296 results about "I-beam" patented technology

The invention discloses a construction technology for prefabricating a corrugated steel web PC I beam into a combined box girder bridge. Each combined box girder segment in a combined box girder of the combined box girder bridge is formed by connecting two corrugated steel web PC I beams. The construction technology comprises the following steps: Step I, prefabricating the corrugated steel web PC I beams: pedestal prefabricating construction, installation of a soffit formwork, installation of a reinforcement cage in a bottom plate, installation of a corrugated pipe in the bottom plate, installation of a positioning bracket and erection of a side formwork, installation of a corrugated steel web, pouring of concrete on the bottom plate, installation of a top plate molding template, installation of the reinforcement cage in a top plate, pouring of concrete on the top plate, and stretch-drawing of a cable in the bottom plate; Step II, displacement and erection of the corrugated steel web PC I beams; Step III, lengthways wet joint construction; Step IV, stretch-drawing of a cable out of the bottom plate and system conversion. According to the invention, the processing steps are simple, the design is reasonable, the implementation is convenient, the construction period is short, the construction quality is high, pedestal prefabricating and the positioning bracket are combined to complete bridge prefabrication, and the construction quality of the combined box girder bridge can be effectively ensured.

The invention discloses an assembling multi-section beam center support steel frame capable of self-centering after earthquake. An I-beam is connected with special-shaped columns of different forms through a web angle steel and a flange angle steel to form a connecting form of full bolts without weld seams; a middle I-beam is connected with an end I-beam through a web connecting plate and a high-strength silicone rubber plate to form a connecting form of full bolts without weld seams with good ductility and high energy consumption; a prestressed steel cable is applied at the connecting part ofthe full bolts without the weld seams of the middle I-beam and the end I-beam to form self-centering nodes after the prestressed earthquake, and after the nodes are connected in sequence, a precast concrete-profiled steel plate composite slab or a poured concrete slab is assembled to form an assembling multi-section beam center support steel frame structure system capable of self-centering afterthe earthquake.

The invention provides a sky train body welding fixture and a welding method thereof. The sky train body welding fixture comprises a foundation fixture, a cross beam, a boundary beam clamping device,a boundary beam type block and an assistant support rod for assembly of a train body. The cross beam is installed across the foundation fixture. The boundary beam clamping device is positioned at twoends of the cross beam. The boundary beam type block is connected with the boundary beam clamping device. The foundation fixture comprises a longitudinal I beam, a horizontal I beam, a bottom plate, an adjusting bolt, a support rod component and a longitudinal reinforcing rib. The boundary beam clamping device comprises a cantilever mechanism, an upright structure and a bottom base. The upright structure is vertically installed on the bottom base. The cantilever mechanism is connected with the upright structure. The provided welding fixture has the characteristics of simple structure, novel design, convenient operation, and strong universality and is capable of effectively controlling the welding deformation, realizing the double functions of positioning and welding deformation resistance,guaranteeing the quality, reducing the labor intensity and improving the production efficiency.

The invention discloses an I beam burring device capable of being suitable for different specifications and relates to the field of burring devices. The I beam burring device capable of being suitablefor different specifications comprises a machine table, a polishing device and guiding devices. A roller bed is arranged in the machine table, the polishing device is arranged on the machine table, and the guiding devices are arranged on two sides of the polishing device. By controlling a telescopic rod of a transverse shifting driven hydraulic cylinder to stretch, two lifting hydraulic cylinderblocks are adjusted to move in an axial direction of a sliding shaft till two millstones are in contact with the side wall of an I beam. By driving the millstones by a polishing motor, the side wall of the I beam is polished to burr. Meanwhile, by controlling the telescopic rod of a lifting hydraulic cylinder to stretch, the millstones lift up and down, so that it is convenient to polish and burrthe side wall of the I beam comprehensively and effectively.

An I-beam having a web curved in two dimensions is used to provide an enhanced stiffness to weight ratio for molded plastic hangers. The I-beam includes first and second generally parallel flanges which extend in a longitudinal direction. The flanges are joined by a curved web, which is defined in part by first and second radii of curvature, wherein the radii are nominally orthogonal to each other.

The present disclosure teaches systems and methods for robotic welding of studs onto the surface of I-beams. These systems and methods will find industrial applicability in, for example, the steel erection industry.

The invention discloses a prefabricating construction process for a corrugated steel web prestressed concrete I-shaped beam. The process comprises the following steps: 101, constructing a prefabricated pedestal; 102, mounting a bottom die plate; 103, mounting a reinforcement framework in a bottom plate; 104, mounting a corrugated pipe in the bottom plate; 105, mounting a positioning bracket and supporting a side die plate, wherein the positioning bracket comprises a supporting frame, and a plurality of positioning rods for positioning a corrugated steel web; 106, mounting the corrugated steel web, namely, mounting the corrugated steel web is mounted above the reinforcement framework in the bottom plate, and positioning through the positioning bracket; 107, pouring the concrete of the bottom plate; 108, mounting a top plate molding die plate; 109, mounting the reinforcement framework in a top plate; 110, pouring the concrete of the top plate; 111, stretching an inner cable in a bottom plate body. The prefabricating construction process is simple in steps, reasonable in design, convenient to implement, short in construction period, and high in construction quality; the prefabricated pedestal is matched with the positioning bracket to finish the prefabricating of a beam body, and the quality of a prefabricated beam body can be effectively ensured.

The invention discloses a coastal environment high pier hydraulic self-creeping formwork construction method. The method comprises the steps of tower column starting section construction, tower columnfirst section construction, hydraulic creeping formwork installation, tower column second section construction, tower column remaining section construction and creeping formwork removal, the hydraulic creeping formwork comprises an embedded part mechanism embedded in a high pier wall, and a frame body mechanism comprises a lower hanging bracket and a bearing frame; the formwork installation comprises a formwork consisting of a panel, a woodworking I-shaped beam and a steel enclosing purlin, a movable template bracket and a backward moving device; a hydraulic power mechanism comprises an upperreversing box, a lower reversing box, a hydraulic pump and a hydraulic oil cylinder which are connected with the guide rail in a sliding manner; the guide rail is composed of two steel channels and guide rail stair stops, and the upper reversing pawl of the upper reversing box and the lower reversing pawl of the lower reversing box are arranged between the guide rail stair stops. The constructionmethod is convenient to operate, high in safety and convenient to construct, working hours and construction sites are saved, and formwork bumping damage is reduced; and the formwork is recycled, theworkload of hoisting machinery is greatly reduced, and the construction process is stable, synchronous and safe.

The invention relates to the field of building structures, in particular to a double-steel-pipe concrete beam-column joint with a built-in FRP rib connecting device. The double-steel-pipe concrete beam-column joint comprises double steel pipe columns, an I-shaped beam, a joint connecting piece, an inner supporting piece and an outer ring plate. The double steel pipe columns comprise inner steel pipes and outer steel pipes. The joint connecting piece comprises a connecting inner pipe and a connecting outer sleeve disc, and the connecting inner pipe and the connecting outer sleeve disc are bothround steel pipes. The inner supporting piece is of a columnar structure, and bolt holes are evenly distributed in the two ends of the inner supporting piece along the circumference. The outer ring plate comprises a horizontal part and an annular part which are perpendicular to each other. The upper-layer steel pipe column and the lower-layer steel pipe column are connected through the joint connecting piece and the inner supporting piece, the two ends of the inner supporting piece are inserted into the upper inner steel pipe and the lower inner steel pipe correspondingly, and FRP ribs sequentially penetrate through the annular part, the outer steel pipes, the connecting inner pipe and the inner steel pipes and then are fixed into the bolt holes of the inner supporting piece. According tothe double-steel-pipe concrete beam-column joint, the excellent tensile property and fatigue load resistance of the FRP ribs are utilized, the anti-seismic energy dissipation capacity of the joint iseffectively improved, and the safety and bearing capacity of the structure are enhanced.

The invention discloses a lock foot pile support structure for controlling tunnel initial support settlement convergence. The structure comprises an initial support in the tunnel grotto. A tilted lock foot pile is arranged at the outer wall of the initial support; the lock foot pile comprises a rotary jetting pile body, and the rotary jetting pile body is connected to an L-shaped steel core material. The other end of the L-shaped steel core material is connected with a connecting steel bar. The connecting steel bar is connected to an I beam steel frame of the initial support. The lock foot pile support structure for controlling the tunnel initial support settlement convergence has the advantages that the technical process is simple; the effected interference to the process conversion is less, the operation is convenient; the work efficiency is improved; the problems that the excavations of middle and lower steps cause the arch foot to be vacant, the side wall of the tunnel is unstable or the slippage and the grouting and anchorage effect of lock foot are poor are overcome; the stability of the palm surface, the deformation and settlement of the control cavern and the mechanized construction are achieved.

The invention discloses a roof steel structure. The roof steel structure comprises a concrete frame (1) encircled to form the roof contour, a plurality of main beams and a plurality of secondary beams, wherein the main beams and the secondary beams are arranged in the concrete frame (1). Each main beam is a beam string formed by a rigid beam (2), a lower chord rope (3) and a supporting rod (4). Each secondary beam is formed by a plurality of rigid secondary beam units (5). The two ends of the rigid secondary beam units located between two main beams are welded to the main beams on the two sides respectively. A roof steel structure construction process is further disclosed. The roof steel structure has the advantages that the matching application of the beam strings and the rigid beams is achieved, the beam strings and the rigid beams have complementary advantages, the roof steel structure has both the advantage of bearing vertical pressure through the beam strings and the advantage of bearing vertical and horizontal pressure and reverse pressure through the rigid secondary beams, so that the roof steel structure is good in stability; and compared with a rigid beam roof structure, the roof steel structure is light in self weight and convenient to construct.

The invention discloses a movable type suspension crane rocker arm drilling machine which is divided into a suspension crane and a radial drill. The movable type suspension crane rocker arm drilling machine comprises a base (11), a vertical column (7), a drilling machine gearbox (8), a horizontal arm (9) and a main shaft box (10), wherein a column body of the vertical column (7) is connected with the horizontal arm (9) in a sliding mode, the horizontal arm (9) is connected with the main shaft box (10) in a sliding mode, the drilling machine gearbox (8) is arranged on the horizontal arm (9) and the horizontal arm (9) is connected with a lifting lead screw (13) through variable gears. The bottom end of the vertical column (7) is connected with the base (11), and the top end of the vertical column (7) is connected with a vertical shaft (3). The vertical shaft (3) is connected with an I-beam rocker arm assembly (2). One end of the I-beam rocker arm assembly (2) is provided with a suspension crane electric block (1). According to the movable type suspension crane rocker arm drilling machine, two rocker arms do not interfere with each other and rotate independently. Polyester foaming is used to fill the vertical column space, so that the problem that the steel pipe vertical column is not good in shock absorption effect in the machining of a lathe is resolved, and the humming sound and the ringing sound occurring when the metal pipe is struck are avoided. The production quality of the vertical column is improved greatly and the cost of the vertical column of the lathe is reduced greatly.

The invention discloses a supporting system and a constructing technology for integrally pouring a composite floor slab and a wallboard. The supporting system comprises a bearing member, a member system and a supporting assembly, wherein the member system comprises the wallboard, a superposed beam, cast-in-place columns and the composite floor slab; the cast-in-place columns are arranged on the bearing member, the superposed beam and the wallboard are connected between the cast-in-place columns, the superposed beam is arranged above the wallboard, and the superposed beam comprises a precast beam and a cast-in-place beam arranged above the precast beam; the supporting assembly is arranged on the bearing member, a work space is arranged between the supporting assembly and the wallboard, andthe supporting assembly comprises a plurality of tripod type independent supports arranged on the bearing member and I beams arranged on the tripod type independent supports; the composite floor slabis arranged on the I beams, the lateral edge of the composite floor slab is attached to the superpose beam and/or the wallboard, and the composite floor slab comprises a prefabricated floor slab and acast-in-place floor slab arranged above the prefabricated floor slab. The supporting system has the advantages of simple structure, high whole strength, short construction time and ability in greatlyreducing total cost of the whole building construction.

The invention provides a large I-shaped beam welding platform and a welding method. The large I-shaped beam welding platform comprises first I-shaped steel and second I-shaped steel which are placed in parallel; multiple connecting plates are arranged between the first I-shaped steel and the second I-shaped steel; the first I-shaped steel and the second I-shaped steel are connected through the multiple connecting plates; positioning devices are arranged on the connecting plates respectively; a large I-shaped beam profile is placed in the positioning devices, the end surface of the large I-shaped beam profile is supported by cushion blocks, and the side surfaces of the large I-shaped beam profile are locked and fixed by bolts; all the positioning devices are ensured to be in one horizontalplane, a first vertical plate and a second vertical plate in each positioning device are perpendicular to a transverse plate, and the bolt on the second vertical plate are used for locking the right side plate of the large I-shaped beam; and by placing the large I-shaped beam on the platform, the perpendicularity and the parallelism between two plates during welding can be ensured, locking and fixing are firm, the welding deformation quantity is small, tool positioning and clamping are achieved, and mounting and welding in size are achieved into place with one step.

The invention discloses a fabricated floor slab wet connection knot and a connection method. The knot comprises a I-shaped beam, a first prefabricated floor slab and a second prefabricated floor slab;a plurality of studs are evenly fixed on the I-shaped beam; the first prefabricated floor slab and the second prefabricated floor slab are correspondingly located at two sides of the studs and form amounting groove; the first prefabricated floor slab is provided with a first groove; the first groove is internally provided with a plurality of first protruding steel bars; a first distributed steelbar is fixed on the plurality of protruding steel bars; the second prefabricated floor slab is provided with a second groove; the second groove is internally provided with a plurality of second protruding steel bars; a second distributed steel bar is fixed on the plurality of second protruding steel bars; corresponding second protruding steel bars and the first protruding steel bars are all interconnected and fixed through additional steel bars, and a plurality of U-shaped shear reinforcement bars are arranged at intervals in the mounting groove; and concrete is poured in the mounting groove,the first groove and the second groove.

The invention relates to a safe construction method of a cantilever platform on a cylinder body structure, and belongs to the technical field of building construction. According to the construction method, a steel truss, transverse H-shaped beams, a pull rod, a scaffold board and the like form a supporting system, and the supporting system and a main body structural are fixedly installed at high intensity through anchor plates, high-strength bolts, arch-shaped steel strips and the like; a steel pipe buckle scaffold is arranged on the supporting system, and a beam formwork and a plate formworkare supported through the steel pipe buckle scaffold; and finally, concrete is poured and cured. The construction method is economical and reasonable, the construction installation quality is high, aerial work is safe and reliable, safety and operability are very high, and the construction method is worthy of application and popularization.