基于测点(线)量测优化布置的地下工程区间智能反分析方法

Interval intelligent back analysis method based on the optimal measured arrangement of observation point(line) in underground engineering

地下工程反分析本质上是一个不确定性问题,区间分析用于不确定性问题的处理,具有简单适用的优点,但区间运算结果易于扩张是其主要缺陷。为此,本文基于地下工程区间有限元优化反演模型,突破传统的反分析模式,综合利用参数的可辨识性及测点(线)布置优化原则、智能算法等研究成果,提出了一种基于测点(线)量测优化布置的地下工程区间智能反分析方法。圆形隧道算例的研究表明,该方法是可行的。

The back analysis is essentially a problem of uncertainty in underground engineering, interval analysis has the advantage of simple application which is used to dealing with the uncertainty, but the main flaw is that the result of the operation is easy to expand. On basis of the interval finite element model, this paper broke the traditional anti-analysis mode and proposed a interval intelligent back analysis method based on the optimal measured arrangement of observation point(line) in underground engineering by use of research achievements about identifiability of inversion parameters, principles of the measured point(line) arrangement and intelligent algorithm. Circular tunnel study examples show that the method is feasible.