@article{BienerWemhoffBethke1995, author = {Biener, Ernst and Wemhoff, T. and Bethke, H.}, title = {Stability and settlement problems based on the example of the Blockland landfill in Bremen}, series = {Sardinia 95 : Fifth International Landfill Symposium ; (2 - 6 October 1995, S. Margheritadi Pula - Cagliari, Sardinia, Italy) ; proceedings / coord.: Thomas H. Christensen ... - Bd. 2 : Siting, lining, drainage \& landfill mechanics}, journal = {Sardinia 95 : Fifth International Landfill Symposium ; (2 - 6 October 1995, S. Margheritadi Pula - Cagliari, Sardinia, Italy) ; proceedings / coord.: Thomas H. Christensen ... - Bd. 2 : Siting, lining, drainage \& landfill mechanics}, publisher = {CISA, Environmental Sanitary Engineering Centre}, address = {Cagliari}, pages = {843 -- 853}, year = {1995}, language = {en} } @article{BienerSasseKonertz1993, author = {Biener, Ernst and Sasse, T. and Konertz, K.}, title = {Preparation of mineral sealing materials for landfills by different processing technologies / Sasse, T. ; Biener, E. ; Konertz, K.}, series = {Sardinia 93 : Fourth International Landfill Symposium "Barrier systems, environmental aspects, upgrading and remediation, siting, monofills, effects of waste pretreatment, landfilling in developing countries" ; 11 - 15 October 1993, S. Margherita di Pula (Cagliari), Sardinia, Italy ; proceedings / coord. by Thomas H. Christensen ... - Bd. 1}, journal = {Sardinia 93 : Fourth International Landfill Symposium "Barrier systems, environmental aspects, upgrading and remediation, siting, monofills, effects of waste pretreatment, landfilling in developing countries" ; 11 - 15 October 1993, S. Margherita di Pula (Cagliari), Sardinia, Italy ; proceedings / coord. by Thomas H. Christensen ... - Bd. 1}, publisher = {CISA, Environmental Sanitary Engineering Centre}, address = {Cagliari}, pages = {275 -- 283}, year = {1993}, language = {en} } @article{BienerSasse1988, author = {Biener, Ernst and Sasse, T.}, title = {Experience with new techniques in slurry cutoff wall construction}, series = {ISWA 88, proceedings of the 5th International Solid Wastes Conference : September 11 - 16th, 1988, Copenhagen, Denmark / ed. by Lizzi Andersen ... - Vol. 1 : Oral presentations}, journal = {ISWA 88, proceedings of the 5th International Solid Wastes Conference : September 11 - 16th, 1988, Copenhagen, Denmark / ed. by Lizzi Andersen ... - Vol. 1 : Oral presentations}, publisher = {Acad. Press}, address = {London [u.a.]}, isbn = {0-12-058451-4}, pages = {41 -- 46}, year = {1988}, language = {en} } @article{KirsteinMuellerWaleckiMingersetal.2012, author = {Kirstein, Simon and M{\"u}ller, Karsten and Walecki-Mingers, Mark and Deserno, Thomas M.}, title = {Robust adaptive flow line detection in sewer pipes}, series = {Automation in construction}, journal = {Automation in construction}, number = {21}, publisher = {Elsevier}, address = {Amsterdam}, issn = {1872-7891 (E-Journal) ; 0926-5805 (Print)}, doi = {10.1016/j.autcon.2011.05.009}, pages = {24 -- 31}, year = {2012}, abstract = {As part of a novel approach to automatic sewer inspection, this paper presents a robust algorithm for automatic flow line detection. A large image repository is obtained from about 50,000 m sewers to represent the high variability of real world sewer systems. Automatic image processing combines Canny edge detection, Hough transform for straight lines and cost minimization using Dijkstra's shortest path algorithm. Assuming that flow lines are mostly smoothly connected horizontal structures, piecewise flow line delineation is reduced to a process of selecting adjacent line candidates. Costs are derived from the gap between adjacent candidates and their reliability. A single parameter α enables simple control of the algorithm. The detected flow line may precisely follow the segmented edges (α = 0.0) or minimize gaps at joints (α = 1.0). Both, manual and ground truth-based analysis indicate that α = 0.8 is optimal and independent of the sewer's material. The algorithm forms an essential step to further automation of sewer inspection.}, language = {en} } @article{DoeringKendrickLawson2013, author = {D{\"o}ring, Bernd and Kendrick, C. and Lawson, R. M.}, title = {Thermal capacity of composite floor slabs}, series = {Energy and buildings}, volume = {Vol. 67}, journal = {Energy and buildings}, publisher = {Elsevier}, address = {Amsterdam}, issn = {1872-6178 (E-Journal); 0378-7788 (Print)}, pages = {531 -- 539}, year = {2013}, language = {en} } @article{DoeringRegerKuhnhenneetal.2015, author = {D{\"o}ring, Bernd and Reger, Vitali and Kuhnhenne, Markus and Feldmann, Markus and Kesti, Jyrki and Lawson, Mark and Botti, Andrea}, title = {Steel solutions for enabling zero-energy buildings}, series = {Steel Construction - Design and Research}, volume = {8}, journal = {Steel Construction - Design and Research}, number = {3}, publisher = {Ernst \& Sohn}, address = {Berlin}, issn = {1867-0539}, doi = {10.1002/stco.201510029}, pages = {194 -- 200}, year = {2015}, language = {en} } @article{FellinKingKirschetal.2010, author = {Fellin, Wolfgang and King, Julian and Kirsch, Ansgar and Oberguggenberger, Michael}, title = {Uncertainty modelling and sensitivity analysis of tunnel face stability}, series = {Structural safety}, volume = {32}, journal = {Structural safety}, number = {6}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0167-4730}, doi = {10.1016/j.strusafe.2010.06.001}, pages = {402 -- 410}, year = {2010}, abstract = {This paper proposes an approach to the choice and evaluation of engineering models with the aid of a typical application in geotechnics. An important issue in the construction of shallow tunnels, especially in weak ground conditions, is the tunnel face stability. Various theoretical and numerical models for predicting the necessary support pressure have been put forth in the literature. In this paper, we combine laboratory experiments performed at the University of Innsbruck with current methods of uncertainty and sensitivity analysis for assessing adequacy, predictive power and robustness of the models. The major issues are the handling of the twofold uncertainty of test results and of model predictions as well as the decision about what are the influential input parameters.}, language = {en} } @article{Kirsch2010, author = {Kirsch, Ansgar}, title = {Experimental investigation of the face stability of shallow tunnels in sand}, series = {Acta Geotechnica}, volume = {5}, journal = {Acta Geotechnica}, number = {1}, publisher = {Springer}, address = {Berlin}, issn = {1861-1125}, doi = {10.1007/s11440-010-0110-7}, pages = {43 -- 62}, year = {2010}, abstract = {Various models have been proposed for the prediction of the necessary support pressure at the face of a shallow tunnel. To assess their quality, the collapse of a tunnel face was modelled with small-scale model tests at single gravity. The development of the failure mechanism and the support force at the face in dry sand were investigated. The observed displacement patterns show a negligible influence of overburden on the extent and evolution of the failure zone. The latter is significantly influenced, though, by the initial density of the sand: in dense sand a chimney-wedge-type collapse mechanism developed, which propagated towards the soil surface. Initially, loose sand did not show any discrete collapse mechanism. The necessary support force was neither influenced by the overburden nor the initial density. A comparison with quantitative predictions by several theoretical models showed that the measured necessary support pressure is overestimated by most of the models. Those by Vermeer/Ruse and L{\´e}ca/Dormieux showed the best agreement to the measurements.}, language = {en} } @article{KolymbasFellinKirsch2006, author = {Kolymbas, Dimitrios and Fellin, W. and Kirsch, Ansgar}, title = {Squeezing due to stress relaxation in foliated rock}, series = {International journal for numerical and analytical methods in geomechanics}, volume = {Vol. 30}, journal = {International journal for numerical and analytical methods in geomechanics}, number = {Iss. 13}, issn = {1096-9853 (E-Journal); 0363-9061 (Print)}, doi = {10.1002/nag.530}, pages = {1357 -- 1367}, year = {2006}, language = {en} } @article{BayonValeroGarciaBartualetal.2016, author = {Bayon, Arnau and Valero, Daniel and Garcia-Bartual, Rafael and Vall{\´e}s-Mor{\´a}n, Francisco Jos{\´e} and L{\´o}pez-Jim{\´e}nez, P. Amparo}, title = {Performance assessment of OpenFOAM and FLOW-3D in the numerical modeling of a low Reynolds number hydraulic jump}, series = {Environmental Modelling \& Software}, volume = {80}, journal = {Environmental Modelling \& Software}, publisher = {Elsevier}, address = {Amsterdam}, isbn = {1364-8152}, doi = {10.1016/j.envsoft.2016.02.018}, pages = {322 -- 335}, year = {2016}, abstract = {A comparative performance analysis of the CFD platforms OpenFOAM and FLOW-3D is presented, focusing on a 3D swirling turbulent flow: a steady hydraulic jump at low Reynolds number. Turbulence is treated using RANS approach RNG k-ε. A Volume Of Fluid (VOF) method is used to track the air-water interface, consequently aeration is modeled using an Eulerian-Eulerian approach. Structured meshes of cubic elements are used to discretize the channel geometry. The numerical model accuracy is assessed comparing representative hydraulic jump variables (sequent depth ratio, roller length, mean velocity profiles, velocity decay or free surface profile) to experimental data. The model results are also compared to previous studies to broaden the result validation. Both codes reproduced the phenomenon under study concurring with experimental data, although special care must be taken when swirling flows occur. Both models can be used to reproduce the hydraulic performance of energy dissipation structures at low Reynolds numbers.}, language = {en} }