3057 results about "Steel columns" patented technology

The invention provides steel structure profile cutting equipment. The steel structure profile cutting equipment comprises a conveying assembly, a cutting assembly, a discharging assembly, a flow dividing driving assembly and a positioning assembly. The conveying assembly conveys profiles through a bearing roller A, the discharging assembly adopts a liftable bearing roller B to achieve automatic discharging, the flow dividing driving assembly independently drives the conveying action and the discharging action through a ratchet mechanism, and interference is avoided. The positioning assembly comprises a width fixing mechanism, a thickness adapting mechanism and a guiding and clamping mechanism, the clamping position can be adjusted in a self-adaptive mode, and it is ensured that the profiles are guided stably in the conveying process and fixed firmly in the cutting process. The cutting assembly adopts a hydraulic drive disc saw, and precise cutting is achieved. The equipment has the advantages of high-precision positioning, automatic adjustment, efficient continuous operation and the like, is suitable for fixed-length cutting of heavy profiles such as large steel ingots and steel columns, and effectively improves the machining efficiency and the cutting quality.

The invention relates to the related technical field of steel column construction, and particularly discloses a super high-rise building steel column embedded type column foot construction device and a construction technology thereof.The construction device comprises a foundation, a steel column, a rib plate, a bottom plate and anchor bolts, the position, below the rib plate, of the steel column is fixedly connected with a pouring plate, and a cavity is formed in the bottom plate; a fixing assembly used for fixedly clamping a steel column is arranged below the bottom plate, an auxiliary assembly used for removing bubbles from concrete is arranged on the side face of the steel column, two sets of clamping blocks move in a cavity of the bottom plate, the bottom plate can be clamped and fixed, and the stability of the steel column during pouring is improved; and meanwhile, when a screw rod rotates to drive a threaded sleeve to rotate in an adjusting block, a steel column above the adjusting block can be pulled for position adjustment, and the adjusting block can drive a wedge-shaped block to extrude a cylindrical head and apply reverse extrusion force to a driving part, so that the clamping and limiting effects of a clamping block on a bottom plate are improved.

The invention provides a steel roof full-period deformation monitoring method and system based on multi-source sensor fusion, and belongs to the technical field of monitoring structural deformation or stress, and the method comprises the steps: laying a multi-source sensor network for synchronously collecting data; determining sliding block stress distribution data of the steel structure in the sliding process, and determining a local buckling risk area in combination with the dynamic vibration data; the steel roof is divided into a plurality of asymmetric sliding blocks, and a sliding path correction instruction is generated in combination with the geometric state data of the sliding track; compensating the geometric deviation of the slip track in real time, and predicting a critical deformation threshold value of a subsequent construction stage by combining an initial gap parameter of the pre-embedded support structure; and after sliding is completed, steel column falling track data are tracked in real time, the unloading rate is dynamically regulated and controlled in combination with the critical deformation threshold value, and the unloading path is calibrated through the compensated sliding track geometric state data till the deformation error is converged within the preset tolerance range. And the construction precision and safety are effectively improved.

The utility model discloses a heat-preservation and energy-saving building column foundation heat-preservation joint which comprises an embedded part, a steel column and a high-strength heat-preservation cushion block. The embedded part comprises a positioning plate and a column foot anchor bolt and is embedded in the positioning plate when a reinforced concrete structural plate is poured, a higher part of the column foot anchor bolt is exposed according to the elevation of a steel column foot bottom plate, a high-strength heat preservation cushion block is arranged on the upper portion of the positioning plate, a hole is reserved in the position, corresponding to the column foot anchor bolt, of the high-strength heat preservation cushion block, and the column foot anchor bolt penetrates through the hole. A steel column base bottom plate penetrates through a column base anchor bolt to fall on the high-strength heat preservation cushion block and is firmly connected with the column base anchor bolt through a nut, a steel cover plate is arranged on the periphery of the steel column, the steel cover plate and the ground surface layer are located on the same horizontal plane, and the space between the steel cover plate and the steel column base bottom plate is filled with foaming polyurethane. On the premise that the structure bearing requirement is met, cold (heat) breaking is conducted on the column foundation part, a heat preservation surface layer does not need to be additionally adopted to wrap a building inner structure column (steel column), the size of the built building inner structure column is appropriate, and building space does not need to be additionally occupied.

The invention relates to the technical field of construction methods, in particular to a large-angle inclined steel column self-balancing construction method based on BIM. Comprising the following steps that a database containing steel column parameters, environment parameters and construction parameters is built through a BIM model, and the temperature change value, the instantaneous wind speed, the steel column real-time stress and the hoisting section weight in the construction process are collected in real time; based on the database and the real-time collected data, a torque deviation calculation model under the temperature and wind power coupling effect is established, and the dynamic adjustment amount of the lifting point is deduced according to a deviation value output by the model; calculating a real-time counterweight compensation amount in combination with the lifting point adjustment amount and a stress accumulation effect of previous construction; and according to the balance weight compensation amount, the hoisting posture of the steel column is dynamically regulated and controlled, self-balance control in the construction process is achieved, and the problem that a traditional static method cannot adapt to dynamic stress changes can be solved.

The utility model relates to the technical field of steel structure shear resistance, in particular to a novel steel structure shear key which comprises a high-strength bolt and a sleeve which are sleeved together, the top of the sleeve is inserted into a pre-embedded plate of a steel column foot or a support, and the top of the sleeve is in threaded connection with the pre-embedded plate and then is welded and reinforced under the plate in a surrounding mode. The sleeve is embedded into a foundation and fixedly connected with the foundation, and the high-strength bolt is screwed into the sleeve through the top of the sleeve and fixedly connected with an upper layer component through a nut. The high-strength bolt and the sleeve which are sleeved with each other are adopted to replace existing H-shaped steel and square steel, only a small installation gap is needed, steel bars at the joint are easy to process, the influence on anchoring connection of concrete and the steel bars at the connecting position can be reduced to the maximum extent, the embedded part is machined in a factory, and the construction cost is reduced. And the connection precision and quality are guaranteed, only high-strength bolts need to be screwed in and screwed to the installation torque on site, and the effect is good through practice inspection.

The utility model discloses an assembly type steel column butt joint auxiliary connecting piece which is used for assisting hoisting alignment of a lower steel column and an upper steel column and comprises a connecting piece body, an upper steel column and a lower steel column, and the connecting piece body is an L-shaped steel plate attached to the inner wall of the lower steel column and the inner wall of the upper steel column; connecting bolt holes are formed in the lower steel column and the upper steel column; and the connecting piece comprises a guide section and a connecting section which are distributed up and down. According to the utility model, the connecting section of the connecting piece can be arranged in the lower steel column, the connecting bolt hole corresponds to the locking bolt hole, the connecting bolt hole and the locking bolt hole are fixed through the fixing bolt, then the upper steel column is transported to the position above the lower steel column through hoisting equipment, then the upper steel column is descended, and the upper steel column is connected with the guide section of the connecting piece; the guide section is used for guiding the hoisting alignment process and assisting rapid connection of the upper steel column and the lower steel column, then the connecting piece and the upper steel column are connected through the fixing bolt, the purpose of rapidly completing hoisting butt joint of the upper steel column and the lower steel column is achieved, and construction is rapid and convenient.

The utility model relates to the technical field of building structure engineering, in particular to a steel beam column joint structure suitable for steel beams with different section heights. Comprising steel columns and steel beams. Each flange connecting piece comprises a first connecting part in bolted connection with a steel beam flange and a second connecting part in bolted connection with a steel column; the first connecting part and the second connecting part are vertically intersected to form a T-shaped bending component; the web connecting piece comprises a third connecting part in bolted connection with a steel beam web and a fourth connecting part in bolted connection with a steel column; the third connecting part and the fourth connecting part are vertically intersected to form a bent component; the corner connecting pieces are used for fixedly connecting the adjacent second connecting parts which are located on the different sides of the steel column and located at the different section heights into a whole in the horizontal direction. The steel beam column joint structure is good in overall stress, extremely high in stability and easy to install and assemble.

The utility model belongs to the technical field of forging part surface oxide layer cleaning, and particularly relates to a metal forging oxide skin cleaning device which comprises a base. Two pneumatic cylinders are installed on the base, pneumatic rods are assembled at the acting ends of the two pneumatic cylinders, fixing plates are fixedly connected to the top ends of the two pneumatic rods, a shell is fixedly connected between the two fixing plates, a rotating shaft is rotatably installed in the shell, a rotating cylinder is sleeved on the rotating shaft, a first motor is installed on the side wall of the shell, and a second motor is installed on the side wall of the shell. The output end of the first motor is connected with one end of a rotating shaft, and four mounting seats are fixed on the circumferential surface of the rotating cylinder; when the device is used, the polishing and cleaning wheel can be conveniently and rapidly replaced, the working efficiency is greatly improved, the distance between the two conveying carrier rollers can be adjusted according to needs, the conveying and cleaning requirements of different forged steel columns are met, and the use range of the device is greatly widened.

The invention relates to a steel support end expanding joint structure design method. The method is suitable for steel support design. According to the technical scheme, the steel support end expanding joint structure design method comprises the steps that section parameter information of a steel column, a steel beam and a steel support at a joint and steel strength information of the steel column, the steel beam and the steel support are obtained; the supporting flange transition connection form at the node selected by the user is obtained, and the supporting flange transition connection form comprises supporting flange broken line transition connection and stiffening, supporting flange arc transition connection and non-stiffening and supporting flange arc transition connection and stiffening; based on the support flange transition connection form, the overall structure requirement of the steel support end expansion joint and the detail structure requirement corresponding to the transition connection form are called; and on the basis of the section parameter information and the steel strength information of the steel columns, the steel beams and the steel supports, the structural parameter information of the steel support end expansion joints is generated by combining the overall construction requirements and the detailed construction requirements.

The invention provides a foundation pit supporting system, and belongs to the technical field of constructional engineering. According to the structure, an inner supporting frame is located in an outer supporting frame, a rectangular steel column of a bridging frame is located between the outer supporting frame and the inner supporting frame, the two Y-shaped ends of the bridging frame abut against the inner wall of the outer supporting frame and the outer wall of the inner supporting frame respectively, and a connecting disc of the bridging frame abuts against the inner wall of the inner supporting frame; the reinforcing anchor rods extend into the external contact structure, and a plurality of vertical supporting columns are arranged on the outer wall of the outer supporting frame. A frame structure with an inner layer and an outer layer is constructed, on the basis, a whole is formed through the bridging frames, and the reinforcing anchor rods are installed; the reinforcing anchor rod is wedged into the soil layer of the foundation pit and is fixed with the soil layer by using the anchor bolt with the wing plate and the aileron, so that the stability is fully enhanced; meanwhile, the vertical supporting columns are arranged on the outer side of the outer supporting frame, and the structural strength is guaranteed. The supporting structure has better structural strength and is stable and reliable when used for supporting the foundation pit.

The invention relates to the technical field of fire prevention, and discloses a grid filling type non-expansive fire retardant coating multi-layer brushing method which comprises the following steps: firstly, spraying a fire retardant coating on a square steel column in a crossed manner to form a grid-shaped spraying inner layer; both volume change and sagging can be absorbed by the pits in the centers of the grids, and the overall thickness of the ridge line position is uniform; after the sprayed inner layer is initially set, the convex points are scraped off, a new fireproof coating is scraped in the grids and is thickened outwards to form the scraped outer layer, the effect similar to reworking is achieved while the total thickness reaches the standard, and defects existing in the sprayed inner layer and local thickness unevenness are covered. Meanwhile, the main body of the blade coating outer layer is separated by the grids, so that the phenomena of thin upper part, thick lower part, edge deformation and sagging caused by paint flowing are avoided; and the inner corner protection net is used for preventing the latticed spraying inner layer from influencing the edge position shaping of the blade coating outer layer, so that the thickness and the appearance of the coating layer can be qualified at a time.

The invention discloses a large-span arched steel truss with oblique supports and a construction method thereof, the steel truss is arched, the central structure of the steel truss is a pair of upper chords and a lower chord, the lower chord is located under the middle position of the pair of upper chords, and the two ends of each upper chord exceed the two ends of the lower chord in the chord direction; oblique supporting structures are symmetrically arranged at the two ends of a steel truss and used for supporting and installing the steel truss, and each oblique supporting structure comprises a reinforced steel concrete column, a steel column base, an A-shaped steel column and a back pulling steel rod, and the steel column base is directly or indirectly welded to the top end of a steel rib of the reinforced steel concrete column; the A-shaped steel columns incline upwards in the direction close to the chordwise midpoint of the steel truss, the two ends of the lower portions of the A-shaped steel columns are hinged to the pair of steel column feet respectively, the upper ends of the A-shaped steel columns are hinged to the ends of the lower chords, and the back-pulling steel rods incline upwards in the direction away from the chordwise midpoint of the steel truss, and the upper ends and the lower ends of the back-pulling steel rods are hinged to the ends of the upper chords and the steel column feet respectively. According to the steel truss, deflection deformation can be reduced, the anti-deflection performance is enhanced, the anti-seismic performance is improved, and steel is saved.

The utility model provides a leading-in device of an assembly type steel column foundation, which relates to the technical field of buildings and comprises a steel column mechanism, and a foundation mechanism is arranged below the steel column mechanism. In the utility model, when the steel column mechanism and the foundation mechanism are assembled and butted, along with the slow descending of the positioning plate, the guide head with the thinner bottom end can be easily inserted into the guide groove at the top of the concrete foundation, and the gradually thickened part can be gradually contacted with the inner wall of the guide groove, so that certain guide and self-adjustment effects are provided for the guide column; even if slight deviation exists during initial insertion, the thicker part is limited and guided by the groove wall of the guide groove along with the increase of the insertion depth of the guide head, so that the deviation is automatically corrected, and the square guide column can be smoothly inserted into the guide groove in the top of the concrete foundation; at the moment, the mounting holes in the surface of the positioning plate are just penetrated by corresponding steel bars, excessive adjustment is not needed, operation is convenient, and the assembling efficiency is effectively improved.

The utility model discloses an assembly type beam column structure for building engineering construction, which relates to the technical field of building engineering construction and comprises a steel column and a mounting seat fixedly sleeved on the steel column, a mounting groove is arranged at the intersection of the side wall of the mounting seat and the upper surface of the mounting seat, and an inserting groove is arranged on the inner bottom wall of the mounting groove; one end of the cross beam is arranged in the mounting groove, an inserting block matched with the inserting groove in an inserting mode is fixed to the bottom of the cross beam, and the section of the inserting block and the section of the inserting groove are both in a dovetail shape; a fixing plate is further included, the fixing plate is arranged in the mounting groove and slidably connected with the inner wall of the mounting groove, and a lifting assembly is mounted on the mounting base. One end of the cross beam is placed in the mounting groove, the inserting block is matched with the inserting groove in an inserting mode, the cross section of the inserting block and the cross section of the inserting groove are both in a dovetail shape, so that the horizontal movement of the inserting block and the cross beam is limited, and the cross beam is limited through the lifting assembly and the fixing plate, so that the cross beam is rapidly mounted or dismounted.

The utility model discloses a positioning tool for splicing a steel beam between the top ends of two T-shaped steel stand columns. The problem of how to develop an efficient and convenient positioning tool for a connecting plate for splicing the T-shaped steel stand columns and an I-shaped steel beam is solved. The traditional splicing of a connecting plate and an I-shaped steel beam in the air is moved to the ground, so that bolt holes in the connecting plate and bolt holes in the two ends of the I-shaped steel beam are accurately butted in place. The accurate butt joint of the screw holes in the high-altitude connecting plate and the screw holes in the two web plates is greatly facilitated, and the construction progress is accelerated.

The utility model relates to the technical field of building structures, and discloses an assembly type steel structure connection node of a sewing structure, which comprises a steel column and a plurality of steel beams, the periphery of the steel column is fixedly connected with a fixing plate, one side of the fixing plate is fixedly connected with a clamping piece, the adjacent sides of the plurality of steel beams are provided with mounting grooves, and the clamping piece is fixedly connected with the clamping piece. The bottom of the clamping piece is clamped with the mounting groove, the upper end and the lower end of one side of the inner wall of the steel beam are each in threaded connection with two fastening bolts, one end of each fastening bolt is in threaded connection with one side of the clamping piece, and the top wall of the clamping piece is in threaded connection with a threaded rod. According to the utility model, through the clamping of the clamping piece and the mounting groove, the primary clamping installation of the steel beam and the steel column is completed, and then the installation of different positions of a plurality of side surfaces is completed through the rotation of the threaded rod, the fastening bolt and the positioning screw rod, so that the situation that the toughness and the energy-dissipating capacity of the node are reduced is avoided.

The invention provides a quick connector for a liquid cooling pipeline. The quick connector comprises a male connector assembly and a female connector assembly, wherein the female joint assembly comprises a female joint main body and a locking sleeve, the locking sleeve is axially and slidably arranged on the female joint main body in a sleeving manner, and a locking mechanism formed by a plurality of limiting steel columns which can move in the radial direction in an annular array manner is arranged in the female joint main body; the male connector assembly comprises a male connector body, and an annular locking groove matched with the limiting steel column is formed in the outer surface wall of the insertion end of the male connector body. The inner wall of the locking sleeve acts on the limiting steel column through a sliding sleeve, the limiting steel column is adopted to replace a steel ball, the contact mode of a locking part is changed into linear contact or small-area surface contact from point contact, the stress area is increased, the contact pressure is remarkably reduced, abrasion and plastic deformation are effectively restrained, and the service life of the locking sleeve is prolonged. The connector can bear more frequent plugging and pulling and stronger system pressure impact and vibration, and the service life is greatly prolonged.

The invention discloses a stepping type climbing spraying robot and a spraying method thereof.The spraying robot comprises a feeding mechanism, a monitoring system, a control system, a horizontal moving mechanism and a vertical moving mechanism, two shells are connected into a whole through an opening and closing locking mechanism, and multiple sets of stepping type climbing mechanisms are arranged on the inner sides of the shells in the circumferential direction; the two semicircular plates are installed on the upper side of the shell, the horizontal moving mechanism is installed on the upper sides of the semicircular plates, the vertical moving mechanism is installed on the horizontal moving mechanism, the high-pressure spray head is installed on the vertical moving mechanism, and the spraying end of the high-pressure spray head is arranged relative to the outer surface of a steel column. According to the design, automatic stepping type climbing can be achieved through the stepping type climbing mechanism, and meanwhile the high-pressure spray head can freely move in a preset area through the horizontal moving mechanism and the vertical moving mechanism; in this way, the whole outer surface of the round steel column can be sequentially sprayed by controlling horizontal arc-shaped movement and vertical up-down movement of the high-pressure spray head, the spraying efficiency is high, and safety is good.

According to the diffusion type six-degree-of-freedom pose estimation-based steel column bottom plate prizing-free downward insertion method, the performability problem of one-time prizing-free downward insertion of a steel column bottom plate under the condition that a porous array is in a limited space and disturbed is solved, a task window is established under a unified construction coordinate system, and bolt axes and hole centers are collected and registered according to array topology; predictive interference is eliminated through diffusion type six-degree-of-freedom pose estimation with insertion constraint preposed, an allowable insertion pose range tightened along with the height is generated according to clearance and safety margin, and a downward insertion channel and an insertion constraint set are constructed in a communicating mode; tubular model predictive control is established in a feasible region, bounded disturbance of wind disturbance and swing is considered, a nominal trajectory and a segmented speed limit value of a channel center are formed, input shaping swing suppression and online monitoring are implemented, and withdrawing and rapid regeneration control are performed along a channel when necessary; the method is used for installation of simultaneous sleeving of multiple holes in the steel column bottom plate, and has the beneficial effects that the minimum clearance is kept not lower than the safety margin, lateral contact and prying are avoided, and the forbidden area is not touched under the limited space and disturbance.

The utility model provides a modular buckling restrained brace beam column insertion type connecting joint, belongs to the technical field of fabricated buildings, and solves the problems of low mounting efficiency, high maintenance difficulty, low strength, low support energy consumption, poor support surface external stability and the like existing in a joint when an existing brace is connected with a structural beam column. The joint comprises an H-shaped steel column, an I-shaped steel beam, a buckling restrained brace, a steel joint prefabricated module connecting piece, a beam-column prefabricated module connecting piece, an anti-lateral steel plate, an H-shaped stiffening rib and an L-shaped stiffening rib, the brace in the joint is connected in a high-strength bolt insertion mode, and the joint has the advantages of being convenient to construct, high in installation efficiency and easy to repair after an earthquake. The prefabricated steel module can increase the sector inertia moment of the cross-shaped connecting section, so that the prefabricated steel module counteracts the load of the support keeping a linear balance form, and the out-of-plane stability of the support is improved. Meanwhile, the connecting length of the support is shortened, the energy dissipation capacity of the support is improved, and the problem of in-plane bending moment response caused by the too long connecting section is avoided.

The invention relates to the field of steel structure welding, in particular to a steel structure welding forming arrangement fixing clamp and a using method thereof.The steel structure welding forming arrangement fixing clamp comprises a fixing frame, mounting plates are symmetrically and fixedly mounted at the two ends of the fixing frame, and fixing blocks are symmetrically and slidably mounted between the two mounting plates; according to the steel structure welding forming arrangement fixing clamp and the using method thereof, when the steel structure welding forming arrangement fixing clamp is used, a steel column with the specified size can be adjusted in advance to be fixed, the positioning motor is controlled to operate through the controller, the steel column extrudes the first positioning face and the second positioning face, and therefore the positioning face and the second positioning face are fixed; compared with the prior art, people can conveniently control the end portions of the two sections of steel columns to be aligned, meanwhile, the steel columns of different sizes can be adjusted to be fixed, and the using diversity of the device is improved.

The present application relates to the technical field of buildings, and provides a steel structure beam-column connecting structure and a prefabricated building. The steel structure beam-column connecting structure comprises a steel column and a steel beam. An outwardly extending support plate is disposed on a side surface of the steel column. The steel beam is supported on the support plate of the steel column, and a snap-fit structure inserted in the vertical direction is disposed between a bottom surface of the steel beam and an upper surface of the support plate. During use, the steel beam is supported by the support plate extending outwards from the side surface of the steel column, and the snap-fit structure between the bottom surface of the steel beam and the upper surface of the support plate is used to position the steel beam, thus preventing relative movement between the steel beam and the steel column. For the steel structure beam-column connecting structure provided by the present application, since the support plate and the snap-fit structure are both manufactured in a factory and only installation and partial welding are performed on site, construction efficiency is enhanced, thereby solving the problem of low assembly efficiency associated with conventional steel structure connection means.

The invention discloses a stiff steel rib column welding seam detection device, and relates to the technical field of welding seam detection devices. A stiff steel rib column welding seam detection device comprises fixing rods, two ends of each fixing rod are respectively connected with a mounting rack, the fixing rods are symmetrically arranged on the mounting racks, and the mounting racks are connected to H-shaped steel; the sliding frame is connected to the fixing rod in a sliding mode, and a weld joint movable detection area is formed between the two mounting frames; by arranging the wave guide rail, the ultrasonic probe can automatically and transversely swing along a wave path, the welding seam detection effect can be improved for H-shaped steel, automatic spraying of a coupling agent can be achieved by means of design and linkage of the wave guide rail, and even by means of combination of the wave guide rail and the L-shaped scraping plate, the welding seam detection efficiency is improved. The effect of uniformly smearing the coupling agent in a wave path is achieved; and meanwhile, through the arrangement of the wave guide rail, whether the welded wing plate is bent and deformed or not can be automatically judged in the fillet weld detection process, and then the welding quality of the H-shaped steel is improved.

The invention discloses an energy-saving stainless steel shell and tube condenser, which relates to the technical field of condensers, and comprises a shell, a plurality of groups of tube bundles, an upper tube plate, a lower tube plate and a lower tube plate, a lower tube plate; a baffle plate; the driving mechanism is used for driving the upper tube plate to rotate; the first adjusting mechanism is used for driving the tube bundle to rotate; the second adjusting mechanism is used for driving the baffle plate to lift; by changing the flowing path of steam in the shell, the temperature difference of areas with the same height in the shell is reduced, the stability of pressure in the shell is improved, the incident flow surface of the tube bundle is kept to be changed by driving the tube bundle to rotate, and the problem that the incident flow surface of the tube bundle is not changed, so that uniform cooling of the steam by cooling liquid in the tube bundle is affected is solved; the use effect of the cooling liquid is improved, the problem that steam easily forms vortex at the corners of the baffle plates and is gathered for a long time is solved by changing the circulating height of the steam between the two adjacent baffle plates, and the problem that the condensation efficiency is reduced due to the fact that the condensation area is occupied by steam gathering is solved.

The invention discloses an existing building demolition and transformation method for forming an I-shaped supporting structure through existing wall bodies, a main building comprises a first building body, a second building body and a third building body which are arranged in a stepped mode in height, and the existing building demolition and transformation method comprises the following steps that S1, the overground wall bodies of the main building are reinforced, and newly-added steel columns at the ends of reserved transverse walls are constructed; s2, the indoor wall bodies of the first building body, the second building body and the third building body are synchronously dismantled layer by layer from top to bottom, two transverse walls are reserved in the middle of each of the first building body, the second building body and the third building body and are not dismantled to serve as supporting transverse walls, and the supporting transverse wall in each building body and the outer longitudinal walls on the east side and the west side form an I-shaped supporting structure; s3, construction of a new foundation; s4, construction of a newly-built steel structure of the main building is conducted outside the supporting cross wall area; and S5, the supporting cross wall is dismantled, and construction of the remaining main building newly-built steel structure is conducted.

The invention discloses a steel structure prefabricated part welding device, and relates to the technical field of steel structure part welding machining, the steel structure prefabricated part welding device comprises a storage table, and a rectangular through hole is formed in the storage table; and the electric rolling wheels are used for conducting sliding unloading on the welded H-shaped steel columns in a rolling contact mode, a large round hole is formed in the top of the storage table, an annular cylinder is fixedly connected to the inner wall of the large round hole, and an annular rubber pad is fixedly connected to the top of the annular cylinder. The H-shaped steel column at the top is driven to slide and unload together when the electric rollers rotate, so that the problem that the H-shaped steel column is difficult to be quickly carried down from a machining table after being welded due to the influence of the special shape of the H-shaped steel column is solved, and a web plate at the top of an annular rubber pad is tightly adsorbed and fixed when an inner sliding circular plate moves downwards in an annular cylinder; and the phenomenon that the flange plate and the web plate deviate and incline due to the influence of external force during butt welding, and then secondary adjustment is conducted is avoided.

The utility model relates to the technical field of building structures, and discloses a node of a steel reinforced concrete column and a reinforced concrete beam, which comprises a longitudinal beam, a cross beam and a section steel column body with a built-in section steel body, the longitudinal beam, the cross beam and the section steel column body are perpendicular to each other and intersect at the node, and the longitudinal beam comprises a first longitudinal bar and a second longitudinal bar which are parallel to each other. The first longitudinal bars penetrate through the profile steel body in the full length direction, and the second longitudinal bars are connected to the two sides of the profile steel body through longitudinal sleeves. The cross beam comprises a first transverse longitudinal bar and a second transverse longitudinal bar, the second transverse longitudinal bar is connected with the profile steel body through a transverse sleeve, and the first transverse longitudinal bar is horizontally bent to the outer side of the profile steel body and is arranged in a full-length mode; the joint does not need a field welding process, the arrangement requirement of large-density multi-layer longitudinal bars can be met while the bearing capacity of the section steel can be guaranteed through the structure, internal force of the joint can be effectively transmitted into the section steel column, force transmission is clear, construction is easy and convenient, and the construction progress is accelerated.

The utility model discloses a leveling device for an H-shaped steel beam and a steel column corbel, which comprises a steel column body, a corbel body and an H-shaped steel beam body, the corbel body is arranged on the right side of the steel column body, a corbel upper flange plate is arranged at the upper end of the corbel body, and the leveling device further comprises a fixing mechanism and a leveling mechanism, the fixing mechanism comprises a fixing base and a jack, a long round hole bolt is installed at the upper end of the fixing clamp, an H-shaped steel beam upper flange plate is installed at the upper end of the H-shaped steel beam body, and a steel beam bolt hole is formed in the surface of the H-shaped steel beam body. According to the leveling device for the H-shaped steel beam and the steel column bracket, the fixing mechanism is arranged, so that the leveling mechanism is conveniently and quickly mounted and dismounted, the leveling mechanism is suitable for leveling steel beams of various widths, manual operation is convenient, construction is convenient, potential safety hazards caused by the fact that a worker uses a hammer to impact a punching nail in the air in the high altitude are effectively reduced, physical strength is saved for constructors in the high altitude, and the construction efficiency is improved. The mounting quality is improved.