Characteristics of Methods on the Circulation of Used Vehicles

On Aug 29 2005, the Ministry of Commerce, together with other relevant government departments, issued the Methods and the new went into effect on Oct. The used vehicle market is regarded a potential section which can incentive consumption and increase tax income as well. But the market can hardly meet the requirement of the society. The critical reason behind this is the lack of related rules. The new policy is designed to meet the demand of post-WTO conditions. The 5 chapter, 37 article M…     

Key Construction Technologies for Overlapping Twisted Shield bored Tunnels in Weak Water rich Strata(富水软弱地层中麻花型盾构隧道群施工关键技术)

The project under study is an overlapping twisted shield bored tunnels in weak water rich strata. The purpose of the study is to solve the key technological problems in the construction of the project. The optimal construction sequence of the overlapping twisted shield tunnels is determined according to the engineering geological conditions, the surrounding working environment, and theoretical analysis on the spatial relationship of the four tunnels, and verification control are carried out via monitoring means. The tunnel construction is properly timed, smart self propelled movable support jumbo is adopted, and grouting reinforcement technology is used to ensure the construction safety of the overlapping twisted shield bored tunnels. The grouting pre reinforcement technology and the clay shock technology are adopted to ensure the safety of the surrounding buildings. The technologies for the construction of the overlapping twisted shield bored tunnels described in this paper is of great significance for the construction of similar overlapping tunnels with high shield launching/receiving risks and crossing under important structures with small clearance.     

DEMANDS OF AUTO INDUSTRY FOR CORRELATED PRODUCTS

The government has clearly stated that the auto industry should become a backbone industry of China's economy. This is a strategic decision of the government to push forward the development of Chinese auto industry. The fulfilment of this objective must be well coordinated by the correlated industries. The auto industry's demands for the products of corre lated industries must be fully provided.     

China’s First Electric Bus Fleet Operating

The fleet started operation at the Line 121 of Beijing on June 21. The program is also part the demonstration of all-electric buses in China. The opening ceremony was attended by 100 representatives of the Ministry of Science and Technology (MoST), the National Development and Research Commission (NDRC), the State Bureau of Environmental Protection, the local governme nt departments and other walks of life. MA Songde, the vice science minister and FAN Boyuan, vice mayor of Beijing …     

Key Techniques for Construction of Sanyang Road Cross riverTunnel of Wuhan Rail Transit Line 7（武汉轨道交通7号线三阳路越江隧道施工关键技术）

The author focuse on the great challenges encountered during the tunneling process in the Wuhan Sanyang Road Tunnel, and the key techniques adopted to solve those problems. When tunneling in composite strata, engineers inevitably face problems such as inefficient excavation, excessive tool wear, excavation face instability and the risk of clogging. The TBM used in the project allows tool change under atmospheric pressure, which improves the efficiency of tool change and eliminated the risk of casualties during hyperbaric interventions. In terms of the tool wear and clogging, the authors propose technical solutions as follows: the optimization of the tool′s type and configuration, improvement of the central flushing system and chemical dissolution of clogging. The results indicate that through the countermeasures proposed, the tunneling efficiency can be improved effectively. They also reduce the cutter change frequency and eliminate the risk of TBM downtime. The technical achievements obtained in the construction of the Wuhan Sanyang Road Tunnel can provide technical reference for the construction of large diameter shield tunnels in composite strata in the future.     

Bookshelf

"The Research Materials Collection of the Tenth-Five-Year-Plan of China's Auto Industry" The book is jointly edited by the State Economic and Trade Commission and CATARC, including 8 parts, i.e.: The Tenth-Five-Year-Plan of the auto industry, basic research on China's auto industry, research on the development of China's auto products, research on     

Analysis on productions and sales of automobile industry in the first half of 2001

In the past half of the year, China's economy increased steadily due to the implementation of positive finance policies. The investment of capital assets and entire retail of social consumption increased by 17.6% and 10.3% respectively, compared to the same period of last year. The three-year project of saving the poverty has basically been effected and the efficiency result of     

An interview with WAN Gang——Chief Scientist of 863 Special Project for Electric Vehicle

Reporter: Will you please give an account of the development of electric vehicles in the world? Wan: The history of electric vehicle is almost the same as that of ICE vehicles. The electric vehicles have many advantages. Its drive system is of zero torque so that it creates more torsional force. Why is the electric vehicle developed slowly? The main     

Auto Industry Development Policy

Decree No. 8The National Development and Reform CommissionThe People's Republic of ChinaAccording to the Document [2004] 30 of the State Council, the Auto Industry Development Policy has passed the examination of the Sitate Development and Reform Commission and been approved by the State Council. Now it is issued and shall be effective as of the date of promulgation. The Auto Industrial Policies implemented since 1994 should end as of the date of this promulgation.MAKaiDirector of the National Development and Reform CommissionMay 21, 2004     

Key Technology of Sea crossing Interval Tunnel in Complex  Environment Design of Xiamen Rail Transit Line 3（厦门轨道交通3号线复杂环境过海区间隧道设计关键技术）

A sea crossing tunnel is generally large in scale, having a complex site environment, and lack of engineering experience. The success of the project is directly related to the design plan. At present, no metro sea crossing tunnel havd been built in mainland, and the design standard and technology of the sea crossing tunnel are not studied throughly. The key technology of long and large sea crossing metro tunnel design, including construction method selection, cross section design, waterproofing and drainage system design, response to complex environment in sea area, durability design, ventilation and evacuation are analyzd with methods of geological analysis, engineering analogy and comprehensive comparison based on the sea crossing tunnel of Xiamen Rail Transit Line 3. A combination of shield and mining methods is proposed for the geological conditions of different sections. The drainage system of the mining section can be maintained by applying advanced grouting to control displacement. The complex geology of the sea area is considered in the targeted design, including a deep weathering trough, a water rich sand layer, a hard rock and uneven stratum, and the development of solitary rocks. The durability design of the tunnel structure and the limit of the bearing capacity are treated equally to consider safety reserve. The tunnel adopts sectioned longitudinal ventilation and smoke extraction mode, and contains ventilation shafts and civil smoke extraction air shafts on shore to prevent disasters. The conclusions can provide technical support for tunnel scheme decision and reference for similar projects.     

Heat Exhaust Ventilation for Ultra long GIL Tunnel（超长GIL管廊排热通风研究）

The GIL chamber in the utility tunnel under Tanxinpei Road in Wuhan is an ultra long closed structure. Heat exhaust ventilation is the controlling problem in engineering design for the project, especially the heat transfer between the tunnel and the surrounding soil in the long term. A one dimensional model for the GIL chamber is established by using the IDA tunnel simulation software to analyze the short term and long term heat exhaust, respectively. The short term heat exhaust is analyzed for the typical climate of summer/winter/transitional seasons and the long term analysis is carried out under the seasonal changes in 1 year/ 10 years/ 30 years. The short term analysis results indicate that the slope of the utility tunnel and the temperature gradient lead to lower ventilation efficiency in certain areas. The long term analysis results show that the air temperature in the GIL chamber and the wall temperature rise most pronouncedly during the first 5-6 years of operation and remain stable for the remaining time within 30 years. It also is found that around 10%-40% of the heat is released to the surrounding soil. A three dimensional model of the GIL chamber is established using the fluid mechanics based program, OpenFOAM, for 3D simulation. The effects of cables and brackets on the temperature and velocity fields in the chamber are analyzed. The effect of non uniformity of velocity distribution and the stack effect on the temperature distribution in the GIL chamber are revealed. The results can provide some reference for the design and specification revision of heat exhaust ventilation for similar utility tunnels in the future.     

Auto Production and Sales in November, 2000

The accumulated auto production and sales kept rising for both over 10-plus percentage points while the monthly production and sales increased by 9.86% and 9.62% compared with that in October. In November, 184,583 units of automobiles were turned out, 9.34% up over last November. The accumulated production of January ~ November was 1,885,830 units, 13.67% up over the same period of last year. The production of cars popped out among the production of car, bus and truck for the increment of 18.76% and 12.28% respectively over October and last November with the volume of 53,672 units. The     

BRIEF NEWS

Sino-Japanese Conference The second Sino-Japanese Conference on the Development of Automotive Industry was held in Japan during July 4-8, Chinese delegation to the conference was headed by Mr. Zeng Peiyan, vice minister of the State Planning Commossion. Other high level officials from SPC and MMI also joined the meeting. The Chinese delegates introduced to their Japanese counterparts the newly promulgated industrial policy and the development of Chinese automotive industry. The Chinese delegates hold the opinion that the possibilities of Japanese automotive industry in China lay in cooperation in the components area and coopera     

An analysis on the market of upper-medium sector cars and a forecast for the situation in the second half of 2003

1. The whole market maintained high speed growth Among the surge in car sales, the brightest spot is the upper-medium sector, sales of which in the first half of 2003 were 194,000 units, more than sales for the whole of 2001, an increase of 95% year on year, 3 percentage point over the average growth of the industry. The market presented the following 6 characteristics:     

Fully Prefabricated Assembling Technology of Tsinghuayuan  Tunnel in Beijing Zhangjiakou High speed Railway（京张高铁清华园隧道轨下结构预制拼装技术）

Tsinghuayuan Tunnel of Beijing Zhangjiakou High speed Railway is the first fully prefabricated high speed railway tunnel in China. The supporting structure, subrail structure, and subsidiary structure of Tsinghuayuan Tunnel are all prefabricated in the factory. The strength, deformation and stability of subrail structure are analyzed by numerical simulation method; a kind of three block type of subrail prefabricated structure is put forward according to prefabricated assembling technology; and the subrail space is used to ventilate and rescue under the stability condition. The connection between subrail structure and shield segment is the key to fully prefabricated assembling technology. By introducing the grouting technology and construction keys of subrail structure, the stress on subrail structure and shield segment can be balanced. The results can provide reference for similar projects in the future.     

A Challenge Lying Ahead of the Fuel Consumption of Chinese Light Commercial Cars

Over the recent years, along with the expansion ofits auto industry, China has becomeone of the countries in the world where the number of motor vehicles increases mostrapidly. By the end of 2003, its vehicle population totaled 2.421 million (not includingmotorcycles), including 7.71 million cars. The proportion of passenger vehicles hit 51.3percent for the first time in the same year. The Chinese government designated the auto industry as one of its pillars. In the TenthFive-year Plan th…     

Auto Trading Policy should be Aided by more Details

The new policy was issued on Aug 10 by the Ministry of Commerce and took effect on the same day. The Policy consists of 8 chapters including general principle, policy target, sales, used vehicle circulation, parts circulation, vehicle scratch and recollection of scratch, foreign trade. This is the first one in China covering A to Z for the automotive industry. The 49-article Policy guides qualified vehicle suppliers and outlets to stretch out to the world. The central foreign trade fund wi…     

A study on the development strategy of China’s auto parts industry

1. Development trend As an important part of automobile, auto parts are the base of the auto industry. At the age of economic globalization and along with the change of the auto industry, the world auto parts industry is presenting new development trend. First, since the late 80’s and early 90’s, promoted by economic globalization, the world auto industry has fastened restructuring. The number of powerful auto makers is now 12 from 30 in 1980. The restructuring of auto makers has broken the…     

An Analysis of the Luxury Car Market in the first half of 2005

2005 is a critical year in the short history of luxury cars. The good news is the launching of a number of luxury brands, including the Beijing Mercedes project which got the green light from the authorities. In contrast, the policy and external environment have witnessed fundamental changes: rising fuel prices and a new policy against domestic resembling of luxury cars. The first half saw a total of 40,325 luxury cars produced and 40,410 sold. In sharp contrast to the steep drop of upper med…     

Auto makers are preparing for the slow-down of the economy

Export, investment and consumption are considered the three legs of the rapid growth of China’s economy. However, an analysis over the first 5 months shows that all of them are facing difficulties. The global economy, after enduring the fast growth in last year, is slowing down, which has resulted in the retarding of world trade and emerging of trade protectionism. China, which relies heavily on the export over the recent years, is now repeatedly the focus of trade disputes. The over investm…