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Title: Combined experiment and computation for dynamic testing of structures
Author: Negro, P.
Awarding Body: University of Wales Swansea
Current Institution: Swansea University
Date of Award: 1997
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The purpose of this study is to demonstrate the effectiveness of an approach which combines experiment and calculation in addressing structural dynamics problems. Calculation is generally not sufficient to solve the problem, since our knowledge of the nonlinear cyclic behaviour of materials is not sufficiently accurate. On the other hand, the availability of an effective and robust experimental technique does not yield per se the solution to any structural problem, due to the necessarily limited number of specimens which can be tested. Experimental results must be used to calibrate the available computer models, so that the computer models can be applied to any structure and/or any kind of dynamic action. The effectiveness of the approach is demonstrated with reference to the experimental programmes for which the author was responsible at the European Laboratory of Structural Assessment (ELSA). This includes the testing activity on a four-storey reinforced concrete frame building, and that on the same building equipped with nonstructural masonry infills regularly and irregularly distributed along the frame elevation. The approach is also applied to the tests conducted on large-scale models of reinforced concrete bridges, in which the author participated. For each experimental programme, the information which has been derived is described in the necessary detail. The experimental framework is represented by the pseudodynamic test method. For this reason, the activities carried out at ELSA for the verification of the method, to which the author contributed, are also presented. In addition, a new formulation of the method, capable of taking into account the presence of distributed masses, is introduced. The most important outcome of this work is the calibration of simple numerical models for reinforced concrete structures. It is expected that these models will be extensively used in the parametric analyses in support of the final drafting of Eurocode 8.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available