一、前言钢筋混凝土方向是市政建设中排水工程的主要项目之一。这种方沟承载能力大,整体刚度好,对不同地基的适应性强,一般多用于跨度大于2米、排水量较大的沟道。但这种方向投资比较大,消耗三材也比较多,因此设计经济合理的方沟断面是很重要的问题。为此,对方沟断面进行技术经济分析工作,提供设计参考,是很有必要的。 I. Introduction The direction of reinforced concrete is one of the major projects of drainage works in municipal construction. This square ditch carrying capacity, the overall stiffness is good, adaptable to different foundations, generally more for the span of more than 2 meters, a larger displacement of the channel. However, the investment in this direction is relatively large, and there are also more materials consumed. Therefore, it is a very important issue to design an economically reasonable square channel profile. For this reason, it is necessary to carry out the technical and economic analysis of the other side of the trench to provide a design reference.