STUDY ON THE LAW OF GROUND STRESS DISTURBANCE INDUCED BY SHIELD CONSTRUCTION IN DEEP SOFT SOIL LAYER
In order to study the influence of ultra-soft soil layer disturbance on shield tunneling process,a subroutine was written in PLAXIS 3D,and a three-dimensional finite element model of shield tunneling was es-tablished,and a three-dimensional finite element model was established for shield tunneling.Using the structural strength parameter in the model as an evaluation index,a method for evaluating soil disturbance caused by shield tunneling is established.Taking a tunnel as an example,the disturbance of soil mass in the process of shield tunnel-ing is analyzed.
large diameter shieldultra-soft soildisturbance degree
NETL
NSTL
万方数据
