Objective 3: development of a decentralised decision model, encompassing all actors involved in the implementation strategy of a retrofit measure, from different backgrounds: geophysics (engineering seismology), (structural) engineering, architecture, economy (investment efficiency) and sociology (consideration of user issues).
Modularisation of a collaborative decision model taking into account non-measurable criteria.
In the original proposal
the use of the pair wise comparison method was foreseen. This method,
originating from Saaty, has lead to a multiattributive decision system as shown
by the „balancing method“ of Prof. Strassert at the
The pair wise comparison method was not used, but instead a detailed decision tree has been developed. The decision tree displays two levels: the level of the actors and the level of the actors’ criteria. This decision tree has been employed in order to evaluate the retrofit methods considered in the simulations performed for objective 2.
The main result at
this objective is the decision tree itself. A weighting of these objectives can
be seen in the publication “Regression based criteria determining for
preservation strategies of early reinforced concrete buildings” (publication
C9). The decision tree as such was part of the presentation at the 7th
International ROSE Seminar and will be published in the upcoming special issue
of the Journal of Earthquake Engineering. The decision tree is contained and
explained also in the authored book on “Applicability and economic efficiency
of seismic retrofit measures on existing buildings: the case of
The discussions with the host helped to clarify the objectives of the structural engineer.
Decision making is an important research area. Also, this objective provides an interface to decision makers in seismic risk management.