54results about How to "Increased shear stiffness" patented technology

The invention discloses an H-shaped steel beam and H-shaped steel column minor axis variable beam height fabricated node and a construction method thereof. The node comprises an H-shaped steel column, an H-shaped steel beam, a column sealing piece, a T-shaped connection piece, an L-shaped connection piece and bolts. The column sealing piece consists of a column sealing plate, a beam upper flange stiffening rib and a column sealing plate stiffening rib; the T-shaped connection piece consists of an upper flange plate connection plate which is arranged horizontally and a web connection plate which is perpendicular to the bottom surface of the upper flange plate connection plate; the L-shaped connection piece consists of a lower flange plate connection plate which is arranged horizontally and a column connection plate which is perpendicular to the lower flange plate connection plate downward. All accessories required by the node are prefabricated in a factory, the requirement of equal-strength connection in the process of changing the section of the H-shaped steel beam in a certain range can be met, high-strength bolts are adopted by a construction field node so as to realize the fabricated connection, and the node is high in rigidity and high in connection speed, and can meet the requirement of the fabricated construction of a steel structure.

The invention relates to a seismic-resistant electrical cable comprising a conductor, a semiconductive layer, a conductor shielding layer, an insulating layer, an insulating shielding layer, a copper strip shielding layer, an elastic body packing, a wrapping layer, an isolating sleeve, a thin round steel wire armoring layer, a thick round steel wire armoring layer, a copper conductor, an isolated layer and an outer sheath. The seismic-resistant electrical cable is characterized in that a semiconductive band layer is wrapped outside the conductor; insulating materials, packing materials, isolating sleeve materials and outer sheath materials are all elastic body polymers; and double-layer steel wire armoring is adopted for the armoring layers. The invention has higher shearing rigidity, bending rigidity and damping ratio, obvious effects of shear resistance, bending moment, axial force, torsion, and the like, and excellent seismic-resistant and seismic-proof capacity.

A tire, the tread of which has an underlayer and a circumferential reinforcement made up of a rubber mixture with a stiffness greater than the stiffness of the rubber mixture and the underlayer, has an outer side and an inner side. The circumferential reinforcement has a reinforcing element of tapered shape positioned in the tread pattern elements disposed axially on the outside with respect to the first or the second circumferential grooves of the tread from the outside to the inside and axially close to the circumferential groove.

The invention discloses a foam interlayer structure compound material and a preparation method thereof. A foam core material in the compound material is arranged between an upper skin and a lower skin, wherein one ends of one group of pultrusion rods in the foam core material are connected with the upper skin, the other ends of the group of pultrusion rods are connected with the lower skin to form a *-shaped structure, and pultrusion rods for connecting the upper skin and the lower skin are arranged between every two adjacent *-shaped structures. In the interlayer structure compound material, a plurality of pins are arranged in a foam matrix to form a space grid structure, thus the bonding force between the skins and the core material is improved, and because of geometrical features of the grid structure, the performances such as shearing resisting rigidity can be greatly improved. The foam interlayer structure compound material can be applied to aircraft members with high rigidity and weight requirements, such as wallboards, wing surfaces, tail beams and other main load-carrying structures.

The invention relates to the field of bridge construction, and discloses a combined beam. The combined beam comprises a concrete plate, wherein transverse steel bars are arranged in the concrete plateat intervals. The combined beam further comprises an inverted T-shaped steel beam, the inverted T-shaped steel beam comprises a web plate and further comprises a wing plate, wherein a connecting partis arranged on one side of the web plate, the connecting part is arranged in the concrete plate, the web plate is connected with the transverse steel bars through the connecting part, and the wing plate is connected with the web plate in a perpendicular mode. The invention further discloses a manufacturing method of the combined beam. The mode that the connecting part is connected with the transverse steel bars in the concrete plate is adopted in the combined beam and is compared with the mode that shearing force nails are adopted to achieve the connection between a steel plate and a concreteplate, the advantages of being high in shear stiffness, high in bearing capacity, good in ductility and the like; and in addition, the combined beam is simple in structure, convenient and fast to construct, high in cracking strength and good in durability. According to the combined beam and the manufacturing method thereof, the defects that when the mode that the shearing force nails are adoptedto achieve the connection between the steel plate and the concrete plate is adopted, the shear resistance and the bearing capacity of a connecting piece are low, the shear stiffness is low, and the ductility is poor are overcome, and the problems that the concrete plate is prone to cracking, and the durability is poor are solved.

The invention discloses a backfilling U-shaped shed and belongs to the field of underground supporting. The backfilling U-shaped shed comprises a U-shaped shed, wherein a grouting hole is reserved at the shed leg position of the U-shaped shed, a grouting pipe is welded outside the grouting hole, and the internal diameter of the grouting pipe is identical to the diameter of the grouting hole. A cavity behind a wall is subjected to grouting filling through the reserved grouting pipe, line contact of the U-shaped shed and the surface of roadway surrounding rock is converted to surface contact, and accordingly the supporting area is enlarged for more than five times. The U-shaped shed can be stressed timely and uniformly, the supporting performance is increased by more than three times, and point damage of the U-shaped shed caused by somewhere non-uniform force bearing is avoided. The structural section of the U-shaped shed is enlarged, and the bending resistance and shearing rigidity of the U-shaped shed are obviously improved. The U-shaped shed integral supporting performance is maximized, and long-term stability of broken soft-rock roadways is ensured.

The invention relates to a yarn traversing device for the winding mechanism of a textile machine for the production of cross-wound bobbins, the device having a yarn guide which is displaceable parallel to the surface of the winding bobbin and capable of Works by means of a reciprocating motorized single drive controllable in a defined manner. According to the invention, the yarn feeder (13) is arranged to be connected to an electric single drive (14) by means of a limited, flexible connecting means (20), which is configured to transmit tensile and compressive forces.

The invention provides a pneumatic radial tire for a heavy load capable of optimizing a providing position of a rewinding end of a carcass ply or a wire chafer end, preventing a crack from beginning at the end part, and improving durability in the part and in the whole tire by suppressing collapse of a side wall part and a bead part.

A tire (1) comprises two beads (4), two sidewalls (3) connected to the beads and a crown (2) connected to the ends of the two sidewalls, the crown comprising a crown reinforcement (6) and a tread (5) radially outside the crown reinforcement (6), said tread (7) comprising a plurality of tread pattern blocks (71), at least two radially superposed layers: a sublayer (7S) covering the crown reinforcement (6), and a main layer (7P) radially above the crown reinforcement (6), the sublayer comprising a plurality of circumferential reinforcing elements (73) being formed of a rubber compound having greater stiffness than the stiffness of the rubber compound of the rest of the sublayer, the circumferential reinforcing elements (73) extending radially from the radially exterior surface of said crown reinforcement (6) in the direction of the interface between the sublayer (7S) and the main layer (7P), said circumferential reinforcing elements having an axial width which decreases gradually with increasing radial proximity to the outside.

The invention belongs to the field of building engineering, and particularly relates to a cold-formed steel composite wall sandwiched with anti-buckling supports, and wall surface plate material layers and cold-formed steel are used as constraining parts for the anti-buckling supports. The cold-formed steel composite wall includes upper and lower guide rails transversely arranged and vertically-and-oppositely-arranged keel columns, and the anti-buckling supports and outer cover wall panels are sandwiched between the vertically-and-oppositely-arranged keel columns. Steel strips are used as corematerials in the sandwiched supports, a wrap-around cross-section body composed of wall surface plate materials such as OSB plates and the cold-formed steel is used as a constraining member, and thewrap-around cross-section body in the constraining member are connected with the outer cover wall panels correspondingly by self-tapping screws. According to the cold-formed steel composite wall sandwiched with the anti-buckling supports, the side resistant ability of the cold-formed steel composite wall can be improved, the steel strips can be brought into full play under compression and tension,and the seismic resistance of the wall can be improved. The cold-formed steel composite wall includes the anti-buckling supports, wherein the anti-buckling supports are fabricated, no wet work exists, construction is simple, less labor is applied, and the requirements of green buildings and fabricated buildings are met.

The patent refers to the field of 'walls'. The invention relates to a bifuntional combined steel plate shear wall. A specially designed T-shaped fish-belly plate shear resisting system enhances the shear resisting stiffness in small earthquakes or in middle earthquakes, realizes stable transmission force, and augments the stiffness of the simply used steel shear wall; in large earthquakes, the shear resisting system quits operation, and partially provides the shear resisting stiffness; a plug-in concrete slab does not involve to share the horizontal effect, so as to lower the whole resist lateral stiffness; simultaneously the shear resisting system ensures the restraining effect of the concrete slab to the outer side of the steel plate, improves the energy consuming ability of the structure, augments the additional damping ratio of the structure, and decreases the damage effect of the structure in the earthquakes, thus achieving the effect of a fuse wire and a energy dissipater in large earthquakes. The bifuntional combined steel shear wall provided by the invention is a novel combined steel plate shear wall applied in high-rise building steel structures or other structures, has simple construction, convenient replacement, good economy, better vibration resistance and the like, and is a superior and practical side force resisting structural member.

The invention discloses a steel plate holder and skew spike combined interface connection steel and UHPC (ultrahigh performance concrete) thin slab combination structure system. According to the system, the ultra-thin deck slab is made from UHPC so that dead weight of the structure can be reduced while the bridge capacity of the structure can be improved; steel plate holder and skew spike combinedconnectors are used for interface connection at the interface, so that comprehensive advantages of the steel plates serving as the rigid connectors and the spikes serving as the flexible connectors can be achieved well, interface slippage can be reduced under action of rigid connection of the steel plate holders in the normal application state, and the defect in ductility of the steel plate holders which serve as the rigid connectors can be overcome according to characteristic of the spikes serving as the flexible connector in an ultimate state. The short skew spikes are in staggered arrangement to form the reinforcing truss web member of the UHPC slab, so that rigidity of the UHPC slab is increased and further the integral rigidity of the combined section is increased.

The invention discloses a little-odor and few-VOCs (volatile organic compounds) automotive paper honeycomb composite board, which comprises a paper honeycomb core layer, hot melt adhesive film layers, a non-woven fabric layer and a surface layer material, wherein the hot melt adhesive film layers are adhered to the upper surface and the lower surface of the paper honeycomb core layer; the non-woven fabric layer is adhered to the surface of a hot melt adhesive film; the surface layer material covers the non-woven fabric layer; the paper honeycomb core layer has a honeycomb-shaped structure consisting of hexagonal hole grids and triangular hole grids; a dentate adhering structure is formed between the surface layer material and the non-woven fabric layer; the hot melt adhesive film is prepared from the following raw materials of polyneopentylene-1,6-hexamethylene adipate glycol, a polyoxyethylene-polystyrene-polyoxyethylene triblock copolymer, polyethylene acrylate, pentaerythritol, neopentyl glycol, hexadecanoic acid, lauryl-L-glutamic acid-[alpha],[gamma]-dibutylamine, zinc ricinoleate, 2,5-dimethyl-2,5-di-(tert-butylperoxy)acetylene, a hydroxyketone photoinitiator and the like. The little-odor and few-VOCs automotive paper honeycomb composite board is little in odor; the VOCs are below a standard limit minimum.