Andras Mahler

Andras Mahler
Budapest University of Technology and Economics · Department of Engineering Geology and Geotechnics

PhD

About

25
Publications
14,763
Reads
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62
Citations
Additional affiliations
January 2001 - present
Budapest University of Technology and Economics
Position
  • Professor (Associate)

Publications

Publications (25)
Conference Paper
Full-text available
Due to the construction of underground structures and hazardous waste storages, understanding and modelling of water flow through concrete has become a major topic for life-span analyses. The water retention curve (WRC) is an essential unsaturated soil function, which can be determined not only for soil samples, but also for other porous media. Thi...
Article
Vulnerability assessment of structures is a vitally important topic among earthquake engineering researchers. Generally, their primary focus is on the seismic performance of buildings. Less attention is paid to geotechnical structures, even though information about the performance of these structures (e.g. road embankments, levees, cuts) during an...
Article
The seismicity of Hungary can be considered moderately active, nevertheless contemporary reports from the past approx. 350 years documented surface manifestations of liquefaction occurrences. The last such earthquake was the 1956 Dunaharaszti ground motion, for which the location of two liquefied sites could be identified approx. 60 years after the...
Conference Paper
Due to the construction of underground structures and hazardous waste storages, understanding and modelling of seepage in concrete has become an important issue in life-span analyses. This study deals with the estimation of unsaturated permeability function for different concrete mixtures using the theory of water retention curve. The WRC is an ess...
Article
en This article presents the results of in‐situ and triaxial testing of tertiary soils (Pannonian sand and Oligocene clay) performed for two major Hungarian projects. The shear strength of these formations varies greatly. Just interpreting the shear strength of tertiary soils poses a number of questions, which definitely exceeds the scope of existi...
Article
Full-text available
Permeability coefficient is the most significant soil parameter in seepage calculations. It has been recognized that permeability of granular soils is strongly related to the grain size, thus numerous empirical correlations have been developed to estimate permeability using its grain size characteristics. In this study the empirical correlations pr...
Article
Full-text available
Due to the construction of underground structures and hazardous waste storages, understanding and modelling of seepage in concrete has become an important issue in life-span analyses. The theories and calculation methods of unsaturated soil mechanics provide an opportunity to analyze water flow in other types of porous media (e.g. concrete) as well...
Conference Paper
Full-text available
Due to the construction of underground structures and hazardous waste storages, understanding and modelling of water flow through concrete has become a major topic for life-span analyses. The water re-tention curve is an essential unsaturated soil function, which can be determined not only for soil samples, but also for other porous media. This stu...
Article
Full-text available
This article is not available for publication.
Article
The volumetric behaviour of compacted unsaturated soils is particularly complex due to the co-existence of three different phases: solid, liquid and air. Matric suction has been perceived as a significant influence on the volumetric behaviour of unsaturated soils and has been used as one of the constitutive variables for most the constitutive model...
Research
Numerous methods exist to determine the liquefaction potential of a site due to earthquake, from which the stress-based empirical methods are the most commonly used in practice. Despite of being widespread , their shortcomings have given way to the evolution of strain-based and energy-based methods. Unlike strain-and stress-based methods the benefi...
Article
Full-text available
Design and modelling of raft foundations and selecting the value of coefficient of vertical subgrade reaction are still actively discussed topics in geotechnical and structural engineering. In everyday practice, soil–structure interaction is mostly taken into account by using the theory of ‘beam on elastic foundation’, in which the soil is substitu...
Article
Full-text available
Numerous methods exist to determine the liquefaction potential of a site due to earthquake, from which the stress-based empirical methods are the most commonly used in practice. Despite of their widespread use, their shortcomings have given way to the evolution of strain and energy-based methods. Their benefits make them a very promising alternativ...
Article
Full-text available
The behavior of deep excavation’s retaining structures may become rather complex near the corners. The vicinity of concave corners is an especially problematic zone, and causes numerous problems in everyday practice. Conventional 2D analyses considering axisymmetric or plane strain conditions cannot be used in such cases due the spatial nature of t...
Article
Full-text available
In case of some nuclear power plants constructed at the soft soil sites, liquefaction should be analysed as beyond design basis hazard. The aim of the analysis is to define the postevent condition of the plant, definition of plant vulnerabilities, and identification of the necessary measures for accident management. In the paper, the methodology of...
Conference Paper
Full-text available
Coefficient of permeability is known as the most variable soil property Its value can vary over an order of magnitude even in case of relatively homogenous layers. So determining this value is a complicated, complex engineering task. There is a vast number of laboratory and in situ tests to determine the permeability coefficient. Each method has it...
Conference Paper
Full-text available
In year 2005 sixty-six laboratories took part in the round robin test, almost all the laboratories working in the country. Laboratories has analysed the required parameters of artificially produced (or eventually natural) soil samples. The main goal is to get answers to this questions: what is the degree of homogeneity of the physical charactherist...
Article
Full-text available
Hungarian experience about the correlation of CPT and DPH results is summarized. A historical review of CPT-DPH and CPT-SPT correlations is presented, and the reliability of the published CPT-DPH correlations is analyzed using recent data from Hungarian geotechnical practice. Based on these data the paper defines soil types where reliable correlati...
Conference Paper
Full-text available
This study summarizes the Hungarian experiences related to correlation of CPT and DPH results. A historical review of CPT-DPH and CPT-SPT correlations is presented, and the reliability of the published CPT-DPH correlations is analyzed using recent data from Hungarian geotechnical practice. Based on these data the paper proposes formulas describing...
Conference Paper
Full-text available
Modern methods of pile design often make extensive use of " in situ " test data. Different prediction methods were used to evaluate the behaviour of 20 full-scale test piles. The pile load tests were performed on Franki piles in various soil conditions. The predicted behaviours of the piles are discussed and compared with the results of the pile lo...
Article
Full-text available
Modern methods of pile design often make extensive use of 'in situ' test data. Different pile capacity prediction methods were used to evaluate the axial capacity of 13 full-scale test piles. The pile load tests were performed on CFA piles in various soil conditions. The predicted behaviours of the piles are discussed and compared with the results...

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Projects (2)
Project
Aim of the research is to take into account the spatial effects and/or effect of engineering structures on the seismic site response.