Modified tuned liquid dampers for seismic protection of buildings considering soil–structure interaction effects

R Kamgar, F Gholami, HR Zarif Sanayei… - Iranian Journal of …, 2020 - Springer
Considering the effect of soil–structure interaction in dynamic analysis of structures can
change their responses. It is generally assumed that the structure is located on a rigid …

3D discrete element method modelling of tunnel construction impact on an adjacent tunnel

L Wu, X Zhang, Z Zhang, W Sun - KSCE Journal of Civil Engineering, 2020 - Springer
Closely-spaced side-by-side mechanized twin tunnels are commonly used in urban metro
transit systems. The aim of this paper was to investigate the influence of tunnel construction …

Calibrating the micromechanical parameters of the PFC2D (3D) models using the improved simulated annealing algorithm

M Wang, P Cao - Mathematical Problems in Engineering, 2017 - Wiley Online Library
PFC2D (3D) is commercial software, which is commonly used to model the crack initiation of
rock and rock‐like materials. For the PFC2D (3D) numerical simulation, a proper set of …

[PDF][PDF] The effect of micro parameters of PFC software on the model calibration

MR Ajamzadeh, V Sarfarazi, H Haeri… - Smart Struct. Syst, 2018 - researchgate.net
One of the methods for investigation of mechanical behavior of materials is numerical
simulation. For simulation, its need to model behavior is close to real condition. PFC is one …

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 …

Calibration of DEM macro and micro parameters via XGBoost method

Z Zhou, S Bai, K Chu, J Li, J Sun, M Wang, Y Sun, M Li… - Granular Matter, 2022 - Springer
To solve the complicated macro and micro parameter calibration problem in the discrete
element method (DEM) simulation of rock mechanics, macro parameter prediction and micro …

Experimental and numerical analysis of deformation behaviour of tunnels under static loading conditions

P Kumar, AK Shrivastava - Sustainable Energy Technologies and …, 2022 - Elsevier
The constant growth of cities has led to a shortage of land in metro areas as a result;
numerous transportation issues must be addressed. The design of underground structures …

Dynamic characteristics of adjacent tunnel and surroundings under the vibration of trains in the first tunnel with different buried depths

L Wu, X Zhang, F Kuang, J Sui, Z Xilong… - Arabian Journal for …, 2021 - Springer
This paper discussed the effect of different buried depth (B) of the twin-tunnels using scale
experimental model and discrete element method (DEM). The diameter (D) of the twin …

Physical Investigation of Deformation Behaviour of Single and Twin Tunnel under Static Loading Condition

P Kumar, AK Shrivastava - Applied Sciences, 2021 - mdpi.com
This paper presents a new testing method for the problems encountered in field testing. To
this end, single-tunnel and twin-tunnel small-scale rock models are prepared in the …

[PDF][PDF] Displacement and deformation of the first tunnel lining during the second tunnel construction

L Wu, X Zhang, Z Zhang, LQ Luo, WC Sun - Civil Engineering Journal, 2019 - core.ac.uk
A three-dimensional twin tunnels scale model was established utilizing the discrete element
method (DEM) with PFC3D. This model aims to investigate the displacement (in horizontal …