A5061269359- Geotechnical Engineering and Soil Mechanics
- Geotechnical Engineering and Underground Structures
- Geotechnical Engineering and Soil Stabilization
- Soil and Unsaturated Flow
- Civil and Structural Engineering Research
- Geotechnical Engineering and Analysis
- Landslides and related hazards
- Spacecraft and Cryogenic Technologies
- Rock Mechanics and Modeling
- Engineering and Materials Science Studies
- 3D Modeling in Geospatial Applications
- Wave and Wind Energy Systems
- Geotechnical and construction materials studies
- Tree Root and Stability Studies
- Physics and Engineering Research Articles
- Seismic Performance and Analysis
- Advanced ceramic materials synthesis
- Dam Engineering and Safety
- Structural Health Monitoring Techniques
- Water Systems and Optimization
- Structural Engineering and Vibration Analysis
- Building materials and conservation
- Landfill Environmental Impact Studies
- Tunneling and Rock Mechanics
- Mechanical stress and fatigue analysis
Technical University of Darmstadt
2019-2024
Karlsruhe Institute of Technology
2011-2016
Sozialversicherung für Landwirtschaft, Forsten und Gartenbau
2014
The performance of three advanced constitutive models has been evaluated based on element tests and a comparative study the simulation vibratory pile driving in saturated sand. inspected are Sanisand model Hypoplasticity with Intergranular Strain (Hypo+IGS) as well Anisotropy (Hypo+ISA) extension. is first by used for parameter calibration sand tests. then applied test. penetration, force, pore water pressure development incremental displacement vicinity tip compared to measurements...
Abstract This paper presents an approach for the automatic parameter calibration (AC) of a hypoplastic constitutive soil model. The software developed in this work simplifies calibration, reduces subjective “human” factor on result and lowers entry hurdle use performance was demonstrated by comparing automatically calibrated sets two sands their related simulations underlying experimental data with using reference sets. first set classical way, "by hand", second AC tool ExCalibre. Two...
Climate change is already being felt in Europe, unequivocally affecting the regions’ geo-structures. Concern over this rising, as reflected increasing number of studies on subject. However, majority these focused only slopes and a limited geographical scope. In paper, we attempted to provide broader picture potential climate impacts geo-structures Europe by gathering collective view geo-engineers geo-scientists several countries, considering different geo-structure types. We also...
A critical investigation of three constitutive models for clay by means analyses a sophisticated laboratory testing programme and centrifuge tests on monopiles in subjected to (cyclic) lateral loading is presented. Constitutive varying complexity – namely, the basic modified Cam Clay model, hypoplastic model with intergranular strain (known as hypoplasticity model) more recently proposed anisotropic visco-intergranular anisotropy (AVISA) are considered. From simulations monotonic it...
Tensile strength is a key parameter governing tensile cracking and subsequent failure of soil or rock mass. Existing methods for measuring are mainly designed hard materials come with inherent problems. As such, they continuously being adapted improved by the scientific community. In line this effort, we recently developed two new test application to weak rocks, namely, inner hole fracturing (IHFT) horizontal compression (HCT). study, compared performance these newly three most commonly used...
Abstract Im Zuge des Ausbaus erneuerbarer Energien entstehen in der Nord‐ und Ostsee Parks aus Offshore‐Windenergieanlagen, kurz OWEA. Die Gründung dieser OWEA erfolgt häufig mit großen Einzelpfählen, den sogenannten Monopiles. Infolge zyklischen Belastung Wind Wellen findet im Baugrund eine Verformungsakkumulation statt, welche zu bleibenden Schiefstellungen Monopiles führen kann. Für die Prognose nichtlinearen Langzeitverformungsverhaltens OWEA‐Monopilegründungen wurden Vergangenheit...
Abstract Im Zuge des Ausbaus erneuerbarer Energien entstehen in der Nord‐ und Ostsee Parks aus Offshore‐Windenergieanlagen, kurz OWEA. Die Gründung dieser OWEA erfolgt häufig mit großen Einzelpfählen, den sogenannten Monopiles. Infolge zyklischen Belastung Wind Wellen findet im Baugrund eine Verformungsakkumulation statt, welche zu bleibenden Schiefstellungen Monopiles führen kann. Für die Prognose nichtlinearen Langzeitverformungen wurden Vergangenheit verschiedene Ansätze vorgeschlagen....
Abstract Der vorliegende Beitrag fasst langjährige experimentelle und numerische Arbeiten am Institut für Bodenmechanik Felsmechanik (IBF) des Karlsruher Instituts Technologie (KIT) zusammen, mit denen das Ziel verfolgt wurde, hochzyklische Akkumulationsmodell von Niemunis et al. (2005) Sand zu validieren. Zunächst wird die zutreffende Wiedergabe der Ergebnisse dränierter zyklischer Triaxialversuche durch demonstriert. Anschließend werden Finite‐Elemente‐Nachrechnungen Modellversuchen an...
Abstract Tensile strength plays a crucial role in many engineering activities involving soils and soft rocks. Currently, several methods for tensile determination exist, the most common of which include direct tension method, Brazilian test, ring axial fracturing bending hydraulic test. However, outstanding problems associated with these methods, e.g., undesirable eccentric forces damage specimen ends, significantly affect obtained values. To overcome problems, we propose an alternative test...
The paper presents three engineer-oriented models based on the high-cycle accumulation (HCA) model of Niemunis et al. (2005), dedicated to prediction long-term deformations offshore wind power plant (OWPP) foundations caused by and wave action. A sublayering for shallow under vertical cyclic loading two different approaches (a a stiffness-degradation model) monopile subjected horizontal are presented. results these compared solution from 2-D or 3-D finite element simulations with original...
Abstract Gründungen von Offshore‐Windenergieanlagen sind im Laufe ihre Nutzungsdauer vielen Millionen Lastwechseln ausgesetzt. Diese Wechselbeanspruchung kann zu Setzungen und Verdrehungen der Anlage führen, die Gebrauchstauglichkeit beeinträchtigen. Das Verhalten Flachgründungen bei solchen Beanspruchungen wurde bisher allerdings nur wenig erforscht. Daher wurden zahlreiche experimentelle Untersuchungen an einem kleinmaßstäblichen Flachfundament unter horizontaler zyklischer Belastung...
Tensile strength is an important parameter in many engineering applications. In loess slopes, for instance, it governs the development and propagation of tension cracks that usually ultimately lead to crack–sliding toppling failures, which are among most common modes slope failure Loess Plateau China. Reliable measurement tensile geomaterial therefore a necessity. Commonly used methods have limitations shortcomings, become magnified when dealing with soil soft rock. This study developed new...