Investigation of horizontal floor acceleration in historic masonry buildings

Abstract

Earthquakes with comparatively low magnitudes can lead to serious damage to non‐structural components of historical masonry buildings, such as architectural facade elements. In order to assess the vulnerability of non‐structural components, the horizontal floor acceleration is used. This depends on the dynamic characteristics of the building, the ground acceleration and dissipative effects. In the present article comprehensive probabilistic FE time history analyses with different hazard levels have been carried out for selected masonry structures. In order to take induced non‐linearities into account, a macroscopic material model for historic masonry was calibrated and applied. It was shown that the chosen methodology enables the determination of the distribution of floor acceleration over the building height for historic masonry structures. In addition, due to the detailed scope, a robust comparison with the simplified design methods is possible. Finally, the applicability of the simplified design approach according to EN 1998‐1 [1] is discussed for the investigated case.

Seismic vulnerability of historic brick masonry buildings in Vienna

“…The acceleration responses of the individual wall elements (fire wall, partition wall, etc.) turn out differently, as also shown in (Rudisch et al 2017). The diagrams in Fig.…”

“…Table 2) of the material model, a realistic analysis under dynamic loading is achieved. An adequate hysteretic material behavior was achieved and can be found in detail in the work of (Rudisch et al 2017).…”

“…The possible higher global building strength due to the at least partial interaction between these elements is therefore not considered. This approach has also been followed in previous research, as (Rudisch et al 2017;Moschen et al 2019, etc.). For the scope of the study, the identification and location of critical structural areas in the masonry, the selected models are considered appropriate and allow also direct comparison with past research (Rudisch et al 2017;Moschen et al 2019, etc.).…”

“…This approach has also been followed in previous research, as (Rudisch et al 2017;Moschen et al 2019, etc.). For the scope of the study, the identification and location of critical structural areas in the masonry, the selected models are considered appropriate and allow also direct comparison with past research (Rudisch et al 2017;Moschen et al 2019, etc.). Moreover a good correlation of the observed critical structural areas from the first part of the paper is achieved in the numerical simulations (cf.…”

“…The work of (Achs and Adam 2012b) presents a rapid-visual-screening (RVS) method for a rapid seismic assessment developed to historic brick masonry buildings, where both the physical vulnerability and the socio-economic vulnerability are considered and provides new findings of the vulnerability of historic brick masonry buildings. In addition, efficient numerical and analytical methods for describing the load-bearing behavior of individual historic masonry walls were presented in (Rudisch et al 2017;Moschen et al 2019).…”