34results about How to "Has practical engineering application value" patented technology

The invention discloses a method for controlling the double-layer boundary of the road network in the urban congestion area. The microscopic simulation model of the road network is established by using the GPS data of the taxi and the field survey data, and the macro basic diagram (MFD) of the road network is constructed at the same time. Firstly, according to the road network boundary control method including control delay (first-level control), the expected total amount of road network entry is determined, and then each control intersection is expanded into a virtual sub-area road network in a certain way to reduce the variance of road network density distribution In order to control the target, considering the queuing overflow control caused by the control of the total amount of road network entry, the distribution method of the total amount of road network entry (the second layer of control) is developed. Compared with the commonly used boundary control method, the optimal control method of total control allocation improves the performance of the road network stably and effectively, avoids the queue overflow caused by the control of the road network, and has practical engineering application value.

The invention provides a method for inhibiting radiated emission of magnetic isolation communication equipment in a power system. The method comprises the following steps that radiated emission in the magnetic isolation communication equipment is divided into input-to-output dipole radiation and fringe radiation; a board-level embedded type splicing capacitance method is adopted to inhibit input-to-output dipole radiation; a through hole guardrail fringe protection method is adopted to inhibit fringe radiation. The method is low in cost, easy to realize, small in generated capacitance parasitic inductance value and capable of obviously reducing radiation emission in the magnetic isolation communication equipment in the system, guarantees the stability and the reliability of a communication system in intelligent power grid construction, and has practical engineering application value.

The invention discloses a dynamic control method for network-connected vehicle special lanes based on permeability, the steps of which include: 1 collecting the total number of vehicles entering each lane in the current time period and the number of network-connected vehicles; 2 judging whether the current time period needs to be set 3. Use the algorithm to determine the lane number of the dedicated lane for connected vehicles in the current time period; 4. Send the dedicated lane number for connected vehicles to connected vehicles on the road section, and at the same time control the intelligent Luminous road studs are illuminated; 5. Repeat the above steps to determine the lane number of the dedicated lane for networked vehicles in the next time period. The invention can dynamically select the position of the dedicated lane for the networked vehicle in real time according to the penetration rate of the networked vehicle of each lane, reduce the number of necessary lane changes of vehicles, reduce the conflict of lane change between vehicles, and improve the safety and traffic safety of traffic flow operation. flow efficiency.

The invention discloses an ultrasonic-assisted equal-channel angular stretching processing method. Aiming at defects such as bending in the angular stretching process and inherent deformation of the stretching deformation in the conventional equal-channel angular stretching process, the present invention The bending mechanism in the conventional equal-channel angular stretching process is replaced by ultrasonic impact forging with a direction perpendicular to the continuous shear plane; finally, the foil or wire can be repeated for multiple passes without obvious cross-sectional thinning Large effective plastic deformation can be obtained through the channel corner area of ​​equal cross-section, the effect of obtaining ultra-fine grain and improving the original texture structure, and the reduction of required pulling force is convenient for continuous processing, which has practical engineering application value.

The invention discloses a multi-scale iteration method for efficiently solving a state of a large-scale nonlinear random structure system. The method comprises the following steps: establishing a moment function equation of a state response of the nonlinear random structure system; establishing an enclosed moment function equation of the state response by a Gauss truncation technology; establishing a multi-scale discrete interval within a time domain; and iteratively solving the enclosed moment function equation of the state response within the multi-scale interval by a Runge-Kutta method to obtain a statistical characteristic of the state response of the nonlinear random structure system finally. Through adoption of the multi-scale iteration method, simultaneous solving of three random differential equations can be avoided; a large quantity of computer storage resources are saved; and the computation efficiency is increased greatly. Moreover, iteration times can be adjusted automatically through error control and initial value setting, so that accelerated convergence of a solving process is realized. An efficient solving method is provided for state analysis of the large-scale nonlinear random structure system, and the method has an actual engineering application value.

The invention relates to an indoor testing apparatus and indoor testing method for simulating pile side post-grouting. The indoor testing apparatus comprises an air compressor, a grout storage tank and an interface shearing device, wherein the bottom of an upper shearing box pushed into the interface shearing device is provided with a grouting hole; and the bottom of the grout storage tank is connected with the grouting hole in the upper shearing box through a grouting valve and a grout inlet pipe. Cement grout is injected into the contact surface of a test soil body and concrete at a designedgrouting position via the grout inlet pipe; and then the physical and chemical properties of a pile-soil interface after pile side post-grouting are observed and analyzed through direct shear testingand subsequent soil body excavation. Compared with the prior art, the indoor testing apparatus and indoor testing method provided by the invention can be used for simulation study of the influence ofpile side post-grouting at different positions of the body of an on-site pile on the bearing mechanism of the foundation pile, can comprehensively study the influence of grouting and unloading conditions on pile side post-grouting effect by controlling different grouting and unloading conditions, are beneficial for revealing the grouting mechanism of pile side post-grouting, and provide referenceand the like for the design, construction and the like of post-grouting in practical pile foundation projects.