TY  - CONF
A1  - Michel, Philipp
A1  - Rosin, Julia
A1  - Butenweg, Christoph
A1  - Klinkel, Sven
T1  - Soil-dependent earthquake spectra in the analysis of liquid-storage-tanks on compliant soil
T2  - Seismic design of industrial facilities 2020
N2  - A further development of the Added-Mass-Method allows the combined representation of the effects of both soil-structure-interaction and fluid-structure interaction on a liquid-filled-tank in one model. This results in a practical method for describing the dynamic fluid pressure on the tank shell during joint movement. The fluid pressure is calculated on the basis of the tank's eigenform and the earthquake acceleration and represented by additional masses on the shell. The bearing on compliant ground is represented by replacement springs, which are calculated dependent on the local soil composition. The influence of the shear modulus of the compliant soil is clearly visible in the pressure curves and the stress distribution in the shell. The acceleration spectra are also dependent on soil stiffness. According to Eurocode-8 the acceleration spectra are determined for fixed soil-classes, instead of calculating the accelerations for each site in direct dependence on the soil composition. This leads to unrealistic sudden changes in the system's response. Therefore, earthquake spectra are calculated for different soil models in direct dependence of the shear modulus. Thus, both the acceleration spectra and the replacement springs match the soil composition. This enables a reasonable and consistent calculation of the system response for the actual conditions at each site.
Y1  - 2021
UR  - https://opus.bibliothek.fh-aachen.de/opus4/frontdoor/index/index/docId/9461
SN  - 978-3-86359-729-0
N1  - 2nd International Conference on Seismic Design of Industrial Facilities (Aachen, Germany, March 4-5, 2020)
SP  - 245
EP  - 254
PB  - Apprimus Verlag
CY  - Aachen
ER  -