设计重现期对雨水管网工程造价的影响分析

Impacts analysis of designed rainwater recurrence interval on rainwater drainage network construction cost

为定量分析设计重现期的提高对雨水管网工程造价的影响,以及对全国各地的不同影响程度,首先从暴雨强度公式出发进行理论推导,计算了随着设计重现期的提高,雨水管网断面尺寸和工程造价提高的理论倍数,然后通过对全国各地暴雨强度公式的统计分析,对不同地区的影响程度进行了探讨,最后通过东北某省会城市一新区规划项目,进行了案例分析。

To analyze the impacts of the increase of designed rainwater recurrence interval on rainwater drainage network construction cost quantitatively and the variance of the impacts in different areas throughout China, this paper made theoretical deduction based on stormwater intensity formula and figured out the increase of intersection size of rainwater pipes and project construction cost with the increase of designed rainwater interval. Through the statistics analysis of stormwater intensity formulas throughout China, the variance of impacts of designed rainwater interval in different sites was studied. Finally, a case study of a plan in a development district in a province capital in Northeast China was carried out.