6results about How to "Increased shear stiffness" patented technology

This utility model discloses a Z-shaped friction damping column structure with enhanced seismic performance, comprising a Z-shaped friction damping column body, which includes columns on both sides and Z-shaped crossbars between the columns. The top and bottom of the Z-shaped crossbars between the columns are respectively provided with top friction damping diagonal braces and bottom friction damping crossbars. When an earthquake generates a load on the rack in the direction perpendicular to the aisle, and the axial force caused on the base and the bottom and top diagonal braces exceeds the preset friction force, the damper will begin to slide, absorbing or dissipating some of the seismic energy in the form of friction damping. This reduces the probability of damage to rack structural components and goods slippage under seismic conditions, thereby enhancing the overall seismic performance of the industrial rack.

The utility model relates to the field of airplane body structures, and provides an empennage and fuselage connecting structure and an airplane, the connecting structure comprises a first empennage connecting rib, a second empennage connecting rib, a fuselage connecting rib, a fuselage connecting corner box and a reinforcing band plate; each group of first empennage connecting ribs and each group of second empennage connecting ribs enclose a closed curve for accommodating an empennage box section; the fuselage connecting rib is used for fixedly connecting the first and second empennage connecting ribs respectively; one end of the fuselage connecting rib is fixed on the fuselage connecting corner box; the reinforcing band plates are arranged on the upper portions and the lower portions of the first empennage connecting ribs and the second empennage connecting ribs and fixed to the fuselage connecting ribs. And the fuselage connecting corner box is fixedly connected to the fuselage tail frame. The connecting structure is of a box-shaped structure and has large course torsional rigidity; stress concentration at the joint is reduced based on an empennage skin dispersed load transfer mode; the fuselage connecting rib edge strips, the fuselage connecting corner boxes and the connecting band plates form a shear-resistant structure, and the lateral shear rigidity is large; the structure is simple and installation is convenient.

The utility model relates to the technical field of rail transit, and discloses a laterally-arranged shear plate and a laterally-arranged shear plate connecting structure, and the laterally-arranged shear plate comprises a main connecting plate, a rib plate group and a plurality of bolts. The main connecting plate comprises a first connecting plate and a second connecting plate, one end of the first connecting plate is fixedly connected with one end of the second connecting plate, an included angle is formed between the first connecting plate and the second connecting plate, one side of the main connecting plate faces the floating plate, and the other side of the main connecting plate deviates from the floating plate. The rib plate set is fixedly arranged on the side, away from the floating slab, of the main connecting plate and comprises first transverse rib plates, second transverse rib plates and vertical rib plates, and the first transverse rib plates and the second transverse rib plates are arranged in the height direction of the main connecting plate at intervals and extend in the length direction of the main connecting plate. The vertical rib plate is fixedly arranged at the joint of the first connecting plate and the second connecting plate and extends along the joint of the first connecting plate and the second connecting plate, and the first connecting plate and the second connecting plate are both fixedly connected with the vertical rib plate.

The application discloses a steel pipe concrete shearing connecting piece with a constraint structure, which comprises a steel pipe concrete component for connecting a steel structure and a reinforced concrete structure and a tensile constraint structure thereof, the steel pipe concrete component comprises a steel pipe welded at one end with the steel structure, a high-strength and high-performance concrete filling layer poured in the steel pipe, and a steel cap embedded in the reinforced concrete structure and fixedly connected with the other end of the steel pipe, the constraint structure comprises a high-strength and high-performance concrete ring arranged on the outer periphery of the steel pipe, a tensile unit arranged on the outer periphery of the high-strength and high-performance concrete ring, and spiral reinforcement arranged around the tensile unit and the outer side of the steel pipe. The application can greatly improve the shearing strength and rigidity of the shearing connecting piece, ensure that the welding position is not a shearing weak position of the steel-concrete composite structure, effectively inhibit the splitting of the reinforced concrete and development thereof, and make the bearing capacity of each structure fully play; the shearing connecting piece has excellent structural toughness and can coordinate the deformation difference between the steel-concrete composite structures.

The invention discloses a self-tapping anchor bolt wood-concrete composite beam anti-shear joint and a construction method thereof, and relates to the technical field of constructional engineering.The joint comprises a concrete plate, laminated wood, a perforated T-shaped steel plate and a self-tapping anchor bolt, the concrete plate and the laminated wood are each provided with a groove, and a flange and a web of the perforated T-shaped steel plate are embedded into the grooves correspondingly; the flanges are detachably connected with the concrete slab through self-tapping anchor bolts, and the web is bonded with the laminated wood through intrinsic flame-retardant structural adhesive; the web plate is provided with a hourglass-shaped reducing through structure hole and a spiral flow guide groove, and the glue solution is filled in the hole to form a mechanical interlocking structure. During construction, assembly is completed through the steps of groove treatment, steel plate connection, glue solution preparation and glue injection, curing and the like, full-assembly dry-type connection is achieved, the construction efficiency is improved, the problem that the glue injection quality of a traditional joint is difficult to control is solved, excellent shear resistance, pulling resistance and fireproof performance are achieved, reinforcement of a newly-built structure and an existing structure is adapted, and the application prospect is wide.

This invention relates to an anti-backflow composite plastic drainage board and its construction method. The drainage board includes a core board and a filter membrane. The core board includes a main core board and a secondary core board. The main core board is composed of wing plates and a web plate. Some wing plates are continuously thickened to form longitudinal reinforcing ribs, and the web plate is thickened to form transverse connecting ribs. The longitudinal reinforcing ribs and transverse connecting ribs intersect to form a reinforced structure, improving the bending and shear stiffness of the drainage board. The secondary core board is a protruding structure extending outward from the side of the main core board. When the steel sleeve is pulled up, it is embedded in the soil to form an anchor, preventing backflow. At the same time, the secondary core board also increases the permeable area. The bottom end of the main core board is provided with a conical protective sleeve and a clamping device to seal the end of the drainage channel and prevent mud sludge blockage. This invention solves the problems of insufficient stiffness, excessive backflow, and sludge blockage failure of drainage boards from the perspective of the drainage board structure. It enables the drainage board to have high stiffness, anti-backflow, and anti-sludge performance without the need for external accessories, and is suitable for various soft soil foundation treatment conditions.