Study On Construction Scheduling For Unban Rail Transit Plannin Net Work

The rail transportation has the capacity to be big, speed quick, safe, punctual and so on a series of merits, to alleviates the municipal transportation pressure, to guide the urban space development, to adjust the urban land layout, to improve the urban environment quality, and the promotion urbanization advancement may play the tremendous role. Therefore, facing our country urban development's specific stage, studies the rail transportation plan wire the construction succession to have the very vital practical significance.This article first analyzes the world typical city the rail transportation development process, and will unify our country track transport facilities present situation and near future plan, proposed that our country city track transport facilities present existence's subject matter, and to will affect the rail plan wire construction succession the correlation factor to carry on the analysis, based on this from the construction opportunity, the construction scale and the construction order three aspects will conduct the research to the track transport facilities succession's definite method.The rail transportation construction opportunity's determination uses conventional the cost benefit analysis, adopts in the influencing factor the urban population scale and the economic level (each person of average income) two important targets carries on the quantification computation. The construction target is defined as income - population standardization target IPN, in the mean time gap value's IPN target may think that is the suitable time, simultaneously is lower than and is higher than this standard value time selection to consider separately corresponding premature and the excessively late time selection.The track transport facilities scale's determination divides into the start time, the centralism construction period and the consummation time three stages. The start time is mainly through the quality synthetic evaluation system determined that initial period construction scale to be whether reasonable. The centralized construction period increases through the expectation rail transportation proportion with the expectation compact car journey proportion reduces, the rail wire's level, the structure and the combination as well as the urban space shape and the layout structure determine the construction scale, recombination urban economy bearing capacity, makes the suitable adjustment and the optimization. The perfect time is mainly the wire encryption as well as the city territory line construction, the union satellite town or the suburb development special details and the urban developmental strategy, adopts"the passenger flow demand"and"the guidance demand"carries on the estimate.This article determines"the first line, the skeleton wire, the development wire and the auxiliary wire"such rail wire construction order. The rail transportation's first line often is passes through the city large-scale transport hub, the business center and the crowded housing employment center main transportation corridor. The skeleton wire interior line construction successively produces differently the effect is different, we may determine its priority through the benefit maximization principle. Development wire and when auxiliary wire construction should pay attention to TOD and the SOD union, according to passenger flow size and development guidance emergency possible arrangement construction order.