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Research project (§ 26 & § 27)
Duration : 2022-01-01 - 2023-12-31

In this research project, a 3D grain-scale continuum-discontinuum hierarchical multiscale computational framework is proposed to improve the deep understanding of compaction banding formations in the sedimentary porous rocks that are of strong interest and of major challenge in the modern geomechanics. The proposed grain-scale continuum-discontinuum multiscale numerical framework for porous geological media consists of three levels including FEM meshes at macro-scale, DEM grains at meso-scale and hypoplastic peridynamic points at micro-scale. Furthermore, the region partitioning search algorithm and CPU-GPU heterogeneous computing architecture both contribute to improvement of computational efficiency to construct an open-source 3D computational platform that is suitable to simulate large-scale geological and geotechnical problems. To systematically investigate the localized failure mechanism of compaction bands in porous geological media at laboratory and field scales, one laboratory-scale and one field-scale numerical models are simulated by 3D computational platform. The influencing factors of boundary conditions, stress fields, geomaterials heterogeneity, nonlocal characteristic length, granular shapes, etc. on the localization failure processes of compaction bands will be summarized and analyzed. Sequentially, effects of microstructural mechanism including pore collapse, grain debonding, intra-granular damage and grain crushing on the nucleation and propagation of compaction bands during the localized failure processes. Furthermore, localized failure mechanism of the geological tectonic phenomena, i.e., coexistence of pure compaction bands and shear enhanced bands, will be numerical explored .
Research project (§ 26 & § 27)
Duration : 2022-05-01 - 2025-04-30

Within the framework of the Protection Forest Centre Traunkirchen at the Forest Campus Austria, there is a cooperation agreement between the four partners BMLRT/​Dep. III/4 — Torrent and Avalanche Control and Protection Forest, Österreichische Bundesforste AG, Austrian Research Centre for Forests and the University of Natural Resources and Applied Life Sciences, Vienna — with the primary objective of promoting a joint protection forest policy in Austria. One of the objectives of the work plan of the Protection Forest Centre Traunkirchen is to establish a model catchment in the Rindbach basin near Ebensee (Upper Austria). This torrential-model catchment is to serve in the long term (>30 years) to convey the geological, hydrological, hydraulic, forestry and construction interrelationships under natural conditions, as a natural laboratory and as a training area for practical training courses. In the course of the submitted project MEZG-Rindbach, an interdisciplinary team of scientists will collect basic data which, in the context of integral natural hazard management, will record the relationships between natural hazard processes, vegetation condition and dynamics, site conditions (soil, geomorphology, geology, climate) and the management of (protective) forests. In addition to the provision of all collected data and their meta-information, which serve as a basis for subsequent analyses or re-surveys, another aim of the three-year project is to present ​“best-practise” models or simulations of the above-mentioned interrelationships.
Research project (§ 26 & § 27)
Duration : 2022-03-01 - 2025-02-28

INITIAL SITUATION: Climate change threatens urban quality of life. Cities of the future need innovativeurban greening technologies in order to maintain temperature comfort for urban residents, to reduce heat island effects and to buffer rainwater peaks during heavy rain events. Newly constructed buildings havethe least leverage effect for such measures, as most of the buildings have already been built.Therefore,it’s clear: greening measures have to be taken on existing buildings! TASK & OBJECTIVES: The ESSBAR project takes up this problem and essential objectives of the tender and aims to demonstrate an affordable, resource-saving and innovative greeningsolution with edible plants on vertical surfaces of existing buildings that focuses on people's needs for green open space. SOLUTION CONCEPT: ESSBAR (German for: Edible balcony gardensfor retrofit) offers an innovative solution concept for the greening of existing buildings by creating new outdoor spaces by retrofitting balconies to existingbuildings. In addition, innovative vertical garden systems (for vegetables, herbs etc.) are integrated into these balconies. These climate-effective and edible systems supplied with rainwater from a rainwater management system represent a completely new option when it comes to makingexisting buildingsgreener. CHALLENGES & INNOVATION CONTENT: The implementation of this concept requires a complex system integration of components for the construction ofbalconies, vertical gardeningsystems and rainwater utilization solutions. The desired high modularity of balconies and greening solutions increases the interface complexity and requires new approaches and high development costs. The residents as decision-makers and future users must be integrated into the process in the best possible way from day one. They are one of the decisive factors for the success of the project. The ESSBAR project addresses the tender focus 3: "Innovative urban greening technologies" of the 8th tender "City of the Future" and specifically the implementation of an innovative implementation project using the example of a real demo object (Karmarschgasse 59-61, 1100 Vienna) of the Vienna based company Sozialbau AG. With the planned innovative solution, climate change adaptation will be implemented in several ways: on the one hand bymeans of a cooling effect (shading, evaporation, reduction of urban heat islands, improvement of the microclimate) and on the other hand by buffering heavy rain events (water storage, rainwater management).The focus is clearly on increasing thebiodiversity of the city andquality of lifeand the well-being of city inhabitants. The vertical gardening technology used in the project specializes in edible plants and thus makes a valuable contribution to the self-sufficiency of cities and the health of their residents.

Supervised Theses and Dissertations