对给水管道经济管径求法的思考

Thinking on the Way of Calculating Economic Diameter for Water Supphy Pipe

为弥补给水管网经济管径计算中忽略的资金的时间价值的不足,在一定的约束条件下,采用折现的方法,提出以管网设计期内所有费用折现值之和为目标函数,得出给水管道经济管径的一种新的求法,并以实例加以演示,最后提出选取经济管径的参考意见。

In order to make up the shortage of ignoring the capital time value in the course of calculating economic pipe diameter,taking the equivalent of all cost of the water supply network in it’s design reference period as objective-function by the way of fee-equivalent and presents a new way to calculate economic pipe diameter and provides an example.Finally,the reference advice to select economic diameter is put forward.