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G. Achs, H. Wenzel, C. Adam:
"Seismic hazard assessment of historical residential buildings utilizing in-situ measurements";
in: "Proc. ECCOMAS Thematic Conference on Computational Methods in Structural Dynamics and Earthquake Engineering", M. Papadrakakis et al. (ed.); Organizing Comittee COMPDYN 2007, 2007, Paper ID 1122, 10 pages.

In this paper a simple and economically competitive procedure for the seismic assessment of historic buildings is proposed. The approach is based on a combination of experimental investigation with successive numerical analysis. The dynamic parameters of the building such as natural frequencies and mode shapes are determined from in-situ measurements. A simplified mechanical model, where the mass is lumped to the story levels, represents the building. The distributed stiffness of the model is identified by a finite element modal update procedure utilizing the experimentally determined characteristics. A pushover analysis yields the capacity curve, and a capacity spectrum is utilized to determine the performance point. Consequently, the seismic vulnerability of the original object can be evaluated. Structural changes (mass, stiffness) of projected reconstructions are considered in a modification of the mechanical model, and seismic assessment is performed as for the original structure.

Combined Experimental - Numerical Analysis, Finite Element Model Update Procedure, System Identification