Vulnerability Assessment of Large Building Stocks - Lessons From the Seramar Project


Abstract eng:
The description of building vulnerability and resultant derived damage prognoses for different impact levels are the key element for any seismic risk study. In cases where realistic, detailed and reliable risk scenarios should support socioeconomic decisions and mitigation strategies, the entire building stock has to be considered, and a broad database is required to allocate empirical vulnerability and/ or analytical fragility functions for the damage assessment. The engineerassigned (most probable) vulnerability, performance score or building type specific fragility function have to consider the uncertainty in building response characteristic and the particularities of the local construction practice. As an outcome of a Turkish-German joint research project on Seismic Risk Assessment and Mitigation in the AntakyaMaraş-Region (SERAMAR) different methods and strategies for the vulnerability assessment of a large building stock could be developed, applied and finally compared. Within the SERAMAR project it was decided to carry out a complete building stock survey and a systematic elaboration of a building typology including masonry and R.C. type structures. The whole building stock is classified on the basis of parameters relevant to the seismic performance, e.g. criteria of structural layout irregularity as well as structural peculiarities, which could yield to specific damage patterns. The locations of these subclasses are mapped using a GIS-tool together with the elaborated hazard parameters and risk data layers. The definition of building types requires the abstraction and reduction of the building characteristics (which is often hidden by the facade) to the basic structural system and the failure and damage-determining criteria under seismic impact. The defined building types and their allocated vulnerability classes have to anticipate comparable damage pattern under comparable shaking intensities. In this paper the derived building typologies for reinforced concrete structures as well as masonry buildings of the building stock of the study area Antakya will be presented. Similarities and differences of the existing building typologies are discussed. Results of the empirical, analytical and hybrid vulnerability assessment methods will be compared. Not at least, the outcome of instrumental testing and building monitoring is reviewed concerning the refinement and scaling of analytically derived fragility functions.

Contributors:
Conference Title:
Conference Title:
16th World Conference on Earthquake Engineering
Conference Venue:
Santiago (CL)
Conference Dates:
2017-01-09 / 2017-01-13
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 Record created 2017-01-18, last modified 2017-01-18


Original version of the author's contribution as presented on USB, paper 2046.:
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