All Outputs (39)

An evolutionary-based polynomial regression modeling approach to predicting discharge flow rate under sheet piles (2023)
Journal Article
Asr, A. A., Johari, A., & Javadi, A. A. (2023). An evolutionary-based polynomial regression modeling approach to predicting discharge flow rate under sheet piles. Engineering with Computers, 39(6), 4093-4101. https://doi.org/10.1007/s00366-023-01872-1

The discharge flow rate beneath sheet plies is an essential parameter in designing these water retaining structures. This paper presents a unified framework for modeling and predicting discharge flow rate using an evolutionary-based polynomial regres... Read More about An evolutionary-based polynomial regression modeling approach to predicting discharge flow rate under sheet piles.

Numerical investigation into the effects of geometrical alterations in cut-off walls on seepage through water-retaining structures (2023)
Presentation / Conference
Thomas, A. J., & Asr, A. A. (2023, April). Numerical investigation into the effects of geometrical alterations in cut-off walls on seepage through water-retaining structures. Paper presented at 2023 Annual Conference of the UK Association for Computational Mechanics., University of Warwick

In this paper numerical analysis has been conducted to expand existing research on cut-off walls from previous studies such as [1],[2]. This study is aimed at studying a unique geometric alignment design that accommodates ‘branches’ on either side of... Read More about Numerical investigation into the effects of geometrical alterations in cut-off walls on seepage through water-retaining structures.

Effective stress parameter in unsaturated soils : an evolutionary-based prediction model (2021)
Journal Article
Ahangar Asr, A., & Javadi, A. (2021). Effective stress parameter in unsaturated soils : an evolutionary-based prediction model. Proceedings of the Institution of Civil Engineers. Smart infrastructure and construction, 173(4), 96-105. https://doi.org/10.1680/jsmic.21.00012

Deformations and failures in unsaturated soils are influenced directly by the effective stress calculated using the stress equation affected by the effective stress parameter. A data mining-based approach, the Evolutionary Polynomial Regression (EPR)... Read More about Effective stress parameter in unsaturated soils : an evolutionary-based prediction model.

Numerical Investigation into the effects of cavities on stability of slopes and seepage through earth dams under rapid drawdown condition (2020)
Thesis
Alateya, H. Numerical Investigation into the effects of cavities on stability of slopes and seepage through earth dams under rapid drawdown condition. (Thesis). University of Salford

The stability of dams and natural slopes is a significant and interesting issue and one of the key challenges in the civil engineering field. Cavities forming under earth structures are problematic in the field of geotechnical engineering and may lea... Read More about Numerical Investigation into the effects of cavities on stability of slopes and seepage through earth dams under rapid drawdown condition.

Numerical investigation into the stability of earth dam slopes considering the effects of cavities (2020)
Journal Article
Al-ateya, H., & Ahangar Asr, A. (2020). Numerical investigation into the stability of earth dam slopes considering the effects of cavities. Engineering Computations, 37(4), 1397-1421. https://doi.org/10.1108/EC-03-2019-0101

This research is an attempt to estimate the influence of the presence of cavities on the stability of slopes in earth
dams under rapid drawdown conditions. The aim of the investigation is to study the influence of different
factors, such as the dia... Read More about Numerical investigation into the stability of earth dam slopes considering the effects of cavities.

The joint influence of cavities presence and rapid drawdown condition on discharge rate through earth dams (2019)
Presentation / Conference
Al-Ateya, H., & Ahangar Asr, A. (2019, April). The joint influence of cavities presence and rapid drawdown condition on discharge rate through earth dams. Presented at 26th Annual Conference of the UK Association for Computational Mechanics (UKACM), City University London, UK

Seepage measurement and control is one of the most significant considerations in designing and safety of earth
dams. This numerical study aims to simulate the influence of cavities presence on seepage through earth dams
taking into account rapid dr... Read More about The joint influence of cavities presence and rapid drawdown condition on discharge rate through earth dams.

Stratified slopes, numerical and empirical stability analysis (2018)
Journal Article
Sauffisseau, R., & Ahangar Asr, A. (2018). Stratified slopes, numerical and empirical stability analysis. Proceedings of the ICE - Engineering and Computational Mechanics, 171(4), 174-185. https://doi.org/10.1680/jencm.18.00017

Urbanisation means that many natural slopes in and around cities are often subjected to cuts
resulting in dramatic changes in the geometry of slope faces mostly by increasing slope angle
which could lead to failures with catastrophic consequences.... Read More about Stratified slopes, numerical and empirical stability analysis.

An evolutionary modelling approach to predicting stress-strain behaviour of saturated granular soils (2018)
Journal Article
Ahangar Asr, A., Faramarzi, A., & Javadi, A. (2018). An evolutionary modelling approach to predicting stress-strain behaviour of saturated granular soils. Engineering Computations, 35(8), 2931-2952. https://doi.org/10.1108/EC-01-2018-0025

Purpose: To develop a unified framework for modelling triaxial deviator stress - axial strain and volumetric strain – axial strain behaviour of granular soils with the ability to predict the entire stress paths, incrementally, point by point, in de... Read More about An evolutionary modelling approach to predicting stress-strain behaviour of saturated granular soils.

An evolutionary-based modelling approach for predicting the effective stress parameter in unsaturated soils (2018)
Presentation / Conference
Ahangar Asr, A., & Javadi, A. (2018, August). An evolutionary-based modelling approach for predicting the effective stress parameter in unsaturated soils. Presented at The 7th International Conference on Unsaturated Soils UNSAT2018, Hong Kong, China

Effective stress parameter affects the stress equation and is implemented to calculate the effective stress value which directly influences deformations and failures in unsaturated soils. Evolutionary polynomial regression is a data mining-based tech... Read More about An evolutionary-based modelling approach for predicting the effective stress parameter in unsaturated soils.

Numerical analysis of the influence of cavities on seepage through earth dams (2018)
Presentation / Conference
Alateya, H., & Ahangar Asr, A. (2018, June). Numerical analysis of the influence of cavities on seepage through earth dams. Presented at 6th European Conference on Computational Mechanics (ECCM 6) & 7th European Conference on Computational Fluid Dynamics (ECFD 7), Glasgow, UK

Seepage through earth dams is one of the main reasons of sudden earth dam failures through weakening the earth dam structure and the piping phenomenon. Cavities existence under the hydraulic structures can lead to heavy structural financial damages a... Read More about Numerical analysis of the influence of cavities on seepage through earth dams.

Numerical investigation of unloading effects due to excavation of geometrically non-homogeneous stratified rock masses using finite element analysis (2018)
Presentation / Conference
Sauffisseau, R., & Ahangar Asr, A. (2018, June). Numerical investigation of unloading effects due to excavation of geometrically non-homogeneous stratified rock masses using finite element analysis. Presented at 6th European Conference on Computational Mechanics (ECCM 6) & 7th European Conference on Computational Fluid Dynamics (ECFD 7), Glasgow, UK

With the growth of population in the cities and the lack of land nearby, buildings are now reaching heights and depths (basements) demanding larger and deeper foundations. These excavations cause the unloading of the ground in some directions which c... Read More about Numerical investigation of unloading effects due to excavation of geometrically non-homogeneous stratified rock masses using finite element analysis.

Air losses in compressed air tunneling : a prediction model (2016)
Journal Article
Ahangar Asr, A., & Javadi, A. (2016). Air losses in compressed air tunneling : a prediction model. Proceedings of the ICE - Engineering and Computational Mechanics, 169(3), 140-147. https://doi.org/10.1680/jencm.15.00023

Data (measurements) from a tunnel in Munich, Germany was used to develop and validate a model to predict air loss volumes in the process of compressed air tunnelling. In the implemented case study, compressed air was used as a measure to control the... Read More about Air losses in compressed air tunneling : a prediction model.

An evolutionary approach to modelling effects of chemicals on soils (2016)
Presentation / Conference
Ahangar Asr, A., & Javadi, A. (2016, March). An evolutionary approach to modelling effects of chemicals on soils. Presented at ACME-UK 24th Conference on Computational Mechanics, Cardiff

As part of a study undertaken to assess the impact of high-pH fluid circulation on the shear strength behaviour of a compacted soil with different additives and due to the complexity of the existing constitutive theories, a new approach was used, bas... Read More about An evolutionary approach to modelling effects of chemicals on soils.

Air losses through the tunnel face in compressed air tunneling : a case study (2015)
Presentation / Conference
Ahangar Asr, A., & Javadi, A. (2015, September). Air losses through the tunnel face in compressed air tunneling : a case study. Presented at 16th European Conference on Soil Mechanics and Geotechnical Engineering, Edinburgh, UK

In this study field measurement data from Feldmoching tunnel in Munich were used to develop a model with the capability of predicting the air losses in compressed air tunnelling technique. In this tunnelling project, compressed air was used to contro... Read More about Air losses through the tunnel face in compressed air tunneling : a case study.

An evolutionary approach to modelling the thermo-mechanical behaviour of unsaturated soils (2015)
Journal Article
Ahangar Asr, A., Javadi, A., & Khalili, N. (2015). An evolutionary approach to modelling the thermo-mechanical behaviour of unsaturated soils. International Journal for Numerical and Analytical Methods in Geomechanics, 39(5), 539-557. https://doi.org/10.1002/nag.2323

A new data mining approach is presented for modelling of the stress-strain and volume change behaviour of unsaturated soils considering temperature effects. The proposed approach is based on the evolutionary polynomial regression (EPR), which unlike... Read More about An evolutionary approach to modelling the thermo-mechanical behaviour of unsaturated soils.

A surrogate model for simulation–optimization of aquifer systems subjected to seawater intrusion (2015)
Journal Article
Hussain, M., Javadi, A., Ahangar Asr, A., & Farmani, R. (2015). A surrogate model for simulation–optimization of aquifer systems subjected to seawater intrusion. Journal of Hydrology, 523, 542-554. https://doi.org/10.1016/j.jhydrol.2015.01.079

This study presents the application of Evolutionary Polynomial Regression (EPR) as a pattern recognition system to predicate the behavior of nonlinear and computationally complex aquifer systems subjected to
seawater intrusion (SWI). The developed E... Read More about A surrogate model for simulation–optimization of aquifer systems subjected to seawater intrusion.

A new evolutionary approach to geotechnical and geo-environmental modelling (2015)
Book Chapter
Hussain, M., Ahangar Asr, A., Chen, Y., & Javadi, A. (2015). A new evolutionary approach to geotechnical and geo-environmental modelling. In A. Gandomi Conor Ryan, A. Alavi, & R. Conor (Eds.), Handbook of Genetic Programming Applications (483-499). Springer International Publishing. https://doi.org/10.1007/978-3-319-20883-1_19

In many cases, models based on certain laws of physics can be developed to describe the behaviour of physical systems. However, in case of more complex phenomena with less known or understood contributing parameters or variables the physics-based mod... Read More about A new evolutionary approach to geotechnical and geo-environmental modelling.

Lateral load bearing capacity modelling of piles in cohesive soils in undrained conditions; an intelligent evolutionary approach (2014)
Journal Article
Ahangar Asr, A., Javadi, A., Johari, A., & Chen, Y. (2014). Lateral load bearing capacity modelling of piles in cohesive soils in undrained conditions; an intelligent evolutionary approach. Applied Soft Computing, 24, 822-828. https://doi.org/10.1016/j.asoc.2014.07.027

The complex behaviour of fine-grained materials in relation with structural elements has received noticeable attention from geotechnical engineers and designers in recent decades. In this research work an evolutionary approach is presented to create... Read More about Lateral load bearing capacity modelling of piles in cohesive soils in undrained conditions; an intelligent evolutionary approach.

Modeling the thermo-mechanical triaxial shearing behavior of unsaturated soils using EPR (2014)
Presentation / Conference
Ahangar Asr, A., Javadi, A., & Khalili, N. (2014, July). Modeling the thermo-mechanical triaxial shearing behavior of unsaturated soils using EPR. Presented at International Conference on Unsaturated Soils: Research & Applications UNSAT2014, Sydney, Australia

The proposed approach for modeling the thermo-mechanical of behavior of unsaturated soils is based on the evolutionary polynomial regression (EPR), which generates a transparent and structured representation of the behavior of systems directly from r... Read More about Modeling the thermo-mechanical triaxial shearing behavior of unsaturated soils using EPR.

Lateral load bearing capacity model for piles in cohesive soils (2014)
Book Chapter
Ahangar Asr, A., Javadi, A., Johari, A., & Chen, Y. (2014). Lateral load bearing capacity model for piles in cohesive soils. In A. Javadi, & M. Hussain (Eds.), Proceedings of the 22nd UK National Conference of the Association for Computational Mechanics in Engineering (264-267). University of Exeter

In this research work an evolutionary approach is proposed to develop a structured polynomial model for predicting the lateral load bearing capacity of piles in undrained conditions. The proposed polynomial regression technique is an evolutionary dat... Read More about Lateral load bearing capacity model for piles in cohesive soils.