133results about How to "Reduced dynamic response" patented technology

A design method of an aeroelastic model for a long-span transmission tower-line system is disclosed. On the basis of boundary layer wind tunnel test data of a rigid model, a finite element model is utilized to calculate that relaxed Froude number similarity criterion of transmission towers, the influence of the elastic stiffness of a transmission line and two kinds of variable proportion transmission line models upon wind-induced response is changed, an aeroelastic model with long span is designed. The influence of material nonlinearity and gradient wind height of concrete filled steel tube onwind-induced response is further analyzed by the finite element model. The method has the advantages that the aeroelastic model of long span can be reasonably designed by increasing the elastic stiffness of the transmission line and adopting an accurate line length similarity ratio; consideration of the material nonlinearity of concrete-filled steel tubes has little effect on wind-induced response at design wind speed, and the wind-induced response decreases when considering the gradient wind height.

A method for activating at least one headlight of a vehicle has: a step of ascertaining a traffic density from an item of information about road users in the surroundings of the vehicle; a step of determining a control parameter for controlling an emission characteristic of the headlight using the ascertained traffic density; and a step of providing the control command for controlling an emission characteristic of the headlight using the control parameter.

The invention discloses an offshore wind power foundation structure consisting of a single pile, cylindrical foundations and an anchor cable. The offshore wind power foundation structure consists of a single pile, multiple cylindrical foundations and an anchor cable, wherein the cylindrical foundations are uniformly distributed on the circumference which takes the single pile as the center of a circle; the anchor cable is obliquely tensioned and is connected with the cylindrical foundations and the single pile; the anchor cable, the cylindrical foundations and the single pile are connected through welding; the included angle between the anchor cable and the single pile is between 30 and 60 degrees; and the top of the single pile is connected with a wind turbine tower through a flange plate. According to the technical scheme, a novel foundation type consisting of the single pile, the cylindrical foundations and the anchor cable is given, the anchor cable is connected with the cylindrical foundations and the single pile and is obliquely tensioned, the resistance of shallow soil on the earth surface is fully exerted, the bending moment resistance of the structure is enhanced, and the displacement of the pile body is reduced, so that the aim of reducing the diameter and thickness of the single pile is fulfilled.

The invention discloses a single pile and gravity combined offshore wind plant blower foundation. The foundation comprises a steel pipe pile vertically inserted to a seabed; the upper end of the steel pipe pile is connected with a transition section, and the upper end of the transition section is connected with a blower tower cylinder; the lower end of the steel pipe pile is anchored on the seabed by crossing through a gravity type foundation. The technical scheme of the single pile-gravity combined offshore wind plant blower foundation provides a novel foundation model formed by combining a single pile and the gravity; through adding an additional hollow gravity type foundation at the position of the steel pipe pile closing to the seabed, the rigidity of the single pile foundation closing to the seabed face is enhanced, advantages of two foundations are combined, and the using scale of a single-pile foundation is enlarged. The scheme increases the ability of resisting bending torque of the single-pile foundation, reduces the displacement of the pile body, and decreases the diameter and the thickness of the steel pipe pile.

The invention relates to the field of large-span stadium awning structures, in particular to a carbon fiber cable reinforced spoke type cable truss structure. The spoke type cable truss structure comprises a radial cable truss, an inner pull ring and an outer pressing ring, wherein the inner pull ring and the outer pressing ring are arranged at the two ends of the radial cable truss. The radial cable truss is composed of an upper radial cable, a lower radial cable and cable truss supporting rods, the inner pull ring is composed of an upper ring cable, a lower ring cable, a ring cable supporting rod and an inner ring cross cable, and the inner ring cross cable is a carbon fiber cable. According to the carbon fiber cable reinforced spoke type cable truss structure, the carbon fiber cross cable is additionally arranged in an inner ring cable plane of the spoke type cable truss structure; after the improvement, the vertical rigidity of the spoke type cable truss structure is greatly enhanced, and the response is obviously reduced under the action of wind loads and the like. The carbon fiber cable is small in section and rigidity, the influence on the inner pull ring cable force is small, the cable clamp unbalanced force can be remarkably reduced, the cable clamp structure is simplified, and therefore the problem that the cable clamp bearing capacity is insufficient is solved without additionally arranging balance cables.

The invention discloses a structural stability enhancing floating wind turbine foundation. The structural stability enhancing floating wind turbine foundation comprises a floating plate, a middle column, steel supports, tree shock absorbing buoys and a damping pendulum, wherein the central column is arranged in the center of a triangular structure formed by the three shock absorbing buoys, the above of the central column is provided with the floating plate, and the top of the floating plate is provided with a wind turbine; every shock absorbing buoy is composed of, sequentially from top to bottom, an equipment cabin, a ballast tank and a heaving plate, the equipment cabin serves as the mechanical storage chambers of power generation of the wind turbine, the ballast tank enables the buoyantcenter of the overall structure to be higher than the center of gravity through ballast, and the heaving plate is used for greatly reducing structural heaving response; steel supports are connected between every two shock absorbing buoys as well as between every shock absorbing buoy and the central column; the lower ends of the three shock absorbing buoys are all connected to the damping pendulum. The structural stability enhancing floating wind turbine foundation is connected to the seafloor through a tension type mooring system, and the tension type mooring system is composed of a lower anchoring end and an upper mooring cable. The structural stability enhancing floating wind turbine foundation can resist complex marine cyclic dynamic load to maintain long-term stability of an upper wind turbine tower.

The invention relates to a rock-socketed single pile foundation through offshore wind power and a construction method of the rock-socketed single pile foundation. The rock-socketed single pile foundation comprises a steel pipe single pile which is positioned in the center, wherein the lower end of the steel pipe single pile is inserted into a seabed, and the upper end of the steel pipe single pile is positioned above the sea level; a fan tower cylinder is mounted at the upper end of the steel pipe single pile, and a plurality of steel pipe grouting piles which are fixedly connected to the steel pipe single pile are arranged at intervals at the internal circumambient part or the periphery in the steel pipe single pile; the lower ends of the steel pipe grouting piles are inserted into the seabed, and the upper ends of the steel pipe grouting piles are positioned above the sea level; the inner parts of the lower ends of the steel pipe grouting piles are grouted with concrete socketed piles of which the lower ends penetrate through the lower ends of the steel pipe grouting piles to be embedded and fixed in a baserock layer of the seabed. According to the rock-socketed single pile foundation disclosed by the invention, the difficult problem that at current, in China, full cut-off sock-socketed construction of large diameter pile foundation cannot be realized is effectively solved, and besides, the horizontal load bearing capacity and the antidumping capacity of the pile foundation are improved; the dynamic response of infrastructures is reduced, the application scope of the single pile foundation is enlarged, and the single pile foundation disclosed by the invention has a high application value.

A control device for a hybrid drive, in particular for a hybrid drive of a motor vehicle having at least one combustion engine and at least one electric motor as driving motors, whose torques are coupled together to form a total torque. A controller is provided which generates an actuating signal for controlling the speed of each of the driving motors, a first actuating signal acting on the electric motor having a higher dynamic response than a second actuating signal acting on the combustion engine.

The invention discloses an intelligent dragline and a wind power generation hightower adopting the intelligent dragline. The intelligent dragline comprises a top anchor ring, a middle anchor ring, a pulley, SMA (Surface Mounted Assembly) tendons and a prestress cable, wherein one end of the prestress cable is connected with the top anchor ring, and the other end of the prestress cable is fixed atthe bottom of a device for installing the intelligent dragline; the middle anchor ring and the pulley which are installed in sequence at intervals penetrate through the middle of the prestress cable;and the SMA tendons penetrate through the prestress cable between the top anchor ring and the middle anchor ring as well as between the middle anchor ring and the pulley. When the intelligent dragline is installed in a wind power generation tower, the top anchor ring of the intelligent dragline is fixed at the top of the tower, the pulley is fixed on the wall of the tower, one end of the prestress cable is connected with the top anchor ring, and the other end of the prestress cable is fixed in a foundation. The intelligent dragline can reduce and control vibration in the horizontal direction,and can overcome the defects that the existing wind power generation hightower system has poor vibration-proof performance, and is easy to be damaged by natural factors such as strong wind, strong wave and the like.

The invention relates to a variable-rigidity hydraulic three-dimensional shock isolation device and method. The variable-rigidity hydraulic three-dimensional shock isolation device comprises an upper vertical shock isolation system, a lower overlapped rubber support, a pressure reducing cylinder, a pressure increasing cylinder and a connecting component. The vertical shock isolation system comprises a vertical shock isolator upper connecting plate, a vertical guide rail, a main cylinder piston rod, a main cylinder limiting and guiding sleeve, a main cylinder bottom piston series-connection pressure spring, a main cylinder bottom piston series-connection tension spring, a vertical shock isolator lower connecting plate and a main cylinder top sealing plate. The overlapped rubber support comprises an upper connecting plate, a steel plate layer, a rubber layer and an overlapped rubber support lower connecting plate. The pressure reducing cylinder comprises a pressure reducing cylinder piston series-connection pressure spring, a pressure reducing cylinder buffering mat layer, a pressure reducing cylinder guiding sleeve, a pressure reducing cylinder piston rod, a pressure reducing cylinder supporting ring and a pressure reducing cylinder top sealing plate. The pressure increasing cylinder comprises a pressure increasing cylinder piston series-connection pressure spring, a pressure increasing cylinder buffer mat layer, a pressure increasing cylinder guiding sleeve, a pressure increasing cylinder piston rod, a pressure increasing cylinder supporting ring and a pressure increasing cylinder top sealing plate. Vertical variable-rigidity control is achieved while vertical bearing force is guaranteed, and limiting and pull-resisting measures are adopted.

The invention discloses an intelligent vibration damping device based on an SMA variable-rigidity spring and a working process. The device comprises a vibration monitoring part, a working chamber temperature control part and a vibration damper main body part. The vibration monitoring part is composed of an oscilloscope, a cable and a sensor probe, the working chamber temperature control part is composed of a temperature display, a temperature regulator, a wire, a temperature sensor, a miniature refrigerator and a heater, and the vibration damper main body part is composed of an aluminum spring, a center moving shaft, a rubber gasket, a high damping tension sleeve, an NiTi-SMA spring, a movable sliding block, a hinged short bar and a metal shell. According to the intelligent vibration damping device based on the SMA variable-rigidity spring and the working process, a rigidity change rule presented by the NiTi-SMA spring which has the temperature sensitive characteristic under different temperatures is utilized, and the functions of intelligent vibration damping and vibration avoiding of a novel vibration damper are achieved; the intelligent vibration damping device has the advantages that the device is intelligent and controllable, the effect is obvious, the structure is simple, and machining is convenient; and the device is suitable for vibration damping systems of various large, medium and small scales industries and equipment for civil use.

The invention discloses a pulling-resistant frictional oscillating support for seismic reduction and isolation and relates to the seismic reduction technique of bridges. The pulling-resistant frictional oscillating support for seismic reduction and isolation comprises an upper support plate, an upper sliding plate, a middle sliding plate, a lower sliding plate, a lower support plate, upper L-shaped baffles and lower [-shaped baffles. The upper end of each upper L-shaped baffle is fixed at the outer edge of the upper support plate, the lower end of each lower [-shaped baffle is fixed at the outer edge of the lower support plate, the lower end of each upper L-shaped baffle is sleeved into the corresponding lower [-shaped baffle so that a pulling-resistant function is achieved, the upper L-shaped baffles and the lower [-shaped baffles can move freely along the movement direction of the support, and rubber buffer materials are filled between each upper L-shaped baffle and the corresponding lower [-shaped baffle. The pulling-resistant frictional oscillating support for seismic reduction and isolation has the advantages that the upper support plate, the upper sliding plate, the middle sliding plate, the lower sliding plate and the lower support plate form four sliding friction pairs which have sliding radiuses and friction factors respectively so that the support has high sliding displacement capability; and the upper L-shaped baffles are mutually engaged with the corresponding lower [-shaped baffles, and the rubber buffer materials are filled between each upper L-shaped baffle and the corresponding lower [-shaped baffle, so that the support has a pulling-resistant function.

The invention provides a double-tuned liquid column damper, and belongs to the technical field of damping and vibration isolation of structural works. The double-tuned liquid column damper comprises horizontal sliding devices (1), a lower-layer horizontal spring (2), a U-shaped water tank (3), a water tank damping hole (4) and liquid (5) inside the U-shaped water tank (3). The U-shaped water tank (3) oscillates back and forth in the main vibration direction of a structure and is hung or supported at the maximum structural vibration displacement position of the building through the horizontal sliding devices (1), and returns through the lower-layer horizontal spring (2) connecting the U-shaped water tank (3) and the building structure. The water tank damping hole (4) is formed in the bottom of the U-shaped water tank (3), and the liquid (5) inside the U-shaped water tank (3) generates damping through the water tank damping hole (4) to consume vibration energy of the structure. The double-tuned liquid column damper can be used for both vibration control over a newly built building structure and reinforcing maintenance of existing works, and can produce high economic benefit and social benefit.

The invention relates to the technical field of local anti-shock of ships, in particular to a ship anti-shock platform, which includes a front bulkhead and a rear bulkhead, multiple sets of elastic sliding devices are arranged between the front bulkhead and the rear bulkhead, and two adjacent An energy-absorbing buffer device is arranged between the groups of elastic sliding devices. The present invention adopts such a structural arrangement, by providing multiple sets of elastic sliding devices between the front bulkhead and the rear bulkhead, and an energy-absorbing buffer device is provided between two adjacent sets of elastic sliding devices, under the impact force, Through the organic combination of the elastic sliding device and the energy-absorbing buffer device, the impact energy is converted into the internal energy of the energy-absorbing buffer device and the elastic potential energy of the elastic sliding device, thereby reducing the dynamic response of the impact force to the hull and effectively achieving the effect of protecting the hull. The structure is simple and the effect is remarkable.

The invention discloses a high-bearing-capacity tensile energy-consuming seismic isolation device with multiple adjustable sliding surfaces, and belongs to the technical field of constructional engineering structure seismic isolation. The seismic isolation device comprises an upper connecting plate, an upper flange plate, a plurality of U-shaped supports, a curved surface sliding block, a curved surface sliding groove, an upper sliding surface, a lower sliding surface, a lower flange plate and a lower connecting plate. The vertical distance between a top sliding surface of the curved surface sliding block and the upper sliding surface is equivalent to the vertical relative displacement of upper limbs and lower limbs of the multiple U-shaped supports of the same specification, and is also equivalent to the vertical relative displacement between the upper flange plate and the lower flange plate. The radius of curvature of the top sliding surface of the curved surface sliding block is the same as the radius of curvature of the upper sliding surface, and the radius of curvature of a bottom sliding surface of the curved surface sliding block is the same as the radius of curvature of an inner sliding surface of the curved surface sliding groove. The multiple U-shaped supports of the same specification are arranged. The seismic isolation device is high in bearing capacity, good in horizontal seismic isolation, high in tensile energy-consuming characteristic, economical and practical, and environmentally friendly.

The invention discloses a control method for increasing the driving range of a hydrogen fuel cell vehicle. According to the method, the auxiliary energy super capacitor SOC of the hydrogen fuel cell vehicle is divided into a charging-only interval, a charging-discharging interval and a discharging-only interval; when the auxiliary energy super capacitor SOC is in the charging and discharging interval, a vehicle control unit calculates the real-time power P required by the vehicle through an accelerator pedal, a brake pedal, a gear switch, the vehicle speed and the motor rotating speed; according to the real-time power P, output power is selected by a fuel cell system of the hydrogen fuel cell vehicle; for the power demand of rapid conversion in the whole vehicle driving process, the auxiliary energy super capacitor bears the energy of a rapid conversion part, and the fuel cell system bears the energy of a slow change part. The energy utilization efficiency is improved, the driving range of the hydrogen fuel cell vehicle is increased, the power adjustment frequency of the hydrogen fuel cell system is reduced, and the service life of the hydrogen fuel cell system is prolonged.

The invention discloses a full-prefabricated assembly type concrete freight transport suspension type monorail structure. The structure comprises multiple prefabricated concrete track beams, the two ends of each prefabricated concrete track beam are connected with prefabricated concrete crossbeams, prefabricated hollow concrete piers are arranged at the two ends of each prefabricated concrete crossbeam, the bottoms of the two prefabricated hollow concrete piers corresponding to each prefabricated concrete crossbeam are installed on a prefabricated raft foundation, and each prefabricated raft foundation is fixed to the ground, wherein the length of each prefabricated concrete track beam is smaller than or equal to 10 m. Each component is a prefabricated member, quick assembly type construction is facilitated, the construction schedule is quickened, and construction cost is greatly saved; each component is prefabricated through reinforced concrete, the quality is reliable, the construction speed is high, maintenance cost in the later stage is low, construction cost is low, the structure is more environment-friendly, and traveling safety is facilitated; and the prefabricated raft foundations are adopted, the construction speed can be increased, soil texture exploration conducted in the earlier stage is not needed, and the earlier stage engineering cost is reduced.

The invention relates to a roadbed for controlling differential settlement of a road-bridge transition section of a high-speed railway. The roadbed comprises a roadbed body and a transition roadbed arranged between the roadbed body and a bridge abutment, a roadbed surface layer is paved above the transition roadbed; foundation reinforcing piles which are arranged in the transverse direction and the longitudinal direction and extend into an underground soil layer are arranged below the transition roadbed . The lengths of the foundation reinforcing piles are sequentially reduced from the centerline of the roadbed to two sides; the transition roadbed comprises a first foam concrete body and second foam concrete bodies laid on the top face and the bottom face of the first foam concrete body respectively. A layer of trapezoidal reinforced concrete body is also arranged between the top surface of the first foam concrete body and the second foam concrete body; the first foam concrete body and the trapezoidal reinforced concrete body are matched with each other to form a contact transition surface with a stepped structure with the roadbed body. Compared with the prior art, the roadbed hasthe advantages that differential settlement of a road and bridge transition section is controlled, construction is convenient, and the like.

The invention discloses an offshore wind power foundation consisting of a single pile and cylindrical foundations. The cylindrical foundations are uniformly distributed on the circumference which takes the single pile as the center of a circle; the single pile is a steel pipe pile; the cylindrical foundations and the cylindrical foundations and the single pile are connected through connecting steel pipes through welding; and the top of the single pile is connected with a wind turbine tower through a flange plate. According to the technical scheme, a novel foundation type consisting of the single pile and the cylindrical foundations through the connecting steel pipe is given, the resistance of shallow soil on the earth surface is fully exerted through the cylindrical foundations and the connecting steel pipe, the bending moment resistance of the single pile structure is enhanced, and the displacement of the pile body is reduced, so that the aim of reducing the diameter and thickness of the single pile is fulfilled.

The invention discloses a wedge-shaped debris flow-dividing blocking device and a construction method thereof. The device comprises a circular-arc-shaped blocking wall and two wing-shaped blocking walls. The circular-arc-shaped blocking wall is located at the foremost end of the whole device, and the wing-shaped blocking walls are fixed to the two sides symmetrically. Unbonded prestress systems are arranged in the circular-arc-shaped blocking wall and the wing-shaped blocking walls correspondingly. Each unbonded prestress system comprises a plurality of vertical unbonded prestress stranded steel wire devices which are composed of stranded steel wires, anchorage devices and corrugated pipes. Foundation slabs are arranged at the bottoms of the circular-arc-shaped blocking wall and the wing-shaped blocking walls correspondingly, and uplift pile foundations are additionally arranged under the foundation slabs provided with the unbonded prestress systems correspondingly. According to the device and method thereof, the unbonded prestress systems are arranged in the large stress areas, a good energy consumption effect is achieved, and dynamic response of the whole device is reduced. Whenthe device is impacted by debris, the flowing direction of the debris can be changed while the stability of the device is guaranteed, the impact energy is dissipated, and the safety of significant buildings or structures behind the device is guaranteed.

The invention discloses a built-in compartment type particle inertial-capacitance damper. The built-in compartment type particle inertial-capacitance damper is characterized in that one end of a ballscrew is inserted into a first metal shell through a nut, and the other end of the ball screw is inserted into a second metal shell through a bearing and welded to a flywheel; a plurality of compartments are arranged in the flywheel, the areas of the compartments are the same or different, a certain number of particles are placed in the compartments, the particle filling rates are the same or different, and thus the multi-frequency tuning function is achieved; and energy dissipation layers are attached to the inner walls of the compartments. When a controlled component vibrates to enable the first metal shell and the second metal shell to move relatively, the ball screw can drive the flywheel to rotate to generate inertial force, and vibration energy is absorbed; and the particles in the compartments of the flywheel move along with the flywheel and collide and rub with other particles and the energy dissipation layers to consume energy of the particles, and thus the purpose of energy dissipation is achieved. The built-in compartment type particle inertial-capacitance damper has the multiple functions of inertial-capacitance energy absorption, friction energy dissipation, multi-frequency tuning and the like, and vibration between structures under the effects of wind loads, earthquakes, blasting impact and the like can be effectively reduced.

The invention relates to a novel space grid structure ball joint device with a damping function. The novel space grid structure ball joint device comprises a joint ball and rod pieces connected with the joint ball and further comprises a damper located in the joint ball. The damper comprises an oil cylinder, an oil cylinder top cover, soft steel connected with the oil cylinder top cover, a piston and a piston rod. The other end of the soft steel is connected with the piston. One end of the piston rod is connected with the piston, and the other end of the piston rod is connected with one of the rod pieces. The soft steel and the piston are placed in the oil cylinder. The lower end of the oil cylinder is connected with a mounting hole in the joint ball. According to the characteristic that the interior of a hollow steel ball joint used in a space grid structure is provided with available space, the problem of under damping of the space grid structure is solved, and construction and mounting is easy and convenient. The effect of earthquakes is reduced by adding damping energy dissipation of the space structure, and accordingly anti-seismic capacity of the space structure is improved.