263results about "Load-supporting elements" patented technology

Provided is a panel suitable as a floor, ceiling or wall panel, which panel is of a planar design having an upper side, a bottom side and side edges which include a first side edge provided with a first profile and a second side edge provided with a second profile. The first profile and the second profile are interacting profiles that can be coupled to each other, so that a first panel can be coupled in one common plane to a second, identical panel by the interacting profiles. The first profile and the second profile in coupled condition establish an interlocking with each other both in a horizontal direction and in a vertical direction. The first profile and the second profile are configured to allow for a coupling of the interacting profiles of the first panel with the second panel by a vertical insertion of the interacting profile of the first panel into the interacting profile of the second panel.

The invention discloses a ternary topological mixed truss girder based on steel-mixed-cable cooperative stress, and belongs to the technical field of constructional engineering, the ternary topological mixed truss girder comprises at least one single body structure, each single body structure is composed of an upper concrete body, a middle truss assembly and a lower prestress assembly from top to bottom, and each middle truss assembly comprises a web member and an inclined strut; the multiple web members are distributed in a linear mode at intervals, and the inclined struts are arranged between every two adjacent web members. The lower prestress assembly comprises anchoring seats and anchor cables, the multiple web members are each provided with one anchoring seat, and all the anchoring seats are connected through the anchor cables. According to the ternary topology hybrid truss girder, high rigidity of a pressed area and high strength and light weight of a pulled area are achieved, meanwhile, differentiation reinforcement of a midspan area is achieved, and stress coordination of multiple components is guaranteed. The invention further discloses a construction method of the ternary topology mixed truss girder based on steel-mixed-cable collaborative stress.

The invention relates to the technical field of simulation calculation, in particular to a simulation calculation method of a U-shaped steel-encased-concrete composite beam, which comprises the following steps: S1, establishing a two-parameter interface equivalent stiffness model of the U-shaped steel-encased-concrete composite beam with a rear anchor bolt; s2, solution and response extraction; s3, calculating a slip residual error and interface energy, and judging whether a target slip feature is met or not according to a double-convergence criterion; if the convergence requirement is not met, adaptively updating the interface parameters and returning to S2 for repeated solution, and if the convergence criterion is met, applying the converged interface rigidity parameters to design feedback of pretightening force selection of the rear anchor bolts and anchor bolt spacing and node construction of the rear anchor bolts. According to the method, the two-parameter interface equivalent stiffness model and the adaptive algorithm based on the slip residual error enable the interface normal stiffness and the interface tangential stiffness to be automatically converged to the target slip characteristic, manual parameter adjustment is avoided, the simulation stability and the calculation precision are improved, and integration of composite beam structure design and simulation analysis is achieved.

The invention discloses a construction method of a large-span string steel-wood composite structure, which belongs to the technical field of steel-wood composite structure construction, and comprises the following steps: symmetrically setting up two groups of sliding trolleys in the middle of a three-layer concrete floor and steel upright posts and facade steel frames in the middle, welding a splicing bracket and an operating platform at the top of the trolleys, and completing midspan component splicing and initial tensioning; after installation of the remaining steel stand columns and the facade steel frame is completed, the steel stand columns and the facade steel frame sequentially move towards the outer side till assembly and initial tensioning of all components are completed; and then secondary cable force fine adjustment is carried out on the whole steel inhaul cable. In this way, in-situ assembly is conducted from the sliding platform erected on the three-layer concrete floor to the designed elevation of the lower chord wood arch, and the integrity of a steel-wood structure and the installation quality of a steel-wood roof in the whole construction process are guaranteed; during tensioning in the construction process, at least two main structures are connected together through the secondary beams, and the out-of-plane instability risk caused by single-truss tensioning is avoided.

The utility model provides a section bar and a mobile office cabin, a hexagonal support frame is formed by connecting section bars end to end, two sides and two ends of a support plate are respectively installed in a first installation groove and a second installation groove, the section bar comprises a fixed part and a support part, the support part is located on one side of the fixed part, the cross section of the fixed part is of an L-shaped structure, and the cross section of the support part is of a U-shaped structure. The cross section of the supporting part is of a fan-shaped structure, the first outer side wall of the fixing part and the first outer side wall of the supporting part form a first mounting groove, the second outer side wall of the fixing part and the second outer side wall of the supporting part form a second mounting groove, and the first mounting groove and the second mounting groove are respectively used for mounting plates. According to the sectional material and the movable office cabin, the fixing part and the supporting part of the sectional material are of the machining integrated structure, the first mounting groove and the second mounting groove are formed in the sectional material in a matched mode so as to be used for fixing plates and facilitating construction and assembly of workers, the arc face of the fan-shaped structure can avoid right angles and daily rubbing, and attractiveness is considered.

The application relates to a construction method suitable for a dense longitudinal ribbed steel reinforced concrete beam, which comprises the following steps: installing a first open hoop at the bottom of a beam body on one side of a column; installing a bottom rib at the bottom of the beam body and binding the bottom rib with the first open hoop; arranging a steel beam between the first open hoop; arranging a second open hoop at a column-beam joint and connecting the second open hoop to the end of the steel beam; arranging a top rib and a third open hoop at the upper part of the beam body; arranging a first rib body and a second rib body of an adjacent span beam on the other side of the column; installing a formwork on both sides of the beam body after the column is poured; and pouring concrete in the formwork to form the steel reinforced concrete beam. The steel rib of the steel reinforced concrete beam is bound first, and then the steel rib of the adjacent span beam is bound, so that the construction sequence is optimized, the conflict between the steel beam and the adjacent span beam can be effectively avoided, the steel beam and the column are effectively connected through the second open hoop, the stable connection of the beam-column joint is realized, and the construction efficiency and quality are improved.

A boom deployer to deploy or retract a deformable boom includes a boom deployer frame. An integrated motor-spool assembly is translatably mounted in the boom deployer frame. At least one belt tensioning assembly is also translatably mounted in the boom deployer frame. The belt tensioning assembly tensions at least one recirculating belt which rolls over a roller of the belt tensioning assembly. The at least one recirculating belt is configured to roll over a rolled deformable boom, the deformable boom clamped to and rolled on the integrated motor-spool assembly. A boom deployer with a tensioned stationary belt is also described.

The invention relates to the technical field of constructional engineering, and discloses a factory building large-span steel-concrete composite beam which comprises a steel beam body, a connecting assembly is fixedly connected to the upper surface of the steel beam body, a concrete plate is fixedly connected to the upper surface of the connecting assembly, and a hole is formed in the steel beam body; and baffles are slidably connected to the interiors of the two sides of the steel beam body, grips are fixedly connected to the outer walls of the baffles, supporting ribs are fixedly connected to the interior of the steel beam body, and the center points of the supporting ribs correspond to the center points of the holes. The connecting assembly is additionally arranged between the steel beam body and the concrete slab, so that under the large-span condition, loads can be effectively dispersed and transmitted, the bearing capacity of the composite beam is improved, the composite beam adapts to the complex stress environment of a plant, meanwhile, thermal expansion and cold contraction stress can be buffered, supporting can be assisted through gas pressure, and the service life of the composite beam is prolonged. And the structural stability of the composite beam under the temperature change is improved.

The utility model provides a steel and concrete composite beam which comprises a bridge deck slab and a composite rib plate located on the bottom face of the bridge deck slab, the composite rib plate comprises a concrete rib plate and a steel beam, and the concrete rib plate is located between the bridge deck slab and the steel beam; the steel beam comprises a steel bottom plate and a steel web plate arranged on the steel bottom plate, steel tenons and mortises are alternately arranged on the upper edge of the steel web plate in the longitudinal bridge direction, and the steel tenons and the mortises are embedded in concrete at the lower end of the concrete rib plate; the steel webs and the concrete rib plates are connected together through the steel tenons, the mortises, the lower opening stirrups, the upper opening stirrups and the transverse short steel bars, and compared with an existing stud shear key connection mode, the connection mode has higher initial rigidity, shear strength and ductility; meanwhile, welding is not needed, welding defects and residual stress are avoided, the corners of the steel tenons and the mortises adopt arc chamfers, stress concentration is effectively avoided, and the anti-fatigue performance is excellent.

The FRP concrete filled steel tube composite beam with the bolt pins comprises a rectangular thin-wall square tube and an FRP core tube with the same length as the rectangular thin-wall square tube, and the FRP core tube is arranged in an upper compression area in the rectangular thin-wall square tube. Inter-pipe filling materials are arranged between the FRP core pipe and the rectangular thin-wall square pipe, and the FRP core pipe is filled with core pipe concrete; steel bolts penetrating through the rectangular thin-wall square tube are evenly distributed on the top face or the side face of the rectangular thin-wall square tube in the length direction, the steel bolts penetrate through the center of the cross section of the FRP core tube, and extension sections are reserved at the positions, on the surface of the rectangular thin-wall square tube, of the two ends of each steel bolt. The FRP material has excellent tensile property, and after the FRP core pipe is arranged in the structure compression area, the concrete performance of the compression area is remarkably improved through the constraint effect provided by the FRP core pipe. By arranging the steel bolts penetrating through the whole structure, the bonding performance between the inter-pipe filling material and the inner wall of the steel pipe is improved, the interface slippage amount is reduced, and the bearing capacity and ductility of the test piece are improved. And the filling material between the pipes adopts the combination of concrete and polyurethane foam, so that the self weight of the structure can be effectively reduced.

The present invention provides a design method and manufacturing method for a concrete-filled welded box-shaped cross-sectional member, as well as a concrete-filled welded box-shaped cross-sectional member, which can appropriately calculate the maximum concrete pouring height into the interior of a welded box-shaped cross-sectional member in which the corner welds are joined by partial penetration welding. [Solution] A design method for a concrete-filled welded box-shaped cross-sectional member, in which concrete is poured into the interior of a welded box-shaped cross-sectional member, the corner welds being joined by partial penetration welding, wherein a cross-sectional model is set in which the corners of the cross-section of the welded box-shaped cross-sectional member are rotational springs and the flat portions of the cross-section are bending elastic beams, the amount of deformation and stress generated in the cross-section when the pressure of the concrete poured into the interior of the welded box-shaped cross-sectional member acts on the cross-section is calculated using the cross-sectional model, and the maximum pouring height of the concrete is calculated such that the calculated amount of deformation is less than the allowable deformation of the cross-section and the calculated stress is less than the allowable stress of the cross-section.

The present application discloses a cast-in-place beam cantilever support structure, which comprises a wall body, the wall body is fixedly connected with a cantilever beam, the wall body and the cantilever beam are internally provided with an I-shaped steel, the I-shaped steel is provided with a reinforcing structure at one end of the wall body, a mounting plate of the reinforcing structure is arranged in the wall body, the mounting plate is fixedly connected with one end of the I-shaped steel through brazing, extrusion blocks are arranged on both sides of the mounting plate, the extrusion blocks are tightly connected with the I-shaped steel, the I-shaped steel of the reinforcing structure is arranged in the wall body and the cantilever beam to reinforce the connection between the wall body and the cantilever beam, the extrusion blocks are in close contact with the I-shaped steel, which plays a certain auxiliary role in resisting deflection deformation of the cantilever beam; the cantilever beam comprises a first pouring part and a second pouring part, the I-shaped steel below the construction opening between the first pouring part and the second pouring part is provided with a connecting structure, the I-shaped steel between the first pouring part and the second pouring part can reinforce the connecting part, and the transverse rib of the connecting structure can resist the transverse deformation of the cantilever beam in the transverse section.

The present invention provides a prefabricated building structure, a building assembled with the prefabricated building structure, and its method for assembly. In one embodiment, said prefabricated building structure comprises: a) an upper floor slab, including at least one column, with each of the said at least one column comprises a movable connection end and a free end; b) a lower floor slab, including at least one column slot, with each of the said at least one column slot positioned to correspond to the movable connection end; c) a spacing slab, including a set of guide rails; wherein the spacing slab is positioned between the lower floor slab and the upper floor slab; said at least one column is initially in a horizontal position and adopts an upright position when the free end is guided by the guide rails into a corresponding column slot after the upper floor slab is raised.

The utility model discloses a kind of steel reinforced concrete structure construction support frame, it is related to steel reinforced concrete construction technical field, its technical key points include support crossbeam, frame body, lateral support piece, bottom support piece and steel positioning piece, multiple the frame body evenly lap joint on support crossbeam, the frame body includes cross bar and the L type support rod of fixed connection in the both ends of cross bar, the cross bar is set above formwork, two the L type support rod is respectively set in formwork two sides, formwork is provided with steel in, the lateral support piece is set in the side of L type support rod, the bottom support piece is set in the bottom of L type support rod, the steel positioning piece is set in the upper and lower two sides of steel. Technical effect is by setting support crossbeam, frame body, lateral support piece, bottom support piece and steel positioning piece, need not to support scaffold, can directly support formwork, save space, improve construction efficiency.

The utility model discloses belong to building aluminium profile technical field, concretely is a kind of building aluminium profile of high temperature resistance, including building aluminium profile body, the surface of building aluminium profile body is equipped with high temperature resistant coating, connecting assembly is equipped between building aluminium profile body and the high temperature resistant coating to be able to improve the adsorption of high temperature resistant coating. The high temperature resistant coating is formed by phosphate lead powder paint. The connecting assembly includes first vertical micro -groove, the surface of building aluminium profile body is equipped with a plurality of first vertical micro -groove. The utility model is by setting connecting assembly between building aluminium profile body and high temperature resistant coating, has realized when phosphate lead powder paint is painted on building aluminium profile body, not only will strengthen mechanical bite, but also will increase effective attachment area, to be able to improve the adsorption of high temperature resistant coating, reduce the falling phenomenon of high temperature resistant coating.

The invention discloses a high-stability steel frame concrete solid-web composite beam and a manufacturing method thereof. The high-stability steel frame concrete solid-web composite beam comprises an upper steel beam and a lower steel beam. The upper steel beam and the lower steel beam comprise rib lapping plates which are arranged in the length direction of the upper steel beam and the lower steel beam. The upper end and the lower end of the connecting plate are welded to the inner walls of the upper steel beam and the lower steel beam respectively, and sealing cover plates are symmetrically welded to the two sides of the middle of the connecting plate. High-strength parts such as steel bars or truss angle steel are selected as the connecting parts, and the connecting parts are welded to the side faces of the rib lapping plates, so that connection and fixation are achieved; the pouring concrete is filled in a region cavity enclosed by the upper steel beam, the lower steel beam and the sealing cover plates at the two ends; the convex edges are arranged on the outer sides of the close edges of the upper rib lapping plate and the lower rib lapping plate in the length direction in a penetrating mode and used for generating gaps when follow-up connecting pieces are attached, the pi-shaped steel beam design is provided, welding gaps can be formed between steel bars and the rib lapping plates, welding flux can fully enter the welding gaps during welding, then stable welding is formed, and the connecting strength is greatly improved.

The utility model provides a steel reinforced concrete combined wide flat beam, and relates to the technical field of wide flat beams, the steel reinforced concrete combined wide flat beam comprises a wide flat beam main body, an anti-seismic assembly is arranged in the wide flat beam main body, first slotted holes are formed in the interiors of the two sides of the anti-seismic assembly, and first springs are connected in the first slotted holes; a first damping push plate is connected to the top of the first spring, a top block is connected to the top of the first damping push plate, a second slotted hole is formed in the side, close to the first slotted hole, of the wide flat beam body, a second spring is connected to the interior of the second slotted hole, and a second damping push plate is connected to one side of the second spring. According to the anti-seismic wide flat beam, when the wide flat beam body is installed and vibrates, the effective anti-seismic effect can be achieved through the first springs and the second springs, the guide plate and the guide groove are arranged, the guide effect can be achieved during seismic resistance, and the structural stability and the safety during use are improved.

The invention relates to a composite beam having a hollow profile (2). The invention relates to a hollow profile (2) comprising or consisting of aluminum or an aluminum alloy or other material, the hollow profile (2) having an inner space (4) and a core (3) arranged in the inner space, the core (3) comprising or consisting of wood. The core (3) is arranged without play in the interior (4) and is pressed against an inner wall (8) of the hollow profile (2) from each side in the cross-sectional direction. The invention also relates to a method and a device.

The utility model provides a truss, a plate component and a building component. The truss comprises a concrete upper chord and web members, the concrete upper chord is strip-shaped and comprises a main body part formed by concrete; the overall length direction of the web members is consistent with the first direction, and the top ends of the web members are fixedly arranged in the concrete upper chord; the first direction is consistent with the length direction of the concrete upper chord; the two web members are symmetrically arranged at intervals in the second direction, the planes where the two web members are located intersect, and the intersecting line is located above the concrete upper chord; the second direction is consistent with the width direction of the concrete upper chord. According to the embodiment of the invention, the distance between the bottom ends of the web members can be increased under the condition of the same truss height, and the force transmission area between the bottom of the truss and the plate structure is increased in the plate member formed by the bottom of the truss and the plate structure, so that the bearing capacity and the stability of the plate member are improved.

The utility model provides an archaized building folk house wood joist reinforcing structure which comprises an installation plate, the installation plate is fixedly installed on a cement structure through four expansion bolts, a steel beam fixedly installed on the installation plate is located in wood joists, filling wood joists are arranged in the wood joists, namely the upper portion and the lower portion of the steel beam, and wood joist plugs are installed on the two sides of the steel beam. A wood joist arm integrally arranged on the packaging wood joist is inserted into the wood joist and is matched with the wood joist plug; the bearing capacity and the shock resistance of the wood joist are greatly improved, and the wood joist perfectly adapts to the modern environment and complex loads. The shape and size of the steel beam are adjustable, structural flexibility is enhanced, installation and maintenance are simplified, cost is reduced, and environmental damage is reduced. Meanwhile, steel and wood are reasonably utilized, the strength stability is guaranteed, the material utilization rate is increased, the sustainable development concept is practiced, and the building cost is effectively reduced. As a whole, the archaized building wood joist is attractive, practical and economical, and is an ideal choice for archaized building wood joist reinforcement.

The invention relates to an emergency rescue engineering structural column and a mounting and recycling method. The emergency rescue engineering structural column comprises a folding type annular air bag and a plurality of annular air bag bodies, wherein the folding type annular air bag is composed of a plurality of overlapped air bag ring bodies; the air bag bearing frame is arranged between at least two adjacent air bag ring bodies of the plurality of overlapped air bag ring bodies; the unmanned aerial vehicle flight system comprises a rack and a flight control system, the rack is installed on the air bag bearing frame, and the flight control system is arranged on the rack; the automatic air inflation system comprises automatic air inflation equipment and an air inflation control system, the automatic air inflation equipment is arranged on the air bag bearing frame, and the air inflation control system is arranged on the rack; and the power supply system is used for supplying power to the unmanned aerial vehicle flight system and the automatic inflation system. The invention aims to solve the problem of urgency in emergency rescue in a disaster area so as to effectively improve the temporary emergency supporting capacity for an endangered collapse structure.

To provide a rigidity evaluation method for a steel beam in a mixed construction beam for expecting a composite effect of the steel beam and a RC building in the mixed construction beam and evaluating the rigidity of the steel beam by an effective clear span.SOLUTION: It is assumed that virtual horizontal external force acts at three locations at a central position and both sides of a steel beam, the virtual horizontal external force is separated into torsion moment and horizontal component force of the steel beam in a cross section of the steel beam, a torsion angle θse of the center of the steel beam due to the virtual horizontal external force is evaluated, rigidity of the steel beam is evaluated by an effective clear span Le of the steel beam, the torsion angle θse is shown by formula (1), it is assumed that an assumed beam made only in the same steel as the steel beam is stretched between columns, an equivalent rigid zone length ΔL from a position where the torsion angle θse is 0 to an end of the assumed beam satisfies formula (2) and the effective clear span Le of the steel beam is obtained by subtracting 2ΔL which is double of the equivalent rigid zone length from a clear span L of the steel beam as Le=L-2ΔL.SELECTED DRAWING: None

The utility model relates to the technical field of building construction, in particular to a novel channel steel structure which comprises a channel steel body, a sliding through hole is formed in the center of the front side of the channel steel body, a positioning splicing mechanism is arranged in an inner cavity of the sliding through hole, and the positioning splicing mechanism comprises a sliding connecting piece. And the surface of the sliding connecting piece slides on the inner wall of the sliding through hole. Through cooperative use of the sliding connecting piece, the sliding through hole, the channel steel assembly, the positioning through hole, a guide groove, a positioning hole, a threaded rod and a splicing insertion hole, the sliding connecting piece can move in an inner cavity of the sliding through hole by manually sliding the sliding connecting piece in the use process, and after the sliding connecting piece moves to a proper position, an anti-skid knob is manually rotated, so that the splicing is completed. And the upper threaded rod and the lower threaded rod are driven to rotate, so that the threaded rods are driven to extend into the inner cavities of the positioning holes in a threaded transmission manner to fix the positioning holes, and the position of the sliding connecting piece is fixed.

The invention relates to a prefabricated steel-concrete composite beam and a construction method thereof, the prefabricated steel-concrete composite beam comprises four steel plates which are parallel to one another and are arranged in a rectangular shape in the circumferential direction, a gap is reserved between every two adjacent steel plates in the circumferential direction, a fixing rod is welded between every two adjacent steel plates, concrete is poured among the four steel plates, and the matching sections of the four steel plates and the concrete are rectangular; comprising the following steps that S1, firstly, four steel plates are spliced into a whole through fixing rods; and S2, a formwork is built, the whole formed through splicing is put into the formwork, then concrete is poured into the formwork, the concrete is air-dried and solidified after being vibrated, and the formwork is taken out after forming. The method has the advantage that the use performance of the steel-concrete composite beam is improved.

The utility model relates to an embedded hoisting device and a precast concrete member, the embedded hoisting device comprises a steel wire rope, two connecting sleeves and two anchoring parts, and the two ends of the steel wire rope are connected with one ends of the two connecting sleeves in an extrusion mode respectively; one ends of the two anchoring parts are in extrusion connection, threaded connection or welding with the other ends of the two connecting sleeves respectively; the anchoring part is a steel bar or a steel bar. The embedded hoisting device composed of the steel wire rope, the connecting sleeve and the anchoring part is used, so that the bearing capacity of a hoisting piece is improved, a special hoisting tool is not needed, an exposed part does not need to be cut off, and meanwhile, the embedded hoisting device can be suitable for a thin precast concrete member.

To provide a precast concrete beam, a timbering receiving structure, and a method for constructing and removing timbering, capable of extracting a receiving member for supporting the timbering and reusing the receiving member.SOLUTION: A precast concrete beam 12 is constructed so that a sheath tube 14 is longitudinally buried in a concrete part 30 and a top end 14 A of the sheath tube 14 is lower than a top end 38 A of a slab concrete 38 cast on the beam.SELECTED DRAWING: Figure 1

Method and press for producing a curved laminated wood module including a plurality of laminated veneer lumber (LVL) boards, where the press includes a convex mold, where the mold is arranged on a frame, and where the press includes an upper part adapted to be placed on the plurality of LVL boards, where the press further includes a plurality of pulling brackets and pulling means attached between the frame and the pulling brackets, where the pulling means are arranged to pull the pulling brackets towards the frame until the plurality of LVL boards bears completely on the mold.

The utility model discloses a high-strength steel member which comprises a steel body, a plurality of reinforcing ribs are fixedly installed on the outer surface of the steel body, a plurality of supporting steel plates are fixedly installed in an inner cavity of the steel body, the supporting steel plates are arranged in a herringbone shape, and a plurality of supporting columns are fixedly installed on the left side and the right side of the inner cavity of the steel body. Two fixing plates are fixedly mounted on each of the left portion and the right portion of the steel body, and the problems that when a steel member bears axial pressure or bending moment and is locally stressed, the buckling stability of the hollow steel member is low, and instability is prone to occurring are solved. According to the technical scheme, the high-strength steel member is provided. According to the hollow steel member, the herringbone supporting steel plate is arranged in the steel body, the supporting columns are arranged on the left side and the right side of the inner cavity of the steel body, and the reinforcing ribs are arranged on the outer surface of the steel body, so that the buckling stability and the instability resistance of the hollow steel member can be remarkably improved when the hollow steel member bears axial pressure, bending moment and local stress.