地面沉陷双非线性分析

Analysis of Double Nonlinearity for Groundsurface Settlemen

本文用邓肯—张（Duncan－Zhang）模型加几何非线性（Geometricnonlinearity）来分析浅埋隧道新奥法施工引起的地面沉陷。通过几种方法计算结果和实测值的比较，本文分析方法的结果比较接近实测值。

Groundsurface settlement caused by NATM in shallow buried tunnel is,in this paper,analyzed by the method of Duncan-Chang Model+Geometric Nonlinearity. According to the comparision between several calculating results and field measuring value,the result got by the method of this paper is comparatively close to the field measuring value.