TY  - CHAP
A1  - Rosin, J.
A1  - Mykoniou, K.
A1  - Butenweg, Christoph
T1  - Analysis Of Base Isolated Liquid Storage Tanks With 3D Fsi-Analysis As Well As Simplified Approaches
T2  - 16th World Conference on Earthquake Engineering, 16WCEE 2017 Santiago Chile, January 9th to 13th 2017
N2  - Tanks are preferably designed, for cost-saving reasons, as circular, cylindrical, thin-walled shells. In case of seismic excitation, these constructions are highly vulnerable to stability failures. An earthquake-resistant design of rigidly supported tanks for high seismic loading demands, however, uneconomic wall thicknesses. A cost-effective alternative can be provided by base isolation systems. In this paper, a simplified seismic design procedure for base isolated tanks is introduced, by appropriately modifying the standard mechanical model for flexible, rigidly supported tanks. The non-linear behavior of conventional base isolation systems becomes an integral part of a proposed simplified process, which enables
the assessment of the reduced hydrodynamic forces acting on the tank walls and the corresponding stress distribution. The impulsive and convective actions of the liquid are taken into account. The validity of this approach is evaluated by
employing a non-linear fluid-structure interaction algorithm of finite element method. Special focus is placed on the boundary conditions imposed from the base isolation and the resulting hydrodynamic pressures. Both horizontal and vertical
component of ground motion are considered in order to study the principal effects of the base isolation on the pressure distribution of the tank walls. The induced rocking effects associated with elastomeric bearings are discussed. The results
manifest that base isolated tanks can be designed for seismic loads by means of the proposed procedure with sufficient accuracy, allowing to dispense with numerically expensive techniques.
KW  - liquid storage tank
KW  - seismic isolation
KW  - elastomeric bearing
KW  - friction pendulum bearing
KW  - simplified approach
Y1  - 2017
N1  - Paper No 2246
SP  - 1
EP  - 14
PB  - Chilean Association on Seismology and Earthquake Engineering (ACHISINA)
ER  - 
TY  - CHAP
A1  - Kubalski, T.
A1  - Butenweg, Christoph
A1  - Marinković, Marko
A1  - Klinkel, S.
T1  - Investigation Of The Seismic Behaviour Of Infill Masonry Using Numerical Modelling Approaches
T2  - 16th World Conference on Earthquake Engineering, 16WCEE 2017 Santiago Chile, January 9th to 13th 2017
N2  - Masonry is a widely spread construction type which is used all over the world for different types of structures. Due to its simple and cheap construction, it is used as non-structural as well as structural element. In frame structures, such as
reinforced concrete frames, masonry may be used as infill. While the bare frame itself is able to carry the loads when it comes to seismic events, the infilled frame is not able to warp freely due to the constrained movement. This restraint results in a complex interaction between the infill and the surrounding frame, which may lead to severe damage to the infill as well as the surrounding frame. The interaction is studied in different projects and effective approaches for the description of the behavior are still lacking. Experimental programs are usually quite expensive, while numerical models, once validated, do offer an efficient approach for the investigation of the interaction when horizontally loaded. In order to study the numerous parameters influencing the seismic load bearing behavior, numerical models may be used. Therefore, this contribution presents a numerical approach for the simulation of infill masonry in reinforced concrete frames. Both parts, the surrounding frame as well as the infill are represented by micro modelling approaches to correctly take into account the different types of failure. The adopted numerical model describes the inelastic behavior of the system, as indicated by the obtained results of the overall structural response as well as the formation of damage in the infilled wall. Comparison of the numerical and experimental results highlights the valuable contribution of numerical simulations in the study and design of infilled frames. As damage of the infill masonry may occur in-plane due to the interaction as well as out-of-plane due to the low vertical load, both directions of loading are investigated.
Y1  - 2017
N1  - Paper No 3064
SP  - 1
EP  - 11
PB  - Chilean Association on Seismology and Earthquake Engineering (ACHISINA)
ER  - 
TY  - CHAP
A1  - Rajan, S.
A1  - Butenweg, Christoph
A1  - Dalguer, L. A.
A1  - An, J. H.
A1  - Renault, P.
A1  - Klinkel, S.
T1  - Fragility curves for a three-storey reinforced concrete test structure of the international benchmark SMART 2013
T2  - 16th World Conference on Earthquake, 16WCEE 2017 Santiago Chile, January 9th to 13th 2017
Y1  - 2017
N1  - Paper No 2119
PB  - Chilean Association on Seismology and Earthquake Engineering (ACHISINA)
ER  -