33 results about "Shear transfer" patented technology

A prestressed or post-tensioned composite structural system for bridge floors, road beds, pedestrian walkways, building floors, building walls, or similar structural elements. The structural system comprises a composite structure comprising an unfilled grating as a base component, and a prestressed, post-tensioned reinforced concrete slab as a top component. The base grating component is preferably a plurality of main bearing bars without any distribution bars or tertiary bars. The upper portions of the main bearing bars are embedded in the concrete component permitting horizontal shear transfer and creating a composite deck structure which maximizes the use of tensile strength of steel and the compressive strength of concrete.

The composite joist floor system includes joists supported by supporting members. Corrugated steel decking is positioned over the joists such that the corrugations are substantially perpendicular to the joists. Self-drilling, self-tapping, stand-off screws are spaced along the length of the joist, aligned with the deck corrugations. These stand-off screws provide the required shear transfer between the joist and concrete slab to form a composite floor system. The placed concrete encapsulates the upper non-threaded shank portions of the stand-off screws and the end of the joists. After the concrete has cured, the resultant system comprised of steel joists, steel decking, stand-off screws, and concrete, act together to form a composite system with greater load carrying capacity and less vertical deflection. The stand-off screws connect the joist upper chords to the concrete slab allowing the joist and concrete slab to act as a unit, by transferring shear between the two joined components.

A wall either wholly or partially made from a shear-resisting assembly that has a shear transfer device, or plate, disposed between the bottom strut and the underlying foundation. The shear transfer device joins the two anchor bolts, eliminating intermediate foundation bolts by transferring lateral shear loads to the anchor bolts in combination with the bottom strut.

A system and method of constructing a composite floor system having increased shear transfer between a slab and support members of the system is described. The composite floor system may include any combination of the following elements: a support member, a reinforcing member, a transfer member, a decking material, a fastener, and / or a slab.

A system and method of constructing a composite floor system having increased shear transfer between a slab and support members of the system is described. The composite floor system may include any combination of the following elements: a support member, a reinforcing member, a transfer member, a decking material, a fastener, and / or a slab. The transfer member may be connected to the support member.

The composite joist floor system includes joists supported by supporting members. Corrugated steel decking is positioned over the joists such that the corrugations are substantially perpendicular to the joists. Self-drilling, self-tapping, stand-off screws are spaced along the length of the joist, aligned with the deck corrugations. These stand-off screws provide the required shear transfer between the joist and concrete slab to form a composite floor system. The placed concrete encapsulates the upper non-threaded shank portions of the stand-off screws and the end of the joists. After the concrete has cured, the resultant system comprised of steel joists, steel decking, stand-off screws, and concrete, act together to form a composite system with greater load carrying capacity and less vertical deflection. The stand-off screws connect the joist upper chords to the concrete slab allowing the joist and concrete slab to act as a unit, by transferring shear between the two joined components.

The invention relates to a rapid assembling type steel box-precast concrete plank bridge structure and a construction method thereof. The structure comprises a plurality of steel box beams, a precast concrete deck panel and a shear transfer device, wherein the steel box beams are arranged at equal intervals, and every two adjacent steel box beams are connected through a truss type horizontal connector and a solid-web horizontal connector; an upper flange is arranged on the upper portion of each steel box beam, and horizontal connectors are welded between the upper flanges; the precast concrete deck panel is arranged on top of the steel box beams, and the shear transfer device is vertically welded to the upper flanges and inserted into the precast concrete deck panel. According to the structure, the industrial precast degree is high, construction quality is reliable, site assembly is quick, and interference with under-bridge traffic in the construction period is reduced due to the fact that the support-free construction technique is adopted.

A highway crash barrier structure with an improved interlocking system includes a plurality of rigid sections disposed end-to-end in interlocking relationship with one another. The ends of each rigid upright section are provided with a reshaped JJ Hooks® connection. Each hook member has an extending vertical lip which is bent into a “J” shaped cross-section to engage a similar lip on the hook member of the adjacent section such that lateral movement of the respective sections is prevented. However, the respective sections of the system can be easily placed or removed by vertically displacing them. In addition, the interlocking plates at each end of the upright sections are vertically lengthened while the number of bars welded to the plate is increased to reduce the rotational moment of the sections and increase shear transfer between adjacent sections. Furthermore, connections include deflection limitation stops located at the lower part of each end of each upright section which prevents spalling and decreases deflection during a crash. The deflection stops can be positioned wholly within the rigid sections or can protrude partway out the bottom of the sections for particular applications.

The present application relates a core member for a core-stiffened structural assembly. The core member includes a plurality of cell members oriented a direction to provide a tailored stiffness in a certain direction. The core member can further include one or more planar members that can aid in shear transfer between cell members. The cell members can be made from bonding a plurality of corrugated layers together. The core-stiffened structure can be a rotor blade for an aircraft. In such an embodiment, the torsional stiffness of the rotor blade can be tailored in at least one of the chordwise and spanwise directions to provide tailor a torsional stiffness at any give location in the rotor blade.

The invention discloses a structure of connection of a circular steel tube type lightweight aggregate concrete beam and a through reinforcing steel bar of a concrete pier and a construction process thereof. The structure comprises a circular steel tube type lightweight aggregate concrete beam, a shear transfer steel plate, a through reinforcing steel bar, a bending moment transfer steel plate, a welding reinforcing steel bar, a reinforced concrete pier and a transfer steel rib, wherein the through reinforcing steel bar penetrates through the circular steel tube of the circular steel tube type lightweight aggregate concrete beam and is then welded, and the bending moment transfer steel plate is welded on the through reinforcing steel bar to realize the overall connection of a joint and the circular steel tube type lightweight aggregate concrete beam. The invention realizes the plant manufacture of the steel joint connecting component, and adopts the through reinforcing steel bar as the connecting component so that the circular steel tube type lightweight aggregate concrete beam and the reinforced concrete pier can form a rigid joint; since lightweight aggregate concrete is cast in the circular steel tube, the invention reduces the dead weight of the superstructure and the foundation load; and the transfer path of the rigid joint is definite, the bearing capacity can meet the design requirements, and the anti-seismic performance is good.

The invention discloses an assembly type hollow slab bridge and a construction method thereof. The assembly type hollow slab bridge comprises hollow slabs which are transversely and continuously arranged in sequence; two adjacent hollow slabs are connected together through joist steel; two opposite longitudinal side edges of two adjacent hollow slabs are clamped into notches in both sides of the joist steel respectively; the longitudinal side edges of the hollow slabs are straight edges; the longitudinal-extending side faces of the hollow slabs are straight faces. The construction method of the assembly type hollow slab bridge is a construction method for realizing the hollow slab bridge. By adopting the assembly type hollow slab bridge and the construction method thereof, the transverse integrity of the hollow slab bridge can be enhanced, and the shear transfer capacity among the hollow slabs is increased.

A mattress cover is disclosed for redirecting shear on a patient's skin away from the areas of the body relatively more likely to develop decubitus ulcers. The mattress cover includes an upper portion designed to cover the topside of a mattress, and at least one shear transfer zone attached to an underside of the upper portion of the mattress cover. The shear transfer zone(s) may be made of a low shear material so as to create a low friction interface between the mattress and the mattress cover to reduce shear forces exerted by the mattress. Additionally, the shear transfer zone(s) may be arranged such that a large portion of the shear forces exerted by the mattress can be redirected to areas of the body that are relatively less likely to develop decubitus ulcers.

A support assembly for mounting masonry veneer to supporting wall structure has a first shelf angle, a second shelf angle, and a first shelf angle mounting bracket. Each shelf angle mounting bracket has an upwardly extending back that mounts to the supporting wall structure, and a web extending forwardly away from the wall structure. The web has at least a first shelf angle mounting seats formed in a lower region thereof that hangs downwardly of a vertical load shear transfer connection. A brace is mounted to the bracket. The brace underhangs the cantilevered supporting structure, and provides a moment reaction. The brace has a non-intrusive interface with the supporting structure. That interface may be in compression and the brace may act as a strut. The brace may be thermally isolated from the bracket. The brace may fit within the space envelope of a stud wall.

A support assembly for mounting masonry veneer to supporting wall structure has a first shelf angle, a second shelf angle, and a first shelf angle mounting bracket. Each shelf angle mounting bracket has an upwardly extending back that mounts to the supporting wall structure, and a web extending forwardly away from the wall structure. The web has at least a first shelf angle mounting seats formed in a lower region thereof that hangs downwardly of a vertical load shear transfer connection. A brace is mounted to the bracket. The brace underhangs the cantilevered supporting structure, and provides a moment reaction. The brace has a non-intrusive interface with the supporting structure. That interface may be in compression and the brace may act as a strut. The brace may be thermally isolated from the bracket. The brace may fit within the space envelope of a stud wall.

The invention discloses a plate shearer rear discharging bearing and shearing conveying line. The plate shearer rear discharging bearing and shearing conveying line comprises a machine frame; two ends of the machine frame are provided with conveying wheels; a conveying belt is connected between the conveying wheels at two ends; the conveying belt is connected with a driving component through a transmission assembly; one end of the machine frame is provided with a rotary shaft which horizontally penetrates the internal conveying belt; at least two ends of the rotary shaft are both provided with a supporting arm; the supporting arms comprise supporting plates; end portions of the supporting plates bend towards one side to be provided with bearing plates; a transmission plate is fixed on the rotary shaft; the transmission plate is connected with a driving air cylinder; the bearing plates are parallel to the conveying belt when the supporting arms are ejected. According to the plate shearer rear discharging bearing and shearing conveying line, the driving air cylinder drives the transmission plate and accordingly drives the rotary shaft to rotate and rotation of the rotary shaft drives the supporting arms to perform rotation in fixed angles to lift up plates on the conveying line, so that rear blocking materials cannot block materials caused by material drooping is avoided and the stable shearing plate size and the section angle accuracy are guaranteed.

A mattress cover is disclosed for redirecting shear on a patient's skin away from the areas of the body relatively more likely to develop decubitus ulcers. The mattress cover includes an upper portion designed to cover the topside of a mattress, and at least one shear transfer zone attached to an underside of the upper portion of the mattress cover. The shear transfer zone(s) may be made of a low shear material so as to create a low friction interface between the mattress and the mattress cover to reduce shear forces exerted by the mattress. Additionally, the shear transfer zone(s) may be arranged such that a large portion of the shear forces exerted by the mattress can be redirected to areas of the body that are relatively less likely to develop decubitus ulcers.

The invention discloses a hollow floor with permanent composite modules and its implementation method. The hollow floor includes upper steel bars, lower steel bars, concrete and composite modules. The composite modules are located between the upper steel bars and the lower layer steel bars. Permanently buried in the concrete, place the composite module in the specified position according to the shear force transmission direction, the orientation of the composite module is consistent with the shear force transmission direction in the slab where it is located, and the orientation of the composite module is the direction of the combination In the length direction of the rod-shaped filler in the module, the present invention is suitable for one-way slabs and two-way slabs. The hollow slabs of the present invention are light in weight, good in sound insulation and heat insulation, and have better structural reliability, shock resistance and crack resistance. Good, convenient construction, good economy and applicability.

A PCSS shear force coupled construction, comprising a steel structure (2) and an assembly-type prefabricated concrete bridge road plate. The prefabricated concrete bridge road plate comprises a concrete bridge road plate body (1) and a shear transferring structure (3) integrally cast with the concrete bridge road plate body (1) via a shear connector, and is fixedly mounted on the steel structure (2) via the shear transferring structure (3). Directly mounting the assembly-type prefabricated concrete bridge road plate on the steel structure (2) during the construction process facilitates the control of the construction process, significantly reduces the construction cycle, and exposes the coupling part of a composite beam, thus facilitating daily monitoring and maintenance, requiring less time out of service during maintenance and repair, and ensuring normal use of a bridge.

The invention discloses an assembly type hollow slab bridge and a construction method thereof. The assembly type hollow slab bridge comprises hollow slabs which are transversely and continuously arranged in sequence; two adjacent hollow slabs are connected together through joist steel; two opposite longitudinal side edges of two adjacent hollow slabs are clamped into notches in both sides of the joist steel respectively; the longitudinal side edges of the hollow slabs are straight edges; the longitudinal-extending side faces of the hollow slabs are straight faces. The construction method of the assembly type hollow slab bridge is a construction method for realizing the hollow slab bridge. By adopting the assembly type hollow slab bridge and the construction method thereof, the transverse integrity of the hollow slab bridge can be enhanced, and the shear transfer capacity among the hollow slabs is increased.