TY  - JOUR
A1  - Abrahamczyk, Lars
A1  - Uzair, Aanis
T1  - On the use of climate models for estimating the non-stationary characteristic values of climatic actions in civil engineering practice
JF  - Frontiers in Built Environment
N2  - The characteristic values of climatic actions in current structural design codes are based on a specified probability of exceedance during the design working life of a structure. These values are traditionally determined from the past observation data under a stationary climate assumption. However, this assumption becomes invalid in the context of climate change, where the frequency and intensity of climatic extremes varies with respect to time. This paper presents a methodology to calculate the non-stationary characteristic values using state of the art climate model projections. The non-stationary characteristic values are calculated in compliance with the requirements of structural design codes by forming quasi-stationary windows of the entire bias-corrected climate model data. Three approaches for the calculation of non-stationary characteristic values considering the design working life of a structure are compared and their consequences on exceedance probability are discussed.
KW  - Klimaänderung
KW  - Bauwerk
KW  - climate change
KW  - climate models
KW  - extreme value analysis
KW  - characteristic value
KW  - OA-Publikationsfonds2023
Y1  - 2023
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20230524-63751
UR  - https://www.frontiersin.org/articles/10.3389/fbuil.2023.1108328/full
VL  - 2023
IS  - volume 9, article 1108328
SP  - 1
EP  - 9
PB  - Frontier Media
CY  - Lausanne
ER  - 
TY  - JOUR
A1  - Semar, Olivier
A1  - Schönhardt, Matthias
A1  - Witt, Karl Josef
T1  - Climatic induced changes of radiological and chemical properties in an uranium tailing deposit – Equipment and first results -
N2  - Monitoring systems usually used to control tailings, primarily pore water pressure gages and observation wells, are not self evidently representative for mechanical considerations. Therefore an effective risk assessment and risk management is necessary to get additional information to determine indicators for critical situations. Several tailings observations showed an alteration in chemical and radiological parameters during rising saturation induced by climatic changes. These parameters are appropriate to stress indices. A systematically research on correlations between changes in stress indices and the phreatic surface is part of the research activities of the Bauhaus University in Weimar. The contribution presents the principle of this kind of monitoring, the soil mechanical background, details of the equipment and first results.
KW  - Monitoring
KW  - Klimaänderung
KW  - uranium tailing deposit
KW  - monitoring
KW  - radiological and chemical properties
Y1  - 2005
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20111215-8146
ER  -