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1. Dynamic in-situ structural testing to identify the actual (linear) bridge behaviour, 2. Linear FE modelling (fitting to test results), 3. Nonlinear modelling of bridge piers, 4. Physical testing of realistically large bridge piers with rectangular hollow cross section using the pseudodynamic method, 5. Computation of realistic synthetic broad-band records, taking into consideration source, path and local effects (also asynchronous excitation), 6. Development of simplified analysis tools for assessing the vulnerability of complete bridges, 7. Development of retrofitting measures to improve bridge reliability, including an evaluation of intervention costs.

The basic idea of the project is to apply sophisticated as well as simple methods to bridge Warth/ Austria, which was built 20 years ago, in order to assess its earthquake capacity. Comparing the results the simplest method should be defined which gives the structural behaviour in an adequate way. The goal is the development of simple methods for the assessment, which are based on measurements of structural parameters. In this project expensive testing is carried out (dynamic in-situ measurements for one week, pseudodynamic tests in ELSA lab) which cannot be the standard procedure for each bridge to be assessed. The benefit of the in-situ test is that we can start with an updated FE model, which is close to the (linear) reality. The main benefit of the pseudodynamic tests will be the information on the ductile behaviour of large R/C bridge piers with hollow cross section. .

Additional information

Authors: FLESCH R.G, Arsenal Research, Vienna (AT);PALUMBO P, ENEL Hydro/ ISMES (IT);DELGADO R, Universidade do Porto (PT);PINTO A, JRC-Institute for Systems, Informatics and Safety, Ispra (IT);ROMANELLI F, ICTP Trieste (IT);LEGERON F, CIMNE Barcelona (ES)
Bibliographic Reference: An oral report given at: Workshop: Mitigation of Seismic Risk Support to Recently Affected European Countries. Organised by: JRC Held at: Hotel Villa Carlotta, Belgirate (IT) Given on: 27-28 November 2000
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