The Research of the Construction Time on City Infrastructure Projects

The Research of the Construction Time on City Infrastructure Projects

The project construction time is not sufficiently considered in the decision-making procedure of the extant city infrastructure project all over the world. From the principle to increase benefit from the investment, the paper discusses the influence of construction time on benefit from investment, the condition of the optimal construction time, the method to confirm the optimal construction time, etc., under the increases of market demand, the paper establishes mathematics model between the construction time and the project benefit, and the model involves the project age, the construction time, the capital cost, the market demand, the discount rate and so on. Finally, the paper quantitatively analyzes the influence characteristics and degrees of construction time to the project profits, and the method to determine the optimal construction time of a project under different market demand .To emphasize that, the paper researches on Chinese cases, but, the conclusion put forward has the widespread significance to the time choice on city infrastructure project of other countries.