深基坑支护方案的模糊决策

Fuzzy Decision of Bracing Scheme of Deep Foundation Pit

深基坑开挖过程中 ,支护方案的选择及支护参数的设计实质是一个多值变量 ,即对同一工程条件可能有多种可行的初步支护方案。本文在建立神经网络基础上 ,采用多级模糊综合评判 ,从中选出最优方案。实例表明 ,本法使用简便 ,受主观因素影响较小 ,是一种快速定量选优的实用方法。

During the procedure of deep foundation excavation,the choice of support schemes and the design of support parameters are essentially the multivariated problems with polysolution,namely,it is possible that there are several feasible initial bracing schemes under same engineering conditions,from which the paper choices relative optimal scheme with Fuzzy synthetical evaluations,based on building of influential factors of neural networks.The instance manifests the method is simple and convenitent to be used Subjective factors have only a little effect on them.They are the practical method of high-speed quantitative optimization.