A Simple Elastoplastic Model for Normally and Over Consolidated Soils with Unified Material Parameters

Classification and characteristics of soil arching structures in pile-supported embankments

Effect of buried depth on seismic response of rectangular underground structures considering the influence of ground loss

To investigate the realistic ground behavior during tunneling, a new device has been developed. With the new device, model tests of tunnel excavation considering an existing tunnel and an existing building were carried out. Non-linear finite element analyses corresponding to the model tests were also conducted using FEMtij-2D software where an elastoplastic subloading t
 ij
 model was used to describe the mechanical behavior of soil. Earth pressure distribution around the tunnels and ground movements during tunnel excavation depend on the distance and position between the twin tunnels. There is a significant effect of tunneling on the existing foundation of building even in the case where the tunnel is constructed in deep underground. The numerical analyses capture well the results of the model tests.

Tomoki Kurimoto

Papers

Influence of surface loads and construction sequence on ground response due to tunnelling