile having an intumescent coating resistant to heat, water and impact. The inner second layer is a metal foil layer for reflecting heat and eliminates the convection transfer of heat. The inner core third layer is a low conductivity refractory blanket for reducing the transmission of heat. The inner core fourth layer is a metal foil layer for reflecting heat and eliminating the convection transfer of heat.

The invention discloses a single shaft tension loading device for testing the carbonation property of the concrete under tensile stress and a test method, wherein the hex nuts pre-embedded at the axis of two ends of the tested element connect the cylinder or rectangle tested element between two parallel steel plates, four same compressed springs are sheathed on four steel columns of the diameters smaller than the inner diameter of the springs, the two steel plates can parallel move between the four steel columns, the material parameters and the compressed quantity of the springs can be used to calculate the axial tensile load on the tested element, the tested element is axially patched with three stress sheets to find the actual tensile stress at different parts. The characteristic parameters of the springs can be changed to obtain the carbonation test parameters under different tensile stresses.

The invention relates to a normally-closed type power supply main switch device which comprises a shell (1), a current sampling unit connected with an integral load, a main control chip (7), a movable contact (9) and a static contact (10), wherein a magnetic coil (13) is wound on an iron core (15) and a steel column (14), and the magnetic coil (13) is supplied with power by a storage battery (12). The normally-closed type power supply main switch device is characterized by also comprising switch parts respectively connected with the magnetic coil (13) and the main control chip (7); the current sampling unit is respectively connected with the static contact and the main control chip; and the main control chip (7) collects a signal of a start switch (2) and a current signal of the current sampling unit for controlling the switch parts.

The invention relates to a reamed steel structure beam-column joint connected via an end plate and a construction method for the same. The reamed steel structure beam-column joint connected via an end plate comprises a steel column and an H-section steel beam, which is characterized in that: a steel column flange is connected with the end plate via a friction-type high-strength bolt; the end plate is connected with a steel beam web via a steel beam web connection plate; the end plate is connected with an upper steel beam flange and a lower steel beam flange via a steel beam flange connection plate; the steel beam web connection plate and the steel beam flange connection plate are welded on the end plate via groove full penetration welds; oblong holes are disposed on the steel beam web connection plate and the steel beam flange connection plate; the steel beam web connection plate and the steel beam flange connection plate are connected with the steel beam web and the steel beam flange via friction-type high-strength bolts; and the steel column flange is provided with a shear-resisting support plate on the bottom of the end plate. The reamed steel structure beam-column joint connected via an end plate and the construction method for the same disclosed by the invention can remarkably enhance the ductile deformability and energy dissipation capability of the joint under the function of a rare earthquake, and have the advantages of being convenient in construction, easy to repair after an earthquake etc.

A rotary system having a sectional drill steel column connecting a drilling machine and rotary drill bit and being constructed and arranged to accommodate internal fluid flow to the drill bit without pressure loss, and which column employs a coupler section having both threaded and multi-faced ends for joining adjacent drill steel sections; and further having supplemental bore reamers adjacent to the drill bit to maintain design bore dimensions and accommodate fluid flow and removal of cuttings.

A precast composite flooring system utilizes girders and floor panels having steel lower structures placed in tension and concrete upper structures places in compression. Openings through a stem wall allow ducts, pipes, and conduits to be run therethrough. The system provides reduced weight over conventional precast or pour in place systems, allowing further reduction in the weight and size of other building components. The floor deck does not use tensioning strands, allowing openings to be formed at nearly any stage of construction and with reduced concern over cutting steel reinforcement. The floor panels and girders bolt together and bolt to a steel column frame, allowing for more efficient assembly.

The invention relates to a construction method for formed steel reinforced concrete beam-column nodes, belonging to the technical field of industrial and civil building construction. According to the invention, the problem for arranging and binding intricate and complicated steel bars and corresponding formed steel in formed steel beam and formed steel column connection node domains is creatively and sequentially solved; the boring of formed steel wing plates is avoided; the up-and-down adjusting and the bending for horizontal bars of X beams and Y beams can be realized through enabling the horizontal/longitudinal bars of the X beams and the Y beams to intersect with the formed steel columns and opening vertical long-strip holes on web plates of the formed steel columns; the area of the openings on the web plates of the formed steel columns is controlled to exceed 20% of that of the sectional area of the web plates, thus the negative influence on the strength of the web plates of the formed steel columns because of the openings is reduced to the maximum; and hoop bars are orderly arranged on the upper surfaces of column stiffening plates at intervals at the spatial staggered positions of column main bars, the column stiffening plates and column hoop bars, thus the number of steel bar joints is reduced. The construction method provided by the invention not only increases the construction efficiency, but also ensures to enhance the project quality and the node domain bearing capacity for the beam-column connection of formed steel reinforced concrete structures.

The invention relates to a hole-expanding type steel structure beam column node in short T-shaped steel connection. The hole-expanding type steel structure beam column node comprises two pieces of short T-shaped steel, a steel column and an H-shaped steel beam of which the end is vertically connected to a flange plate of the steel column, wherein a web plate of the short T-shaped steel is connected with the flange plate of the H-shaped steel beam; and the flange plate of the short T-shaped steel is connected with the flange plate of the steel column. The hole-expanding type steel structure beam column node is characterized by also comprising a flange steel cushion plate, wherein the flange steel cushion plate connects the web plate of the short T-shaped steel and the flange plate of the H-shaped steel beam by using a friction type high-strength bolt; the flange plate of the short T-shaped steel is connected with the flange plate of the steel column by using the friction type high-strength bolt; and a bolt hole in the web plate of the short T-shaped steel is a long circular hole. The invention also relates to a connection method of the hole-expanding type steel structure beam column node in the short T-shaped steel connection. The steel structure beam column node has quite high ductile deformation capacity and excellent energy-dissipation capacity; and the brittle failure of the steel beam or the steel column in a node area under the action of a seldom-occurring earthquake can be prevented.

Novel prefabricate prestressed steel frame girder-column pitch point with a post-earthquake self-reset function comprises steel frame girders and steel frame pillars, wherein the steel frame girders comprise middle girder sections, short girder sections, reinforcing devices, connecting devices and energy consumption devices. The middle girder sections comprise middle girder section webs and middle girder section flanges connected on the periphery of the middle girder section webs; and the connecting mode of the steel frame girders and the steel frame pillars is that short girder section webs are connected with steel pillars through scabs and high-strength bolts. When an earthquake reaches a certain degree, connecting surfaces of the middle girder sections and the connecting vertical plates are separated, and the high-strength bolts rub to consume energy, and thereby avoiding or reducing damage of main construction members such as the steel frame girders and the steel frame pillars. After the earthquake, the structure can return the original vertical position under the prestressed influence, and can restore original functions of the structure.

Disclosed is a construction method of the support frame steel concrete girder structure transfer floor for the high-rise buildings, which relates to the high-rise building structural transferring technology. Reinforced plates are welded on a profiled steel girder column flange plate and a profiled steel column flange plate; a profiled steel column stirrup is machined to an open stirrup which is welded on the reinforced plate. A perforation hole used for the stirrup to be inserted into is preset on the web plate of the profiled steel column; an angle table is welded on the profiled steel column flange plate; reinforced steel bars are in lap welding with the angle table. In the intersection of a non-frame girder and the profiled steel girder, the reinforced steel bars disconnect a bent anchor on the profiled steel girder web plate; wall body reinforced plates are generally welded on the upper flange wall body of the profiled steel girder; both sides of the wall body reinforced steel bars are welded on the wall body reinforced plates. Perforation holes used for the stirrup to be inserted into are prearranged on the upper flange of the profiled steel girder for the reinforced steel bar parts of the upper column and the concealed column of the profiled steel concrete girder; tie bars are welded with the tie bar reinforced plates. Spilt bolts are welded on both sides of the profiled steel web plate to reinforce the profiled steel concrete girder mould plate. The construction method of the support frame steel concrete girder structure transfer floor for the high-rise buildings has the advantages that the important technical problem the support frame steel concrete girder structure transfer floor in the construction process of the high-rise buildings is solved; the intensity, rigidity and the vibration resistance of the profiled steel concrete girder are reinforced.

The invention discloses a construction method of a large-sized arc-shaped wall. The method mainly comprises the following steps of: measuring and positioning; erecting a scaffold; mounting an arc-shaped in-column section steel column; binding a steel bar on the periphery of the section steel column; measuring and positioning, mounting an arc-shaped annular beam inner steel bar on the section steel column, and binding and fixing; mounting and fixing an arc-shaped column and an arc-shaped annular beam template on the steel bar; pouring concrete to form the arc-shaped column and an arc-shaped annular beam; measuring and manufacturing an arc-shaped plate; and mounting and fixing the arc-shaped plate on the arc-shaped column and the arc-shaped annular beam. According to the construction method of the large-sized arc-shaped wall, vertical sectioned construction is adopted, inner section steel and a steel bar structure of the arc-shaped column and the arc-shaped annular beam are erected layer by layer; the template is bound and is poured and molded; the poured arc-shaped column and the arc-shaped annular beam are continually provided with the upper-layer arc-shaped column and the arc-shaped annular beam; and finally, the arc-shaped plate which is designed and manufactured outside a field is mounted on the arc-shaped column and the arc-shaped annular beam, and process improvement can be carried out according to implementation effects.

The invention relates to an experimental device for researching a drill column dynamic characteristic. The experimental device comprises a main machine frame, a well-wall-simulating assembly, a rotary assembly, a disc assembly, an excitation assembly, a weighing assembly and a detecting device. The well-wall-simulating assembly comprises an organic glass tube, a fixing clamping and a clamp mounting plate. The rotary assembly is provided with a motor, a driver, a coupler, a thin steel column and a top mounting plate, the rotary assembly penetrates through the whole main machine frame, the disc assembly comprises a disc and a cylinder, the disc is arranged on a floating platform, and the disc conducts rotary movement in the cylinder. An exciter in the excitation assembly excites the bottom of the disc according to the input signal type to simulate interaction of a drill head and rocks at the bottom of a borehole. The detecting device comprises a whirling motion track and a transverse vibration and longitudinal vibration detecting device. The experimental device for researching the drill column dynamic characteristic can simulate the vibration and deformation situations of a drill column and determine the parameters of the rotating speed, the bit pressure similarity ratio and the like according to the dynamic similarity ratio and the geometric similarity ratio.

The invention relates to a flat shim plate-adjustable grouting installation method, belonging to a method for installing a steel column or a device. The method comprises the following steps: symmetrically welding rectangular plates with holes on the back and forth of the left side and the right side of a flat shim plate at intervals; cutting a grouting pit outside the foundation bolt or the preset hole of the concrete foundation of an installation device; arranging four screw holes which are arranged into a rectangle in the grouting pit; correspondingly and vertically plugging four screws the upper ends of which are respectively screwed with a regulating nut into the four screw holes; correspondingly sheathing the holes on the four rectangular plates of the flat shim plate onto the four screw in a penetrating mode so that the flat shim plate is supported on the regulating nuts; utilizing the regulating nuts to regulate the scale height and the levelness of the flat shim plate; leveling the flat shim plate for the fist time, arranging a grouting box on the foundation surface at the periphery of the grouting pit and placing a grouting material into the grouting box; when the grouting material is prehardened, utilizing the regulating nuts to accurately level the flat shim plate so that both the scale height and the levelness of the flat shim plate reach the installation requirements. When the steel column or the device is installed, an inclined shim plate is not needed for leveling, thus the method is convenient and speedy.