Based on the general design of the first-phase project of Nanjing Metro Line 2, this paper systematically puts forward four concepts of design work, namely, safe subway concept, public subway concept, green subway concept and operating subway concept, and expounds the connotations of these concepts. At the same time, combined with the actual situation of the project, some suggestions are put forward to further explain the concept.
1 Nanjing urban characteristics and subway construction base points
Nanjing's urban development goals are: a city full of economic vitality-a modern central city in the lower reaches of the Yangtze River; Cities with cultural characteristics-historical and cultural cities with great international influence; The city with the best living environment-a city where man and nature live in harmony.
As an important infrastructure of the city, the subway not only serves the city, but also integrates people into the city. Subway construction should reflect the characteristics of the city and adapt to the characteristics of the city. Therefore, the basic points of the construction of Nanjing Metro Line 2 are: increasing the economic vitality of Nanjing city; Reflect the cultural characteristics of Nanjing city; Beautify the living environment of Nanjing city; Improve the economic benefits of the subway network.
2 four concepts of design work
Ideas guide actions. Only the right idea will bring valuable actions. In view of the above characteristics of Nanjing city and the basic points of Nanjing subway construction, the tender documents put forward four ideas for the design of Nanjing subway line 2.
The concept of "safe subway": implement the awareness of safety service, build safety guarantee facilities and establish a safe operation system. Subway operation, safety
First, realize the basic goal of building a subway.
The concept of "public subway": the design of service for construction: the construction of operation service; Operation serves passengers. People-oriented, convenient service, and realize the social benefits of subway construction.
The concept of "green subway": improve the artistic level of subway, embody the history and culture of Nanjing, and realize the life between man and nature. Environmental protection and energy saving, beautify the environment, and realize the environmental benefits of subway construction.
The concept of "operating subway": create the operating cost of subway operating resources and improve the operating income. Resources * * * to enjoy, comprehensive development, realize the economic benefits of subway construction.
3 the implementation of the concept of safe subway construction
The design, construction and transportation of subway must ensure safety, people-oriented, meet functions and protect the environment. Subway operation safety comes first. Safe transportation of passengers is the primary goal of subway operation.
The safety of subway operation is closely related to its hardware facilities and software services. As the overall design unit, the design and construction of the first phase of Nanjing Metro Line 2 should thoroughly implement the concept of "safe subway" and provide satisfactory services to the owners from two aspects: the construction of hardware facilities and the establishment of software services.
From the perspective of "design monitoring", the overall design unit will put forward the "overall requirements for subway safety design" from the aspects of design concept, design standard, design scheme and technical measures, so as to design and control how to build safety-related hardware facilities.
The overall design unit will make suggestions from the perspective of "owner's staff" (including subway fire emergency plan, train tunnel evacuation plan, etc.). ) How to ensure the safe operation of the subway from the aspects of operating organization, traffic management, station management, equipment management and personnel training is provided for the owner's reference.
Subway safety involves all aspects. There are also many disasters that affect the safe operation of subway, such as fire, wind, hail, earthquake, lightning strike, explosion and epidemic, among which the prevention and rescue of subway fire is the most important. Especially, most lines of Nanjing Metro Line 2 are underground, so it is more difficult to prevent and rescue fires. Taking the subway fire prevention and rescue as an example, the tender document puts forward the "Summary of subway fire prevention design" (including: basic principles, building fire prevention, fire water supply and fire extinguishing device, vehicle fire prevention, emergency ventilation and smoke holding, disaster prevention communication, disaster prevention electricity consumption and evacuation indication signs, and automatic fire alarm system), which is a part of the "General requirements for subway safety design"; In addition, the essentials of subway fire emergency plan (including: plan summary, driver emergency treatment, passenger emergency treatment, emergency operation of control center, station staff response, guiding personnel response, subway fire prevention essentials, etc.). ) is a part of the "Metro Safety Operation Plan".
4. Suggestions on implementing the concept of public subway
Architectural service design; Construction of operational services; Operation serves passengers. People-oriented, convenient service. The social benefits of the subway are reflected in public services. This requires that the "public" service consciousness must be emphasized in the process of subway design, construction and operation. The demand of passengers is the pursuit of subway.
Times have changed, and so have the needs of passengers. The design of subway station should focus on how to adapt to the changes of the times, provide high-quality services for passengers, and meet the various needs of passengers due to the improvement of their living standards.
How to reduce the burden caused by the horizontal and vertical movement from the ground entrance to the underground platform, how to reduce the inconvenience caused by transfer, how to provide convenience for the elderly, the disabled, pregnant women, children and other people with mobility difficulties, how to meet the basic use functions of passengers, how to overcome the psychological impact of underground space on passengers, how to meet the needs of added value such as culture, art and information closely related to passengers' daily life, how to provide convenience for foreigners and how to provide convenience for passengers.
Five suggestions on implementing the concept of green subway
Environment, human settlement and health are the three major themes in the world today. Therefore, the construction of Nanjing Metro Line 2 must highlight the concept of "green", that is, to improve the artistic level of the subway, reflect the history and culture of Nanjing, and realize the harmony between man and nature. Protect the environment, beautify the environment and realize the environmental benefits of subway construction.
Subway construction is a huge project in any city. If we don't pay attention to ecology, environmental protection and energy saving in the construction process and operation stage, it will have a bad impact on the urban environment. One of the future urban development goals of Nanjing is: a city with the best living environment-a city where man and nature live in harmony. Subway design must revolve around this goal, and corresponding measures must be taken to achieve this goal. In addition, the subway design should also highlight the history and culture of Nanjing and create traffic buildings with regional characteristics. Nanjing is one of the four ancient capitals in China. It is famous as the ancient capital of the Six Dynasties. It has the reputation of "Jiangnan Water Town, a national historical and cultural city and an important riverside tourist city". It is rich in natural and cultural landscapes. The interior decoration design of subway stations and the landscape design of ground stations, elevated stations, entrances and exits, wind pavilions, etc. should be integrated into the historical and regional humanistic environment, inherit the history, integrate into the city and activate the region.
6 the implementation of the concept of subway construction and operation
The concept of "managing subway" is embodied in: creating subway management resources; Reduce construction and operation costs; Increase operating income; Enjoy and develop resources in an all-round way; Optimize the management mode. In this regard, the tender documents put forward the following suggestions for reference.
6. 1 On the construction of subway management resources
(1) From the perspective of subway operation, discuss the feasibility of extending a Zhong Yan station at the southern end of Line 2.
In the latest traffic network planning in Nanjing, Nanjing Metro Line 2 will extend southward for nearly 14km to Nanjing Banqiao in the long term. At the same time, according to the latest municipal construction plan, the Ningwu line running through Banqiao and Nanjing suburbs will be relocated and rebuilt in the deleted year. Therefore, in the next design work, if necessary, we can explore the feasibility of extending Metro Line 2 to the south by transforming Ningwu Railway, that is, we can explore the feasibility of adding stations near Xishan Bridge. From the perspective of operating the subway, the Youfangqiao parking lot is located in the areas of Youfangqiao and Xishan Bridge outside the ring road. This area is outside the planning area and close to Hexi area. In addition, the geographical location is very superior. Because of this, if the line extension scheme is feasible, it can create about 150hm of operational land resources for the subway.
(2) From the perspective of subway operation, discuss the first phase of Line 2.
Feasibility of extending the seam to Xianxi area In the Feasibility Study Report of Nanjing Metro Line 2, the long-term design end point is Shinan Normal University Station in Xianxi New Town, and it is likely to continue to extend eastward to Longtan area according to the new line network planning. The construction of Metro Line 2 will certainly promote the development of the whole Xianxi area. The planned line Tongzhong Metro Line 2 extends westward along Ningwu Railway, turns eastward at the west exit of Xianlin Avenue, leads to Longtan area along Xianlin Avenue, and crosses the northern plate of Xianxi New City. As Metro Line 2 is far away from the southern part of Xianxi, in order to balance the development between north and south, in the next stage of design work, if necessary, the feasibility of leading out a branch line after Shanghai-Nanjing Gaojian Road Station will be discussed to take care of the CBD of Xianxi New City in advance.
From the perspective of operating the subway, because the land along the branch line is located on the edge of the main city. Now it is in an undeveloped state. Therefore, if the branch line is led out, it will bring great commercial development value along the branch line.
(3) About the all-round development of Han Jian.
According to the above situation and the comprehensive development suggestions of stations along the line, draw the following schematic diagram of comprehensive development resources along the line. It is suggested that the feasibility of comprehensive development should be discussed in the next stage of design at stations with development conditions such as Yuantong Station, Xiangxing Road Station, Suoheng Station, Chating Station, Daxing Palace Station, Xiao Wei Station, Xiaolingwei Station and Maqun Station.
6.2 Suggestions on reducing construction and operation costs
How to reduce the construction and operation costs? This is a hot and difficult issue in the domestic urban rail transit industry. Domestic experts are jointly tackling key problems and have achieved gratifying results. The main contents of this study include: actively promoting the localization of vehicles and electromechanical equipment; Improve operational management; Accurately estimate passenger flow; Scientifically plan the route; Adopt high technology; Reduce train formation and increase traffic density; Carefully construct and strengthen the management of engineering construction; Actively promote energy-saving design.
As the overall design unit, we will closely follow the domestic research trends and suggest to the owner that the relevant research results should be applied to the first phase of Nanjing Metro Line 2. For example, a new subway ventilation and air conditioning integrated system has been recommended in the tender documents, which is a new subway ventilation and air conditioning system with simple form, complete functions, saving room space and low cost.
6.3 Suggestions on improving operating income
In addition to establishing a reasonable fare system, the following factors can also be considered in operation:
(1) In-station service industry: vending machines are installed in the station.
(2) Property development in the station: parking garage, bicycle garage, etc. Are respectively arranged at the upper parts of the turn-back line and the intersection line.
(3) Commercial advertisements: In combination with the decoration design, educational advertisements meeting the fire protection requirements are set up in the public areas and passages of the station.
(4) Real estate development along the line: use the land for demolition, abandoned land and supporting land allocated by the government to develop office buildings, hotels and residential areas.
(5) Utilization of space under elevated section and elevated station; Set up shops, parking lots, etc.
(6) Property management: property management of contracted developed properties.
6.4 Suggestions on rosewood * * *
The construction of subway lines should be combined with the planning of urban rail transit network to achieve the purpose of resource sharing, investment saving and convenient operation. Resources * * * enjoy many aspects, and will continue to explore with the progress of the project. The contents of the tender documents mainly focus on the following two aspects:
(1) Enjoy automobile maintenance resources.
After investigation, there is a large margin for factory repair and frame repair in Xiaoxing Depot of Nanjing Metro 1 Line. Therefore, the factory repair and frame repair of the auxiliary vehicles of Line 2 need to be carried out by shunting across the line, which can be considered to be undertaken by Xiaoxing Depot of 1 Line.
(2) Access to communication system resources.
First of all, the communication system relationship between Nanjing Metro 1 Line and Line 2 can be summarized as three-dimensional intersection of lines and rings and overlapping of star network nodes. For the communication system with two lines in a star network, we can make full use of the advantages of co-location of the control center, and use the central equipment to save investment and unify management. In addition, it is suggested that the integrated wiring system should be adopted in buildings where subway personnel work intensively (such as the control center building and the office building of the depot). ). In addition, it is suggested to improve the maintenance and management mode of Nanjing Hui Di Line 2 communication system on the basis of 1 line.
Concluding remarks
Due to the limitation of understanding and the lack of information, the design concept of Nanjing Metro Line 2 put forward in the bidding documents is still incomplete, and the implementation suggestions need to be further discussed. This paper aims to attract more attention and improve it as soon as possible, so as to better provide the whole process, all-round, zero-distance and high-quality service for the owners.
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