2414 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 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 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 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 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 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 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 relates to the field of power transformation engineering sound barriers, in particular to a power transformation engineering movable noise reduction barrier capable of being patrolled externally, which comprises a plurality of steel columns, a steel bottom beam positioned at the lower sections of the steel columns and a steel top beam positioned at the upper sections of the steel columns, and the plurality of steel columns, the steel bottom beam and the steel top beam form a sound barrier frame. A sound barrier plate is arranged between every two adjacent steel columns, and the sound barrier frame and the sound barrier plates form a noise reduction barrier. The sound barrier construction period of the transformer substation and the converter station is shortened. According to the utility model, on-site material, machine tool and personnel investment is reduced, construction waste emission is reduced, noise pollution is reduced, and carbon emission is reduced. Daily patrol of operators is facilitated, the device can be quickly moved when the device needs to be carried during maintenance, a channel is reserved for carrying the device, the power failure time is effectively saved, and the working efficiency is improved. The technical problems that the construction period is long, resources are wasted, pollution is serious, and replacement and carrying are inconvenient can be solved.

The invention relates to the technical field of farm house construction, in particular to a farm house construction method based on combined prefabricated wallboards, which comprises the following steps: pre-burying bolts in foundation concrete of an assembly site according to a farm house prediction model, and sequentially mounting steel columns, steel beams and floor support steel to form a steel structure frame; pre-splicing is carried out; a wallboard edge abrasion model is determined, and the splicing hot air temperature is adjusted; determining a wallboard structure stability processing mode according to the stress distribution diagram, wherein the wallboard structure stability processing mode comprises the step of adjusting the dislocation angle of sawteeth at the edge of the wallboard when the wallboard is spliced, or determining the splicing gap width of rock wool in the wallboard according to the maximum heat transfer coefficient; the steel structure frame and the wall plate structure are spliced according to the splicing hot air temperature and the wall plate structure stability treatment mode to form the farm house outer maintenance structure; and the built-in structure is installed on the farm house outer maintenance structure to form the combined farm house. The structure stability and the heat preservation performance of the farm house are improved.

This invention relates to the field of soft soil pile foundation engineering technology, specifically to a photovoltaic pile foundation with FRP-steel honeycomb web and a construction method for solidifying a soft soil bearing layer. The pile foundation includes an FRP-steel honeycomb web photovoltaic pile foundation and a solidified soft soil bearing layer. The bottom of the FRP-steel honeycomb web photovoltaic pile foundation is located in the solidified soft soil bearing layer, and its top is located above the ground. The FRP-steel honeycomb web photovoltaic pile foundation includes a core mold, concrete, and a fiber-wound layer. The core mold includes a cross-shaped steel column and an FRP sleeve. Through holes are provided on the web of the cross-shaped steel column and on the two straight plates of the FRP sleeve. The FRP sleeve is fixed between two adjacent webs of the cross-shaped steel column. The number and position of the through holes on each straight plate of the FRP sleeve correspond to the number of through holes on the web of the corresponding cross-shaped steel column. Concrete is poured inside the FRP sleeve, and the fiber-wound layer is located on the outside of the core mold. This invention reduces the weight and cost of the photovoltaic pile foundation and improves its durability and stability in soft soil areas.

The invention discloses a temporary structure suitable for an assembly type station ending end, which comprises a temporary support structure arranged in a shape like a Chinese character'tian ', the temporary support structure is divided into a foundation support frame provided with an outer ring and a cross-shaped inner support frame body arranged between the foundation support frames, and the temporary structure further comprises an underpinning system arranged in the temporary support structure; through the construction method and structure of firstly building temporary steel beam columns and firstly supporting and then underpinning, the assembly starting point and end point positions of the full-prefabricated rectangular flat-top assembly type station are suitable for the working condition, the method can solve the problem of space and time conflict between the assembly trolley and the temporary steel stand columns, it is ensured that the assembly trolley is normally put into use, and the construction efficiency is improved. Meanwhile, the mounting and dismounting workload of the temporary section steel beam column is reduced, the construction efficiency is improved on the premise of ensuring the splicing quality, the high-place operation risk is reduced, meanwhile, normal construction of a post-pouring beam column system can be ensured, and the mounting and dismounting amount of large section steel components is reduced.

The invention relates to the technical field of connecting joints in common building structures, in particular to a fabricated beam-column joint of a frame structure and a construction method of the fabricated beam-column joint. By means of the prefabricated concrete stand column, the bracket and the steel column sleeve which are integrally formed through pouring, the overall structural strength of the prefabricated concrete stand column, the bracket and the steel column sleeve is improved, and a structural supporting foundation is provided for later installation of the prefabricated concrete cross beam; beam limiting columns arranged at the front ends of the prefabricated concrete cross beams are clamped with beam limiting blind holes formed in the steel column sleeves and the brackets, so that connection and fixation between the beam columns are achieved; meanwhile, the front ends of the four prefabricated concrete cross beams are clamped with one another, so that the four prefabricated concrete cross beams are locked with one another; connection and fixation of the assembly type beam columns can be achieved without opening holes and arranging bolts in the areas where the prefabricated concrete stand columns and the cross beam bodies are located, and the beam columns at the connecting positions are not prone to damage.

The model assembly room comprises a model assembly area, the side face of the model assembly area is communicated with a model preparation area, a model storage area and a control area, and a hoisting hole is formed in the top of the model assembly area; a model assembly upper supporting frame used for supporting the upper portion of the model assembly and a model assembly lower supporting steel column used for supporting the bottom of the model assembly are arranged in the model assembly area. The model assembly room is suitable for stably supporting a large model assembly, debugging and assembling the model assembly in the supporting process, and transferring the model assembly out of the model assembly room from the top of the model assembly room through the model hoisting device after assembly is completed; the technical blank of lack of a model assembly room suitable for stably supporting the large model assembly in the prior art is filled, so that a worker can complete efficient and safe assembly of the large model assembly without entering a test section, and the test efficiency and safety are improved.

The present invention provides a combined tower structure for a wind turbine unit, which includes four steel columns, four connecting steel pipes, four supporting steel pipes, a steel platform connecting member and a steel tower barrel. The steel tower barrel is installed on the steel platform connecting member. The upper ends of the four connecting steel pipes can respectively pass through the lower openings of the steel platform connecting member and extend into the cavity of the steel platform connecting member, and the four connecting steel pipes can be respectively connected to the steel platform connecting member; the upper ends of the four steel columns can be respectively connected corresponding to the lower ends of the four supporting steel pipes, and the four connecting steel pipes can be respectively in telescopic fit with the four supporting steel pipes; in the transportation state, each connecting steel pipe is correspondingly contracted in each supporting steel pipe; in the installation state, each connecting steel pipe extends out of each supporting steel pipe respectively, and the lower ends of each connecting steel pipe are respectively connected corresponding to the upper ends of each supporting steel pipe. The present invention can solve the problems of inconvenient transportation of the support members of the existing wind turbine tower and relatively high transportation cost.

The utility model discloses reverse construction method steel stand column installation equipment, which belongs to the field of deep foundation building construction, and comprises a self-adaptive centering clamping platform, a three-dimensional adjustable platform capable of moving in the front, back, left, right, up and down directions is fixedly arranged above the self-adaptive centering clamping platform, and the three-dimensional adjustable platform is fixedly arranged above the self-adaptive centering clamping platform. The self-adaptive centering clamping platform and the three-dimensional adjustable platform are provided with a first hole and a second hole respectively, the steel stand column can penetrate through the first hole and the second hole, and the self-adaptive centering clamping platform is provided with a leveling power execution element. The self-adaptive centering clamping platform is provided with a self-centering jaw assembly at the first hole, and the three-dimensional adjustable platform is provided with a clamping jaw assembly at the second hole. The device can adjust and correct slight errors generated when the steel stand column is grouted through the first insertion method, and the effects of effective clamping, center adjustment, angle adjustment, height adjustment and the like are achieved for the steel stand column through the later insertion method.

The utility model belongs to the technical field of civil engineering, and relates to a recoverable foundation pit steel stand column penetrating floor connecting structure. According to the technical scheme, the floor slab connecting device comprises a steel plate frame, an external steel bar connecting plate, an adjusting bolt and a sleeve; the steel plate frame is sleeved outside the steel stand column; a horizontal sleeve is outwards arranged on the side edge of the steel plate frame; the adjusting bolt is screwed into the sleeve and abuts against the side wall of the steel stand column. The external steel bar connecting plate is welded outside the steel plate frame and used for being connected with outer floor steel bars outside the steel stand column. And the steel stand column is pulled out by unscrewing the adjusting bolt. The floor slab connecting device further comprises an internal reinforcing steel bar connecting plate which is arranged in a floor slab hole in the steel plate frame after the steel stand column is pulled out and connected with a floor slab reinforcing steel bar in the hole. The steel stand column is simple and convenient to construct, can be reused and is high in universality.

The invention provides a self-resetting assembly type beam column joint based on sawtooth-shaped flange resetting connecting pieces and self-balancing disc spring web connecting pieces, and the self-resetting assembly type beam column joint mainly comprises a steel column with a cantilever beam section; a steel beam; the sawtooth-shaped flange self-resetting connecting assembly enables the steel beam and the cantilever beam section to be connected and fixed at the upper flange and the lower flange through sawtooth mechanical occlusion and disc spring bolts, sliding friction energy consumption is achieved through sawtooth mechanical occlusion, and self-resetting is achieved through the disc spring bolts; the self-balancing disc spring web connecting assembly connects and fixes the steel beam and the cantilever beam section at the web through a self-resetting disc spring set, and self-resetting is achieved through the self-resetting disc spring set. The self-resetting beam-column joint provided by the invention has an efficient composite self-resetting function, and can restore to an initial position after an earthquake is ended, so that residual deformation is remarkably reduced, and the post-earthquake repair cost is reduced.

The utility model relates to the technical field of noise reduction structures, and discloses a rapid assembly type acoustic hood which comprises a plurality of steel stand columns and a plurality of steel beams, the steel stand columns and the steel beams are connected through bolts and jointly form a supporting structure of the acoustic hood, and a top face sound absorption and insulation plate is arranged at the top of the acoustic hood. The top surface sound absorption plates are identical in modulus, and the wall surface sound absorption and insulation plates are identical in modulus. The top surface sound absorption plates and the wall surface sound absorption and insulation plates are connected in an embedded mode through mortise and tenon joint structures. The edge of the top face assembly is bent downwards, so that an installation space is formed on the bottom face of the structure, and the top face sound absorption and insulation plate is buckled to a supporting structure composed of the steel beam, the steel stand column and the wall face sound absorption and insulation plate through the installation space. The connecting mode between the top face / wall face sound absorption and insulation plates is changed into the mortise and tenon joint connection mode, and the top face sound absorption and insulation plates are buckled to the supporting structure, so that the technical problem that in the prior art, the cost and the sound insulation performance of an acoustic enclosure cannot be considered at the same time is solved.

The utility model discloses an overhanging type end plate lap step steel structure column, which increases the connection contact area with a steel column and a steel beam through the structural design on the premise of not influencing the universality and the adaptability of a steel column connection node, and solves the problems caused by too small contact area. An upper end plate of the end plate lap joint unit is vertically arranged on the upper side of the transverse lap joint column, the upper side of the upper end plate is higher than the upper side of the column flange plate, and a plurality of third connecting holes are formed in the upper end plate. The lower end plate is vertically arranged at the end, away from the connecting joint body, of the transverse lap joint column, the upper side of the lower end plate is flush with the upper side of the transverse lap joint column, the lower side of the lower end plate is lower than the lower side of the transverse lap joint column, and a plurality of first connecting holes in the same direction as the third connecting holes are formed in the lower end plate. The utility model can be widely applied to the field of fabricated buildings.

The invention relates to the technical field of building construction, in particular to an outer wrapping column formwork reinforcing device and a construction method.The outer wrapping column formwork reinforcing device comprises four fixing plates, two inserting cylinders are fixedly installed at the upper end of each fixing plate, the corresponding fixing plates and the inserting cylinders are placed on the periphery of a steel column base, the lower ends of first supporting rods are inserted into the inserting cylinders, and the lower ends of the second supporting rods are inserted into the inserting cylinders; a connecting plate is installed on the inner sides of every two adjacent first supporting rods, the left end and the right end of a formwork are inserted into the two adjacent connecting plates respectively and then clamped to the upper ends of the formwork and the connecting plates through U-shaped clamps, a plurality of sets of fixing parts are fixedly installed at the outer ends of the first supporting rods, and opposite-pulling plates abut against the outer ends of the first supporting rods. Meanwhile, the first supporting rods are reinforced through the opposite-pulling plates, the limiting frames and the second supporting rods of the corresponding number are inserted into the inner sides of the opposite-pulling plates according to needs, the outer ends of the second supporting rods make contact with the outer ends of the formworks, the formworks are further supported and reinforced, and the device is convenient to disassemble, assemble and reuse.

The invention provides a structure and method for reducing the steel consumption of a single-stand-column photovoltaic support steel column, and belongs to the technical field of photovoltaic support design. The structure comprises a cast-in-place pile, a steel column, an inclined strut, an inclined beam, a purline and a photovoltaic assembly; the steel column comprises a lower stand column and an upper stand column arranged above the lower stand column, and the installation position of the steel column is arranged outside the center of the photovoltaic module in a bias mode and coincides with the vertical projection of at least one row of purlines. Through the offset design, the bending moment of the column bottom is reduced by 20%-50%, the stability of the steel column is improved, and the deformation risk is reduced; after the column bottom bending moment is reduced, the section of the steel column can be optimized and reduced, and the steel consumption is reduced by 20-30%, so that the material cost is reduced; meanwhile, after the column bottom bending moment is reduced, the pile foundation bearing requirement is lowered, the size or depth of the cast-in-place pile can be reduced, the use amount of concrete is reduced, and therefore the construction cost is saved by 15%-25%.

The invention discloses a construction method of a spherical self-balancing steel latticed shell. The construction method comprises the following steps that 1, delta wing steel columns and an annular waist beam are installed; 2, a center ring beam is installed; 3, supporting columns are arranged at the top of the core tube, a roof unit is divided into an upper section and a lower section, main rod pieces are hoisted one by one, the lower ends of the main rod pieces are temporarily connected to the annular waist beam, the upper ends of the main rod pieces are supported on the supporting columns, and web members between the main rod pieces are installed; assembling an upper-section roof unit on the ground, hoisting the upper-section roof unit, temporarily connecting the upper end of the upper-section roof unit with the central ring beam, temporarily connecting the lower end of the upper-section roof unit with the lower-section roof unit, and welding the upper-section roof unit and the lower-section roof unit to form an integral roof unit; and 4, after two adjacent roof units are installed, the two roof units are connected through an inlaying rod. The problem that the construction progress is slowed down due to insufficient splicing space in a narrow site is solved.