Abstract: In order to meet the needs of the character of rock and soil, the cost and design, this paper provide a comparatively optimum plan in process of reinforcing soft foundation. The process includes three steps. First, use heavy tamper to ram the soft foundation, then fill the pit with construction waste, finally ham it. The plan is chosen by the theory and model of fuzzy optimization and it achieves good economic and social benefit. Also it is very helpful to guide the engineering practice.

Key words: construction waste, theory and model of fuzzy optimization, soft foundation, the optimum plan

摘要： 为了寻求在一定岩性、费用和满足设计要求条件下,利用重夯夯击软土地基、在夯击坑中填充建筑垃圾、再进行夯实这一加固过程的相对最佳方案,本文提出用模糊优选理论与模型进行方案的选择,不仅提供了在某一岩性下加固软土地基的最佳方案,而且利用建筑垃圾加固软土地基也取得了良好的经济效益和社会效益,同时为指导工程实践具有一定的意义.

关键词: 建筑垃圾, 模糊优选, 软土地基, 最佳方案