共享单车从兴起到逐步成熟,已成为公众慢行出行的重要方式之一,对缓解城市交通拥堵和构建绿色交通体系起到了积极作用.共享单车的发展经历了探索发展、无序发展、转型发展到再发展这几个阶段,每个阶段都有不同的发展特征,面临着不同的问题.新时期,结合新技术的发展和城市交通发展的新趋势,对共享单车如何实现可持续发展提出了相关建议.
伴随新冠疫情的持续发展,由于旅客对公共交通方式的安全担心,以及旅客量的大幅度减少,必然对机场的陆侧交通体系产生显著的影响.分析航空运输业在疫情不同阶段的影响,并结合浦东机场的客、货运输量的变化做了重点阐述.同时,结合浦东机场调查数据对陆侧交通体系的影响做了详细分析,包括停车影响、出租车影响、公共交通影响以及行业收入的影响.为了应对疫情,机场实施了加强疫情消毒、优化陆侧组织、智能化调度管理等策略,提升陆侧交通服务水平.
该文基于对多个轨交站点居民轨道接驳特征展开的相关调查,分析了自2016年以来,共享单车的兴起对上海市轨道交通接驳方式的影响,并在此基础上进一步分析了共享单车接驳比重上升所带来的问题,最后对上海市未来轨道站点如何优化共享单车的配套服务提出相关建议.
首先对浦东国际机场市外旅客的出行特征进行了分析,在此基础上指出了现状浦东机场陆侧对外交通存在的问题.最后结合浦东国际机场的发展定位,提出浦东机场应结合上海东站规划,综合考虑铁路线路的安排,积极推进机场联络线建设以及开通城市航站楼.
This paper analyzes the structure of passengers to the airport,and studies the transportation needs of all types of passengers. Through comparing the transportation modes of passengers to different kinds of airports and transportation modes with those to the railway station,it analyzes the characteristics of passengers′choices about transportation modes in order to provide basis for construction of airport collection and distribution transportation. Then,it calculates the passenger collection and distribution pattern of airports in different scales,thus determines the scale of collection and distribution facilities for airports. Ultimately,this article takes Shanghai Hongqiao Airport,Changsha Huanghua Airport and Wenzhou Yongqiang Airport as examples to illustrate the methods for planning collection and distribution system for airports in different scales and the same airport at different stages.
机动车增长与分布在经济发展的不同阶段及城市不同区域,都具有一定的规律性.在研究国外机动车增长与分布规律的基础上,分析了国内城市北京、上海、广州的机动车发展与分布特征.通过分析得到:城市的机动化发展与经济发展具有密切的联系,并且在城市中心城区和郊区的发展具有明显差异.因此,综合考虑城市道路承载力和汽车产业的发展,应该采用差别化的机动车发展策略.
The port is gateway and channel of external trade. Today the port is becoming a comprehensive region where people could work,relax and enjoy themselves. Taking Zhuhai Port of Hong Kong-Zhuhai-Macao Bridge as an example,this paper analyzes the traffic characteristic of large inland port,as well as discusses the dynamic traffic organization and static traffic facilities preliminarily,which provides relevant experience as reference for the integrative traffic organization of large inland port.
Motor vehicle traffic is an important factor influencing the urban development.Different vehicle development strategies for urban traffic produce different results.This article first analyzes the strategy of Tokyo and Hongkong then summarizes the experience of its development.And then analyzes the different strategies taken in Shanghai and Beijing and the results of the traffic.Through the comparative analysis to get: If do not take appropriate control measures at the beginning of the motorization,the growth of the motor vehicle is amazing,and will soon be Saturated,eventually lead to severe traffic congestion.If the motor vehicle has been already saturated and public transport especially rail transit imperfect circumstances,the effect to take demand management measures is not obvious,ant the price is larger.
The paper designed a remote control system for fully automatic rice cooker.In this system a simplified TCP/IP protocol is applied to communicate internet network with STC89C58RD+,and then the rice cooker is controlled by infrared communication method.The Website can accept request from user,and then the network programs can process the communication between internet network and the microcontroller which controls the fully automatic rice cooker.Additionally,some mechanical installations for storing rice,taking rice,washing rice,placing rice and adding water,are designed to achieve mechanical-electrical integration.The proposed system is tested,and the experiment results show that the system has some advantages such as simple operation,low cost,high stability and good expansibility.
The pattern of products online mass customization had become possible and future development.Starting with classification of the customer demand,it inquiries identification method and models of multifarious configuration elements.The geometric interpretation of product configuration elements types are come up with.Considering effects from products types and comprehensive online mass customization ability of enterprise in detail,structural optimization strategy on product configuration elements against service provider who let customers customizes products online.Finally,it is proved feasible and effective about methods described by discussing identification process of various types of product configuration elements from a motorcycle product in detail.
A new remote control system based on STC89C58RD+ and ENC28J60 is designed.The system applies the simplified TCP/IP protocol to communicate IPv4 network with microcontroller,and the microcontroller can control multiple home appliances simultaneously by using infrared communication.The website can accept a lot of requests from multiple users.The network programs process the communication between the network and the corresponding microcontroller with aim of providing a remote control scheme,among which the multi-user can control multiple home appliances successfully.Experiments are carried out,and the results show that the rice cooker can be controlled remotely through internet.
The intersection with expressway off-ramp means there is an off-ramp behind the intersection. Based on the analysis of servicing area of off-ramp and the characteristic of the turning traffic of the intersection with expressway off-ramp, the paper establishes a model to the characteristics of traffic. It also raises some methods of traffic organizing of this kind of level intersection. which has important reference value to guide practical work.
Because of the Vehicle performance and overloading,heavy vehicles have low speed and interfere with cars seriously and cause to decrease road capacity.From mechanism of heavy vehicles traffic impact,this paper analyses road capacity and vehicle delay under different cases and gets the optimal operation of heavy vehicle's traveling.Finally the design method of express lane was put forward.
In order to improve the stadium lighting effects,lighthouse is designed on the original steel awning,which is composed of shuttle shape truss and cable as suspension cable structure.Construction process and cable length,tension equipment,key points for operation were introduced in detail.Further,simulation calculation was done by MIDAS software,and construction monitoring was done during tension.Both of them provide reference for stability research of shuttle shape truss.
Traffic simulation model is being used widely in urban transport planning,and the accuracy of the model is depended on reliable data.This paper is mainly about how to build and check a reliable model with the inadequate data, through the process of building Wuhan City road traffic model.
The arterial corridor is defined as an arterial system contained the axial arterial for through traffic and the parallel inferior road.It is the crucial component of the urban network.With the urban motorization's fast improvement and the high density land development on the both sides of the arterial,the inadaptability of the traffic and the land use along the line become prominent.Through the case analysis of several main arterial corridor of Shanghai,the main problem of the design mode of the arterial corridor is confirmed.Against these problems,the design modes of the arterial corridor domestic and abroad are compared based on the function orientation.Bring out a serious of design modes of the arterial corridor adapted for domestic urban traffic with the several affecting factors of the arterial traffic function.
The multifunctional report hall for Sihe Mine of Jincheng is a beam string structure.Assembling on the ground and pretension for single beam string structure of this project are introduced.Trusses are installed using accumulative sliding construction methods.According to plenty of simulation calculations and analysis of scheme comparison,the control of cable force was dominated,and the control of elongation value was subsidiary.The cable force,elongation values,stress of steel structure and deformation were monitored,which ensure the progress of construction.Practices show that measurement results are verified theoretical results,which indicate the construction simulation calculations are correct and reliable.
Reasonably organizing the left-turn flow at the at-grade intersection can directly impact the driving safety and road capacity.Left-turn prohibition is an important approach to organizing the surface intersection,and its effects are relevant to many factors.Based on the characteristics of the left-turn traffic flow,this paper analyzes the mechanism of intersection delay change after the left-turn is prohibited.Through reorganization of the traffic flow while left-turn is prohibited,a computing model for intersection delay change is developed.Through the modeling analysis,it finds out some important boundary conditions including intersection saturation,network density and left-turn ratio.Meanwhile the paper analyzes the way these boundary conditions impact on the left-turn prohibition effects.
Drawing lessons from available research achievement,the induction is presented about the mechanism of multi-ring roads development.Comparing latest traffic flow with last year's,the impact of the middle-ring road on the other two ring roads in Shanghai road network is analyzed.Middle-ring road's transport function is explained further according to the function of ring roads and the conclusions of impact analysis.
Local roads play an important role in urban street systems, just like capillaries do in human bodies. However, local roads have not gained sufficient attention thus far in the planning and design process of urban street systems in China. This paper discusses issues on road functional classifications, road network density, and cross-sectional design in local road development, and provides a detailed analysis of local road functionalities. According to road functional classifications typically adopted abroad, the paper classifies local roads into three functionalities, namely, through-traffic, neighborhood-specific, and special use, and specifies their typical functions and application scopes. Finally, the paper further analyzes local road density, right-of-way, lane-width, separation facilities, and road-side parking issues.