Journal of Chongqing Jiaotong University(Natural Science)

CarSharing Demand Estimation Model Based on Land Use Distribution Characteristics

SUN Lishan1, WANG Shunchao1, LUO Wei1, YAO Liya2, WANG Kun1

2020, 39(05): 1-6. DOI: 10.3969/j.issn.16740696.2020.05.01

Abstract ( )

PDF (2570KB) ( )

In the context of increasing traffic congestion and environmental pollution, carsharing has received widespread attention due to their advantages in resource utilization and travel volume reduction. However, due to the unclear research on the distribution mechanism of vehicle demand under the condition of sharing, the advantages and scale development of carsharing are restrained. In order to solve this problem, a method for forecasting traffic demand of carsharing based on land use characteristics was proposed. The proposed method consisted of three parts: data investigation, land use index construction and demand model building as well as verification. According to the purpose of residents travel, through the classification and statistics of POI types and distribution within the influence scope of the site, the distribution characteristics of the surrounding land of the site were refined, and the demand prediction model based on the land use indicators was established, so as to deeply explore the interaction mechanism between the carsharing demand and the surrounding land distribution characteristics. The results of model construction and verification show a good fit and compliance, which reveals and verifies the interaction between the demand of car sharing and the distribution of land. The research results are of guiding significance for the theoretical mining of the demand distribution mechanism of carsharing, and can provide support and guidance for the operation and development decisionmaking of carsharing.

References | Related Articles | Metrics

Comprehensive Evaluation of Signal Control Strategy at Urban Road Intersection

ZHAO Xing1, LIN Hao1, LIU Yi2, FENG Mingjie3

2020, 39(05): 7-13. DOI: 10.3969/j.issn.1674-0696.2020.05.02

Abstract ( )

PDF (606KB) ( )

Based on the integrated influence of the signal control strategy at urban intersections on traffic efficiency, safety and environmental benefits of intersections, a multi-level indicator system was established to reflect each benefit. The proposed system included indicators such as delay, queue length, efficiency coefficient, area density of conflicts, pollutant emissions and noise. Then, the analytic hierarchy process (AHP) was applied to evaluate the signal control strategy at the intersection. In AHP method, a two-stage-construction approach was used to build the consistent judgment matrix and to acquire the weight of each indicator. Finally, through the case study based on the simulation experiment of VISSIM, the comprehensive benefits under two kinds of fixed signal control strategies and public traffic signal priority strategy were compared. The effectiveness of the proposed evaluation method was verified and the ex-ante evaluation of the signal control strategy at intersection was realized, which provided the theoretical basis for the final control strategy decision.

References | Related Articles | Metrics

Reliability Distribution of Traffic Capacity of Urban Expressway Based on Weibull Distribution

LI Shuqing1, WANG Yanpeng1, YU Ting1, ZHAO Leina2

2020, 39(05): 14-19. DOI: 10.3969/j.issn.1674-0696.2020.05.03

Abstract ( )

PDF (531KB) ( )

At present, the reliability analysis based on the stochastic traffic capacity is mainly achieved by searching the bottleneck of the road section, but for a long road section without a defined bottleneck, the stochastic analysis result of the capacity often has a large error.It is found that Weibull distribution as the distribution function of stochastic traffic capacity is more reliable, but its parameters may be affected by many factors.Based on the above problems, the mutation probability was introduced to explain the reliability evaluation method of expressway section composed of multiple detection positions. The proposed model could give the theoretical average capacity and mutation probability of different length sections in different time periods according to the requirements. At the same time,the quantitative relationship between parameters and influencing factors was given by studying the relevant data of the expressway in Zhejiang plain area.Finally,it was found that the risk of mutation of traffic flow in expressway section or road network could be well analyzed by examples.

References | Related Articles | Metrics

Quantitative Analysis of the Visual Effect of Glare on the Night Navigation Ship Navigator

ZHU Jinshan,LI Zhirong,MA Ye,HUANG Cheng

2020, 39(05): 20-24. DOI: 10.3969/j.issn.1674-0696.2020.05.04

Abstract ( )

PDF (1367KB) ( )

In order to study the effect of glare on the ship night navigation safety in the sea light environment, the influence mechanism of glare on the night navigation ship drivers was analyzed in terms of human visual characteristics. According to the cognitive response mode of the ship navigators, the influence of glare on object recognition and visual adaptation was quantitatively analyzed from the aspects of resolving capability and visual comfort under the condition of mesopic vision. After that, a practical case of light environment of ship night navigation in Dayaowan waters in Dalian port was analyzed. The analysis results show that in the light environment of Dayaowan waters in Dalian port, the luminance, contrast and visual ergonomics of the signal light is low; and the degree of glare perception is between unbearable and interfering, and glare level is I. The research results provide an effective reference for the glare control and quantitative evaluation of the marine light environment.

References | Related Articles | Metrics

Dynamic Scheduling for Electric Logistics Vehicle of Integrated Delivery and Pickup

CHEN Yulian, WANG Tao

2020, 39(05): 25-31. DOI: 10.3969/j.issn.1674-0696.2020.05.05

Abstract ( )

PDF (699KB) ( )

As traditional fuel logistics vehicles consume non-renewable energy sources and cause air pollution problems, the electric logistics vehicle (ELV) is increasingly concerned by the government and logistics enterprises. In order to reduce the ELV delivery and pickup costs and improve the efficiency of the electric logistics vehicles, a dynamic scheduling model for ELV integrated delivery and pickup based on genetic algorithm was proposed. Considering service time, time window, battery endurance and cargo weight constraints, an ELV scheduling model was designed with the objective of optimizing the total logistics costs in the case of random location of goods collection, fixed delivery location and charging location. Genetic algorithm was used to solve the proposed model, and then the number of ELVs, the path of collection and delivery, and the path of charging navigation were planned.The simulation results show that a dynamic scheduling scheme for ELV integrated delivery and pickup can effectively reduce the logistics costs and improve the efficiency of ELV.

References | Related Articles | Metrics

Aircraft Sequencing Optimization Method Based on Runway Operation Category

ZHANG Zhaoning, LIU Kexuan

2020, 39(05): 32-37. DOI: 10.3969/j.issn.1674-0696.2020.05.06

Abstract ( )

PDF (427KB) ( )

The existing air traffic infrastructure is difficult to meet the increasing air traffic demand. As a bottleneck area of the airport, multi-runway is an important cause of airport congestion and flight delays. Aiming at the characteristics of runway taking-off and landing as well as the introduction of concept of multi-runway operation category for the actual operation model, a multi-runway airport flight optimization scheduling model suitable for various runway configurations under the relevant operation modes was established, according to the mathematical description of the problem. The objective of the proposed model was to minimize the cost of flight delay. Combining with dynamic programming and the basic theory of heuristic algorithm, the heuristic algorithm of rolling time window based on improved dynamic programming method was used to solve the problem. The impact of runway operation category, safety interval and time window size on flight delay was analyzed through case verification and the more common runway system was used for case verification. Furthermore, the computational performance of the rolling time window heuristic algorithm was analyzed. The effect of the modeling idea on the capacity evaluation as well as the effectiveness and feasibility of the proposed model and method were verified.

References | Related Articles | Metrics

Evolutionary Game Analysis of Government, Enterprises and Consumers in Post Subsidy Era of New Energy Vehicles

ZHANG Yang， LU Chenxin

2020, 39(05): 38-48. DOI: 10.3969/j.issn.1674-0696.2020.05.07

Abstract ( )

PDF (767KB) ( )

Aiming at the problems of uneven development of new energy vehicle market, insufficient core technological innovation and lack of government support, a tripartite evolutionary game model of government, enterprises and consumers based on game theory knowledge was established, trying to study the interaction mechanism among the three main bodies in the new energy vehicle industry. The evolutionary stability strategy of the proposed model was obtained by game analysis. The results show that: the unilateral evolution strategy of the government, the automobile enterprises and the consumers will be affected by the other two main strategies at the same time; in a specific situation, when the government implements subsidy decline, different levels of incentives will not change the final decision of the automobile enterprises, but the evolution speed of the automobile enterprises will change with the subsidies. The research conclusions provide references for the scientific and sustainable development of new energy vehicles in the “post subsidy era”.

References | Related Articles | Metrics

Numerical Simulation on Flow around Analogous Square Cylinders at Low Reynolds Number

DU Xiaoqing1,2，LIU Yantai1，SHI Dingjun1，MA Wenyong3

2020, 39(05): 49-57. DOI: 10.3969/j.issn.1674-0696.2020.05.08

Abstract ( )

PDF (6777KB) ( )

In order to improve the aerodynamic performance of the standard square cylinder with sharp corners and straight edges, taking analogous square cylinder modified by the shape of angle (sharp angle, fillet) and edge (straight edge, concave edge and convex edge) as research objects, the aerodynamic performance and flow field characteristics of six kinds of two-dimensional cylinders with different wind direction angles were studied under low Reynolds number by using unsteady numerical simulation method. Research results show that the modification of the angle and edge shape of the standard square cylinder can obviously change the flow field structure and improve or degrade its aerodynamic performance. Compared with the straight edge cylinder, the aerodynamic coefficient and the wind pressure coefficient of the convex edge cylinder decrease obviously, while those of the concave edge cylinder intend to increase. Compared with the sharp corner cylinder, the aerodynamic coefficient of the rounded cylinder shows a trend to decrease in all wind direction angles, and the Strouhal number increases. On the whole, among the six types of cylinder studied, the aerodynamic performance of the convex edge cylinder with rounded corners is the best, and that of the concave edge cylinder with sharp corners is the worst.

References | Related Articles | Metrics

Effect of Wind Load Simplification on the Vertical Degree of High Pier under the Action of Multiple Factors

WANG Jun1, QI Jiuliang1, ZHANG Gangling2, ZHANG Qi2, GAO Kai2

2020, 39(05): 58-64. DOI: 10.3969/j.issn.1674-0696.2020.05.09

Abstract ( )

PDF (548KB) ( )

The high pier is affected by geometrical initial defects, partial load of construction and wind load during the construction period, and the piers may be misaligned. Therefore, the bearing capacity of high pier is adversely affected. The simplified model of trapezoidal wind load was obtained through the calculation and simulation of the current code. The misalignment calculation formula of the top of high piers was derived based on the elastic stable equilibrium differential equation, with the consideration of geometrical nonlinearity. On this basis, in order to facilitate the application of site construction, five existing high piers were selected as the objects of study. Under the condition of elastic stability theory, the formula of the simplified model of trapezoidal wind load was simplified, and the influence of multi-factor coupling on the vertical degree of the high pier was analyzed in detail, with the consideration of geometrical nonlinearity. The results show that the results of the simplified model of trapezoidal wind load agree well with the results of finite element simulation of actual wind load, which is more in line with the characteristics of actual wind load. It provides method support and practical technical means for considering the influence of wind load and the control of pier top lateral displacement in the construction of high pier.

References | Related Articles | Metrics

Design of Protective Guardrail for a Yellow River Highway Bridge

LI Sida, JIAO Mingdong

2020, 39(05): 65-69. DOI: 10.3969/j.issn.1674-0696.2020.05.10

Abstract ( )

PDF (479KB) ( )

The protective capacity of guardrails for bridges, especially bridges across lines or rivers, has attracted more and more attention of traffic construction and maintenance departments. Taking the design of protective guardrail for a Yellow River highway bridge as an example, the level of guardrail protection was determined through the analysis of traffic flow and roadside risk degree; and then the shape and size of the guardrail were determined; finally, the shear bearing capacity, nominal resistance and size of the column of the guardrail were checked. The results show that the proposed design of protective guardrail can meet the protection requirements of traffic passage of bridges, and has little influence on the bearing capacity of bridges. The aesthetics and permeability can meet the current traffic and environmental requirements, and the research results can provide the referential theory and engineering experience for similar projects in the future.

References | Related Articles | Metrics

Slipform Construction Technology Based on Unbounded Characteristics of PTFE Plate

ZHANG Hongda,WU Baohua

2020, 39(05): 70-75. DOI: 10.3969/j.issn.1674-0696.2020.05.11

Abstract ( )

PDF (3524KB) ( )

Based on the unbounded characteristic of PTFE plate, a kind of non-adhesive sliding mode construction technology was proposed. Through the comparative test of slip lift under different concrete strength conditions, the technological performance of the proposed construction technology was explored. The results show that: the proposed construction technology reduces the bonding force between the face slab and the concrete, eliminates the formwork mucous membrane phenomenon caused by the inaccurate control of the concrete strength during the traditional slipform construction, solves the influence of soft demolding sliding on the disturbance of pier concrete in the traditional slipform construction, and can guarantee the quality of pier well.

References | Related Articles | Metrics

Road Performance of SBS-PU Composite Modified Asphalt and Its Mixture

ZHANG Zhengqi1，ZHANG Yingnan1，HUANG Shuolei1,2

2020, 39(05): 76-84. DOI: 10.3969/j.issn.1674-0696.2020.05.12

Abstract ( )

PDF (1743KB) ( )

SBS-PU composite modified asphalt with high viscosity and high elasticity properties was prepared based on composite modification technology. Its technical performance was evaluated by conventional performance test, multi-stress creep recovery (MSCR) test and bending beam rheological (BBR) test of the asphalt. On this basis, SMA-13 asphalt mixture was prepared with SBS-PU composite modified asphalt as binder, and its high-temperature rutting resistance, low-temperature cracking resistance, water stability and fatigue resistance were tested by rutting test, low-temperature bending test, freeze-thaw splitting test, Hamburg rutting test and indirect tensile fatigue test. At the same time, the technical properties of SMA-13 asphalt mixture were compared with those of TPS, SINOTPS, SBS and polyurethane (PU) modified asphalt mixture which were common in the market. The results show that SBS-PU composite modified asphalt prepared by composite modification technology meets the requirements of high viscosity and high elasticity asphalt, and has well high and low temperature performance and storage stability. The viscosity and elastic recovery of SBS-PU composite modified asphalt at 60 ℃ reaches 34 217 Pa.s and 97% respectively, which is twice and three times as much as that of PU modified asphalt. Its viscosity at 60 ℃ is higher than that of TPS modified asphalt, lower than that of SINOTPS modified asphalt, and its storage stability is higher than that of SBS, TPS and SINOTPS modified asphalt. Compared with PU modified asphalt, it has excellent properties of high viscosity and high elasticity. The high and low temperature performance and fatigue resistance of SBS-PU composite modified asphalt mixture are higher than those of TPS modified asphalt mixture, and lower than those of SINOTPS modified asphalt mixture. Generally, SBS-PU composite modified asphalt mixture has better high and low temperature performance and fatigue resistance. The water damage resistance of SBS-PU composite modified asphalt mixture under the action of hydrothermal coupling is slightly lower than that of TPS modified asphalt mixture, but it still meets relevant technical standards.

References | Related Articles | Metrics

Experimental Study on Dynamic Modulus of Iron Tailings Asphalt Mixture

XIAO Qingyi1，YU Tianhang1，CHEN Xiangyang1，LI Zhengzhong2

2020, 39(05): 85-90. DOI: 10.3969/j.issn.1674-0696.2020.05.13

Abstract ( )

PDF (1384KB) ( )

Three groups of AC-13C asphalt mixtures were designed according to different iron tailings content. Through the high and low temperature performance test and soaking Hamburg rutting test, it is shown that the high and low temperature performance of iron tailings asphalt mixture is good, and the water stability is lower than that of the reference group on the premise of meeting the requirements. The dynamic modulus and phase angle of three groups of mixture was tested by asphalt mixture performance tester (AMPT Pro). The test results show that with the increase of loading frequency, the increase of dynamic modulus of iron tailings asphalt mixture is smaller than that of ordinary mixture; the phase angle decreases with the increase of loading frequency at low and normal temperature, and increases with the increase of loading frequency when the temperature is higher than 35 ℃. According to the principle of time-temperature equivalence, the main dynamic modulus curve at the reference temperature of 20 ℃ is obtained by nonlinear least squares fitting. The dynamic modulus at any frequency can be found through the main curve, and the dynamic response characteristics of the iron tailings asphalt mixture can be further obtained.

References | Related Articles | Metrics

Evaluation Method of Mixing Uniformity of Cement Stabilized Macadam Based on Quadrilateral Static Moment Theory

CAO Yuanwen1, YUN Qingqing1, LI Yanan2,LIN Yanwen1, YANG Guolin1

2020, 39(05): 91-96. DOI: 10.3969/j.issn.1674-0696.2020.05.14

Abstract ( )

PDF (3815KB) ( )

In order to better evaluate whether the distribution of coarse and fine aggregate was uniform in the mixing process of cement stabilized macadam, the image of newly-mixed cement stabilized macadam was analyzed and processed by digital image technology. The mathematical analysis model of mixing uniformity was established. Based on the quadrilateral static moment method, the distribution uniformity coefficient and area ratio coefficient of the aggregate were obtained respectively, and verified by engineering experiments. The results show that: by use of the mathematical model established by the theory of quadrilateral static moment and the uniformity coefficient and area ratio coefficient obtained by the uniformity evaluation method, the mixing uniformity of the newly-mixed cement stabilized macadam can be better judged.

References | Related Articles | Metrics

Experimental Study on Influence of Impact Angle of Mountain Torrent on Distribution Rule of Impact Force on Subgrade

WANG He, CHEN Hongkai, ZHANG Jinhao, WANG Qun

2020, 39(05): 97-102. DOI: 10.3969/j.issn.1674-0696.2020.05.15

Abstract ( )

PDF (2519KB) ( )

In order to study the distribution of impact force on subgrade F under the impact of mountain torrent with different impact angle θ, the indoor model test was carried out. Firstly, the dynamic strain system and high-definition camera were set up on the fourteen measuring points on the tested subgrade panel, and five impact angles which were 15°, 30°, 45°, 60 ° and 70 ° were selected to simulate the mountain torrent impact. Secondly, the impact force-time history (F-t) curve of subgrade under the impact of mountain torrent was analyzed. Finally, combining with the video data recorded by high-definition camera, the influence rule of the impact angle θ of mountain torrent on the distribution of the impact force on subgrade F was studied. The results show that: the mountain torrents that impact the subgrade with five different impact angles all have obvious superelevation at the bend of the flow area, and there are array flow phenomena at the upper and right measuring points of subgrade. When the impact angle θ is 15°, the mountain torrent impact force is the largest, and the measuring point No. 9 at the lower part of the subgrade is firstly impacted by mountain torrent, while the measuring point No. 13 at the upper right part is the last to suffer from mountain torrent impact. Regardless of the impact angle, the maximum impact force on subgrade Fmax appears at the lower side of the subgrade near the gully, and the order is Fmax,15°>Fmax,45°>Fmax,30°>Fmax,75°>Fmax,60°. And the impact angle θ of mountain torrent has a great influence on the distribution of the average impact force on subgrade Fm, and the order is Fm,15°>Fm,30°>Fm,75°>Fm,45°>Fm,60°.

References | Related Articles | Metrics

Design and Application of A Step-Type Composite Infiltration System

TU Shurong1, ZHU Mengjun2, ZENG Song2, YUAN Qingzhou1

2020, 39(05): 103-107. DOI: 10.3969/j.issn.1674-0696.2020.05.16

Abstract ( )

PDF (1035KB) ( )

In order to reduce the pavement runoff pollution and meet the needs of slope vegetation irrigation, a step-type composite infiltration system was designed.Firstly, the technical performance and economy of four kinds of percolation materials were compared and analyzed, and two kinds of porous percolation materials with high cost-effective, coal slag and zeolite, were screened out. Secondly, a step-type composite infiltration system composed of quartz sand, coal slag, zeolite and sawdust was proposed combined with the site conditions of mountainous expressway and the prevention requirements of pavement runoff pollution. And the optimum structure combination and design thickness of composite infiltration layer were put forward. Finally, the simulation calculation and analogy analysis of the proposed infiltration system were carried out. The results show that: the step-type composite infiltration system can effectively remove pollutants in pavement runoff such as particles (SS), COD and N, P. The pavement runoff treated by the proposed step-type composite infiltration system can meet the surface water discharge requirements, which can be used for vegetation irrigation on road slopes. Mover, the proposed step-type composite infiltration system is not easily blocked.

References | Related Articles | Metrics

Optimization of the Ore Ship Route of the Yangtze River Channel Considering the Tide

JI Mingjun，WANG Heng，GAO Zhendi，ZHANG Jinwei

2020, 39(05): 108-116. DOI: 10.3969/j.issn.1674-0696.2020.05.17

Abstract ( )

PDF (553KB) ( )

According to the characteristics of the Yangtze River channel, the best route design was provided for the ore port cluster along the Yangtze River. The proposed route was modeled by considering the ships navigation affected by channel class and port tide as well as the fuel consumption of the ship affected by ship speed and load capacity. By applying the proposed model to the actual case, it was found that there were certain limitations in solving large-scale examples. Therefore, a solution scheme of genetic algorithm for inland river transportation was proposed. Through comparison, it is found that the solution accuracy of the proposed algorithm is approximately the same as Lingo method, and the solution efficiency of the proposed algorithm is significantly improved, which verifies the efficiency of the proposed algorithm.

References | Related Articles | Metrics

Safety Assessment Method for the Influence of High-Speed Railway Bridge Construction on Power Station Operation

JIANG Haitao

2020, 39(05): 117-122. DOI: 10.3969/j.issn.1674-0696.2020.05.18

Abstract ( )

PDF (1005KB) ( )

The main bridge of Zigong Fushun Tuojiang River Grand Bridge of southern Sichuan intercity railway is located in the reservoir area of Huangnitan hydropower station, which is close to the power station (only about 155~262m away from the dam). Therefore, the bridge construction may affect the safe operation of the power station.Taking this as an example, the safety assessment methods of the current situation of the power station and the influence of the bridge construction period and the operation period on the power station were introduced. The state inspection method and parameter review method were mainly used in the current situation assessment, the standard conformity inspection method was mainly used in the safety assessment in the construction period, and the dynamic analysis method and the special evaluation method were mainly used in the safety assessment in the operation period.Thus, a whole set of safety assessment methods for the impact of bridge construction on the operation of power station in the reservoir area was formed, and specific measures to reduce or eliminate safety threats were proposed. The results show that the proposed assessment method provides effective optimization suggestions for the bridge design,provides guidance for the construction and operation of the bridge and the daily management of the power station, and realizes the operation safety of the power station.

References | Related Articles | Metrics

Simulation Analysis on Operating Speed of Heavy-Haul Vehicle in High Speed Climbing Section of Mountainous Area

PENG Jinshuan，ZHU Ke，ZHANG Yingqi，SHAO Yiming，XU Lei

2020, 39(05): 123-129. DOI: 10.3969/j.issn.1674-0696.2020.05.19

Abstract ( )

PDF (2478KB) ( )

In order to study the change regularity of the operating speed of heavy-haul vehicles during the climbing process, the TruckSim dynamics simulation software was used to establish the operating speed simulation system of heavy-haul vehicles in climbing section. The influence of longitudinal gradient, initial speed, load mass and specific power on the climbing speed of vehicles was analyzed. The research results show that during the climbing process, the vehicle is affected by the slope resistance, and the speed continues to decrease. After shifting, the speed has picked up. The steeper the gradient, the faster the speed decreases, and the lower the minimum speed and the stable speed reach, the more frequent the shift is. The initial speed is independent of the minimum speed and the stable speed. The larger the load mass, the faster the speed decreases. The higher the specific power, the better the climbing performance of the vehicle. According to the multi-factor comprehensive analysis, when the initial speed of the vehicle is less than 70 km·h-1, the gradient is less than 5%, and the load mass is less than 35 t during the climbing process, the interference to other vehicles is small and the safety is high, which can provide reference for the design of road profile and vehicle management of road freight enterprises.

References | Related Articles | Metrics

Decision Model of Vehicle Lane Change Based on Bayesian Network

ZHAO Shuen，KE Tao，LIU Ping

2020, 39(05): 130-137. DOI: 10.3969/j.issn.1674-0696.2020.05.20

Abstract ( )

PDF (2089KB) ( )

Lane change behavior is one of the typical driving behaviors in micro traffic flow. Researching vehicle lane change decision-making model can provide a theoretical basis for cooperative adaptive cruise control (CACC) of automatic driving vehicles, and can also effectively reduce the traffic accidents caused by dangerous lane-changing behavior. To make the lane change model more adaptable to the dynamic traffic environment, according to the measured test data of NGSIM project of Federal Highway Administration of the U.S. Department of Transportation, the relevant characteristic parameters such as own vehicle speed, acceleration and relative time distance between vehicles and interactive vehicles during the decision-making of vehicle lane change were analyzed. And by using the theory of Bayesian network artificial intelligence, the decision-making model of vehicle lane change was established, which was compared with the measured data of NGSIM through simulation analysis. The results show that the average decision-making accuracy and recognition rate of the lane change decision-making model based on Bayesian network can reach more than 89%, which has good lane change decision-making effect, and can provide theoretical reference for CACC of intelligent vehicles and depth learning of automatic driving.

References | Related Articles | Metrics

Diversified Design of Onshore Power Supply for Ships and Its Application

DENG Renren1,2，ZUO Hongbing1,2, HE Shengli1,2, TIAN Dawei1,2, DENG Feng1,2, SONG Jinhai1,2

2020, 39(05): 138-144. DOI: 10.3969/j.issn.1674-0696.2020.05.21

Abstract ( )

PDF (1628KB) ( )

Onshore power supply is one of the important measures for developing green port. But there is no effective solution presently to solve the practical problems for the composition of shore power supply, the arrangement of connection devices and the connection efficiency under different working conditions. Furthermore, too many construction projects do not meet the needs of practical application, which will cause excessive configuration, high cost, difficulty to recover investment and other problems. The diversified design was proposed. According to the demand of users and the actual situation of ship using onshore power, the design of onshore based power supply was completed by the typical single-berth onshore power scheme to meet the functional and economic demand of port power use. Based on the modular design idea, the practical application of the proposed scheme was mainly reflected in the flexible configuration and fast connection of power supply capacity and the number of interfaces. In addition, the overall solution of onshore power to adapt to the changing water level was proposed, the design idea of ship-to-shore connection to adapt to the complex environment was also proposed, so as to provide technical support for the full coverage of port shore power.

References | Related Articles | Metrics

Archive