14 results about "Artificial wave" patented technology

The invention relates to a large-span bridge anti-seismic performance optimization and evaluation system based on digital twinning, and belongs to the field of computer and bridge engineering. The optimization and evaluation system comprises a data acquisition and pre-processing module, a model updating module and a performance evaluation and optimization module; the optimization and evaluation method comprises the following steps: identifying the modal and frequency of a structure, obtaining the modal shape and natural vibration frequency of a bridge, and establishing a digital twinborn model of an object bridge; and according to the multi-objective optimization design function, carrying out supercomputing driven damping device parameter optimization, outputting an optimal parameter combination, and controlling hierarchical response of the bridge in an earthquake. The artificial waves generated based on the design response spectrum of the bridge can fully consider the dynamic characteristics of the large-span cable-stayed bridge and the seismic oscillation characteristics of the design site; meanwhile, only time history analysis of single seismic oscillation is involved in the anti-seismic optimization design process, the calculation amount of optimization design is greatly reduced, the comprehensive influence of each nonlinear factor on the bridge seismic response is better considered, and the complexity of large-span bridge anti-seismic optimization is remarkably simplified.

The invention discloses a river valley area bridge earthquake vulnerability intelligent evaluation and earthquake resistance optimization analysis method, and relates to the technical field of bridge structure earthquake resistance analysis. The method comprises the following steps: constructing a geological model of an area where a bridge is located and a three-dimensional structure model of the bridge; a plurality of monitoring points are arranged in a bridge and a river valley area where the bridge is located, and collected data are uploaded to a cloud data center through a wireless transmission subsystem; carrying out seismic oscillation time history analysis based on the digital twinborn body, and visualizing the weak part of the structure through a cloud picture by adopting an artificial wave and actual measurement wave mixed input mode; and generating a multi-objective optimization scheme according to the vulnerability curve. According to the method, seismic oscillation time history analysis is carried out based on the digital twin, an artificial wave and actually measured wave mixed input mode is adopted, a weak part of a structure is visualized through a cloud picture, a multi-target optimization scheme is generated according to monitoring data, the seismic monitoring efficiency and supervision strength of a bridge in a river valley area are improved, and a bridge reinforcement method is rapidly provided.

The invention discloses a rapid earthquake vulnerability analysis method for a deepwater bridge, which can rapidly generate artificial waves meeting the requirements of a standard response spectrum, can shorten the time for producing the artificial waves in a traditional earthquake-proof time history construction method to about 10 minutes, and greatly improves the construction efficiency of earthquake-proof time history waves. Meanwhile, the dynamic water additional mass of the deepwater bridge is determined by using a particle swarm optimization algorithm; and determining the optimal dynamic water additional mass of the deepwater bridge by checking the seismic response of the beam-column unit model corresponding to the bridge local pier entity finite element model under the dynamic water additional mass and the seismic response error of the fluid-structure interaction pier entity finite element model established on the local pier entity finite element model. Compared with a traditional numerical type deepwater bridge flowing water additional mass determination method, the method is small in calculation amount and high in calculation efficiency, and a foundation is laid for accurate earthquake vulnerability analysis of the deepwater bridge.

This invention relates to a seismic performance optimization and evaluation system for long-span bridges based on digital twins, belonging to the fields of computer science and bridge engineering. The optimization and evaluation system includes a data acquisition and preprocessing module, a model update module, and a performance evaluation and optimization module. The optimization and evaluation method includes identifying the structural modes and frequencies to obtain the bridge's mode shapes and natural frequencies, and establishing a digital twin model of the target bridge. Based on a multi-objective optimization design function, supercomputing-driven optimization of vibration reduction device parameters is performed, outputting the optimal parameter combination to control the bridge's graded response under earthquakes. The artificial wave generated based on the bridge's design response spectrum can fully consider the dynamic characteristics of long-span cable-stayed bridges and the seismic motion characteristics of the design site. Simultaneously, the seismic optimization design process only involves the time history analysis of a single ground motion, significantly reducing the computational load of the optimization design and better considering the comprehensive influence of various nonlinear factors on the bridge's seismic response, thus significantly simplifying the complexity of seismic optimization for long-span bridges.

The invention provides an artificial wave device for a wind wave flow wind tunnel test. The artificial wave device comprises a shell, a wave making mechanism, an elastic pavement layer and a matched controller. According to the artificial wave device for the wind wave flow wind tunnel test, the shell is arranged, the wave making mechanism is arranged in the experiment cavity in the shell, and the multiple telescopic parts, evenly distributed in the experiment cavity and capable of extending upwards in the vertical direction, of the wave making mechanism are connected with the elastic pavement layer, so that the elastic pavement layer moves along with the telescopic parts; the matched controller can control all the telescopic parts to drive the elastic pavement layer to move in the vertical direction, so that the elastic pavement layer is in the shape of sea waves.

The present invention provides a method for controlling a self-mixing floating microalgae reactor, comprising a wave-making unit connected to and driven by a driving unit, which can periodically reciprocate in a containing space of a reactor housing (12) and form horizontal surges in a culture solution; an acceleration sensor installed in the reactor housing (12) and used to monitor the reactor motion response in real time; and a control unit that controls the driving unit according to a signal from the acceleration sensor; first detecting whether the marine environment generates sufficient sway acceleration in response to the self-mixing floating microalgae; and when the sway acceleration is insufficient, starting the driving unit and performing artificial wave making. The present invention has a simple structure and effectively solves the problem of insufficient mixing caused by unstable wave energy.

The utility model discloses a wave pushing device, which relates to the field of artificial wave making technology and comprises a bottom plate, a wave making plate is rotatably arranged on the bottom plate, a driving part for pushing the wave making plate to swing back and forth is mounted between one side of the wave making plate and the bottom plate, and a wave suppression plate is rotatably arranged on the other side of the wave making plate. The rotating axis of the wave suppression plate is parallel to the rotating axis of the wave making plate, the rotating axis of the wave suppression plate is located on the side, away from the rotating axis of the wave making plate, of the wave making plate, a wave containing cavity is formed between the wave suppression plate and the wave making plate, and the side, away from the rotating axis of the wave suppression plate, of the wave suppression plate is provided with a warped edge facilitating water to enter the wave containing cavity. And a reset elastic piece for resetting the wave suppression plate is arranged between the wave suppression plate and the wave making plate. According to the invention, the wave amplitude can be increased, and the wave making efficiency is improved.

This invention provides an experimental apparatus and method for simulating artificial surge scouring of bottom sediment. By setting up an upstream water tank and a rapidly opening and closing valve, the instantaneous release of water stored in the upstream tank through the valve's opening allows for precise simulation of the instantaneous surge process caused by gate scheduling or flooding in actual river channels. By setting an adjustable tailgate to control the downstream water level, combined with an adjustable upstream water tank level, independent or coupled adjustment of key hydraulic parameters such as surge intensity (water level difference) and downstream water depth is achieved, providing a hardware foundation for systematically studying the bottom sediment response mechanism under different working conditions. Simultaneously, an integrated flow velocity measurement system and image acquisition system enable real-time synchronous acquisition of the dynamic evolution of the transient flow field structure and bed micro-topography under surge action, achieving synchronous high-precision monitoring of the dynamic evolution of the transient flow field structure and bed micro-topography.

This application discloses a wave generator, relating to the field of artificial wave generation technology. The wave generator includes a wave chamber, a piston chamber, a piston component, a baffle, and a drive assembly. The piston chamber is connected to the wave chamber through multiple slots spaced apart from top to bottom. The top of the piston chamber has an opening for the piston component to extend into. A wave plate is disposed inside the wave chamber. The drive assembly is connected to the piston component and the baffle to drive the piston component and the baffle to reciprocate together. This design has a simple and compact structure and a simple drive system. Only one drive assembly is needed to reciprocate to drive the piston component to move, thereby continuously spraying water flow, so that the waves have good continuity.

The invention provides an artificial wave generating device, comprising at least one functional trigger unit, wherein said trigger unit comprises: a trigger tank configured to store pressurized air; a trigger gun of tubular shape, arranged horizontally and connected in fluid communication with said trigger tank by a connecting pipe; a trip valve located above the connecting pipe downstream of the trigger tank; an aeration / vacuum valve located above the connecting pipe downstream of the trip valve; wherein said trigger gun is arranged at a level below or at the same level where the trigger tank is arranged; said at least one trigger unit is connected in fluid communication with at least one pressurized air generating pneumatic means; and a remote control and drive unit configured to actuate at least the trip valves and the aeration / vacuum valve. The invention also provides a method for the generation of artificial waves using said device.

An integrated swimming trainer comprises a swimming pool and a swimming pump assembly installed at one end of the swimming pool, the swimming pump assembly comprises a shell, a first honeycomb rectifying plate, a hydraulic motor, an impeller assembly, a second honeycomb rectifying plate, a flow guide plate and a rack, the first honeycomb rectifying plate, the hydraulic motor, the impeller assembly, the second honeycomb rectifying plate, the flow guide plate and the rack are contained in the shell, the hydraulic motor is arranged at the bottom of the rack, an output shaft of the hydraulic motor is connected to the impeller assembly, a second honeycomb rectifying plate is arranged in the water outlet direction of the impeller assembly, a water sump is formed among the first honeycomb rectifying plate, the second honeycomb rectifying plate and the rack, a plurality of guide plates are arranged in the water sump, and the impeller assembly is formed by splicing a plurality of blades. The impeller assembly is driven by the hydraulic motor to rotate so as to generate the artificial waves, and therefore a user can carry out swimming training in the artificial waves.

The present invention relates to a wave pool for surfing comprising a wave generation system formed by individual modules, the movement variables of which are controlled sequentially as a whole and individually via a centralised control system to push a mass of water forward and backward using partially submerged gates. Depending on the geometry of the pool, these two movements can be used to provide two waves with identical characteristics on each side of the pool. Alternatively, a single side can be used in conjunction with the modules located at a 45° angle to maximise the energy of each movement, provide an increasingly longer wave, and have pools with considerable lengths. Once movement is generated, the pushed mass of water travels a ride length before reaching the reef that is arranged at a diagonal angle to the trajectory of said water, and, upon encountering same, the wave breaks. This break gives rise to a wave that can differ depending on its initial characteristics, which exist throughout the bathymetry, which exhibits specific fixed characteristics. The shape of the pool is contained by a structure that is defined to achieve harmony in terms of frequency and quality of the generated waves and that sends the water resulting from the generation of waves to a mitigation channel located at each end of the pool. The mass of water resulting from these movements is collected in this channel and prevents water reflection and turbulence, in turn allowing the water to return naturally by gravity to maintain the level of water in the pool. A tank outside the pool can be used to raise or lower the water level, simulating the effect of a tide in a controlled environment based on the type of waves required, allowing different configurations of both individual and group waves for different surfer skill levels such as beginner, intermediate and advanced.

The application relates to a self-moving bionic driving wave-boosting device and method, which comprises a bearing platform, at least one rudder arranged below the bearing platform, a modular bionic power device and a running and operation control chamber installed on the bearing platform and used for driving the bearing platform to run and boost sea waves, and a float having at least two floaters symmetrically connected to the left and right sides below the bearing platform. The application can run to the beach where artificial wave boosting is needed to provide the artificial wave boosting service, and can realize adjustable artificial simulation of the ocean wave environment without damaging any natural environment. Since the application does not need to build any fixed building, the application does not need to occupy land and does not need to specially build any building, so compared with other artificial wave boosting facilities, the application can save a large amount of construction cost, and can run to a new beach to provide the artificial wave boosting service according to the user demand.

The present invention discloses a water surface garbage treatment device, which relates to the technical field of water surface garbage treatment, including a wave-making and flow-pushing device and a water surface garbage collection device; the wave-making and flow-pushing device includes a cylinder body, a linear drive mechanism is provided on the cylinder body, a wave-making ring for artificial wave-making on the water surface is suspended by a hanger at the free end of the linear drive mechanism, the inner part of the cylinder body is divided into an upper cylinder chamber and a lower cylinder chamber, the upper cylinder chamber and the lower cylinder chamber are respectively provided with an adaptive upper piston and a lower piston, the top of the cylinder body is provided with a water spray mechanism communicated with the upper cylinder chamber; the bottom of the cylinder body is provided with an aeration mechanism communicated with the lower cylinder chamber. The water surface garbage collection device includes a diversion net distributed on the nearshore water surface, and a suction pipe for collecting water surface garbage is arranged at each trough of the diversion net. The present invention uses a wave-making and flow-pushing device to make artificial waves, and finally the water surface garbage collection device collects and treats the waves in a centralized manner. It has the characteristics of high water surface garbage treatment efficiency, wide treatment range, more thorough treatment, strong functionality, etc.