15results about How to "Increase lateral stiffness" patented technology

This invention discloses a low-damage steel frame structure and a prefabrication and assembly method. The structure includes: a foundation, a first frame column, a second frame column, frame beams, floor slabs, beam end connectors, and column bottom connectors. The first frame column is installed on the foundation via column bottom connectors. The second frame column is positioned above the first frame column, with the number of second frame columns determined according to the number of structural floors. The connection points between the first and second frame columns, as well as the connection points between two adjacent second frame columns, are located at the inflection points of each floor. The frame beams are fixedly connected to the second frame columns on both sides via beam end connectors. The floor slab is positioned on the upper surface of the frame beams. This invention enables the beam-column joints and column bottom joints to achieve a bending-shear separation stress mechanism, extending the plastic hinge areas at the beam ends and column bottoms, thereby reducing damage to the beam-column joints and column bottom joints, minimizing residual deformation of the steel frame structure, and improving the seismic toughness of the structure. All structural components can be prefabricated in a factory and assembled on-site, facilitating construction.

The application discloses a wall connecting rod for a frame structure outer wall scaffold and a construction method thereof, which comprises a rod body fixed on a wall body by means of a mounting piece and a rotating mechanism, the mounting piece comprises a fixed plate, a bolt one and a pre-buried piece, the pre-buried piece is fixed on the inner wall of an assembly hole opened on the surface of the wall body, the bolt one is threadedly connected between the pre-buried piece and the inner wall of the assembly hole opened on the surface of the fixed plate after penetrating through the inner wall, and is used for fixing the fixed plate and the wall body, the rod body is a three-section structure, which comprises a rod body one, a rod body two and a sleeve ring, the rod body one and the sleeve ring are integrally formed, and the rod body two is welded and fixed with the fixed plate. The three-section rod body and the sleeve ring are inserted and matched, the bolt two and the nut are locked and limited, the wall connecting rod and the wall body are rigidly connected, the free length of the scaffold vertical rod is effectively shortened, the lateral rigidity of the scaffold body is enhanced, and the scaffold body is prevented from shaking, tilting or collapsing.

The invention relates to the technical field of steel structure engineering construction, in particular to a super-long independent steel column segmented locking type temporary stabilizing device and a construction method thereof, and is suitable for the overall lifting stage of a multi-layer aerial corridor. The device comprises a first locking assembly surrounding a concrete column and providing an X-direction lateral fulcrum; the second locking assembly is fixedly connected to the surface of the steel column to form a force transmission interface; and the connecting conversion assembly connects the steel column and the concrete column into a whole, so that the X-direction load of the steel column is transmitted to the concrete column in sections. The super-long steel columns are temporarily decomposed into short column stress sections with the length not larger than the designed length, and lateral displacement is remarkably restrained. The construction method comprises the steps that the device is installed at the corridor joint, pre-tightening force is synchronously applied, displacement is monitored in real time, overall dismantling is conducted after lifting is completed, and no residue exists after dismantling. The method is not pre-buried and fully recycled, super-long columns are restored to be in a short column stress state, lateral displacement is reduced, steel is saved, the construction period is shortened, green construction and appearance completeness are both considered, and the method is suitable for a large-span corridor overall lifting project.

This invention discloses a hollow slab bridge pavement structure and construction method, applicable to the design and construction of hollow slab bridge pavement layers. The structure is characterized by comprising three parts: bridge deck pavement, self-stressing ribs, and anchoring bars. Three self-stressing ribs are transversely arranged at L / 4, L / 2, and 3L / 4 within a span of the bridge pavement. Under the action of these three transverse self-stressing ribs, the rigid connection of the hinge joints between the hollow slabs in the bridge superstructure is strengthened, the transverse bending moment transmission of the hinge joints is increased, and the transverse stiffness of the bridge is improved, thereby extending the bridge's service life. Compared with transverse prestressing reinforcement of the bridge superstructure at the bottom of the bridge slab, self-stressing ribs have advantages such as uniform stress distribution, strong bonding with the hollow slabs, reasonable stress distribution, simple process, low cost, and environmental friendliness.

The invention is suitable for the field of structural walls, and provides a steel grid wall structure provided with an energy dissipation component, which comprises edge frame columns, edge frame beams, grid components, lug plates and low-elasticity high-damping components, the edge frame columns and the edge frame beams are connected to form a frame, the lug plates are arranged on the inner sides of the edge frame columns and the edge frame beams, and the low-elasticity high-damping components are arranged on the inner sides of the edge frame columns and the edge frame beams. And the low-elasticity high-damping component is used for connecting the grid component and is arranged on the grid component. During use, the low-elasticity high-damping component is arranged in the grid component, compared with a traditional steel grid wall structure system, the steel grid wall structure system has the advantages of being clear in damage mode, concentrated in energy consumption and efficient, and effective control over a structural plasticity development area can be achieved.

The present application relates to a kind of single tube tower body reinforcing device, for single tube tower body reinforcing, the single tube tower body reinforcing device includes: single tube tower cantilever beam node, cable, cable top fixed node, cable bottom fixed node;The cable is arranged in double hyperbolic paraboloid shape around single tube tower body;The upper end of the cable is fixed by cable top fixed node;The lower end of the cable is fixed by cable bottom fixed node;The single tube tower cantilever beam node is set on single tube tower body;The middle of the cable is fixed by single tube tower cantilever beam node.Compared with prior art, the single tube tower body reinforcing device of the present application has the advantages of lower reinforcing cost, smaller reinforcing floor area, simpler reinforcing method, stronger operability, obvious effect on the overall stiffness of single tube tower, good appearance, etc.

The invention relates to the technical field of articulated vehicle steering, aims to solve the problems that an existing hydraulic steering system is high in energy consumption, low in precision, slow in response, insufficient in transverse rigidity, prone to causing vehicle body oscillation and the like, and discloses drive-by-wire electromechanical steering equipment and method for an articulated mining vehicle. The required torque is calculated by the data processing terminal and then is transmitted to the inverter through the CAN bus so as to drive the servo motor; the servo motor drives the enveloping worm through the planetary reduction gear, so that the turbine set is driven, and steering of the rear vehicle body of the hinged type mining vehicle relative to the front vehicle body of the hinged type mining vehicle is achieved. The system has the advantages of energy conservation, high efficiency, accurate response, high stability, fault redundancy capability, simplified structure and low maintenance cost, and the steering performance and reliability of the articulated mining vehicle under severe working conditions are remarkably improved.

The utility model discloses an electromagnetic shielding wire duct of a building structure, which comprises a steel reinforced concrete duct body constructed on the building structure, a wire box arranged in the steel reinforced concrete duct body, a metal shielding net covering an opening of the wire box, and a grounding wire connected to the metal shielding net, a plurality of diagonal bracings which are horizontally supported at the opening of the wire box are arranged below the metal shielding net, and a wire duct cover plate is arranged above the metal shielding net. According to the utility model, electromagnetic signals can be shielded, electromagnetic interference can be avoided, the signal transmission quality of wires and cables in the trunking can be improved, the structural strength of the trunking can be improved, the structural deformation of the trunking can be reduced, the risk that the trunking is damaged can be reduced, and externally input current and voltage signals can be released; therefore, safety protection is carried out on electric wires and cables in the wire duct from a plurality of angles.

A pneumatic tire comprises: a tread portion; a pair of sidewall portions; a pair of bead portions each with a bead core embedded therein; a toroidal carcass extending between the bead portions; and a sidewall rubber disposed axially outside the carcass in each of the sidewall portions. The bead portion has a bead bottom surface which contacts with a bead seat of a wheel rim when the tire is mounted thereon. The bead bottom surface comprises an axially inner region including a bead toe and an axially outer region including a bead heel. The axially inner region is formed by a canvas chafer. The axially outer region is formed by the sidewall rubber extended radially inwardly from the sidewall portion.

This invention relates to a post-earthquake recoverable steel plate shear wall-timber frame hybrid structure and its construction method. The structure includes a steel plate shear wall, a glued laminated timber frame, timber floor slabs, a self-resetting shear damper, shear connectors, post-tensioned unbonded prestressing tendons, and anchorages. The self-resetting shear damper and shear connectors connect the steel plate shear wall and the timber floor slabs, while the post-tensioned unbonded prestressing tendons are used in the steel plate shear wall. Compared to existing technologies, this invention combines a steel plate shear wall with a glued laminated timber frame structure system. It leverages the lateral resistance of the steel plate shear wall to help the timber structure system address the seismic challenges of high-rise development, while the combination of timber and steel further enhances the environmental friendliness and sustainability of the building structure. Furthermore, the use of numerous prefabricated components, coupled with the ease of assembly and construction of the timber structure itself, significantly increases the overall construction speed.

The application provides an inner support basement foundation pit enclosure system, which is applied to the technical field of foundation pit enclosure and comprises a retaining structure, a temporary horizontal support structure and a permanent vertical support structure for supporting the retaining structure along the periphery of the foundation pit, the retaining structure is arranged along the inner wall of the foundation pit, the permanent vertical support structure comprises a plurality of groups of permanent lateral force resisting vertical members with a high length-width ratio continuous force section in at least a lateral direction, wherein the lower end of the member is anchored below the bottom plate of the basement, the member is constructed by using a top-down method and is reserved in a peripheral area on the inner side of the basement after construction is completed, a plurality of structural columns are also constructed in the peripheral area by using a bottom-up method, the plurality of structural columns and the plurality of groups of permanent lateral force resisting vertical members are distributed in the peripheral area in a staggered manner, and the foundation pit enclosure system has the advantages of less use of temporary members, convenient use of the main structure and the like.

The application provides a racing car suspension structure, which comprises a left stand, a right stand, a left suspension and a right suspension; a connecting assembly is installed at the center of a frame; the left suspension comprises a left upper transverse arm and a left lower transverse arm; the right suspension comprises a right upper transverse arm and a right lower transverse arm; one end of the left upper transverse arm and the left lower transverse arm is rotatably connected with the upper end and the lower end of the left stand respectively; one end of the right upper transverse arm and the right lower transverse arm is rotatably connected with the upper end of the right stand respectively; the other end of the left upper transverse arm and the right upper transverse arm is rotatably connected with the upper end of the connecting assembly respectively; the other end of the left lower transverse arm and the right lower transverse arm is rotatably connected with the lower end of the connecting assembly respectively; the left upper transverse arm and the right upper transverse arm are axially symmetrical relative to the connecting assembly; the left lower transverse arm and the right lower transverse arm are centrally symmetrical relative to the connecting assembly. The application can maximize the utilization of the lateral arrangement space of the vehicle by the length of all the transverse arms, change the wheel track and the positioning parameters of the wheels within the acceptable limited range, and improve the steering stability of the vehicle.

The utility model discloses an assembly type deployable truss which comprises foldable trusses, a first X-shaped inclined strut, a second X-shaped inclined strut and a transverse supporting connecting rod, the number of the foldable trusses is two, and the first X-shaped inclined strut is connected with the upper ends of the two foldable trusses; the upper end of the second X-shaped inclined strut is connected with the upper end of the foldable truss, and the lower end of the second X-shaped inclined strut is connected with the lower end of the foldable truss; the two ends of the transverse supporting connecting rods are connected with the foldable trusses located on the same side. The assembly design concept is followed, and standardized components and joints are elaborately designed. By reducing the types of the components and the nodes, batch production and standardized operation are realized, and the production efficiency is remarkably improved. According to the structure, bolts or screws are adopted for connection, accurate matching of the component size and the hole site is guaranteed, the technical threshold of assembly is lowered, ordinary constructors can also complete splicing work rapidly, and installation convenience is greatly enhanced.

The utility model provides a kind of full assembly low-level house structure system, belong to prefabricated building field, including through height concrete corner column, prefabricated concrete beam, prefabricated concrete stand and floor;Wherein, multiple through height concrete corner column is arranged at least in the room corner of house structure;Multiple prefabricated concrete beam is assembled and connected between through height concrete corner column;Multiple prefabricated concrete stand is set according to interlayer, and at least and prefabricated concrete beam hinged connection is formed swing column;Multiple floor is laid on prefabricated concrete beam.Prefabricated concrete beam is through, and prefabricated concrete stand is layered according to interlayer, and prefabricated concrete stand is formed swing column by hinged, and prefabricated concrete stand only bears axial force, does not bear bending moment, and size only needs to achieve 200mm*200mm, cannot protrude wall surface, compared with the section of 400*400 of conventional concrete column, section can be reduced, also convenient transportation and installation.