Evaluation of the importance of gradually releasing stress around excavation regions in soil media and the effect of liners installation time on tunneling

H Heidarzadeh, R Kamgar - Geotechnical and Geological Engineering, 2020 - Springer
Tunnels are structures which have vital roles in the development of societies. In the
numerical models of underground cavities, such as tunnels, loading due to zone elimination …

Necessity of applying the concept of the steady state on the numerical analyses of excavation issues: laboratory, field and numerical investigations

H Heidarzadeh, R Kamgar - Geomechanics and Geoengineering, 2022 - Taylor & Francis
This research consists of two main parts. First, some laboratory and field tests have been
conducted on a specific soil. Therefore, a series of laboratory and field data have been …

Modeling nanoclay effects on different parameters of a clayey sand

R Kamgar, M Salimi Naghani, H Heidarzadeh… - Modeling Earth Systems …, 2021 - Springer
Nanoparticles can improve soil properties. Nowadays, the tendency to produce
nanomaterials and investment in this field has increased. In this paper, the basic soil …

3D numerical analyses for optimization of deep-mixing columns combined by raft foundations

M Oliaei, H Heidarzadeh, S Mansouri - Indian Geotechnical Journal, 2021 - Springer
In some cases, because of weak soil, the raft cannot provide sufficient bearing capacity. In
these conditions, piles could be applied to enhance the bearing capacity and to reduce the …