bluuebunny/crossref_metadata_2025_split huggingface dataset:
Specific factors of the hilly areas of the Getic Subcarpathians of Romania for the determination slip hazard
Authors: MALANCU Teodor , MANEA Sanda 
Published: June 2018

AbstractConsidering the analysis performed upon the natural and antropic factors of the most important values of the Sub‐Carpathian hills in Romania, according to the Romanian Government Decision no.447/200, a study regarding the factors intended to reduce the negative impacts that can generate loss of life and significant material damage, is necessary to be carried out. The landslide hazard maps are very usefull for the identification of the future feasible investments on transport infrastructure in the context of the locally accelerated development. Therefore, detailed maps based on regional research of slopes and geotechnical studies would be highly appreciated. The specificity of the hilly area of the Subcarpathians, which is a hostile enviroment and is constantly changing from geomorphological (for the variation of the relief features and the elements of the earth surface), anthropogenic, geological and hydrogeological point of view, the peculiarity of the hilly area of the Subcarpathians consists of being an hostile and constantly changing environment.
Foundation of 20,000 m3 tanks on soft soils from risk assessment point of view
Authors: PULKO Boštjan , BATTELINO Lilian , LOGAR Janko 
Published: June 2018

AbstractIn mid 1980s, the construction of seven smaller tanks having maximum volume of 7,500 m3 and maximum diameter of 25 m for the storage of liquid goods took place in the Port of Koper on the deposit of 28 m thick soft clayey layer. Ground improvement with geosynthetic encased stone columns and preloading was used (Sovinc, Vogrinčič, 1991). Due to satisfactory performance of these tanks, six new large tanks were first supposed to be built in similar way. Due to time constraints and risks involved with much larger tank sizes (V = 20,000 m3 and D = 48.7 m) in combination with variable ground conditions, these new tanks were finally founded on driven tubular steel piles. The paper will present step‐by‐step decision‐making process from the risk management perspective supported by ground investigations, pile load tests and numerical modelling. Finally, the measured behaviour of the new tanks after first 9 years of operation will be shown and practical experience with maintenance of these tanks and connecting pipelines will be shortly presented.
On the effectiveness of site investigation in regard to project costs – a case study
Authors: FREITAG Peter , MARTAC Eugen , REICHENAUER Thomas 
Published: June 2018

AbstractGeotechnical and environmental investigations for the planning of remediation measures are often reduced to the minimum required by national standards and authorities – or even less. This paper will highlight the positive effects of increased investigation efforts on reduction of total remediation costs at a specific site. The subsoil of this site is partially contaminated with perchloroethene. The site investigation included two campaigns of Membrane Interface Probing (MIP). The results of the MIP investigation were validated by taking depth‐oriented soil and groundwater samples. This high resolution of site characterization aimed to identify the contaminated hot spots as prerequisite for successful site remediation. A conceptual site model containing the spatial distribution of the contamination and the lithology was generated for the area of interest and was continuously updated during the investigation period. Based on this model, the architecture, volume and size of the contamination source zone that has to be treated was estimated with increasing stringency.
Geotechnical assessments of plain terrain fortifications in Albania
Authors: GEGA Mirva , SUKAJ Silvana 
Published: June 2018

AbstractThe research includes work on historical buildings, fortifications and cult monuments. Because of its diverse architectural and historical heritages, Albania offers plenty of research opportunities particularly in the repair of the geotechnical structures. A set of geological and geotechnical conditions will be analysed in order to comprehend conditions of two case studies placed in Peqini region. These are of significant importance according to their construction and for the fact that their closed contour foundations are present from the Romans period (in the Peqini castle) and constructed with limestone material brought from an older object (in the Clock Tower). Combination of type of structure and plain terrain geological characteristics are assessed. The goal is to contribute in the geotechnical assessment and revitalization of the case studies selected as objects with value for the community and for the field of geotechnical maintenance. Ultimately, this fosters a better appreciation of the historical heritage in Albania through the understanding of their geotechnical predictions reliability.
Settlement prediction of gypsum sludge based on different test methods
Authors: MAČEK Matej , SMOLAR Jasna , PETKOVŠEK Ana 
Published: June 2018

AbstractPaper compares the laboratory and filed tests results, obtained at the red gypsum sludge impoundment Za Travnik, permanently covered with water. Tests were carried out in order to predict the long term sludge settlements below the dry filter cake fill above it. A good prediction of settlements is important to prevent water pounding on final vegetation cover. Settlements were calculated based on field tests results and from laboratory oedometer tests with and without creep. Comparison of calculated and measured settlements show that secondary consolidation (creep) plays an important role in settlement forecast.
Ground improvement methods for road construction in Slovakia
Authors: MUŠEC Peter , FRANKOVSKÁ Jana , JANTÁK Viktor 
Published: June 2018

AbstractThe paper summarizes soil improvement methods used during the road and embankments construction in Slovakia. In the areas of fine grained sediments in Slovakia, clay layers present a relatively high risk for the preparation and construction of cuts and embankments, as documented by examples in this paper. The case study is situated on the construction sites on motorway in Slovakia, expressway R2 Ruskovce –Pravotice. In order to illustrate clay improvements, three of the most frequently used methods in Slovakia and case studies on ground improvement are presented. Efficiency of stone columns, vertical drains and soil replacement (stone drainage ribs) based on the results of geotechnical monitoring is analysed for comparable engineering‐geological and hydrogeological conditions.
Stability analysis of “Kukovi” landslide
Authors: ŠPAGO Azra , HADROVIĆ Armin , HAJDUK Ismet , JAZVIN Ena 
Published: June 2018

AbstractThis paper presents conducted stability analysis for landslide „Kukovi”, Bosnia and Herzegovina. As all geological cross sections are formed of rock mass that lies under upper layers of soil cover, analysis have been run by using Hoek Brown failure criterion and Mohr‐Coulomb failure criterion respectively. Data on geotechnical parameters were determined by statistical analysis of results from laboratory experiments, field tests and literature data. Values of safety factor are obtained by deterministic slope stability analysis using characteristic values of parameters from statistical distributions. Sensitivity analysis for safety factors has been completed and Monte‐Carlo probability analysis adopted distribution curves for parameters.
Experimental and numerical analysis to determine the uplift capacity of piles in gravels
Authors: ABAZI Sead , SUSINOV Bojan , GJORGJEVSKI Spasen 
Published: June 2018

AbstractThis paper describes the process of testing and design of tension piles as fundaments of air‐supported structures for sports facilities. Two piles with different ratio between diameter and length are tested on axial static tensile load for designing purposes. The results are later compared with FEM numerical model. The obtained ultimate uplift capacity from site experiments is confirmed with the numerical model. The results from the numerical analysis regarding the shear and normal interface stresses are used to determine the soil‐pile friction angle δ. At the end, artificial neural networks were used to predict the uplift bearing capacity of piles with different geometry and soil conditions.
Methodology for determination of rock durability with special attention to waste rock from metallic mineral deposits
Authors: ANGELOVA Elena , PESHEVSKI Igor , JOVANOVSKI Milorad 
Published: June 2018

AbstractChemical‐mechanical weathering of waste rocks from metallic mineral deposits leads to reduction of their strength and deformability. This is of great importance if there is intention to use these rocks as construction material for large structures such as rock fill dams, high embankments or levees. Thus, determination of rock durability is essential in avoiding disintegration of the structures with time. The paper presents the outcomes from procedure with modification of the slake durability test that was applied to several types of waste rocks from a sulfide copper deposit. In addition, an overview is presented of time‐dependant weathering correlations for soft rocks, and possibility to develop similar correlations for hard rock resistance properties based on this research. Suggested methodology for durability testing of hard rocks is also presented. It is believed that application of such methodology will provide more realistic information about the long‐term weathering behavior of the waste rock construction materials.
Numerical modelling by finite elements for a pile foundation under lateral cyclic action
Authors: BATALI Loretta , DRĂGUŞIN Andrei , POPA Horaţiu 
Published: June 2018

AbstractThe present paper is proposing to make a comparison between numerical results using Finite Element Method and experimental ones, for an isolated pile foundation in sandy soil, submitted to cyclic actions from wave or wind. 3D numerical modelling was performed in CESAR – LCPC software, using Drucker‐Prager constitutive law with kinematic hardening for the soil. The small‐scale centrifuge test results were obtained by IFFSTAR Nantes. The numerical and the experimental results, concerning the pile head displacements were in good agreement.
Variability of overconsolidated soils from Poland in geotechnical practice
Authors: BOGUSZ Witold , WITOWSKI Marcin 
Published: June 2018

AbstractThe advantages of establishing databases of soil parameters are recognized within the geotechnical community. Especially, statistical description of soils is necessary tool for establishing probability distribution functions used in reliability based design framework and in standard deterministic approach of limit state design; previous knowledge, comparable experience, and engineering judgement, all play a major role in the selection process of characteristic values of most essential parameters. This is often done in face of limited amount of data from site investigation. The paper presents preliminary database compilation attempt for some parameters of overconsolidated glacial tills and clays from Poland. Due to a rapid growth of infrastructure and cities, analysis of already gathered data is essential for providing engineers with guidance on the variability of soil conditions, which is most noticeable in the case of fine‐grained overconsolidated strata. Focus is given to parameters obtained from triaxial laboratory tests, including small‐strain shear stiffness obtained from Bender Element Test.
In Demir Kapija, a 25 meters high reinforced earth® wall supports the Corridor X
Authors: BRANCAZ David , LUCAS Eric , TIGOULET Alain , GAPIKJ Irina 
Published: June 2018

AbstractReinforced Earth® structures combine select and controlled granular backfill with tensile reinforcements and a modular facing system. This ideal combination creates a long‐lasting gravity retaining structure. For more than 50 years, it gives solutions to civil engineering actors for infrastructure, mining, hydraulic and protective applications. On the Pan‐European corridor X, close to Demir Kapija, a major retaining structure reaching 25 m height was built, using Reinforced Earth® solution as an alternative to the access viaduct of the Bridge B2.
Reducing the risk of building degradation caused by groundwater table level variations in an area in Bucharest
Authors: BURLACU Catalin , OLINIC Ernest , MANEA Sanda 
Published: June 2018

AbstractIn Bucharest, wastewater is collected through main and secondary collectors, all of them discharging in the wastewater collector channel situated under the Dambovita River floor. Given the modifications of the groundwater table level fallowing the building of a metro line and, therefore, the necessity to reduce the intake of water coming from rain and groundwater infiltrations (conventionally considered clean) at Glina wastewater treatment plant, one of the solutions identified has been to build a drainage system next to the river. In this scenario, a groundwater table level variation would appear, and the study aimed to estimate the influence of the drainage system on the buildings in terms of settlements.
Application of deterministic and probabilistic ‐ SPT based liquefaction assessment triggering models
Authors: CHANEVA J. , BOJADJIEVA J. , SHESHOV Vl. , EDIP K. , KITANOVSKI T. 
Published: June 2018

AbstractThis paper presents an application of the SPT based liquefaction triggering models (both deterministic and probabilistic) proposed by Boulanger and Idriss (2010). Several authors consider deterministic approaches to be beneficial in areas of high seismicity. The procedure for predicting probability of liquefaction however can be alternative tool of analysis that could complement the deterministic procedures by providing information on the relative risk of liquefaction between design alternatives. It is used to estimate the probability of liquefaction for a given design earthquake magnitude and acceleration. Both deterministic and probabilistic approaches were used for a liquefaction susceptible soil profile for different percentage of fines. The location is in Ohrid, as a specific area with high groundwater tables, complex geological conditions and medium level seismicity. The potential of liquefaction is determined for all layers of the soil. The results show that the probabilistic approaches shouldn't be excluded in this assessment and can be more favourable for areas of intermediate seismicity.
Coupled approach in simulation of soil consolidation
Authors: IVANOVSKI D. , SHESHOV Vl. , EDIP K. , BOJADJIEVA J. , KITANOVSKI T. , CHANEVA J. 
Published: June 2018

AbstractThe aim of this paper is to present a mathematical framework and its corresponding coupled finite element discretization for fully saturated porous media. The model is developed as a coupled displacement‐pressure formulation in which the porous medium is composed of a soil skeleton and water in the pores. The considered problem in this paper is the consolidation of a saturated soil layer subjected to uniform pressure at the top. The coupled mathematical model addressed in this work considers both drained and undrained boundary conditions in the consolidation problem. The consequent mathematical model involves equations of mass and momentum balance for the whole system. Interesting outcomes are achieved from the numerical simulation and results are discussed thoroughly.
Strength‐deformability properties of tailing dam sand in large load span and unsaturated conditions
Authors: JOVANOV Zoran , ABAZI Sead , PAPIĆ Br. Jovan , PEŠEVSKI Igor 
Published: June 2018

AbstractFor the needs of determination of properties of sand from tailing dam, huge number of laboratory tests were performed at several high education institutions in R. Macedonia, where special attention was payed to determination of shearing strength. Namely, having in mind that the typical process at tailing dam understands that the fine and saturated sand is freely distributed along the slope, but that it is draining fast due to the permeability, parts of the sand instantly get the unsaturated condition. Moreover, respecting the height of the tailings dams, appropriate vertical loads also need to be considered. Therefore, loads in large span were applied during the direct shear and the oedometer tests where the samples were embedded in different saturated sonditions, as well as the suction was investigated. Those tests and their results are briefly commented.
Impact of unsaturated strength‐deformability properties on stress‐deformation condition and stability of tailing dams
Authors: JOVANOV Zoran , STRAŠESKI A. , PAPIĆ Br. J. , LJUBENKOV I. , SUSINOV B. 
Published: June 2018

AbstractTailing dams are large structures whose downstream slope is made from wet fine sand without applying compaction energy. They are always designed with parameters determined in saturated condition, but since the draining reduces the saturation degree, it favourably influences the behaviour of the dam. Having in mind the dedicated laboratory tests conducted in unsaturated condition, those determined strength and deformability parameters were applied in numerical analysis for the calculation of stress and strain condition and the stability of tailing dam. The results of these calculations are commented below since they contribute to the clarification of the role and influence of partial saturation on the slope stability and deformability of tailing sand.
3D modelling of train‐track interaction at bridge transition
Authors: KOCH Edina , HUDACSEK Péter , SZEPESHÁZI Róbert , KEGYES‐BRASSAI Orsolya 
Published: June 2018

AbstractIn bridge design Finite Element Method is the most commonly used tool for the calculation of stresses and strains in structures. The problem is more complex in case of high speed train infrastructure design due to the strict limitations of differential settlement in the transition zones. The railway transitions experience differential settlements due to differences in track system stiffness, track damping characteristics, foundation type, ballast settlement as a result of fouling and degradation, as well as fill and subgrade settlement. The problems associated with the transition zones require complex analysis. Aim of this study is to enhance our understanding of the dynamic behaviour of the bridge transition and its soil environment. The authors report the first results obtained by the investigation of a 3D numerical model of a bridge transition zone subject to dynamic loads of a structure embedded in soft soil environments using advanced constitutive model.
Preliminary results of numerical modelling of debris flow ‐ case study Leva reka, Serbia
Authors: KRUŠIĆ J. , SAMARDŽIĆ‐PETROVIĆ M. , MARJANOVIĆ M. , ABOLMASOV B. , MILJKOVIĆ S. 
Published: June 2018

AbstractLeva reka debris flow (Kraljevo area, Serbia) was triggered by extreme rainfall in May 2014 in Serbia. A Huge amount of weathered Cretaceous flysch material formed debris dam, over 10m high, and made a lake on Leva reka (about 150m long, and 5m deep). Debris flow appears in an active ravine with the occasional stream flow. The debris flow is about 400m long, 100 wide at widest part, and about 30 m deep in deepest main part. Digital Elevation Model and orthophoto images were obtained by UAV survey in very high resolution as a detailed topographic input model, as well to define recomposition of material after displacement. A numerical modeling was made in RAMMS® software, which is based on Voellmy friction law. Main models, gave information about maximum flow height, velocity, and pressure in different parts.
Reliability of rock parameters determination
Authors: KUVIK Marian , FRANKOVSKÁ Jana , STOLÁRIK Ladislav 
Published: June 2018

AbstractThis paper describes the field test methods used for rock parameters determination. The basic problem of engineering geotechnical investigation is – besides geological condition's description – determination of specific geotechnical parameters of rock and soil on the construction site. The deformation parameters of rock mass may be obtained by execution of in‐situ tests, indirect estimations based on rock classification methods and laboratory testing. The results of a geological investigation are often based only on laboratory testing, which consequently leads to inadequate characteristics of geotechnical parameters of the rock mass. Results of pressuremeter and dilatometer tests for crystalline rocks and their interpretation are presented in the paper. Deformation parameters determined by rock dilatometer testing for geotechnical design of the expressway R2 in Slovakia are analysed. In this paper, simple expressions are derived for estimating the deformation modulus using rock quality designation and degree of faulting.
A case of complex geotechnical conditions for a water treatment facility
Authors: MULABDIĆ Mensur , MINAŽEK Krunoslav , LEKO‐KOS Marija , ORTOLAN Želimir , KALUÐER Jelena , MATIJEVIĆ Jelena 
Published: June 2018

AbstractWaste water treatment facility of Vukovar city with capacity for 42000 inhabitants is planned to be built on Danube right riverbank, downstream the city. Due to a large area required for facility buildings and site topography, a plateau of 40000 m2 and total 270000 m3 needs to be built with a large part laying behind the sand filled embankment in Danube riverbed. Loess deposits near Danube riverbank are vertically rising up to 30 m from water level and a very narrow strip of dry land between river and loess slopes limits the possibilities for positioning the plateau for the facility, hence this kind of spreading bank to the river side was the only possible solution. The complex engineering problem demanded extensive investigation works and a sensitive analysis of stability, settlements and liquefaction susceptibility, as well as a strict and comprehensive control of sand embankment properties. Some of the specific aspects of design solution related to geotechnical analyses of the revetment and the plateau, formed for positioning the facility buildings, are presented in this paper.
Shear and compressibility characteristics of leachate based MSW using geotextile reinforced stone columns
Authors: SHAH Manish , JOSE Jerome , GANDHI Abhay , PRASAD Parmeshwar 
Published: June 2018

AbstractThis study is an attempt to enhance local municipal solid waste (MSW) of Ahmedabad city to be first used as engineering fill material based on its shear characteristics and to understand its compressibility behaviour and pore‐leachate interaction infusion of geotextile reinforced stone columns is carried out through model test set‐up. Focusing on the effect of leachate on compressibility and shear strength parameters, box shear test and consolidation test are performed on the MSW with addition of different concentrations of leachate at 25%, 50%, and 75% of OMC. Further to remediate compressibility issues due to post leachate‐MSW interaction, stone columns will be infused. Load ‐ settlement characteristics of surface submerged MSW by infusing stone column with L/D ratio 3.75 and 2.5 and position of lateral geotextile circular disc at a distance of L/2, L/3 and L/4 respectively from the top is obtained and experimental results are compared with theoretical approach. Overall results strongly recommended to use Pirana MSW as engineered fill material.
Classifying and characterising fine‐grained soils using fall cones
Authors: VARDANEGA Paul J. , O'KELLY Brendan C. , HAIGH Stuart K. , SHIMOBE Satoru 
Published: June 2018

AbstractSoil classification tests (liquid and plastic limits) are the most common tests performed in geotechnical engineering practice. In ‘data poor’ regions that are also vulnerable to natural hazards, they are often the only information engineers have available to assign parameters for geotechnical modelling and assessment purposes. This paper presents a review of some key correlations that rely on these data and summarises some recent research findings regarding the relationship between liquid limits measured using the Casagrande cup and fall‐cone approaches, including the effect of different base hardness for the Casagrande cup device.